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[mono-project.git] / mono / metadata / class.c
blob34ade95c179a49879ff670b092534bf2638aa261
1 /*
2 * class.c: Class management for the Mono runtime
3 *
4 * Author:
5 * Miguel de Icaza (miguel@ximian.com)
6 *
7 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
8 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
9 */
10 #include <config.h>
11 #ifdef HAVE_ALLOCA_H
12 #include <alloca.h>
13 #endif
14 #include <glib.h>
15 #include <stdio.h>
16 #include <string.h>
17 #include <stdlib.h>
18 #if !HOST_WIN32
19 #include <mono/io-layer/atomic.h>
20 #endif
21 #include <mono/metadata/image.h>
22 #include <mono/metadata/assembly.h>
23 #include <mono/metadata/metadata.h>
24 #include <mono/metadata/metadata-internals.h>
25 #include <mono/metadata/profiler-private.h>
26 #include <mono/metadata/tabledefs.h>
27 #include <mono/metadata/tokentype.h>
28 #include <mono/metadata/class-internals.h>
29 #include <mono/metadata/object.h>
30 #include <mono/metadata/appdomain.h>
31 #include <mono/metadata/mono-endian.h>
32 #include <mono/metadata/debug-helpers.h>
33 #include <mono/metadata/reflection.h>
34 #include <mono/metadata/exception.h>
35 #include <mono/metadata/security-manager.h>
36 #include <mono/metadata/security-core-clr.h>
37 #include <mono/metadata/attrdefs.h>
38 #include <mono/metadata/gc-internal.h>
39 #include <mono/metadata/verify-internals.h>
40 #include <mono/metadata/mono-debug.h>
41 #include <mono/utils/mono-counters.h>
42 #include <mono/utils/mono-string.h>
43 #include <mono/utils/mono-error-internals.h>
44 #include <mono/utils/mono-logger-internal.h>
45 MonoStats mono_stats;
46
47 gboolean mono_print_vtable = FALSE;
48
49 /* Statistics */
50 guint32 inflated_classes, inflated_classes_size, inflated_methods_size;
51 guint32 classes_size, class_ext_size;
52
53 /* Function supplied by the runtime to find classes by name using information from the AOT file */
54 static MonoGetClassFromName get_class_from_name = NULL;
55
56 static MonoClass * mono_class_create_from_typedef (MonoImage *image, guint32 type_token);
57 static gboolean mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res);
58 static gboolean can_access_type (MonoClass *access_klass, MonoClass *member_klass);
59 static MonoMethod* find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags);
60 static int generic_array_methods (MonoClass *class);
61 static void setup_generic_array_ifaces (MonoClass *class, MonoClass *iface, MonoMethod **methods, int pos);
62
63 static MonoMethod* mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter);
64 static char* mono_assembly_name_from_token (MonoImage *image, guint32 type_token);
65 static void mono_field_resolve_type (MonoClassField *field, MonoError *error);
66 static guint32 mono_field_resolve_flags (MonoClassField *field);
67 static void mono_class_setup_vtable_full (MonoClass *class, GList *in_setup);
68
69
70 void (*mono_debugger_class_init_func) (MonoClass *klass) = NULL;
71 void (*mono_debugger_class_loaded_methods_func) (MonoClass *klass) = NULL;
72
73 /*
74 * mono_class_from_typeref:
75 * @image: a MonoImage
76 * @type_token: a TypeRef token
77 *
78 * Creates the MonoClass* structure representing the type defined by
79 * the typeref token valid inside @image.
80 * Returns: the MonoClass* representing the typeref token, NULL ifcould
81 * not be loaded.
82 */
83 MonoClass *
84 mono_class_from_typeref (MonoImage *image, guint32 type_token)
85 {
86 MonoError error;
87 guint32 cols [MONO_TYPEREF_SIZE];
88 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
89 guint32 idx;
90 const char *name, *nspace;
91 MonoClass *res;
92 MonoImage *module;
93
94 if (!mono_verifier_verify_typeref_row (image, (type_token & 0xffffff) - 1, &error)) {
95 mono_trace_warning (MONO_TRACE_TYPE, "Failed to resolve typeref from %s due to '%s'", image->name, mono_error_get_message (&error));
96 return NULL;
97 }
98
99 mono_metadata_decode_row (t, (type_token&0xffffff)-1, cols, MONO_TYPEREF_SIZE);
100
101 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
102 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
103
104 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLTION_SCOPE_BITS;
105 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLTION_SCOPE_MASK) {
106 case MONO_RESOLTION_SCOPE_MODULE:
107 if (!idx)
108 g_error ("null ResolutionScope not yet handled");
109 /* a typedef in disguise */
110 return mono_class_from_name (image, nspace, name);
111 case MONO_RESOLTION_SCOPE_MODULEREF:
112 module = mono_image_load_module (image, idx);
113 if (module)
114 return mono_class_from_name (module, nspace, name);
115 else {
116 char *msg = g_strdup_printf ("%s%s%s", nspace, nspace [0] ? "." : "", name);
117 char *human_name;
118
119 human_name = mono_stringify_assembly_name (&image->assembly->aname);
120 mono_loader_set_error_type_load (msg, human_name);
121 g_free (msg);
122 g_free (human_name);
123
124 return NULL;
125 }
126 case MONO_RESOLTION_SCOPE_TYPEREF: {
127 MonoClass *enclosing;
128 GList *tmp;
129
130 if (idx == mono_metadata_token_index (type_token)) {
131 mono_loader_set_error_bad_image (g_strdup_printf ("Image %s with self-referencing typeref token %08x.", image->name, type_token));
132 return NULL;
133 }
134
135 enclosing = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | idx);
136 if (!enclosing)
137 return NULL;
138
139 if (enclosing->nested_classes_inited && enclosing->ext) {
140 /* Micro-optimization: don't scan the metadata tables if enclosing is already inited */
141 for (tmp = enclosing->ext->nested_classes; tmp; tmp = tmp->next) {
142 res = tmp->data;
143 if (strcmp (res->name, name) == 0)
144 return res;
145 }
146 } else {
147 /* Don't call mono_class_init as we might've been called by it recursively */
148 int i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, 1);
149 while (i) {
150 guint32 class_nested = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, MONO_NESTED_CLASS_NESTED);
151 guint32 string_offset = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_TYPEDEF], class_nested - 1, MONO_TYPEDEF_NAME);
152 const char *nname = mono_metadata_string_heap (enclosing->image, string_offset);
153
154 if (strcmp (nname, name) == 0)
155 return mono_class_create_from_typedef (enclosing->image, MONO_TOKEN_TYPE_DEF | class_nested);
156
157 i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, i + 1);
158 }
159 }
160 g_warning ("TypeRef ResolutionScope not yet handled (%d) for %s.%s in image %s", idx, nspace, name, image->name);
161 return NULL;
162 }
163 case MONO_RESOLTION_SCOPE_ASSEMBLYREF:
164 break;
165 }
166
167 if (idx > image->tables [MONO_TABLE_ASSEMBLYREF].rows) {
168 mono_loader_set_error_bad_image (g_strdup_printf ("Image %s with invalid assemblyref token %08x.", image->name, idx));
169 return NULL;
170 }
171
172 if (!image->references || !image->references [idx - 1])
173 mono_assembly_load_reference (image, idx - 1);
174 g_assert (image->references [idx - 1]);
175
176 /* If the assembly did not load, register this as a type load exception */
177 if (image->references [idx - 1] == REFERENCE_MISSING){
178 MonoAssemblyName aname;
179 char *human_name;
180
181 mono_assembly_get_assemblyref (image, idx - 1, &aname);
182 human_name = mono_stringify_assembly_name (&aname);
183 mono_loader_set_error_assembly_load (human_name, image->assembly ? image->assembly->ref_only : FALSE);
184 g_free (human_name);
185
186 return NULL;
187 }
188
189 return mono_class_from_name (image->references [idx - 1]->image, nspace, name);
190 }
191
192
193 static void *
194 mono_image_memdup (MonoImage *image, void *data, guint size)
195 {
196 void *res = mono_image_alloc (image, size);
197 memcpy (res, data, size);
198 return res;
199 }
200
201 /* Copy everything mono_metadata_free_array free. */
202 MonoArrayType *
203 mono_dup_array_type (MonoImage *image, MonoArrayType *a)
204 {
205 if (image) {
206 a = mono_image_memdup (image, a, sizeof (MonoArrayType));
207 if (a->sizes)
208 a->sizes = mono_image_memdup (image, a->sizes, a->numsizes * sizeof (int));
209 if (a->lobounds)
210 a->lobounds = mono_image_memdup (image, a->lobounds, a->numlobounds * sizeof (int));
211 } else {
212 a = g_memdup (a, sizeof (MonoArrayType));
213 if (a->sizes)
214 a->sizes = g_memdup (a->sizes, a->numsizes * sizeof (int));
215 if (a->lobounds)
216 a->lobounds = g_memdup (a->lobounds, a->numlobounds * sizeof (int));
217 }
218 return a;
219 }
220
221 /* Copy everything mono_metadata_free_method_signature free. */
222 MonoMethodSignature*
223 mono_metadata_signature_deep_dup (MonoImage *image, MonoMethodSignature *sig)
224 {
225 int i;
226
227 sig = mono_metadata_signature_dup_full (image, sig);
228
229 sig->ret = mono_metadata_type_dup (image, sig->ret);
230 for (i = 0; i < sig->param_count; ++i)
231 sig->params [i] = mono_metadata_type_dup (image, sig->params [i]);
232
233 return sig;
234 }
235
236 static void
237 _mono_type_get_assembly_name (MonoClass *klass, GString *str)
238 {
239 MonoAssembly *ta = klass->image->assembly;
240 char *name;
241
242 name = mono_stringify_assembly_name (&ta->aname);
243 g_string_append_printf (str, ", %s", name);
244 g_free (name);
245 }
246
247 static inline void
248 mono_type_name_check_byref (MonoType *type, GString *str)
249 {
250 if (type->byref)
251 g_string_append_c (str, '&');
252 }
253
254 static void
255 mono_type_get_name_recurse (MonoType *type, GString *str, gboolean is_recursed,
256 MonoTypeNameFormat format)
257 {
258 MonoClass *klass;
259
260 switch (type->type) {
261 case MONO_TYPE_ARRAY: {
262 int i, rank = type->data.array->rank;
263 MonoTypeNameFormat nested_format;
264
265 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
266 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
267
268 mono_type_get_name_recurse (
269 &type->data.array->eklass->byval_arg, str, FALSE, nested_format);
270 g_string_append_c (str, '[');
271 if (rank == 1)
272 g_string_append_c (str, '*');
273 for (i = 1; i < rank; i++)
274 g_string_append_c (str, ',');
275 g_string_append_c (str, ']');
276
277 mono_type_name_check_byref (type, str);
278
279 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
280 _mono_type_get_assembly_name (type->data.array->eklass, str);
281 break;
282 }
283 case MONO_TYPE_SZARRAY: {
284 MonoTypeNameFormat nested_format;
285
286 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
287 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
288
289 mono_type_get_name_recurse (
290 &type->data.klass->byval_arg, str, FALSE, nested_format);
291 g_string_append (str, "[]");
292
293 mono_type_name_check_byref (type, str);
294
295 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
296 _mono_type_get_assembly_name (type->data.klass, str);
297 break;
298 }
299 case MONO_TYPE_PTR: {
300 MonoTypeNameFormat nested_format;
301
302 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
303 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
304
305 mono_type_get_name_recurse (
306 type->data.type, str, FALSE, nested_format);
307 g_string_append_c (str, '*');
308
309 mono_type_name_check_byref (type, str);
310
311 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
312 _mono_type_get_assembly_name (mono_class_from_mono_type (type->data.type), str);
313 break;
314 }
315 case MONO_TYPE_VAR:
316 case MONO_TYPE_MVAR:
317 if (!mono_generic_param_info (type->data.generic_param))
318 g_string_append_printf (str, "%s%d", type->type == MONO_TYPE_VAR ? "!" : "!!", type->data.generic_param->num);
319 else
320 g_string_append (str, mono_generic_param_info (type->data.generic_param)->name);
321
322 mono_type_name_check_byref (type, str);
323
324 break;
325 default:
326 klass = mono_class_from_mono_type (type);
327 if (klass->nested_in) {
328 mono_type_get_name_recurse (
329 &klass->nested_in->byval_arg, str, TRUE, format);
330 if (format == MONO_TYPE_NAME_FORMAT_IL)
331 g_string_append_c (str, '.');
332 else
333 g_string_append_c (str, '+');
334 } else if (*klass->name_space) {
335 g_string_append (str, klass->name_space);
336 g_string_append_c (str, '.');
337 }
338 if (format == MONO_TYPE_NAME_FORMAT_IL) {
339 char *s = strchr (klass->name, '`');
340 int len = s ? s - klass->name : strlen (klass->name);
341
342 g_string_append_len (str, klass->name, len);
343 } else
344 g_string_append (str, klass->name);
345 if (is_recursed)
346 break;
347 if (klass->generic_class) {
348 MonoGenericClass *gclass = klass->generic_class;
349 MonoGenericInst *inst = gclass->context.class_inst;
350 MonoTypeNameFormat nested_format;
351 int i;
352
353 nested_format = format == MONO_TYPE_NAME_FORMAT_FULL_NAME ?
354 MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED : format;
355
356 if (format == MONO_TYPE_NAME_FORMAT_IL)
357 g_string_append_c (str, '<');
358 else
359 g_string_append_c (str, '[');
360 for (i = 0; i < inst->type_argc; i++) {
361 MonoType *t = inst->type_argv [i];
362
363 if (i)
364 g_string_append_c (str, ',');
365 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
366 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
367 g_string_append_c (str, '[');
368 mono_type_get_name_recurse (inst->type_argv [i], str, FALSE, nested_format);
369 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
370 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
371 g_string_append_c (str, ']');
372 }
373 if (format == MONO_TYPE_NAME_FORMAT_IL)
374 g_string_append_c (str, '>');
375 else
376 g_string_append_c (str, ']');
377 } else if (klass->generic_container &&
378 (format != MONO_TYPE_NAME_FORMAT_FULL_NAME) &&
379 (format != MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)) {
380 int i;
381
382 if (format == MONO_TYPE_NAME_FORMAT_IL)
383 g_string_append_c (str, '<');
384 else
385 g_string_append_c (str, '[');
386 for (i = 0; i < klass->generic_container->type_argc; i++) {
387 if (i)
388 g_string_append_c (str, ',');
389 g_string_append (str, mono_generic_container_get_param_info (klass->generic_container, i)->name);
390 }
391 if (format == MONO_TYPE_NAME_FORMAT_IL)
392 g_string_append_c (str, '>');
393 else
394 g_string_append_c (str, ']');
395 }
396
397 mono_type_name_check_byref (type, str);
398
399 if ((format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
400 (type->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
401 _mono_type_get_assembly_name (klass, str);
402 break;
403 }
404 }
405
406 /**
407 * mono_type_get_name_full:
408 * @type: a type
409 * @format: the format for the return string.
410 *
411 *
412 * Returns: the string representation in a number of formats:
413 *
414 * if format is MONO_TYPE_NAME_FORMAT_REFLECTION, the return string is
415 * returned in the formatrequired by System.Reflection, this is the
416 * inverse of mono_reflection_parse_type ().
417 *
418 * if format is MONO_TYPE_NAME_FORMAT_IL, it returns a syntax that can
419 * be used by the IL assembler.
420 *
421 * if format is MONO_TYPE_NAME_FORMAT_FULL_NAME
422 *
423 * if format is MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED
424 */
425 char*
426 mono_type_get_name_full (MonoType *type, MonoTypeNameFormat format)
427 {
428 GString* result;
429
430 result = g_string_new ("");
431
432 mono_type_get_name_recurse (type, result, FALSE, format);
433
434 return g_string_free (result, FALSE);
435 }
436
437 /**
438 * mono_type_get_full_name:
439 * @class: a class
440 *
441 * Returns: the string representation for type as required by System.Reflection.
442 * The inverse of mono_reflection_parse_type ().
443 */
444 char *
445 mono_type_get_full_name (MonoClass *class)
446 {
447 return mono_type_get_name_full (mono_class_get_type (class), MONO_TYPE_NAME_FORMAT_REFLECTION);
448 }
449
450 /**
451 * mono_type_get_name:
452 * @type: a type
453 *
454 * Returns: the string representation for type as it would be represented in IL code.
455 */
456 char*
457 mono_type_get_name (MonoType *type)
458 {
459 return mono_type_get_name_full (type, MONO_TYPE_NAME_FORMAT_IL);
460 }
461
462 /*
463 * mono_type_get_underlying_type:
464 * @type: a type
465 *
466 * Returns: the MonoType for the underlying integer type if @type
467 * is an enum and byref is false, otherwise the type itself.
468 */
469 MonoType*
470 mono_type_get_underlying_type (MonoType *type)
471 {
472 if (type->type == MONO_TYPE_VALUETYPE && type->data.klass->enumtype && !type->byref)
473 return mono_class_enum_basetype (type->data.klass);
474 if (type->type == MONO_TYPE_GENERICINST && type->data.generic_class->container_class->enumtype && !type->byref)
475 return mono_class_enum_basetype (type->data.generic_class->container_class);
476 return type;
477 }
478
479 /*
480 * mono_class_is_open_constructed_type:
481 * @type: a type
482 *
483 * Returns TRUE if type represents a generics open constructed type.
484 * IOW, not all type parameters required for the instantiation have
485 * been provided or it's a generic type definition.
486 *
487 * An open constructed type means it's a non realizable type. Not to
488 * be mixed up with an abstract type - we can't cast or dispatch to
489 * an open type, for example.
490 */
491 gboolean
492 mono_class_is_open_constructed_type (MonoType *t)
493 {
494 switch (t->type) {
495 case MONO_TYPE_VAR:
496 case MONO_TYPE_MVAR:
497 return TRUE;
498 case MONO_TYPE_SZARRAY:
499 return mono_class_is_open_constructed_type (&t->data.klass->byval_arg);
500 case MONO_TYPE_ARRAY:
501 return mono_class_is_open_constructed_type (&t->data.array->eklass->byval_arg);
502 case MONO_TYPE_PTR:
503 return mono_class_is_open_constructed_type (t->data.type);
504 case MONO_TYPE_GENERICINST:
505 return t->data.generic_class->context.class_inst->is_open;
506 case MONO_TYPE_CLASS:
507 case MONO_TYPE_VALUETYPE:
508 return t->data.klass->generic_container != NULL;
509 default:
510 return FALSE;
511 }
512 }
513
514 static MonoType*
515 inflate_generic_type (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
516 {
517 mono_error_init (error);
518
519 switch (type->type) {
520 case MONO_TYPE_MVAR: {
521 MonoType *nt;
522 int num = mono_type_get_generic_param_num (type);
523 MonoGenericInst *inst = context->method_inst;
524 if (!inst || !inst->type_argv)
525 return NULL;
526 if (num >= inst->type_argc) {
527 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
528 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded in this context with %d instantiations",
529 num, info ? info->name : "", inst->type_argc);
530 return NULL;
531 }
532
533 /*
534 * Note that the VAR/MVAR cases are different from the rest. The other cases duplicate @type,
535 * while the VAR/MVAR duplicates a type from the context. So, we need to ensure that the
536 * ->byref and ->attrs from @type are propagated to the returned type.
537 */
538 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
539 nt->byref = type->byref;
540 nt->attrs = type->attrs;
541 return nt;
542 }
543 case MONO_TYPE_VAR: {
544 MonoType *nt;
545 int num = mono_type_get_generic_param_num (type);
546 MonoGenericInst *inst = context->class_inst;
547 if (!inst)
548 return NULL;
549 if (num >= inst->type_argc) {
550 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
551 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded in this context with %d instantiations",
552 num, info ? info->name : "", inst->type_argc);
553 return NULL;
554 }
555 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
556 nt->byref = type->byref;
557 nt->attrs = type->attrs;
558 return nt;
559 }
560 case MONO_TYPE_SZARRAY: {
561 MonoClass *eclass = type->data.klass;
562 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
563 if (!inflated || !mono_error_ok (error))
564 return NULL;
565 nt = mono_metadata_type_dup (image, type);
566 nt->data.klass = mono_class_from_mono_type (inflated);
567 mono_metadata_free_type (inflated);
568 return nt;
569 }
570 case MONO_TYPE_ARRAY: {
571 MonoClass *eclass = type->data.array->eklass;
572 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
573 if (!inflated || !mono_error_ok (error))
574 return NULL;
575 nt = mono_metadata_type_dup (image, type);
576 nt->data.array->eklass = mono_class_from_mono_type (inflated);
577 mono_metadata_free_type (inflated);
578 return nt;
579 }
580 case MONO_TYPE_GENERICINST: {
581 MonoGenericClass *gclass = type->data.generic_class;
582 MonoGenericInst *inst;
583 MonoType *nt;
584 if (!gclass->context.class_inst->is_open)
585 return NULL;
586
587 inst = mono_metadata_inflate_generic_inst (gclass->context.class_inst, context, error);
588 if (!mono_error_ok (error))
589 return NULL;
590 if (inst != gclass->context.class_inst)
591 gclass = mono_metadata_lookup_generic_class (gclass->container_class, inst, gclass->is_dynamic);
592
593 if (gclass == type->data.generic_class)
594 return NULL;
595
596 nt = mono_metadata_type_dup (image, type);
597 nt->data.generic_class = gclass;
598 return nt;
599 }
600 case MONO_TYPE_CLASS:
601 case MONO_TYPE_VALUETYPE: {
602 MonoClass *klass = type->data.klass;
603 MonoGenericContainer *container = klass->generic_container;
604 MonoGenericInst *inst;
605 MonoGenericClass *gclass = NULL;
606 MonoType *nt;
607
608 if (!container)
609 return NULL;
610
611 /* We can't use context->class_inst directly, since it can have more elements */
612 inst = mono_metadata_inflate_generic_inst (container->context.class_inst, context, error);
613 if (!mono_error_ok (error))
614 return NULL;
615 if (inst == container->context.class_inst)
616 return NULL;
617
618 gclass = mono_metadata_lookup_generic_class (klass, inst, klass->image->dynamic);
619
620 nt = mono_metadata_type_dup (image, type);
621 nt->type = MONO_TYPE_GENERICINST;
622 nt->data.generic_class = gclass;
623 return nt;
624 }
625 default:
626 return NULL;
627 }
628 return NULL;
629 }
630
631 MonoGenericContext *
632 mono_generic_class_get_context (MonoGenericClass *gclass)
633 {
634 return &gclass->context;
635 }
636
637 MonoGenericContext *
638 mono_class_get_context (MonoClass *class)
639 {
640 return class->generic_class ? mono_generic_class_get_context (class->generic_class) : NULL;
641 }
642
643 /*
644 * mono_class_get_generic_container:
645 *
646 * Return the generic container of KLASS which should be a generic type definition.
647 */
648 MonoGenericContainer*
649 mono_class_get_generic_container (MonoClass *klass)
650 {
651 g_assert (klass->is_generic);
652
653 return klass->generic_container;
654 }
655
656 /*
657 * mono_class_get_generic_class:
658 *
659 * Return the MonoGenericClass of KLASS, which should be a generic instance.
660 */
661 MonoGenericClass*
662 mono_class_get_generic_class (MonoClass *klass)
663 {
664 g_assert (klass->is_inflated);
665
666 return klass->generic_class;
667 }
668
669 /*
670 * mono_class_inflate_generic_type_with_mempool:
671 * @mempool: a mempool
672 * @type: a type
673 * @context: a generics context
674 * @error: error context
675 *
676 * The same as mono_class_inflate_generic_type, but allocates the MonoType
677 * from mempool if it is non-NULL. If it is NULL, the MonoType is
678 * allocated on the heap and is owned by the caller.
679 * The returned type can potentially be the same as TYPE, so it should not be
680 * modified by the caller, and it should be freed using mono_metadata_free_type ().
681 */
682 MonoType*
683 mono_class_inflate_generic_type_with_mempool (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
684 {
685 MonoType *inflated = NULL;
686 mono_error_init (error);
687
688 if (context)
689 inflated = inflate_generic_type (image, type, context, error);
690 if (!mono_error_ok (error))
691 return NULL;
692
693 if (!inflated) {
694 MonoType *shared = mono_metadata_get_shared_type (type);
695
696 if (shared) {
697 return shared;
698 } else {
699 return mono_metadata_type_dup (image, type);
700 }
701 }
702
703 mono_stats.inflated_type_count++;
704 return inflated;
705 }
706
707 /*
708 * mono_class_inflate_generic_type:
709 * @type: a type
710 * @context: a generics context
711 *
712 * If @type is a generic type and @context is not NULL, instantiate it using the
713 * generics context @context.
714 *
715 * Returns: the instantiated type or a copy of @type. The returned MonoType is allocated
716 * on the heap and is owned by the caller. Returns NULL on error.
717 *
718 * @deprecated Please use mono_class_inflate_generic_type_checked instead
719 */
720 MonoType*
721 mono_class_inflate_generic_type (MonoType *type, MonoGenericContext *context)
722 {
723 MonoError error;
724 MonoType *result;
725 result = mono_class_inflate_generic_type_checked (type, context, &error);
726
727 if (!mono_error_ok (&error)) {
728 mono_error_cleanup (&error);
729 return NULL;
730 }
731 return result;
732 }
733
734 /*
735 * mono_class_inflate_generic_type:
736 * @type: a type
737 * @context: a generics context
738 * @error: error context to use
739 *
740 * If @type is a generic type and @context is not NULL, instantiate it using the
741 * generics context @context.
742 *
743 * Returns: the instantiated type or a copy of @type. The returned MonoType is allocated
744 * on the heap and is owned by the caller.
745 */
746 MonoType*
747 mono_class_inflate_generic_type_checked (MonoType *type, MonoGenericContext *context, MonoError *error)
748 {
749 return mono_class_inflate_generic_type_with_mempool (NULL, type, context, error);
750 }
751
752 /*
753 * mono_class_inflate_generic_type_no_copy:
754 *
755 * Same as inflate_generic_type_with_mempool, but return TYPE if no inflation
756 * was done.
757 */
758 static MonoType*
759 mono_class_inflate_generic_type_no_copy (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
760 {
761 MonoType *inflated = NULL;
762
763 mono_error_init (error);
764 if (context) {
765 inflated = inflate_generic_type (image, type, context, error);
766 if (!mono_error_ok (error))
767 return NULL;
768 }
769
770 if (!inflated)
771 return type;
772
773 mono_stats.inflated_type_count++;
774 return inflated;
775 }
776
777 static MonoClass*
778 mono_class_inflate_generic_class_checked (MonoClass *gklass, MonoGenericContext *context, MonoError *error)
779 {
780 MonoClass *res;
781 MonoType *inflated;
782
783 inflated = mono_class_inflate_generic_type_checked (&gklass->byval_arg, context, error);
784 if (!mono_error_ok (error))
785 return NULL;
786
787 res = mono_class_from_mono_type (inflated);
788 mono_metadata_free_type (inflated);
789
790 return res;
791 }
792 /*
793 * mono_class_inflate_generic_class:
794 *
795 * Inflate the class GKLASS with CONTEXT.
796 */
797 MonoClass*
798 mono_class_inflate_generic_class (MonoClass *gklass, MonoGenericContext *context)
799 {
800 MonoError error;
801 MonoClass *res;
802
803 res = mono_class_inflate_generic_class_checked (gklass, context, &error);
804 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
805
806 return res;
807 }
808
809
810
811 static MonoGenericContext
812 inflate_generic_context (MonoGenericContext *context, MonoGenericContext *inflate_with, MonoError *error)
813 {
814 MonoGenericInst *class_inst = NULL;
815 MonoGenericInst *method_inst = NULL;
816 MonoGenericContext res = { NULL, NULL };
817
818 mono_error_init (error);
819
820 if (context->class_inst) {
821 class_inst = mono_metadata_inflate_generic_inst (context->class_inst, inflate_with, error);
822 if (!mono_error_ok (error))
823 goto fail;
824 }
825
826 if (context->method_inst) {
827 method_inst = mono_metadata_inflate_generic_inst (context->method_inst, inflate_with, error);
828 if (!mono_error_ok (error))
829 goto fail;
830 }
831
832 res.class_inst = class_inst;
833 res.method_inst = method_inst;
834 fail:
835 return res;
836 }
837
838 /*
839 * mono_class_inflate_generic_method:
840 * @method: a generic method
841 * @context: a generics context
842 *
843 * Instantiate the generic method @method using the generics context @context.
844 *
845 * Returns: the new instantiated method
846 */
847 MonoMethod *
848 mono_class_inflate_generic_method (MonoMethod *method, MonoGenericContext *context)
849 {
850 return mono_class_inflate_generic_method_full (method, NULL, context);
851 }
852
853 /**
854 * mono_class_inflate_generic_method_full:
855 *
856 * Instantiate method @method with the generic context @context.
857 * BEWARE: All non-trivial fields are invalid, including klass, signature, and header.
858 * Use mono_method_signature () and mono_method_get_header () to get the correct values.
859 */
860 MonoMethod*
861 mono_class_inflate_generic_method_full (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context)
862 {
863 MonoError error;
864 MonoMethod *res = mono_class_inflate_generic_method_full_checked (method, klass_hint, context, &error);
865 if (!mono_error_ok (&error))
866 /*FIXME do proper error handling - on this case, kill this function. */
867 g_error ("Could not inflate generic method due to %s", mono_error_get_message (&error));
868
869 return res;
870 }
871
872 /**
873 * mono_class_inflate_generic_method_full_checked:
874 * Same as mono_class_inflate_generic_method_full but return failure using @error.
875 */
876 MonoMethod*
877 mono_class_inflate_generic_method_full_checked (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context, MonoError *error)
878 {
879 MonoMethod *result;
880 MonoMethodInflated *iresult, *cached;
881 MonoMethodSignature *sig;
882 MonoGenericContext tmp_context;
883 gboolean is_mb_open = FALSE;
884
885 mono_error_init (error);
886
887 /* The `method' has already been instantiated before => we need to peel out the instantiation and create a new context */
888 while (method->is_inflated) {
889 MonoGenericContext *method_context = mono_method_get_context (method);
890 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
891
892 tmp_context = inflate_generic_context (method_context, context, error);
893 if (!mono_error_ok (error))
894 return NULL;
895 context = &tmp_context;
896
897 if (mono_metadata_generic_context_equal (method_context, context))
898 return method;
899
900 method = imethod->declaring;
901 }
902
903 /*
904 * A method only needs to be inflated if the context has argument for which it is
905 * parametric. Eg:
906 *
907 * class Foo<T> { void Bar(); } - doesn't need to be inflated if only mvars' are supplied
908 * class Foo { void Bar<T> (); } - doesn't need to be if only vars' are supplied
909 *
910 */
911 if (!((method->is_generic && context->method_inst) ||
912 (method->klass->generic_container && context->class_inst)))
913 return method;
914
915 /*
916 * The reason for this hack is to fix the behavior of inflating generic methods that come from a MethodBuilder.
917 * What happens is that instantiating a generic MethodBuilder with its own arguments should create a diferent object.
918 * This is opposite to the way non-SRE MethodInfos behave.
919 *
920 * This happens, for example, when we want to emit a recursive generic method. Given the following C# code:
921 *
922 * void Example<T> () {
923 * Example<T> ();
924 * }
925 *
926 * In Example, the method token must be encoded as: "void Example<!!0>()"
927 *
928 * The reference to the first generic argument, "!!0", must be explicit otherwise it won't be inflated
929 * properly. To get that we need to inflate the MethodBuilder with its own arguments.
930 *
931 * On the other hand, inflating a non-SRE generic method with its own arguments should
932 * return itself. For example:
933 *
934 * MethodInfo m = ... //m is a generic method definition
935 * MethodInfo res = m.MakeGenericMethod (m.GetGenericArguments ());
936 * res == m
937 *
938 * To allow such scenarios we must allow inflation of MethodBuilder to happen in a diferent way than
939 * what happens with regular methods.
940 *
941 * There is one last touch to this madness, once a TypeBuilder is finished, IOW CreateType() is called,
942 * everything should behave like a regular type or method.
943 *
944 */
945 is_mb_open = method->is_generic &&
946 method->klass->image->dynamic && !method->klass->wastypebuilder && /* that is a MethodBuilder from an unfinished TypeBuilder */
947 context->method_inst == mono_method_get_generic_container (method)->context.method_inst; /* and it's been instantiated with its own arguments. */
948
949 iresult = g_new0 (MonoMethodInflated, 1);
950 iresult->context = *context;
951 iresult->declaring = method;
952 iresult->method.method.is_mb_open = is_mb_open;
953
954 if (!context->method_inst && method->is_generic)
955 iresult->context.method_inst = mono_method_get_generic_container (method)->context.method_inst;
956
957 if (!context->class_inst) {
958 g_assert (!iresult->declaring->klass->generic_class);
959 if (iresult->declaring->klass->generic_container)
960 iresult->context.class_inst = iresult->declaring->klass->generic_container->context.class_inst;
961 else if (iresult->declaring->klass->generic_class)
962 iresult->context.class_inst = iresult->declaring->klass->generic_class->context.class_inst;
963 }
964
965 mono_loader_lock ();
966 cached = mono_method_inflated_lookup (iresult, FALSE);
967 if (cached) {
968 mono_loader_unlock ();
969 g_free (iresult);
970 return (MonoMethod*)cached;
971 }
972
973 mono_stats.inflated_method_count++;
974
975 inflated_methods_size += sizeof (MonoMethodInflated);
976
977 sig = mono_method_signature (method);
978 if (!sig) {
979 char *name = mono_type_get_full_name (method->klass);
980 mono_error_set_bad_image (error, method->klass->image, "Could not resolve signature of method %s:%s", name, method->name);
981 g_free (name);
982 goto fail;
983 }
984
985 if (sig->pinvoke) {
986 memcpy (&iresult->method.pinvoke, method, sizeof (MonoMethodPInvoke));
987 } else {
988 memcpy (&iresult->method.method, method, sizeof (MonoMethod));
989 }
990
991 result = (MonoMethod *) iresult;
992 result->is_inflated = TRUE;
993 result->is_generic = FALSE;
994 result->sre_method = FALSE;
995 result->signature = NULL;
996 result->is_mb_open = is_mb_open;
997
998 if (!context->method_inst) {
999 /* Set the generic_container of the result to the generic_container of method */
1000 MonoGenericContainer *generic_container = mono_method_get_generic_container (method);
1001
1002 if (generic_container) {
1003 result->is_generic = 1;
1004 mono_method_set_generic_container (result, generic_container);
1005 }
1006 }
1007
1008 if (!klass_hint || !klass_hint->generic_class ||
1009 klass_hint->generic_class->container_class != method->klass ||
1010 klass_hint->generic_class->context.class_inst != context->class_inst)
1011 klass_hint = NULL;
1012
1013 if (method->klass->generic_container)
1014 result->klass = klass_hint;
1015
1016 if (!result->klass) {
1017 MonoType *inflated = inflate_generic_type (NULL, &method->klass->byval_arg, context, error);
1018 if (!mono_error_ok (error))
1019 goto fail;
1020
1021 result->klass = inflated ? mono_class_from_mono_type (inflated) : method->klass;
1022 if (inflated)
1023 mono_metadata_free_type (inflated);
1024 }
1025
1026 /*
1027 * FIXME: This should hold, but it doesn't:
1028 *
1029 * if (result->is_inflated && mono_method_get_context (result)->method_inst &&
1030 * mono_method_get_context (result)->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)result)->declaring)->context.method_inst) {
1031 * g_assert (result->is_generic);
1032 * }
1033 *
1034 * Fixing this here causes other things to break, hence a very
1035 * ugly hack in mini-trampolines.c - see
1036 * is_generic_method_definition().
1037 */
1038
1039 mono_method_inflated_lookup (iresult, TRUE);
1040 mono_loader_unlock ();
1041 return result;
1042
1043 fail:
1044 mono_loader_unlock ();
1045 g_free (iresult);
1046 return NULL;
1047 }
1048
1049 /**
1050 * mono_get_inflated_method:
1051 *
1052 * Obsolete. We keep it around since it's mentioned in the public API.
1053 */
1054 MonoMethod*
1055 mono_get_inflated_method (MonoMethod *method)
1056 {
1057 return method;
1058 }
1059
1060 /*
1061 * mono_method_get_context_general:
1062 * @method: a method
1063 * @uninflated: handle uninflated methods?
1064 *
1065 * Returns the generic context of a method or NULL if it doesn't have
1066 * one. For an inflated method that's the context stored in the
1067 * method. Otherwise it's in the method's generic container or in the
1068 * generic container of the method's class.
1069 */
1070 MonoGenericContext*
1071 mono_method_get_context_general (MonoMethod *method, gboolean uninflated)
1072 {
1073 if (method->is_inflated) {
1074 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1075 return &imethod->context;
1076 }
1077 if (!uninflated)
1078 return NULL;
1079 if (method->is_generic)
1080 return &(mono_method_get_generic_container (method)->context);
1081 if (method->klass->generic_container)
1082 return &method->klass->generic_container->context;
1083 return NULL;
1084 }
1085
1086 /*
1087 * mono_method_get_context:
1088 * @method: a method
1089 *
1090 * Returns the generic context for method if it's inflated, otherwise
1091 * NULL.
1092 */
1093 MonoGenericContext*
1094 mono_method_get_context (MonoMethod *method)
1095 {
1096 return mono_method_get_context_general (method, FALSE);
1097 }
1098
1099 /*
1100 * mono_method_get_generic_container:
1101 *
1102 * Returns the generic container of METHOD, which should be a generic method definition.
1103 * Returns NULL if METHOD is not a generic method definition.
1104 * LOCKING: Acquires the loader lock.
1105 */
1106 MonoGenericContainer*
1107 mono_method_get_generic_container (MonoMethod *method)
1108 {
1109 MonoGenericContainer *container;
1110
1111 if (!method->is_generic)
1112 return NULL;
1113
1114 container = mono_image_property_lookup (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER);
1115 g_assert (container);
1116
1117 return container;
1118 }
1119
1120 /*
1121 * mono_method_set_generic_container:
1122 *
1123 * Sets the generic container of METHOD to CONTAINER.
1124 * LOCKING: Acquires the loader lock.
1125 */
1126 void
1127 mono_method_set_generic_container (MonoMethod *method, MonoGenericContainer* container)
1128 {
1129 g_assert (method->is_generic);
1130
1131 mono_image_property_insert (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER, container);
1132 }
1133
1134 /**
1135 * mono_class_find_enum_basetype:
1136 * @class: The enum class
1137 *
1138 * Determine the basetype of an enum by iterating through its fields. We do this
1139 * in a separate function since it is cheaper than calling mono_class_setup_fields.
1140 */
1141 static MonoType*
1142 mono_class_find_enum_basetype (MonoClass *class)
1143 {
1144 MonoGenericContainer *container = NULL;
1145 MonoImage *m = class->image;
1146 const int top = class->field.count;
1147 int i;
1148
1149 g_assert (class->enumtype);
1150
1151 if (class->generic_container)
1152 container = class->generic_container;
1153 else if (class->generic_class) {
1154 MonoClass *gklass = class->generic_class->container_class;
1155
1156 container = gklass->generic_container;
1157 g_assert (container);
1158 }
1159
1160 /*
1161 * Fetch all the field information.
1162 */
1163 for (i = 0; i < top; i++){
1164 const char *sig;
1165 guint32 cols [MONO_FIELD_SIZE];
1166 int idx = class->field.first + i;
1167 MonoType *ftype;
1168
1169 /* class->field.first and idx points into the fieldptr table */
1170 mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
1171
1172 if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_STATIC) //no need to decode static fields
1173 continue;
1174
1175 if (!mono_verifier_verify_field_signature (class->image, cols [MONO_FIELD_SIGNATURE], NULL))
1176 return NULL;
1177
1178 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
1179 mono_metadata_decode_value (sig, &sig);
1180 /* FIELD signature == 0x06 */
1181 if (*sig != 0x06)
1182 return NULL;
1183
1184 ftype = mono_metadata_parse_type_full (m, container, MONO_PARSE_FIELD, cols [MONO_FIELD_FLAGS], sig + 1, &sig);
1185 if (!ftype)
1186 return NULL;
1187 if (class->generic_class) {
1188 //FIXME do we leak here?
1189 ftype = mono_class_inflate_generic_type (ftype, mono_class_get_context (class));
1190 ftype->attrs = cols [MONO_FIELD_FLAGS];
1191 }
1192
1193 return ftype;
1194 }
1195
1196 return NULL;
1197 }
1198
1199 /*
1200 * Checks for MonoClass::exception_type without resolving all MonoType's into MonoClass'es
1201 */
1202 static gboolean
1203 mono_type_has_exceptions (MonoType *type)
1204 {
1205 switch (type->type) {
1206 case MONO_TYPE_CLASS:
1207 case MONO_TYPE_VALUETYPE:
1208 case MONO_TYPE_SZARRAY:
1209 return type->data.klass->exception_type;
1210 case MONO_TYPE_ARRAY:
1211 return type->data.array->eklass->exception_type;
1212 case MONO_TYPE_GENERICINST:
1213 return mono_generic_class_get_class (type->data.generic_class)->exception_type;
1214 }
1215 return FALSE;
1216 }
1217
1218 /*
1219 * mono_class_alloc:
1220 *
1221 * Allocate memory for some data belonging to CLASS, either from its image's mempool,
1222 * or from the heap.
1223 */
1224 static gpointer
1225 mono_class_alloc (MonoClass *class, int size)
1226 {
1227 if (class->generic_class)
1228 return mono_image_set_alloc (class->generic_class->owner, size);
1229 else
1230 return mono_image_alloc (class->image, size);
1231 }
1232
1233 static gpointer
1234 mono_class_alloc0 (MonoClass *class, int size)
1235 {
1236 gpointer res;
1237
1238 res = mono_class_alloc (class, size);
1239 memset (res, 0, size);
1240 return res;
1241 }
1242
1243 #define mono_class_new0(class,struct_type, n_structs) \
1244 ((struct_type *) mono_class_alloc0 ((class), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
1245
1246 /**
1247 * mono_class_setup_basic_field_info:
1248 * @class: The class to initialize
1249 *
1250 * Initializes the class->fields.
1251 * LOCKING: Assumes the loader lock is held.
1252 */
1253 static void
1254 mono_class_setup_basic_field_info (MonoClass *class)
1255 {
1256 MonoClassField *field;
1257 MonoClass *gtd;
1258 MonoImage *image;
1259 int i, top;
1260
1261 if (class->fields)
1262 return;
1263
1264 gtd = class->generic_class ? mono_class_get_generic_type_definition (class) : NULL;
1265 image = class->image;
1266 top = class->field.count;
1267
1268 if (class->generic_class && class->generic_class->container_class->image->dynamic && !class->generic_class->container_class->wastypebuilder) {
1269 /*
1270 * This happens when a generic instance of an unfinished generic typebuilder
1271 * is used as an element type for creating an array type. We can't initialize
1272 * the fields of this class using the fields of gklass, since gklass is not
1273 * finished yet, fields could be added to it later.
1274 */
1275 return;
1276 }
1277
1278 if (gtd) {
1279 mono_class_setup_basic_field_info (gtd);
1280
1281 top = gtd->field.count;
1282 class->field.first = gtd->field.first;
1283 class->field.count = gtd->field.count;
1284 }
1285
1286 class->fields = mono_class_alloc0 (class, sizeof (MonoClassField) * top);
1287
1288 /*
1289 * Fetch all the field information.
1290 */
1291 for (i = 0; i < top; i++){
1292 field = &class->fields [i];
1293 field->parent = class;
1294
1295 if (gtd) {
1296 field->name = mono_field_get_name (&gtd->fields [i]);
1297 } else {
1298 int idx = class->field.first + i;
1299 /* class->field.first and idx points into the fieldptr table */
1300 guint32 name_idx = mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_NAME);
1301 /* The name is needed for fieldrefs */
1302 field->name = mono_metadata_string_heap (image, name_idx);
1303 }
1304 }
1305 }
1306
1307 /**
1308 * mono_class_setup_fields:
1309 * @class: The class to initialize
1310 *
1311 * Initializes the class->fields.
1312 * LOCKING: Assumes the loader lock is held.
1313 */
1314 static void
1315 mono_class_setup_fields (MonoClass *class)
1316 {
1317 MonoError error;
1318 MonoImage *m = class->image;
1319 int top;
1320 guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1321 int i, blittable = TRUE;
1322 guint32 real_size = 0;
1323 guint32 packing_size = 0;
1324 gboolean explicit_size;
1325 MonoClassField *field;
1326 MonoGenericContainer *container = NULL;
1327 MonoClass *gtd = class->generic_class ? mono_class_get_generic_type_definition (class) : NULL;
1328
1329 if (class->size_inited)
1330 return;
1331
1332 if (class->generic_class && class->generic_class->container_class->image->dynamic && !class->generic_class->container_class->wastypebuilder) {
1333 /*
1334 * This happens when a generic instance of an unfinished generic typebuilder
1335 * is used as an element type for creating an array type. We can't initialize
1336 * the fields of this class using the fields of gklass, since gklass is not
1337 * finished yet, fields could be added to it later.
1338 */
1339 return;
1340 }
1341
1342 mono_class_setup_basic_field_info (class);
1343 top = class->field.count;
1344
1345 if (gtd) {
1346 mono_class_setup_fields (gtd);
1347 if (gtd->exception_type) {
1348 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1349 return;
1350 }
1351 }
1352
1353 class->instance_size = 0;
1354 if (!class->rank)
1355 class->sizes.class_size = 0;
1356
1357 if (class->parent) {
1358 /* For generic instances, class->parent might not have been initialized */
1359 mono_class_init (class->parent);
1360 if (!class->parent->size_inited) {
1361 mono_class_setup_fields (class->parent);
1362 if (class->parent->exception_type) {
1363 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1364 return;
1365 }
1366 }
1367 class->instance_size += class->parent->instance_size;
1368 class->min_align = class->parent->min_align;
1369 /* we use |= since it may have been set already */
1370 class->has_references |= class->parent->has_references;
1371 blittable = class->parent->blittable;
1372 } else {
1373 class->instance_size = sizeof (MonoObject);
1374 class->min_align = 1;
1375 }
1376
1377 /* We can't really enable 16 bytes alignment until the GC supports it.
1378 The whole layout/instance size code must be reviewed because we do alignment calculation in terms of the
1379 boxed instance, which leads to unexplainable holes at the beginning of an object embedding a simd type.
1380 Bug #506144 is an example of this issue.
1381
1382 if (class->simd_type)
1383 class->min_align = 16;
1384 */
1385 /* Get the real size */
1386 explicit_size = mono_metadata_packing_from_typedef (class->image, class->type_token, &packing_size, &real_size);
1387
1388 if (explicit_size) {
1389 g_assert ((packing_size & 0xfffffff0) == 0);
1390 class->packing_size = packing_size;
1391 real_size += class->instance_size;
1392 }
1393
1394 if (!top) {
1395 if (explicit_size && real_size) {
1396 class->instance_size = MAX (real_size, class->instance_size);
1397 }
1398 class->size_inited = 1;
1399 class->blittable = blittable;
1400 return;
1401 }
1402
1403 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT)
1404 blittable = FALSE;
1405
1406 /* Prevent infinite loops if the class references itself */
1407 class->size_inited = 1;
1408
1409 if (class->generic_container) {
1410 container = class->generic_container;
1411 } else if (gtd) {
1412 container = gtd->generic_container;
1413 g_assert (container);
1414 }
1415
1416 /*
1417 * Fetch all the field information.
1418 */
1419 for (i = 0; i < top; i++){
1420 int idx = class->field.first + i;
1421 field = &class->fields [i];
1422
1423 field->parent = class;
1424
1425 if (!field->type) {
1426 mono_field_resolve_type (field, &error);
1427 if (!mono_error_ok (&error)) {
1428 /*mono_field_resolve_type already failed class*/
1429 mono_error_cleanup (&error);
1430 return;
1431 }
1432 if (!field->type)
1433 g_error ("could not resolve %s:%s\n", mono_type_get_full_name(class), field->name);
1434 g_assert (field->type);
1435 }
1436
1437 if (mono_field_is_deleted (field))
1438 continue;
1439 if (gtd) {
1440 MonoClassField *gfield = &gtd->fields [i];
1441 field->offset = gfield->offset;
1442 } else {
1443 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1444 guint32 offset;
1445 mono_metadata_field_info (m, idx, &offset, NULL, NULL);
1446 field->offset = offset;
1447
1448 if (field->offset == (guint32)-1 && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1449 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Missing field layout info for %s", field->name));
1450 break;
1451 }
1452 if (field->offset < -1) { /*-1 is used to encode special static fields */
1453 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Invalid negative field offset %d for %s", field->offset, field->name));
1454 break;
1455 }
1456 }
1457 }
1458
1459 /* Only do these checks if we still think this type is blittable */
1460 if (blittable && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1461 if (field->type->byref || MONO_TYPE_IS_REFERENCE (field->type)) {
1462 blittable = FALSE;
1463 } else {
1464 MonoClass *field_class = mono_class_from_mono_type (field->type);
1465 if (field_class) {
1466 mono_class_setup_fields (field_class);
1467 if (field_class->exception_type) {
1468 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1469 break;
1470 }
1471 }
1472 if (!field_class || !field_class->blittable)
1473 blittable = FALSE;
1474 }
1475 }
1476
1477 if (class->enumtype && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1478 class->cast_class = class->element_class = mono_class_from_mono_type (field->type);
1479 blittable = class->element_class->blittable;
1480 }
1481
1482 if (mono_type_has_exceptions (field->type)) {
1483 char *class_name = mono_type_get_full_name (class);
1484 char *type_name = mono_type_full_name (field->type);
1485
1486 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1487 g_warning ("Invalid type %s for instance field %s:%s", type_name, class_name, field->name);
1488 g_free (class_name);
1489 g_free (type_name);
1490 break;
1491 }
1492 /* The def_value of fields is compute lazily during vtable creation */
1493 }
1494
1495 if (class == mono_defaults.string_class)
1496 blittable = FALSE;
1497
1498 class->blittable = blittable;
1499
1500 if (class->enumtype && !mono_class_enum_basetype (class)) {
1501 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1502 return;
1503 }
1504 if (explicit_size && real_size) {
1505 class->instance_size = MAX (real_size, class->instance_size);
1506 }
1507
1508 if (class->exception_type)
1509 return;
1510 mono_class_layout_fields (class);
1511
1512 /*valuetypes can't be neither bigger than 1Mb or empty. */
1513 if (class->valuetype && (class->instance_size <= 0 || class->instance_size > (0x100000 + sizeof (MonoObject))))
1514 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1515 }
1516
1517 /**
1518 * mono_class_setup_fields_locking:
1519 * @class: The class to initialize
1520 *
1521 * Initializes the class->fields array of fields.
1522 * Aquires the loader lock.
1523 */
1524 static void
1525 mono_class_setup_fields_locking (MonoClass *class)
1526 {
1527 mono_loader_lock ();
1528 mono_class_setup_fields (class);
1529 mono_loader_unlock ();
1530 }
1531
1532 /*
1533 * mono_class_has_references:
1534 *
1535 * Returns whenever @klass->has_references is set, initializing it if needed.
1536 * Aquires the loader lock.
1537 */
1538 static gboolean
1539 mono_class_has_references (MonoClass *klass)
1540 {
1541 if (klass->init_pending) {
1542 /* Be conservative */
1543 return TRUE;
1544 } else {
1545 mono_class_init (klass);
1546
1547 return klass->has_references;
1548 }
1549 }
1550
1551 /*
1552 * mono_type_get_basic_type_from_generic:
1553 * @type: a type
1554 *
1555 * Returns a closed type corresponding to the possibly open type
1556 * passed to it.
1557 */
1558 MonoType*
1559 mono_type_get_basic_type_from_generic (MonoType *type)
1560 {
1561 /* When we do generic sharing we let type variables stand for reference types. */
1562 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR))
1563 return &mono_defaults.object_class->byval_arg;
1564 return type;
1565 }
1566
1567 /*
1568 * mono_class_layout_fields:
1569 * @class: a class
1570 *
1571 * Compute the placement of fields inside an object or struct, according to
1572 * the layout rules and set the following fields in @class:
1573 * - has_references (if the class contains instance references firled or structs that contain references)
1574 * - has_static_refs (same, but for static fields)
1575 * - instance_size (size of the object in memory)
1576 * - class_size (size needed for the static fields)
1577 * - size_inited (flag set when the instance_size is set)
1578 *
1579 * LOCKING: this is supposed to be called with the loader lock held.
1580 */
1581 void
1582 mono_class_layout_fields (MonoClass *class)
1583 {
1584 int i;
1585 const int top = class->field.count;
1586 guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1587 guint32 pass, passes, real_size;
1588 gboolean gc_aware_layout = FALSE;
1589 MonoClassField *field;
1590
1591 /*
1592 * When we do generic sharing we need to have layout
1593 * information for open generic classes (either with a generic
1594 * context containing type variables or with a generic
1595 * container), so we don't return in that case anymore.
1596 */
1597
1598 /*
1599 * Enable GC aware auto layout: in this mode, reference
1600 * fields are grouped together inside objects, increasing collector
1601 * performance.
1602 * Requires that all classes whose layout is known to native code be annotated
1603 * with [StructLayout (LayoutKind.Sequential)]
1604 * Value types have gc_aware_layout disabled by default, as per
1605 * what the default is for other runtimes.
1606 */
1607 /* corlib is missing [StructLayout] directives in many places */
1608 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1609 if (class->byval_arg.type != MONO_TYPE_VALUETYPE)
1610 gc_aware_layout = TRUE;
1611 }
1612
1613 /* Compute klass->has_references */
1614 /*
1615 * Process non-static fields first, since static fields might recursively
1616 * refer to the class itself.
1617 */
1618 for (i = 0; i < top; i++) {
1619 MonoType *ftype;
1620
1621 field = &class->fields [i];
1622
1623 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1624 ftype = mono_type_get_underlying_type (field->type);
1625 ftype = mono_type_get_basic_type_from_generic (ftype);
1626 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1627 class->has_references = TRUE;
1628 }
1629 }
1630
1631 for (i = 0; i < top; i++) {
1632 MonoType *ftype;
1633
1634 field = &class->fields [i];
1635
1636 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
1637 ftype = mono_type_get_underlying_type (field->type);
1638 ftype = mono_type_get_basic_type_from_generic (ftype);
1639 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1640 class->has_static_refs = TRUE;
1641 }
1642 }
1643
1644 for (i = 0; i < top; i++) {
1645 MonoType *ftype;
1646
1647 field = &class->fields [i];
1648
1649 ftype = mono_type_get_underlying_type (field->type);
1650 ftype = mono_type_get_basic_type_from_generic (ftype);
1651 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
1652 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1653 class->has_static_refs = TRUE;
1654 else
1655 class->has_references = TRUE;
1656 }
1657 }
1658
1659 /*
1660 * Compute field layout and total size (not considering static fields)
1661 */
1662
1663 switch (layout) {
1664 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
1665 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
1666
1667 if (gc_aware_layout)
1668 passes = 2;
1669 else
1670 passes = 1;
1671
1672 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
1673 passes = 1;
1674
1675 if (class->parent) {
1676 mono_class_setup_fields (class->parent);
1677 if (class->parent->exception_type) {
1678 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1679 return;
1680 }
1681 real_size = class->parent->instance_size;
1682 } else {
1683 real_size = sizeof (MonoObject);
1684 }
1685
1686 for (pass = 0; pass < passes; ++pass) {
1687 for (i = 0; i < top; i++){
1688 gint32 align;
1689 guint32 size;
1690 MonoType *ftype;
1691
1692 field = &class->fields [i];
1693
1694 if (mono_field_is_deleted (field))
1695 continue;
1696 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1697 continue;
1698
1699 ftype = mono_type_get_underlying_type (field->type);
1700 ftype = mono_type_get_basic_type_from_generic (ftype);
1701 if (gc_aware_layout) {
1702 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
1703 if (pass == 1)
1704 continue;
1705 } else {
1706 if (pass == 0)
1707 continue;
1708 }
1709 }
1710
1711 if ((top == 1) && (class->instance_size == sizeof (MonoObject)) &&
1712 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
1713 /* This field is a hack inserted by MCS to empty structures */
1714 continue;
1715 }
1716
1717 size = mono_type_size (field->type, &align);
1718
1719 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
1720 align = class->packing_size ? MIN (class->packing_size, align): align;
1721 /* if the field has managed references, we need to force-align it
1722 * see bug #77788
1723 */
1724 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1725 align = MAX (align, sizeof (gpointer));
1726
1727 class->min_align = MAX (align, class->min_align);
1728 field->offset = real_size;
1729 if (align) {
1730 field->offset += align - 1;
1731 field->offset &= ~(align - 1);
1732 }
1733 /*TypeBuilders produce all sort of weird things*/
1734 g_assert (class->image->dynamic || field->offset > 0);
1735 real_size = field->offset + size;
1736 }
1737
1738 class->instance_size = MAX (real_size, class->instance_size);
1739
1740 if (class->instance_size & (class->min_align - 1)) {
1741 class->instance_size += class->min_align - 1;
1742 class->instance_size &= ~(class->min_align - 1);
1743 }
1744 }
1745 break;
1746 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
1747 real_size = 0;
1748 for (i = 0; i < top; i++) {
1749 gint32 align;
1750 guint32 size;
1751 MonoType *ftype;
1752
1753 field = &class->fields [i];
1754
1755 /*
1756 * There must be info about all the fields in a type if it
1757 * uses explicit layout.
1758 */
1759
1760 if (mono_field_is_deleted (field))
1761 continue;
1762 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1763 continue;
1764
1765 size = mono_type_size (field->type, &align);
1766 class->min_align = MAX (align, class->min_align);
1767
1768 /*
1769 * When we get here, field->offset is already set by the
1770 * loader (for either runtime fields or fields loaded from metadata).
1771 * The offset is from the start of the object: this works for both
1772 * classes and valuetypes.
1773 */
1774 field->offset += sizeof (MonoObject);
1775 ftype = mono_type_get_underlying_type (field->type);
1776 ftype = mono_type_get_basic_type_from_generic (ftype);
1777 if (MONO_TYPE_IS_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
1778 if (field->offset % sizeof (gpointer)) {
1779 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1780 }
1781 }
1782
1783 /*
1784 * Calc max size.
1785 */
1786 real_size = MAX (real_size, size + field->offset);
1787 }
1788 class->instance_size = MAX (real_size, class->instance_size);
1789 break;
1790 }
1791
1792 if (layout != TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1793 /*
1794 * For small structs, set min_align to at least the struct size to improve
1795 * performance, and since the JIT memset/memcpy code assumes this and generates
1796 * unaligned accesses otherwise. See #78990 for a testcase.
1797 */
1798 if (class->instance_size <= sizeof (MonoObject) + sizeof (gpointer))
1799 class->min_align = MAX (class->min_align, class->instance_size - sizeof (MonoObject));
1800 }
1801
1802 class->size_inited = 1;
1803
1804 /*
1805 * Compute static field layout and size
1806 */
1807 for (i = 0; i < top; i++){
1808 gint32 align;
1809 guint32 size;
1810
1811 field = &class->fields [i];
1812
1813 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC) || field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
1814 continue;
1815 if (mono_field_is_deleted (field))
1816 continue;
1817
1818 if (mono_type_has_exceptions (field->type)) {
1819 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1820 break;
1821 }
1822
1823 size = mono_type_size (field->type, &align);
1824 field->offset = class->sizes.class_size;
1825 /*align is always non-zero here*/
1826 field->offset += align - 1;
1827 field->offset &= ~(align - 1);
1828 class->sizes.class_size = field->offset + size;
1829 }
1830 }
1831
1832 static MonoMethod*
1833 create_array_method (MonoClass *class, const char *name, MonoMethodSignature *sig)
1834 {
1835 MonoMethod *method;
1836
1837 method = (MonoMethod *) mono_image_alloc0 (class->image, sizeof (MonoMethodPInvoke));
1838 method->klass = class;
1839 method->flags = METHOD_ATTRIBUTE_PUBLIC;
1840 method->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
1841 method->signature = sig;
1842 method->name = name;
1843 method->slot = -1;
1844 /* .ctor */
1845 if (name [0] == '.') {
1846 method->flags |= METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
1847 } else {
1848 method->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
1849 }
1850 return method;
1851 }
1852
1853 /*
1854 * mono_class_setup_methods:
1855 * @class: a class
1856 *
1857 * Initializes the 'methods' array in the klass.
1858 * Calling this method should be avoided if possible since it allocates a lot
1859 * of long-living MonoMethod structures.
1860 * Methods belonging to an interface are assigned a sequential slot starting
1861 * from 0.
1862 *
1863 * On failure this function sets class->exception_type
1864 */
1865 void
1866 mono_class_setup_methods (MonoClass *class)
1867 {
1868 int i;
1869 MonoMethod **methods;
1870
1871 if (class->methods)
1872 return;
1873
1874 mono_loader_lock ();
1875
1876 if (class->methods) {
1877 mono_loader_unlock ();
1878 return;
1879 }
1880
1881 if (class->generic_class) {
1882 MonoError error;
1883 MonoClass *gklass = class->generic_class->container_class;
1884
1885 mono_class_init (gklass);
1886 if (!gklass->exception_type)
1887 mono_class_setup_methods (gklass);
1888 if (gklass->exception_type) {
1889 /*FIXME make exception_data less opaque so it's possible to dup it here*/
1890 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
1891 mono_loader_unlock ();
1892 return;
1893 }
1894
1895 /* The + 1 makes this always non-NULL to pass the check in mono_class_setup_methods () */
1896 class->method.count = gklass->method.count;
1897 methods = mono_class_alloc0 (class, sizeof (MonoMethod*) * (class->method.count + 1));
1898
1899 for (i = 0; i < class->method.count; i++) {
1900 methods [i] = mono_class_inflate_generic_method_full_checked (
1901 gklass->methods [i], class, mono_class_get_context (class), &error);
1902 if (!mono_error_ok (&error)) {
1903 char *method = mono_method_full_name (gklass->methods [i], TRUE);
1904 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Could not inflate method %s due to %s", method, mono_error_get_message (&error)));
1905
1906 g_free (method);
1907 mono_error_cleanup (&error);
1908 mono_loader_unlock ();
1909 return;
1910 }
1911 }
1912 } else if (class->rank) {
1913 MonoError error;
1914 MonoMethod *amethod;
1915 MonoMethodSignature *sig;
1916 int count_generic = 0, first_generic = 0;
1917 int method_num = 0;
1918
1919 class->method.count = 3 + (class->rank > 1? 2: 1);
1920
1921 mono_class_setup_interfaces (class, &error);
1922 g_assert (mono_error_ok (&error)); /*FIXME can this fail for array types?*/
1923
1924 if (class->interface_count) {
1925 count_generic = generic_array_methods (class);
1926 first_generic = class->method.count;
1927 class->method.count += class->interface_count * count_generic;
1928 }
1929
1930 methods = mono_class_alloc0 (class, sizeof (MonoMethod*) * class->method.count);
1931
1932 sig = mono_metadata_signature_alloc (class->image, class->rank);
1933 sig->ret = &mono_defaults.void_class->byval_arg;
1934 sig->pinvoke = TRUE;
1935 sig->hasthis = TRUE;
1936 for (i = 0; i < class->rank; ++i)
1937 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1938
1939 amethod = create_array_method (class, ".ctor", sig);
1940 methods [method_num++] = amethod;
1941 if (class->rank > 1) {
1942 sig = mono_metadata_signature_alloc (class->image, class->rank * 2);
1943 sig->ret = &mono_defaults.void_class->byval_arg;
1944 sig->pinvoke = TRUE;
1945 sig->hasthis = TRUE;
1946 for (i = 0; i < class->rank * 2; ++i)
1947 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1948
1949 amethod = create_array_method (class, ".ctor", sig);
1950 methods [method_num++] = amethod;
1951 }
1952 /* element Get (idx11, [idx2, ...]) */
1953 sig = mono_metadata_signature_alloc (class->image, class->rank);
1954 sig->ret = &class->element_class->byval_arg;
1955 sig->pinvoke = TRUE;
1956 sig->hasthis = TRUE;
1957 for (i = 0; i < class->rank; ++i)
1958 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1959 amethod = create_array_method (class, "Get", sig);
1960 methods [method_num++] = amethod;
1961 /* element& Address (idx11, [idx2, ...]) */
1962 sig = mono_metadata_signature_alloc (class->image, class->rank);
1963 sig->ret = &class->element_class->this_arg;
1964 sig->pinvoke = TRUE;
1965 sig->hasthis = TRUE;
1966 for (i = 0; i < class->rank; ++i)
1967 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1968 amethod = create_array_method (class, "Address", sig);
1969 methods [method_num++] = amethod;
1970 /* void Set (idx11, [idx2, ...], element) */
1971 sig = mono_metadata_signature_alloc (class->image, class->rank + 1);
1972 sig->ret = &mono_defaults.void_class->byval_arg;
1973 sig->pinvoke = TRUE;
1974 sig->hasthis = TRUE;
1975 for (i = 0; i < class->rank; ++i)
1976 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1977 sig->params [i] = &class->element_class->byval_arg;
1978 amethod = create_array_method (class, "Set", sig);
1979 methods [method_num++] = amethod;
1980
1981 for (i = 0; i < class->interface_count; i++)
1982 setup_generic_array_ifaces (class, class->interfaces [i], methods, first_generic + i * count_generic);
1983 } else {
1984 methods = mono_class_alloc (class, sizeof (MonoMethod*) * class->method.count);
1985 for (i = 0; i < class->method.count; ++i) {
1986 int idx = mono_metadata_translate_token_index (class->image, MONO_TABLE_METHOD, class->method.first + i + 1);
1987 methods [i] = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | idx, class);
1988 }
1989 }
1990
1991 if (MONO_CLASS_IS_INTERFACE (class)) {
1992 int slot = 0;
1993 /*Only assign slots to virtual methods as interfaces are allowed to have static methods.*/
1994 for (i = 0; i < class->method.count; ++i) {
1995 if (methods [i]->flags & METHOD_ATTRIBUTE_VIRTUAL)
1996 methods [i]->slot = slot++;
1997 }
1998 }
1999
2000 /* Needed because of the double-checking locking pattern */
2001 mono_memory_barrier ();
2002
2003 class->methods = methods;
2004
2005 if (mono_debugger_class_loaded_methods_func)
2006 mono_debugger_class_loaded_methods_func (class);
2007
2008 mono_loader_unlock ();
2009 }
2010
2011 /*
2012 * mono_class_get_method_by_index:
2013 *
2014 * Returns class->methods [index], initializing class->methods if neccesary.
2015 *
2016 * LOCKING: Acquires the loader lock.
2017 */
2018 MonoMethod*
2019 mono_class_get_method_by_index (MonoClass *class, int index)
2020 {
2021 /* Avoid calling setup_methods () if possible */
2022 if (class->generic_class && !class->methods) {
2023 MonoClass *gklass = class->generic_class->container_class;
2024 MonoMethod *m;
2025
2026 m = mono_class_inflate_generic_method_full (
2027 gklass->methods [index], class, mono_class_get_context (class));
2028 /*
2029 * If setup_methods () is called later for this class, no duplicates are created,
2030 * since inflate_generic_method guarantees that only one instance of a method
2031 * is created for each context.
2032 */
2033 /*
2034 mono_class_setup_methods (class);
2035 g_assert (m == class->methods [index]);
2036 */
2037 return m;
2038 } else {
2039 mono_class_setup_methods (class);
2040 if (class->exception_type) /*FIXME do proper error handling*/
2041 return NULL;
2042 g_assert (index >= 0 && index < class->method.count);
2043 return class->methods [index];
2044 }
2045 }
2046
2047 /*
2048 * mono_class_get_inflated_method:
2049 *
2050 * Given an inflated class CLASS and a method METHOD which should be a method of
2051 * CLASS's generic definition, return the inflated method corresponding to METHOD.
2052 */
2053 MonoMethod*
2054 mono_class_get_inflated_method (MonoClass *class, MonoMethod *method)
2055 {
2056 MonoClass *gklass = class->generic_class->container_class;
2057 int i;
2058
2059 g_assert (method->klass == gklass);
2060
2061 mono_class_setup_methods (gklass);
2062 g_assert (!gklass->exception_type); /*FIXME do proper error handling*/
2063
2064 for (i = 0; i < gklass->method.count; ++i) {
2065 if (gklass->methods [i] == method) {
2066 if (class->methods)
2067 return class->methods [i];
2068 else
2069 return mono_class_inflate_generic_method_full (gklass->methods [i], class, mono_class_get_context (class));
2070 }
2071 }
2072
2073 return NULL;
2074 }
2075
2076 /*
2077 * mono_class_get_vtable_entry:
2078 *
2079 * Returns class->vtable [offset], computing it if neccesary. Returns NULL on failure.
2080 * LOCKING: Acquires the loader lock.
2081 */
2082 MonoMethod*
2083 mono_class_get_vtable_entry (MonoClass *class, int offset)
2084 {
2085 MonoMethod *m;
2086
2087 if (class->rank == 1) {
2088 /*
2089 * szarrays do not overwrite any methods of Array, so we can avoid
2090 * initializing their vtables in some cases.
2091 */
2092 mono_class_setup_vtable (class->parent);
2093 if (offset < class->parent->vtable_size)
2094 return class->parent->vtable [offset];
2095 }
2096
2097 if (class->generic_class) {
2098 MonoClass *gklass = class->generic_class->container_class;
2099 mono_class_setup_vtable (gklass);
2100 m = gklass->vtable [offset];
2101
2102 m = mono_class_inflate_generic_method_full (m, class, mono_class_get_context (class));
2103 } else {
2104 mono_class_setup_vtable (class);
2105 if (class->exception_type)
2106 return NULL;
2107 m = class->vtable [offset];
2108 }
2109
2110 return m;
2111 }
2112
2113 /*
2114 * mono_class_get_vtable_size:
2115 *
2116 * Return the vtable size for KLASS.
2117 */
2118 int
2119 mono_class_get_vtable_size (MonoClass *klass)
2120 {
2121 mono_class_setup_vtable (klass);
2122
2123 return klass->vtable_size;
2124 }
2125
2126 /*This method can fail the class.*/
2127 static void
2128 mono_class_setup_properties (MonoClass *class)
2129 {
2130 guint startm, endm, i, j;
2131 guint32 cols [MONO_PROPERTY_SIZE];
2132 MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
2133 MonoProperty *properties;
2134 guint32 last;
2135
2136 if (class->ext && class->ext->properties)
2137 return;
2138
2139 mono_loader_lock ();
2140
2141 if (class->ext && class->ext->properties) {
2142 mono_loader_unlock ();
2143 return;
2144 }
2145
2146 mono_class_alloc_ext (class);
2147
2148 if (class->generic_class) {
2149 MonoClass *gklass = class->generic_class->container_class;
2150
2151 mono_class_init (gklass);
2152 mono_class_setup_properties (gklass);
2153 if (gklass->exception_type) {
2154 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2155 mono_loader_unlock ();
2156 return;
2157 }
2158
2159 class->ext->property = gklass->ext->property;
2160
2161 properties = mono_class_new0 (class, MonoProperty, class->ext->property.count + 1);
2162
2163 for (i = 0; i < class->ext->property.count; i++) {
2164 MonoProperty *prop = &properties [i];
2165
2166 *prop = gklass->ext->properties [i];
2167
2168 if (prop->get)
2169 prop->get = mono_class_inflate_generic_method_full (
2170 prop->get, class, mono_class_get_context (class));
2171 if (prop->set)
2172 prop->set = mono_class_inflate_generic_method_full (
2173 prop->set, class, mono_class_get_context (class));
2174
2175 prop->parent = class;
2176 }
2177 } else {
2178 int first = mono_metadata_properties_from_typedef (class->image, mono_metadata_token_index (class->type_token) - 1, &last);
2179 int count = last - first;
2180
2181 if (count) {
2182 mono_class_setup_methods (class);
2183 if (class->exception_type) {
2184 mono_loader_unlock ();
2185 return;
2186 }
2187 }
2188
2189 class->ext->property.first = first;
2190 class->ext->property.count = count;
2191 properties = mono_class_alloc0 (class, sizeof (MonoProperty) * count);
2192 for (i = first; i < last; ++i) {
2193 mono_metadata_decode_table_row (class->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
2194 properties [i - first].parent = class;
2195 properties [i - first].attrs = cols [MONO_PROPERTY_FLAGS];
2196 properties [i - first].name = mono_metadata_string_heap (class->image, cols [MONO_PROPERTY_NAME]);
2197
2198 startm = mono_metadata_methods_from_property (class->image, i, &endm);
2199 for (j = startm; j < endm; ++j) {
2200 MonoMethod *method;
2201
2202 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2203
2204 if (class->image->uncompressed_metadata)
2205 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2206 method = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], class);
2207 else
2208 method = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
2209
2210 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2211 case METHOD_SEMANTIC_SETTER:
2212 properties [i - first].set = method;
2213 break;
2214 case METHOD_SEMANTIC_GETTER:
2215 properties [i - first].get = method;
2216 break;
2217 default:
2218 break;
2219 }
2220 }
2221 }
2222 }
2223 /*Flush any pending writes as we do double checked locking on class->properties */
2224 mono_memory_barrier ();
2225
2226 /* Leave this assignment as the last op in the function */
2227 class->ext->properties = properties;
2228
2229 mono_loader_unlock ();
2230 }
2231
2232 static MonoMethod**
2233 inflate_method_listz (MonoMethod **methods, MonoClass *class, MonoGenericContext *context)
2234 {
2235 MonoMethod **om, **retval;
2236 int count;
2237
2238 for (om = methods, count = 0; *om; ++om, ++count)
2239 ;
2240
2241 retval = g_new0 (MonoMethod*, count + 1);
2242 count = 0;
2243 for (om = methods, count = 0; *om; ++om, ++count)
2244 retval [count] = mono_class_inflate_generic_method_full (*om, class, context);
2245
2246 return retval;
2247 }
2248
2249 /*This method can fail the class.*/
2250 static void
2251 mono_class_setup_events (MonoClass *class)
2252 {
2253 int first, count;
2254 guint startm, endm, i, j;
2255 guint32 cols [MONO_EVENT_SIZE];
2256 MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
2257 guint32 last;
2258 MonoEvent *events;
2259
2260 if (class->ext && class->ext->events)
2261 return;
2262
2263 mono_loader_lock ();
2264
2265 if (class->ext && class->ext->events) {
2266 mono_loader_unlock ();
2267 return;
2268 }
2269
2270 mono_class_alloc_ext (class);
2271
2272 if (class->generic_class) {
2273 MonoClass *gklass = class->generic_class->container_class;
2274 MonoGenericContext *context;
2275
2276 mono_class_setup_events (gklass);
2277 if (gklass->exception_type) {
2278 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2279 mono_loader_unlock ();
2280 return;
2281 }
2282
2283 class->ext->event = gklass->ext->event;
2284 class->ext->events = mono_class_new0 (class, MonoEvent, class->ext->event.count);
2285
2286 if (class->ext->event.count)
2287 context = mono_class_get_context (class);
2288
2289 for (i = 0; i < class->ext->event.count; i++) {
2290 MonoEvent *event = &class->ext->events [i];
2291 MonoEvent *gevent = &gklass->ext->events [i];
2292
2293 event->parent = class;
2294 event->name = gevent->name;
2295 event->add = gevent->add ? mono_class_inflate_generic_method_full (gevent->add, class, context) : NULL;
2296 event->remove = gevent->remove ? mono_class_inflate_generic_method_full (gevent->remove, class, context) : NULL;
2297 event->raise = gevent->raise ? mono_class_inflate_generic_method_full (gevent->raise, class, context) : NULL;
2298 #ifndef MONO_SMALL_CONFIG
2299 event->other = gevent->other ? inflate_method_listz (gevent->other, class, context) : NULL;
2300 #endif
2301 event->attrs = gevent->attrs;
2302 }
2303
2304 mono_loader_unlock ();
2305 return;
2306 }
2307
2308 first = mono_metadata_events_from_typedef (class->image, mono_metadata_token_index (class->type_token) - 1, &last);
2309 count = last - first;
2310
2311 if (count) {
2312 mono_class_setup_methods (class);
2313 if (class->exception_type) {
2314 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2315 mono_loader_unlock ();
2316 return;
2317 }
2318 }
2319 class->ext->event.first = first;
2320 class->ext->event.count = count;
2321 events = mono_class_alloc0 (class, sizeof (MonoEvent) * class->ext->event.count);
2322 for (i = first; i < last; ++i) {
2323 MonoEvent *event = &events [i - first];
2324
2325 mono_metadata_decode_table_row (class->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
2326 event->parent = class;
2327 event->attrs = cols [MONO_EVENT_FLAGS];
2328 event->name = mono_metadata_string_heap (class->image, cols [MONO_EVENT_NAME]);
2329
2330 startm = mono_metadata_methods_from_event (class->image, i, &endm);
2331 for (j = startm; j < endm; ++j) {
2332 MonoMethod *method;
2333
2334 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2335
2336 if (class->image->uncompressed_metadata)
2337 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2338 method = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], class);
2339 else
2340 method = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
2341
2342 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2343 case METHOD_SEMANTIC_ADD_ON:
2344 event->add = method;
2345 break;
2346 case METHOD_SEMANTIC_REMOVE_ON:
2347 event->remove = method;
2348 break;
2349 case METHOD_SEMANTIC_FIRE:
2350 event->raise = method;
2351 break;
2352 case METHOD_SEMANTIC_OTHER: {
2353 #ifndef MONO_SMALL_CONFIG
2354 int n = 0;
2355
2356 if (event->other == NULL) {
2357 event->other = g_new0 (MonoMethod*, 2);
2358 } else {
2359 while (event->other [n])
2360 n++;
2361 event->other = g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
2362 }
2363 event->other [n] = method;
2364 /* NULL terminated */
2365 event->other [n + 1] = NULL;
2366 #endif
2367 break;
2368 }
2369 default:
2370 break;
2371 }
2372 }
2373 }
2374 /*Flush any pending writes as we do double checked locking on class->properties */
2375 mono_memory_barrier ();
2376
2377 /* Leave this assignment as the last op in the function */
2378 class->ext->events = events;
2379
2380 mono_loader_unlock ();
2381 }
2382
2383 /*
2384 * Global pool of interface IDs, represented as a bitset.
2385 * LOCKING: this is supposed to be accessed with the loader lock held.
2386 */
2387 static MonoBitSet *global_interface_bitset = NULL;
2388
2389 /*
2390 * mono_unload_interface_ids:
2391 * @bitset: bit set of interface IDs
2392 *
2393 * When an image is unloaded, the interface IDs associated with
2394 * the image are put back in the global pool of IDs so the numbers
2395 * can be reused.
2396 */
2397 void
2398 mono_unload_interface_ids (MonoBitSet *bitset)
2399 {
2400 mono_loader_lock ();
2401 mono_bitset_sub (global_interface_bitset, bitset);
2402 mono_loader_unlock ();
2403 }
2404
2405 void
2406 mono_unload_interface_id (MonoClass *class)
2407 {
2408 if (class->interface_id) {
2409 mono_loader_lock ();
2410 mono_bitset_clear (global_interface_bitset, class->interface_id);
2411 mono_loader_unlock ();
2412 }
2413 }
2414
2415 /*
2416 * mono_get_unique_iid:
2417 * @class: interface
2418 *
2419 * Assign a unique integer ID to the interface represented by @class.
2420 * The ID will positive and as small as possible.
2421 * LOCKING: this is supposed to be called with the loader lock held.
2422 * Returns: the new ID.
2423 */
2424 static guint
2425 mono_get_unique_iid (MonoClass *class)
2426 {
2427 int iid;
2428
2429 g_assert (MONO_CLASS_IS_INTERFACE (class));
2430
2431 if (!global_interface_bitset) {
2432 global_interface_bitset = mono_bitset_new (128, 0);
2433 }
2434
2435 iid = mono_bitset_find_first_unset (global_interface_bitset, -1);
2436 if (iid < 0) {
2437 int old_size = mono_bitset_size (global_interface_bitset);
2438 MonoBitSet *new_set = mono_bitset_clone (global_interface_bitset, old_size * 2);
2439 mono_bitset_free (global_interface_bitset);
2440 global_interface_bitset = new_set;
2441 iid = old_size;
2442 }
2443 mono_bitset_set (global_interface_bitset, iid);
2444 /* set the bit also in the per-image set */
2445 if (!class->generic_class) {
2446 if (class->image->interface_bitset) {
2447 if (iid >= mono_bitset_size (class->image->interface_bitset)) {
2448 MonoBitSet *new_set = mono_bitset_clone (class->image->interface_bitset, iid + 1);
2449 mono_bitset_free (class->image->interface_bitset);
2450 class->image->interface_bitset = new_set;
2451 }
2452 } else {
2453 class->image->interface_bitset = mono_bitset_new (iid + 1, 0);
2454 }
2455 mono_bitset_set (class->image->interface_bitset, iid);
2456 }
2457
2458 #ifndef MONO_SMALL_CONFIG
2459 if (mono_print_vtable) {
2460 int generic_id;
2461 char *type_name = mono_type_full_name (&class->byval_arg);
2462 if (class->generic_class && !class->generic_class->context.class_inst->is_open) {
2463 generic_id = class->generic_class->context.class_inst->id;
2464 g_assert (generic_id != 0);
2465 } else {
2466 generic_id = 0;
2467 }
2468 printf ("Interface: assigned id %d to %s|%s|%d\n", iid, class->image->name, type_name, generic_id);
2469 g_free (type_name);
2470 }
2471 #endif
2472
2473 g_assert (iid <= 65535);
2474 return iid;
2475 }
2476
2477 static void
2478 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res, MonoError *error)
2479 {
2480 int i;
2481 MonoClass *ic;
2482
2483 mono_class_setup_interfaces (klass, error);
2484 if (!mono_error_ok (error))
2485 return;
2486
2487 for (i = 0; i < klass->interface_count; i++) {
2488 ic = klass->interfaces [i];
2489
2490 if (*res == NULL)
2491 *res = g_ptr_array_new ();
2492 g_ptr_array_add (*res, ic);
2493 mono_class_init (ic);
2494 if (ic->exception_type) {
2495 mono_error_set_type_load_class (error, ic, "Error Loading class");
2496 return;
2497 }
2498
2499 collect_implemented_interfaces_aux (ic, res, error);
2500 if (!mono_error_ok (error))
2501 return;
2502 }
2503 }
2504
2505 GPtrArray*
2506 mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error)
2507 {
2508 GPtrArray *res = NULL;
2509
2510 collect_implemented_interfaces_aux (klass, &res, error);
2511 if (!mono_error_ok (error)) {
2512 if (res)
2513 g_ptr_array_free (res, TRUE);
2514 return NULL;
2515 }
2516 return res;
2517 }
2518
2519 static int
2520 compare_interface_ids (const void *p_key, const void *p_element) {
2521 const MonoClass *key = p_key;
2522 const MonoClass *element = *(MonoClass**) p_element;
2523
2524 return (key->interface_id - element->interface_id);
2525 }
2526
2527 /*FIXME verify all callers if they should switch to mono_class_interface_offset_with_variance*/
2528 int
2529 mono_class_interface_offset (MonoClass *klass, MonoClass *itf) {
2530 MonoClass **result = bsearch (
2531 itf,
2532 klass->interfaces_packed,
2533 klass->interface_offsets_count,
2534 sizeof (MonoClass *),
2535 compare_interface_ids);
2536 if (result) {
2537 return klass->interface_offsets_packed [result - (klass->interfaces_packed)];
2538 } else {
2539 return -1;
2540 }
2541 }
2542
2543 /*
2544 * mono_class_interface_offset_with_variance:
2545 *
2546 * Return the interface offset of @itf in @klass. Sets @non_exact_match to TRUE if the match required variance check
2547 * If @itf is an interface with generic variant arguments, try to find the compatible one.
2548 *
2549 * Note that this function is responsible for resolving ambiguities. Right now we use whatever ordering interfaces_packed gives us.
2550 *
2551 * FIXME figure out MS disambiguation rules and fix this function.
2552 */
2553 int
2554 mono_class_interface_offset_with_variance (MonoClass *klass, MonoClass *itf, gboolean *non_exact_match) {
2555 int i = mono_class_interface_offset (klass, itf);
2556 *non_exact_match = FALSE;
2557 if (i >= 0)
2558 return i;
2559
2560 if (!mono_class_has_variant_generic_params (itf))
2561 return -1;
2562
2563 for (i = 0; i < klass->interface_offsets_count; i++) {
2564 if (mono_class_is_variant_compatible (itf, klass->interfaces_packed [i], FALSE)) {
2565 *non_exact_match = TRUE;
2566 return klass->interface_offsets_packed [i];
2567 }
2568 }
2569
2570 return -1;
2571 }
2572
2573 static void
2574 print_implemented_interfaces (MonoClass *klass) {
2575 char *name;
2576 MonoError error;
2577 GPtrArray *ifaces = NULL;
2578 int i;
2579 int ancestor_level = 0;
2580
2581 name = mono_type_get_full_name (klass);
2582 printf ("Packed interface table for class %s has size %d\n", name, klass->interface_offsets_count);
2583 g_free (name);
2584
2585 for (i = 0; i < klass->interface_offsets_count; i++)
2586 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2587 klass->interfaces_packed [i]->interface_id,
2588 klass->interface_offsets_packed [i],
2589 klass->interfaces_packed [i]->method.count,
2590 klass->interfaces_packed [i]->name_space,
2591 klass->interfaces_packed [i]->name );
2592 printf ("Interface flags: ");
2593 for (i = 0; i <= klass->max_interface_id; i++)
2594 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
2595 printf ("(%d,T)", i);
2596 else
2597 printf ("(%d,F)", i);
2598 printf ("\n");
2599 printf ("Dump interface flags:");
2600 #ifdef COMPRESSED_INTERFACE_BITMAP
2601 {
2602 const uint8_t* p = klass->interface_bitmap;
2603 i = klass->max_interface_id;
2604 while (i > 0) {
2605 printf (" %d x 00 %02X", p [0], p [1]);
2606 i -= p [0] * 8;
2607 i -= 8;
2608 }
2609 }
2610 #else
2611 for (i = 0; i < ((((klass->max_interface_id + 1) >> 3)) + (((klass->max_interface_id + 1) & 7)? 1 :0)); i++)
2612 printf (" %02X", klass->interface_bitmap [i]);
2613 #endif
2614 printf ("\n");
2615 while (klass != NULL) {
2616 printf ("[LEVEL %d] Implemented interfaces by class %s:\n", ancestor_level, klass->name);
2617 ifaces = mono_class_get_implemented_interfaces (klass, &error);
2618 if (!mono_error_ok (&error)) {
2619 printf (" Type failed due to %s\n", mono_error_get_message (&error));
2620 mono_error_cleanup (&error);
2621 } else if (ifaces) {
2622 for (i = 0; i < ifaces->len; i++) {
2623 MonoClass *ic = g_ptr_array_index (ifaces, i);
2624 printf (" [UIID %d] interface %s\n", ic->interface_id, ic->name);
2625 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2626 ic->interface_id,
2627 mono_class_interface_offset (klass, ic),
2628 ic->method.count,
2629 ic->name_space,
2630 ic->name );
2631 }
2632 g_ptr_array_free (ifaces, TRUE);
2633 }
2634 ancestor_level ++;
2635 klass = klass->parent;
2636 }
2637 }
2638
2639 static MonoClass*
2640 inflate_class_one_arg (MonoClass *gtype, MonoClass *arg0)
2641 {
2642 MonoType *args [1];
2643 args [0] = &arg0->byval_arg;
2644
2645 return mono_class_bind_generic_parameters (gtype, 1, args, FALSE);
2646 }
2647
2648 static MonoClass*
2649 array_class_get_if_rank (MonoClass *class, guint rank)
2650 {
2651 return rank ? mono_array_class_get (class, rank) : class;
2652 }
2653
2654 static void
2655 fill_valuetype_array_derived_types (MonoClass **valuetype_types, MonoClass *eclass, int rank)
2656 {
2657 valuetype_types [0] = eclass;
2658 if (eclass == mono_defaults.int16_class)
2659 valuetype_types [1] = mono_defaults.uint16_class;
2660 else if (eclass == mono_defaults.uint16_class)
2661 valuetype_types [1] = mono_defaults.int16_class;
2662 else if (eclass == mono_defaults.int32_class)
2663 valuetype_types [1] = mono_defaults.uint32_class;
2664 else if (eclass == mono_defaults.uint32_class)
2665 valuetype_types [1] = mono_defaults.int32_class;
2666 else if (eclass == mono_defaults.int64_class)
2667 valuetype_types [1] = mono_defaults.uint64_class;
2668 else if (eclass == mono_defaults.uint64_class)
2669 valuetype_types [1] = mono_defaults.int64_class;
2670 else if (eclass == mono_defaults.byte_class)
2671 valuetype_types [1] = mono_defaults.sbyte_class;
2672 else if (eclass == mono_defaults.sbyte_class)
2673 valuetype_types [1] = mono_defaults.byte_class;
2674 else if (eclass->enumtype && mono_class_enum_basetype (eclass))
2675 valuetype_types [1] = mono_class_from_mono_type (mono_class_enum_basetype (eclass));
2676 }
2677
2678 /* this won't be needed once bug #325495 is completely fixed
2679 * though we'll need something similar to know which interfaces to allow
2680 * in arrays when they'll be lazyly created
2681 *
2682 * FIXME: System.Array/InternalEnumerator don't need all this interface fabrication machinery.
2683 * MS returns diferrent types based on which instance is called. For example:
2684 * object obj = new byte[10][];
2685 * Type a = ((IEnumerable<byte[]>)obj).GetEnumerator ().GetType ();
2686 * Type b = ((IEnumerable<IList<byte>>)obj).GetEnumerator ().GetType ();
2687 * a != b ==> true
2688 *
2689 * Fixing this should kill quite some code, save some bits and improve compatibility.
2690 */
2691 static MonoClass**
2692 get_implicit_generic_array_interfaces (MonoClass *class, int *num, int *is_enumerator)
2693 {
2694 MonoClass *eclass = class->element_class;
2695 static MonoClass* generic_icollection_class = NULL;
2696 static MonoClass* generic_ienumerable_class = NULL;
2697 static MonoClass* generic_ienumerator_class = NULL;
2698 MonoClass *valuetype_types[2] = { NULL, NULL };
2699 MonoClass **interfaces = NULL;
2700 int i, interface_count, real_count, original_rank;
2701 int all_interfaces;
2702 gboolean internal_enumerator;
2703 gboolean eclass_is_valuetype;
2704
2705 if (!mono_defaults.generic_ilist_class) {
2706 *num = 0;
2707 return NULL;
2708 }
2709 internal_enumerator = FALSE;
2710 eclass_is_valuetype = FALSE;
2711 original_rank = eclass->rank;
2712 if (class->byval_arg.type != MONO_TYPE_SZARRAY) {
2713 if (class->generic_class && class->nested_in == mono_defaults.array_class && strcmp (class->name, "InternalEnumerator`1") == 0) {
2714 /*
2715 * For a Enumerator<T[]> we need to get the list of interfaces for T.
2716 */
2717 eclass = mono_class_from_mono_type (class->generic_class->context.class_inst->type_argv [0]);
2718 original_rank = eclass->rank;
2719 eclass = eclass->element_class;
2720 internal_enumerator = TRUE;
2721 *is_enumerator = TRUE;
2722 } else {
2723 *num = 0;
2724 return NULL;
2725 }
2726 }
2727
2728 /*
2729 * with this non-lazy impl we can't implement all the interfaces so we do just the minimal stuff
2730 * for deep levels of arrays of arrays (string[][] has all the interfaces, string[][][] doesn't)
2731 */
2732 all_interfaces = eclass->rank && eclass->element_class->rank? FALSE: TRUE;
2733
2734 if (!generic_icollection_class) {
2735 generic_icollection_class = mono_class_from_name (mono_defaults.corlib,
2736 "System.Collections.Generic", "ICollection`1");
2737 generic_ienumerable_class = mono_class_from_name (mono_defaults.corlib,
2738 "System.Collections.Generic", "IEnumerable`1");
2739 generic_ienumerator_class = mono_class_from_name (mono_defaults.corlib,
2740 "System.Collections.Generic", "IEnumerator`1");
2741 }
2742
2743 mono_class_init (eclass);
2744
2745 /*
2746 * Arrays in 2.0 need to implement a number of generic interfaces
2747 * (IList`1, ICollection`1, IEnumerable`1 for a number of types depending
2748 * on the element class). We collect the types needed to build the
2749 * instantiations in interfaces at intervals of 3, because 3 are
2750 * the generic interfaces needed to implement.
2751 */
2752 if (eclass->valuetype) {
2753 fill_valuetype_array_derived_types (valuetype_types, eclass, original_rank);
2754
2755 /* IList, ICollection, IEnumerable */
2756 real_count = interface_count = valuetype_types [1] ? 6 : 3;
2757 if (internal_enumerator) {
2758 ++real_count;
2759 if (valuetype_types [1])
2760 ++real_count;
2761 }
2762
2763 interfaces = g_malloc0 (sizeof (MonoClass*) * real_count);
2764 interfaces [0] = valuetype_types [0];
2765 if (valuetype_types [1])
2766 interfaces [3] = valuetype_types [1];
2767
2768 eclass_is_valuetype = TRUE;
2769 } else {
2770 int j;
2771 int idepth = eclass->idepth;
2772 if (!internal_enumerator)
2773 idepth--;
2774
2775 // FIXME: This doesn't seem to work/required for generic params
2776 if (!(eclass->this_arg.type == MONO_TYPE_VAR || eclass->this_arg.type == MONO_TYPE_MVAR || (eclass->image->dynamic && !eclass->wastypebuilder)))
2777 mono_class_setup_interface_offsets (eclass);
2778
2779 interface_count = all_interfaces? eclass->interface_offsets_count: eclass->interface_count;
2780 /* we add object for interfaces and the supertypes for the other
2781 * types. The last of the supertypes is the element class itself which we
2782 * already created the explicit interfaces for (so we include it for IEnumerator
2783 * and exclude it for arrays).
2784 */
2785 if (MONO_CLASS_IS_INTERFACE (eclass))
2786 interface_count++;
2787 else
2788 interface_count += idepth;
2789 if (eclass->rank && eclass->element_class->valuetype) {
2790 fill_valuetype_array_derived_types (valuetype_types, eclass->element_class, original_rank);
2791 if (valuetype_types [1])
2792 ++interface_count;
2793 }
2794 /* IList, ICollection, IEnumerable */
2795 interface_count *= 3;
2796 real_count = interface_count;
2797 if (internal_enumerator) {
2798 real_count += (MONO_CLASS_IS_INTERFACE (eclass) ? 1 : idepth) + eclass->interface_offsets_count;
2799 if (valuetype_types [1])
2800 ++real_count;
2801 }
2802 interfaces = g_malloc0 (sizeof (MonoClass*) * real_count);
2803 if (MONO_CLASS_IS_INTERFACE (eclass)) {
2804 interfaces [0] = mono_defaults.object_class;
2805 j = 3;
2806 } else {
2807 j = 0;
2808 for (i = 0; i < idepth; i++) {
2809 mono_class_init (eclass->supertypes [i]);
2810 interfaces [j] = eclass->supertypes [i];
2811 j += 3;
2812 }
2813 }
2814 if (all_interfaces) {
2815 for (i = 0; i < eclass->interface_offsets_count; i++) {
2816 interfaces [j] = eclass->interfaces_packed [i];
2817 j += 3;
2818 }
2819 } else {
2820 for (i = 0; i < eclass->interface_count; i++) {
2821 interfaces [j] = eclass->interfaces [i];
2822 j += 3;
2823 }
2824 }
2825 if (valuetype_types [1]) {
2826 interfaces [j] = array_class_get_if_rank (valuetype_types [1], original_rank);
2827 j += 3;
2828 }
2829 }
2830
2831 /* instantiate the generic interfaces */
2832 for (i = 0; i < interface_count; i += 3) {
2833 MonoClass *iface = interfaces [i];
2834
2835 interfaces [i + 0] = inflate_class_one_arg (mono_defaults.generic_ilist_class, iface);
2836 interfaces [i + 1] = inflate_class_one_arg (generic_icollection_class, iface);
2837 interfaces [i + 2] = inflate_class_one_arg (generic_ienumerable_class, iface);
2838 }
2839 if (internal_enumerator) {
2840 int j;
2841 /* instantiate IEnumerator<iface> */
2842 for (i = 0; i < interface_count; i++) {
2843 interfaces [i] = inflate_class_one_arg (generic_ienumerator_class, interfaces [i]);
2844 }
2845 j = interface_count;
2846 if (!eclass_is_valuetype) {
2847 if (MONO_CLASS_IS_INTERFACE (eclass)) {
2848 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, mono_defaults.object_class);
2849 j ++;
2850 } else {
2851 for (i = 0; i < eclass->idepth; i++) {
2852 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->supertypes [i]);
2853 j ++;
2854 }
2855 }
2856 for (i = 0; i < eclass->interface_offsets_count; i++) {
2857 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->interfaces_packed [i]);
2858 j ++;
2859 }
2860 } else {
2861 interfaces [j++] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [0], original_rank));
2862 }
2863 if (valuetype_types [1])
2864 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [1], original_rank));
2865 }
2866 #if 0
2867 {
2868 char *type_name = mono_type_get_name_full (&class->byval_arg, 0);
2869 for (i = 0; i < real_count; ++i) {
2870 char *name = mono_type_get_name_full (&interfaces [i]->byval_arg, 0);
2871 g_print ("%s implements %s\n", type_name, name);
2872 g_free (name);
2873 }
2874 g_free (type_name);
2875 }
2876 #endif
2877 *num = real_count;
2878 return interfaces;
2879 }
2880
2881 static int
2882 find_array_interface (MonoClass *klass, const char *name)
2883 {
2884 int i;
2885 for (i = 0; i < klass->interface_count; ++i) {
2886 if (strcmp (klass->interfaces [i]->name, name) == 0)
2887 return i;
2888 }
2889 return -1;
2890 }
2891
2892 /*
2893 * Return the number of virtual methods.
2894 * Even for interfaces we can't simply return the number of methods as all CLR types are allowed to have static methods.
2895 * Return -1 on failure.
2896 * FIXME It would be nice if this information could be cached somewhere.
2897 */
2898 static int
2899 count_virtual_methods (MonoClass *class)
2900 {
2901 int i, count = 0;
2902 guint32 flags;
2903 class = mono_class_get_generic_type_definition (class); /*We can find this information by looking at the GTD*/
2904
2905 if (class->methods || !MONO_CLASS_HAS_STATIC_METADATA (class)) {
2906 mono_class_setup_methods (class);
2907 if (class->exception_type)
2908 return -1;
2909
2910 for (i = 0; i < class->method.count; ++i) {
2911 flags = class->methods [i]->flags;
2912 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
2913 ++count;
2914 }
2915 } else {
2916 for (i = 0; i < class->method.count; ++i) {
2917 flags = mono_metadata_decode_table_row_col (class->image, MONO_TABLE_METHOD, class->method.first + i, MONO_METHOD_FLAGS);
2918
2919 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
2920 ++count;
2921 }
2922 }
2923 return count;
2924 }
2925
2926 static int
2927 find_interface (int num_ifaces, MonoClass **interfaces_full, MonoClass *ic)
2928 {
2929 int m, l = 0;
2930 if (!num_ifaces)
2931 return -1;
2932 while (1) {
2933 if (l > num_ifaces)
2934 return -1;
2935 m = (l + num_ifaces) / 2;
2936 if (interfaces_full [m] == ic)
2937 return m;
2938 if (l == num_ifaces)
2939 return -1;
2940 if (!interfaces_full [m] || interfaces_full [m]->interface_id > ic->interface_id) {
2941 num_ifaces = m - 1;
2942 } else {
2943 l = m + 1;
2944 }
2945 }
2946 }
2947
2948 static int
2949 find_interface_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic)
2950 {
2951 int i = find_interface (num_ifaces, interfaces_full, ic);
2952 if (ic >= 0)
2953 return interface_offsets_full [i];
2954 return -1;
2955 }
2956
2957 static mono_bool
2958 set_interface_and_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic, int offset, mono_bool force_set)
2959 {
2960 int i = find_interface (num_ifaces, interfaces_full, ic);
2961 if (i >= 0) {
2962 if (!force_set)
2963 return TRUE;
2964 interface_offsets_full [i] = offset;
2965 return FALSE;
2966 }
2967 for (i = 0; i < num_ifaces; ++i) {
2968 if (interfaces_full [i]) {
2969 int end;
2970 if (interfaces_full [i]->interface_id < ic->interface_id)
2971 continue;
2972 end = i + 1;
2973 while (end < num_ifaces && interfaces_full [end]) end++;
2974 memmove (interfaces_full + i + 1, interfaces_full + i, sizeof (MonoClass*) * (end - i));
2975 memmove (interface_offsets_full + i + 1, interface_offsets_full + i, sizeof (int) * (end - i));
2976 }
2977 interfaces_full [i] = ic;
2978 interface_offsets_full [i] = offset;
2979 break;
2980 }
2981 return FALSE;
2982 }
2983
2984 #ifdef COMPRESSED_INTERFACE_BITMAP
2985
2986 /*
2987 * Compressed interface bitmap design.
2988 *
2989 * Interface bitmaps take a large amount of memory, because their size is
2990 * linear with the maximum interface id assigned in the process (each interface
2991 * is assigned a unique id as it is loaded). The number of interface classes
2992 * is high because of the many implicit interfaces implemented by arrays (we'll
2993 * need to lazy-load them in the future).
2994 * Most classes implement a very small number of interfaces, so the bitmap is
2995 * sparse. This bitmap needs to be checked by interface casts, so access to the
2996 * needed bit must be fast and doable with few jit instructions.
2997 *
2998 * The current compression format is as follows:
2999 * *) it is a sequence of one or more two-byte elements
3000 * *) the first byte in the element is the count of empty bitmap bytes
3001 * at the current bitmap position
3002 * *) the second byte in the element is an actual bitmap byte at the current
3003 * bitmap position
3004 *
3005 * As an example, the following compressed bitmap bytes:
3006 * 0x07 0x01 0x00 0x7
3007 * correspond to the following bitmap:
3008 * 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x07
3009 *
3010 * Each two-byte element can represent up to 2048 bitmap bits, but as few as a single
3011 * bitmap byte for non-sparse sequences. In practice the interface bitmaps created
3012 * during a gmcs bootstrap are reduced to less tha 5% of the original size.
3013 */
3014
3015 /**
3016 * mono_compress_bitmap:
3017 * @dest: destination buffer
3018 * @bitmap: bitmap buffer
3019 * @size: size of @bitmap in bytes
3020 *
3021 * This is a mono internal function.
3022 * The @bitmap data is compressed into a format that is small but
3023 * still searchable in few instructions by the JIT and runtime.
3024 * The compressed data is stored in the buffer pointed to by the
3025 * @dest array. Passing a #NULL value for @dest allows to just compute
3026 * the size of the buffer.
3027 * This compression algorithm assumes the bits set in the bitmap are
3028 * few and far between, like in interface bitmaps.
3029 * Returns: the size of the compressed bitmap in bytes.
3030 */
3031 int
3032 mono_compress_bitmap (uint8_t *dest, const uint8_t *bitmap, int size)
3033 {
3034 int numz = 0;
3035 int res = 0;
3036 const uint8_t *end = bitmap + size;
3037 while (bitmap < end) {
3038 if (*bitmap || numz == 255) {
3039 if (dest) {
3040 *dest++ = numz;
3041 *dest++ = *bitmap;
3042 }
3043 res += 2;
3044 numz = 0;
3045 bitmap++;
3046 continue;
3047 }
3048 bitmap++;
3049 numz++;
3050 }
3051 if (numz) {
3052 res += 2;
3053 if (dest) {
3054 *dest++ = numz;
3055 *dest++ = 0;
3056 }
3057 }
3058 return res;
3059 }
3060
3061 /**
3062 * mono_class_interface_match:
3063 * @bitmap: a compressed bitmap buffer
3064 * @id: the index to check in the bitmap
3065 *
3066 * This is a mono internal function.
3067 * Checks if a bit is set in a compressed interface bitmap. @id must
3068 * be already checked for being smaller than the maximum id encoded in the
3069 * bitmap.
3070 *
3071 * Returns: a non-zero value if bit @id is set in the bitmap @bitmap,
3072 * #FALSE otherwise.
3073 */
3074 int
3075 mono_class_interface_match (const uint8_t *bitmap, int id)
3076 {
3077 while (TRUE) {
3078 id -= bitmap [0] * 8;
3079 if (id < 8) {
3080 if (id < 0)
3081 return 0;
3082 return bitmap [1] & (1 << id);
3083 }
3084 bitmap += 2;
3085 id -= 8;
3086 }
3087 }
3088 #endif
3089
3090 /*
3091 * LOCKING: this is supposed to be called with the loader lock held.
3092 * Return -1 on failure and set exception_type
3093 */
3094 static int
3095 setup_interface_offsets (MonoClass *class, int cur_slot)
3096 {
3097 MonoError error;
3098 MonoClass *k, *ic;
3099 int i, j, max_iid, num_ifaces;
3100 MonoClass **interfaces_full = NULL;
3101 int *interface_offsets_full = NULL;
3102 GPtrArray *ifaces;
3103 GPtrArray **ifaces_array = NULL;
3104 int interface_offsets_count;
3105 MonoClass **array_interfaces = NULL;
3106 int num_array_interfaces;
3107 int is_enumerator = FALSE;
3108
3109 mono_class_setup_supertypes (class);
3110 /*
3111 * get the implicit generic interfaces for either the arrays or for System.Array/InternalEnumerator<T>
3112 * implicit interfaces have the property that they are assigned the same slot in the
3113 * vtables for compatible interfaces
3114 */
3115 array_interfaces = get_implicit_generic_array_interfaces (class, &num_array_interfaces, &is_enumerator);
3116
3117 /* compute maximum number of slots and maximum interface id */
3118 max_iid = 0;
3119 num_ifaces = num_array_interfaces; /* this can include duplicated ones */
3120 ifaces_array = g_new0 (GPtrArray *, class->idepth);
3121 for (j = 0; j < class->idepth; j++) {
3122 k = class->supertypes [j];
3123 num_ifaces += k->interface_count;
3124 for (i = 0; i < k->interface_count; i++) {
3125 ic = k->interfaces [i];
3126
3127 if (!ic->inited)
3128 mono_class_init (ic);
3129
3130 if (max_iid < ic->interface_id)
3131 max_iid = ic->interface_id;
3132 }
3133 ifaces = mono_class_get_implemented_interfaces (k, &error);
3134 if (!mono_error_ok (&error)) {
3135 char *name = mono_type_get_full_name (k);
3136 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Error getting the interfaces of %s due to %s", name, mono_error_get_message (&error)));
3137 g_free (name);
3138 mono_error_cleanup (&error);
3139 cur_slot = -1;
3140 goto end;
3141 }
3142 if (ifaces) {
3143 num_ifaces += ifaces->len;
3144 for (i = 0; i < ifaces->len; ++i) {
3145 ic = g_ptr_array_index (ifaces, i);
3146 if (max_iid < ic->interface_id)
3147 max_iid = ic->interface_id;
3148 }
3149 ifaces_array [j] = ifaces;
3150 }
3151 }
3152
3153 for (i = 0; i < num_array_interfaces; ++i) {
3154 ic = array_interfaces [i];
3155 mono_class_init (ic);
3156 if (max_iid < ic->interface_id)
3157 max_iid = ic->interface_id;
3158 }
3159
3160 if (MONO_CLASS_IS_INTERFACE (class)) {
3161 num_ifaces++;
3162 if (max_iid < class->interface_id)
3163 max_iid = class->interface_id;
3164 }
3165 class->max_interface_id = max_iid;
3166 /* compute vtable offset for interfaces */
3167 interfaces_full = g_malloc0 (sizeof (MonoClass*) * num_ifaces);
3168 interface_offsets_full = g_malloc (sizeof (int) * num_ifaces);
3169
3170 for (i = 0; i < num_ifaces; i++) {
3171 interface_offsets_full [i] = -1;
3172 }
3173
3174 /* skip the current class */
3175 for (j = 0; j < class->idepth - 1; j++) {
3176 k = class->supertypes [j];
3177 ifaces = ifaces_array [j];
3178
3179 if (ifaces) {
3180 for (i = 0; i < ifaces->len; ++i) {
3181 int io;
3182 ic = g_ptr_array_index (ifaces, i);
3183
3184 /*Force the sharing of interface offsets between parent and subtypes.*/
3185 io = mono_class_interface_offset (k, ic);
3186 g_assert (io >= 0);
3187 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, io, TRUE);
3188 }
3189 }
3190 }
3191
3192 g_assert (class == class->supertypes [class->idepth - 1]);
3193 ifaces = ifaces_array [class->idepth - 1];
3194 if (ifaces) {
3195 for (i = 0; i < ifaces->len; ++i) {
3196 int count;
3197 ic = g_ptr_array_index (ifaces, i);
3198 if (set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, cur_slot, FALSE))
3199 continue;
3200 count = count_virtual_methods (ic);
3201 if (count == -1) {
3202 char *name = mono_type_get_full_name (ic);
3203 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Error calculating interface offset of %s", name));
3204 g_free (name);
3205 cur_slot = -1;
3206 goto end;
3207 }
3208 cur_slot += count;
3209 }
3210 }
3211
3212 if (MONO_CLASS_IS_INTERFACE (class))
3213 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, class, cur_slot, TRUE);
3214
3215 if (num_array_interfaces) {
3216 if (is_enumerator) {
3217 int ienumerator_idx = find_array_interface (class, "IEnumerator`1");
3218 int ienumerator_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, class->interfaces [ienumerator_idx]);
3219 g_assert (ienumerator_offset >= 0);
3220 for (i = 0; i < num_array_interfaces; ++i) {
3221 ic = array_interfaces [i];
3222 if (strcmp (ic->name, "IEnumerator`1") == 0)
3223 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, ienumerator_offset, TRUE);
3224 else
3225 g_assert_not_reached ();
3226 /*g_print ("type %s has %s offset at %d (%s)\n", class->name, ic->name, interface_offsets_full [ic->interface_id], class->interfaces [0]->name);*/
3227 }
3228 } else {
3229 int ilist_offset, icollection_offset, ienumerable_offset;
3230 int ilist_iface_idx = find_array_interface (class, "IList`1");
3231 MonoClass* ilist_class = class->interfaces [ilist_iface_idx];
3232 int icollection_iface_idx = find_array_interface (ilist_class, "ICollection`1");
3233 int ienumerable_iface_idx = find_array_interface (ilist_class, "IEnumerable`1");
3234 ilist_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, class->interfaces [ilist_iface_idx]);
3235 icollection_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [icollection_iface_idx]);
3236 ienumerable_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [ienumerable_iface_idx]);
3237 g_assert (ilist_offset >= 0 && icollection_offset >= 0 && ienumerable_offset >= 0);
3238 for (i = 0; i < num_array_interfaces; ++i) {
3239 int offset;
3240 ic = array_interfaces [i];
3241 if (ic->generic_class->container_class == mono_defaults.generic_ilist_class)
3242 offset = ilist_offset;
3243 else if (strcmp (ic->name, "ICollection`1") == 0)
3244 offset = icollection_offset;
3245 else if (strcmp (ic->name, "IEnumerable`1") == 0)
3246 offset = ienumerable_offset;
3247 else
3248 g_assert_not_reached ();
3249 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, offset, TRUE);
3250 /*g_print ("type %s has %s offset at %d (%s)\n", class->name, ic->name, offset, class->interfaces [0]->name);*/
3251 }
3252 }
3253 }
3254
3255 for (interface_offsets_count = 0, i = 0; i < num_ifaces; i++) {
3256 if (interface_offsets_full [i] != -1) {
3257 interface_offsets_count ++;
3258 }
3259 }
3260
3261 /*
3262 * We might get called twice: once from mono_class_init () then once from
3263 * mono_class_setup_vtable ().
3264 */
3265 if (class->interfaces_packed) {
3266 g_assert (class->interface_offsets_count == interface_offsets_count);
3267 } else {
3268 uint8_t *bitmap;
3269 int bsize;
3270 class->interface_offsets_count = interface_offsets_count;
3271 class->interfaces_packed = mono_class_alloc (class, sizeof (MonoClass*) * interface_offsets_count);
3272 class->interface_offsets_packed = mono_class_alloc (class, sizeof (guint16) * interface_offsets_count);
3273 bsize = (sizeof (guint8) * ((max_iid + 1) >> 3)) + (((max_iid + 1) & 7)? 1 :0);
3274 #ifdef COMPRESSED_INTERFACE_BITMAP
3275 bitmap = g_malloc0 (bsize);
3276 #else
3277 bitmap = mono_class_alloc0 (class, bsize);
3278 #endif
3279 for (i = 0; i < interface_offsets_count; i++) {
3280 int id = interfaces_full [i]->interface_id;
3281 bitmap [id >> 3] |= (1 << (id & 7));
3282 class->interfaces_packed [i] = interfaces_full [i];
3283 class->interface_offsets_packed [i] = interface_offsets_full [i];
3284 /*if (num_array_interfaces)
3285 g_print ("type %s has %s offset at %d\n", mono_type_get_name_full (&class->byval_arg, 0), mono_type_get_name_full (&interfaces_full [i]->byval_arg, 0), interface_offsets_full [i]);*/
3286 }
3287 #ifdef COMPRESSED_INTERFACE_BITMAP
3288 i = mono_compress_bitmap (NULL, bitmap, bsize);
3289 class->interface_bitmap = mono_class_alloc0 (class, i);
3290 mono_compress_bitmap (class->interface_bitmap, bitmap, bsize);
3291 g_free (bitmap);
3292 #else
3293 class->interface_bitmap = bitmap;
3294 #endif
3295 }
3296
3297 end:
3298 g_free (interfaces_full);
3299 g_free (interface_offsets_full);
3300 g_free (array_interfaces);
3301 for (i = 0; i < class->idepth; i++) {
3302 ifaces = ifaces_array [i];
3303 if (ifaces)
3304 g_ptr_array_free (ifaces, TRUE);
3305 }
3306 g_free (ifaces_array);
3307
3308 //printf ("JUST DONE: ");
3309 //print_implemented_interfaces (class);
3310
3311 return cur_slot;
3312 }
3313
3314 /*
3315 * Setup interface offsets for interfaces.
3316 * Initializes:
3317 * - class->max_interface_id
3318 * - class->interface_offsets_count
3319 * - class->interfaces_packed
3320 * - class->interface_offsets_packed
3321 * - class->interface_bitmap
3322 *
3323 * This function can fail @class.
3324 */
3325 void
3326 mono_class_setup_interface_offsets (MonoClass *class)
3327 {
3328 mono_loader_lock ();
3329
3330 setup_interface_offsets (class, 0);
3331
3332 mono_loader_unlock ();
3333 }
3334
3335 /*Checks if @klass has @parent as one of it's parents type gtd
3336 *
3337 * For example:
3338 * Foo<T>
3339 * Bar<T> : Foo<Bar<Bar<T>>>
3340 *
3341 */
3342 static gboolean
3343 mono_class_has_gtd_parent (MonoClass *klass, MonoClass *parent)
3344 {
3345 klass = mono_class_get_generic_type_definition (klass);
3346 parent = mono_class_get_generic_type_definition (parent);
3347 mono_class_setup_supertypes (klass);
3348 mono_class_setup_supertypes (parent);
3349
3350 return klass->idepth >= parent->idepth &&
3351 mono_class_get_generic_type_definition (klass->supertypes [parent->idepth - 1]) == parent;
3352 }
3353
3354 gboolean
3355 mono_class_check_vtable_constraints (MonoClass *class, GList *in_setup)
3356 {
3357 MonoGenericInst *ginst;
3358 int i;
3359 if (!class->generic_class) {
3360 mono_class_setup_vtable_full (class, in_setup);
3361 return class->exception_type == 0;
3362 }
3363
3364 mono_class_setup_vtable_full (mono_class_get_generic_type_definition (class), in_setup);
3365 if (class->generic_class->container_class->exception_type) {
3366 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Failed to load generic definition vtable"));
3367 return FALSE;
3368 }
3369
3370 ginst = class->generic_class->context.class_inst;
3371 for (i = 0; i < ginst->type_argc; ++i) {
3372 MonoClass *arg;
3373 if (ginst->type_argv [i]->type != MONO_TYPE_GENERICINST)
3374 continue;
3375 arg = mono_class_from_mono_type (ginst->type_argv [i]);
3376 /*Those 2 will be checked by mono_class_setup_vtable itself*/
3377 if (mono_class_has_gtd_parent (class, arg) || mono_class_has_gtd_parent (arg, class))
3378 continue;
3379 if (!mono_class_check_vtable_constraints (arg, in_setup)) {
3380 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Failed to load generic parameter %d", i));
3381 return FALSE;
3382 }
3383 }
3384 return TRUE;
3385 }
3386
3387 /*
3388 * mono_class_setup_vtable:
3389 *
3390 * Creates the generic vtable of CLASS.
3391 * Initializes the following fields in MonoClass:
3392 * - vtable
3393 * - vtable_size
3394 * Plus all the fields initialized by setup_interface_offsets ().
3395 * If there is an error during vtable construction, class->exception_type is set.
3396 *
3397 * LOCKING: Acquires the loader lock.
3398 */
3399 void
3400 mono_class_setup_vtable (MonoClass *class)
3401 {
3402 mono_class_setup_vtable_full (class, NULL);
3403 }
3404
3405 static void
3406 mono_class_setup_vtable_full (MonoClass *class, GList *in_setup)
3407 {
3408 MonoMethod **overrides;
3409 MonoGenericContext *context;
3410 guint32 type_token;
3411 int onum = 0;
3412 gboolean ok = TRUE;
3413
3414 if (class->vtable)
3415 return;
3416
3417 if (mono_debug_using_mono_debugger ())
3418 /* The debugger currently depends on this */
3419 mono_class_setup_methods (class);
3420
3421 if (MONO_CLASS_IS_INTERFACE (class)) {
3422 /* This sets method->slot for all methods if this is an interface */
3423 mono_class_setup_methods (class);
3424 return;
3425 }
3426
3427 if (class->exception_type)
3428 return;
3429
3430 if (g_list_find (in_setup, class))
3431 return;
3432
3433 mono_loader_lock ();
3434
3435 if (class->vtable) {
3436 mono_loader_unlock ();
3437 return;
3438 }
3439
3440 mono_stats.generic_vtable_count ++;
3441 in_setup = g_list_prepend (in_setup, class);
3442
3443 if (class->generic_class) {
3444 if (!mono_class_check_vtable_constraints (class, in_setup)) {
3445 mono_loader_unlock ();
3446 g_list_remove (in_setup, class);
3447 return;
3448 }
3449
3450 context = mono_class_get_context (class);
3451 type_token = class->generic_class->container_class->type_token;
3452 } else {
3453 context = (MonoGenericContext *) class->generic_container;
3454 type_token = class->type_token;
3455 }
3456
3457 if (class->image->dynamic) {
3458 /* Generic instances can have zero method overrides without causing any harm.
3459 * This is true since we don't do layout all over again for them, we simply inflate
3460 * the layout of the parent.
3461 */
3462 mono_reflection_get_dynamic_overrides (class, &overrides, &onum);
3463 } else {
3464 /* The following call fails if there are missing methods in the type */
3465 /* FIXME it's probably a good idea to avoid this for generic instances. */
3466 ok = mono_class_get_overrides_full (class->image, type_token, &overrides, &onum, context);
3467 }
3468
3469 if (ok)
3470 mono_class_setup_vtable_general (class, overrides, onum, in_setup);
3471 else
3472 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not load list of method overrides"));
3473
3474 g_free (overrides);
3475
3476 mono_loader_unlock ();
3477 g_list_remove (in_setup, class);
3478
3479 return;
3480 }
3481
3482 #define DEBUG_INTERFACE_VTABLE_CODE 0
3483 #define TRACE_INTERFACE_VTABLE_CODE 0
3484 #define VERIFY_INTERFACE_VTABLE_CODE 0
3485 #define VTABLE_SELECTOR (1)
3486
3487 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3488 #define DEBUG_INTERFACE_VTABLE(stmt) do {\
3489 if (!(VTABLE_SELECTOR)) break; \
3490 stmt;\
3491 } while (0)
3492 #else
3493 #define DEBUG_INTERFACE_VTABLE(stmt)
3494 #endif
3495
3496 #if TRACE_INTERFACE_VTABLE_CODE
3497 #define TRACE_INTERFACE_VTABLE(stmt) do {\
3498 if (!(VTABLE_SELECTOR)) break; \
3499 stmt;\
3500 } while (0)
3501 #else
3502 #define TRACE_INTERFACE_VTABLE(stmt)
3503 #endif
3504
3505 #if VERIFY_INTERFACE_VTABLE_CODE
3506 #define VERIFY_INTERFACE_VTABLE(stmt) do {\
3507 if (!(VTABLE_SELECTOR)) break; \
3508 stmt;\
3509 } while (0)
3510 #else
3511 #define VERIFY_INTERFACE_VTABLE(stmt)
3512 #endif
3513
3514
3515 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3516 static char*
3517 mono_signature_get_full_desc (MonoMethodSignature *sig, gboolean include_namespace)
3518 {
3519 int i;
3520 char *result;
3521 GString *res = g_string_new ("");
3522
3523 g_string_append_c (res, '(');
3524 for (i = 0; i < sig->param_count; ++i) {
3525 if (i > 0)
3526 g_string_append_c (res, ',');
3527 mono_type_get_desc (res, sig->params [i], include_namespace);
3528 }
3529 g_string_append (res, ")=>");
3530 if (sig->ret != NULL) {
3531 mono_type_get_desc (res, sig->ret, include_namespace);
3532 } else {
3533 g_string_append (res, "NULL");
3534 }
3535 result = res->str;
3536 g_string_free (res, FALSE);
3537 return result;
3538 }
3539 static void
3540 print_method_signatures (MonoMethod *im, MonoMethod *cm) {
3541 char *im_sig = mono_signature_get_full_desc (mono_method_signature (im), TRUE);
3542 char *cm_sig = mono_signature_get_full_desc (mono_method_signature (cm), TRUE);
3543 printf ("(IM \"%s\", CM \"%s\")", im_sig, cm_sig);
3544 g_free (im_sig);
3545 g_free (cm_sig);
3546
3547 }
3548
3549 #endif
3550 static gboolean
3551 is_wcf_hack_disabled (void)
3552 {
3553 static gboolean disabled;
3554 static gboolean inited = FALSE;
3555 if (!inited) {
3556 disabled = g_getenv ("MONO_DISABLE_WCF_HACK") != NULL;
3557 inited = TRUE;
3558 }
3559 return disabled;
3560 }
3561
3562 static gboolean
3563 check_interface_method_override (MonoClass *class, MonoMethod *im, MonoMethod *cm, gboolean require_newslot, gboolean interface_is_explicitly_implemented_by_class, gboolean slot_is_empty, gboolean security_enabled) {
3564 MonoMethodSignature *cmsig, *imsig;
3565 if (strcmp (im->name, cm->name) == 0) {
3566 if (! (cm->flags & METHOD_ATTRIBUTE_PUBLIC)) {
3567 TRACE_INTERFACE_VTABLE (printf ("[PUBLIC CHECK FAILED]"));
3568 return FALSE;
3569 }
3570 if (! slot_is_empty) {
3571 if (require_newslot) {
3572 if (! interface_is_explicitly_implemented_by_class) {
3573 TRACE_INTERFACE_VTABLE (printf ("[NOT EXPLICIT IMPLEMENTATION IN FULL SLOT REFUSED]"));
3574 return FALSE;
3575 }
3576 if (! (cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
3577 TRACE_INTERFACE_VTABLE (printf ("[NEWSLOT CHECK FAILED]"));
3578 return FALSE;
3579 }
3580 } else {
3581 TRACE_INTERFACE_VTABLE (printf ("[FULL SLOT REFUSED]"));
3582 }
3583 }
3584 cmsig = mono_method_signature (cm);
3585 imsig = mono_method_signature (im);
3586 if (!cmsig || !imsig) {
3587 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not resolve the signature of a virtual method"));
3588 return FALSE;
3589 }
3590
3591 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3592 TRACE_INTERFACE_VTABLE (printf ("[SIGNATURE CHECK FAILED "));
3593 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3594 TRACE_INTERFACE_VTABLE (printf ("]"));
3595 return FALSE;
3596 }
3597 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS]"));
3598 /* CAS - SecurityAction.InheritanceDemand on interface */
3599 if (security_enabled && (im->flags & METHOD_ATTRIBUTE_HAS_SECURITY)) {
3600 mono_secman_inheritancedemand_method (cm, im);
3601 }
3602
3603 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
3604 mono_security_core_clr_check_override (class, cm, im);
3605 TRACE_INTERFACE_VTABLE (printf ("[NAME CHECK OK]"));
3606 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3607 char *body_name = mono_method_full_name (cm, TRUE);
3608 char *decl_name = mono_method_full_name (im, TRUE);
3609 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
3610 g_free (body_name);
3611 g_free (decl_name);
3612 return FALSE;
3613 }
3614
3615 return TRUE;
3616 } else {
3617 MonoClass *ic = im->klass;
3618 const char *ic_name_space = ic->name_space;
3619 const char *ic_name = ic->name;
3620 char *subname;
3621
3622 if (! require_newslot) {
3623 TRACE_INTERFACE_VTABLE (printf ("[INJECTED METHOD REFUSED]"));
3624 return FALSE;
3625 }
3626 if (cm->klass->rank == 0) {
3627 TRACE_INTERFACE_VTABLE (printf ("[RANK CHECK FAILED]"));
3628 return FALSE;
3629 }
3630 cmsig = mono_method_signature (cm);
3631 imsig = mono_method_signature (im);
3632 if (!cmsig || !imsig) {
3633 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not resolve the signature of a virtual method"));
3634 return FALSE;
3635 }
3636
3637 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3638 TRACE_INTERFACE_VTABLE (printf ("[(INJECTED) SIGNATURE CHECK FAILED "));
3639 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3640 TRACE_INTERFACE_VTABLE (printf ("]"));
3641 return FALSE;
3642 }
3643 if (mono_class_get_image (ic) != mono_defaults.corlib) {
3644 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE CORLIB CHECK FAILED]"));
3645 return FALSE;
3646 }
3647 if ((ic_name_space == NULL) || (strcmp (ic_name_space, "System.Collections.Generic") != 0)) {
3648 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAMESPACE CHECK FAILED]"));
3649 return FALSE;
3650 }
3651 if ((ic_name == NULL) || ((strcmp (ic_name, "IEnumerable`1") != 0) && (strcmp (ic_name, "ICollection`1") != 0) && (strcmp (ic_name, "IList`1") != 0))) {
3652 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAME CHECK FAILED]"));
3653 return FALSE;
3654 }
3655
3656 subname = strstr (cm->name, ic_name_space);
3657 if (subname != cm->name) {
3658 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL NAMESPACE CHECK FAILED]"));
3659 return FALSE;
3660 }
3661 subname += strlen (ic_name_space);
3662 if (subname [0] != '.') {
3663 TRACE_INTERFACE_VTABLE (printf ("[FIRST DOT CHECK FAILED]"));
3664 return FALSE;
3665 }
3666 subname ++;
3667 if (strstr (subname, ic_name) != subname) {
3668 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL CLASS NAME CHECK FAILED]"));
3669 return FALSE;
3670 }
3671 subname += strlen (ic_name);
3672 if (subname [0] != '.') {
3673 TRACE_INTERFACE_VTABLE (printf ("[SECOND DOT CHECK FAILED]"));
3674 return FALSE;
3675 }
3676 subname ++;
3677 if (strcmp (subname, im->name) != 0) {
3678 TRACE_INTERFACE_VTABLE (printf ("[METHOD NAME CHECK FAILED]"));
3679 return FALSE;
3680 }
3681
3682 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS (INJECTED CASE)]"));
3683 /* CAS - SecurityAction.InheritanceDemand on interface */
3684 if (security_enabled && (im->flags & METHOD_ATTRIBUTE_HAS_SECURITY)) {
3685 mono_secman_inheritancedemand_method (cm, im);
3686 }
3687
3688 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
3689 mono_security_core_clr_check_override (class, cm, im);
3690
3691 TRACE_INTERFACE_VTABLE (printf ("[INJECTED INTERFACE CHECK OK]"));
3692 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3693 char *body_name = mono_method_full_name (cm, TRUE);
3694 char *decl_name = mono_method_full_name (im, TRUE);
3695 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
3696 g_free (body_name);
3697 g_free (decl_name);
3698 return FALSE;
3699 }
3700
3701 return TRUE;
3702 }
3703 }
3704
3705 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3706 static void
3707 foreach_override (gpointer key, gpointer value, gpointer user_data) {
3708 MonoMethod *method = key;
3709 MonoMethod *override = value;
3710 MonoClass *method_class = mono_method_get_class (method);
3711 MonoClass *override_class = mono_method_get_class (override);
3712
3713 printf (" Method '%s.%s:%s' has override '%s.%s:%s'\n",
3714 mono_class_get_namespace (method_class), mono_class_get_name (method_class), mono_method_get_name (method),
3715 mono_class_get_namespace (override_class), mono_class_get_name (override_class), mono_method_get_name (override));
3716 }
3717 static void
3718 print_overrides (GHashTable *override_map, const char *message) {
3719 if (override_map) {
3720 printf ("Override map \"%s\" START:\n", message);
3721 g_hash_table_foreach (override_map, foreach_override, NULL);
3722 printf ("Override map \"%s\" END.\n", message);
3723 } else {
3724 printf ("Override map \"%s\" EMPTY.\n", message);
3725 }
3726 }
3727 static void
3728 print_vtable_full (MonoClass *class, MonoMethod** vtable, int size, int first_non_interface_slot, const char *message, gboolean print_interfaces) {
3729 char *full_name = mono_type_full_name (&class->byval_arg);
3730 int i;
3731 int parent_size;
3732
3733 printf ("*** Vtable for class '%s' at \"%s\" (size %d)\n", full_name, message, size);
3734
3735 if (print_interfaces) {
3736 print_implemented_interfaces (class);
3737 printf ("* Interfaces for class '%s' done.\nStarting vtable (size %d):\n", full_name, size);
3738 }
3739
3740 if (class->parent) {
3741 parent_size = class->parent->vtable_size;
3742 } else {
3743 parent_size = 0;
3744 }
3745 for (i = 0; i < size; ++i) {
3746 MonoMethod *cm = vtable [i];
3747 char *cm_name = cm ? mono_method_full_name (cm, TRUE) : g_strdup ("nil");
3748 char newness = (i < parent_size) ? 'O' : ((i < first_non_interface_slot) ? 'I' : 'N');
3749
3750 printf (" [%c][%03d][INDEX %03d] %s [%p]\n", newness, i, cm ? cm->slot : - 1, cm_name, cm);
3751 g_free (cm_name);
3752 }
3753
3754 g_free (full_name);
3755 }
3756 #endif
3757
3758 #if VERIFY_INTERFACE_VTABLE_CODE
3759 static int
3760 mono_method_try_get_vtable_index (MonoMethod *method)
3761 {
3762 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
3763 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
3764 if (imethod->declaring->is_generic)
3765 return imethod->declaring->slot;
3766 }
3767 return method->slot;
3768 }
3769
3770 static void
3771 mono_class_verify_vtable (MonoClass *class)
3772 {
3773 int i;
3774 char *full_name = mono_type_full_name (&class->byval_arg);
3775
3776 printf ("*** Verifying VTable of class '%s' \n", full_name);
3777 g_free (full_name);
3778 full_name = NULL;
3779
3780 if (!class->methods)
3781 return;
3782
3783 for (i = 0; i < class->method.count; ++i) {
3784 MonoMethod *cm = class->methods [i];
3785 int slot;
3786
3787 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
3788 continue;
3789
3790 g_free (full_name);
3791 full_name = mono_method_full_name (cm, TRUE);
3792
3793 slot = mono_method_try_get_vtable_index (cm);
3794 if (slot >= 0) {
3795 if (slot >= class->vtable_size) {
3796 printf ("\tInvalid method %s at index %d with vtable of length %d\n", full_name, slot, class->vtable_size);
3797 continue;
3798 }
3799
3800 if (slot >= 0 && class->vtable [slot] != cm && (class->vtable [slot])) {
3801 char *other_name = class->vtable [slot] ? mono_method_full_name (class->vtable [slot], TRUE) : g_strdup ("[null value]");
3802 printf ("\tMethod %s has slot %d but vtable has %s on it\n", full_name, slot, other_name);
3803 g_free (other_name);
3804 }
3805 } else
3806 printf ("\tVirtual method %s does n't have an assigned slot\n", full_name);
3807 }
3808 g_free (full_name);
3809 }
3810 #endif
3811
3812 static void
3813 print_unimplemented_interface_method_info (MonoClass *class, MonoClass *ic, MonoMethod *im, int im_slot, MonoMethod **overrides, int onum) {
3814 int index;
3815 char *method_signature;
3816 char *type_name;
3817
3818 for (index = 0; index < onum; ++index) {
3819 mono_trace_warning (MONO_TRACE_TYPE, " at slot %d: %s (%d) overrides %s (%d)\n", im_slot, overrides [index*2+1]->name,
3820 overrides [index*2+1]->slot, overrides [index*2]->name, overrides [index*2]->slot);
3821 }
3822 method_signature = mono_signature_get_desc (mono_method_signature (im), FALSE);
3823 type_name = mono_type_full_name (&class->byval_arg);
3824 mono_trace_warning (MONO_TRACE_TYPE, "no implementation for interface method %s::%s(%s) in class %s\n",
3825 mono_type_get_name (&ic->byval_arg), im->name, method_signature, type_name);
3826 g_free (method_signature);
3827 g_free (type_name);
3828 mono_class_setup_methods (class);
3829 if (class->exception_type) {
3830 char *name = mono_type_get_full_name (class);
3831 mono_trace_warning (MONO_TRACE_TYPE, "CLASS %s failed to resolve methods\n", name);
3832 g_free (name);
3833 return;
3834 }
3835 for (index = 0; index < class->method.count; ++index) {
3836 MonoMethod *cm = class->methods [index];
3837 method_signature = mono_signature_get_desc (mono_method_signature (cm), TRUE);
3838
3839 mono_trace_warning (MONO_TRACE_TYPE, "METHOD %s(%s)\n", cm->name, method_signature);
3840 g_free (method_signature);
3841 }
3842 }
3843
3844 static MonoMethod*
3845 mono_method_get_method_definition (MonoMethod *method)
3846 {
3847 while (method->is_inflated)
3848 method = ((MonoMethodInflated*)method)->declaring;
3849 return method;
3850 }
3851
3852 static gboolean
3853 verify_class_overrides (MonoClass *class, MonoMethod **overrides, int onum)
3854 {
3855 int i;
3856
3857 for (i = 0; i < onum; ++i) {
3858 MonoMethod *decl = overrides [i * 2];
3859 MonoMethod *body = overrides [i * 2 + 1];
3860
3861 if (mono_class_get_generic_type_definition (body->klass) != mono_class_get_generic_type_definition (class)) {
3862 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method belongs to a different class than the declared one"));
3863 return FALSE;
3864 }
3865
3866 if (!(body->flags & METHOD_ATTRIBUTE_VIRTUAL) || (body->flags & METHOD_ATTRIBUTE_STATIC)) {
3867 if (body->flags & METHOD_ATTRIBUTE_STATIC)
3868 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method must not be static to override a base type"));
3869 else
3870 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method must be virtual to override a base type"));
3871 return FALSE;
3872 }
3873
3874 if (!(decl->flags & METHOD_ATTRIBUTE_VIRTUAL) || (decl->flags & METHOD_ATTRIBUTE_STATIC)) {
3875 if (body->flags & METHOD_ATTRIBUTE_STATIC)
3876 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cannot override a static method in a base type"));
3877 else
3878 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cannot override a non virtual method in a base type"));
3879 return FALSE;
3880 }
3881
3882 if (!mono_class_is_assignable_from_slow (decl->klass, class)) {
3883 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method overrides a class or interface that extended or implemented by this type"));
3884 return FALSE;
3885 }
3886
3887 body = mono_method_get_method_definition (body);
3888 decl = mono_method_get_method_definition (decl);
3889
3890 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (body, decl, NULL)) {
3891 char *body_name = mono_method_full_name (body, TRUE);
3892 char *decl_name = mono_method_full_name (decl, TRUE);
3893 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
3894 g_free (body_name);
3895 g_free (decl_name);
3896 return FALSE;
3897 }
3898 }
3899 return TRUE;
3900 }
3901
3902 static gboolean
3903 mono_class_need_stelemref_method (MonoClass *class)
3904 {
3905 return class->rank == 1 && MONO_TYPE_IS_REFERENCE (&class->element_class->byval_arg);
3906 }
3907
3908 /*
3909 * LOCKING: this is supposed to be called with the loader lock held.
3910 */
3911 void
3912 mono_class_setup_vtable_general (MonoClass *class, MonoMethod **overrides, int onum, GList *in_setup)
3913 {
3914 MonoError error;
3915 MonoClass *k, *ic;
3916 MonoMethod **vtable;
3917 int i, max_vtsize = 0, max_iid, cur_slot = 0;
3918 GPtrArray *ifaces = NULL;
3919 GHashTable *override_map = NULL;
3920 gboolean security_enabled = mono_is_security_manager_active ();
3921 MonoMethod *cm;
3922 gpointer class_iter;
3923 #if (DEBUG_INTERFACE_VTABLE_CODE|TRACE_INTERFACE_VTABLE_CODE)
3924 int first_non_interface_slot;
3925 #endif
3926 GSList *virt_methods = NULL, *l;
3927 int stelemref_slot = 0;
3928
3929 if (class->vtable)
3930 return;
3931
3932 if (overrides && !verify_class_overrides (class, overrides, onum))
3933 return;
3934
3935 ifaces = mono_class_get_implemented_interfaces (class, &error);
3936 if (!mono_error_ok (&error)) {
3937 char *name = mono_type_get_full_name (class);
3938 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Could not resolve %s interfaces due to %s", name, mono_error_get_message (&error)));
3939 g_free (name);
3940 mono_error_cleanup (&error);
3941 return;
3942 } else if (ifaces) {
3943 for (i = 0; i < ifaces->len; i++) {
3944 MonoClass *ic = g_ptr_array_index (ifaces, i);
3945 max_vtsize += ic->method.count;
3946 }
3947 g_ptr_array_free (ifaces, TRUE);
3948 ifaces = NULL;
3949 }
3950
3951 if (class->parent) {
3952 mono_class_init (class->parent);
3953 mono_class_setup_vtable_full (class->parent, in_setup);
3954
3955 if (class->parent->exception_type) {
3956 char *name = mono_type_get_full_name (class->parent);
3957 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Parent %s failed to load", name));
3958 g_free (name);
3959 return;
3960 }
3961
3962 max_vtsize += class->parent->vtable_size;
3963 cur_slot = class->parent->vtable_size;
3964 }
3965
3966 max_vtsize += class->method.count;
3967
3968 /*Array have a slot for stelemref*/
3969 if (mono_class_need_stelemref_method (class)) {
3970 stelemref_slot = cur_slot;
3971 ++max_vtsize;
3972 ++cur_slot;
3973 }
3974
3975 vtable = alloca (sizeof (gpointer) * max_vtsize);
3976 memset (vtable, 0, sizeof (gpointer) * max_vtsize);
3977
3978 /* printf ("METAINIT %s.%s\n", class->name_space, class->name); */
3979
3980 cur_slot = setup_interface_offsets (class, cur_slot);
3981 if (cur_slot == -1) /*setup_interface_offsets fails the type.*/
3982 return;
3983
3984 max_iid = class->max_interface_id;
3985 DEBUG_INTERFACE_VTABLE (first_non_interface_slot = cur_slot);
3986
3987 /* Optimized version for generic instances */
3988 if (class->generic_class) {
3989 MonoError error;
3990 MonoClass *gklass = class->generic_class->container_class;
3991 MonoMethod **tmp;
3992
3993 mono_class_setup_vtable_full (gklass, in_setup);
3994 if (gklass->exception_type != MONO_EXCEPTION_NONE) {
3995 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
3996 return;
3997 }
3998
3999 tmp = mono_class_alloc0 (class, sizeof (gpointer) * gklass->vtable_size);
4000 class->vtable_size = gklass->vtable_size;
4001 for (i = 0; i < gklass->vtable_size; ++i)
4002 if (gklass->vtable [i]) {
4003 MonoMethod *inflated = mono_class_inflate_generic_method_full_checked (gklass->vtable [i], class, mono_class_get_context (class), &error);
4004 if (!mono_error_ok (&error)) {
4005 char *err_msg = g_strdup_printf ("Could not inflate method due to %s", mono_error_get_message (&error));
4006 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, err_msg);
4007 g_free (err_msg);
4008 mono_error_cleanup (&error);
4009 return;
4010 }
4011 tmp [i] = inflated;
4012 tmp [i]->slot = gklass->vtable [i]->slot;
4013 }
4014 mono_memory_barrier ();
4015 class->vtable = tmp;
4016
4017 /* Have to set method->slot for abstract virtual methods */
4018 if (class->methods && gklass->methods) {
4019 for (i = 0; i < class->method.count; ++i)
4020 if (class->methods [i]->slot == -1)
4021 class->methods [i]->slot = gklass->methods [i]->slot;
4022 }
4023
4024 return;
4025 }
4026
4027 if (class->parent && class->parent->vtable_size) {
4028 MonoClass *parent = class->parent;
4029 int i;
4030
4031 memcpy (vtable, parent->vtable, sizeof (gpointer) * parent->vtable_size);
4032
4033 // Also inherit parent interface vtables, just as a starting point.
4034 // This is needed otherwise bug-77127.exe fails when the property methods
4035 // have different names in the iterface and the class, because for child
4036 // classes the ".override" information is not used anymore.
4037 for (i = 0; i < parent->interface_offsets_count; i++) {
4038 MonoClass *parent_interface = parent->interfaces_packed [i];
4039 int interface_offset = mono_class_interface_offset (class, parent_interface);
4040 /*FIXME this is now dead code as this condition will never hold true.
4041 Since interface offsets are inherited then the offset of an interface implemented
4042 by a parent will never be the out of it's vtable boundary.
4043 */
4044 if (interface_offset >= parent->vtable_size) {
4045 int parent_interface_offset = mono_class_interface_offset (parent, parent_interface);
4046 int j;
4047
4048 mono_class_setup_methods (parent_interface); /*FIXME Just kill this whole chunk of dead code*/
4049 TRACE_INTERFACE_VTABLE (printf (" +++ Inheriting interface %s.%s\n", parent_interface->name_space, parent_interface->name));
4050 for (j = 0; j < parent_interface->method.count && !class->exception_type; j++) {
4051 vtable [interface_offset + j] = parent->vtable [parent_interface_offset + j];
4052 TRACE_INTERFACE_VTABLE (printf (" --- Inheriting: [%03d][(%03d)+(%03d)] => [%03d][(%03d)+(%03d)]\n",
4053 parent_interface_offset + j, parent_interface_offset, j,
4054 interface_offset + j, interface_offset, j));
4055 }
4056 }
4057
4058 }
4059 }
4060
4061 /*Array have a slot for stelemref*/
4062 if (mono_class_need_stelemref_method (class)) {
4063 MonoMethod *method = mono_marshal_get_virtual_stelemref (class);
4064 if (!method->slot)
4065 method->slot = stelemref_slot;
4066 else
4067 g_assert (method->slot == stelemref_slot);
4068
4069 vtable [stelemref_slot] = method;
4070 }
4071
4072 TRACE_INTERFACE_VTABLE (print_vtable_full (class, vtable, cur_slot, first_non_interface_slot, "AFTER INHERITING PARENT VTABLE", TRUE));
4073 /* override interface methods */
4074 for (i = 0; i < onum; i++) {
4075 MonoMethod *decl = overrides [i*2];
4076 if (MONO_CLASS_IS_INTERFACE (decl->klass)) {
4077 int dslot;
4078 dslot = mono_method_get_vtable_slot (decl);
4079 if (dslot == -1) {
4080 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4081 return;
4082 }
4083
4084 dslot += mono_class_interface_offset (class, decl->klass);
4085 vtable [dslot] = overrides [i*2 + 1];
4086 vtable [dslot]->slot = dslot;
4087 if (!override_map)
4088 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4089
4090 g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
4091
4092 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
4093 mono_security_core_clr_check_override (class, vtable [dslot], decl);
4094 }
4095 }
4096 TRACE_INTERFACE_VTABLE (print_overrides (override_map, "AFTER OVERRIDING INTERFACE METHODS"));
4097 TRACE_INTERFACE_VTABLE (print_vtable_full (class, vtable, cur_slot, first_non_interface_slot, "AFTER OVERRIDING INTERFACE METHODS", FALSE));
4098
4099 /*
4100 * Create a list of virtual methods to avoid calling
4101 * mono_class_get_virtual_methods () which is slow because of the metadata
4102 * optimization.
4103 */
4104 {
4105 gpointer iter = NULL;
4106 MonoMethod *cm;
4107
4108 virt_methods = NULL;
4109 while ((cm = mono_class_get_virtual_methods (class, &iter))) {
4110 virt_methods = g_slist_prepend (virt_methods, cm);
4111 }
4112 if (class->exception_type)
4113 goto fail;
4114 }
4115
4116 // Loop on all implemented interfaces...
4117 for (i = 0; i < class->interface_offsets_count; i++) {
4118 MonoClass *parent = class->parent;
4119 int ic_offset;
4120 gboolean interface_is_explicitly_implemented_by_class;
4121 int im_index;
4122
4123 ic = class->interfaces_packed [i];
4124 ic_offset = mono_class_interface_offset (class, ic);
4125
4126 mono_class_setup_methods (ic);
4127 if (ic->exception_type)
4128 goto fail;
4129
4130 // Check if this interface is explicitly implemented (instead of just inherited)
4131 if (parent != NULL) {
4132 int implemented_interfaces_index;
4133 interface_is_explicitly_implemented_by_class = FALSE;
4134 for (implemented_interfaces_index = 0; implemented_interfaces_index < class->interface_count; implemented_interfaces_index++) {
4135 if (ic == class->interfaces [implemented_interfaces_index]) {
4136 interface_is_explicitly_implemented_by_class = TRUE;
4137 break;
4138 }
4139 }
4140 } else {
4141 interface_is_explicitly_implemented_by_class = TRUE;
4142 }
4143
4144 // Loop on all interface methods...
4145 for (im_index = 0; im_index < ic->method.count; im_index++) {
4146 MonoMethod *im = ic->methods [im_index];
4147 int im_slot = ic_offset + im->slot;
4148 MonoMethod *override_im = (override_map != NULL) ? g_hash_table_lookup (override_map, im) : NULL;
4149
4150 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4151 continue;
4152
4153 TRACE_INTERFACE_VTABLE (printf ("\tchecking iface method %s\n", mono_method_full_name (im,1)));
4154
4155 // If there is an explicit implementation, just use it right away,
4156 // otherwise look for a matching method
4157 if (override_im == NULL) {
4158 int cm_index;
4159 gpointer iter;
4160 MonoMethod *cm;
4161
4162 // First look for a suitable method among the class methods
4163 iter = NULL;
4164 for (l = virt_methods; l; l = l->next) {
4165 cm = l->data;
4166 TRACE_INTERFACE_VTABLE (printf (" For slot %d ('%s'.'%s':'%s'), trying method '%s'.'%s':'%s'... [EXPLICIT IMPLEMENTATION = %d][SLOT IS NULL = %d]", im_slot, ic->name_space, ic->name, im->name, cm->klass->name_space, cm->klass->name, cm->name, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL)));
4167 if (check_interface_method_override (class, im, cm, TRUE, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL), security_enabled)) {
4168 TRACE_INTERFACE_VTABLE (printf ("[check ok]: ASSIGNING"));
4169 vtable [im_slot] = cm;
4170 /* Why do we need this? */
4171 if (cm->slot < 0) {
4172 cm->slot = im_slot;
4173 }
4174 }
4175 TRACE_INTERFACE_VTABLE (printf ("\n"));
4176 if (class->exception_type) /*Might be set by check_interface_method_override*/
4177 goto fail;
4178 }
4179
4180 // If the slot is still empty, look in all the inherited virtual methods...
4181 if ((vtable [im_slot] == NULL) && class->parent != NULL) {
4182 MonoClass *parent = class->parent;
4183 // Reverse order, so that last added methods are preferred
4184 for (cm_index = parent->vtable_size - 1; cm_index >= 0; cm_index--) {
4185 MonoMethod *cm = parent->vtable [cm_index];
4186
4187 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf (" For slot %d ('%s'.'%s':'%s'), trying (ancestor) method '%s'.'%s':'%s'... ", im_slot, ic->name_space, ic->name, im->name, cm->klass->name_space, cm->klass->name, cm->name));
4188 if ((cm != NULL) && check_interface_method_override (class, im, cm, FALSE, FALSE, TRUE, security_enabled)) {
4189 TRACE_INTERFACE_VTABLE (printf ("[everything ok]: ASSIGNING"));
4190 vtable [im_slot] = cm;
4191 /* Why do we need this? */
4192 if (cm->slot < 0) {
4193 cm->slot = im_slot;
4194 }
4195 break;
4196 }
4197 if (class->exception_type) /*Might be set by check_interface_method_override*/
4198 goto fail;
4199 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf ("\n"));
4200 }
4201 }
4202 } else {
4203 g_assert (vtable [im_slot] == override_im);
4204 }
4205 }
4206 }
4207
4208 // If the class is not abstract, check that all its interface slots are full.
4209 // The check is done here and not directly at the end of the loop above because
4210 // it can happen (for injected generic array interfaces) that the same slot is
4211 // processed multiple times (those interfaces have overlapping slots), and it
4212 // will not always be the first pass the one that fills the slot.
4213 if (! (class->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4214 for (i = 0; i < class->interface_offsets_count; i++) {
4215 int ic_offset;
4216 int im_index;
4217
4218 ic = class->interfaces_packed [i];
4219 ic_offset = mono_class_interface_offset (class, ic);
4220
4221 for (im_index = 0; im_index < ic->method.count; im_index++) {
4222 MonoMethod *im = ic->methods [im_index];
4223 int im_slot = ic_offset + im->slot;
4224
4225 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4226 continue;
4227
4228 TRACE_INTERFACE_VTABLE (printf (" [class is not abstract, checking slot %d for interface '%s'.'%s', method %s, slot check is %d]\n",
4229 im_slot, ic->name_space, ic->name, im->name, (vtable [im_slot] == NULL)));
4230 if (vtable [im_slot] == NULL) {
4231 print_unimplemented_interface_method_info (class, ic, im, im_slot, overrides, onum);
4232 goto fail;
4233 }
4234 }
4235 }
4236 }
4237
4238 TRACE_INTERFACE_VTABLE (print_vtable_full (class, vtable, cur_slot, first_non_interface_slot, "AFTER SETTING UP INTERFACE METHODS", FALSE));
4239 class_iter = NULL;
4240 for (l = virt_methods; l; l = l->next) {
4241 cm = l->data;
4242 /*
4243 * If the method is REUSE_SLOT, we must check in the
4244 * base class for a method to override.
4245 */
4246 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
4247 int slot = -1;
4248 for (k = class->parent; k ; k = k->parent) {
4249 gpointer k_iter;
4250 MonoMethod *m1;
4251
4252 k_iter = NULL;
4253 while ((m1 = mono_class_get_virtual_methods (k, &k_iter))) {
4254 MonoMethodSignature *cmsig, *m1sig;
4255
4256 cmsig = mono_method_signature (cm);
4257 m1sig = mono_method_signature (m1);
4258
4259 if (!cmsig || !m1sig) {
4260 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4261 return;
4262 }
4263
4264 if (!strcmp(cm->name, m1->name) &&
4265 mono_metadata_signature_equal (cmsig, m1sig)) {
4266
4267 /* CAS - SecurityAction.InheritanceDemand */
4268 if (security_enabled && (m1->flags & METHOD_ATTRIBUTE_HAS_SECURITY)) {
4269 mono_secman_inheritancedemand_method (cm, m1);
4270 }
4271
4272 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
4273 mono_security_core_clr_check_override (class, cm, m1);
4274
4275 slot = mono_method_get_vtable_slot (m1);
4276 if (slot == -1)
4277 goto fail;
4278
4279 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, m1, NULL)) {
4280 char *body_name = mono_method_full_name (cm, TRUE);
4281 char *decl_name = mono_method_full_name (m1, TRUE);
4282 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
4283 g_free (body_name);
4284 g_free (decl_name);
4285 goto fail;
4286 }
4287
4288 g_assert (cm->slot < max_vtsize);
4289 if (!override_map)
4290 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4291 TRACE_INTERFACE_VTABLE (printf ("adding iface override from %s [%p] to %s [%p]\n",
4292 mono_method_full_name (m1, 1), m1,
4293 mono_method_full_name (cm, 1), cm));
4294 g_hash_table_insert (override_map, m1, cm);
4295 break;
4296 }
4297 }
4298 if (k->exception_type)
4299 goto fail;
4300
4301 if (slot >= 0)
4302 break;
4303 }
4304 if (slot >= 0)
4305 cm->slot = slot;
4306 }
4307
4308 /*Non final newslot methods must be given a non-interface vtable slot*/
4309 if ((cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && !(cm->flags & METHOD_ATTRIBUTE_FINAL) && cm->slot >= 0)
4310 cm->slot = -1;
4311
4312 if (cm->slot < 0)
4313 cm->slot = cur_slot++;
4314
4315 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT))
4316 vtable [cm->slot] = cm;
4317 }
4318
4319 /* override non interface methods */
4320 for (i = 0; i < onum; i++) {
4321 MonoMethod *decl = overrides [i*2];
4322 if (!MONO_CLASS_IS_INTERFACE (decl->klass)) {
4323 g_assert (decl->slot != -1);
4324 vtable [decl->slot] = overrides [i*2 + 1];
4325 overrides [i * 2 + 1]->slot = decl->slot;
4326 if (!override_map)
4327 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4328 TRACE_INTERFACE_VTABLE (printf ("adding explicit override from %s [%p] to %s [%p]\n",
4329 mono_method_full_name (decl, 1), decl,
4330 mono_method_full_name (overrides [i * 2 + 1], 1), overrides [i * 2 + 1]));
4331 g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
4332
4333 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
4334 mono_security_core_clr_check_override (class, vtable [decl->slot], decl);
4335 }
4336 }
4337
4338 /*
4339 * If a method occupies more than one place in the vtable, and it is
4340 * overriden, then change the other occurances too.
4341 */
4342 if (override_map) {
4343 MonoMethod *cm;
4344
4345 for (i = 0; i < max_vtsize; ++i)
4346 if (vtable [i]) {
4347 TRACE_INTERFACE_VTABLE (printf ("checking slot %d method %s[%p] for overrides\n", i, mono_method_full_name (vtable [i], 1), vtable [i]));
4348
4349 cm = g_hash_table_lookup (override_map, vtable [i]);
4350 if (cm)
4351 vtable [i] = cm;
4352 }
4353
4354 g_hash_table_destroy (override_map);
4355 override_map = NULL;
4356 }
4357
4358 g_slist_free (virt_methods);
4359 virt_methods = NULL;
4360
4361 /* Ensure that all vtable slots are filled with concrete instance methods */
4362 if (!(class->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4363 for (i = 0; i < cur_slot; ++i) {
4364 if (vtable [i] == NULL || (vtable [i]->flags & (METHOD_ATTRIBUTE_ABSTRACT | METHOD_ATTRIBUTE_STATIC))) {
4365 char *type_name = mono_type_get_full_name (class);
4366 char *method_name = vtable [i] ? mono_method_full_name (vtable [i], TRUE) : g_strdup ("none");
4367 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Type %s has invalid vtable method slot %d with method %s", type_name, i, method_name));
4368 g_free (type_name);
4369 g_free (method_name);
4370 return;
4371 }
4372 }
4373 }
4374
4375 if (class->generic_class) {
4376 MonoClass *gklass = class->generic_class->container_class;
4377
4378 mono_class_init (gklass);
4379
4380 class->vtable_size = MAX (gklass->vtable_size, cur_slot);
4381 } else {
4382 /* Check that the vtable_size value computed in mono_class_init () is correct */
4383 if (class->vtable_size)
4384 g_assert (cur_slot == class->vtable_size);
4385 class->vtable_size = cur_slot;
4386 }
4387
4388 /* Try to share the vtable with our parent. */
4389 if (class->parent && (class->parent->vtable_size == class->vtable_size) && (memcmp (class->parent->vtable, vtable, sizeof (gpointer) * class->vtable_size) == 0)) {
4390 mono_memory_barrier ();
4391 class->vtable = class->parent->vtable;
4392 } else {
4393 MonoMethod **tmp = mono_class_alloc0 (class, sizeof (gpointer) * class->vtable_size);
4394 memcpy (tmp, vtable, sizeof (gpointer) * class->vtable_size);
4395 mono_memory_barrier ();
4396 class->vtable = tmp;
4397 }
4398
4399 DEBUG_INTERFACE_VTABLE (print_vtable_full (class, class->vtable, class->vtable_size, first_non_interface_slot, "FINALLY", FALSE));
4400 if (mono_print_vtable) {
4401 int icount = 0;
4402
4403 print_implemented_interfaces (class);
4404
4405 for (i = 0; i <= max_iid; i++)
4406 if (MONO_CLASS_IMPLEMENTS_INTERFACE (class, i))
4407 icount++;
4408
4409 printf ("VTable %s (vtable entries = %d, interfaces = %d)\n", mono_type_full_name (&class->byval_arg),
4410 class->vtable_size, icount);
4411
4412 for (i = 0; i < cur_slot; ++i) {
4413 MonoMethod *cm;
4414
4415 cm = vtable [i];
4416 if (cm) {
4417 printf (" slot assigned: %03d, slot index: %03d %s\n", i, cm->slot,
4418 mono_method_full_name (cm, TRUE));
4419 }
4420 }
4421
4422
4423 if (icount) {
4424 printf ("Interfaces %s.%s (max_iid = %d)\n", class->name_space,
4425 class->name, max_iid);
4426
4427 for (i = 0; i < class->interface_count; i++) {
4428 ic = class->interfaces [i];
4429 printf (" slot offset: %03d, method count: %03d, iid: %03d %s\n",
4430 mono_class_interface_offset (class, ic),
4431 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4432 }
4433
4434 for (k = class->parent; k ; k = k->parent) {
4435 for (i = 0; i < k->interface_count; i++) {
4436 ic = k->interfaces [i];
4437 printf (" parent slot offset: %03d, method count: %03d, iid: %03d %s\n",
4438 mono_class_interface_offset (class, ic),
4439 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4440 }
4441 }
4442 }
4443 }
4444
4445 VERIFY_INTERFACE_VTABLE (mono_class_verify_vtable (class));
4446 return;
4447
4448 fail:
4449 {
4450 char *name = mono_type_get_full_name (class);
4451 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("VTable setup of type %s failed", name));
4452 g_free (name);
4453 if (override_map)
4454 g_hash_table_destroy (override_map);
4455 if (virt_methods)
4456 g_slist_free (virt_methods);
4457 }
4458 }
4459
4460 /*
4461 * mono_method_get_vtable_slot:
4462 *
4463 * Returns method->slot, computing it if neccesary. Return -1 on failure.
4464 * LOCKING: Acquires the loader lock.
4465 *
4466 * FIXME Use proper MonoError machinery here.
4467 */
4468 int
4469 mono_method_get_vtable_slot (MonoMethod *method)
4470 {
4471 if (method->slot == -1) {
4472 mono_class_setup_vtable (method->klass);
4473 if (method->klass->exception_type)
4474 return -1;
4475 g_assert (method->slot != -1);
4476 }
4477 return method->slot;
4478 }
4479
4480 /**
4481 * mono_method_get_vtable_index:
4482 * @method: a method
4483 *
4484 * Returns the index into the runtime vtable to access the method or,
4485 * in the case of a virtual generic method, the virtual generic method
4486 * thunk. Returns -1 on failure.
4487 *
4488 * FIXME Use proper MonoError machinery here.
4489 */
4490 int
4491 mono_method_get_vtable_index (MonoMethod *method)
4492 {
4493 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4494 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4495 if (imethod->declaring->is_generic)
4496 return mono_method_get_vtable_slot (imethod->declaring);
4497 }
4498 return mono_method_get_vtable_slot (method);
4499 }
4500
4501 static MonoMethod *default_ghc = NULL;
4502 static MonoMethod *default_finalize = NULL;
4503 static int finalize_slot = -1;
4504 static int ghc_slot = -1;
4505
4506 static void
4507 initialize_object_slots (MonoClass *class)
4508 {
4509 int i;
4510 if (default_ghc)
4511 return;
4512 if (class == mono_defaults.object_class) {
4513 mono_class_setup_vtable (class);
4514 for (i = 0; i < class->vtable_size; ++i) {
4515 MonoMethod *cm = class->vtable [i];
4516
4517 if (!strcmp (cm->name, "GetHashCode"))
4518 ghc_slot = i;
4519 else if (!strcmp (cm->name, "Finalize"))
4520 finalize_slot = i;
4521 }
4522
4523 g_assert (ghc_slot > 0);
4524 default_ghc = class->vtable [ghc_slot];
4525
4526 g_assert (finalize_slot > 0);
4527 default_finalize = class->vtable [finalize_slot];
4528 }
4529 }
4530
4531 typedef struct {
4532 MonoMethod *array_method;
4533 char *name;
4534 } GenericArrayMethodInfo;
4535
4536 static int generic_array_method_num = 0;
4537 static GenericArrayMethodInfo *generic_array_method_info = NULL;
4538
4539 static int
4540 generic_array_methods (MonoClass *class)
4541 {
4542 int i, count_generic = 0;
4543 GList *list = NULL, *tmp;
4544 if (generic_array_method_num)
4545 return generic_array_method_num;
4546 mono_class_setup_methods (class->parent); /*This is setting up System.Array*/
4547 g_assert (!class->parent->exception_type); /*So hitting this assert is a huge problem*/
4548 for (i = 0; i < class->parent->method.count; i++) {
4549 MonoMethod *m = class->parent->methods [i];
4550 if (!strncmp (m->name, "InternalArray__", 15)) {
4551 count_generic++;
4552 list = g_list_prepend (list, m);
4553 }
4554 }
4555 list = g_list_reverse (list);
4556 generic_array_method_info = mono_image_alloc (mono_defaults.corlib, sizeof (GenericArrayMethodInfo) * count_generic);
4557 i = 0;
4558 for (tmp = list; tmp; tmp = tmp->next) {
4559 const char *mname, *iname;
4560 gchar *name;
4561 MonoMethod *m = tmp->data;
4562 generic_array_method_info [i].array_method = m;
4563 if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
4564 iname = "System.Collections.Generic.ICollection`1.";
4565 mname = m->name + 27;
4566 } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
4567 iname = "System.Collections.Generic.IEnumerable`1.";
4568 mname = m->name + 27;
4569 } else if (!strncmp (m->name, "InternalArray__", 15)) {
4570 iname = "System.Collections.Generic.IList`1.";
4571 mname = m->name + 15;
4572 } else {
4573 g_assert_not_reached ();
4574 }
4575
4576 name = mono_image_alloc (mono_defaults.corlib, strlen (iname) + strlen (mname) + 1);
4577 strcpy (name, iname);
4578 strcpy (name + strlen (iname), mname);
4579 generic_array_method_info [i].name = name;
4580 i++;
4581 }
4582 /*g_print ("array generic methods: %d\n", count_generic);*/
4583
4584 generic_array_method_num = count_generic;
4585 g_list_free (list);
4586 return generic_array_method_num;
4587 }
4588
4589 static void
4590 setup_generic_array_ifaces (MonoClass *class, MonoClass *iface, MonoMethod **methods, int pos)
4591 {
4592 MonoGenericContext tmp_context;
4593 int i;
4594
4595 tmp_context.class_inst = NULL;
4596 tmp_context.method_inst = iface->generic_class->context.class_inst;
4597 //g_print ("setting up array interface: %s\n", mono_type_get_name_full (&iface->byval_arg, 0));
4598
4599 for (i = 0; i < generic_array_method_num; i++) {
4600 MonoMethod *m = generic_array_method_info [i].array_method;
4601 MonoMethod *inflated;
4602
4603 inflated = mono_class_inflate_generic_method (m, &tmp_context);
4604 methods [pos++] = mono_marshal_get_generic_array_helper (class, iface, generic_array_method_info [i].name, inflated);
4605 }
4606 }
4607
4608 static char*
4609 concat_two_strings_with_zero (MonoImage *image, const char *s1, const char *s2)
4610 {
4611 int null_length = strlen ("(null)");
4612 int len = (s1 ? strlen (s1) : null_length) + (s2 ? strlen (s2) : null_length) + 2;
4613 char *s = mono_image_alloc (image, len);
4614 int result;
4615
4616 result = g_snprintf (s, len, "%s%c%s", s1 ? s1 : "(null)", '\0', s2 ? s2 : "(null)");
4617 g_assert (result == len - 1);
4618
4619 return s;
4620 }
4621
4622 static void
4623 set_failure_from_loader_error (MonoClass *class, MonoLoaderError *error)
4624 {
4625 gpointer exception_data = NULL;
4626
4627 switch (error->exception_type) {
4628 case MONO_EXCEPTION_TYPE_LOAD:
4629 exception_data = concat_two_strings_with_zero (class->image, error->class_name, error->assembly_name);
4630 break;
4631
4632 case MONO_EXCEPTION_MISSING_METHOD:
4633 exception_data = concat_two_strings_with_zero (class->image, error->class_name, error->member_name);
4634 break;
4635
4636 case MONO_EXCEPTION_MISSING_FIELD: {
4637 const char *name_space = error->klass->name_space ? error->klass->name_space : NULL;
4638 const char *class_name;
4639
4640 if (name_space)
4641 class_name = g_strdup_printf ("%s.%s", name_space, error->klass->name);
4642 else
4643 class_name = error->klass->name;
4644
4645 exception_data = concat_two_strings_with_zero (class->image, class_name, error->member_name);
4646
4647 if (name_space)
4648 g_free ((void*)class_name);
4649 break;
4650 }
4651
4652 case MONO_EXCEPTION_FILE_NOT_FOUND: {
4653 const char *msg;
4654
4655 if (error->ref_only)
4656 msg = "Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.";
4657 else
4658 msg = "Could not load file or assembly '%s' or one of its dependencies.";
4659
4660 exception_data = concat_two_strings_with_zero (class->image, msg, error->assembly_name);
4661 break;
4662 }
4663
4664 case MONO_EXCEPTION_BAD_IMAGE:
4665 exception_data = error->msg;
4666 break;
4667
4668 default :
4669 g_assert_not_reached ();
4670 }
4671
4672 mono_class_set_failure (class, error->exception_type, exception_data);
4673 }
4674
4675 /**
4676 * mono_class_init:
4677 * @class: the class to initialize
4678 *
4679 * Compute the instance_size, class_size and other infos that cannot be
4680 * computed at mono_class_get() time. Also compute vtable_size if possible.
4681 * Returns TRUE on success or FALSE if there was a problem in loading
4682 * the type (incorrect assemblies, missing assemblies, methods, etc).
4683 *
4684 * LOCKING: Acquires the loader lock.
4685 */
4686 gboolean
4687 mono_class_init (MonoClass *class)
4688 {
4689 int i;
4690 MonoCachedClassInfo cached_info;
4691 gboolean has_cached_info;
4692
4693 g_assert (class);
4694
4695 /* Double-checking locking pattern */
4696 if (class->inited || class->exception_type)
4697 return class->exception_type == MONO_EXCEPTION_NONE;
4698
4699 /*g_print ("Init class %s\n", mono_type_get_full_name (class));*/
4700
4701 /* We do everything inside the lock to prevent races */
4702 mono_loader_lock ();
4703
4704 if (class->inited || class->exception_type) {
4705 mono_loader_unlock ();
4706 /* Somebody might have gotten in before us */
4707 return class->exception_type == MONO_EXCEPTION_NONE;
4708 }
4709
4710 if (class->init_pending) {
4711 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Recursive type definition detected"));
4712 goto leave;
4713 }
4714
4715 class->init_pending = 1;
4716
4717 if (mono_verifier_is_enabled_for_class (class) && !mono_verifier_verify_class (class)) {
4718 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, concat_two_strings_with_zero (class->image, class->name, class->image->assembly_name));
4719 goto leave;
4720 }
4721
4722
4723 if (class->byval_arg.type == MONO_TYPE_ARRAY || class->byval_arg.type == MONO_TYPE_SZARRAY) {
4724 MonoClass *element_class = class->element_class;
4725 if (!element_class->inited)
4726 mono_class_init (element_class);
4727 if (element_class->exception_type != MONO_EXCEPTION_NONE) {
4728 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4729 goto leave;
4730 }
4731 }
4732
4733 /* CAS - SecurityAction.InheritanceDemand */
4734 if (mono_is_security_manager_active () && class->parent && (class->parent->flags & TYPE_ATTRIBUTE_HAS_SECURITY)) {
4735 mono_secman_inheritancedemand_class (class, class->parent);
4736 }
4737
4738 mono_stats.initialized_class_count++;
4739
4740 if (class->generic_class && !class->generic_class->is_dynamic) {
4741 MonoClass *gklass = class->generic_class->container_class;
4742
4743 mono_stats.generic_class_count++;
4744
4745 class->method = gklass->method;
4746 class->field = gklass->field;
4747
4748 mono_class_init (gklass);
4749 // FIXME: Why is this needed ?
4750 if (!gklass->exception_type)
4751 mono_class_setup_methods (gklass);
4752 if (gklass->exception_type) {
4753 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Generic Type Defintion failed to init"));
4754 goto leave;
4755 }
4756
4757 if (MONO_CLASS_IS_INTERFACE (class))
4758 class->interface_id = mono_get_unique_iid (class);
4759 }
4760
4761 if (class->parent && !class->parent->inited)
4762 mono_class_init (class->parent);
4763
4764 has_cached_info = mono_class_get_cached_class_info (class, &cached_info);
4765
4766 if (class->generic_class || class->image->dynamic || !class->type_token || (has_cached_info && !cached_info.has_nested_classes))
4767 class->nested_classes_inited = TRUE;
4768
4769 /*
4770 * Computes the size used by the fields, and their locations
4771 */
4772 if (has_cached_info) {
4773 class->instance_size = cached_info.instance_size;
4774 class->sizes.class_size = cached_info.class_size;
4775 class->packing_size = cached_info.packing_size;
4776 class->min_align = cached_info.min_align;
4777 class->blittable = cached_info.blittable;
4778 class->has_references = cached_info.has_references;
4779 class->has_static_refs = cached_info.has_static_refs;
4780 class->no_special_static_fields = cached_info.no_special_static_fields;
4781 }
4782 else
4783 if (!class->size_inited){
4784 mono_class_setup_fields (class);
4785 if (class->exception_type || mono_loader_get_last_error ())
4786 goto leave;
4787 }
4788
4789 /* Initialize arrays */
4790 if (class->rank) {
4791 class->method.count = 3 + (class->rank > 1? 2: 1);
4792
4793 if (class->interface_count) {
4794 int count_generic = generic_array_methods (class);
4795 class->method.count += class->interface_count * count_generic;
4796 }
4797 }
4798
4799 mono_class_setup_supertypes (class);
4800
4801 if (!default_ghc)
4802 initialize_object_slots (class);
4803
4804 /*
4805 * Initialize the rest of the data without creating a generic vtable if possible.
4806 * If possible, also compute vtable_size, so mono_class_create_runtime_vtable () can
4807 * also avoid computing a generic vtable.
4808 */
4809 if (has_cached_info) {
4810 /* AOT case */
4811 class->vtable_size = cached_info.vtable_size;
4812 class->has_finalize = cached_info.has_finalize;
4813 class->has_finalize_inited = TRUE;
4814 class->ghcimpl = cached_info.ghcimpl;
4815 class->has_cctor = cached_info.has_cctor;
4816 } else if (class->rank == 1 && class->byval_arg.type == MONO_TYPE_SZARRAY) {
4817 /* SZARRAY can have 2 vtable layouts, with and without the stelemref method.
4818 * The first slot if for array with.
4819 */
4820 static int szarray_vtable_size[2] = { 0 };
4821
4822 int slot = MONO_TYPE_IS_REFERENCE (&class->element_class->byval_arg) ? 0 : 1;
4823
4824 /* SZARRAY case */
4825 if (!szarray_vtable_size [slot]) {
4826 mono_class_setup_vtable (class);
4827 szarray_vtable_size [slot] = class->vtable_size;
4828 } else {
4829 class->vtable_size = szarray_vtable_size[slot];
4830 }
4831 class->has_finalize_inited = TRUE;
4832 } else if (class->generic_class && !MONO_CLASS_IS_INTERFACE (class)) {
4833 MonoClass *gklass = class->generic_class->container_class;
4834
4835 /* Generic instance case */
4836 class->ghcimpl = gklass->ghcimpl;
4837 class->has_finalize = mono_class_has_finalizer (gklass);
4838 class->has_finalize_inited = TRUE;
4839 class->has_cctor = gklass->has_cctor;
4840
4841 mono_class_setup_vtable (gklass);
4842 if (gklass->exception_type) {
4843 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4844 goto leave;
4845 }
4846
4847 class->vtable_size = gklass->vtable_size;
4848 } else {
4849 /* General case */
4850
4851 /* ghcimpl is not currently used
4852 class->ghcimpl = 1;
4853 if (class->parent) {
4854 MonoMethod *cmethod = class->vtable [ghc_slot];
4855 if (cmethod->is_inflated)
4856 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
4857 if (cmethod == default_ghc) {
4858 class->ghcimpl = 0;
4859 }
4860 }
4861 */
4862
4863 /* C# doesn't allow interfaces to have cctors */
4864 if (!MONO_CLASS_IS_INTERFACE (class) || class->image != mono_defaults.corlib) {
4865 MonoMethod *cmethod = NULL;
4866
4867 if (class->type_token) {
4868 cmethod = find_method_in_metadata (class, ".cctor", 0, METHOD_ATTRIBUTE_SPECIAL_NAME);
4869 /* The find_method function ignores the 'flags' argument */
4870 if (cmethod && (cmethod->flags & METHOD_ATTRIBUTE_SPECIAL_NAME))
4871 class->has_cctor = 1;
4872 } else {
4873 mono_class_setup_methods (class);
4874 if (class->exception_type)
4875 goto leave;
4876
4877 for (i = 0; i < class->method.count; ++i) {
4878 MonoMethod *method = class->methods [i];
4879 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
4880 (strcmp (".cctor", method->name) == 0)) {
4881 class->has_cctor = 1;
4882 break;
4883 }
4884 }
4885 }
4886 }
4887 }
4888
4889 if (class->parent) {
4890 int first_iface_slot;
4891 /* This will compute class->parent->vtable_size for some classes */
4892 mono_class_init (class->parent);
4893 if (class->parent->exception_type) {
4894 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4895 goto leave;
4896 }
4897 if (mono_loader_get_last_error ())
4898 goto leave;
4899 if (!class->parent->vtable_size) {
4900 /* FIXME: Get rid of this somehow */
4901 mono_class_setup_vtable (class->parent);
4902 if (class->parent->exception_type) {
4903 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4904 goto leave;
4905 }
4906 if (mono_loader_get_last_error ())
4907 goto leave;
4908 }
4909 first_iface_slot = class->parent->vtable_size;
4910 if (mono_class_need_stelemref_method (class))
4911 ++first_iface_slot;
4912 setup_interface_offsets (class, first_iface_slot);
4913 } else {
4914 setup_interface_offsets (class, 0);
4915 }
4916
4917 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
4918 mono_security_core_clr_check_inheritance (class);
4919
4920 if (mono_loader_get_last_error ()) {
4921 if (class->exception_type == MONO_EXCEPTION_NONE) {
4922 set_failure_from_loader_error (class, mono_loader_get_last_error ());
4923 }
4924 mono_loader_clear_error ();
4925 }
4926
4927 if (class->generic_class && !mono_verifier_class_is_valid_generic_instantiation (class))
4928 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Invalid generic instantiation"));
4929
4930 goto leave;
4931
4932 leave:
4933 /* Because of the double-checking locking pattern */
4934 mono_memory_barrier ();
4935 class->inited = 1;
4936 class->init_pending = 0;
4937
4938 mono_loader_unlock ();
4939
4940 if (mono_debugger_class_init_func)
4941 mono_debugger_class_init_func (class);
4942
4943 return class->exception_type == MONO_EXCEPTION_NONE;
4944 }
4945
4946 /*
4947 * mono_class_has_finalizer:
4948 *
4949 * Return whenever KLASS has a finalizer, initializing klass->has_finalizer in the
4950 * process.
4951 */
4952 gboolean
4953 mono_class_has_finalizer (MonoClass *klass)
4954 {
4955 if (!klass->has_finalize_inited) {
4956 MonoClass *class = klass;
4957
4958 mono_loader_lock ();
4959
4960 /* Interfaces and valuetypes are not supposed to have finalizers */
4961 if (!(MONO_CLASS_IS_INTERFACE (class) || class->valuetype)) {
4962 MonoMethod *cmethod = NULL;
4963
4964 if (class->parent && class->parent->has_finalize) {
4965 class->has_finalize = 1;
4966 } else {
4967 if (class->parent) {
4968 /*
4969 * Can't search in metadata for a method named Finalize, because that
4970 * ignores overrides.
4971 */
4972 mono_class_setup_vtable (class);
4973 if (class->exception_type || mono_loader_get_last_error ())
4974 goto leave;
4975 cmethod = class->vtable [finalize_slot];
4976 }
4977
4978 if (cmethod) {
4979 g_assert (class->vtable_size > finalize_slot);
4980
4981 class->has_finalize = 0;
4982 if (class->parent) {
4983 if (cmethod->is_inflated)
4984 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
4985 if (cmethod != default_finalize) {
4986 class->has_finalize = 1;
4987 }
4988 }
4989 }
4990 }
4991 }
4992
4993 mono_memory_barrier ();
4994 klass->has_finalize_inited = TRUE;
4995
4996 mono_loader_unlock ();
4997 }
4998
4999 return klass->has_finalize;
5000
5001 leave:
5002 mono_loader_unlock ();
5003 return FALSE;
5004 }
5005
5006 gboolean
5007 mono_is_corlib_image (MonoImage *image)
5008 {
5009 /* FIXME: allow the dynamic case for our compilers and with full trust */
5010 if (image->dynamic)
5011 return image->assembly && !strcmp (image->assembly->aname.name, "mscorlib");
5012 else
5013 return image == mono_defaults.corlib;
5014 }
5015
5016 /*
5017 * LOCKING: this assumes the loader lock is held
5018 */
5019 void
5020 mono_class_setup_mono_type (MonoClass *class)
5021 {
5022 const char *name = class->name;
5023 const char *nspace = class->name_space;
5024 gboolean is_corlib = mono_is_corlib_image (class->image);
5025
5026 class->this_arg.byref = 1;
5027 class->this_arg.data.klass = class;
5028 class->this_arg.type = MONO_TYPE_CLASS;
5029 class->byval_arg.data.klass = class;
5030 class->byval_arg.type = MONO_TYPE_CLASS;
5031
5032 if (is_corlib && !strcmp (nspace, "System")) {
5033 if (!strcmp (name, "ValueType")) {
5034 /*
5035 * do not set the valuetype bit for System.ValueType.
5036 * class->valuetype = 1;
5037 */
5038 class->blittable = TRUE;
5039 } else if (!strcmp (name, "Enum")) {
5040 /*
5041 * do not set the valuetype bit for System.Enum.
5042 * class->valuetype = 1;
5043 */
5044 class->valuetype = 0;
5045 class->enumtype = 0;
5046 } else if (!strcmp (name, "Object")) {
5047 class->this_arg.type = class->byval_arg.type = MONO_TYPE_OBJECT;
5048 } else if (!strcmp (name, "String")) {
5049 class->this_arg.type = class->byval_arg.type = MONO_TYPE_STRING;
5050 } else if (!strcmp (name, "TypedReference")) {
5051 class->this_arg.type = class->byval_arg.type = MONO_TYPE_TYPEDBYREF;
5052 }
5053 }
5054
5055 if (class->valuetype) {
5056 int t = MONO_TYPE_VALUETYPE;
5057
5058 if (is_corlib && !strcmp (nspace, "System")) {
5059 switch (*name) {
5060 case 'B':
5061 if (!strcmp (name, "Boolean")) {
5062 t = MONO_TYPE_BOOLEAN;
5063 } else if (!strcmp(name, "Byte")) {
5064 t = MONO_TYPE_U1;
5065 class->blittable = TRUE;
5066 }
5067 break;
5068 case 'C':
5069 if (!strcmp (name, "Char")) {
5070 t = MONO_TYPE_CHAR;
5071 }
5072 break;
5073 case 'D':
5074 if (!strcmp (name, "Double")) {
5075 t = MONO_TYPE_R8;
5076 class->blittable = TRUE;
5077 }
5078 break;
5079 case 'I':
5080 if (!strcmp (name, "Int32")) {
5081 t = MONO_TYPE_I4;
5082 class->blittable = TRUE;
5083 } else if (!strcmp(name, "Int16")) {
5084 t = MONO_TYPE_I2;
5085 class->blittable = TRUE;
5086 } else if (!strcmp(name, "Int64")) {
5087 t = MONO_TYPE_I8;
5088 class->blittable = TRUE;
5089 } else if (!strcmp(name, "IntPtr")) {
5090 t = MONO_TYPE_I;
5091 class->blittable = TRUE;
5092 }
5093 break;
5094 case 'S':
5095 if (!strcmp (name, "Single")) {
5096 t = MONO_TYPE_R4;
5097 class->blittable = TRUE;
5098 } else if (!strcmp(name, "SByte")) {
5099 t = MONO_TYPE_I1;
5100 class->blittable = TRUE;
5101 }
5102 break;
5103 case 'U':
5104 if (!strcmp (name, "UInt32")) {
5105 t = MONO_TYPE_U4;
5106 class->blittable = TRUE;
5107 } else if (!strcmp(name, "UInt16")) {
5108 t = MONO_TYPE_U2;
5109 class->blittable = TRUE;
5110 } else if (!strcmp(name, "UInt64")) {
5111 t = MONO_TYPE_U8;
5112 class->blittable = TRUE;
5113 } else if (!strcmp(name, "UIntPtr")) {
5114 t = MONO_TYPE_U;
5115 class->blittable = TRUE;
5116 }
5117 break;
5118 case 'T':
5119 if (!strcmp (name, "TypedReference")) {
5120 t = MONO_TYPE_TYPEDBYREF;
5121 class->blittable = TRUE;
5122 }
5123 break;
5124 case 'V':
5125 if (!strcmp (name, "Void")) {
5126 t = MONO_TYPE_VOID;
5127 }
5128 break;
5129 default:
5130 break;
5131 }
5132 }
5133 class->this_arg.type = class->byval_arg.type = t;
5134 }
5135
5136 if (MONO_CLASS_IS_INTERFACE (class))
5137 class->interface_id = mono_get_unique_iid (class);
5138
5139 }
5140
5141 /*
5142 * COM initialization (using mono_init_com_types) is delayed until needed.
5143 * However when a [ComImport] attribute is present on a type it will trigger
5144 * the initialization. This is not a problem unless the BCL being executed
5145 * lacks the types that COM depends on (e.g. Variant on Silverlight).
5146 */
5147 static void
5148 init_com_from_comimport (MonoClass *class)
5149 {
5150 /* we don't always allow COM initialization under the CoreCLR (e.g. Moonlight does not require it) */
5151 if ((mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)) {
5152 /* but some other CoreCLR user could requires it for their platform (i.e. trusted) code */
5153 if (!mono_security_core_clr_determine_platform_image (class->image)) {
5154 /* but it can not be made available for application (i.e. user code) since all COM calls
5155 * are considered native calls. In this case we fail with a TypeLoadException (just like
5156 * Silverlight 2 does */
5157 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
5158 return;
5159 }
5160 }
5161 /* FIXME : we should add an extra checks to ensure COM can be initialized properly before continuing */
5162 mono_init_com_types ();
5163 }
5164
5165 /*
5166 * LOCKING: this assumes the loader lock is held
5167 */
5168 void
5169 mono_class_setup_parent (MonoClass *class, MonoClass *parent)
5170 {
5171 gboolean system_namespace;
5172 gboolean is_corlib = mono_is_corlib_image (class->image);
5173
5174 system_namespace = !strcmp (class->name_space, "System") && is_corlib;
5175
5176 /* if root of the hierarchy */
5177 if (system_namespace && !strcmp (class->name, "Object")) {
5178 class->parent = NULL;
5179 class->instance_size = sizeof (MonoObject);
5180 return;
5181 }
5182 if (!strcmp (class->name, "<Module>")) {
5183 class->parent = NULL;
5184 class->instance_size = 0;
5185 return;
5186 }
5187
5188 if (!MONO_CLASS_IS_INTERFACE (class)) {
5189 /* Imported COM Objects always derive from __ComObject. */
5190 if (MONO_CLASS_IS_IMPORT (class)) {
5191 init_com_from_comimport (class);
5192 if (parent == mono_defaults.object_class)
5193 parent = mono_defaults.com_object_class;
5194 }
5195 if (!parent) {
5196 /* set the parent to something useful and safe, but mark the type as broken */
5197 parent = mono_defaults.object_class;
5198 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
5199 }
5200
5201 class->parent = parent;
5202
5203 if (parent->generic_class && !parent->name) {
5204 /*
5205 * If the parent is a generic instance, we may get
5206 * called before it is fully initialized, especially
5207 * before it has its name.
5208 */
5209 return;
5210 }
5211
5212 class->marshalbyref = parent->marshalbyref;
5213 class->contextbound = parent->contextbound;
5214 class->delegate = parent->delegate;
5215 if (MONO_CLASS_IS_IMPORT (class))
5216 class->is_com_object = 1;
5217 else
5218 class->is_com_object = parent->is_com_object;
5219
5220 if (system_namespace) {
5221 if (*class->name == 'M' && !strcmp (class->name, "MarshalByRefObject"))
5222 class->marshalbyref = 1;
5223
5224 if (*class->name == 'C' && !strcmp (class->name, "ContextBoundObject"))
5225 class->contextbound = 1;
5226
5227 if (*class->name == 'D' && !strcmp (class->name, "Delegate"))
5228 class->delegate = 1;
5229 }
5230
5231 if (class->parent->enumtype || (mono_is_corlib_image (class->parent->image) && (strcmp (class->parent->name, "ValueType") == 0) &&
5232 (strcmp (class->parent->name_space, "System") == 0)))
5233 class->valuetype = 1;
5234 if (mono_is_corlib_image (class->parent->image) && ((strcmp (class->parent->name, "Enum") == 0) && (strcmp (class->parent->name_space, "System") == 0))) {
5235 class->valuetype = class->enumtype = 1;
5236 }
5237 /*class->enumtype = class->parent->enumtype; */
5238 mono_class_setup_supertypes (class);
5239 } else {
5240 /* initialize com types if COM interfaces are present */
5241 if (MONO_CLASS_IS_IMPORT (class))
5242 init_com_from_comimport (class);
5243 class->parent = NULL;
5244 }
5245
5246 }
5247
5248 /*
5249 * mono_class_setup_supertypes:
5250 * @class: a class
5251 *
5252 * Build the data structure needed to make fast type checks work.
5253 * This currently sets two fields in @class:
5254 * - idepth: distance between @class and System.Object in the type
5255 * hierarchy + 1
5256 * - supertypes: array of classes: each element has a class in the hierarchy
5257 * starting from @class up to System.Object
5258 *
5259 * LOCKING: this assumes the loader lock is held
5260 */
5261 void
5262 mono_class_setup_supertypes (MonoClass *class)
5263 {
5264 int ms;
5265
5266 if (class->supertypes)
5267 return;
5268
5269 if (class->parent && !class->parent->supertypes)
5270 mono_class_setup_supertypes (class->parent);
5271 if (class->parent)
5272 class->idepth = class->parent->idepth + 1;
5273 else
5274 class->idepth = 1;
5275
5276 ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, class->idepth);
5277 class->supertypes = mono_class_alloc0 (class, sizeof (MonoClass *) * ms);
5278
5279 if (class->parent) {
5280 class->supertypes [class->idepth - 1] = class;
5281 memcpy (class->supertypes, class->parent->supertypes, class->parent->idepth * sizeof (gpointer));
5282 } else {
5283 class->supertypes [0] = class;
5284 }
5285 }
5286
5287 /**
5288 * mono_class_create_from_typedef:
5289 * @image: image where the token is valid
5290 * @type_token: typedef token
5291 *
5292 * Create the MonoClass* representing the specified type token.
5293 * @type_token must be a TypeDef token.
5294 *
5295 * FIXME: don't return NULL on failure, just the the caller figure it out.
5296 */
5297 static MonoClass *
5298 mono_class_create_from_typedef (MonoImage *image, guint32 type_token)
5299 {
5300 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
5301 MonoClass *class, *parent = NULL;
5302 guint32 cols [MONO_TYPEDEF_SIZE];
5303 guint32 cols_next [MONO_TYPEDEF_SIZE];
5304 guint tidx = mono_metadata_token_index (type_token);
5305 MonoGenericContext *context = NULL;
5306 const char *name, *nspace;
5307 guint icount = 0;
5308 MonoClass **interfaces;
5309 guint32 field_last, method_last;
5310 guint32 nesting_tokeen;
5311
5312 if (mono_metadata_token_table (type_token) != MONO_TABLE_TYPEDEF || tidx > tt->rows)
5313 return NULL;
5314
5315 mono_loader_lock ();
5316
5317 if ((class = mono_internal_hash_table_lookup (&image->class_cache, GUINT_TO_POINTER (type_token)))) {
5318 mono_loader_unlock ();
5319 return class;
5320 }
5321
5322 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
5323
5324 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
5325 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
5326
5327 class = mono_image_alloc0 (image, sizeof (MonoClass));
5328
5329 class->name = name;
5330 class->name_space = nspace;
5331
5332 mono_profiler_class_event (class, MONO_PROFILE_START_LOAD);
5333
5334 class->image = image;
5335 class->type_token = type_token;
5336 class->flags = cols [MONO_TYPEDEF_FLAGS];
5337
5338 mono_internal_hash_table_insert (&image->class_cache, GUINT_TO_POINTER (type_token), class);
5339
5340 classes_size += sizeof (MonoClass);
5341
5342 /*
5343 * Check whether we're a generic type definition.
5344 */
5345 class->generic_container = mono_metadata_load_generic_params (image, class->type_token, NULL);
5346 if (class->generic_container) {
5347 class->is_generic = 1;
5348 class->generic_container->owner.klass = class;
5349 context = &class->generic_container->context;
5350 }
5351
5352 if (cols [MONO_TYPEDEF_EXTENDS]) {
5353 MonoClass *tmp;
5354 guint32 parent_token = mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]);
5355
5356 if (mono_metadata_token_table (parent_token) == MONO_TABLE_TYPESPEC) {
5357 /*WARNING: this must satisfy mono_metadata_type_hash*/
5358 class->this_arg.byref = 1;
5359 class->this_arg.data.klass = class;
5360 class->this_arg.type = MONO_TYPE_CLASS;
5361 class->byval_arg.data.klass = class;
5362 class->byval_arg.type = MONO_TYPE_CLASS;
5363 }
5364 parent = mono_class_get_full (image, parent_token, context);
5365
5366 if (parent == NULL){
5367 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not load parent type"));
5368 mono_loader_clear_error ();
5369 goto parent_failure;
5370 }
5371
5372 for (tmp = parent; tmp; tmp = tmp->parent) {
5373 if (tmp == class) {
5374 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cycle found while resolving parent"));
5375 goto parent_failure;
5376 }
5377 if (class->generic_container && tmp->generic_class && tmp->generic_class->container_class == class) {
5378 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Parent extends generic instance of this type"));
5379 goto parent_failure;
5380 }
5381 }
5382 }
5383
5384 mono_class_setup_parent (class, parent);
5385
5386 /* uses ->valuetype, which is initialized by mono_class_setup_parent above */
5387 mono_class_setup_mono_type (class);
5388
5389 /*
5390 * This might access class->byval_arg for recursion generated by generic constraints,
5391 * so it has to come after setup_mono_type ().
5392 */
5393 if ((nesting_tokeen = mono_metadata_nested_in_typedef (image, type_token))) {
5394 class->nested_in = mono_class_create_from_typedef (image, nesting_tokeen);
5395 if (!class->nested_in) {
5396 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not load nestedin type"));
5397 mono_loader_unlock ();
5398 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5399 return NULL;
5400 }
5401 }
5402
5403 if ((class->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
5404 class->unicode = 1;
5405
5406 #ifdef HOST_WIN32
5407 if ((class->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
5408 class->unicode = 1;
5409 #endif
5410
5411 class->cast_class = class->element_class = class;
5412
5413 if (!class->enumtype) {
5414 if (!mono_metadata_interfaces_from_typedef_full (
5415 image, type_token, &interfaces, &icount, FALSE, context)){
5416 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not load interfaces"));
5417 mono_loader_unlock ();
5418 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5419 return NULL;
5420 }
5421
5422 class->interfaces = interfaces;
5423 class->interface_count = icount;
5424 class->interfaces_inited = 1;
5425 }
5426
5427 /*g_print ("Load class %s\n", name);*/
5428
5429 /*
5430 * Compute the field and method lists
5431 */
5432 class->field.first = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
5433 class->method.first = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
5434
5435 if (tt->rows > tidx){
5436 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
5437 field_last = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
5438 method_last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
5439 } else {
5440 field_last = image->tables [MONO_TABLE_FIELD].rows;
5441 method_last = image->tables [MONO_TABLE_METHOD].rows;
5442 }
5443
5444 if (cols [MONO_TYPEDEF_FIELD_LIST] &&
5445 cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
5446 class->field.count = field_last - class->field.first;
5447 else
5448 class->field.count = 0;
5449
5450 if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
5451 class->method.count = method_last - class->method.first;
5452 else
5453 class->method.count = 0;
5454
5455 /* reserve space to store vector pointer in arrays */
5456 if (mono_is_corlib_image (image) && !strcmp (nspace, "System") && !strcmp (name, "Array")) {
5457 class->instance_size += 2 * sizeof (gpointer);
5458 g_assert (class->field.count == 0);
5459 }
5460
5461 if (class->enumtype) {
5462 MonoType *enum_basetype = mono_class_find_enum_basetype (class);
5463 if (!enum_basetype) {
5464 /*set it to a default value as the whole runtime can't handle this to be null*/
5465 class->cast_class = class->element_class = mono_defaults.int32_class;
5466 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
5467 mono_loader_unlock ();
5468 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5469 return NULL;
5470 }
5471 class->cast_class = class->element_class = mono_class_from_mono_type (enum_basetype);
5472 }
5473
5474 /*
5475 * If we're a generic type definition, load the constraints.
5476 * We must do this after the class has been constructed to make certain recursive scenarios
5477 * work.
5478 */
5479 if (class->generic_container && !mono_metadata_load_generic_param_constraints_full (image, type_token, class->generic_container)){
5480 char *class_name = g_strdup_printf("%s.%s", class->name_space, class->name);
5481 char *error = concat_two_strings_with_zero (class->image, class_name, class->image->assembly_name);
5482 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, error);
5483 g_free (class_name);
5484 mono_loader_unlock ();
5485 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5486 return NULL;
5487 }
5488
5489 if (class->image->assembly_name && !strcmp (class->image->assembly_name, "Mono.Simd") && !strcmp (nspace, "Mono.Simd")) {
5490 if (!strncmp (name, "Vector", 6))
5491 class->simd_type = !strcmp (name + 6, "2d") || !strcmp (name + 6, "2ul") || !strcmp (name + 6, "2l") || !strcmp (name + 6, "4f") || !strcmp (name + 6, "4ui") || !strcmp (name + 6, "4i") || !strcmp (name + 6, "8s") || !strcmp (name + 6, "8us") || !strcmp (name + 6, "16b") || !strcmp (name + 6, "16sb");
5492 }
5493
5494 mono_loader_unlock ();
5495
5496 mono_profiler_class_loaded (class, MONO_PROFILE_OK);
5497
5498 return class;
5499
5500 parent_failure:
5501 mono_class_setup_mono_type (class);
5502 mono_loader_unlock ();
5503 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5504 return NULL;
5505
5506 }
5507
5508 /** is klass Nullable<T>? */
5509 gboolean
5510 mono_class_is_nullable (MonoClass *klass)
5511 {
5512 return klass->generic_class != NULL &&
5513 klass->generic_class->container_class == mono_defaults.generic_nullable_class;
5514 }
5515
5516
5517 /** if klass is T? return T */
5518 MonoClass*
5519 mono_class_get_nullable_param (MonoClass *klass)
5520 {
5521 g_assert (mono_class_is_nullable (klass));
5522 return mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
5523 }
5524
5525 /*
5526 * Create the `MonoClass' for an instantiation of a generic type.
5527 * We only do this if we actually need it.
5528 */
5529 MonoClass*
5530 mono_generic_class_get_class (MonoGenericClass *gclass)
5531 {
5532 MonoClass *klass, *gklass;
5533
5534 if (gclass->cached_class)
5535 return gclass->cached_class;
5536
5537 mono_loader_lock ();
5538 if (gclass->cached_class) {
5539 mono_loader_unlock ();
5540 return gclass->cached_class;
5541 }
5542
5543 klass = mono_image_set_alloc0 (gclass->owner, sizeof (MonoClass));
5544
5545 gklass = gclass->container_class;
5546
5547 if (gklass->nested_in) {
5548 /* The nested_in type should not be inflated since it's possible to produce a nested type with less generic arguments*/
5549 klass->nested_in = gklass->nested_in;
5550 }
5551
5552 klass->name = gklass->name;
5553 klass->name_space = gklass->name_space;
5554
5555 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5556
5557 klass->image = gklass->image;
5558 klass->flags = gklass->flags;
5559 klass->type_token = gklass->type_token;
5560 klass->field.count = gklass->field.count;
5561
5562 klass->is_inflated = 1;
5563 klass->generic_class = gclass;
5564
5565 klass->this_arg.type = klass->byval_arg.type = MONO_TYPE_GENERICINST;
5566 klass->this_arg.data.generic_class = klass->byval_arg.data.generic_class = gclass;
5567 klass->this_arg.byref = TRUE;
5568 klass->enumtype = gklass->enumtype;
5569 klass->valuetype = gklass->valuetype;
5570
5571 klass->cast_class = klass->element_class = klass;
5572
5573 if (mono_class_is_nullable (klass))
5574 klass->cast_class = klass->element_class = mono_class_get_nullable_param (klass);
5575
5576 /*
5577 * We're not interested in the nested classes of a generic instance.
5578 * We use the generic type definition to look for nested classes.
5579 */
5580
5581 if (gklass->parent) {
5582 MonoError error;
5583 klass->parent = mono_class_inflate_generic_class_checked (gklass->parent, mono_generic_class_get_context (gclass), &error);
5584 if (!mono_error_ok (&error)) {
5585 /*Set parent to something safe as the runtime doesn't handle well this kind of failure.*/
5586 klass->parent = mono_defaults.object_class;
5587 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5588 mono_error_cleanup (&error);
5589 }
5590 }
5591
5592 if (klass->parent)
5593 mono_class_setup_parent (klass, klass->parent);
5594
5595 if (klass->enumtype) {
5596 klass->cast_class = gklass->cast_class;
5597 klass->element_class = gklass->element_class;
5598 }
5599
5600 if (gclass->is_dynamic) {
5601 klass->inited = 1;
5602
5603 mono_class_setup_supertypes (klass);
5604
5605 if (klass->enumtype) {
5606 /*
5607 * For enums, gklass->fields might not been set, but instance_size etc. is
5608 * already set in mono_reflection_create_internal_class (). For non-enums,
5609 * these will be computed normally in mono_class_layout_fields ().
5610 */
5611 klass->instance_size = gklass->instance_size;
5612 klass->sizes.class_size = gklass->sizes.class_size;
5613 klass->size_inited = 1;
5614 }
5615 }
5616
5617 mono_memory_barrier ();
5618 gclass->cached_class = klass;
5619
5620 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5621
5622 inflated_classes ++;
5623 inflated_classes_size += sizeof (MonoClass);
5624
5625 mono_loader_unlock ();
5626
5627 return klass;
5628 }
5629
5630 static MonoClass*
5631 make_generic_param_class (MonoGenericParam *param, MonoImage *image, gboolean is_mvar, MonoGenericParamInfo *pinfo)
5632 {
5633 MonoClass *klass, **ptr;
5634 int count, pos, i;
5635 MonoGenericContainer *container = mono_generic_param_owner (param);
5636
5637 if (!image)
5638 /* FIXME: */
5639 image = mono_defaults.corlib;
5640
5641 klass = mono_image_alloc0 (image, sizeof (MonoClass));
5642 classes_size += sizeof (MonoClass);
5643
5644 if (pinfo) {
5645 klass->name = pinfo->name;
5646 } else {
5647 int n = mono_generic_param_num (param);
5648 klass->name = mono_image_alloc0 (image, 16);
5649 sprintf ((char*)klass->name, "%d", n);
5650 }
5651
5652 if (container) {
5653 if (is_mvar) {
5654 MonoMethod *omethod = container->owner.method;
5655 klass->name_space = (omethod && omethod->klass) ? omethod->klass->name_space : "";
5656 } else {
5657 MonoClass *oklass = container->owner.klass;
5658 klass->name_space = oklass ? oklass->name_space : "";
5659 }
5660 } else {
5661 klass->name_space = "";
5662 }
5663
5664 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5665
5666 count = 0;
5667 if (pinfo)
5668 for (ptr = pinfo->constraints; ptr && *ptr; ptr++, count++)
5669 ;
5670
5671 pos = 0;
5672 if ((count > 0) && !MONO_CLASS_IS_INTERFACE (pinfo->constraints [0])) {
5673 klass->parent = pinfo->constraints [0];
5674 pos++;
5675 } else if (pinfo && pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT)
5676 klass->parent = mono_class_from_name (mono_defaults.corlib, "System", "ValueType");
5677 else
5678 klass->parent = mono_defaults.object_class;
5679
5680
5681 if (count - pos > 0) {
5682 klass->interface_count = count - pos;
5683 klass->interfaces = mono_image_alloc0 (image, sizeof (MonoClass *) * (count - pos));
5684 klass->interfaces_inited = TRUE;
5685 for (i = pos; i < count; i++)
5686 klass->interfaces [i - pos] = pinfo->constraints [i];
5687 }
5688
5689 klass->image = image;
5690
5691 klass->inited = TRUE;
5692 klass->cast_class = klass->element_class = klass;
5693 klass->flags = TYPE_ATTRIBUTE_PUBLIC;
5694
5695 klass->this_arg.type = klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
5696 klass->this_arg.data.generic_param = klass->byval_arg.data.generic_param = param;
5697 klass->this_arg.byref = TRUE;
5698
5699 /* We don't use type_token for VAR since only classes can use it (not arrays, pointer, VARs, etc) */
5700 klass->sizes.generic_param_token = pinfo ? pinfo->token : 0;
5701
5702 /*Init these fields to sane values*/
5703 klass->min_align = 1;
5704 klass->instance_size = sizeof (gpointer);
5705 klass->size_inited = 1;
5706
5707 mono_class_setup_supertypes (klass);
5708
5709 if (count - pos > 0) {
5710 mono_class_setup_vtable (klass->parent);
5711 if (klass->parent->exception_type)
5712 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Failed to setup parent interfaces"));
5713 else
5714 setup_interface_offsets (klass, klass->parent->vtable_size);
5715 }
5716
5717 return klass;
5718 }
5719
5720 #define FAST_CACHE_SIZE 16
5721
5722 static MonoClass *
5723 get_anon_gparam_class (MonoGenericParam *param, gboolean is_mvar)
5724 {
5725 int n = mono_generic_param_num (param);
5726 MonoImage *image = param->image;
5727 GHashTable *ht;
5728
5729 g_assert (image);
5730
5731 if (n < FAST_CACHE_SIZE) {
5732 if (is_mvar)
5733 return image->mvar_cache_fast ? image->mvar_cache_fast [n] : NULL;
5734 else
5735 return image->var_cache_fast ? image->var_cache_fast [n] : NULL;
5736 } else {
5737 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
5738 return ht ? g_hash_table_lookup (ht, GINT_TO_POINTER (n)) : NULL;
5739 }
5740 }
5741
5742 /*
5743 * LOCKING: Acquires the loader lock.
5744 */
5745 static void
5746 set_anon_gparam_class (MonoGenericParam *param, gboolean is_mvar, MonoClass *klass)
5747 {
5748 int n = mono_generic_param_num (param);
5749 MonoImage *image = param->image;
5750 GHashTable *ht;
5751
5752 g_assert (image);
5753
5754 if (n < FAST_CACHE_SIZE) {
5755 if (is_mvar) {
5756 /* No locking needed */
5757 if (!image->mvar_cache_fast)
5758 image->mvar_cache_fast = mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
5759 image->mvar_cache_fast [n] = klass;
5760 } else {
5761 if (!image->var_cache_fast)
5762 image->var_cache_fast = mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
5763 image->var_cache_fast [n] = klass;
5764 }
5765 return;
5766 }
5767 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
5768 if (!ht) {
5769 mono_loader_lock ();
5770 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
5771 if (!ht) {
5772 ht = g_hash_table_new (NULL, NULL);
5773 mono_memory_barrier ();
5774 if (is_mvar)
5775 image->mvar_cache_slow = ht;
5776 else
5777 image->var_cache_slow = ht;
5778 }
5779 mono_loader_unlock ();
5780 }
5781
5782 g_hash_table_insert (ht, GINT_TO_POINTER (n), klass);
5783 }
5784
5785 /*
5786 * LOCKING: Acquires the loader lock.
5787 */
5788 MonoClass *
5789 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *image, gboolean is_mvar)
5790 {
5791 MonoGenericContainer *container = mono_generic_param_owner (param);
5792 MonoGenericParamInfo *pinfo;
5793 MonoClass *klass;
5794
5795 mono_loader_lock ();
5796
5797 if (container) {
5798 pinfo = mono_generic_param_info (param);
5799 if (pinfo->pklass) {
5800 mono_loader_unlock ();
5801 return pinfo->pklass;
5802 }
5803 } else {
5804 pinfo = NULL;
5805 image = NULL;
5806
5807 klass = get_anon_gparam_class (param, is_mvar);
5808 if (klass) {
5809 mono_loader_unlock ();
5810 return klass;
5811 }
5812 }
5813
5814 if (!image && container) {
5815 if (is_mvar) {
5816 MonoMethod *method = container->owner.method;
5817 image = (method && method->klass) ? method->klass->image : NULL;
5818 } else {
5819 MonoClass *klass = container->owner.klass;
5820 // FIXME: 'klass' should not be null
5821 // But, monodis creates GenericContainers without associating a owner to it
5822 image = klass ? klass->image : NULL;
5823 }
5824 }
5825
5826 klass = make_generic_param_class (param, image, is_mvar, pinfo);
5827
5828 mono_memory_barrier ();
5829
5830 if (container)
5831 pinfo->pklass = klass;
5832 else
5833 set_anon_gparam_class (param, is_mvar, klass);
5834
5835 mono_loader_unlock ();
5836
5837 /* FIXME: Should this go inside 'make_generic_param_klass'? */
5838 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5839
5840 return klass;
5841 }
5842
5843 MonoClass *
5844 mono_ptr_class_get (MonoType *type)
5845 {
5846 MonoClass *result;
5847 MonoClass *el_class;
5848 MonoImage *image;
5849 char *name;
5850
5851 el_class = mono_class_from_mono_type (type);
5852 image = el_class->image;
5853
5854 mono_loader_lock ();
5855
5856 if (!image->ptr_cache)
5857 image->ptr_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
5858
5859 if ((result = g_hash_table_lookup (image->ptr_cache, el_class))) {
5860 mono_loader_unlock ();
5861 return result;
5862 }
5863 result = mono_image_alloc0 (image, sizeof (MonoClass));
5864
5865 classes_size += sizeof (MonoClass);
5866
5867 result->parent = NULL; /* no parent for PTR types */
5868 result->name_space = el_class->name_space;
5869 name = g_strdup_printf ("%s*", el_class->name);
5870 result->name = mono_image_strdup (image, name);
5871 g_free (name);
5872
5873 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
5874
5875 result->image = el_class->image;
5876 result->inited = TRUE;
5877 result->flags = TYPE_ATTRIBUTE_CLASS | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
5878 /* Can pointers get boxed? */
5879 result->instance_size = sizeof (gpointer);
5880 result->cast_class = result->element_class = el_class;
5881 result->blittable = TRUE;
5882
5883 result->this_arg.type = result->byval_arg.type = MONO_TYPE_PTR;
5884 result->this_arg.data.type = result->byval_arg.data.type = &result->element_class->byval_arg;
5885 result->this_arg.byref = TRUE;
5886
5887 mono_class_setup_supertypes (result);
5888
5889 g_hash_table_insert (image->ptr_cache, el_class, result);
5890
5891 mono_loader_unlock ();
5892
5893 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
5894
5895 return result;
5896 }
5897
5898 static MonoClass *
5899 mono_fnptr_class_get (MonoMethodSignature *sig)
5900 {
5901 MonoClass *result;
5902 static GHashTable *ptr_hash = NULL;
5903
5904 /* FIXME: These should be allocate from a mempool as well, but which one ? */
5905
5906 mono_loader_lock ();
5907
5908 if (!ptr_hash)
5909 ptr_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
5910
5911 if ((result = g_hash_table_lookup (ptr_hash, sig))) {
5912 mono_loader_unlock ();
5913 return result;
5914 }
5915 result = g_new0 (MonoClass, 1);
5916
5917 result->parent = NULL; /* no parent for PTR types */
5918 result->name_space = "System";
5919 result->name = "MonoFNPtrFakeClass";
5920
5921 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
5922
5923 result->image = mono_defaults.corlib; /* need to fix... */
5924 result->inited = TRUE;
5925 result->flags = TYPE_ATTRIBUTE_CLASS; /* | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK); */
5926 /* Can pointers get boxed? */
5927 result->instance_size = sizeof (gpointer);
5928 result->cast_class = result->element_class = result;
5929 result->blittable = TRUE;
5930
5931 result->this_arg.type = result->byval_arg.type = MONO_TYPE_FNPTR;
5932 result->this_arg.data.method = result->byval_arg.data.method = sig;
5933 result->this_arg.byref = TRUE;
5934 result->blittable = TRUE;
5935
5936 mono_class_setup_supertypes (result);
5937
5938 g_hash_table_insert (ptr_hash, sig, result);
5939
5940 mono_loader_unlock ();
5941
5942 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
5943
5944 return result;
5945 }
5946
5947 MonoClass *
5948 mono_class_from_mono_type (MonoType *type)
5949 {
5950 switch (type->type) {
5951 case MONO_TYPE_OBJECT:
5952 return type->data.klass? type->data.klass: mono_defaults.object_class;
5953 case MONO_TYPE_VOID:
5954 return type->data.klass? type->data.klass: mono_defaults.void_class;
5955 case MONO_TYPE_BOOLEAN:
5956 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
5957 case MONO_TYPE_CHAR:
5958 return type->data.klass? type->data.klass: mono_defaults.char_class;
5959 case MONO_TYPE_I1:
5960 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
5961 case MONO_TYPE_U1:
5962 return type->data.klass? type->data.klass: mono_defaults.byte_class;
5963 case MONO_TYPE_I2:
5964 return type->data.klass? type->data.klass: mono_defaults.int16_class;
5965 case MONO_TYPE_U2:
5966 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
5967 case MONO_TYPE_I4:
5968 return type->data.klass? type->data.klass: mono_defaults.int32_class;
5969 case MONO_TYPE_U4:
5970 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
5971 case MONO_TYPE_I:
5972 return type->data.klass? type->data.klass: mono_defaults.int_class;
5973 case MONO_TYPE_U:
5974 return type->data.klass? type->data.klass: mono_defaults.uint_class;
5975 case MONO_TYPE_I8:
5976 return type->data.klass? type->data.klass: mono_defaults.int64_class;
5977 case MONO_TYPE_U8:
5978 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
5979 case MONO_TYPE_R4:
5980 return type->data.klass? type->data.klass: mono_defaults.single_class;
5981 case MONO_TYPE_R8:
5982 return type->data.klass? type->data.klass: mono_defaults.double_class;
5983 case MONO_TYPE_STRING:
5984 return type->data.klass? type->data.klass: mono_defaults.string_class;
5985 case MONO_TYPE_TYPEDBYREF:
5986 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
5987 case MONO_TYPE_ARRAY:
5988 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
5989 case MONO_TYPE_PTR:
5990 return mono_ptr_class_get (type->data.type);
5991 case MONO_TYPE_FNPTR:
5992 return mono_fnptr_class_get (type->data.method);
5993 case MONO_TYPE_SZARRAY:
5994 return mono_array_class_get (type->data.klass, 1);
5995 case MONO_TYPE_CLASS:
5996 case MONO_TYPE_VALUETYPE:
5997 return type->data.klass;
5998 case MONO_TYPE_GENERICINST:
5999 return mono_generic_class_get_class (type->data.generic_class);
6000 case MONO_TYPE_VAR:
6001 return mono_class_from_generic_parameter (type->data.generic_param, NULL, FALSE);
6002 case MONO_TYPE_MVAR:
6003 return mono_class_from_generic_parameter (type->data.generic_param, NULL, TRUE);
6004 default:
6005 g_warning ("mono_class_from_mono_type: implement me 0x%02x\n", type->type);
6006 g_assert_not_reached ();
6007 }
6008
6009 return NULL;
6010 }
6011
6012 /**
6013 * mono_type_retrieve_from_typespec
6014 * @image: context where the image is created
6015 * @type_spec: typespec token
6016 * @context: the generic context used to evaluate generic instantiations in
6017 */
6018 static MonoType *
6019 mono_type_retrieve_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, gboolean *did_inflate, MonoError *error)
6020 {
6021 MonoType *t = mono_type_create_from_typespec (image, type_spec);
6022
6023 mono_error_init (error);
6024 *did_inflate = FALSE;
6025
6026 if (!t) {
6027 char *name = mono_class_name_from_token (image, type_spec);
6028 char *assembly = mono_assembly_name_from_token (image, type_spec);
6029 mono_error_set_type_load_name (error, name, assembly, "Could not resolve typespec token %08x", type_spec);
6030 return NULL;
6031 }
6032
6033 if (context && (context->class_inst || context->method_inst)) {
6034 MonoType *inflated = inflate_generic_type (NULL, t, context, error);
6035
6036 if (!mono_error_ok (error))
6037 return NULL;
6038
6039 if (inflated) {
6040 t = inflated;
6041 *did_inflate = TRUE;
6042 }
6043 }
6044 return t;
6045 }
6046
6047 /**
6048 * mono_class_create_from_typespec
6049 * @image: context where the image is created
6050 * @type_spec: typespec token
6051 * @context: the generic context used to evaluate generic instantiations in
6052 */
6053 static MonoClass *
6054 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, MonoError *error)
6055 {
6056 MonoClass *ret;
6057 gboolean inflated = FALSE;
6058 MonoType *t = mono_type_retrieve_from_typespec (image, type_spec, context, &inflated, error);
6059 if (!mono_error_ok (error))
6060 return NULL;
6061 ret = mono_class_from_mono_type (t);
6062 if (inflated)
6063 mono_metadata_free_type (t);
6064 return ret;
6065 }
6066
6067 /**
6068 * mono_bounded_array_class_get:
6069 * @element_class: element class
6070 * @rank: the dimension of the array class
6071 * @bounded: whenever the array has non-zero bounds
6072 *
6073 * Returns: a class object describing the array with element type @element_type and
6074 * dimension @rank.
6075 */
6076 MonoClass *
6077 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
6078 {
6079 MonoImage *image;
6080 MonoClass *class;
6081 MonoClass *parent = NULL;
6082 GSList *list, *rootlist = NULL;
6083 int nsize;
6084 char *name;
6085 gboolean corlib_type = FALSE;
6086
6087 g_assert (rank <= 255);
6088
6089 if (rank > 1)
6090 /* bounded only matters for one-dimensional arrays */
6091 bounded = FALSE;
6092
6093 image = eclass->image;
6094
6095 if (rank == 1 && !bounded) {
6096 /*
6097 * This case is very frequent not just during compilation because of calls
6098 * from mono_class_from_mono_type (), mono_array_new (),
6099 * Array:CreateInstance (), etc, so use a separate cache + a separate lock.
6100 */
6101 EnterCriticalSection (&image->szarray_cache_lock);
6102 if (!image->szarray_cache)
6103 image->szarray_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6104 class = g_hash_table_lookup (image->szarray_cache, eclass);
6105 LeaveCriticalSection (&image->szarray_cache_lock);
6106 if (class)
6107 return class;
6108
6109 mono_loader_lock ();
6110 } else {
6111 mono_loader_lock ();
6112
6113 if (!image->array_cache)
6114 image->array_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6115
6116 if ((rootlist = list = g_hash_table_lookup (image->array_cache, eclass))) {
6117 for (; list; list = list->next) {
6118 class = list->data;
6119 if ((class->rank == rank) && (class->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6120 mono_loader_unlock ();
6121 return class;
6122 }
6123 }
6124 }
6125 }
6126
6127 /* for the building corlib use System.Array from it */
6128 if (image->assembly && image->assembly->dynamic && image->assembly_name && strcmp (image->assembly_name, "mscorlib") == 0) {
6129 parent = mono_class_from_name (image, "System", "Array");
6130 corlib_type = TRUE;
6131 } else {
6132 parent = mono_defaults.array_class;
6133 if (!parent->inited)
6134 mono_class_init (parent);
6135 }
6136
6137 class = mono_image_alloc0 (image, sizeof (MonoClass));
6138
6139 class->image = image;
6140 class->name_space = eclass->name_space;
6141 nsize = strlen (eclass->name);
6142 name = g_malloc (nsize + 2 + rank + 1);
6143 memcpy (name, eclass->name, nsize);
6144 name [nsize] = '[';
6145 if (rank > 1)
6146 memset (name + nsize + 1, ',', rank - 1);
6147 if (bounded)
6148 name [nsize + rank] = '*';
6149 name [nsize + rank + bounded] = ']';
6150 name [nsize + rank + bounded + 1] = 0;
6151 class->name = mono_image_strdup (image, name);
6152 g_free (name);
6153
6154 mono_profiler_class_event (class, MONO_PROFILE_START_LOAD);
6155
6156 classes_size += sizeof (MonoClass);
6157
6158 class->type_token = 0;
6159 /* all arrays are marked serializable and sealed, bug #42779 */
6160 class->flags = TYPE_ATTRIBUTE_CLASS | TYPE_ATTRIBUTE_SERIALIZABLE | TYPE_ATTRIBUTE_SEALED | TYPE_ATTRIBUTE_PUBLIC;
6161 class->parent = parent;
6162 class->instance_size = mono_class_instance_size (class->parent);
6163
6164 if (eclass->byval_arg.type == MONO_TYPE_TYPEDBYREF || eclass->byval_arg.type == MONO_TYPE_VOID) {
6165 /*Arrays of those two types are invalid.*/
6166 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
6167 } else if (eclass->enumtype && !mono_class_enum_basetype (eclass)) {
6168 if (!eclass->ref_info_handle || eclass->wastypebuilder) {
6169 g_warning ("Only incomplete TypeBuilder objects are allowed to be an enum without base_type");
6170 g_assert (eclass->ref_info_handle && !eclass->wastypebuilder);
6171 }
6172 /* element_size -1 is ok as this is not an instantitable type*/
6173 class->sizes.element_size = -1;
6174 } else
6175 class->sizes.element_size = mono_class_array_element_size (eclass);
6176
6177 mono_class_setup_supertypes (class);
6178
6179 if (eclass->generic_class)
6180 mono_class_init (eclass);
6181 if (!eclass->size_inited)
6182 mono_class_setup_fields (eclass);
6183 if (eclass->exception_type) /*FIXME we fail the array type, but we have to let other fields be set.*/
6184 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
6185
6186 class->has_references = MONO_TYPE_IS_REFERENCE (&eclass->byval_arg) || eclass->has_references? TRUE: FALSE;
6187
6188 class->rank = rank;
6189
6190 if (eclass->enumtype)
6191 class->cast_class = eclass->element_class;
6192 else
6193 class->cast_class = eclass;
6194
6195 switch (class->cast_class->byval_arg.type) {
6196 case MONO_TYPE_I1:
6197 class->cast_class = mono_defaults.byte_class;
6198 break;
6199 case MONO_TYPE_U2:
6200 class->cast_class = mono_defaults.int16_class;
6201 break;
6202 case MONO_TYPE_U4:
6203 #if SIZEOF_VOID_P == 4
6204 case MONO_TYPE_I:
6205 case MONO_TYPE_U:
6206 #endif
6207 class->cast_class = mono_defaults.int32_class;
6208 break;
6209 case MONO_TYPE_U8:
6210 #if SIZEOF_VOID_P == 8
6211 case MONO_TYPE_I:
6212 case MONO_TYPE_U:
6213 #endif
6214 class->cast_class = mono_defaults.int64_class;
6215 break;
6216 }
6217
6218 class->element_class = eclass;
6219
6220 if ((rank > 1) || bounded) {
6221 MonoArrayType *at = mono_image_alloc0 (image, sizeof (MonoArrayType));
6222 class->byval_arg.type = MONO_TYPE_ARRAY;
6223 class->byval_arg.data.array = at;
6224 at->eklass = eclass;
6225 at->rank = rank;
6226 /* FIXME: complete.... */
6227 } else {
6228 class->byval_arg.type = MONO_TYPE_SZARRAY;
6229 class->byval_arg.data.klass = eclass;
6230 }
6231 class->this_arg = class->byval_arg;
6232 class->this_arg.byref = 1;
6233 if (corlib_type) {
6234 class->inited = 1;
6235 }
6236
6237 class->generic_container = eclass->generic_container;
6238
6239 if (rank == 1 && !bounded) {
6240 MonoClass *prev_class;
6241
6242 EnterCriticalSection (&image->szarray_cache_lock);
6243 prev_class = g_hash_table_lookup (image->szarray_cache, eclass);
6244 if (prev_class)
6245 /* Someone got in before us */
6246 class = prev_class;
6247 else
6248 g_hash_table_insert (image->szarray_cache, eclass, class);
6249 LeaveCriticalSection (&image->szarray_cache_lock);
6250 } else {
6251 list = g_slist_append (rootlist, class);
6252 g_hash_table_insert (image->array_cache, eclass, list);
6253 }
6254
6255 mono_loader_unlock ();
6256
6257 mono_profiler_class_loaded (class, MONO_PROFILE_OK);
6258
6259 return class;
6260 }
6261
6262 /**
6263 * mono_array_class_get:
6264 * @element_class: element class
6265 * @rank: the dimension of the array class
6266 *
6267 * Returns: a class object describing the array with element type @element_type and
6268 * dimension @rank.
6269 */
6270 MonoClass *
6271 mono_array_class_get (MonoClass *eclass, guint32 rank)
6272 {
6273 return mono_bounded_array_class_get (eclass, rank, FALSE);
6274 }
6275
6276 /**
6277 * mono_class_instance_size:
6278 * @klass: a class
6279 *
6280 * Returns: the size of an object instance
6281 */
6282 gint32
6283 mono_class_instance_size (MonoClass *klass)
6284 {
6285 if (!klass->size_inited)
6286 mono_class_init (klass);
6287
6288 return klass->instance_size;
6289 }
6290
6291 /**
6292 * mono_class_min_align:
6293 * @klass: a class
6294 *
6295 * Returns: minimm alignment requirements
6296 */
6297 gint32
6298 mono_class_min_align (MonoClass *klass)
6299 {
6300 if (!klass->size_inited)
6301 mono_class_init (klass);
6302
6303 return klass->min_align;
6304 }
6305
6306 /**
6307 * mono_class_value_size:
6308 * @klass: a class
6309 *
6310 * This function is used for value types, and return the
6311 * space and the alignment to store that kind of value object.
6312 *
6313 * Returns: the size of a value of kind @klass
6314 */
6315 gint32
6316 mono_class_value_size (MonoClass *klass, guint32 *align)
6317 {
6318 gint32 size;
6319
6320 /* fixme: check disable, because we still have external revereces to
6321 * mscorlib and Dummy Objects
6322 */
6323 /*g_assert (klass->valuetype);*/
6324
6325 size = mono_class_instance_size (klass) - sizeof (MonoObject);
6326
6327 if (align)
6328 *align = klass->min_align;
6329
6330 return size;
6331 }
6332
6333 /**
6334 * mono_class_data_size:
6335 * @klass: a class
6336 *
6337 * Returns: the size of the static class data
6338 */
6339 gint32
6340 mono_class_data_size (MonoClass *klass)
6341 {
6342 if (!klass->inited)
6343 mono_class_init (klass);
6344
6345 /* in arrays, sizes.class_size is unioned with element_size
6346 * and arrays have no static fields
6347 */
6348 if (klass->rank)
6349 return 0;
6350 return klass->sizes.class_size;
6351 }
6352
6353 /*
6354 * Auxiliary routine to mono_class_get_field
6355 *
6356 * Takes a field index instead of a field token.
6357 */
6358 static MonoClassField *
6359 mono_class_get_field_idx (MonoClass *class, int idx)
6360 {
6361 mono_class_setup_fields_locking (class);
6362 if (class->exception_type)
6363 return NULL;
6364
6365 while (class) {
6366 if (class->image->uncompressed_metadata) {
6367 /*
6368 * class->field.first points to the FieldPtr table, while idx points into the
6369 * Field table, so we have to do a search.
6370 */
6371 /*FIXME this is broken for types with multiple fields with the same name.*/
6372 const char *name = mono_metadata_string_heap (class->image, mono_metadata_decode_row_col (&class->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
6373 int i;
6374
6375 for (i = 0; i < class->field.count; ++i)
6376 if (mono_field_get_name (&class->fields [i]) == name)
6377 return &class->fields [i];
6378 g_assert_not_reached ();
6379 } else {
6380 if (class->field.count) {
6381 if ((idx >= class->field.first) && (idx < class->field.first + class->field.count)){
6382 return &class->fields [idx - class->field.first];
6383 }
6384 }
6385 }
6386 class = class->parent;
6387 }
6388 return NULL;
6389 }
6390
6391 /**
6392 * mono_class_get_field:
6393 * @class: the class to lookup the field.
6394 * @field_token: the field token
6395 *
6396 * Returns: A MonoClassField representing the type and offset of
6397 * the field, or a NULL value if the field does not belong to this
6398 * class.
6399 */
6400 MonoClassField *
6401 mono_class_get_field (MonoClass *class, guint32 field_token)
6402 {
6403 int idx = mono_metadata_token_index (field_token);
6404
6405 g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
6406
6407 return mono_class_get_field_idx (class, idx - 1);
6408 }
6409
6410 /**
6411 * mono_class_get_field_from_name:
6412 * @klass: the class to lookup the field.
6413 * @name: the field name
6414 *
6415 * Search the class @klass and it's parents for a field with the name @name.
6416 *
6417 * Returns: the MonoClassField pointer of the named field or NULL
6418 */
6419 MonoClassField *
6420 mono_class_get_field_from_name (MonoClass *klass, const char *name)
6421 {
6422 return mono_class_get_field_from_name_full (klass, name, NULL);
6423 }
6424
6425 /**
6426 * mono_class_get_field_from_name_full:
6427 * @klass: the class to lookup the field.
6428 * @name: the field name
6429 * @type: the type of the fields. This optional.
6430 *
6431 * Search the class @klass and it's parents for a field with the name @name and type @type.
6432 *
6433 * If @klass is an inflated generic type, the type comparison is done with the equivalent field
6434 * of its generic type definition.
6435 *
6436 * Returns: the MonoClassField pointer of the named field or NULL
6437 */
6438 MonoClassField *
6439 mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type)
6440 {
6441 int i;
6442
6443 mono_class_setup_fields_locking (klass);
6444 if (klass->exception_type)
6445 return NULL;
6446
6447 while (klass) {
6448 for (i = 0; i < klass->field.count; ++i) {
6449 MonoClassField *field = &klass->fields [i];
6450
6451 if (strcmp (name, mono_field_get_name (field)) != 0)
6452 continue;
6453
6454 if (type) {
6455 MonoType *field_type = mono_metadata_get_corresponding_field_from_generic_type_definition (field)->type;
6456 if (!mono_metadata_type_equal_full (type, field_type, TRUE))
6457 continue;
6458 }
6459 return field;
6460 }
6461 klass = klass->parent;
6462 }
6463 return NULL;
6464 }
6465
6466 /**
6467 * mono_class_get_field_token:
6468 * @field: the field we need the token of
6469 *
6470 * Get the token of a field. Note that the tokesn is only valid for the image
6471 * the field was loaded from. Don't use this function for fields in dynamic types.
6472 *
6473 * Returns: the token representing the field in the image it was loaded from.
6474 */
6475 guint32
6476 mono_class_get_field_token (MonoClassField *field)
6477 {
6478 MonoClass *klass = field->parent;
6479 int i;
6480
6481 mono_class_setup_fields_locking (klass);
6482
6483 while (klass) {
6484 if (!klass->fields)
6485 return 0;
6486 for (i = 0; i < klass->field.count; ++i) {
6487 if (&klass->fields [i] == field) {
6488 int idx = klass->field.first + i + 1;
6489
6490 if (klass->image->uncompressed_metadata)
6491 idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
6492 return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
6493 }
6494 }
6495 klass = klass->parent;
6496 }
6497
6498 g_assert_not_reached ();
6499 return 0;
6500 }
6501
6502 static int
6503 mono_field_get_index (MonoClassField *field)
6504 {
6505 int index = field - field->parent->fields;
6506
6507 g_assert (index >= 0 && index < field->parent->field.count);
6508
6509 return index;
6510 }
6511
6512 /*
6513 * mono_class_get_field_default_value:
6514 *
6515 * Return the default value of the field as a pointer into the metadata blob.
6516 */
6517 const char*
6518 mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type)
6519 {
6520 guint32 cindex;
6521 guint32 constant_cols [MONO_CONSTANT_SIZE];
6522 int field_index;
6523 MonoClass *klass = field->parent;
6524
6525 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT);
6526
6527 if (!klass->ext || !klass->ext->field_def_values) {
6528 mono_loader_lock ();
6529 mono_class_alloc_ext (klass);
6530 if (!klass->ext->field_def_values)
6531 klass->ext->field_def_values = mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * klass->field.count);
6532 mono_loader_unlock ();
6533 }
6534
6535 field_index = mono_field_get_index (field);
6536
6537 if (!klass->ext->field_def_values [field_index].data) {
6538 cindex = mono_metadata_get_constant_index (field->parent->image, mono_class_get_field_token (field), 0);
6539 if (!cindex)
6540 return NULL;
6541
6542 g_assert (!(field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA));
6543
6544 mono_metadata_decode_row (&field->parent->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6545 klass->ext->field_def_values [field_index].def_type = constant_cols [MONO_CONSTANT_TYPE];
6546 klass->ext->field_def_values [field_index].data = (gpointer)mono_metadata_blob_heap (field->parent->image, constant_cols [MONO_CONSTANT_VALUE]);
6547 }
6548
6549 *def_type = klass->ext->field_def_values [field_index].def_type;
6550 return klass->ext->field_def_values [field_index].data;
6551 }
6552
6553 static int
6554 mono_property_get_index (MonoProperty *prop)
6555 {
6556 int index = prop - prop->parent->ext->properties;
6557
6558 g_assert (index >= 0 && index < prop->parent->ext->property.count);
6559
6560 return index;
6561 }
6562
6563 /*
6564 * mono_class_get_property_default_value:
6565 *
6566 * Return the default value of the field as a pointer into the metadata blob.
6567 */
6568 const char*
6569 mono_class_get_property_default_value (MonoProperty *property, MonoTypeEnum *def_type)
6570 {
6571 guint32 cindex;
6572 guint32 constant_cols [MONO_CONSTANT_SIZE];
6573 MonoClass *klass = property->parent;
6574
6575 g_assert (property->attrs & PROPERTY_ATTRIBUTE_HAS_DEFAULT);
6576 /*
6577 * We don't cache here because it is not used by C# so it's quite rare, but
6578 * we still do the lookup in klass->ext because that is where the data
6579 * is stored for dynamic assemblies.
6580 */
6581
6582 if (klass->image->dynamic) {
6583 int prop_index = mono_property_get_index (property);
6584 if (klass->ext->prop_def_values && klass->ext->prop_def_values [prop_index].data) {
6585 *def_type = klass->ext->prop_def_values [prop_index].def_type;
6586 return klass->ext->prop_def_values [prop_index].data;
6587 }
6588 return NULL;
6589 }
6590 cindex = mono_metadata_get_constant_index (klass->image, mono_class_get_property_token (property), 0);
6591 if (!cindex)
6592 return NULL;
6593
6594 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6595 *def_type = constant_cols [MONO_CONSTANT_TYPE];
6596 return (gpointer)mono_metadata_blob_heap (klass->image, constant_cols [MONO_CONSTANT_VALUE]);
6597 }
6598
6599 guint32
6600 mono_class_get_event_token (MonoEvent *event)
6601 {
6602 MonoClass *klass = event->parent;
6603 int i;
6604
6605 while (klass) {
6606 if (klass->ext) {
6607 for (i = 0; i < klass->ext->event.count; ++i) {
6608 if (&klass->ext->events [i] == event)
6609 return mono_metadata_make_token (MONO_TABLE_EVENT, klass->ext->event.first + i + 1);
6610 }
6611 }
6612 klass = klass->parent;
6613 }
6614
6615 g_assert_not_reached ();
6616 return 0;
6617 }
6618
6619 MonoProperty*
6620 mono_class_get_property_from_name (MonoClass *klass, const char *name)
6621 {
6622 while (klass) {
6623 MonoProperty* p;
6624 gpointer iter = NULL;
6625 while ((p = mono_class_get_properties (klass, &iter))) {
6626 if (! strcmp (name, p->name))
6627 return p;
6628 }
6629 klass = klass->parent;
6630 }
6631 return NULL;
6632 }
6633
6634 guint32
6635 mono_class_get_property_token (MonoProperty *prop)
6636 {
6637 MonoClass *klass = prop->parent;
6638 while (klass) {
6639 MonoProperty* p;
6640 int i = 0;
6641 gpointer iter = NULL;
6642 while ((p = mono_class_get_properties (klass, &iter))) {
6643 if (&klass->ext->properties [i] == prop)
6644 return mono_metadata_make_token (MONO_TABLE_PROPERTY, klass->ext->property.first + i + 1);
6645
6646 i ++;
6647 }
6648 klass = klass->parent;
6649 }
6650
6651 g_assert_not_reached ();
6652 return 0;
6653 }
6654
6655 char *
6656 mono_class_name_from_token (MonoImage *image, guint32 type_token)
6657 {
6658 const char *name, *nspace;
6659 if (image->dynamic)
6660 return g_strdup_printf ("DynamicType 0x%08x", type_token);
6661
6662 switch (type_token & 0xff000000){
6663 case MONO_TOKEN_TYPE_DEF: {
6664 guint32 cols [MONO_TYPEDEF_SIZE];
6665 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
6666 guint tidx = mono_metadata_token_index (type_token);
6667
6668 if (tidx > tt->rows)
6669 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6670
6671 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
6672 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
6673 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
6674 if (strlen (nspace) == 0)
6675 return g_strdup_printf ("%s", name);
6676 else
6677 return g_strdup_printf ("%s.%s", nspace, name);
6678 }
6679
6680 case MONO_TOKEN_TYPE_REF: {
6681 MonoError error;
6682 guint32 cols [MONO_TYPEREF_SIZE];
6683 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
6684 guint tidx = mono_metadata_token_index (type_token);
6685
6686 if (tidx > t->rows)
6687 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6688
6689 if (!mono_verifier_verify_typeref_row (image, tidx - 1, &error)) {
6690 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
6691 mono_error_cleanup (&error);
6692 return msg;
6693 }
6694
6695 mono_metadata_decode_row (t, tidx-1, cols, MONO_TYPEREF_SIZE);
6696 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
6697 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
6698 if (strlen (nspace) == 0)
6699 return g_strdup_printf ("%s", name);
6700 else
6701 return g_strdup_printf ("%s.%s", nspace, name);
6702 }
6703
6704 case MONO_TOKEN_TYPE_SPEC:
6705 return g_strdup_printf ("Typespec 0x%08x", type_token);
6706 default:
6707 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6708 }
6709 }
6710
6711 static char *
6712 mono_assembly_name_from_token (MonoImage *image, guint32 type_token)
6713 {
6714 if (image->dynamic)
6715 return g_strdup_printf ("DynamicAssembly %s", image->name);
6716
6717 switch (type_token & 0xff000000){
6718 case MONO_TOKEN_TYPE_DEF:
6719 if (image->assembly)
6720 return mono_stringify_assembly_name (&image->assembly->aname);
6721 else if (image->assembly_name)
6722 return g_strdup (image->assembly_name);
6723 return g_strdup_printf ("%s", image->name ? image->name : "[Could not resolve assembly name");
6724 case MONO_TOKEN_TYPE_REF: {
6725 MonoError error;
6726 MonoAssemblyName aname;
6727 guint32 cols [MONO_TYPEREF_SIZE];
6728 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
6729 guint32 idx = mono_metadata_token_index (type_token);
6730
6731 if (idx > t->rows)
6732 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6733
6734 if (!mono_verifier_verify_typeref_row (image, idx - 1, &error)) {
6735 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
6736 mono_error_cleanup (&error);
6737 return msg;
6738 }
6739 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPEREF_SIZE);
6740
6741 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLTION_SCOPE_BITS;
6742 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLTION_SCOPE_MASK) {
6743 case MONO_RESOLTION_SCOPE_MODULE:
6744 /* FIXME: */
6745 return g_strdup ("");
6746 case MONO_RESOLTION_SCOPE_MODULEREF:
6747 /* FIXME: */
6748 return g_strdup ("");
6749 case MONO_RESOLTION_SCOPE_TYPEREF:
6750 /* FIXME: */
6751 return g_strdup ("");
6752 case MONO_RESOLTION_SCOPE_ASSEMBLYREF:
6753 mono_assembly_get_assemblyref (image, idx - 1, &aname);
6754 return mono_stringify_assembly_name (&aname);
6755 default:
6756 g_assert_not_reached ();
6757 }
6758 break;
6759 }
6760 case MONO_TOKEN_TYPE_SPEC:
6761 /* FIXME: */
6762 return g_strdup ("");
6763 default:
6764 g_assert_not_reached ();
6765 }
6766
6767 return NULL;
6768 }
6769
6770 /**
6771 * mono_class_get_full:
6772 * @image: the image where the class resides
6773 * @type_token: the token for the class
6774 * @context: the generic context used to evaluate generic instantiations in
6775 *
6776 * Returns: the MonoClass that represents @type_token in @image
6777 */
6778 MonoClass *
6779 mono_class_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
6780 {
6781 MonoError error;
6782 MonoClass *class = NULL;
6783
6784 if (image->dynamic) {
6785 int table = mono_metadata_token_table (type_token);
6786
6787 if (table != MONO_TABLE_TYPEDEF && table != MONO_TABLE_TYPEREF && table != MONO_TABLE_TYPESPEC) {
6788 mono_loader_set_error_bad_image (g_strdup ("Bad type token."));
6789 return NULL;
6790 }
6791 return mono_lookup_dynamic_token (image, type_token, context);
6792 }
6793
6794 switch (type_token & 0xff000000){
6795 case MONO_TOKEN_TYPE_DEF:
6796 class = mono_class_create_from_typedef (image, type_token);
6797 break;
6798 case MONO_TOKEN_TYPE_REF:
6799 class = mono_class_from_typeref (image, type_token);
6800 break;
6801 case MONO_TOKEN_TYPE_SPEC:
6802 class = mono_class_create_from_typespec (image, type_token, context, &error);
6803 if (!mono_error_ok (&error)) {
6804 /*FIXME don't swallow the error message*/
6805 mono_error_cleanup (&error);
6806 }
6807 break;
6808 default:
6809 g_warning ("unknown token type %x", type_token & 0xff000000);
6810 g_assert_not_reached ();
6811 }
6812
6813 if (!class){
6814 char *name = mono_class_name_from_token (image, type_token);
6815 char *assembly = mono_assembly_name_from_token (image, type_token);
6816 mono_loader_set_error_type_load (name, assembly);
6817 g_free (name);
6818 g_free (assembly);
6819 }
6820
6821 return class;
6822 }
6823
6824
6825 /**
6826 * mono_type_get_full:
6827 * @image: the image where the type resides
6828 * @type_token: the token for the type
6829 * @context: the generic context used to evaluate generic instantiations in
6830 *
6831 * This functions exists to fullfill the fact that sometimes it's desirable to have access to the
6832 *
6833 * Returns: the MonoType that represents @type_token in @image
6834 */
6835 MonoType *
6836 mono_type_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
6837 {
6838 MonoError error;
6839 MonoType *type = NULL;
6840 gboolean inflated = FALSE;
6841
6842 //FIXME: this will not fix the very issue for which mono_type_get_full exists -but how to do it then?
6843 if (image->dynamic)
6844 return mono_class_get_type (mono_lookup_dynamic_token (image, type_token, context));
6845
6846 if ((type_token & 0xff000000) != MONO_TOKEN_TYPE_SPEC) {
6847 MonoClass *class = mono_class_get_full (image, type_token, context);
6848 return class ? mono_class_get_type (class) : NULL;
6849 }
6850
6851 type = mono_type_retrieve_from_typespec (image, type_token, context, &inflated, &error);
6852
6853 if (!mono_error_ok (&error)) {
6854 /*FIXME don't swalloc the error message.*/
6855 char *name = mono_class_name_from_token (image, type_token);
6856 char *assembly = mono_assembly_name_from_token (image, type_token);
6857
6858 g_warning ("Error loading type %s from %s due to %s", name, assembly, mono_error_get_message (&error));
6859
6860 mono_error_cleanup (&error);
6861 mono_loader_set_error_type_load (name, assembly);
6862 return NULL;
6863 }
6864
6865 if (inflated) {
6866 MonoType *tmp = type;
6867 type = mono_class_get_type (mono_class_from_mono_type (type));
6868 /* FIXME: This is a workaround fo the fact that a typespec token sometimes reference to the generic type definition.
6869 * A MonoClass::byval_arg of a generic type definion has type CLASS.
6870 * Some parts of mono create a GENERICINST to reference a generic type definition and this generates confict with byval_arg.
6871 *
6872 * The long term solution is to chaise this places and make then set MonoType::type correctly.
6873 * */
6874 if (type->type != tmp->type)
6875 type = tmp;
6876 else
6877 mono_metadata_free_type (tmp);
6878 }
6879 return type;
6880 }
6881
6882
6883 MonoClass *
6884 mono_class_get (MonoImage *image, guint32 type_token)
6885 {
6886 return mono_class_get_full (image, type_token, NULL);
6887 }
6888
6889 /**
6890 * mono_image_init_name_cache:
6891 *
6892 * Initializes the class name cache stored in image->name_cache.
6893 *
6894 * LOCKING: Acquires the corresponding image lock.
6895 */
6896 void
6897 mono_image_init_name_cache (MonoImage *image)
6898 {
6899 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
6900 guint32 cols [MONO_TYPEDEF_SIZE];
6901 const char *name;
6902 const char *nspace;
6903 guint32 i, visib, nspace_index;
6904 GHashTable *name_cache2, *nspace_table;
6905
6906 mono_image_lock (image);
6907
6908 if (image->name_cache) {
6909 mono_image_unlock (image);
6910 return;
6911 }
6912
6913 image->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
6914
6915 if (image->dynamic) {
6916 mono_image_unlock (image);
6917 return;
6918 }
6919
6920 /* Temporary hash table to avoid lookups in the nspace_table */
6921 name_cache2 = g_hash_table_new (NULL, NULL);
6922
6923 for (i = 1; i <= t->rows; ++i) {
6924 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
6925 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
6926 /*
6927 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
6928 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
6929 */
6930 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
6931 continue;
6932 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
6933 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
6934
6935 nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
6936 nspace_table = g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
6937 if (!nspace_table) {
6938 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
6939 g_hash_table_insert (image->name_cache, (char*)nspace, nspace_table);
6940 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
6941 nspace_table);
6942 }
6943 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
6944 }
6945
6946 /* Load type names from EXPORTEDTYPES table */
6947 {
6948 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
6949 guint32 cols [MONO_EXP_TYPE_SIZE];
6950 int i;
6951
6952 for (i = 0; i < t->rows; ++i) {
6953 mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
6954 name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
6955 nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
6956
6957 nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
6958 nspace_table = g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
6959 if (!nspace_table) {
6960 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
6961 g_hash_table_insert (image->name_cache, (char*)nspace, nspace_table);
6962 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
6963 nspace_table);
6964 }
6965 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
6966 }
6967 }
6968
6969 g_hash_table_destroy (name_cache2);
6970 mono_image_unlock (image);
6971 }
6972
6973 /*FIXME Only dynamic assemblies should allow this operation.*/
6974 void
6975 mono_image_add_to_name_cache (MonoImage *image, const char *nspace,
6976 const char *name, guint32 index)
6977 {
6978 GHashTable *nspace_table;
6979 GHashTable *name_cache;
6980 guint32 old_index;
6981
6982 mono_image_lock (image);
6983
6984 if (!image->name_cache)
6985 mono_image_init_name_cache (image);
6986
6987 name_cache = image->name_cache;
6988 if (!(nspace_table = g_hash_table_lookup (name_cache, nspace))) {
6989 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
6990 g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
6991 }
6992
6993 if ((old_index = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, (char*) name))))
6994 g_error ("overrwritting old token %x on image %s for type %s::%s", old_index, image->name, nspace, name);
6995
6996 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
6997
6998 mono_image_unlock (image);
6999 }
7000
7001 typedef struct {
7002 gconstpointer key;
7003 gpointer value;
7004 } FindUserData;
7005
7006 static void
7007 find_nocase (gpointer key, gpointer value, gpointer user_data)
7008 {
7009 char *name = (char*)key;
7010 FindUserData *data = (FindUserData*)user_data;
7011
7012 if (!data->value && (mono_utf8_strcasecmp (name, (char*)data->key) == 0))
7013 data->value = value;
7014 }
7015
7016 /**
7017 * mono_class_from_name_case:
7018 * @image: The MonoImage where the type is looked up in
7019 * @name_space: the type namespace
7020 * @name: the type short name.
7021 *
7022 * Obtains a MonoClass with a given namespace and a given name which
7023 * is located in the given MonoImage. The namespace and name
7024 * lookups are case insensitive.
7025 */
7026 MonoClass *
7027 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
7028 {
7029 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7030 guint32 cols [MONO_TYPEDEF_SIZE];
7031 const char *n;
7032 const char *nspace;
7033 guint32 i, visib;
7034
7035 if (image->dynamic) {
7036 guint32 token = 0;
7037 FindUserData user_data;
7038
7039 mono_image_lock (image);
7040
7041 if (!image->name_cache)
7042 mono_image_init_name_cache (image);
7043
7044 user_data.key = name_space;
7045 user_data.value = NULL;
7046 g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
7047
7048 if (user_data.value) {
7049 GHashTable *nspace_table = (GHashTable*)user_data.value;
7050
7051 user_data.key = name;
7052 user_data.value = NULL;
7053
7054 g_hash_table_foreach (nspace_table, find_nocase, &user_data);
7055
7056 if (user_data.value)
7057 token = GPOINTER_TO_UINT (user_data.value);
7058 }
7059
7060 mono_image_unlock (image);
7061
7062 if (token)
7063 return mono_class_get (image, MONO_TOKEN_TYPE_DEF | token);
7064 else
7065 return NULL;
7066
7067 }
7068
7069 /* add a cache if needed */
7070 for (i = 1; i <= t->rows; ++i) {
7071 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7072 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7073 /*
7074 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7075 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7076 */
7077 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7078 continue;
7079 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7080 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7081 if (mono_utf8_strcasecmp (n, name) == 0 && mono_utf8_strcasecmp (nspace, name_space) == 0)
7082 return mono_class_get (image, MONO_TOKEN_TYPE_DEF | i);
7083 }
7084 return NULL;
7085 }
7086
7087 static MonoClass*
7088 return_nested_in (MonoClass *class, char *nested)
7089 {
7090 MonoClass *found;
7091 char *s = strchr (nested, '/');
7092 gpointer iter = NULL;
7093
7094 if (s) {
7095 *s = 0;
7096 s++;
7097 }
7098
7099 while ((found = mono_class_get_nested_types (class, &iter))) {
7100 if (strcmp (found->name, nested) == 0) {
7101 if (s)
7102 return return_nested_in (found, s);
7103 return found;
7104 }
7105 }
7106 return NULL;
7107 }
7108
7109 static MonoClass*
7110 search_modules (MonoImage *image, const char *name_space, const char *name)
7111 {
7112 MonoTableInfo *file_table = &image->tables [MONO_TABLE_FILE];
7113 MonoImage *file_image;
7114 MonoClass *class;
7115 int i;
7116
7117 /*
7118 * The EXPORTEDTYPES table only contains public types, so have to search the
7119 * modules as well.
7120 * Note: image->modules contains the contents of the MODULEREF table, while
7121 * the real module list is in the FILE table.
7122 */
7123 for (i = 0; i < file_table->rows; i++) {
7124 guint32 cols [MONO_FILE_SIZE];
7125 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
7126 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
7127 continue;
7128
7129 file_image = mono_image_load_file_for_image (image, i + 1);
7130 if (file_image) {
7131 class = mono_class_from_name (file_image, name_space, name);
7132 if (class)
7133 return class;
7134 }
7135 }
7136
7137 return NULL;
7138 }
7139
7140 /**
7141 * mono_class_from_name:
7142 * @image: The MonoImage where the type is looked up in
7143 * @name_space: the type namespace
7144 * @name: the type short name.
7145 *
7146 * Obtains a MonoClass with a given namespace and a given name which
7147 * is located in the given MonoImage.
7148 */
7149 MonoClass *
7150 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
7151 {
7152 GHashTable *nspace_table;
7153 MonoImage *loaded_image;
7154 guint32 token = 0;
7155 int i;
7156 MonoClass *class;
7157 char *nested;
7158 char buf [1024];
7159
7160 if ((nested = strchr (name, '/'))) {
7161 int pos = nested - name;
7162 int len = strlen (name);
7163 if (len > 1023)
7164 return NULL;
7165 memcpy (buf, name, len + 1);
7166 buf [pos] = 0;
7167 nested = buf + pos + 1;
7168 name = buf;
7169 }
7170
7171 /* FIXME: get_class_from_name () can't handle types in the EXPORTEDTYPE table */
7172 if (get_class_from_name && image->tables [MONO_TABLE_EXPORTEDTYPE].rows == 0) {
7173 gboolean res = get_class_from_name (image, name_space, name, &class);
7174 if (res) {
7175 if (!class)
7176 class = search_modules (image, name_space, name);
7177 if (nested)
7178 return class ? return_nested_in (class, nested) : NULL;
7179 else
7180 return class;
7181 }
7182 }
7183
7184 mono_image_lock (image);
7185
7186 if (!image->name_cache)
7187 mono_image_init_name_cache (image);
7188
7189 nspace_table = g_hash_table_lookup (image->name_cache, name_space);
7190
7191 if (nspace_table)
7192 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
7193
7194 mono_image_unlock (image);
7195
7196 if (!token && image->dynamic && image->modules) {
7197 /* Search modules as well */
7198 for (i = 0; i < image->module_count; ++i) {
7199 MonoImage *module = image->modules [i];
7200
7201 class = mono_class_from_name (module, name_space, name);
7202 if (class)
7203 return class;
7204 }
7205 }
7206
7207 if (!token) {
7208 class = search_modules (image, name_space, name);
7209 if (class)
7210 return class;
7211 }
7212
7213 if (!token)
7214 return NULL;
7215
7216 if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
7217 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7218 guint32 cols [MONO_EXP_TYPE_SIZE];
7219 guint32 idx, impl;
7220
7221 idx = mono_metadata_token_index (token);
7222
7223 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
7224
7225 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7226 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
7227 loaded_image = mono_assembly_load_module (image->assembly, impl >> MONO_IMPLEMENTATION_BITS);
7228 if (!loaded_image)
7229 return NULL;
7230 class = mono_class_from_name (loaded_image, name_space, name);
7231 if (nested)
7232 return return_nested_in (class, nested);
7233 return class;
7234 } else if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
7235 guint32 assembly_idx;
7236
7237 assembly_idx = impl >> MONO_IMPLEMENTATION_BITS;
7238
7239 mono_assembly_load_reference (image, assembly_idx - 1);
7240 g_assert (image->references [assembly_idx - 1]);
7241 if (image->references [assembly_idx - 1] == (gpointer)-1)
7242 return NULL;
7243 else
7244 /* FIXME: Cycle detection */
7245 return mono_class_from_name (image->references [assembly_idx - 1]->image, name_space, name);
7246 } else {
7247 g_error ("not yet implemented");
7248 }
7249 }
7250
7251 token = MONO_TOKEN_TYPE_DEF | token;
7252
7253 class = mono_class_get (image, token);
7254 if (nested)
7255 return return_nested_in (class, nested);
7256 return class;
7257 }
7258
7259 /*FIXME test for interfaces with variant generic arguments*/
7260 gboolean
7261 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
7262 gboolean check_interfaces)
7263 {
7264 g_assert (klassc->idepth > 0);
7265 if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && !MONO_CLASS_IS_INTERFACE (klass)) {
7266 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, klassc->interface_id))
7267 return TRUE;
7268 } else if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && MONO_CLASS_IS_INTERFACE (klass)) {
7269 int i;
7270
7271 for (i = 0; i < klass->interface_count; i ++) {
7272 MonoClass *ic = klass->interfaces [i];
7273 if (ic == klassc)
7274 return TRUE;
7275 }
7276 } else {
7277 if (!MONO_CLASS_IS_INTERFACE (klass) && mono_class_has_parent (klass, klassc))
7278 return TRUE;
7279 }
7280
7281 /*
7282 * MS.NET thinks interfaces are a subclass of Object, so we think it as
7283 * well.
7284 */
7285 if (klassc == mono_defaults.object_class)
7286 return TRUE;
7287
7288 return FALSE;
7289 }
7290
7291 static gboolean
7292 mono_type_is_generic_argument (MonoType *type)
7293 {
7294 return type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR;
7295 }
7296
7297 gboolean
7298 mono_class_has_variant_generic_params (MonoClass *klass)
7299 {
7300 int i;
7301 MonoGenericContainer *container;
7302
7303 if (!klass->generic_class)
7304 return FALSE;
7305
7306 container = klass->generic_class->container_class->generic_container;
7307
7308 for (i = 0; i < container->type_argc; ++i)
7309 if (mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT))
7310 return TRUE;
7311
7312 return FALSE;
7313 }
7314
7315 static gboolean
7316 mono_gparam_is_reference_conversible (MonoClass *target, MonoClass *candidate, gboolean check_for_reference_conv)
7317 {
7318 if (target == candidate)
7319 return TRUE;
7320
7321 if (check_for_reference_conv &&
7322 mono_type_is_generic_argument (&target->byval_arg) &&
7323 mono_type_is_generic_argument (&candidate->byval_arg)) {
7324 MonoGenericParam *gparam = candidate->byval_arg.data.generic_param;
7325 MonoGenericParamInfo *pinfo = mono_generic_param_info (gparam);
7326
7327 if (!pinfo || (pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) == 0)
7328 return FALSE;
7329 }
7330 if (!mono_class_is_assignable_from (target, candidate))
7331 return FALSE;
7332 return TRUE;
7333 }
7334
7335 /**
7336 * @container the generic container from the GTD
7337 * @klass: the class to be assigned to
7338 * @oklass: the source class
7339 *
7340 * Both klass and oklass must be instances of the same generic interface.
7341 * Return true if @klass can be assigned to a @klass variable
7342 */
7343 gboolean
7344 mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass, gboolean check_for_reference_conv)
7345 {
7346 int j;
7347 MonoType **klass_argv, **oklass_argv;
7348 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
7349 MonoGenericContainer *container = klass_gtd->generic_container;
7350
7351 if (klass == oklass)
7352 return TRUE;
7353
7354 /*Viable candidates are instances of the same generic interface*/
7355 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
7356 return FALSE;
7357
7358 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
7359 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
7360
7361 for (j = 0; j < container->type_argc; ++j) {
7362 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
7363 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
7364
7365 if (param1_class->valuetype != param2_class->valuetype || (param1_class->valuetype && param1_class != param2_class))
7366 return FALSE;
7367
7368 /*
7369 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
7370 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
7371 */
7372 if (param1_class != param2_class) {
7373 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
7374 if (!mono_gparam_is_reference_conversible (param1_class, param2_class, check_for_reference_conv))
7375 return FALSE;
7376 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
7377 if (!mono_gparam_is_reference_conversible (param2_class, param1_class, check_for_reference_conv))
7378 return FALSE;
7379 } else
7380 return FALSE;
7381 }
7382 }
7383 return TRUE;
7384 }
7385
7386 static gboolean
7387 mono_gparam_is_assignable_from (MonoClass *target, MonoClass *candidate)
7388 {
7389 MonoGenericParam *gparam, *ogparam;
7390 MonoGenericParamInfo *tinfo, *cinfo;
7391 MonoClass **candidate_class;
7392 gboolean class_constraint_satisfied, valuetype_constraint_satisfied;
7393 int tmask, cmask;
7394
7395 if (target == candidate)
7396 return TRUE;
7397 if (target->byval_arg.type != candidate->byval_arg.type)
7398 return FALSE;
7399
7400 gparam = target->byval_arg.data.generic_param;
7401 ogparam = candidate->byval_arg.data.generic_param;
7402 tinfo = mono_generic_param_info (gparam);
7403 cinfo = mono_generic_param_info (ogparam);
7404
7405 class_constraint_satisfied = FALSE;
7406 valuetype_constraint_satisfied = FALSE;
7407
7408 /*candidate must have a super set of target's special constraints*/
7409 tmask = tinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
7410 cmask = cinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
7411
7412 if (cinfo->constraints) {
7413 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
7414 MonoClass *cc = *candidate_class;
7415
7416 if (mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
7417 class_constraint_satisfied = TRUE;
7418 else if (!mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
7419 valuetype_constraint_satisfied = TRUE;
7420 }
7421 }
7422 class_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) != 0;
7423 valuetype_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) != 0;
7424
7425 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) && !class_constraint_satisfied)
7426 return FALSE;
7427 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) && !valuetype_constraint_satisfied)
7428 return FALSE;
7429 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) && !((cmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) ||
7430 valuetype_constraint_satisfied)) {
7431 return FALSE;
7432 }
7433
7434
7435 /*candidate type constraints must be a superset of target's*/
7436 if (tinfo->constraints) {
7437 MonoClass **target_class;
7438 for (target_class = tinfo->constraints; *target_class; ++target_class) {
7439 MonoClass *tc = *target_class;
7440
7441 /*
7442 * A constraint from @target might inflate into @candidate itself and in that case we don't need
7443 * check it's constraints since it satisfy the constraint by itself.
7444 */
7445 if (mono_metadata_type_equal (&tc->byval_arg, &candidate->byval_arg))
7446 continue;
7447
7448 if (!cinfo->constraints)
7449 return FALSE;
7450
7451 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
7452 MonoClass *cc = *candidate_class;
7453
7454 if (mono_class_is_assignable_from (tc, cc))
7455 break;
7456
7457 /*
7458 * This happens when we have the following:
7459 *
7460 * Bar<K> where K : IFace
7461 * Foo<T, U> where T : U where U : IFace
7462 * ...
7463 * Bar<T> <- T here satisfy K constraint transitively through to U's constraint
7464 *
7465 */
7466 if (mono_type_is_generic_argument (&cc->byval_arg)) {
7467 if (mono_gparam_is_assignable_from (target, cc))
7468 break;
7469 }
7470 }
7471 if (!*candidate_class)
7472 return FALSE;
7473 }
7474 }
7475
7476 /*candidate itself must have a constraint that satisfy target*/
7477 if (cinfo->constraints) {
7478 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
7479 MonoClass *cc = *candidate_class;
7480 if (mono_class_is_assignable_from (target, cc))
7481 return TRUE;
7482 }
7483 }
7484 return FALSE;
7485 }
7486
7487 /**
7488 * mono_class_is_assignable_from:
7489 * @klass: the class to be assigned to
7490 * @oklass: the source class
7491 *
7492 * Return: true if an instance of object oklass can be assigned to an
7493 * instance of object @klass
7494 */
7495 gboolean
7496 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
7497 {
7498 /*FIXME this will cause a lot of irrelevant stuff to be loaded.*/
7499 if (!klass->inited)
7500 mono_class_init (klass);
7501
7502 if (!oklass->inited)
7503 mono_class_init (oklass);
7504
7505 if (klass->exception_type || oklass->exception_type)
7506 return FALSE;
7507
7508 if (mono_type_is_generic_argument (&klass->byval_arg)) {
7509 if (!mono_type_is_generic_argument (&oklass->byval_arg))
7510 return FALSE;
7511 return mono_gparam_is_assignable_from (klass, oklass);
7512 }
7513
7514 if (MONO_CLASS_IS_INTERFACE (klass)) {
7515 if ((oklass->byval_arg.type == MONO_TYPE_VAR) || (oklass->byval_arg.type == MONO_TYPE_MVAR)) {
7516 MonoGenericParam *gparam = oklass->byval_arg.data.generic_param;
7517 MonoClass **constraints = mono_generic_container_get_param_info (gparam->owner, gparam->num)->constraints;
7518 int i;
7519
7520 if (constraints) {
7521 for (i = 0; constraints [i]; ++i) {
7522 if (mono_class_is_assignable_from (klass, constraints [i]))
7523 return TRUE;
7524 }
7525 }
7526
7527 return FALSE;
7528 }
7529
7530 /* interface_offsets might not be set for dynamic classes */
7531 if (oklass->ref_info_handle && !oklass->interface_bitmap)
7532 /*
7533 * oklass might be a generic type parameter but they have
7534 * interface_offsets set.
7535 */
7536 return mono_reflection_call_is_assignable_to (oklass, klass);
7537 if (!oklass->interface_bitmap)
7538 /* Happens with generic instances of not-yet created dynamic types */
7539 return FALSE;
7540 if (MONO_CLASS_IMPLEMENTS_INTERFACE (oklass, klass->interface_id))
7541 return TRUE;
7542
7543 if (mono_class_has_variant_generic_params (klass)) {
7544 MonoError error;
7545 int i;
7546 mono_class_setup_interfaces (oklass, &error);
7547 if (!mono_error_ok (&error)) {
7548 mono_error_cleanup (&error);
7549 return FALSE;
7550 }
7551
7552 /*klass is a generic variant interface, We need to extract from oklass a list of ifaces which are viable candidates.*/
7553 for (i = 0; i < oklass->interface_offsets_count; ++i) {
7554 MonoClass *iface = oklass->interfaces_packed [i];
7555
7556 if (mono_class_is_variant_compatible (klass, iface, FALSE))
7557 return TRUE;
7558 }
7559 }
7560 return FALSE;
7561 } else if (klass->delegate) {
7562 if (mono_class_has_variant_generic_params (klass) && mono_class_is_variant_compatible (klass, oklass, FALSE))
7563 return TRUE;
7564 }else if (klass->rank) {
7565 MonoClass *eclass, *eoclass;
7566
7567 if (oklass->rank != klass->rank)
7568 return FALSE;
7569
7570 /* vectors vs. one dimensional arrays */
7571 if (oklass->byval_arg.type != klass->byval_arg.type)
7572 return FALSE;
7573
7574 eclass = klass->cast_class;
7575 eoclass = oklass->cast_class;
7576
7577 /*
7578 * a is b does not imply a[] is b[] when a is a valuetype, and
7579 * b is a reference type.
7580 */
7581
7582 if (eoclass->valuetype) {
7583 if ((eclass == mono_defaults.enum_class) ||
7584 (eclass == mono_defaults.enum_class->parent) ||
7585 (eclass == mono_defaults.object_class))
7586 return FALSE;
7587 }
7588
7589 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
7590 } else if (mono_class_is_nullable (klass)) {
7591 if (mono_class_is_nullable (oklass))
7592 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
7593 else
7594 return mono_class_is_assignable_from (klass->cast_class, oklass);
7595 } else if (klass == mono_defaults.object_class)
7596 return TRUE;
7597
7598 return mono_class_has_parent (oklass, klass);
7599 }
7600
7601 /*Check if @oklass is variant compatible with @klass.*/
7602 static gboolean
7603 mono_class_is_variant_compatible_slow (MonoClass *klass, MonoClass *oklass)
7604 {
7605 int j;
7606 MonoType **klass_argv, **oklass_argv;
7607 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
7608 MonoGenericContainer *container = klass_gtd->generic_container;
7609
7610 /*Viable candidates are instances of the same generic interface*/
7611 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
7612 return FALSE;
7613
7614 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
7615 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
7616
7617 for (j = 0; j < container->type_argc; ++j) {
7618 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
7619 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
7620
7621 if (param1_class->valuetype != param2_class->valuetype)
7622 return FALSE;
7623
7624 /*
7625 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
7626 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
7627 */
7628 if (param1_class != param2_class) {
7629 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
7630 if (!mono_class_is_assignable_from_slow (param1_class, param2_class))
7631 return FALSE;
7632 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
7633 if (!mono_class_is_assignable_from_slow (param2_class, param1_class))
7634 return FALSE;
7635 } else
7636 return FALSE;
7637 }
7638 }
7639 return TRUE;
7640 }
7641 /*Check if @candidate implements the interface @target*/
7642 static gboolean
7643 mono_class_implement_interface_slow (MonoClass *target, MonoClass *candidate)
7644 {
7645 MonoError error;
7646 int i;
7647 gboolean is_variant = mono_class_has_variant_generic_params (target);
7648
7649 if (is_variant && MONO_CLASS_IS_INTERFACE (candidate)) {
7650 if (mono_class_is_variant_compatible_slow (target, candidate))
7651 return TRUE;
7652 }
7653
7654 do {
7655 if (candidate == target)
7656 return TRUE;
7657
7658 /*A TypeBuilder can have more interfaces on tb->interfaces than on candidate->interfaces*/
7659 if (candidate->image->dynamic && !candidate->wastypebuilder) {
7660 MonoReflectionTypeBuilder *tb = mono_class_get_ref_info (candidate);
7661 int j;
7662 if (tb && tb->interfaces) {
7663 for (j = mono_array_length (tb->interfaces) - 1; j >= 0; --j) {
7664 MonoReflectionType *iface = mono_array_get (tb->interfaces, MonoReflectionType*, j);
7665 MonoClass *iface_class;
7666
7667 /* we can't realize the type here since it can do pretty much anything. */
7668 if (!iface->type)
7669 continue;
7670 iface_class = mono_class_from_mono_type (iface->type);
7671 if (iface_class == target)
7672 return TRUE;
7673 if (is_variant && mono_class_is_variant_compatible_slow (target, iface_class))
7674 return TRUE;
7675 if (mono_class_implement_interface_slow (target, iface_class))
7676 return TRUE;
7677 }
7678 }
7679 } else {
7680 /*setup_interfaces don't mono_class_init anything*/
7681 mono_class_setup_interfaces (candidate, &error);
7682 if (!mono_error_ok (&error)) {
7683 mono_error_cleanup (&error);
7684 return FALSE;
7685 }
7686
7687 for (i = 0; i < candidate->interface_count; ++i) {
7688 if (candidate->interfaces [i] == target)
7689 return TRUE;
7690
7691 if (is_variant && mono_class_is_variant_compatible_slow (target, candidate->interfaces [i]))
7692 return TRUE;
7693
7694 if (mono_class_implement_interface_slow (target, candidate->interfaces [i]))
7695 return TRUE;
7696 }
7697 }
7698 candidate = candidate->parent;
7699 } while (candidate);
7700
7701 return FALSE;
7702 }
7703
7704 /*
7705 * Check if @oklass can be assigned to @klass.
7706 * This function does the same as mono_class_is_assignable_from but is safe to be used from mono_class_init context.
7707 */
7708 gboolean
7709 mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate)
7710 {
7711 if (candidate == target)
7712 return TRUE;
7713 if (target == mono_defaults.object_class)
7714 return TRUE;
7715
7716 /*setup_supertypes don't mono_class_init anything */
7717 mono_class_setup_supertypes (candidate);
7718 mono_class_setup_supertypes (target);
7719
7720 if (mono_class_has_parent (candidate, target))
7721 return TRUE;
7722
7723 /*If target is not an interface there is no need to check them.*/
7724 if (MONO_CLASS_IS_INTERFACE (target))
7725 return mono_class_implement_interface_slow (target, candidate);
7726
7727 if (target->delegate && mono_class_has_variant_generic_params (target))
7728 return mono_class_is_variant_compatible (target, candidate, FALSE);
7729
7730 /*FIXME properly handle nullables and arrays */
7731 /*FIXME properly handle (M)VAR */
7732 return FALSE;
7733 }
7734
7735 /**
7736 * mono_class_get_cctor:
7737 * @klass: A MonoClass pointer
7738 *
7739 * Returns: the static constructor of @klass if it exists, NULL otherwise.
7740 */
7741 MonoMethod*
7742 mono_class_get_cctor (MonoClass *klass)
7743 {
7744 MonoCachedClassInfo cached_info;
7745
7746 if (klass->image->dynamic) {
7747 /*
7748 * has_cctor is not set for these classes because mono_class_init () is
7749 * not run for them.
7750 */
7751 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
7752 }
7753
7754 if (!klass->has_cctor)
7755 return NULL;
7756
7757 if (mono_class_get_cached_class_info (klass, &cached_info))
7758 return mono_get_method (klass->image, cached_info.cctor_token, klass);
7759
7760 if (klass->generic_class && !klass->methods)
7761 return mono_class_get_inflated_method (klass, mono_class_get_cctor (klass->generic_class->container_class));
7762
7763 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
7764 }
7765
7766 /**
7767 * mono_class_get_finalizer:
7768 * @klass: The MonoClass pointer
7769 *
7770 * Returns: the finalizer method of @klass if it exists, NULL otherwise.
7771 */
7772 MonoMethod*
7773 mono_class_get_finalizer (MonoClass *klass)
7774 {
7775 MonoCachedClassInfo cached_info;
7776
7777 if (!klass->inited)
7778 mono_class_init (klass);
7779 if (!mono_class_has_finalizer (klass))
7780 return NULL;
7781
7782 if (mono_class_get_cached_class_info (klass, &cached_info))
7783 return mono_get_method (cached_info.finalize_image, cached_info.finalize_token, NULL);
7784 else {
7785 mono_class_setup_vtable (klass);
7786 return klass->vtable [finalize_slot];
7787 }
7788 }
7789
7790 /**
7791 * mono_class_needs_cctor_run:
7792 * @klass: the MonoClass pointer
7793 * @caller: a MonoMethod describing the caller
7794 *
7795 * Determines whenever the class has a static constructor and whenever it
7796 * needs to be called when executing CALLER.
7797 */
7798 gboolean
7799 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
7800 {
7801 MonoMethod *method;
7802
7803 method = mono_class_get_cctor (klass);
7804 if (method)
7805 return (method == caller) ? FALSE : TRUE;
7806 else
7807 return FALSE;
7808 }
7809
7810 /**
7811 * mono_class_array_element_size:
7812 * @klass:
7813 *
7814 * Returns: the number of bytes an element of type @klass
7815 * uses when stored into an array.
7816 */
7817 gint32
7818 mono_class_array_element_size (MonoClass *klass)
7819 {
7820 MonoType *type = &klass->byval_arg;
7821
7822 handle_enum:
7823 switch (type->type) {
7824 case MONO_TYPE_I1:
7825 case MONO_TYPE_U1:
7826 case MONO_TYPE_BOOLEAN:
7827 return 1;
7828 case MONO_TYPE_I2:
7829 case MONO_TYPE_U2:
7830 case MONO_TYPE_CHAR:
7831 return 2;
7832 case MONO_TYPE_I4:
7833 case MONO_TYPE_U4:
7834 case MONO_TYPE_R4:
7835 return 4;
7836 case MONO_TYPE_I:
7837 case MONO_TYPE_U:
7838 case MONO_TYPE_PTR:
7839 case MONO_TYPE_CLASS:
7840 case MONO_TYPE_STRING:
7841 case MONO_TYPE_OBJECT:
7842 case MONO_TYPE_SZARRAY:
7843 case MONO_TYPE_ARRAY:
7844 case MONO_TYPE_VAR:
7845 case MONO_TYPE_MVAR:
7846 return sizeof (gpointer);
7847 case MONO_TYPE_I8:
7848 case MONO_TYPE_U8:
7849 case MONO_TYPE_R8:
7850 return 8;
7851 case MONO_TYPE_VALUETYPE:
7852 if (type->data.klass->enumtype) {
7853 type = mono_class_enum_basetype (type->data.klass);
7854 klass = klass->element_class;
7855 goto handle_enum;
7856 }
7857 return mono_class_instance_size (klass) - sizeof (MonoObject);
7858 case MONO_TYPE_GENERICINST:
7859 type = &type->data.generic_class->container_class->byval_arg;
7860 goto handle_enum;
7861
7862 case MONO_TYPE_VOID:
7863 return 0;
7864
7865 default:
7866 g_error ("unknown type 0x%02x in mono_class_array_element_size", type->type);
7867 }
7868 return -1;
7869 }
7870
7871 /**
7872 * mono_array_element_size:
7873 * @ac: pointer to a #MonoArrayClass
7874 *
7875 * Returns: the size of single array element.
7876 */
7877 gint32
7878 mono_array_element_size (MonoClass *ac)
7879 {
7880 g_assert (ac->rank);
7881 return ac->sizes.element_size;
7882 }
7883
7884 gpointer
7885 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class,
7886 MonoGenericContext *context)
7887 {
7888 if (image->dynamic) {
7889 MonoClass *tmp_handle_class;
7890 gpointer obj = mono_lookup_dynamic_token_class (image, token, TRUE, &tmp_handle_class, context);
7891
7892 g_assert (tmp_handle_class);
7893 if (handle_class)
7894 *handle_class = tmp_handle_class;
7895
7896 if (tmp_handle_class == mono_defaults.typehandle_class)
7897 return &((MonoClass*)obj)->byval_arg;
7898 else
7899 return obj;
7900 }
7901
7902 switch (token & 0xff000000) {
7903 case MONO_TOKEN_TYPE_DEF:
7904 case MONO_TOKEN_TYPE_REF:
7905 case MONO_TOKEN_TYPE_SPEC: {
7906 MonoType *type;
7907 if (handle_class)
7908 *handle_class = mono_defaults.typehandle_class;
7909 type = mono_type_get_full (image, token, context);
7910 if (!type)
7911 return NULL;
7912 mono_class_init (mono_class_from_mono_type (type));
7913 /* We return a MonoType* as handle */
7914 return type;
7915 }
7916 case MONO_TOKEN_FIELD_DEF: {
7917 MonoClass *class;
7918 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
7919 if (!type)
7920 return NULL;
7921 if (handle_class)
7922 *handle_class = mono_defaults.fieldhandle_class;
7923 class = mono_class_get_full (image, MONO_TOKEN_TYPE_DEF | type, context);
7924 if (!class)
7925 return NULL;
7926 mono_class_init (class);
7927 return mono_class_get_field (class, token);
7928 }
7929 case MONO_TOKEN_METHOD_DEF:
7930 case MONO_TOKEN_METHOD_SPEC: {
7931 MonoMethod *meth;
7932 meth = mono_get_method_full (image, token, NULL, context);
7933 if (handle_class)
7934 *handle_class = mono_defaults.methodhandle_class;
7935 return meth;
7936 }
7937 case MONO_TOKEN_MEMBER_REF: {
7938 guint32 cols [MONO_MEMBERREF_SIZE];
7939 const char *sig;
7940 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
7941 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
7942 mono_metadata_decode_blob_size (sig, &sig);
7943 if (*sig == 0x6) { /* it's a field */
7944 MonoClass *klass;
7945 MonoClassField *field;
7946 field = mono_field_from_token (image, token, &klass, context);
7947 if (handle_class)
7948 *handle_class = mono_defaults.fieldhandle_class;
7949 return field;
7950 } else {
7951 MonoMethod *meth;
7952 meth = mono_get_method_full (image, token, NULL, context);
7953 if (handle_class)
7954 *handle_class = mono_defaults.methodhandle_class;
7955 return meth;
7956 }
7957 }
7958 default:
7959 g_warning ("Unknown token 0x%08x in ldtoken", token);
7960 break;
7961 }
7962 return NULL;
7963 }
7964
7965 /**
7966 * This function might need to call runtime functions so it can't be part
7967 * of the metadata library.
7968 */
7969 static MonoLookupDynamicToken lookup_dynamic = NULL;
7970
7971 void
7972 mono_install_lookup_dynamic_token (MonoLookupDynamicToken func)
7973 {
7974 lookup_dynamic = func;
7975 }
7976
7977 gpointer
7978 mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context)
7979 {
7980 MonoClass *handle_class;
7981
7982 return lookup_dynamic (image, token, TRUE, &handle_class, context);
7983 }
7984
7985 gpointer
7986 mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context)
7987 {
7988 return lookup_dynamic (image, token, valid_token, handle_class, context);
7989 }
7990
7991 static MonoGetCachedClassInfo get_cached_class_info = NULL;
7992
7993 void
7994 mono_install_get_cached_class_info (MonoGetCachedClassInfo func)
7995 {
7996 get_cached_class_info = func;
7997 }
7998
7999 static gboolean
8000 mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
8001 {
8002 if (!get_cached_class_info)
8003 return FALSE;
8004 else
8005 return get_cached_class_info (klass, res);
8006 }
8007
8008 void
8009 mono_install_get_class_from_name (MonoGetClassFromName func)
8010 {
8011 get_class_from_name = func;
8012 }
8013
8014 MonoImage*
8015 mono_class_get_image (MonoClass *klass)
8016 {
8017 return klass->image;
8018 }
8019
8020 /**
8021 * mono_class_get_element_class:
8022 * @klass: the MonoClass to act on
8023 *
8024 * Returns: the element class of an array or an enumeration.
8025 */
8026 MonoClass*
8027 mono_class_get_element_class (MonoClass *klass)
8028 {
8029 return klass->element_class;
8030 }
8031
8032 /**
8033 * mono_class_is_valuetype:
8034 * @klass: the MonoClass to act on
8035 *
8036 * Returns: true if the MonoClass represents a ValueType.
8037 */
8038 gboolean
8039 mono_class_is_valuetype (MonoClass *klass)
8040 {
8041 return klass->valuetype;
8042 }
8043
8044 /**
8045 * mono_class_is_enum:
8046 * @klass: the MonoClass to act on
8047 *
8048 * Returns: true if the MonoClass represents an enumeration.
8049 */
8050 gboolean
8051 mono_class_is_enum (MonoClass *klass)
8052 {
8053 return klass->enumtype;
8054 }
8055
8056 /**
8057 * mono_class_enum_basetype:
8058 * @klass: the MonoClass to act on
8059 *
8060 * Returns: the underlying type representation for an enumeration.
8061 */
8062 MonoType*
8063 mono_class_enum_basetype (MonoClass *klass)
8064 {
8065 if (klass->element_class == klass)
8066 /* SRE or broken types */
8067 return NULL;
8068 else
8069 return &klass->element_class->byval_arg;
8070 }
8071
8072 /**
8073 * mono_class_get_parent
8074 * @klass: the MonoClass to act on
8075 *
8076 * Returns: the parent class for this class.
8077 */
8078 MonoClass*
8079 mono_class_get_parent (MonoClass *klass)
8080 {
8081 return klass->parent;
8082 }
8083
8084 /**
8085 * mono_class_get_nesting_type;
8086 * @klass: the MonoClass to act on
8087 *
8088 * Returns: the container type where this type is nested or NULL if this type is not a nested type.
8089 */
8090 MonoClass*
8091 mono_class_get_nesting_type (MonoClass *klass)
8092 {
8093 return klass->nested_in;
8094 }
8095
8096 /**
8097 * mono_class_get_rank:
8098 * @klass: the MonoClass to act on
8099 *
8100 * Returns: the rank for the array (the number of dimensions).
8101 */
8102 int
8103 mono_class_get_rank (MonoClass *klass)
8104 {
8105 return klass->rank;
8106 }
8107
8108 /**
8109 * mono_class_get_flags:
8110 * @klass: the MonoClass to act on
8111 *
8112 * The type flags from the TypeDef table from the metadata.
8113 * see the TYPE_ATTRIBUTE_* definitions on tabledefs.h for the
8114 * different values.
8115 *
8116 * Returns: the flags from the TypeDef table.
8117 */
8118 guint32
8119 mono_class_get_flags (MonoClass *klass)
8120 {
8121 return klass->flags;
8122 }
8123
8124 /**
8125 * mono_class_get_name
8126 * @klass: the MonoClass to act on
8127 *
8128 * Returns: the name of the class.
8129 */
8130 const char*
8131 mono_class_get_name (MonoClass *klass)
8132 {
8133 return klass->name;
8134 }
8135
8136 /**
8137 * mono_class_get_namespace:
8138 * @klass: the MonoClass to act on
8139 *
8140 * Returns: the namespace of the class.
8141 */
8142 const char*
8143 mono_class_get_namespace (MonoClass *klass)
8144 {
8145 return klass->name_space;
8146 }
8147
8148 /**
8149 * mono_class_get_type:
8150 * @klass: the MonoClass to act on
8151 *
8152 * This method returns the internal Type representation for the class.
8153 *
8154 * Returns: the MonoType from the class.
8155 */
8156 MonoType*
8157 mono_class_get_type (MonoClass *klass)
8158 {
8159 return &klass->byval_arg;
8160 }
8161
8162 /**
8163 * mono_class_get_type_token
8164 * @klass: the MonoClass to act on
8165 *
8166 * This method returns type token for the class.
8167 *
8168 * Returns: the type token for the class.
8169 */
8170 guint32
8171 mono_class_get_type_token (MonoClass *klass)
8172 {
8173 return klass->type_token;
8174 }
8175
8176 /**
8177 * mono_class_get_byref_type:
8178 * @klass: the MonoClass to act on
8179 *
8180 *
8181 */
8182 MonoType*
8183 mono_class_get_byref_type (MonoClass *klass)
8184 {
8185 return &klass->this_arg;
8186 }
8187
8188 /**
8189 * mono_class_num_fields:
8190 * @klass: the MonoClass to act on
8191 *
8192 * Returns: the number of static and instance fields in the class.
8193 */
8194 int
8195 mono_class_num_fields (MonoClass *klass)
8196 {
8197 return klass->field.count;
8198 }
8199
8200 /**
8201 * mono_class_num_methods:
8202 * @klass: the MonoClass to act on
8203 *
8204 * Returns: the number of methods in the class.
8205 */
8206 int
8207 mono_class_num_methods (MonoClass *klass)
8208 {
8209 return klass->method.count;
8210 }
8211
8212 /**
8213 * mono_class_num_properties
8214 * @klass: the MonoClass to act on
8215 *
8216 * Returns: the number of properties in the class.
8217 */
8218 int
8219 mono_class_num_properties (MonoClass *klass)
8220 {
8221 mono_class_setup_properties (klass);
8222
8223 return klass->ext->property.count;
8224 }
8225
8226 /**
8227 * mono_class_num_events:
8228 * @klass: the MonoClass to act on
8229 *
8230 * Returns: the number of events in the class.
8231 */
8232 int
8233 mono_class_num_events (MonoClass *klass)
8234 {
8235 mono_class_setup_events (klass);
8236
8237 return klass->ext->event.count;
8238 }
8239
8240 /**
8241 * mono_class_get_fields:
8242 * @klass: the MonoClass to act on
8243 *
8244 * This routine is an iterator routine for retrieving the fields in a class.
8245 *
8246 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8247 * iterate over all of the elements. When no more values are
8248 * available, the return value is NULL.
8249 *
8250 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
8251 */
8252 MonoClassField*
8253 mono_class_get_fields (MonoClass* klass, gpointer *iter)
8254 {
8255 MonoClassField* field;
8256 if (!iter)
8257 return NULL;
8258 if (!*iter) {
8259 mono_class_setup_fields_locking (klass);
8260 if (klass->exception_type)
8261 return NULL;
8262 /* start from the first */
8263 if (klass->field.count) {
8264 return *iter = &klass->fields [0];
8265 } else {
8266 /* no fields */
8267 return NULL;
8268 }
8269 }
8270 field = *iter;
8271 field++;
8272 if (field < &klass->fields [klass->field.count]) {
8273 return *iter = field;
8274 }
8275 return NULL;
8276 }
8277
8278 /**
8279 * mono_class_get_methods
8280 * @klass: the MonoClass to act on
8281 *
8282 * This routine is an iterator routine for retrieving the fields in a class.
8283 *
8284 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8285 * iterate over all of the elements. When no more values are
8286 * available, the return value is NULL.
8287 *
8288 * Returns: a MonoMethod on each iteration or NULL when no more methods are available.
8289 */
8290 MonoMethod*
8291 mono_class_get_methods (MonoClass* klass, gpointer *iter)
8292 {
8293 MonoMethod** method;
8294 if (!iter)
8295 return NULL;
8296 if (!*iter) {
8297 mono_class_setup_methods (klass);
8298
8299 /*
8300 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
8301 * FIXME we should better report this error to the caller
8302 */
8303 if (!klass->methods)
8304 return NULL;
8305 /* start from the first */
8306 if (klass->method.count) {
8307 *iter = &klass->methods [0];
8308 return klass->methods [0];
8309 } else {
8310 /* no method */
8311 return NULL;
8312 }
8313 }
8314 method = *iter;
8315 method++;
8316 if (method < &klass->methods [klass->method.count]) {
8317 *iter = method;
8318 return *method;
8319 }
8320 return NULL;
8321 }
8322
8323 /*
8324 * mono_class_get_virtual_methods:
8325 *
8326 * Iterate over the virtual methods of KLASS.
8327 *
8328 * LOCKING: Assumes the loader lock is held (because of the klass->methods check).
8329 */
8330 static MonoMethod*
8331 mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter)
8332 {
8333 MonoMethod** method;
8334 if (!iter)
8335 return NULL;
8336 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass) || mono_debug_using_mono_debugger ()) {
8337 if (!*iter) {
8338 mono_class_setup_methods (klass);
8339 /*
8340 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
8341 * FIXME we should better report this error to the caller
8342 */
8343 if (!klass->methods)
8344 return NULL;
8345 /* start from the first */
8346 method = &klass->methods [0];
8347 } else {
8348 method = *iter;
8349 method++;
8350 }
8351 while (method < &klass->methods [klass->method.count]) {
8352 if (*method && ((*method)->flags & METHOD_ATTRIBUTE_VIRTUAL))
8353 break;
8354 method ++;
8355 }
8356 if (method < &klass->methods [klass->method.count]) {
8357 *iter = method;
8358 return *method;
8359 } else {
8360 return NULL;
8361 }
8362 } else {
8363 /* Search directly in metadata to avoid calling setup_methods () */
8364 MonoMethod *res = NULL;
8365 int i, start_index;
8366
8367 if (!*iter) {
8368 start_index = 0;
8369 } else {
8370 start_index = GPOINTER_TO_UINT (*iter);
8371 }
8372
8373 for (i = start_index; i < klass->method.count; ++i) {
8374 guint32 flags;
8375
8376 /* class->method.first points into the methodptr table */
8377 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, klass->method.first + i, MONO_METHOD_FLAGS);
8378
8379 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
8380 break;
8381 }
8382
8383 if (i < klass->method.count) {
8384 res = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
8385 /* Add 1 here so the if (*iter) check fails */
8386 *iter = GUINT_TO_POINTER (i + 1);
8387 return res;
8388 } else {
8389 return NULL;
8390 }
8391 }
8392 }
8393
8394 /**
8395 * mono_class_get_properties:
8396 * @klass: the MonoClass to act on
8397 *
8398 * This routine is an iterator routine for retrieving the properties in a class.
8399 *
8400 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8401 * iterate over all of the elements. When no more values are
8402 * available, the return value is NULL.
8403 *
8404 * Returns: a @MonoProperty* on each invocation, or NULL when no more are available.
8405 */
8406 MonoProperty*
8407 mono_class_get_properties (MonoClass* klass, gpointer *iter)
8408 {
8409 MonoProperty* property;
8410 if (!iter)
8411 return NULL;
8412 if (!*iter) {
8413 mono_class_setup_properties (klass);
8414 /* start from the first */
8415 if (klass->ext->property.count) {
8416 return *iter = &klass->ext->properties [0];
8417 } else {
8418 /* no fields */
8419 return NULL;
8420 }
8421 }
8422 property = *iter;
8423 property++;
8424 if (property < &klass->ext->properties [klass->ext->property.count]) {
8425 return *iter = property;
8426 }
8427 return NULL;
8428 }
8429
8430 /**
8431 * mono_class_get_events:
8432 * @klass: the MonoClass to act on
8433 *
8434 * This routine is an iterator routine for retrieving the properties in a class.
8435 *
8436 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8437 * iterate over all of the elements. When no more values are
8438 * available, the return value is NULL.
8439 *
8440 * Returns: a @MonoEvent* on each invocation, or NULL when no more are available.
8441 */
8442 MonoEvent*
8443 mono_class_get_events (MonoClass* klass, gpointer *iter)
8444 {
8445 MonoEvent* event;
8446 if (!iter)
8447 return NULL;
8448 if (!*iter) {
8449 mono_class_setup_events (klass);
8450 /* start from the first */
8451 if (klass->ext->event.count) {
8452 return *iter = &klass->ext->events [0];
8453 } else {
8454 /* no fields */
8455 return NULL;
8456 }
8457 }
8458 event = *iter;
8459 event++;
8460 if (event < &klass->ext->events [klass->ext->event.count]) {
8461 return *iter = event;
8462 }
8463 return NULL;
8464 }
8465
8466 /**
8467 * mono_class_get_interfaces
8468 * @klass: the MonoClass to act on
8469 *
8470 * This routine is an iterator routine for retrieving the interfaces implemented by this class.
8471 *
8472 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8473 * iterate over all of the elements. When no more values are
8474 * available, the return value is NULL.
8475 *
8476 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
8477 */
8478 MonoClass*
8479 mono_class_get_interfaces (MonoClass* klass, gpointer *iter)
8480 {
8481 MonoError error;
8482 MonoClass** iface;
8483 if (!iter)
8484 return NULL;
8485 if (!*iter) {
8486 if (!klass->inited)
8487 mono_class_init (klass);
8488 if (!klass->interfaces_inited) {
8489 mono_class_setup_interfaces (klass, &error);
8490 if (!mono_error_ok (&error)) {
8491 mono_error_cleanup (&error);
8492 return NULL;
8493 }
8494 }
8495 /* start from the first */
8496 if (klass->interface_count) {
8497 *iter = &klass->interfaces [0];
8498 return klass->interfaces [0];
8499 } else {
8500 /* no interface */
8501 return NULL;
8502 }
8503 }
8504 iface = *iter;
8505 iface++;
8506 if (iface < &klass->interfaces [klass->interface_count]) {
8507 *iter = iface;
8508 return *iface;
8509 }
8510 return NULL;
8511 }
8512
8513 /**
8514 * mono_class_get_nested_types
8515 * @klass: the MonoClass to act on
8516 *
8517 * This routine is an iterator routine for retrieving the nested types of a class.
8518 * This works only if @klass is non-generic, or a generic type definition.
8519 *
8520 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8521 * iterate over all of the elements. When no more values are
8522 * available, the return value is NULL.
8523 *
8524 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
8525 */
8526 MonoClass*
8527 mono_class_get_nested_types (MonoClass* klass, gpointer *iter)
8528 {
8529 GList *item;
8530 int i;
8531
8532 if (!iter)
8533 return NULL;
8534 if (!klass->nested_classes_inited) {
8535 if (!klass->type_token)
8536 klass->nested_classes_inited = TRUE;
8537 mono_loader_lock ();
8538 if (!klass->nested_classes_inited) {
8539 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, 1);
8540 while (i) {
8541 MonoClass* nclass;
8542 guint32 cols [MONO_NESTED_CLASS_SIZE];
8543 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
8544 nclass = mono_class_create_from_typedef (klass->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED]);
8545 if (!nclass) {
8546 mono_loader_clear_error ();
8547 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
8548 continue;
8549 }
8550 mono_class_alloc_ext (klass);
8551 klass->ext->nested_classes = g_list_prepend_image (klass->image, klass->ext->nested_classes, nclass);
8552
8553 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
8554 }
8555 }
8556 mono_memory_barrier ();
8557 klass->nested_classes_inited = TRUE;
8558 mono_loader_unlock ();
8559 }
8560
8561 if (!*iter) {
8562 /* start from the first */
8563 if (klass->ext && klass->ext->nested_classes) {
8564 *iter = klass->ext->nested_classes;
8565 return klass->ext->nested_classes->data;
8566 } else {
8567 /* no nested types */
8568 return NULL;
8569 }
8570 }
8571 item = *iter;
8572 item = item->next;
8573 if (item) {
8574 *iter = item;
8575 return item->data;
8576 }
8577 return NULL;
8578 }
8579
8580 /**
8581 * mono_field_get_name:
8582 * @field: the MonoClassField to act on
8583 *
8584 * Returns: the name of the field.
8585 */
8586 const char*
8587 mono_field_get_name (MonoClassField *field)
8588 {
8589 return field->name;
8590 }
8591
8592 /**
8593 * mono_field_get_type:
8594 * @field: the MonoClassField to act on
8595 *
8596 * Returns: MonoType of the field.
8597 */
8598 MonoType*
8599 mono_field_get_type (MonoClassField *field)
8600 {
8601 MonoError error;
8602 MonoType *type = mono_field_get_type_checked (field, &error);
8603 if (!mono_error_ok (&error)) {
8604 mono_trace_warning (MONO_TRACE_TYPE, "Could not load field's type due to %s", mono_error_get_message (&error));
8605 mono_error_cleanup (&error);
8606 }
8607 return type;
8608 }
8609
8610
8611 /**
8612 * mono_field_get_type_checked:
8613 * @field: the MonoClassField to act on
8614 * @error: used to return any erro found while retrieving @field type
8615 *
8616 * Returns: MonoType of the field.
8617 */
8618 MonoType*
8619 mono_field_get_type_checked (MonoClassField *field, MonoError *error)
8620 {
8621 mono_error_init (error);
8622 if (!field->type)
8623 mono_field_resolve_type (field, error);
8624 return field->type;
8625 }
8626
8627 /**
8628 * mono_field_get_parent:
8629 * @field: the MonoClassField to act on
8630 *
8631 * Returns: MonoClass where the field was defined.
8632 */
8633 MonoClass*
8634 mono_field_get_parent (MonoClassField *field)
8635 {
8636 return field->parent;
8637 }
8638
8639 /**
8640 * mono_field_get_flags;
8641 * @field: the MonoClassField to act on
8642 *
8643 * The metadata flags for a field are encoded using the
8644 * FIELD_ATTRIBUTE_* constants. See the tabledefs.h file for details.
8645 *
8646 * Returns: the flags for the field.
8647 */
8648 guint32
8649 mono_field_get_flags (MonoClassField *field)
8650 {
8651 if (!field->type)
8652 return mono_field_resolve_flags (field);
8653 return field->type->attrs;
8654 }
8655
8656 /**
8657 * mono_field_get_offset;
8658 * @field: the MonoClassField to act on
8659 *
8660 * Returns: the field offset.
8661 */
8662 guint32
8663 mono_field_get_offset (MonoClassField *field)
8664 {
8665 return field->offset;
8666 }
8667
8668 static const char *
8669 mono_field_get_rva (MonoClassField *field)
8670 {
8671 guint32 rva;
8672 int field_index;
8673 MonoClass *klass = field->parent;
8674
8675 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA);
8676
8677 if (!klass->ext || !klass->ext->field_def_values) {
8678 mono_loader_lock ();
8679 mono_class_alloc_ext (klass);
8680 if (!klass->ext->field_def_values)
8681 klass->ext->field_def_values = mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * klass->field.count);
8682 mono_loader_unlock ();
8683 }
8684
8685 field_index = mono_field_get_index (field);
8686
8687 if (!klass->ext->field_def_values [field_index].data && !klass->image->dynamic) {
8688 mono_metadata_field_info (field->parent->image, klass->field.first + field_index, NULL, &rva, NULL);
8689 if (!rva)
8690 g_warning ("field %s in %s should have RVA data, but hasn't", mono_field_get_name (field), field->parent->name);
8691 klass->ext->field_def_values [field_index].data = mono_image_rva_map (field->parent->image, rva);
8692 }
8693
8694 return klass->ext->field_def_values [field_index].data;
8695 }
8696
8697 /**
8698 * mono_field_get_data;
8699 * @field: the MonoClassField to act on
8700 *
8701 * Returns: pointer to the metadata constant value or to the field
8702 * data if it has an RVA flag.
8703 */
8704 const char *
8705 mono_field_get_data (MonoClassField *field)
8706 {
8707 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT) {
8708 MonoTypeEnum def_type;
8709
8710 return mono_class_get_field_default_value (field, &def_type);
8711 } else if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
8712 return mono_field_get_rva (field);
8713 } else {
8714 return NULL;
8715 }
8716 }
8717
8718 /**
8719 * mono_property_get_name:
8720 * @prop: the MonoProperty to act on
8721 *
8722 * Returns: the name of the property
8723 */
8724 const char*
8725 mono_property_get_name (MonoProperty *prop)
8726 {
8727 return prop->name;
8728 }
8729
8730 /**
8731 * mono_property_get_set_method
8732 * @prop: the MonoProperty to act on.
8733 *
8734 * Returns: the setter method of the property (A MonoMethod)
8735 */
8736 MonoMethod*
8737 mono_property_get_set_method (MonoProperty *prop)
8738 {
8739 return prop->set;
8740 }
8741
8742 /**
8743 * mono_property_get_get_method
8744 * @prop: the MonoProperty to act on.
8745 *
8746 * Returns: the setter method of the property (A MonoMethod)
8747 */
8748 MonoMethod*
8749 mono_property_get_get_method (MonoProperty *prop)
8750 {
8751 return prop->get;
8752 }
8753
8754 /**
8755 * mono_property_get_parent:
8756 * @prop: the MonoProperty to act on.
8757 *
8758 * Returns: the MonoClass where the property was defined.
8759 */
8760 MonoClass*
8761 mono_property_get_parent (MonoProperty *prop)
8762 {
8763 return prop->parent;
8764 }
8765
8766 /**
8767 * mono_property_get_flags:
8768 * @prop: the MonoProperty to act on.
8769 *
8770 * The metadata flags for a property are encoded using the
8771 * PROPERTY_ATTRIBUTE_* constants. See the tabledefs.h file for details.
8772 *
8773 * Returns: the flags for the property.
8774 */
8775 guint32
8776 mono_property_get_flags (MonoProperty *prop)
8777 {
8778 return prop->attrs;
8779 }
8780
8781 /**
8782 * mono_event_get_name:
8783 * @event: the MonoEvent to act on
8784 *
8785 * Returns: the name of the event.
8786 */
8787 const char*
8788 mono_event_get_name (MonoEvent *event)
8789 {
8790 return event->name;
8791 }
8792
8793 /**
8794 * mono_event_get_add_method:
8795 * @event: The MonoEvent to act on.
8796 *
8797 * Returns: the @add' method for the event (a MonoMethod).
8798 */
8799 MonoMethod*
8800 mono_event_get_add_method (MonoEvent *event)
8801 {
8802 return event->add;
8803 }
8804
8805 /**
8806 * mono_event_get_remove_method:
8807 * @event: The MonoEvent to act on.
8808 *
8809 * Returns: the @remove method for the event (a MonoMethod).
8810 */
8811 MonoMethod*
8812 mono_event_get_remove_method (MonoEvent *event)
8813 {
8814 return event->remove;
8815 }
8816
8817 /**
8818 * mono_event_get_raise_method:
8819 * @event: The MonoEvent to act on.
8820 *
8821 * Returns: the @raise method for the event (a MonoMethod).
8822 */
8823 MonoMethod*
8824 mono_event_get_raise_method (MonoEvent *event)
8825 {
8826 return event->raise;
8827 }
8828
8829 /**
8830 * mono_event_get_parent:
8831 * @event: the MonoEvent to act on.
8832 *
8833 * Returns: the MonoClass where the event is defined.
8834 */
8835 MonoClass*
8836 mono_event_get_parent (MonoEvent *event)
8837 {
8838 return event->parent;
8839 }
8840
8841 /**
8842 * mono_event_get_flags
8843 * @event: the MonoEvent to act on.
8844 *
8845 * The metadata flags for an event are encoded using the
8846 * EVENT_* constants. See the tabledefs.h file for details.
8847 *
8848 * Returns: the flags for the event.
8849 */
8850 guint32
8851 mono_event_get_flags (MonoEvent *event)
8852 {
8853 return event->attrs;
8854 }
8855
8856 /**
8857 * mono_class_get_method_from_name:
8858 * @klass: where to look for the method
8859 * @name_space: name of the method
8860 * @param_count: number of parameters. -1 for any number.
8861 *
8862 * Obtains a MonoMethod with a given name and number of parameters.
8863 * It only works if there are no multiple signatures for any given method name.
8864 */
8865 MonoMethod *
8866 mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count)
8867 {
8868 return mono_class_get_method_from_name_flags (klass, name, param_count, 0);
8869 }
8870
8871 static MonoMethod*
8872 find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags)
8873 {
8874 MonoMethod *res = NULL;
8875 int i;
8876
8877 /* Search directly in the metadata to avoid calling setup_methods () */
8878 for (i = 0; i < klass->method.count; ++i) {
8879 guint32 cols [MONO_METHOD_SIZE];
8880 MonoMethod *method;
8881 MonoMethodSignature *sig;
8882
8883 /* class->method.first points into the methodptr table */
8884 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
8885
8886 if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
8887 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
8888 if (param_count == -1) {
8889 res = method;
8890 break;
8891 }
8892 sig = mono_method_signature (method);
8893 if (sig && sig->param_count == param_count) {
8894 res = method;
8895 break;
8896 }
8897 }
8898 }
8899
8900 return res;
8901 }
8902
8903 /**
8904 * mono_class_get_method_from_name_flags:
8905 * @klass: where to look for the method
8906 * @name_space: name of the method
8907 * @param_count: number of parameters. -1 for any number.
8908 * @flags: flags which must be set in the method
8909 *
8910 * Obtains a MonoMethod with a given name and number of parameters.
8911 * It only works if there are no multiple signatures for any given method name.
8912 */
8913 MonoMethod *
8914 mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int param_count, int flags)
8915 {
8916 MonoMethod *res = NULL;
8917 int i;
8918
8919 mono_class_init (klass);
8920
8921 if (klass->generic_class && !klass->methods) {
8922 res = mono_class_get_method_from_name_flags (klass->generic_class->container_class, name, param_count, flags);
8923 if (res)
8924 res = mono_class_inflate_generic_method_full (res, klass, mono_class_get_context (klass));
8925 return res;
8926 }
8927
8928 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
8929 mono_class_setup_methods (klass);
8930 /*
8931 We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
8932 See mono/tests/array_load_exception.il
8933 FIXME we should better report this error to the caller
8934 */
8935 if (!klass->methods)
8936 return NULL;
8937 for (i = 0; i < klass->method.count; ++i) {
8938 MonoMethod *method = klass->methods [i];
8939
8940 if (method->name[0] == name [0] &&
8941 !strcmp (name, method->name) &&
8942 (param_count == -1 || mono_method_signature (method)->param_count == param_count) &&
8943 ((method->flags & flags) == flags)) {
8944 res = method;
8945 break;
8946 }
8947 }
8948 }
8949 else {
8950 res = find_method_in_metadata (klass, name, param_count, flags);
8951 }
8952
8953 return res;
8954 }
8955
8956 /**
8957 * mono_class_set_failure:
8958 * @klass: class in which the failure was detected
8959 * @ex_type: the kind of exception/error to be thrown (later)
8960 * @ex_data: exception data (specific to each type of exception/error)
8961 *
8962 * Keep a detected failure informations in the class for later processing.
8963 * Note that only the first failure is kept.
8964 *
8965 * LOCKING: Acquires the loader lock.
8966 */
8967 gboolean
8968 mono_class_set_failure (MonoClass *klass, guint32 ex_type, void *ex_data)
8969 {
8970 if (klass->exception_type)
8971 return FALSE;
8972
8973 mono_loader_lock ();
8974 klass->exception_type = ex_type;
8975 if (ex_data)
8976 mono_image_property_insert (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA, ex_data);
8977 mono_loader_unlock ();
8978
8979 return TRUE;
8980 }
8981
8982 /*
8983 * mono_class_get_exception_data:
8984 *
8985 * Return the exception_data property of KLASS.
8986 *
8987 * LOCKING: Acquires the loader lock.
8988 */
8989 gpointer
8990 mono_class_get_exception_data (MonoClass *klass)
8991 {
8992 return mono_image_property_lookup (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA);
8993 }
8994
8995 /**
8996 * mono_classes_init:
8997 *
8998 * Initialize the resources used by this module.
8999 */
9000 void
9001 mono_classes_init (void)
9002 {
9003 mono_counters_register ("Inflated methods size",
9004 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_methods_size);
9005 mono_counters_register ("Inflated classes",
9006 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes);
9007 mono_counters_register ("Inflated classes size",
9008 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes_size);
9009 mono_counters_register ("MonoClass size",
9010 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &classes_size);
9011 mono_counters_register ("MonoClassExt size",
9012 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_ext_size);
9013 }
9014
9015 /**
9016 * mono_classes_cleanup:
9017 *
9018 * Free the resources used by this module.
9019 */
9020 void
9021 mono_classes_cleanup (void)
9022 {
9023 if (global_interface_bitset)
9024 mono_bitset_free (global_interface_bitset);
9025 }
9026
9027 /**
9028 * mono_class_get_exception_for_failure:
9029 * @klass: class in which the failure was detected
9030 *
9031 * Return a constructed MonoException than the caller can then throw
9032 * using mono_raise_exception - or NULL if no failure is present (or
9033 * doesn't result in an exception).
9034 */
9035 MonoException*
9036 mono_class_get_exception_for_failure (MonoClass *klass)
9037 {
9038 gpointer exception_data = mono_class_get_exception_data (klass);
9039
9040 switch (klass->exception_type) {
9041 case MONO_EXCEPTION_SECURITY_INHERITANCEDEMAND: {
9042 MonoDomain *domain = mono_domain_get ();
9043 MonoSecurityManager* secman = mono_security_manager_get_methods ();
9044 MonoMethod *method = exception_data;
9045 guint32 error = (method) ? MONO_METADATA_INHERITANCEDEMAND_METHOD : MONO_METADATA_INHERITANCEDEMAND_CLASS;
9046 MonoObject *exc = NULL;
9047 gpointer args [4];
9048
9049 args [0] = &error;
9050 args [1] = mono_assembly_get_object (domain, mono_image_get_assembly (klass->image));
9051 args [2] = mono_type_get_object (domain, &klass->byval_arg);
9052 args [3] = (method) ? mono_method_get_object (domain, method, NULL) : NULL;
9053
9054 mono_runtime_invoke (secman->inheritsecurityexception, NULL, args, &exc);
9055 return (MonoException*) exc;
9056 }
9057 case MONO_EXCEPTION_TYPE_LOAD: {
9058 MonoString *name;
9059 MonoException *ex;
9060 char *str = mono_type_get_full_name (klass);
9061 char *astr = klass->image->assembly? mono_stringify_assembly_name (&klass->image->assembly->aname): NULL;
9062 name = mono_string_new (mono_domain_get (), str);
9063 g_free (str);
9064 ex = mono_get_exception_type_load (name, astr);
9065 g_free (astr);
9066 return ex;
9067 }
9068 case MONO_EXCEPTION_MISSING_METHOD: {
9069 char *class_name = exception_data;
9070 char *assembly_name = class_name + strlen (class_name) + 1;
9071
9072 return mono_get_exception_missing_method (class_name, assembly_name);
9073 }
9074 case MONO_EXCEPTION_MISSING_FIELD: {
9075 char *class_name = exception_data;
9076 char *member_name = class_name + strlen (class_name) + 1;
9077
9078 return mono_get_exception_missing_field (class_name, member_name);
9079 }
9080 case MONO_EXCEPTION_FILE_NOT_FOUND: {
9081 char *msg_format = exception_data;
9082 char *assembly_name = msg_format + strlen (msg_format) + 1;
9083 char *msg = g_strdup_printf (msg_format, assembly_name);
9084 MonoException *ex;
9085
9086 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), assembly_name));
9087
9088 g_free (msg);
9089
9090 return ex;
9091 }
9092 case MONO_EXCEPTION_BAD_IMAGE: {
9093 return mono_get_exception_bad_image_format (exception_data);
9094 }
9095 default: {
9096 MonoLoaderError *error;
9097 MonoException *ex;
9098
9099 error = mono_loader_get_last_error ();
9100 if (error != NULL){
9101 ex = mono_loader_error_prepare_exception (error);
9102 return ex;
9103 }
9104
9105 /* TODO - handle other class related failures */
9106 return NULL;
9107 }
9108 }
9109 }
9110
9111 static gboolean
9112 is_nesting_type (MonoClass *outer_klass, MonoClass *inner_klass)
9113 {
9114 outer_klass = mono_class_get_generic_type_definition (outer_klass);
9115 inner_klass = mono_class_get_generic_type_definition (inner_klass);
9116 do {
9117 if (outer_klass == inner_klass)
9118 return TRUE;
9119 inner_klass = inner_klass->nested_in;
9120 } while (inner_klass);
9121 return FALSE;
9122 }
9123
9124 MonoClass *
9125 mono_class_get_generic_type_definition (MonoClass *klass)
9126 {
9127 return klass->generic_class ? klass->generic_class->container_class : klass;
9128 }
9129
9130 /*
9131 * Check if @klass is a subtype of @parent ignoring generic instantiations.
9132 *
9133 * Generic instantiations are ignored for all super types of @klass.
9134 *
9135 * Visibility checks ignoring generic instantiations.
9136 */
9137 gboolean
9138 mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent)
9139 {
9140 int i;
9141 klass = mono_class_get_generic_type_definition (klass);
9142 parent = mono_class_get_generic_type_definition (parent);
9143
9144 for (i = 0; i < klass->idepth; ++i) {
9145 if (parent == mono_class_get_generic_type_definition (klass->supertypes [i]))
9146 return TRUE;
9147 }
9148 return FALSE;
9149 }
9150 /*
9151 * Subtype can only access parent members with family protection if the site object
9152 * is subclass of Subtype. For example:
9153 * class A { protected int x; }
9154 * class B : A {
9155 * void valid_access () {
9156 * B b;
9157 * b.x = 0;
9158 * }
9159 * void invalid_access () {
9160 * A a;
9161 * a.x = 0;
9162 * }
9163 * }
9164 * */
9165 static gboolean
9166 is_valid_family_access (MonoClass *access_klass, MonoClass *member_klass, MonoClass *context_klass)
9167 {
9168 if (!mono_class_has_parent_and_ignore_generics (access_klass, member_klass))
9169 return FALSE;
9170
9171 if (context_klass == NULL)
9172 return TRUE;
9173 /*if access_klass is not member_klass context_klass must be type compat*/
9174 if (access_klass != member_klass && !mono_class_has_parent_and_ignore_generics (context_klass, access_klass))
9175 return FALSE;
9176 return TRUE;
9177 }
9178
9179 static gboolean
9180 can_access_internals (MonoAssembly *accessing, MonoAssembly* accessed)
9181 {
9182 GSList *tmp;
9183 if (accessing == accessed)
9184 return TRUE;
9185 if (!accessed || !accessing)
9186 return FALSE;
9187
9188 /* extra safety under CoreCLR - the runtime does not verify the strongname signatures
9189 * anywhere so untrusted friends are not safe to access platform's code internals */
9190 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR) {
9191 if (!mono_security_core_clr_can_access_internals (accessing->image, accessed->image))
9192 return FALSE;
9193 }
9194
9195 mono_assembly_load_friends (accessed);
9196 for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
9197 MonoAssemblyName *friend = tmp->data;
9198 /* Be conservative with checks */
9199 if (!friend->name)
9200 continue;
9201 if (strcmp (accessing->aname.name, friend->name))
9202 continue;
9203 if (friend->public_key_token [0]) {
9204 if (!accessing->aname.public_key_token [0])
9205 continue;
9206 if (!mono_public_tokens_are_equal (friend->public_key_token, accessing->aname.public_key_token))
9207 continue;
9208 }
9209 return TRUE;
9210 }
9211 return FALSE;
9212 }
9213
9214 /*
9215 * If klass is a generic type or if it is derived from a generic type, return the
9216 * MonoClass of the generic definition
9217 * Returns NULL if not found
9218 */
9219 static MonoClass*
9220 get_generic_definition_class (MonoClass *klass)
9221 {
9222 while (klass) {
9223 if (klass->generic_class && klass->generic_class->container_class)
9224 return klass->generic_class->container_class;
9225 klass = klass->parent;
9226 }
9227 return NULL;
9228 }
9229
9230 static gboolean
9231 can_access_instantiation (MonoClass *access_klass, MonoGenericInst *ginst)
9232 {
9233 int i;
9234 for (i = 0; i < ginst->type_argc; ++i) {
9235 MonoType *type = ginst->type_argv[i];
9236 switch (type->type) {
9237 case MONO_TYPE_SZARRAY:
9238 if (!can_access_type (access_klass, type->data.klass))
9239 return FALSE;
9240 break;
9241 case MONO_TYPE_ARRAY:
9242 if (!can_access_type (access_klass, type->data.array->eklass))
9243 return FALSE;
9244 break;
9245 case MONO_TYPE_PTR:
9246 if (!can_access_type (access_klass, mono_class_from_mono_type (type->data.type)))
9247 return FALSE;
9248 break;
9249 case MONO_TYPE_CLASS:
9250 case MONO_TYPE_VALUETYPE:
9251 case MONO_TYPE_GENERICINST:
9252 if (!can_access_type (access_klass, mono_class_from_mono_type (type)))
9253 return FALSE;
9254 }
9255 }
9256 return TRUE;
9257 }
9258
9259 static gboolean
9260 can_access_type (MonoClass *access_klass, MonoClass *member_klass)
9261 {
9262 int access_level;
9263
9264 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
9265 return TRUE;
9266
9267 if (access_klass->element_class && !access_klass->enumtype)
9268 access_klass = access_klass->element_class;
9269
9270 if (member_klass->element_class && !member_klass->enumtype)
9271 member_klass = member_klass->element_class;
9272
9273 access_level = member_klass->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK;
9274
9275 if (member_klass->byval_arg.type == MONO_TYPE_VAR || member_klass->byval_arg.type == MONO_TYPE_MVAR)
9276 return TRUE;
9277
9278 if (member_klass->generic_class && !can_access_instantiation (access_klass, member_klass->generic_class->context.class_inst))
9279 return FALSE;
9280
9281 if (is_nesting_type (access_klass, member_klass) || (access_klass->nested_in && is_nesting_type (access_klass->nested_in, member_klass)))
9282 return TRUE;
9283
9284 if (member_klass->nested_in && !can_access_type (access_klass, member_klass->nested_in))
9285 return FALSE;
9286
9287 /*Non nested type with nested visibility. We just fail it.*/
9288 if (access_level >= TYPE_ATTRIBUTE_NESTED_PRIVATE && access_level <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM && member_klass->nested_in == NULL)
9289 return FALSE;
9290
9291 switch (access_level) {
9292 case TYPE_ATTRIBUTE_NOT_PUBLIC:
9293 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
9294
9295 case TYPE_ATTRIBUTE_PUBLIC:
9296 return TRUE;
9297
9298 case TYPE_ATTRIBUTE_NESTED_PUBLIC:
9299 return TRUE;
9300
9301 case TYPE_ATTRIBUTE_NESTED_PRIVATE:
9302 return is_nesting_type (member_klass, access_klass);
9303
9304 case TYPE_ATTRIBUTE_NESTED_FAMILY:
9305 return mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
9306
9307 case TYPE_ATTRIBUTE_NESTED_ASSEMBLY:
9308 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
9309
9310 case TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM:
9311 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) &&
9312 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
9313
9314 case TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM:
9315 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) ||
9316 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
9317 }
9318 return FALSE;
9319 }
9320
9321 /* FIXME: check visibility of type, too */
9322 static gboolean
9323 can_access_member (MonoClass *access_klass, MonoClass *member_klass, MonoClass* context_klass, int access_level)
9324 {
9325 MonoClass *member_generic_def;
9326 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
9327 return TRUE;
9328
9329 if (((access_klass->generic_class && access_klass->generic_class->container_class) ||
9330 access_klass->generic_container) &&
9331 (member_generic_def = get_generic_definition_class (member_klass))) {
9332 MonoClass *access_container;
9333
9334 if (access_klass->generic_container)
9335 access_container = access_klass;
9336 else
9337 access_container = access_klass->generic_class->container_class;
9338
9339 if (can_access_member (access_container, member_generic_def, context_klass, access_level))
9340 return TRUE;
9341 }
9342
9343 /* Partition I 8.5.3.2 */
9344 /* the access level values are the same for fields and methods */
9345 switch (access_level) {
9346 case FIELD_ATTRIBUTE_COMPILER_CONTROLLED:
9347 /* same compilation unit */
9348 return access_klass->image == member_klass->image;
9349 case FIELD_ATTRIBUTE_PRIVATE:
9350 return access_klass == member_klass;
9351 case FIELD_ATTRIBUTE_FAM_AND_ASSEM:
9352 if (is_valid_family_access (access_klass, member_klass, context_klass) &&
9353 can_access_internals (access_klass->image->assembly, member_klass->image->assembly))
9354 return TRUE;
9355 return FALSE;
9356 case FIELD_ATTRIBUTE_ASSEMBLY:
9357 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
9358 case FIELD_ATTRIBUTE_FAMILY:
9359 if (is_valid_family_access (access_klass, member_klass, context_klass))
9360 return TRUE;
9361 return FALSE;
9362 case FIELD_ATTRIBUTE_FAM_OR_ASSEM:
9363 if (is_valid_family_access (access_klass, member_klass, context_klass))
9364 return TRUE;
9365 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
9366 case FIELD_ATTRIBUTE_PUBLIC:
9367 return TRUE;
9368 }
9369 return FALSE;
9370 }
9371
9372 gboolean
9373 mono_method_can_access_field (MonoMethod *method, MonoClassField *field)
9374 {
9375 /* FIXME: check all overlapping fields */
9376 int can = can_access_member (method->klass, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
9377 if (!can) {
9378 MonoClass *nested = method->klass->nested_in;
9379 while (nested) {
9380 can = can_access_member (nested, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
9381 if (can)
9382 return TRUE;
9383 nested = nested->nested_in;
9384 }
9385 }
9386 return can;
9387 }
9388
9389 gboolean
9390 mono_method_can_access_method (MonoMethod *method, MonoMethod *called)
9391 {
9392 int can = can_access_member (method->klass, called->klass, NULL, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
9393 if (!can) {
9394 MonoClass *nested = method->klass->nested_in;
9395 while (nested) {
9396 can = can_access_member (nested, called->klass, NULL, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
9397 if (can)
9398 return TRUE;
9399 nested = nested->nested_in;
9400 }
9401 }
9402 /*
9403 * FIXME:
9404 * with generics calls to explicit interface implementations can be expressed
9405 * directly: the method is private, but we must allow it. This may be opening
9406 * a hole or the generics code should handle this differently.
9407 * Maybe just ensure the interface type is public.
9408 */
9409 if ((called->flags & METHOD_ATTRIBUTE_VIRTUAL) && (called->flags & METHOD_ATTRIBUTE_FINAL))
9410 return TRUE;
9411 return can;
9412 }
9413
9414 /*
9415 * mono_method_can_access_method_full:
9416 * @method: The caller method
9417 * @called: The called method
9418 * @context_klass: The static type on stack of the owner @called object used
9419 *
9420 * This function must be used with instance calls, as they have more strict family accessibility.
9421 * It can be used with static methods, but context_klass should be NULL.
9422 *
9423 * Returns: TRUE if caller have proper visibility and acessibility to @called
9424 */
9425 gboolean
9426 mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass)
9427 {
9428 MonoClass *access_class = method->klass;
9429 MonoClass *member_class = called->klass;
9430 int can = can_access_member (access_class, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
9431 if (!can) {
9432 MonoClass *nested = access_class->nested_in;
9433 while (nested) {
9434 can = can_access_member (nested, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
9435 if (can)
9436 break;
9437 nested = nested->nested_in;
9438 }
9439 }
9440
9441 if (!can)
9442 return FALSE;
9443
9444 can = can_access_type (access_class, member_class);
9445 if (!can) {
9446 MonoClass *nested = access_class->nested_in;
9447 while (nested) {
9448 can = can_access_type (nested, member_class);
9449 if (can)
9450 break;
9451 nested = nested->nested_in;
9452 }
9453 }
9454
9455 if (!can)
9456 return FALSE;
9457
9458 if (called->is_inflated) {
9459 MonoMethodInflated * infl = (MonoMethodInflated*)called;
9460 if (infl->context.method_inst && !can_access_instantiation (access_class, infl->context.method_inst))
9461 return FALSE;
9462 }
9463
9464 return TRUE;
9465 }
9466
9467
9468 /*
9469 * mono_method_can_access_field_full:
9470 * @method: The caller method
9471 * @field: The accessed field
9472 * @context_klass: The static type on stack of the owner @field object used
9473 *
9474 * This function must be used with instance fields, as they have more strict family accessibility.
9475 * It can be used with static fields, but context_klass should be NULL.
9476 *
9477 * Returns: TRUE if caller have proper visibility and acessibility to @field
9478 */
9479 gboolean
9480 mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass)
9481 {
9482 MonoClass *access_class = method->klass;
9483 MonoClass *member_class = field->parent;
9484 /* FIXME: check all overlapping fields */
9485 int can = can_access_member (access_class, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
9486 if (!can) {
9487 MonoClass *nested = access_class->nested_in;
9488 while (nested) {
9489 can = can_access_member (nested, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
9490 if (can)
9491 break;
9492 nested = nested->nested_in;
9493 }
9494 }
9495
9496 if (!can)
9497 return FALSE;
9498
9499 can = can_access_type (access_class, member_class);
9500 if (!can) {
9501 MonoClass *nested = access_class->nested_in;
9502 while (nested) {
9503 can = can_access_type (nested, member_class);
9504 if (can)
9505 break;
9506 nested = nested->nested_in;
9507 }
9508 }
9509
9510 if (!can)
9511 return FALSE;
9512 return TRUE;
9513 }
9514
9515 /**
9516 * mono_type_is_valid_enum_basetype:
9517 * @type: The MonoType to check
9518 *
9519 * Returns: TRUE if the type can be used as the basetype of an enum
9520 */
9521 gboolean mono_type_is_valid_enum_basetype (MonoType * type) {
9522 switch (type->type) {
9523 case MONO_TYPE_I1:
9524 case MONO_TYPE_U1:
9525 case MONO_TYPE_BOOLEAN:
9526 case MONO_TYPE_I2:
9527 case MONO_TYPE_U2:
9528 case MONO_TYPE_CHAR:
9529 case MONO_TYPE_I4:
9530 case MONO_TYPE_U4:
9531 case MONO_TYPE_I8:
9532 case MONO_TYPE_U8:
9533 case MONO_TYPE_I:
9534 case MONO_TYPE_U:
9535 return TRUE;
9536 }
9537 return FALSE;
9538 }
9539
9540 /**
9541 * mono_class_is_valid_enum:
9542 * @klass: An enum class to be validated
9543 *
9544 * This method verify the required properties an enum should have.
9545 *
9546 * Returns: TRUE if the informed enum class is valid
9547 *
9548 * FIXME: TypeBuilder enums are allowed to implement interfaces, but since they cannot have methods, only empty interfaces are possible
9549 * FIXME: enum types are not allowed to have a cctor, but mono_reflection_create_runtime_class sets has_cctor to 1 for all types
9550 * FIXME: TypeBuilder enums can have any kind of static fields, but the spec is very explicit about that (P II 14.3)
9551 */
9552 gboolean mono_class_is_valid_enum (MonoClass *klass) {
9553 MonoClassField * field;
9554 gpointer iter = NULL;
9555 gboolean found_base_field = FALSE;
9556
9557 g_assert (klass->enumtype);
9558 /* we cannot test against mono_defaults.enum_class, or mcs won't be able to compile the System namespace*/
9559 if (!klass->parent || strcmp (klass->parent->name, "Enum") || strcmp (klass->parent->name_space, "System") ) {
9560 return FALSE;
9561 }
9562
9563 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) != TYPE_ATTRIBUTE_AUTO_LAYOUT)
9564 return FALSE;
9565
9566 while ((field = mono_class_get_fields (klass, &iter))) {
9567 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
9568 if (found_base_field)
9569 return FALSE;
9570 found_base_field = TRUE;
9571 if (!mono_type_is_valid_enum_basetype (field->type))
9572 return FALSE;
9573 }
9574 }
9575
9576 if (!found_base_field)
9577 return FALSE;
9578
9579 if (klass->method.count > 0)
9580 return FALSE;
9581
9582 return TRUE;
9583 }
9584
9585 gboolean
9586 mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass)
9587 {
9588 return gklass->context.class_inst == gklass->container_class->generic_container->context.class_inst;
9589 }
9590
9591 /*
9592 * mono_class_setup_interface_id:
9593 *
9594 * Initializes MonoClass::interface_id if required.
9595 *
9596 * LOCKING: Acquires the loader lock.
9597 */
9598 void
9599 mono_class_setup_interface_id (MonoClass *class)
9600 {
9601 mono_loader_lock ();
9602 if (MONO_CLASS_IS_INTERFACE (class) && !class->interface_id)
9603 class->interface_id = mono_get_unique_iid (class);
9604 mono_loader_unlock ();
9605 }
9606
9607 /*
9608 * mono_class_alloc_ext:
9609 *
9610 * Allocate klass->ext if not already done.
9611 * LOCKING: Assumes the loader lock is held.
9612 */
9613 void
9614 mono_class_alloc_ext (MonoClass *klass)
9615 {
9616 if (!klass->ext) {
9617 klass->ext = mono_class_alloc0 (klass, sizeof (MonoClassExt));
9618 class_ext_size += sizeof (MonoClassExt);
9619 }
9620 }
9621
9622 /*
9623 * mono_class_setup_interfaces:
9624 *
9625 * Initialize class->interfaces/interfaces_count.
9626 * LOCKING: Acquires the loader lock.
9627 * This function can fail the type.
9628 */
9629 void
9630 mono_class_setup_interfaces (MonoClass *klass, MonoError *error)
9631 {
9632 int i;
9633
9634 mono_error_init (error);
9635
9636 if (klass->interfaces_inited)
9637 return;
9638
9639 mono_loader_lock ();
9640
9641 if (klass->interfaces_inited) {
9642 mono_loader_unlock ();
9643 return;
9644 }
9645
9646 if (klass->rank == 1 && klass->byval_arg.type != MONO_TYPE_ARRAY && mono_defaults.generic_ilist_class) {
9647 MonoType *args [1];
9648
9649 /* generic IList, ICollection, IEnumerable */
9650 klass->interface_count = 1;
9651 klass->interfaces = mono_image_alloc0 (klass->image, sizeof (MonoClass*) * klass->interface_count);
9652
9653 args [0] = &klass->element_class->byval_arg;
9654 klass->interfaces [0] = mono_class_bind_generic_parameters (
9655 mono_defaults.generic_ilist_class, 1, args, FALSE);
9656 } else if (klass->generic_class) {
9657 MonoClass *gklass = klass->generic_class->container_class;
9658
9659 klass->interface_count = gklass->interface_count;
9660 klass->interfaces = mono_class_new0 (klass, MonoClass *, klass->interface_count);
9661 for (i = 0; i < klass->interface_count; i++) {
9662 klass->interfaces [i] = mono_class_inflate_generic_class_checked (gklass->interfaces [i], mono_generic_class_get_context (klass->generic_class), error);
9663 if (!mono_error_ok (error)) {
9664 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not setup the interfaces"));
9665 klass->interfaces = NULL;
9666 return;
9667 }
9668 }
9669 }
9670
9671 mono_memory_barrier ();
9672
9673 klass->interfaces_inited = TRUE;
9674
9675 mono_loader_unlock ();
9676 }
9677
9678 static void
9679 mono_field_resolve_type (MonoClassField *field, MonoError *error)
9680 {
9681 MonoClass *class = field->parent;
9682 MonoImage *image = class->image;
9683 MonoClass *gtd = class->generic_class ? mono_class_get_generic_type_definition (class) : NULL;
9684 int field_idx = field - class->fields;
9685
9686 mono_error_init (error);
9687
9688 if (gtd) {
9689 MonoClassField *gfield = &gtd->fields [field_idx];
9690 MonoType *gtype = mono_field_get_type_checked (gfield, error);
9691 if (!mono_error_ok (error)) {
9692 char *err_msg = g_strdup_printf ("Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
9693 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, err_msg);
9694 g_free (err_msg);
9695 }
9696
9697 field->type = mono_class_inflate_generic_type_no_copy (image, gtype, mono_class_get_context (class), error);
9698 if (!mono_error_ok (error)) {
9699 char *err_msg = g_strdup_printf ("Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
9700 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, err_msg);
9701 g_free (err_msg);
9702 }
9703 } else {
9704 const char *sig;
9705 guint32 cols [MONO_FIELD_SIZE];
9706 MonoGenericContainer *container = NULL;
9707 int idx = class->field.first + field_idx;
9708
9709 /*FIXME, in theory we do not lazy load SRE fields*/
9710 g_assert (!image->dynamic);
9711
9712 if (class->generic_container) {
9713 container = class->generic_container;
9714 } else if (gtd) {
9715 container = gtd->generic_container;
9716 g_assert (container);
9717 }
9718
9719 /* class->field.first and idx points into the fieldptr table */
9720 mono_metadata_decode_table_row (image, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
9721
9722 if (!mono_verifier_verify_field_signature (image, cols [MONO_FIELD_SIGNATURE], NULL)) {
9723 mono_error_set_type_load_class (error, class, "Could not verify field %s signature", field->name);
9724 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
9725 return;
9726 }
9727
9728 sig = mono_metadata_blob_heap (image, cols [MONO_FIELD_SIGNATURE]);
9729
9730 mono_metadata_decode_value (sig, &sig);
9731 /* FIELD signature == 0x06 */
9732 g_assert (*sig == 0x06);
9733 field->type = mono_metadata_parse_type_full (image, container, MONO_PARSE_FIELD, cols [MONO_FIELD_FLAGS], sig + 1, &sig);
9734 if (!field->type) {
9735 mono_error_set_type_load_class (error, class, "Could not load field %s type", field->name);
9736 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
9737 mono_loader_clear_error ();
9738 }
9739 }
9740 }
9741
9742 static guint32
9743 mono_field_resolve_flags (MonoClassField *field)
9744 {
9745 MonoClass *class = field->parent;
9746 MonoImage *image = class->image;
9747 MonoClass *gtd = class->generic_class ? mono_class_get_generic_type_definition (class) : NULL;
9748 int field_idx = field - class->fields;
9749
9750
9751 if (gtd) {
9752 MonoClassField *gfield = &gtd->fields [field_idx];
9753 return mono_field_get_flags (gfield);
9754 } else {
9755 int idx = class->field.first + field_idx;
9756
9757 /*FIXME, in theory we do not lazy load SRE fields*/
9758 g_assert (!image->dynamic);
9759
9760 return mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_FLAGS);
9761 }
9762 }
9763
9764 /**
9765 * mono_class_setup_basic_field_info:
9766 * @class: The class to initialize
9767 *
9768 * Initializes the class->fields array of fields.
9769 * Aquires the loader lock.
9770 */
9771 static void
9772 mono_class_setup_basic_field_info_locking (MonoClass *class)
9773 {
9774 mono_loader_lock ();
9775 mono_class_setup_basic_field_info (class);
9776 mono_loader_unlock ();
9777 }
9778
9779 /**
9780 * mono_class_get_fields_lazy:
9781 * @klass: the MonoClass to act on
9782 *
9783 * This routine is an iterator routine for retrieving the fields in a class.
9784 * Only minimal information about fields are loaded. Accessors must be used
9785 * for all MonoClassField returned.
9786 *
9787 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9788 * iterate over all of the elements. When no more values are
9789 * available, the return value is NULL.
9790 *
9791 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
9792 */
9793 MonoClassField*
9794 mono_class_get_fields_lazy (MonoClass* klass, gpointer *iter)
9795 {
9796 MonoClassField* field;
9797 if (!iter)
9798 return NULL;
9799 if (!*iter) {
9800 mono_class_setup_basic_field_info_locking (klass);
9801 if (!klass->fields)
9802 return NULL;
9803 /* start from the first */
9804 if (klass->field.count) {
9805 return *iter = &klass->fields [0];
9806 } else {
9807 /* no fields */
9808 return NULL;
9809 }
9810 }
9811 field = *iter;
9812 field++;
9813 if (field < &klass->fields [klass->field.count]) {
9814 return *iter = field;
9815 }
9816 return NULL;
9817 }
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