?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
2010-04-06 Rodrigo Kumpera <rkumpera@novell.com>
[mono-project.git] / mono / metadata / class.c
blob48ac745b8e74565a884dccdcddc84656088300eb
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
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 gboolean mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass);
66
67
68 void (*mono_debugger_class_init_func) (MonoClass *klass) = NULL;
69 void (*mono_debugger_class_loaded_methods_func) (MonoClass *klass) = NULL;
70
71 /*
72 * mono_class_from_typeref:
73 * @image: a MonoImage
74 * @type_token: a TypeRef token
75 *
76 * Creates the MonoClass* structure representing the type defined by
77 * the typeref token valid inside @image.
78 * Returns: the MonoClass* representing the typeref token, NULL ifcould
79 * not be loaded.
80 */
81 MonoClass *
82 mono_class_from_typeref (MonoImage *image, guint32 type_token)
83 {
84 guint32 cols [MONO_TYPEREF_SIZE];
85 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
86 guint32 idx;
87 const char *name, *nspace;
88 MonoClass *res;
89 MonoImage *module;
90
91 mono_metadata_decode_row (t, (type_token&0xffffff)-1, cols, MONO_TYPEREF_SIZE);
92
93 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
94 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
95
96 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLTION_SCOPE_BITS;
97 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLTION_SCOPE_MASK) {
98 case MONO_RESOLTION_SCOPE_MODULE:
99 if (!idx)
100 g_error ("null ResolutionScope not yet handled");
101 /* a typedef in disguise */
102 return mono_class_from_name (image, nspace, name);
103 case MONO_RESOLTION_SCOPE_MODULEREF:
104 module = mono_image_load_module (image, idx);
105 if (module)
106 return mono_class_from_name (module, nspace, name);
107 else {
108 char *msg = g_strdup_printf ("%s%s%s", nspace, nspace [0] ? "." : "", name);
109 char *human_name;
110
111 human_name = mono_stringify_assembly_name (&image->assembly->aname);
112 mono_loader_set_error_type_load (msg, human_name);
113 g_free (msg);
114 g_free (human_name);
115
116 return NULL;
117 }
118 case MONO_RESOLTION_SCOPE_TYPEREF: {
119 MonoClass *enclosing;
120 GList *tmp;
121
122 if (idx == mono_metadata_token_index (type_token)) {
123 mono_loader_set_error_bad_image (g_strdup_printf ("Image %s with self-referencing typeref token %08x.", image->name, type_token));
124 return NULL;
125 }
126
127 enclosing = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | idx);
128 if (!enclosing)
129 return NULL;
130
131 if (enclosing->nested_classes_inited && enclosing->ext) {
132 /* Micro-optimization: don't scan the metadata tables if enclosing is already inited */
133 for (tmp = enclosing->ext->nested_classes; tmp; tmp = tmp->next) {
134 res = tmp->data;
135 if (strcmp (res->name, name) == 0)
136 return res;
137 }
138 } else {
139 /* Don't call mono_class_init as we might've been called by it recursively */
140 int i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, 1);
141 while (i) {
142 guint32 class_nested = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, MONO_NESTED_CLASS_NESTED);
143 guint32 string_offset = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_TYPEDEF], class_nested - 1, MONO_TYPEDEF_NAME);
144 const char *nname = mono_metadata_string_heap (enclosing->image, string_offset);
145
146 if (strcmp (nname, name) == 0)
147 return mono_class_create_from_typedef (enclosing->image, MONO_TOKEN_TYPE_DEF | class_nested);
148
149 i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, i + 1);
150 }
151 }
152 g_warning ("TypeRef ResolutionScope not yet handled (%d) for %s.%s in image %s", idx, nspace, name, image->name);
153 return NULL;
154 }
155 case MONO_RESOLTION_SCOPE_ASSEMBLYREF:
156 break;
157 }
158
159 if (idx > image->tables [MONO_TABLE_ASSEMBLYREF].rows) {
160 mono_loader_set_error_bad_image (g_strdup_printf ("Image %s with invalid assemblyref token %08x.", image->name, idx));
161 return NULL;
162 }
163
164 if (!image->references || !image->references [idx - 1])
165 mono_assembly_load_reference (image, idx - 1);
166 g_assert (image->references [idx - 1]);
167
168 /* If the assembly did not load, register this as a type load exception */
169 if (image->references [idx - 1] == REFERENCE_MISSING){
170 MonoAssemblyName aname;
171 char *human_name;
172
173 mono_assembly_get_assemblyref (image, idx - 1, &aname);
174 human_name = mono_stringify_assembly_name (&aname);
175 mono_loader_set_error_assembly_load (human_name, image->assembly->ref_only);
176 g_free (human_name);
177
178 return NULL;
179 }
180
181 return mono_class_from_name (image->references [idx - 1]->image, nspace, name);
182 }
183
184
185 static void *
186 mono_image_memdup (MonoImage *image, void *data, guint size)
187 {
188 void *res = mono_image_alloc (image, size);
189 memcpy (res, data, size);
190 return res;
191 }
192
193 /* Copy everything mono_metadata_free_array free. */
194 MonoArrayType *
195 mono_dup_array_type (MonoImage *image, MonoArrayType *a)
196 {
197 if (image) {
198 a = mono_image_memdup (image, a, sizeof (MonoArrayType));
199 if (a->sizes)
200 a->sizes = mono_image_memdup (image, a->sizes, a->numsizes * sizeof (int));
201 if (a->lobounds)
202 a->lobounds = mono_image_memdup (image, a->lobounds, a->numlobounds * sizeof (int));
203 } else {
204 a = g_memdup (a, sizeof (MonoArrayType));
205 if (a->sizes)
206 a->sizes = g_memdup (a->sizes, a->numsizes * sizeof (int));
207 if (a->lobounds)
208 a->lobounds = g_memdup (a->lobounds, a->numlobounds * sizeof (int));
209 }
210 return a;
211 }
212
213 /* Copy everything mono_metadata_free_method_signature free. */
214 MonoMethodSignature*
215 mono_metadata_signature_deep_dup (MonoImage *image, MonoMethodSignature *sig)
216 {
217 int i;
218
219 sig = mono_metadata_signature_dup_full (image, sig);
220
221 sig->ret = mono_metadata_type_dup (image, sig->ret);
222 for (i = 0; i < sig->param_count; ++i)
223 sig->params [i] = mono_metadata_type_dup (image, sig->params [i]);
224
225 return sig;
226 }
227
228 static void
229 _mono_type_get_assembly_name (MonoClass *klass, GString *str)
230 {
231 MonoAssembly *ta = klass->image->assembly;
232
233 g_string_append_printf (
234 str, ", %s, Version=%d.%d.%d.%d, Culture=%s, PublicKeyToken=%s%s",
235 ta->aname.name,
236 ta->aname.major, ta->aname.minor, ta->aname.build, ta->aname.revision,
237 ta->aname.culture && *ta->aname.culture? ta->aname.culture: "neutral",
238 ta->aname.public_key_token [0] ? (char *)ta->aname.public_key_token : "null",
239 (ta->aname.flags & ASSEMBLYREF_RETARGETABLE_FLAG) ? ", Retargetable=Yes" : "");
240 }
241
242 static inline void
243 mono_type_name_check_byref (MonoType *type, GString *str)
244 {
245 if (type->byref)
246 g_string_append_c (str, '&');
247 }
248
249 static void
250 mono_type_get_name_recurse (MonoType *type, GString *str, gboolean is_recursed,
251 MonoTypeNameFormat format)
252 {
253 MonoClass *klass;
254
255 switch (type->type) {
256 case MONO_TYPE_ARRAY: {
257 int i, rank = type->data.array->rank;
258 MonoTypeNameFormat nested_format;
259
260 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
261 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
262
263 mono_type_get_name_recurse (
264 &type->data.array->eklass->byval_arg, str, FALSE, nested_format);
265 g_string_append_c (str, '[');
266 if (rank == 1)
267 g_string_append_c (str, '*');
268 for (i = 1; i < rank; i++)
269 g_string_append_c (str, ',');
270 g_string_append_c (str, ']');
271
272 mono_type_name_check_byref (type, str);
273
274 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
275 _mono_type_get_assembly_name (type->data.array->eklass, str);
276 break;
277 }
278 case MONO_TYPE_SZARRAY: {
279 MonoTypeNameFormat nested_format;
280
281 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
282 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
283
284 mono_type_get_name_recurse (
285 &type->data.klass->byval_arg, str, FALSE, nested_format);
286 g_string_append (str, "[]");
287
288 mono_type_name_check_byref (type, str);
289
290 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
291 _mono_type_get_assembly_name (type->data.klass, str);
292 break;
293 }
294 case MONO_TYPE_PTR: {
295 MonoTypeNameFormat nested_format;
296
297 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
298 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
299
300 mono_type_get_name_recurse (
301 type->data.type, str, FALSE, nested_format);
302 g_string_append_c (str, '*');
303
304 mono_type_name_check_byref (type, str);
305
306 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
307 _mono_type_get_assembly_name (mono_class_from_mono_type (type->data.type), str);
308 break;
309 }
310 case MONO_TYPE_VAR:
311 case MONO_TYPE_MVAR:
312 if (!mono_generic_param_info (type->data.generic_param))
313 g_string_append_printf (str, "%s%d", type->type == MONO_TYPE_VAR ? "!" : "!!", type->data.generic_param->num);
314 else
315 g_string_append (str, mono_generic_param_info (type->data.generic_param)->name);
316
317 mono_type_name_check_byref (type, str);
318
319 break;
320 default:
321 klass = mono_class_from_mono_type (type);
322 if (klass->nested_in) {
323 mono_type_get_name_recurse (
324 &klass->nested_in->byval_arg, str, TRUE, format);
325 if (format == MONO_TYPE_NAME_FORMAT_IL)
326 g_string_append_c (str, '.');
327 else
328 g_string_append_c (str, '+');
329 } else if (*klass->name_space) {
330 g_string_append (str, klass->name_space);
331 g_string_append_c (str, '.');
332 }
333 if (format == MONO_TYPE_NAME_FORMAT_IL) {
334 char *s = strchr (klass->name, '`');
335 int len = s ? s - klass->name : strlen (klass->name);
336
337 g_string_append_len (str, klass->name, len);
338 } else
339 g_string_append (str, klass->name);
340 if (is_recursed)
341 break;
342 if (klass->generic_class) {
343 MonoGenericClass *gclass = klass->generic_class;
344 MonoGenericInst *inst = gclass->context.class_inst;
345 MonoTypeNameFormat nested_format;
346 int i;
347
348 nested_format = format == MONO_TYPE_NAME_FORMAT_FULL_NAME ?
349 MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED : format;
350
351 if (format == MONO_TYPE_NAME_FORMAT_IL)
352 g_string_append_c (str, '<');
353 else
354 g_string_append_c (str, '[');
355 for (i = 0; i < inst->type_argc; i++) {
356 MonoType *t = inst->type_argv [i];
357
358 if (i)
359 g_string_append_c (str, ',');
360 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
361 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
362 g_string_append_c (str, '[');
363 mono_type_get_name_recurse (inst->type_argv [i], str, FALSE, nested_format);
364 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
365 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
366 g_string_append_c (str, ']');
367 }
368 if (format == MONO_TYPE_NAME_FORMAT_IL)
369 g_string_append_c (str, '>');
370 else
371 g_string_append_c (str, ']');
372 } else if (klass->generic_container &&
373 (format != MONO_TYPE_NAME_FORMAT_FULL_NAME) &&
374 (format != MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)) {
375 int i;
376
377 if (format == MONO_TYPE_NAME_FORMAT_IL)
378 g_string_append_c (str, '<');
379 else
380 g_string_append_c (str, '[');
381 for (i = 0; i < klass->generic_container->type_argc; i++) {
382 if (i)
383 g_string_append_c (str, ',');
384 g_string_append (str, mono_generic_container_get_param_info (klass->generic_container, i)->name);
385 }
386 if (format == MONO_TYPE_NAME_FORMAT_IL)
387 g_string_append_c (str, '>');
388 else
389 g_string_append_c (str, ']');
390 }
391
392 mono_type_name_check_byref (type, str);
393
394 if ((format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
395 (type->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
396 _mono_type_get_assembly_name (klass, str);
397 break;
398 }
399 }
400
401 /**
402 * mono_type_get_name_full:
403 * @type: a type
404 * @format: the format for the return string.
405 *
406 *
407 * Returns: the string representation in a number of formats:
408 *
409 * if format is MONO_TYPE_NAME_FORMAT_REFLECTION, the return string is
410 * returned in the formatrequired by System.Reflection, this is the
411 * inverse of mono_reflection_parse_type ().
412 *
413 * if format is MONO_TYPE_NAME_FORMAT_IL, it returns a syntax that can
414 * be used by the IL assembler.
415 *
416 * if format is MONO_TYPE_NAME_FORMAT_FULL_NAME
417 *
418 * if format is MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED
419 */
420 char*
421 mono_type_get_name_full (MonoType *type, MonoTypeNameFormat format)
422 {
423 GString* result;
424
425 result = g_string_new ("");
426
427 mono_type_get_name_recurse (type, result, FALSE, format);
428
429 return g_string_free (result, FALSE);
430 }
431
432 /**
433 * mono_type_get_full_name:
434 * @class: a class
435 *
436 * Returns: the string representation for type as required by System.Reflection.
437 * The inverse of mono_reflection_parse_type ().
438 */
439 char *
440 mono_type_get_full_name (MonoClass *class)
441 {
442 return mono_type_get_name_full (mono_class_get_type (class), MONO_TYPE_NAME_FORMAT_REFLECTION);
443 }
444
445 /**
446 * mono_type_get_name:
447 * @type: a type
448 *
449 * Returns: the string representation for type as it would be represented in IL code.
450 */
451 char*
452 mono_type_get_name (MonoType *type)
453 {
454 return mono_type_get_name_full (type, MONO_TYPE_NAME_FORMAT_IL);
455 }
456
457 /*
458 * mono_type_get_underlying_type:
459 * @type: a type
460 *
461 * Returns: the MonoType for the underlying integer type if @type
462 * is an enum and byref is false, otherwise the type itself.
463 */
464 MonoType*
465 mono_type_get_underlying_type (MonoType *type)
466 {
467 if (type->type == MONO_TYPE_VALUETYPE && type->data.klass->enumtype && !type->byref)
468 return mono_class_enum_basetype (type->data.klass);
469 if (type->type == MONO_TYPE_GENERICINST && type->data.generic_class->container_class->enumtype && !type->byref)
470 return mono_class_enum_basetype (type->data.generic_class->container_class);
471 return type;
472 }
473
474 /*
475 * mono_class_is_open_constructed_type:
476 * @type: a type
477 *
478 * Returns TRUE if type represents a generics open constructed type
479 * (not all the type parameters required for the instantiation have
480 * been provided).
481 */
482 gboolean
483 mono_class_is_open_constructed_type (MonoType *t)
484 {
485 switch (t->type) {
486 case MONO_TYPE_VAR:
487 case MONO_TYPE_MVAR:
488 return TRUE;
489 case MONO_TYPE_SZARRAY:
490 return mono_class_is_open_constructed_type (&t->data.klass->byval_arg);
491 case MONO_TYPE_ARRAY:
492 return mono_class_is_open_constructed_type (&t->data.array->eklass->byval_arg);
493 case MONO_TYPE_PTR:
494 return mono_class_is_open_constructed_type (t->data.type);
495 case MONO_TYPE_GENERICINST:
496 return t->data.generic_class->context.class_inst->is_open;
497 default:
498 return FALSE;
499 }
500 }
501
502 static MonoType*
503 inflate_generic_type (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
504 {
505 mono_error_init (error);
506
507 switch (type->type) {
508 case MONO_TYPE_MVAR: {
509 MonoType *nt;
510 int num = mono_type_get_generic_param_num (type);
511 MonoGenericInst *inst = context->method_inst;
512 if (!inst || !inst->type_argv)
513 return NULL;
514 if (num >= inst->type_argc) {
515 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
516 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded in this context with %d instantiations",
517 num, info ? info->name : "", inst->type_argc);
518 return NULL;
519 }
520
521 /*
522 * Note that the VAR/MVAR cases are different from the rest. The other cases duplicate @type,
523 * while the VAR/MVAR duplicates a type from the context. So, we need to ensure that the
524 * ->byref and ->attrs from @type are propagated to the returned type.
525 */
526 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
527 nt->byref = type->byref;
528 nt->attrs = type->attrs;
529 return nt;
530 }
531 case MONO_TYPE_VAR: {
532 MonoType *nt;
533 int num = mono_type_get_generic_param_num (type);
534 MonoGenericInst *inst = context->class_inst;
535 if (!inst)
536 return NULL;
537 if (num >= inst->type_argc) {
538 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
539 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded in this context with %d instantiations",
540 num, info ? info->name : "", inst->type_argc);
541 return NULL;
542 }
543 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
544 nt->byref = type->byref;
545 nt->attrs = type->attrs;
546 return nt;
547 }
548 case MONO_TYPE_SZARRAY: {
549 MonoClass *eclass = type->data.klass;
550 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
551 if (!inflated || !mono_error_ok (error))
552 return NULL;
553 nt = mono_metadata_type_dup (image, type);
554 nt->data.klass = mono_class_from_mono_type (inflated);
555 mono_metadata_free_type (inflated);
556 return nt;
557 }
558 case MONO_TYPE_ARRAY: {
559 MonoClass *eclass = type->data.array->eklass;
560 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
561 if (!inflated || !mono_error_ok (error))
562 return NULL;
563 nt = mono_metadata_type_dup (image, type);
564 nt->data.array->eklass = mono_class_from_mono_type (inflated);
565 mono_metadata_free_type (inflated);
566 return nt;
567 }
568 case MONO_TYPE_GENERICINST: {
569 MonoGenericClass *gclass = type->data.generic_class;
570 MonoGenericInst *inst;
571 MonoType *nt;
572 if (!gclass->context.class_inst->is_open)
573 return NULL;
574
575 inst = mono_metadata_inflate_generic_inst (gclass->context.class_inst, context, error);
576 if (!mono_error_ok (error))
577 return NULL;
578 if (inst != gclass->context.class_inst)
579 gclass = mono_metadata_lookup_generic_class (gclass->container_class, inst, gclass->is_dynamic);
580
581 if (gclass == type->data.generic_class)
582 return NULL;
583
584 nt = mono_metadata_type_dup (image, type);
585 nt->data.generic_class = gclass;
586 return nt;
587 }
588 case MONO_TYPE_CLASS:
589 case MONO_TYPE_VALUETYPE: {
590 MonoClass *klass = type->data.klass;
591 MonoGenericContainer *container = klass->generic_container;
592 MonoGenericInst *inst;
593 MonoGenericClass *gclass = NULL;
594 MonoType *nt;
595
596 if (!container)
597 return NULL;
598
599 /* We can't use context->class_inst directly, since it can have more elements */
600 inst = mono_metadata_inflate_generic_inst (container->context.class_inst, context, error);
601 if (!mono_error_ok (error))
602 return NULL;
603 if (inst == container->context.class_inst)
604 return NULL;
605
606 gclass = mono_metadata_lookup_generic_class (klass, inst, klass->image->dynamic);
607
608 nt = mono_metadata_type_dup (image, type);
609 nt->type = MONO_TYPE_GENERICINST;
610 nt->data.generic_class = gclass;
611 return nt;
612 }
613 default:
614 return NULL;
615 }
616 return NULL;
617 }
618
619 MonoGenericContext *
620 mono_generic_class_get_context (MonoGenericClass *gclass)
621 {
622 return &gclass->context;
623 }
624
625 MonoGenericContext *
626 mono_class_get_context (MonoClass *class)
627 {
628 return class->generic_class ? mono_generic_class_get_context (class->generic_class) : NULL;
629 }
630
631 /*
632 * mono_class_get_generic_container:
633 *
634 * Return the generic container of KLASS which should be a generic type definition.
635 */
636 MonoGenericContainer*
637 mono_class_get_generic_container (MonoClass *klass)
638 {
639 g_assert (klass->is_generic);
640
641 return klass->generic_container;
642 }
643
644 /*
645 * mono_class_get_generic_class:
646 *
647 * Return the MonoGenericClass of KLASS, which should be a generic instance.
648 */
649 MonoGenericClass*
650 mono_class_get_generic_class (MonoClass *klass)
651 {
652 g_assert (klass->is_inflated);
653
654 return klass->generic_class;
655 }
656
657 /*
658 * mono_class_inflate_generic_type_with_mempool:
659 * @mempool: a mempool
660 * @type: a type
661 * @context: a generics context
662 * @error: error context
663 *
664 * The same as mono_class_inflate_generic_type, but allocates the MonoType
665 * from mempool if it is non-NULL. If it is NULL, the MonoType is
666 * allocated on the heap and is owned by the caller.
667 * The returned type can potentially be the same as TYPE, so it should not be
668 * modified by the caller, and it should be freed using mono_metadata_free_type ().
669 */
670 MonoType*
671 mono_class_inflate_generic_type_with_mempool (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
672 {
673 MonoType *inflated = NULL;
674 mono_error_init (error);
675
676 if (context)
677 inflated = inflate_generic_type (image, type, context, error);
678 if (!mono_error_ok (error))
679 return NULL;
680
681 if (!inflated) {
682 MonoType *shared = mono_metadata_get_shared_type (type);
683
684 if (shared) {
685 return shared;
686 } else {
687 return mono_metadata_type_dup (image, type);
688 }
689 }
690
691 mono_stats.inflated_type_count++;
692 return inflated;
693 }
694
695 /*
696 * mono_class_inflate_generic_type:
697 * @type: a type
698 * @context: a generics context
699 *
700 * If @type is a generic type and @context is not NULL, instantiate it using the
701 * generics context @context.
702 *
703 * Returns: the instantiated type or a copy of @type. The returned MonoType is allocated
704 * on the heap and is owned by the caller. Returns NULL on error.
705 *
706 * @deprecated Please use mono_class_inflate_generic_type_checked instead
707 */
708 MonoType*
709 mono_class_inflate_generic_type (MonoType *type, MonoGenericContext *context)
710 {
711 MonoError error;
712 MonoType *result;
713 result = mono_class_inflate_generic_type_checked (type, context, &error);
714
715 if (!mono_error_ok (&error)) {
716 mono_error_cleanup (&error);
717 return NULL;
718 }
719 return result;
720 }
721
722 /*
723 * mono_class_inflate_generic_type:
724 * @type: a type
725 * @context: a generics context
726 * @error: error context to use
727 *
728 * If @type is a generic type and @context is not NULL, instantiate it using the
729 * generics context @context.
730 *
731 * Returns: the instantiated type or a copy of @type. The returned MonoType is allocated
732 * on the heap and is owned by the caller.
733 */
734 MonoType*
735 mono_class_inflate_generic_type_checked (MonoType *type, MonoGenericContext *context, MonoError *error)
736 {
737 return mono_class_inflate_generic_type_with_mempool (NULL, type, context, error);
738 }
739
740 /*
741 * mono_class_inflate_generic_type_no_copy:
742 *
743 * Same as inflate_generic_type_with_mempool, but return TYPE if no inflation
744 * was done.
745 */
746 static MonoType*
747 mono_class_inflate_generic_type_no_copy (MonoImage *image, MonoType *type, MonoGenericContext *context)
748 {
749 MonoError error;
750 MonoType *inflated = NULL;
751
752 if (context) {
753 inflated = inflate_generic_type (image, type, context, &error);
754 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
755 }
756
757 if (!inflated)
758 return type;
759
760 mono_stats.inflated_type_count++;
761 return inflated;
762 }
763
764 static MonoClass*
765 mono_class_inflate_generic_class_checked (MonoClass *gklass, MonoGenericContext *context, MonoError *error)
766 {
767 MonoClass *res;
768 MonoType *inflated;
769
770 inflated = mono_class_inflate_generic_type_checked (&gklass->byval_arg, context, error);
771 if (!mono_error_ok (error))
772 return NULL;
773
774 res = mono_class_from_mono_type (inflated);
775 mono_metadata_free_type (inflated);
776
777 return res;
778 }
779 /*
780 * mono_class_inflate_generic_class:
781 *
782 * Inflate the class GKLASS with CONTEXT.
783 */
784 MonoClass*
785 mono_class_inflate_generic_class (MonoClass *gklass, MonoGenericContext *context)
786 {
787 MonoError error;
788 MonoClass *res;
789
790 res = mono_class_inflate_generic_class_checked (gklass, context, &error);
791 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
792
793 return res;
794 }
795
796
797
798 static MonoGenericContext
799 inflate_generic_context (MonoGenericContext *context, MonoGenericContext *inflate_with, MonoError *error)
800 {
801 MonoGenericInst *class_inst = NULL;
802 MonoGenericInst *method_inst = NULL;
803 MonoGenericContext res = { NULL, NULL };
804
805 mono_error_init (error);
806
807 if (context->class_inst) {
808 class_inst = mono_metadata_inflate_generic_inst (context->class_inst, inflate_with, error);
809 if (!mono_error_ok (error))
810 goto fail;
811 }
812
813 if (context->method_inst) {
814 method_inst = mono_metadata_inflate_generic_inst (context->method_inst, inflate_with, error);
815 if (!mono_error_ok (error))
816 goto fail;
817 }
818
819 res.class_inst = class_inst;
820 res.method_inst = method_inst;
821 fail:
822 return res;
823 }
824
825 /*
826 * mono_class_inflate_generic_method:
827 * @method: a generic method
828 * @context: a generics context
829 *
830 * Instantiate the generic method @method using the generics context @context.
831 *
832 * Returns: the new instantiated method
833 */
834 MonoMethod *
835 mono_class_inflate_generic_method (MonoMethod *method, MonoGenericContext *context)
836 {
837 return mono_class_inflate_generic_method_full (method, NULL, context);
838 }
839
840 /**
841 * mono_class_inflate_generic_method_full:
842 *
843 * Instantiate method @method with the generic context @context.
844 * BEWARE: All non-trivial fields are invalid, including klass, signature, and header.
845 * Use mono_method_signature () and mono_method_get_header () to get the correct values.
846 */
847 MonoMethod*
848 mono_class_inflate_generic_method_full (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context)
849 {
850 MonoError error;
851 MonoMethod *res = mono_class_inflate_generic_method_full_checked (method, klass_hint, context, &error);
852 if (!mono_error_ok (&error))
853 /*FIXME do proper error handling - on this case, kill this function. */
854 g_error ("Could not inflate generic method due to %s", mono_error_get_message (&error));
855
856 return res;
857 }
858
859 /**
860 * mono_class_inflate_generic_method_full_checked:
861 * Same as mono_class_inflate_generic_method_full but return failure using @error.
862 */
863 MonoMethod*
864 mono_class_inflate_generic_method_full_checked (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context, MonoError *error)
865 {
866 MonoMethod *result;
867 MonoMethodInflated *iresult, *cached;
868 MonoMethodSignature *sig;
869 MonoGenericContext tmp_context;
870 gboolean is_mb_open = FALSE;
871
872 mono_error_init (error);
873
874 /* The `method' has already been instantiated before => we need to peel out the instantiation and create a new context */
875 while (method->is_inflated) {
876 MonoGenericContext *method_context = mono_method_get_context (method);
877 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
878
879 tmp_context = inflate_generic_context (method_context, context, error);
880 if (!mono_error_ok (error))
881 return NULL;
882 context = &tmp_context;
883
884 if (mono_metadata_generic_context_equal (method_context, context))
885 return method;
886
887 method = imethod->declaring;
888 }
889
890 if (!method->is_generic && !method->klass->generic_container)
891 return method;
892
893 /*
894 * The reason for this hack is to fix the behavior of inflating generic methods that come from a MethodBuilder.
895 * What happens is that instantiating a generic MethodBuilder with its own arguments should create a diferent object.
896 * This is opposite to the way non-SRE MethodInfos behave.
897 *
898 * This happens, for example, when we want to emit a recursive generic method. Given the following C# code:
899 *
900 * void Example<T> () {
901 * Example<T> ();
902 * }
903 *
904 * In Example, the method token must be encoded as: "void Example<!!0>()"
905 *
906 * The reference to the first generic argument, "!!0", must be explicit otherwise it won't be inflated
907 * properly. To get that we need to inflate the MethodBuilder with its own arguments.
908 *
909 * On the other hand, inflating a non-SRE generic method with its own arguments should
910 * return itself. For example:
911 *
912 * MethodInfo m = ... //m is a generic method definition
913 * MethodInfo res = m.MakeGenericMethod (m.GetGenericArguments ());
914 * res == m
915 *
916 * To allow such scenarios we must allow inflation of MethodBuilder to happen in a diferent way than
917 * what happens with regular methods.
918 *
919 * There is one last touch to this madness, once a TypeBuilder is finished, IOW CreateType() is called,
920 * everything should behave like a regular type or method.
921 *
922 */
923 is_mb_open = method->is_generic &&
924 method->klass->image->dynamic && !method->klass->wastypebuilder && /* that is a MethodBuilder from an unfinished TypeBuilder */
925 context->method_inst == mono_method_get_generic_container (method)->context.method_inst; /* and it's been instantiated with its own arguments. */
926
927 iresult = g_new0 (MonoMethodInflated, 1);
928 iresult->context = *context;
929 iresult->declaring = method;
930 iresult->method.method.is_mb_open = is_mb_open;
931
932 if (!context->method_inst && method->is_generic)
933 iresult->context.method_inst = mono_method_get_generic_container (method)->context.method_inst;
934
935 if (!context->class_inst) {
936 g_assert (!iresult->declaring->klass->generic_class);
937 if (iresult->declaring->klass->generic_container)
938 iresult->context.class_inst = iresult->declaring->klass->generic_container->context.class_inst;
939 else if (iresult->declaring->klass->generic_class)
940 iresult->context.class_inst = iresult->declaring->klass->generic_class->context.class_inst;
941 }
942
943 mono_loader_lock ();
944 cached = mono_method_inflated_lookup (iresult, FALSE);
945 if (cached) {
946 mono_loader_unlock ();
947 g_free (iresult);
948 return (MonoMethod*)cached;
949 }
950
951 mono_stats.inflated_method_count++;
952
953 inflated_methods_size += sizeof (MonoMethodInflated);
954
955 sig = mono_method_signature (method);
956 if (!sig) {
957 char *name = mono_type_get_full_name (method->klass);
958 mono_error_set_bad_image (error, method->klass->image, "Could not resolve signature of method %s:%s", name, method->name);
959 g_free (name);
960 goto fail;
961 }
962
963 if (sig->pinvoke) {
964 memcpy (&iresult->method.pinvoke, method, sizeof (MonoMethodPInvoke));
965 } else {
966 memcpy (&iresult->method.method, method, sizeof (MonoMethod));
967 }
968
969 result = (MonoMethod *) iresult;
970 result->is_inflated = TRUE;
971 result->is_generic = FALSE;
972 result->sre_method = FALSE;
973 result->signature = NULL;
974 result->is_mb_open = is_mb_open;
975
976 if (!context->method_inst) {
977 /* Set the generic_container of the result to the generic_container of method */
978 MonoGenericContainer *generic_container = mono_method_get_generic_container (method);
979
980 if (generic_container) {
981 result->is_generic = 1;
982 mono_method_set_generic_container (result, generic_container);
983 }
984 }
985
986 if (!klass_hint || !klass_hint->generic_class ||
987 klass_hint->generic_class->container_class != method->klass ||
988 klass_hint->generic_class->context.class_inst != context->class_inst)
989 klass_hint = NULL;
990
991 if (method->klass->generic_container)
992 result->klass = klass_hint;
993
994 if (!result->klass) {
995 MonoType *inflated = inflate_generic_type (NULL, &method->klass->byval_arg, context, error);
996 if (!mono_error_ok (error))
997 goto fail;
998
999 result->klass = inflated ? mono_class_from_mono_type (inflated) : method->klass;
1000 if (inflated)
1001 mono_metadata_free_type (inflated);
1002 }
1003
1004 mono_method_inflated_lookup (iresult, TRUE);
1005 mono_loader_unlock ();
1006 return result;
1007
1008 fail:
1009 mono_loader_unlock ();
1010 g_free (iresult);
1011 return NULL;
1012 }
1013
1014 /**
1015 * mono_get_inflated_method:
1016 *
1017 * Obsolete. We keep it around since it's mentioned in the public API.
1018 */
1019 MonoMethod*
1020 mono_get_inflated_method (MonoMethod *method)
1021 {
1022 return method;
1023 }
1024
1025 /*
1026 * mono_method_get_context_general:
1027 * @method: a method
1028 * @uninflated: handle uninflated methods?
1029 *
1030 * Returns the generic context of a method or NULL if it doesn't have
1031 * one. For an inflated method that's the context stored in the
1032 * method. Otherwise it's in the method's generic container or in the
1033 * generic container of the method's class.
1034 */
1035 MonoGenericContext*
1036 mono_method_get_context_general (MonoMethod *method, gboolean uninflated)
1037 {
1038 if (method->is_inflated) {
1039 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1040 return &imethod->context;
1041 }
1042 if (!uninflated)
1043 return NULL;
1044 if (method->is_generic)
1045 return &(mono_method_get_generic_container (method)->context);
1046 if (method->klass->generic_container)
1047 return &method->klass->generic_container->context;
1048 return NULL;
1049 }
1050
1051 /*
1052 * mono_method_get_context:
1053 * @method: a method
1054 *
1055 * Returns the generic context for method if it's inflated, otherwise
1056 * NULL.
1057 */
1058 MonoGenericContext*
1059 mono_method_get_context (MonoMethod *method)
1060 {
1061 return mono_method_get_context_general (method, FALSE);
1062 }
1063
1064 /*
1065 * mono_method_get_generic_container:
1066 *
1067 * Returns the generic container of METHOD, which should be a generic method definition.
1068 * Returns NULL if METHOD is not a generic method definition.
1069 * LOCKING: Acquires the loader lock.
1070 */
1071 MonoGenericContainer*
1072 mono_method_get_generic_container (MonoMethod *method)
1073 {
1074 MonoGenericContainer *container;
1075
1076 if (!method->is_generic)
1077 return NULL;
1078
1079 container = mono_image_property_lookup (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER);
1080 g_assert (container);
1081
1082 return container;
1083 }
1084
1085 /*
1086 * mono_method_set_generic_container:
1087 *
1088 * Sets the generic container of METHOD to CONTAINER.
1089 * LOCKING: Acquires the loader lock.
1090 */
1091 void
1092 mono_method_set_generic_container (MonoMethod *method, MonoGenericContainer* container)
1093 {
1094 g_assert (method->is_generic);
1095
1096 mono_image_property_insert (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER, container);
1097 }
1098
1099 /**
1100 * mono_class_find_enum_basetype:
1101 * @class: The enum class
1102 *
1103 * Determine the basetype of an enum by iterating through its fields. We do this
1104 * in a separate function since it is cheaper than calling mono_class_setup_fields.
1105 */
1106 static MonoType*
1107 mono_class_find_enum_basetype (MonoClass *class)
1108 {
1109 MonoGenericContainer *container = NULL;
1110 MonoImage *m = class->image;
1111 const int top = class->field.count;
1112 int i;
1113
1114 g_assert (class->enumtype);
1115
1116 if (class->generic_container)
1117 container = class->generic_container;
1118 else if (class->generic_class) {
1119 MonoClass *gklass = class->generic_class->container_class;
1120
1121 container = gklass->generic_container;
1122 g_assert (container);
1123 }
1124
1125 /*
1126 * Fetch all the field information.
1127 */
1128 for (i = 0; i < top; i++){
1129 const char *sig;
1130 guint32 cols [MONO_FIELD_SIZE];
1131 int idx = class->field.first + i;
1132 MonoType *ftype;
1133
1134 /* class->field.first and idx points into the fieldptr table */
1135 mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
1136
1137 if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_STATIC) //no need to decode static fields
1138 continue;
1139
1140 if (!mono_verifier_verify_field_signature (class->image, cols [MONO_FIELD_SIGNATURE], NULL))
1141 return NULL;
1142
1143 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
1144 mono_metadata_decode_value (sig, &sig);
1145 /* FIELD signature == 0x06 */
1146 if (*sig != 0x06)
1147 return NULL;
1148
1149 ftype = mono_metadata_parse_type_full (m, container, MONO_PARSE_FIELD, cols [MONO_FIELD_FLAGS], sig + 1, &sig);
1150 if (!ftype)
1151 return NULL;
1152 if (class->generic_class) {
1153 //FIXME do we leak here?
1154 ftype = mono_class_inflate_generic_type (ftype, mono_class_get_context (class));
1155 ftype->attrs = cols [MONO_FIELD_FLAGS];
1156 }
1157
1158 return ftype;
1159 }
1160
1161 return NULL;
1162 }
1163
1164 /*
1165 * Checks for MonoClass::exception_type without resolving all MonoType's into MonoClass'es
1166 */
1167 static gboolean
1168 mono_type_has_exceptions (MonoType *type)
1169 {
1170 switch (type->type) {
1171 case MONO_TYPE_CLASS:
1172 case MONO_TYPE_VALUETYPE:
1173 case MONO_TYPE_SZARRAY:
1174 return type->data.klass->exception_type;
1175 case MONO_TYPE_ARRAY:
1176 return type->data.array->eklass->exception_type;
1177 case MONO_TYPE_GENERICINST:
1178 return mono_generic_class_get_class (type->data.generic_class)->exception_type;
1179 }
1180 return FALSE;
1181 }
1182
1183 /**
1184 * mono_class_setup_fields:
1185 * @class: The class to initialize
1186 *
1187 * Initializes the class->fields.
1188 * LOCKING: Assumes the loader lock is held.
1189 */
1190 static void
1191 mono_class_setup_fields (MonoClass *class)
1192 {
1193 MonoImage *m = class->image;
1194 int top = class->field.count;
1195 guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1196 int i, blittable = TRUE;
1197 guint32 real_size = 0;
1198 guint32 packing_size = 0;
1199 gboolean explicit_size;
1200 MonoClassField *field;
1201 MonoGenericContainer *container = NULL;
1202 MonoClass *gtd = class->generic_class ? mono_class_get_generic_type_definition (class) : NULL;
1203
1204 if (class->size_inited)
1205 return;
1206
1207 if (class->generic_class && class->generic_class->container_class->image->dynamic && !class->generic_class->container_class->wastypebuilder) {
1208 /*
1209 * This happens when a generic instance of an unfinished generic typebuilder
1210 * is used as an element type for creating an array type. We can't initialize
1211 * the fields of this class using the fields of gklass, since gklass is not
1212 * finished yet, fields could be added to it later.
1213 */
1214 return;
1215 }
1216
1217 if (gtd) {
1218 mono_class_setup_fields (gtd);
1219 if (gtd->exception_type) {
1220 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1221 return;
1222 }
1223
1224 top = gtd->field.count;
1225 class->field.first = gtd->field.first;
1226 class->field.count = gtd->field.count;
1227 }
1228
1229 class->instance_size = 0;
1230 if (!class->rank)
1231 class->sizes.class_size = 0;
1232
1233 if (class->parent) {
1234 /* For generic instances, class->parent might not have been initialized */
1235 mono_class_init (class->parent);
1236 if (!class->parent->size_inited) {
1237 mono_class_setup_fields (class->parent);
1238 if (class->parent->exception_type) {
1239 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1240 return;
1241 }
1242 }
1243 class->instance_size += class->parent->instance_size;
1244 class->min_align = class->parent->min_align;
1245 /* we use |= since it may have been set already */
1246 class->has_references |= class->parent->has_references;
1247 blittable = class->parent->blittable;
1248 } else {
1249 class->instance_size = sizeof (MonoObject);
1250 class->min_align = 1;
1251 }
1252
1253 /* We can't really enable 16 bytes alignment until the GC supports it.
1254 The whole layout/instance size code must be reviewed because we do alignment calculation in terms of the
1255 boxed instance, which leads to unexplainable holes at the beginning of an object embedding a simd type.
1256 Bug #506144 is an example of this issue.
1257
1258 if (class->simd_type)
1259 class->min_align = 16;
1260 */
1261 /* Get the real size */
1262 explicit_size = mono_metadata_packing_from_typedef (class->image, class->type_token, &packing_size, &real_size);
1263
1264 if (explicit_size) {
1265 g_assert ((packing_size & 0xfffffff0) == 0);
1266 class->packing_size = packing_size;
1267 real_size += class->instance_size;
1268 }
1269
1270 if (!top) {
1271 if (explicit_size && real_size) {
1272 class->instance_size = MAX (real_size, class->instance_size);
1273 }
1274 class->size_inited = 1;
1275 class->blittable = blittable;
1276 return;
1277 }
1278
1279 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT)
1280 blittable = FALSE;
1281
1282 /* Prevent infinite loops if the class references itself */
1283 class->size_inited = 1;
1284
1285 class->fields = mono_image_alloc0 (class->image, sizeof (MonoClassField) * top);
1286
1287 if (class->generic_container) {
1288 container = class->generic_container;
1289 } else if (gtd) {
1290 container = gtd->generic_container;
1291 g_assert (container);
1292 }
1293
1294 /*
1295 * Fetch all the field information.
1296 */
1297 for (i = 0; i < top; i++){
1298 int idx = class->field.first + i;
1299 field = &class->fields [i];
1300
1301 field->parent = class;
1302
1303 if (gtd) {
1304 MonoClassField *gfield = &gtd->fields [i];
1305
1306 field->name = mono_field_get_name (gfield);
1307 /*This memory must come from the image mempool as we don't have a chance to free it.*/
1308 field->type = mono_class_inflate_generic_type_no_copy (class->image, gfield->type, mono_class_get_context (class));
1309 g_assert (field->type->attrs == gfield->type->attrs);
1310 if (mono_field_is_deleted (field))
1311 continue;
1312 field->offset = gfield->offset;
1313 } else {
1314 const char *sig;
1315 guint32 cols [MONO_FIELD_SIZE];
1316
1317 /* class->field.first and idx points into the fieldptr table */
1318 mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
1319 /* The name is needed for fieldrefs */
1320 field->name = mono_metadata_string_heap (m, cols [MONO_FIELD_NAME]);
1321 if (!mono_verifier_verify_field_signature (class->image, cols [MONO_FIELD_SIGNATURE], NULL)) {
1322 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1323 break;
1324 }
1325 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
1326 mono_metadata_decode_value (sig, &sig);
1327 /* FIELD signature == 0x06 */
1328 g_assert (*sig == 0x06);
1329 field->type = mono_metadata_parse_type_full (m, container, MONO_PARSE_FIELD, cols [MONO_FIELD_FLAGS], sig + 1, &sig);
1330 if (!field->type) {
1331 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1332 break;
1333 }
1334 if (mono_field_is_deleted (field))
1335 continue;
1336 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1337 guint32 offset;
1338 mono_metadata_field_info (m, idx, &offset, NULL, NULL);
1339 field->offset = offset;
1340
1341 if (field->offset == (guint32)-1 && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1342 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Missing field layout info for %s", field->name));
1343 break;
1344 }
1345 if (field->offset < -1) { /*-1 is used to encode special static fields */
1346 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Invalid negative field offset %d for %s", field->offset, field->name));
1347 break;
1348 }
1349 }
1350 }
1351
1352 /* Only do these checks if we still think this type is blittable */
1353 if (blittable && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1354 if (field->type->byref || MONO_TYPE_IS_REFERENCE (field->type)) {
1355 blittable = FALSE;
1356 } else {
1357 MonoClass *field_class = mono_class_from_mono_type (field->type);
1358 if (field_class) {
1359 mono_class_setup_fields (field_class);
1360 if (field_class->exception_type) {
1361 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1362 break;
1363 }
1364 }
1365 if (!field_class || !field_class->blittable)
1366 blittable = FALSE;
1367 }
1368 }
1369
1370 if (class->enumtype && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1371 class->cast_class = class->element_class = mono_class_from_mono_type (field->type);
1372 blittable = class->element_class->blittable;
1373 }
1374
1375 if (mono_type_has_exceptions (field->type)) {
1376 char *class_name = mono_type_get_full_name (class);
1377 char *type_name = mono_type_full_name (field->type);
1378
1379 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1380 g_warning ("Invalid type %s for instance field %s:%s", type_name, class_name, field->name);
1381 g_free (class_name);
1382 g_free (type_name);
1383 break;
1384 }
1385 /* The def_value of fields is compute lazily during vtable creation */
1386 }
1387
1388 if (class == mono_defaults.string_class)
1389 blittable = FALSE;
1390
1391 class->blittable = blittable;
1392
1393 if (class->enumtype && !mono_class_enum_basetype (class)) {
1394 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1395 return;
1396 }
1397 if (explicit_size && real_size) {
1398 class->instance_size = MAX (real_size, class->instance_size);
1399 }
1400
1401 if (class->exception_type)
1402 return;
1403 mono_class_layout_fields (class);
1404
1405 /*valuetypes can't be neither bigger than 1Mb or empty. */
1406 if (class->valuetype && (class->instance_size <= 0 || class->instance_size > (0x100000 + sizeof (MonoObject))))
1407 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1408 }
1409
1410 /**
1411 * mono_class_setup_fields_locking:
1412 * @class: The class to initialize
1413 *
1414 * Initializes the class->fields array of fields.
1415 * Aquires the loader lock.
1416 */
1417 static void
1418 mono_class_setup_fields_locking (MonoClass *class)
1419 {
1420 mono_loader_lock ();
1421 mono_class_setup_fields (class);
1422 mono_loader_unlock ();
1423 }
1424
1425 /*
1426 * mono_class_has_references:
1427 *
1428 * Returns whenever @klass->has_references is set, initializing it if needed.
1429 * Aquires the loader lock.
1430 */
1431 static gboolean
1432 mono_class_has_references (MonoClass *klass)
1433 {
1434 if (klass->init_pending) {
1435 /* Be conservative */
1436 return TRUE;
1437 } else {
1438 mono_class_init (klass);
1439
1440 return klass->has_references;
1441 }
1442 }
1443
1444 /* useful until we keep track of gc-references in corlib etc. */
1445 #ifdef HAVE_SGEN_GC
1446 #define IS_GC_REFERENCE(t) FALSE
1447 #else
1448 #define IS_GC_REFERENCE(t) ((t)->type == MONO_TYPE_U && class->image == mono_defaults.corlib)
1449 #endif
1450
1451 /*
1452 * mono_type_get_basic_type_from_generic:
1453 * @type: a type
1454 *
1455 * Returns a closed type corresponding to the possibly open type
1456 * passed to it.
1457 */
1458 MonoType*
1459 mono_type_get_basic_type_from_generic (MonoType *type)
1460 {
1461 /* When we do generic sharing we let type variables stand for reference types. */
1462 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR))
1463 return &mono_defaults.object_class->byval_arg;
1464 return type;
1465 }
1466
1467 /*
1468 * mono_class_layout_fields:
1469 * @class: a class
1470 *
1471 * Compute the placement of fields inside an object or struct, according to
1472 * the layout rules and set the following fields in @class:
1473 * - has_references (if the class contains instance references firled or structs that contain references)
1474 * - has_static_refs (same, but for static fields)
1475 * - instance_size (size of the object in memory)
1476 * - class_size (size needed for the static fields)
1477 * - size_inited (flag set when the instance_size is set)
1478 *
1479 * LOCKING: this is supposed to be called with the loader lock held.
1480 */
1481 void
1482 mono_class_layout_fields (MonoClass *class)
1483 {
1484 int i;
1485 const int top = class->field.count;
1486 guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1487 guint32 pass, passes, real_size;
1488 gboolean gc_aware_layout = FALSE;
1489 MonoClassField *field;
1490
1491 /*
1492 * When we do generic sharing we need to have layout
1493 * information for open generic classes (either with a generic
1494 * context containing type variables or with a generic
1495 * container), so we don't return in that case anymore.
1496 */
1497
1498 /*
1499 * Enable GC aware auto layout: in this mode, reference
1500 * fields are grouped together inside objects, increasing collector
1501 * performance.
1502 * Requires that all classes whose layout is known to native code be annotated
1503 * with [StructLayout (LayoutKind.Sequential)]
1504 * Value types have gc_aware_layout disabled by default, as per
1505 * what the default is for other runtimes.
1506 */
1507 /* corlib is missing [StructLayout] directives in many places */
1508 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1509 if (class->image != mono_defaults.corlib &&
1510 class->byval_arg.type != MONO_TYPE_VALUETYPE)
1511 gc_aware_layout = TRUE;
1512 /* from System.dll, used in metadata/process.h */
1513 if (strcmp (class->name, "ProcessStartInfo") == 0)
1514 gc_aware_layout = FALSE;
1515 }
1516
1517 /* Compute klass->has_references */
1518 /*
1519 * Process non-static fields first, since static fields might recursively
1520 * refer to the class itself.
1521 */
1522 for (i = 0; i < top; i++) {
1523 MonoType *ftype;
1524
1525 field = &class->fields [i];
1526
1527 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1528 ftype = mono_type_get_underlying_type (field->type);
1529 ftype = mono_type_get_basic_type_from_generic (ftype);
1530 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1531 class->has_references = TRUE;
1532 }
1533 }
1534
1535 for (i = 0; i < top; i++) {
1536 MonoType *ftype;
1537
1538 field = &class->fields [i];
1539
1540 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
1541 ftype = mono_type_get_underlying_type (field->type);
1542 ftype = mono_type_get_basic_type_from_generic (ftype);
1543 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1544 class->has_static_refs = TRUE;
1545 }
1546 }
1547
1548 for (i = 0; i < top; i++) {
1549 MonoType *ftype;
1550
1551 field = &class->fields [i];
1552
1553 ftype = mono_type_get_underlying_type (field->type);
1554 ftype = mono_type_get_basic_type_from_generic (ftype);
1555 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
1556 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1557 class->has_static_refs = TRUE;
1558 else
1559 class->has_references = TRUE;
1560 }
1561 }
1562
1563 /*
1564 * Compute field layout and total size (not considering static fields)
1565 */
1566
1567 switch (layout) {
1568 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
1569 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
1570
1571 if (gc_aware_layout)
1572 passes = 2;
1573 else
1574 passes = 1;
1575
1576 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
1577 passes = 1;
1578
1579 if (class->parent)
1580 real_size = class->parent->instance_size;
1581 else
1582 real_size = sizeof (MonoObject);
1583
1584 for (pass = 0; pass < passes; ++pass) {
1585 for (i = 0; i < top; i++){
1586 gint32 align;
1587 guint32 size;
1588 MonoType *ftype;
1589
1590 field = &class->fields [i];
1591
1592 if (mono_field_is_deleted (field))
1593 continue;
1594 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1595 continue;
1596
1597 ftype = mono_type_get_underlying_type (field->type);
1598 ftype = mono_type_get_basic_type_from_generic (ftype);
1599 if (gc_aware_layout) {
1600 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
1601 if (pass == 1)
1602 continue;
1603 } else {
1604 if (pass == 0)
1605 continue;
1606 }
1607 }
1608
1609 if ((top == 1) && (class->instance_size == sizeof (MonoObject)) &&
1610 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
1611 /* This field is a hack inserted by MCS to empty structures */
1612 continue;
1613 }
1614
1615 size = mono_type_size (field->type, &align);
1616
1617 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
1618 align = class->packing_size ? MIN (class->packing_size, align): align;
1619 /* if the field has managed references, we need to force-align it
1620 * see bug #77788
1621 */
1622 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1623 align = MAX (align, sizeof (gpointer));
1624
1625 class->min_align = MAX (align, class->min_align);
1626 field->offset = real_size;
1627 field->offset += align - 1;
1628 field->offset &= ~(align - 1);
1629 real_size = field->offset + size;
1630 }
1631
1632 class->instance_size = MAX (real_size, class->instance_size);
1633
1634 if (class->instance_size & (class->min_align - 1)) {
1635 class->instance_size += class->min_align - 1;
1636 class->instance_size &= ~(class->min_align - 1);
1637 }
1638 }
1639 break;
1640 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
1641 real_size = 0;
1642 for (i = 0; i < top; i++) {
1643 gint32 align;
1644 guint32 size;
1645 MonoType *ftype;
1646
1647 field = &class->fields [i];
1648
1649 /*
1650 * There must be info about all the fields in a type if it
1651 * uses explicit layout.
1652 */
1653
1654 if (mono_field_is_deleted (field))
1655 continue;
1656 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1657 continue;
1658
1659 size = mono_type_size (field->type, &align);
1660 class->min_align = MAX (align, class->min_align);
1661
1662 /*
1663 * When we get here, field->offset is already set by the
1664 * loader (for either runtime fields or fields loaded from metadata).
1665 * The offset is from the start of the object: this works for both
1666 * classes and valuetypes.
1667 */
1668 field->offset += sizeof (MonoObject);
1669 ftype = mono_type_get_underlying_type (field->type);
1670 ftype = mono_type_get_basic_type_from_generic (ftype);
1671 if (MONO_TYPE_IS_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
1672 if (field->offset % sizeof (gpointer)) {
1673 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1674 }
1675 }
1676
1677 /*
1678 * Calc max size.
1679 */
1680 real_size = MAX (real_size, size + field->offset);
1681 }
1682 class->instance_size = MAX (real_size, class->instance_size);
1683 break;
1684 }
1685
1686 if (layout != TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1687 /*
1688 * For small structs, set min_align to at least the struct size to improve
1689 * performance, and since the JIT memset/memcpy code assumes this and generates
1690 * unaligned accesses otherwise. See #78990 for a testcase.
1691 */
1692 if (class->instance_size <= sizeof (MonoObject) + sizeof (gpointer))
1693 class->min_align = MAX (class->min_align, class->instance_size - sizeof (MonoObject));
1694 }
1695
1696 class->size_inited = 1;
1697
1698 /*
1699 * Compute static field layout and size
1700 */
1701 for (i = 0; i < top; i++){
1702 gint32 align;
1703 guint32 size;
1704
1705 field = &class->fields [i];
1706
1707 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC) || field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
1708 continue;
1709 if (mono_field_is_deleted (field))
1710 continue;
1711
1712 if (mono_type_has_exceptions (field->type)) {
1713 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
1714 break;
1715 }
1716
1717 size = mono_type_size (field->type, &align);
1718 field->offset = class->sizes.class_size;
1719 field->offset += align - 1;
1720 field->offset &= ~(align - 1);
1721 class->sizes.class_size = field->offset + size;
1722 }
1723 }
1724
1725 static MonoMethod*
1726 create_array_method (MonoClass *class, const char *name, MonoMethodSignature *sig)
1727 {
1728 MonoMethod *method;
1729
1730 method = (MonoMethod *) mono_image_alloc0 (class->image, sizeof (MonoMethodPInvoke));
1731 method->klass = class;
1732 method->flags = METHOD_ATTRIBUTE_PUBLIC;
1733 method->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
1734 method->signature = sig;
1735 method->name = name;
1736 method->slot = -1;
1737 /* .ctor */
1738 if (name [0] == '.') {
1739 method->flags |= METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
1740 } else {
1741 method->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
1742 }
1743 return method;
1744 }
1745
1746 /*
1747 * mono_class_setup_methods:
1748 * @class: a class
1749 *
1750 * Initializes the 'methods' array in the klass.
1751 * Calling this method should be avoided if possible since it allocates a lot
1752 * of long-living MonoMethod structures.
1753 * Methods belonging to an interface are assigned a sequential slot starting
1754 * from 0.
1755 *
1756 * On failure this function sets class->exception_type
1757 */
1758 void
1759 mono_class_setup_methods (MonoClass *class)
1760 {
1761 int i;
1762 MonoMethod **methods;
1763
1764 if (class->methods)
1765 return;
1766
1767 mono_loader_lock ();
1768
1769 if (class->methods) {
1770 mono_loader_unlock ();
1771 return;
1772 }
1773
1774 if (class->generic_class) {
1775 MonoError error;
1776 MonoClass *gklass = class->generic_class->container_class;
1777
1778 mono_class_init (gklass);
1779 if (!gklass->exception_type)
1780 mono_class_setup_methods (gklass);
1781 if (gklass->exception_type) {
1782 /*FIXME make exception_data less opaque so it's possible to dup it here*/
1783 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
1784 mono_loader_unlock ();
1785 return;
1786 }
1787
1788 /* The + 1 makes this always non-NULL to pass the check in mono_class_setup_methods () */
1789 class->method.count = gklass->method.count;
1790 methods = g_new0 (MonoMethod *, class->method.count + 1);
1791
1792 for (i = 0; i < class->method.count; i++) {
1793 methods [i] = mono_class_inflate_generic_method_full_checked (
1794 gklass->methods [i], class, mono_class_get_context (class), &error);
1795 if (!mono_error_ok (&error)) {
1796 char *method = mono_method_full_name (gklass->methods [i], TRUE);
1797 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)));
1798
1799 g_free (method);
1800 mono_error_cleanup (&error);
1801 mono_loader_unlock ();
1802 return;
1803 }
1804 }
1805 } else if (class->rank) {
1806 MonoError error;
1807 MonoMethod *amethod;
1808 MonoMethodSignature *sig;
1809 int count_generic = 0, first_generic = 0;
1810 int method_num = 0;
1811
1812 class->method.count = 3 + (class->rank > 1? 2: 1);
1813
1814 mono_class_setup_interfaces (class, &error);
1815 g_assert (mono_error_ok (&error)); /*FIXME can this fail for array types?*/
1816
1817 if (class->interface_count) {
1818 count_generic = generic_array_methods (class);
1819 first_generic = class->method.count;
1820 class->method.count += class->interface_count * count_generic;
1821 }
1822
1823 methods = mono_image_alloc0 (class->image, sizeof (MonoMethod*) * class->method.count);
1824
1825 sig = mono_metadata_signature_alloc (class->image, class->rank);
1826 sig->ret = &mono_defaults.void_class->byval_arg;
1827 sig->pinvoke = TRUE;
1828 sig->hasthis = TRUE;
1829 for (i = 0; i < class->rank; ++i)
1830 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1831
1832 amethod = create_array_method (class, ".ctor", sig);
1833 methods [method_num++] = amethod;
1834 if (class->rank > 1) {
1835 sig = mono_metadata_signature_alloc (class->image, class->rank * 2);
1836 sig->ret = &mono_defaults.void_class->byval_arg;
1837 sig->pinvoke = TRUE;
1838 sig->hasthis = TRUE;
1839 for (i = 0; i < class->rank * 2; ++i)
1840 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1841
1842 amethod = create_array_method (class, ".ctor", sig);
1843 methods [method_num++] = amethod;
1844 }
1845 /* element Get (idx11, [idx2, ...]) */
1846 sig = mono_metadata_signature_alloc (class->image, class->rank);
1847 sig->ret = &class->element_class->byval_arg;
1848 sig->pinvoke = TRUE;
1849 sig->hasthis = TRUE;
1850 for (i = 0; i < class->rank; ++i)
1851 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1852 amethod = create_array_method (class, "Get", sig);
1853 methods [method_num++] = amethod;
1854 /* element& Address (idx11, [idx2, ...]) */
1855 sig = mono_metadata_signature_alloc (class->image, class->rank);
1856 sig->ret = &class->element_class->this_arg;
1857 sig->pinvoke = TRUE;
1858 sig->hasthis = TRUE;
1859 for (i = 0; i < class->rank; ++i)
1860 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1861 amethod = create_array_method (class, "Address", sig);
1862 methods [method_num++] = amethod;
1863 /* void Set (idx11, [idx2, ...], element) */
1864 sig = mono_metadata_signature_alloc (class->image, class->rank + 1);
1865 sig->ret = &mono_defaults.void_class->byval_arg;
1866 sig->pinvoke = TRUE;
1867 sig->hasthis = TRUE;
1868 for (i = 0; i < class->rank; ++i)
1869 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1870 sig->params [i] = &class->element_class->byval_arg;
1871 amethod = create_array_method (class, "Set", sig);
1872 methods [method_num++] = amethod;
1873
1874 for (i = 0; i < class->interface_count; i++)
1875 setup_generic_array_ifaces (class, class->interfaces [i], methods, first_generic + i * count_generic);
1876 } else {
1877 methods = mono_image_alloc (class->image, sizeof (MonoMethod*) * class->method.count);
1878 for (i = 0; i < class->method.count; ++i) {
1879 int idx = mono_metadata_translate_token_index (class->image, MONO_TABLE_METHOD, class->method.first + i + 1);
1880 methods [i] = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | idx, class);
1881 }
1882 }
1883
1884 if (MONO_CLASS_IS_INTERFACE (class)) {
1885 int slot = 0;
1886 /*Only assign slots to virtual methods as interfaces are allowed to have static methods.*/
1887 for (i = 0; i < class->method.count; ++i) {
1888 if (methods [i]->flags & METHOD_ATTRIBUTE_VIRTUAL)
1889 methods [i]->slot = slot++;
1890 }
1891 }
1892
1893 /* Needed because of the double-checking locking pattern */
1894 mono_memory_barrier ();
1895
1896 class->methods = methods;
1897
1898 if (mono_debugger_class_loaded_methods_func)
1899 mono_debugger_class_loaded_methods_func (class);
1900
1901 mono_loader_unlock ();
1902 }
1903
1904 /*
1905 * mono_class_get_method_by_index:
1906 *
1907 * Returns class->methods [index], initializing class->methods if neccesary.
1908 *
1909 * LOCKING: Acquires the loader lock.
1910 */
1911 MonoMethod*
1912 mono_class_get_method_by_index (MonoClass *class, int index)
1913 {
1914 /* Avoid calling setup_methods () if possible */
1915 if (class->generic_class && !class->methods) {
1916 MonoClass *gklass = class->generic_class->container_class;
1917 MonoMethod *m;
1918
1919 m = mono_class_inflate_generic_method_full (
1920 gklass->methods [index], class, mono_class_get_context (class));
1921 /*
1922 * If setup_methods () is called later for this class, no duplicates are created,
1923 * since inflate_generic_method guarantees that only one instance of a method
1924 * is created for each context.
1925 */
1926 /*
1927 mono_class_setup_methods (class);
1928 g_assert (m == class->methods [index]);
1929 */
1930 return m;
1931 } else {
1932 mono_class_setup_methods (class);
1933 g_assert (!class->exception_type); /*FIXME do proper error handling*/
1934 g_assert (index >= 0 && index < class->method.count);
1935 return class->methods [index];
1936 }
1937 }
1938
1939 /*
1940 * mono_class_get_inflated_method:
1941 *
1942 * Given an inflated class CLASS and a method METHOD which should be a method of
1943 * CLASS's generic definition, return the inflated method corresponding to METHOD.
1944 */
1945 MonoMethod*
1946 mono_class_get_inflated_method (MonoClass *class, MonoMethod *method)
1947 {
1948 MonoClass *gklass = class->generic_class->container_class;
1949 int i;
1950
1951 g_assert (method->klass == gklass);
1952
1953 mono_class_setup_methods (gklass);
1954 g_assert (!gklass->exception_type); /*FIXME do proper error handling*/
1955
1956 for (i = 0; i < gklass->method.count; ++i) {
1957 if (gklass->methods [i] == method) {
1958 if (class->methods)
1959 return class->methods [i];
1960 else
1961 return mono_class_inflate_generic_method_full (gklass->methods [i], class, mono_class_get_context (class));
1962 }
1963 }
1964
1965 return NULL;
1966 }
1967
1968 /*
1969 * mono_class_get_vtable_entry:
1970 *
1971 * Returns class->vtable [offset], computing it if neccesary.
1972 * LOCKING: Acquires the loader lock.
1973 */
1974 MonoMethod*
1975 mono_class_get_vtable_entry (MonoClass *class, int offset)
1976 {
1977 MonoMethod *m;
1978
1979 if (class->rank == 1) {
1980 /*
1981 * szarrays do not overwrite any methods of Array, so we can avoid
1982 * initializing their vtables in some cases.
1983 */
1984 mono_class_setup_vtable (class->parent);
1985 if (offset < class->parent->vtable_size)
1986 return class->parent->vtable [offset];
1987 }
1988
1989 if (class->generic_class) {
1990 MonoClass *gklass = class->generic_class->container_class;
1991 mono_class_setup_vtable (gklass);
1992 m = gklass->vtable [offset];
1993
1994 m = mono_class_inflate_generic_method_full (m, class, mono_class_get_context (class));
1995 } else {
1996 mono_class_setup_vtable (class);
1997 m = class->vtable [offset];
1998 }
1999
2000 return m;
2001 }
2002
2003 /*
2004 * mono_class_get_vtable_size:
2005 *
2006 * Return the vtable size for KLASS.
2007 */
2008 int
2009 mono_class_get_vtable_size (MonoClass *klass)
2010 {
2011 mono_class_setup_vtable (klass);
2012
2013 return klass->vtable_size;
2014 }
2015
2016 /*This method can fail the class.*/
2017 static void
2018 mono_class_setup_properties (MonoClass *class)
2019 {
2020 guint startm, endm, i, j;
2021 guint32 cols [MONO_PROPERTY_SIZE];
2022 MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
2023 MonoProperty *properties;
2024 guint32 last;
2025
2026 if (class->ext && class->ext->properties)
2027 return;
2028
2029 mono_loader_lock ();
2030
2031 if (class->ext && class->ext->properties) {
2032 mono_loader_unlock ();
2033 return;
2034 }
2035
2036 mono_class_alloc_ext (class);
2037
2038 if (class->generic_class) {
2039 MonoClass *gklass = class->generic_class->container_class;
2040
2041 mono_class_init (gklass);
2042 mono_class_setup_properties (gklass);
2043 if (gklass->exception_type) {
2044 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2045 mono_loader_unlock ();
2046 return;
2047 }
2048
2049 class->ext->property = gklass->ext->property;
2050
2051 properties = g_new0 (MonoProperty, class->ext->property.count + 1);
2052
2053 for (i = 0; i < class->ext->property.count; i++) {
2054 MonoProperty *prop = &properties [i];
2055
2056 *prop = gklass->ext->properties [i];
2057
2058 if (prop->get)
2059 prop->get = mono_class_inflate_generic_method_full (
2060 prop->get, class, mono_class_get_context (class));
2061 if (prop->set)
2062 prop->set = mono_class_inflate_generic_method_full (
2063 prop->set, class, mono_class_get_context (class));
2064
2065 prop->parent = class;
2066 }
2067 } else {
2068 int first = mono_metadata_properties_from_typedef (class->image, mono_metadata_token_index (class->type_token) - 1, &last);
2069 int count = last - first;
2070
2071 if (count) {
2072 mono_class_setup_methods (class);
2073 if (class->exception_type) {
2074 mono_loader_unlock ();
2075 return;
2076 }
2077 }
2078
2079 class->ext->property.first = first;
2080 class->ext->property.count = count;
2081 properties = mono_image_alloc0 (class->image, sizeof (MonoProperty) * count);
2082 for (i = first; i < last; ++i) {
2083 mono_metadata_decode_table_row (class->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
2084 properties [i - first].parent = class;
2085 properties [i - first].attrs = cols [MONO_PROPERTY_FLAGS];
2086 properties [i - first].name = mono_metadata_string_heap (class->image, cols [MONO_PROPERTY_NAME]);
2087
2088 startm = mono_metadata_methods_from_property (class->image, i, &endm);
2089 for (j = startm; j < endm; ++j) {
2090 MonoMethod *method;
2091
2092 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2093
2094 if (class->image->uncompressed_metadata)
2095 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2096 method = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], class);
2097 else
2098 method = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
2099
2100 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2101 case METHOD_SEMANTIC_SETTER:
2102 properties [i - first].set = method;
2103 break;
2104 case METHOD_SEMANTIC_GETTER:
2105 properties [i - first].get = method;
2106 break;
2107 default:
2108 break;
2109 }
2110 }
2111 }
2112 }
2113 /*Flush any pending writes as we do double checked locking on class->properties */
2114 mono_memory_barrier ();
2115
2116 /* Leave this assignment as the last op in the function */
2117 class->ext->properties = properties;
2118
2119 mono_loader_unlock ();
2120 }
2121
2122 static MonoMethod**
2123 inflate_method_listz (MonoMethod **methods, MonoClass *class, MonoGenericContext *context)
2124 {
2125 MonoMethod **om, **retval;
2126 int count;
2127
2128 for (om = methods, count = 0; *om; ++om, ++count)
2129 ;
2130
2131 retval = g_new0 (MonoMethod*, count + 1);
2132 count = 0;
2133 for (om = methods, count = 0; *om; ++om, ++count)
2134 retval [count] = mono_class_inflate_generic_method_full (*om, class, context);
2135
2136 return retval;
2137 }
2138
2139 /*This method can fail the class.*/
2140 static void
2141 mono_class_setup_events (MonoClass *class)
2142 {
2143 int first, count;
2144 guint startm, endm, i, j;
2145 guint32 cols [MONO_EVENT_SIZE];
2146 MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
2147 guint32 last;
2148 MonoEvent *events;
2149
2150 if (class->ext && class->ext->events)
2151 return;
2152
2153 mono_loader_lock ();
2154
2155 if (class->ext && class->ext->events) {
2156 mono_loader_unlock ();
2157 return;
2158 }
2159
2160 mono_class_alloc_ext (class);
2161
2162 if (class->generic_class) {
2163 MonoClass *gklass = class->generic_class->container_class;
2164 MonoGenericContext *context;
2165
2166 mono_class_setup_events (gklass);
2167 if (gklass->exception_type) {
2168 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2169 mono_loader_unlock ();
2170 return;
2171 }
2172
2173 class->ext->event = gklass->ext->event;
2174 class->ext->events = g_new0 (MonoEvent, class->ext->event.count);
2175
2176 if (class->ext->event.count)
2177 context = mono_class_get_context (class);
2178
2179 for (i = 0; i < class->ext->event.count; i++) {
2180 MonoEvent *event = &class->ext->events [i];
2181 MonoEvent *gevent = &gklass->ext->events [i];
2182
2183 event->parent = class;
2184 event->name = gevent->name;
2185 event->add = gevent->add ? mono_class_inflate_generic_method_full (gevent->add, class, context) : NULL;
2186 event->remove = gevent->remove ? mono_class_inflate_generic_method_full (gevent->remove, class, context) : NULL;
2187 event->raise = gevent->raise ? mono_class_inflate_generic_method_full (gevent->raise, class, context) : NULL;
2188 #ifndef MONO_SMALL_CONFIG
2189 event->other = gevent->other ? inflate_method_listz (gevent->other, class, context) : NULL;
2190 #endif
2191 event->attrs = gevent->attrs;
2192 }
2193
2194 mono_loader_unlock ();
2195 return;
2196 }
2197
2198 first = mono_metadata_events_from_typedef (class->image, mono_metadata_token_index (class->type_token) - 1, &last);
2199 count = last - first;
2200
2201 if (count) {
2202 mono_class_setup_methods (class);
2203 if (class->exception_type) {
2204 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2205 mono_loader_unlock ();
2206 return;
2207 }
2208 }
2209 class->ext->event.first = first;
2210 class->ext->event.count = count;
2211 events = mono_image_alloc0 (class->image, sizeof (MonoEvent) * class->ext->event.count);
2212 for (i = first; i < last; ++i) {
2213 MonoEvent *event = &events [i - first];
2214
2215 mono_metadata_decode_table_row (class->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
2216 event->parent = class;
2217 event->attrs = cols [MONO_EVENT_FLAGS];
2218 event->name = mono_metadata_string_heap (class->image, cols [MONO_EVENT_NAME]);
2219
2220 startm = mono_metadata_methods_from_event (class->image, i, &endm);
2221 for (j = startm; j < endm; ++j) {
2222 MonoMethod *method;
2223
2224 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2225
2226 if (class->image->uncompressed_metadata)
2227 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2228 method = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], class);
2229 else
2230 method = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
2231
2232 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2233 case METHOD_SEMANTIC_ADD_ON:
2234 event->add = method;
2235 break;
2236 case METHOD_SEMANTIC_REMOVE_ON:
2237 event->remove = method;
2238 break;
2239 case METHOD_SEMANTIC_FIRE:
2240 event->raise = method;
2241 break;
2242 case METHOD_SEMANTIC_OTHER: {
2243 #ifndef MONO_SMALL_CONFIG
2244 int n = 0;
2245
2246 if (event->other == NULL) {
2247 event->other = g_new0 (MonoMethod*, 2);
2248 } else {
2249 while (event->other [n])
2250 n++;
2251 event->other = g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
2252 }
2253 event->other [n] = method;
2254 /* NULL terminated */
2255 event->other [n + 1] = NULL;
2256 #endif
2257 break;
2258 }
2259 default:
2260 break;
2261 }
2262 }
2263 }
2264 /*Flush any pending writes as we do double checked locking on class->properties */
2265 mono_memory_barrier ();
2266
2267 /* Leave this assignment as the last op in the function */
2268 class->ext->events = events;
2269
2270 mono_loader_unlock ();
2271 }
2272
2273 /*
2274 * Global pool of interface IDs, represented as a bitset.
2275 * LOCKING: this is supposed to be accessed with the loader lock held.
2276 */
2277 static MonoBitSet *global_interface_bitset = NULL;
2278
2279 /*
2280 * mono_unload_interface_ids:
2281 * @bitset: bit set of interface IDs
2282 *
2283 * When an image is unloaded, the interface IDs associated with
2284 * the image are put back in the global pool of IDs so the numbers
2285 * can be reused.
2286 */
2287 void
2288 mono_unload_interface_ids (MonoBitSet *bitset)
2289 {
2290 mono_loader_lock ();
2291 mono_bitset_sub (global_interface_bitset, bitset);
2292 mono_loader_unlock ();
2293 }
2294
2295 /*
2296 * mono_get_unique_iid:
2297 * @class: interface
2298 *
2299 * Assign a unique integer ID to the interface represented by @class.
2300 * The ID will positive and as small as possible.
2301 * LOCKING: this is supposed to be called with the loader lock held.
2302 * Returns: the new ID.
2303 */
2304 static guint
2305 mono_get_unique_iid (MonoClass *class)
2306 {
2307 int iid;
2308
2309 g_assert (MONO_CLASS_IS_INTERFACE (class));
2310
2311 if (!global_interface_bitset) {
2312 global_interface_bitset = mono_bitset_new (128, 0);
2313 }
2314
2315 iid = mono_bitset_find_first_unset (global_interface_bitset, -1);
2316 if (iid < 0) {
2317 int old_size = mono_bitset_size (global_interface_bitset);
2318 MonoBitSet *new_set = mono_bitset_clone (global_interface_bitset, old_size * 2);
2319 mono_bitset_free (global_interface_bitset);
2320 global_interface_bitset = new_set;
2321 iid = old_size;
2322 }
2323 mono_bitset_set (global_interface_bitset, iid);
2324 /* set the bit also in the per-image set */
2325 if (class->image->interface_bitset) {
2326 if (iid >= mono_bitset_size (class->image->interface_bitset)) {
2327 MonoBitSet *new_set = mono_bitset_clone (class->image->interface_bitset, iid + 1);
2328 mono_bitset_free (class->image->interface_bitset);
2329 class->image->interface_bitset = new_set;
2330 }
2331 } else {
2332 class->image->interface_bitset = mono_bitset_new (iid + 1, 0);
2333 }
2334 mono_bitset_set (class->image->interface_bitset, iid);
2335
2336 #ifndef MONO_SMALL_CONFIG
2337 if (mono_print_vtable) {
2338 int generic_id;
2339 char *type_name = mono_type_full_name (&class->byval_arg);
2340 if (class->generic_class && !class->generic_class->context.class_inst->is_open) {
2341 generic_id = class->generic_class->context.class_inst->id;
2342 g_assert (generic_id != 0);
2343 } else {
2344 generic_id = 0;
2345 }
2346 printf ("Interface: assigned id %d to %s|%s|%d\n", iid, class->image->name, type_name, generic_id);
2347 g_free (type_name);
2348 }
2349 #endif
2350
2351 g_assert (iid <= 65535);
2352 return iid;
2353 }
2354
2355 static void
2356 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res, MonoError *error)
2357 {
2358 int i;
2359 MonoClass *ic;
2360
2361 mono_class_setup_interfaces (klass, error);
2362 if (!mono_error_ok (error))
2363 return;
2364
2365 for (i = 0; i < klass->interface_count; i++) {
2366 ic = klass->interfaces [i];
2367
2368 if (*res == NULL)
2369 *res = g_ptr_array_new ();
2370 g_ptr_array_add (*res, ic);
2371 mono_class_init (ic);
2372
2373 collect_implemented_interfaces_aux (ic, res, error);
2374 if (!mono_error_ok (error))
2375 return;
2376 }
2377 }
2378
2379 GPtrArray*
2380 mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error)
2381 {
2382 GPtrArray *res = NULL;
2383
2384 collect_implemented_interfaces_aux (klass, &res, error);
2385 if (!mono_error_ok (error)) {
2386 if (res)
2387 g_ptr_array_free (res, TRUE);
2388 return NULL;
2389 }
2390 return res;
2391 }
2392
2393 static int
2394 compare_interface_ids (const void *p_key, const void *p_element) {
2395 const MonoClass *key = p_key;
2396 const MonoClass *element = *(MonoClass**) p_element;
2397
2398 return (key->interface_id - element->interface_id);
2399 }
2400
2401 /*FIXME verify all callers if they should switch to mono_class_interface_offset_with_variance*/
2402 int
2403 mono_class_interface_offset (MonoClass *klass, MonoClass *itf) {
2404 MonoClass **result = bsearch (
2405 itf,
2406 klass->interfaces_packed,
2407 klass->interface_offsets_count,
2408 sizeof (MonoClass *),
2409 compare_interface_ids);
2410 if (result) {
2411 return klass->interface_offsets_packed [result - (klass->interfaces_packed)];
2412 } else {
2413 return -1;
2414 }
2415 }
2416
2417 /*
2418 * mono_class_interface_offset_with_variance:
2419 *
2420 * Return the interface offset of @itf in @klass. Sets @non_exact_match to TRUE if the match required variance check
2421 * If @itf is an interface with generic variant arguments, try to find the compatible one.
2422 *
2423 * Note that this function is responsible for resolving ambiguities. Right now we use whatever ordering interfaces_packed gives us.
2424 *
2425 * FIXME figure out MS disambiguation rules and fix this function.
2426 */
2427 int
2428 mono_class_interface_offset_with_variance (MonoClass *klass, MonoClass *itf, gboolean *non_exact_match) {
2429 int i = mono_class_interface_offset (klass, itf);
2430 *non_exact_match = FALSE;
2431 if (i >= 0)
2432 return i;
2433
2434 if (!mono_class_has_variant_generic_params (itf))
2435 return -1;
2436
2437 for (i = 0; i < klass->interface_offsets_count; i++) {
2438 if (mono_class_is_variant_compatible (itf, klass->interfaces_packed [i])) {
2439 *non_exact_match = TRUE;
2440 return klass->interface_offsets_packed [i];
2441 }
2442 }
2443
2444 return -1;
2445 }
2446
2447 static void
2448 print_implemented_interfaces (MonoClass *klass) {
2449 char *name;
2450 MonoError error;
2451 GPtrArray *ifaces = NULL;
2452 int i;
2453 int ancestor_level = 0;
2454
2455 name = mono_type_get_full_name (klass);
2456 printf ("Packed interface table for class %s has size %d\n", name, klass->interface_offsets_count);
2457 g_free (name);
2458
2459 for (i = 0; i < klass->interface_offsets_count; i++)
2460 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2461 klass->interfaces_packed [i]->interface_id,
2462 klass->interface_offsets_packed [i],
2463 klass->interfaces_packed [i]->method.count,
2464 klass->interfaces_packed [i]->name_space,
2465 klass->interfaces_packed [i]->name );
2466 printf ("Interface flags: ");
2467 for (i = 0; i <= klass->max_interface_id; i++)
2468 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
2469 printf ("(%d,T)", i);
2470 else
2471 printf ("(%d,F)", i);
2472 printf ("\n");
2473 printf ("Dump interface flags:");
2474 #ifdef COMPRESSED_INTERFACE_BITMAP
2475 {
2476 const uint8_t* p = klass->interface_bitmap;
2477 i = klass->max_interface_id;
2478 while (i > 0) {
2479 printf (" %d x 00 %02X", p [0], p [1]);
2480 i -= p [0] * 8;
2481 i -= 8;
2482 }
2483 }
2484 #else
2485 for (i = 0; i < ((((klass->max_interface_id + 1) >> 3)) + (((klass->max_interface_id + 1) & 7)? 1 :0)); i++)
2486 printf (" %02X", klass->interface_bitmap [i]);
2487 #endif
2488 printf ("\n");
2489 while (klass != NULL) {
2490 printf ("[LEVEL %d] Implemented interfaces by class %s:\n", ancestor_level, klass->name);
2491 ifaces = mono_class_get_implemented_interfaces (klass, &error);
2492 if (!mono_error_ok (&error)) {
2493 printf (" Type failed due to %s\n", mono_error_get_message (&error));
2494 mono_error_cleanup (&error);
2495 } else if (ifaces) {
2496 for (i = 0; i < ifaces->len; i++) {
2497 MonoClass *ic = g_ptr_array_index (ifaces, i);
2498 printf (" [UIID %d] interface %s\n", ic->interface_id, ic->name);
2499 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2500 ic->interface_id,
2501 mono_class_interface_offset (klass, ic),
2502 ic->method.count,
2503 ic->name_space,
2504 ic->name );
2505 }
2506 g_ptr_array_free (ifaces, TRUE);
2507 }
2508 ancestor_level ++;
2509 klass = klass->parent;
2510 }
2511 }
2512
2513 static MonoClass*
2514 inflate_class_one_arg (MonoClass *gtype, MonoClass *arg0)
2515 {
2516 MonoType *args [1];
2517 args [0] = &arg0->byval_arg;
2518
2519 return mono_class_bind_generic_parameters (gtype, 1, args, FALSE);
2520 }
2521
2522 static MonoClass*
2523 array_class_get_if_rank (MonoClass *class, guint rank)
2524 {
2525 return rank ? mono_array_class_get (class, rank) : class;
2526 }
2527
2528 static void
2529 fill_valuetype_array_derived_types (MonoClass **valuetype_types, MonoClass *eclass, int rank)
2530 {
2531 valuetype_types [0] = eclass;
2532 if (eclass == mono_defaults.int16_class)
2533 valuetype_types [1] = mono_defaults.uint16_class;
2534 else if (eclass == mono_defaults.uint16_class)
2535 valuetype_types [1] = mono_defaults.int16_class;
2536 else if (eclass == mono_defaults.int32_class)
2537 valuetype_types [1] = mono_defaults.uint32_class;
2538 else if (eclass == mono_defaults.uint32_class)
2539 valuetype_types [1] = mono_defaults.int32_class;
2540 else if (eclass == mono_defaults.int64_class)
2541 valuetype_types [1] = mono_defaults.uint64_class;
2542 else if (eclass == mono_defaults.uint64_class)
2543 valuetype_types [1] = mono_defaults.int64_class;
2544 else if (eclass == mono_defaults.byte_class)
2545 valuetype_types [1] = mono_defaults.sbyte_class;
2546 else if (eclass == mono_defaults.sbyte_class)
2547 valuetype_types [1] = mono_defaults.byte_class;
2548 else if (eclass->enumtype && mono_class_enum_basetype (eclass))
2549 valuetype_types [1] = mono_class_from_mono_type (mono_class_enum_basetype (eclass));
2550 }
2551
2552 /* this won't be needed once bug #325495 is completely fixed
2553 * though we'll need something similar to know which interfaces to allow
2554 * in arrays when they'll be lazyly created
2555 *
2556 * FIXME: System.Array/InternalEnumerator don't need all this interface fabrication machinery.
2557 * MS returns diferrent types based on which instance is called. For example:
2558 * object obj = new byte[10][];
2559 * Type a = ((IEnumerable<byte[]>)obj).GetEnumerator ().GetType ();
2560 * Type b = ((IEnumerable<IList<byte>>)obj).GetEnumerator ().GetType ();
2561 * a != b ==> true
2562 *
2563 * Fixing this should kill quite some code, save some bits and improve compatibility.
2564 */
2565 static MonoClass**
2566 get_implicit_generic_array_interfaces (MonoClass *class, int *num, int *is_enumerator)
2567 {
2568 MonoClass *eclass = class->element_class;
2569 static MonoClass* generic_icollection_class = NULL;
2570 static MonoClass* generic_ienumerable_class = NULL;
2571 static MonoClass* generic_ienumerator_class = NULL;
2572 MonoClass *valuetype_types[2] = { NULL, NULL };
2573 MonoClass **interfaces = NULL;
2574 int i, interface_count, real_count, original_rank;
2575 int all_interfaces;
2576 gboolean internal_enumerator;
2577 gboolean eclass_is_valuetype;
2578
2579 if (!mono_defaults.generic_ilist_class) {
2580 *num = 0;
2581 return NULL;
2582 }
2583 internal_enumerator = FALSE;
2584 eclass_is_valuetype = FALSE;
2585 original_rank = eclass->rank;
2586 if (class->byval_arg.type != MONO_TYPE_SZARRAY) {
2587 if (class->generic_class && class->nested_in == mono_defaults.array_class && strcmp (class->name, "InternalEnumerator`1") == 0) {
2588 /*
2589 * For a Enumerator<T[]> we need to get the list of interfaces for T.
2590 */
2591 eclass = mono_class_from_mono_type (class->generic_class->context.class_inst->type_argv [0]);
2592 original_rank = eclass->rank;
2593 eclass = eclass->element_class;
2594 internal_enumerator = TRUE;
2595 *is_enumerator = TRUE;
2596 } else {
2597 *num = 0;
2598 return NULL;
2599 }
2600 }
2601
2602 /*
2603 * with this non-lazy impl we can't implement all the interfaces so we do just the minimal stuff
2604 * for deep levels of arrays of arrays (string[][] has all the interfaces, string[][][] doesn't)
2605 */
2606 all_interfaces = eclass->rank && eclass->element_class->rank? FALSE: TRUE;
2607
2608 if (!generic_icollection_class) {
2609 generic_icollection_class = mono_class_from_name (mono_defaults.corlib,
2610 "System.Collections.Generic", "ICollection`1");
2611 generic_ienumerable_class = mono_class_from_name (mono_defaults.corlib,
2612 "System.Collections.Generic", "IEnumerable`1");
2613 generic_ienumerator_class = mono_class_from_name (mono_defaults.corlib,
2614 "System.Collections.Generic", "IEnumerator`1");
2615 }
2616
2617 mono_class_init (eclass);
2618
2619 /*
2620 * Arrays in 2.0 need to implement a number of generic interfaces
2621 * (IList`1, ICollection`1, IEnumerable`1 for a number of types depending
2622 * on the element class). We collect the types needed to build the
2623 * instantiations in interfaces at intervals of 3, because 3 are
2624 * the generic interfaces needed to implement.
2625 */
2626 if (eclass->valuetype) {
2627 fill_valuetype_array_derived_types (valuetype_types, eclass, original_rank);
2628
2629 /* IList, ICollection, IEnumerable */
2630 real_count = interface_count = valuetype_types [1] ? 6 : 3;
2631 if (internal_enumerator) {
2632 ++real_count;
2633 if (valuetype_types [1])
2634 ++real_count;
2635 }
2636
2637 interfaces = g_malloc0 (sizeof (MonoClass*) * real_count);
2638 interfaces [0] = valuetype_types [0];
2639 if (valuetype_types [1])
2640 interfaces [3] = valuetype_types [1];
2641
2642 eclass_is_valuetype = TRUE;
2643 } else {
2644 int j;
2645 int idepth = eclass->idepth;
2646 if (!internal_enumerator)
2647 idepth--;
2648
2649 // FIXME: This doesn't seem to work/required for generic params
2650 if (!(eclass->this_arg.type == MONO_TYPE_VAR || eclass->this_arg.type == MONO_TYPE_MVAR || (eclass->image->dynamic && !eclass->wastypebuilder)))
2651 mono_class_setup_interface_offsets (eclass);
2652
2653 interface_count = all_interfaces? eclass->interface_offsets_count: eclass->interface_count;
2654 /* we add object for interfaces and the supertypes for the other
2655 * types. The last of the supertypes is the element class itself which we
2656 * already created the explicit interfaces for (so we include it for IEnumerator
2657 * and exclude it for arrays).
2658 */
2659 if (MONO_CLASS_IS_INTERFACE (eclass))
2660 interface_count++;
2661 else
2662 interface_count += idepth;
2663 if (eclass->rank && eclass->element_class->valuetype) {
2664 fill_valuetype_array_derived_types (valuetype_types, eclass->element_class, original_rank);
2665 if (valuetype_types [1])
2666 ++interface_count;
2667 }
2668 /* IList, ICollection, IEnumerable */
2669 interface_count *= 3;
2670 real_count = interface_count;
2671 if (internal_enumerator) {
2672 real_count += (MONO_CLASS_IS_INTERFACE (eclass) ? 1 : idepth) + eclass->interface_offsets_count;
2673 if (valuetype_types [1])
2674 ++real_count;
2675 }
2676 interfaces = g_malloc0 (sizeof (MonoClass*) * real_count);
2677 if (MONO_CLASS_IS_INTERFACE (eclass)) {
2678 interfaces [0] = mono_defaults.object_class;
2679 j = 3;
2680 } else {
2681 j = 0;
2682 for (i = 0; i < idepth; i++) {
2683 mono_class_init (eclass->supertypes [i]);
2684 interfaces [j] = eclass->supertypes [i];
2685 j += 3;
2686 }
2687 }
2688 if (all_interfaces) {
2689 for (i = 0; i < eclass->interface_offsets_count; i++) {
2690 interfaces [j] = eclass->interfaces_packed [i];
2691 j += 3;
2692 }
2693 } else {
2694 for (i = 0; i < eclass->interface_count; i++) {
2695 interfaces [j] = eclass->interfaces [i];
2696 j += 3;
2697 }
2698 }
2699 if (valuetype_types [1]) {
2700 interfaces [j] = array_class_get_if_rank (valuetype_types [1], original_rank);
2701 j += 3;
2702 }
2703 }
2704
2705 /* instantiate the generic interfaces */
2706 for (i = 0; i < interface_count; i += 3) {
2707 MonoClass *iface = interfaces [i];
2708
2709 interfaces [i + 0] = inflate_class_one_arg (mono_defaults.generic_ilist_class, iface);
2710 interfaces [i + 1] = inflate_class_one_arg (generic_icollection_class, iface);
2711 interfaces [i + 2] = inflate_class_one_arg (generic_ienumerable_class, iface);
2712 }
2713 if (internal_enumerator) {
2714 int j;
2715 /* instantiate IEnumerator<iface> */
2716 for (i = 0; i < interface_count; i++) {
2717 interfaces [i] = inflate_class_one_arg (generic_ienumerator_class, interfaces [i]);
2718 }
2719 j = interface_count;
2720 if (!eclass_is_valuetype) {
2721 if (MONO_CLASS_IS_INTERFACE (eclass)) {
2722 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, mono_defaults.object_class);
2723 j ++;
2724 } else {
2725 for (i = 0; i < eclass->idepth; i++) {
2726 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->supertypes [i]);
2727 j ++;
2728 }
2729 }
2730 for (i = 0; i < eclass->interface_offsets_count; i++) {
2731 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->interfaces_packed [i]);
2732 j ++;
2733 }
2734 } else {
2735 interfaces [j++] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [0], original_rank));
2736 }
2737 if (valuetype_types [1])
2738 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [1], original_rank));
2739 }
2740 #if 0
2741 {
2742 char *type_name = mono_type_get_name_full (&class->byval_arg, 0);
2743 for (i = 0; i < real_count; ++i) {
2744 char *name = mono_type_get_name_full (&interfaces [i]->byval_arg, 0);
2745 g_print ("%s implements %s\n", type_name, name);
2746 g_free (name);
2747 }
2748 g_free (type_name);
2749 }
2750 #endif
2751 *num = real_count;
2752 return interfaces;
2753 }
2754
2755 static int
2756 find_array_interface (MonoClass *klass, const char *name)
2757 {
2758 int i;
2759 for (i = 0; i < klass->interface_count; ++i) {
2760 if (strcmp (klass->interfaces [i]->name, name) == 0)
2761 return i;
2762 }
2763 return -1;
2764 }
2765
2766 /*
2767 * Return the number of virtual methods.
2768 * Even for interfaces we can't simply return the number of methods as all CLR types are allowed to have static methods.
2769 * Return -1 on failure.
2770 * FIXME It would be nice if this information could be cached somewhere.
2771 */
2772 static int
2773 count_virtual_methods (MonoClass *class)
2774 {
2775 int i, count = 0;
2776 guint32 flags;
2777 class = mono_class_get_generic_type_definition (class); /*We can find this information by looking at the GTD*/
2778
2779 if (class->methods || !MONO_CLASS_HAS_STATIC_METADATA (class)) {
2780 mono_class_setup_methods (class);
2781 if (class->exception_type)
2782 return -1;
2783
2784 for (i = 0; i < class->method.count; ++i) {
2785 flags = class->methods [i]->flags;
2786 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
2787 ++count;
2788 }
2789 } else {
2790 for (i = 0; i < class->method.count; ++i) {
2791 flags = mono_metadata_decode_table_row_col (class->image, MONO_TABLE_METHOD, class->method.first + i, MONO_METHOD_FLAGS);
2792
2793 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
2794 ++count;
2795 }
2796 }
2797 return count;
2798 }
2799
2800 static int
2801 find_interface (int num_ifaces, MonoClass **interfaces_full, MonoClass *ic)
2802 {
2803 int m, l = 0;
2804 if (!num_ifaces)
2805 return -1;
2806 while (1) {
2807 if (l > num_ifaces)
2808 return -1;
2809 m = (l + num_ifaces) / 2;
2810 if (interfaces_full [m] == ic)
2811 return m;
2812 if (l == num_ifaces)
2813 return -1;
2814 if (!interfaces_full [m] || interfaces_full [m]->interface_id > ic->interface_id) {
2815 num_ifaces = m - 1;
2816 } else {
2817 l = m + 1;
2818 }
2819 }
2820 }
2821
2822 static int
2823 find_interface_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic)
2824 {
2825 int i = find_interface (num_ifaces, interfaces_full, ic);
2826 if (ic >= 0)
2827 return interface_offsets_full [i];
2828 return -1;
2829 }
2830
2831 static mono_bool
2832 set_interface_and_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic, int offset, mono_bool force_set)
2833 {
2834 int i = find_interface (num_ifaces, interfaces_full, ic);
2835 if (i >= 0) {
2836 if (!force_set)
2837 return TRUE;
2838 interface_offsets_full [i] = offset;
2839 return FALSE;
2840 }
2841 for (i = 0; i < num_ifaces; ++i) {
2842 if (interfaces_full [i]) {
2843 int end;
2844 if (interfaces_full [i]->interface_id < ic->interface_id)
2845 continue;
2846 end = i + 1;
2847 while (end < num_ifaces && interfaces_full [end]) end++;
2848 memmove (interfaces_full + i + 1, interfaces_full + i, sizeof (MonoClass*) * (end - i));
2849 memmove (interface_offsets_full + i + 1, interface_offsets_full + i, sizeof (int) * (end - i));
2850 }
2851 interfaces_full [i] = ic;
2852 interface_offsets_full [i] = offset;
2853 break;
2854 }
2855 return FALSE;
2856 }
2857
2858 #ifdef COMPRESSED_INTERFACE_BITMAP
2859
2860 /*
2861 * Compressed interface bitmap design.
2862 *
2863 * Interface bitmaps take a large amount of memory, because their size is
2864 * linear with the maximum interface id assigned in the process (each interface
2865 * is assigned a unique id as it is loaded). The number of interface classes
2866 * is high because of the many implicit interfaces implemented by arrays (we'll
2867 * need to lazy-load them in the future).
2868 * Most classes implement a very small number of interfaces, so the bitmap is
2869 * sparse. This bitmap needs to be checked by interface casts, so access to the
2870 * needed bit must be fast and doable with few jit instructions.
2871 *
2872 * The current compression format is as follows:
2873 * *) it is a sequence of one or more two-byte elements
2874 * *) the first byte in the element is the count of empty bitmap bytes
2875 * at the current bitmap position
2876 * *) the second byte in the element is an actual bitmap byte at the current
2877 * bitmap position
2878 *
2879 * As an example, the following compressed bitmap bytes:
2880 * 0x07 0x01 0x00 0x7
2881 * correspond to the following bitmap:
2882 * 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x07
2883 *
2884 * Each two-byte element can represent up to 2048 bitmap bits, but as few as a single
2885 * bitmap byte for non-sparse sequences. In practice the interface bitmaps created
2886 * during a gmcs bootstrap are reduced to less tha 5% of the original size.
2887 */
2888
2889 /**
2890 * mono_compress_bitmap:
2891 * @dest: destination buffer
2892 * @bitmap: bitmap buffer
2893 * @size: size of @bitmap in bytes
2894 *
2895 * This is a mono internal function.
2896 * The @bitmap data is compressed into a format that is small but
2897 * still searchable in few instructions by the JIT and runtime.
2898 * The compressed data is stored in the buffer pointed to by the
2899 * @dest array. Passing a #NULL value for @dest allows to just compute
2900 * the size of the buffer.
2901 * This compression algorithm assumes the bits set in the bitmap are
2902 * few and far between, like in interface bitmaps.
2903 * Returns: the size of the compressed bitmap in bytes.
2904 */
2905 int
2906 mono_compress_bitmap (uint8_t *dest, const uint8_t *bitmap, int size)
2907 {
2908 int numz = 0;
2909 int res = 0;
2910 const uint8_t *end = bitmap + size;
2911 while (bitmap < end) {
2912 if (*bitmap || numz == 255) {
2913 if (dest) {
2914 *dest++ = numz;
2915 *dest++ = *bitmap;
2916 }
2917 res += 2;
2918 numz = 0;
2919 bitmap++;
2920 continue;
2921 }
2922 bitmap++;
2923 numz++;
2924 }
2925 if (numz) {
2926 res += 2;
2927 if (dest) {
2928 *dest++ = numz;
2929 *dest++ = 0;
2930 }
2931 }
2932 return res;
2933 }
2934
2935 /**
2936 * mono_class_interface_match:
2937 * @bitmap: a compressed bitmap buffer
2938 * @id: the index to check in the bitmap
2939 *
2940 * This is a mono internal function.
2941 * Checks if a bit is set in a compressed interface bitmap. @id must
2942 * be already checked for being smaller than the maximum id encoded in the
2943 * bitmap.
2944 *
2945 * Returns: a non-zero value if bit @id is set in the bitmap @bitmap,
2946 * #FALSE otherwise.
2947 */
2948 int
2949 mono_class_interface_match (const uint8_t *bitmap, int id)
2950 {
2951 while (TRUE) {
2952 id -= bitmap [0] * 8;
2953 if (id < 8) {
2954 if (id < 0)
2955 return 0;
2956 return bitmap [1] & (1 << id);
2957 }
2958 bitmap += 2;
2959 id -= 8;
2960 }
2961 }
2962 #endif
2963
2964 /*
2965 * LOCKING: this is supposed to be called with the loader lock held.
2966 * Return -1 on failure and set exception_type
2967 */
2968 static int
2969 setup_interface_offsets (MonoClass *class, int cur_slot)
2970 {
2971 MonoError error;
2972 MonoClass *k, *ic;
2973 int i, j, max_iid, num_ifaces;
2974 MonoClass **interfaces_full = NULL;
2975 int *interface_offsets_full = NULL;
2976 GPtrArray *ifaces;
2977 GPtrArray **ifaces_array = NULL;
2978 int interface_offsets_count;
2979 MonoClass **array_interfaces = NULL;
2980 int num_array_interfaces;
2981 int is_enumerator = FALSE;
2982
2983 mono_class_setup_supertypes (class);
2984 /*
2985 * get the implicit generic interfaces for either the arrays or for System.Array/InternalEnumerator<T>
2986 * implicit interfaces have the property that they are assigned the same slot in the
2987 * vtables for compatible interfaces
2988 */
2989 array_interfaces = get_implicit_generic_array_interfaces (class, &num_array_interfaces, &is_enumerator);
2990
2991 /* compute maximum number of slots and maximum interface id */
2992 max_iid = 0;
2993 num_ifaces = num_array_interfaces; /* this can include duplicated ones */
2994 ifaces_array = g_new0 (GPtrArray *, class->idepth);
2995 for (j = 0; j < class->idepth; j++) {
2996 k = class->supertypes [j];
2997 num_ifaces += k->interface_count;
2998 for (i = 0; i < k->interface_count; i++) {
2999 ic = k->interfaces [i];
3000
3001 if (!ic->inited)
3002 mono_class_init (ic);
3003
3004 if (max_iid < ic->interface_id)
3005 max_iid = ic->interface_id;
3006 }
3007 ifaces = mono_class_get_implemented_interfaces (k, &error);
3008 if (!mono_error_ok (&error)) {
3009 char *name = mono_type_get_full_name (k);
3010 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)));
3011 g_free (name);
3012 mono_error_cleanup (&error);
3013 cur_slot = -1;
3014 goto end;
3015 }
3016 if (ifaces) {
3017 num_ifaces += ifaces->len;
3018 for (i = 0; i < ifaces->len; ++i) {
3019 ic = g_ptr_array_index (ifaces, i);
3020 if (max_iid < ic->interface_id)
3021 max_iid = ic->interface_id;
3022 }
3023 ifaces_array [j] = ifaces;
3024 }
3025 }
3026
3027 for (i = 0; i < num_array_interfaces; ++i) {
3028 ic = array_interfaces [i];
3029 mono_class_init (ic);
3030 if (max_iid < ic->interface_id)
3031 max_iid = ic->interface_id;
3032 }
3033
3034 if (MONO_CLASS_IS_INTERFACE (class)) {
3035 num_ifaces++;
3036 if (max_iid < class->interface_id)
3037 max_iid = class->interface_id;
3038 }
3039 class->max_interface_id = max_iid;
3040 /* compute vtable offset for interfaces */
3041 interfaces_full = g_malloc0 (sizeof (MonoClass*) * num_ifaces);
3042 interface_offsets_full = g_malloc (sizeof (int) * num_ifaces);
3043
3044 for (i = 0; i < num_ifaces; i++) {
3045 interface_offsets_full [i] = -1;
3046 }
3047
3048 /* skip the current class */
3049 for (j = 0; j < class->idepth - 1; j++) {
3050 k = class->supertypes [j];
3051 ifaces = ifaces_array [j];
3052
3053 if (ifaces) {
3054 for (i = 0; i < ifaces->len; ++i) {
3055 int io;
3056 ic = g_ptr_array_index (ifaces, i);
3057
3058 /*Force the sharing of interface offsets between parent and subtypes.*/
3059 io = mono_class_interface_offset (k, ic);
3060 g_assert (io >= 0);
3061 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, io, TRUE);
3062 }
3063 }
3064 }
3065
3066 g_assert (class == class->supertypes [class->idepth - 1]);
3067 ifaces = ifaces_array [class->idepth - 1];
3068 if (ifaces) {
3069 for (i = 0; i < ifaces->len; ++i) {
3070 int count;
3071 ic = g_ptr_array_index (ifaces, i);
3072 if (set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, cur_slot, FALSE))
3073 continue;
3074 count = count_virtual_methods (ic);
3075 if (count == -1) {
3076 char *name = mono_type_get_full_name (ic);
3077 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Error calculating interface offset of %s", name));
3078 g_free (name);
3079 cur_slot = -1;
3080 goto end;
3081 }
3082 cur_slot += count;
3083 }
3084 }
3085
3086 if (MONO_CLASS_IS_INTERFACE (class))
3087 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, class, cur_slot, TRUE);
3088
3089 if (num_array_interfaces) {
3090 if (is_enumerator) {
3091 int ienumerator_idx = find_array_interface (class, "IEnumerator`1");
3092 int ienumerator_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, class->interfaces [ienumerator_idx]);
3093 g_assert (ienumerator_offset >= 0);
3094 for (i = 0; i < num_array_interfaces; ++i) {
3095 ic = array_interfaces [i];
3096 if (strcmp (ic->name, "IEnumerator`1") == 0)
3097 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, ienumerator_offset, TRUE);
3098 else
3099 g_assert_not_reached ();
3100 /*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);*/
3101 }
3102 } else {
3103 int ilist_offset, icollection_offset, ienumerable_offset;
3104 int ilist_iface_idx = find_array_interface (class, "IList`1");
3105 MonoClass* ilist_class = class->interfaces [ilist_iface_idx];
3106 int icollection_iface_idx = find_array_interface (ilist_class, "ICollection`1");
3107 int ienumerable_iface_idx = find_array_interface (ilist_class, "IEnumerable`1");
3108 ilist_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, class->interfaces [ilist_iface_idx]);
3109 icollection_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [icollection_iface_idx]);
3110 ienumerable_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [ienumerable_iface_idx]);
3111 g_assert (ilist_offset >= 0 && icollection_offset >= 0 && ienumerable_offset >= 0);
3112 for (i = 0; i < num_array_interfaces; ++i) {
3113 int offset;
3114 ic = array_interfaces [i];
3115 if (ic->generic_class->container_class == mono_defaults.generic_ilist_class)
3116 offset = ilist_offset;
3117 else if (strcmp (ic->name, "ICollection`1") == 0)
3118 offset = icollection_offset;
3119 else if (strcmp (ic->name, "IEnumerable`1") == 0)
3120 offset = ienumerable_offset;
3121 else
3122 g_assert_not_reached ();
3123 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, offset, TRUE);
3124 /*g_print ("type %s has %s offset at %d (%s)\n", class->name, ic->name, offset, class->interfaces [0]->name);*/
3125 }
3126 }
3127 }
3128
3129 for (interface_offsets_count = 0, i = 0; i < num_ifaces; i++) {
3130 if (interface_offsets_full [i] != -1) {
3131 interface_offsets_count ++;
3132 }
3133 }
3134
3135 /*
3136 * We might get called twice: once from mono_class_init () then once from
3137 * mono_class_setup_vtable ().
3138 */
3139 if (class->interfaces_packed) {
3140 g_assert (class->interface_offsets_count == interface_offsets_count);
3141 } else {
3142 uint8_t *bitmap;
3143 int bsize;
3144 class->interface_offsets_count = interface_offsets_count;
3145 class->interfaces_packed = mono_image_alloc (class->image, sizeof (MonoClass*) * interface_offsets_count);
3146 class->interface_offsets_packed = mono_image_alloc (class->image, sizeof (guint16) * interface_offsets_count);
3147 bsize = (sizeof (guint8) * ((max_iid + 1) >> 3)) + (((max_iid + 1) & 7)? 1 :0);
3148 #ifdef COMPRESSED_INTERFACE_BITMAP
3149 bitmap = g_malloc0 (bsize);
3150 #else
3151 bitmap = mono_image_alloc0 (class->image, bsize);
3152 #endif
3153 for (i = 0; i < interface_offsets_count; i++) {
3154 int id = interfaces_full [i]->interface_id;
3155 bitmap [id >> 3] |= (1 << (id & 7));
3156 class->interfaces_packed [i] = interfaces_full [i];
3157 class->interface_offsets_packed [i] = interface_offsets_full [i];
3158 /*if (num_array_interfaces)
3159 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]);*/
3160 }
3161 #ifdef COMPRESSED_INTERFACE_BITMAP
3162 i = mono_compress_bitmap (NULL, bitmap, bsize);
3163 class->interface_bitmap = mono_image_alloc0 (class->image, i);
3164 mono_compress_bitmap (class->interface_bitmap, bitmap, bsize);
3165 g_free (bitmap);
3166 #else
3167 class->interface_bitmap = bitmap;
3168 #endif
3169 }
3170
3171 end:
3172 g_free (interfaces_full);
3173 g_free (interface_offsets_full);
3174 g_free (array_interfaces);
3175 for (i = 0; i < class->idepth; i++) {
3176 ifaces = ifaces_array [i];
3177 if (ifaces)
3178 g_ptr_array_free (ifaces, TRUE);
3179 }
3180 g_free (ifaces_array);
3181
3182 //printf ("JUST DONE: ");
3183 //print_implemented_interfaces (class);
3184
3185 return cur_slot;
3186 }
3187
3188 /*
3189 * Setup interface offsets for interfaces.
3190 * Initializes:
3191 * - class->max_interface_id
3192 * - class->interface_offsets_count
3193 * - class->interfaces_packed
3194 * - class->interface_offsets_packed
3195 * - class->interface_bitmap
3196 *
3197 * This function can fail @class.
3198 */
3199 void
3200 mono_class_setup_interface_offsets (MonoClass *class)
3201 {
3202 mono_loader_lock ();
3203
3204 setup_interface_offsets (class, 0);
3205
3206 mono_loader_unlock ();
3207 }
3208
3209 /*
3210 * mono_class_setup_vtable:
3211 *
3212 * Creates the generic vtable of CLASS.
3213 * Initializes the following fields in MonoClass:
3214 * - vtable
3215 * - vtable_size
3216 * Plus all the fields initialized by setup_interface_offsets ().
3217 * If there is an error during vtable construction, class->exception_type is set.
3218 *
3219 * LOCKING: Acquires the loader lock.
3220 */
3221 void
3222 mono_class_setup_vtable (MonoClass *class)
3223 {
3224 MonoMethod **overrides;
3225 MonoGenericContext *context;
3226 guint32 type_token;
3227 int onum = 0;
3228 gboolean ok = TRUE;
3229
3230 if (class->vtable)
3231 return;
3232
3233 if (mono_debug_using_mono_debugger ())
3234 /* The debugger currently depends on this */
3235 mono_class_setup_methods (class);
3236
3237 if (MONO_CLASS_IS_INTERFACE (class)) {
3238 /* This sets method->slot for all methods if this is an interface */
3239 mono_class_setup_methods (class);
3240 return;
3241 }
3242
3243 if (class->exception_type)
3244 return;
3245
3246 mono_loader_lock ();
3247
3248 if (class->vtable) {
3249 mono_loader_unlock ();
3250 return;
3251 }
3252
3253 mono_stats.generic_vtable_count ++;
3254
3255 if (class->generic_class) {
3256 context = mono_class_get_context (class);
3257 type_token = class->generic_class->container_class->type_token;
3258 } else {
3259 context = (MonoGenericContext *) class->generic_container;
3260 type_token = class->type_token;
3261 }
3262
3263 if (class->image->dynamic) {
3264 /* Generic instances can have zero method overrides without causing any harm.
3265 * This is true since we don't do layout all over again for them, we simply inflate
3266 * the layout of the parent.
3267 */
3268 mono_reflection_get_dynamic_overrides (class, &overrides, &onum);
3269 } else {
3270 /* The following call fails if there are missing methods in the type */
3271 /* FIXME it's probably a good idea to avoid this for generic instances. */
3272 ok = mono_class_get_overrides_full (class->image, type_token, &overrides, &onum, context);
3273 }
3274
3275 if (ok)
3276 mono_class_setup_vtable_general (class, overrides, onum);
3277
3278 g_free (overrides);
3279
3280 mono_loader_unlock ();
3281
3282 return;
3283 }
3284
3285 #define DEBUG_INTERFACE_VTABLE_CODE 0
3286 #define TRACE_INTERFACE_VTABLE_CODE 0
3287 #define VERIFY_INTERFACE_VTABLE_CODE 0
3288 #define VTABLE_SELECTOR (1)
3289
3290 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3291 #define DEBUG_INTERFACE_VTABLE(stmt) do {\
3292 if (!(VTABLE_SELECTOR)) break; \
3293 stmt;\
3294 } while (0)
3295 #else
3296 #define DEBUG_INTERFACE_VTABLE(stmt)
3297 #endif
3298
3299 #if TRACE_INTERFACE_VTABLE_CODE
3300 #define TRACE_INTERFACE_VTABLE(stmt) do {\
3301 if (!(VTABLE_SELECTOR)) break; \
3302 stmt;\
3303 } while (0)
3304 #else
3305 #define TRACE_INTERFACE_VTABLE(stmt)
3306 #endif
3307
3308 #if VERIFY_INTERFACE_VTABLE_CODE
3309 #define VERIFY_INTERFACE_VTABLE(stmt) do {\
3310 if (!(VTABLE_SELECTOR)) break; \
3311 stmt;\
3312 } while (0)
3313 #else
3314 #define VERIFY_INTERFACE_VTABLE(stmt)
3315 #endif
3316
3317
3318 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3319 static char*
3320 mono_signature_get_full_desc (MonoMethodSignature *sig, gboolean include_namespace)
3321 {
3322 int i;
3323 char *result;
3324 GString *res = g_string_new ("");
3325
3326 g_string_append_c (res, '(');
3327 for (i = 0; i < sig->param_count; ++i) {
3328 if (i > 0)
3329 g_string_append_c (res, ',');
3330 mono_type_get_desc (res, sig->params [i], include_namespace);
3331 }
3332 g_string_append (res, ")=>");
3333 if (sig->ret != NULL) {
3334 mono_type_get_desc (res, sig->ret, include_namespace);
3335 } else {
3336 g_string_append (res, "NULL");
3337 }
3338 result = res->str;
3339 g_string_free (res, FALSE);
3340 return result;
3341 }
3342 static void
3343 print_method_signatures (MonoMethod *im, MonoMethod *cm) {
3344 char *im_sig = mono_signature_get_full_desc (mono_method_signature (im), TRUE);
3345 char *cm_sig = mono_signature_get_full_desc (mono_method_signature (cm), TRUE);
3346 printf ("(IM \"%s\", CM \"%s\")", im_sig, cm_sig);
3347 g_free (im_sig);
3348 g_free (cm_sig);
3349
3350 }
3351
3352 #endif
3353 static gboolean
3354 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) {
3355 MonoMethodSignature *cmsig, *imsig;
3356 if (strcmp (im->name, cm->name) == 0) {
3357 if (! (cm->flags & METHOD_ATTRIBUTE_PUBLIC)) {
3358 TRACE_INTERFACE_VTABLE (printf ("[PUBLIC CHECK FAILED]"));
3359 return FALSE;
3360 }
3361 if (! slot_is_empty) {
3362 if (require_newslot) {
3363 if (! interface_is_explicitly_implemented_by_class) {
3364 TRACE_INTERFACE_VTABLE (printf ("[NOT EXPLICIT IMPLEMENTATION IN FULL SLOT REFUSED]"));
3365 return FALSE;
3366 }
3367 if (! (cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
3368 TRACE_INTERFACE_VTABLE (printf ("[NEWSLOT CHECK FAILED]"));
3369 return FALSE;
3370 }
3371 } else {
3372 TRACE_INTERFACE_VTABLE (printf ("[FULL SLOT REFUSED]"));
3373 }
3374 }
3375 cmsig = mono_method_signature (cm);
3376 imsig = mono_method_signature (im);
3377 if (!cmsig || !imsig) {
3378 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not resolve the signature of a virtual method"));
3379 return FALSE;
3380 }
3381
3382 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3383 TRACE_INTERFACE_VTABLE (printf ("[SIGNATURE CHECK FAILED "));
3384 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3385 TRACE_INTERFACE_VTABLE (printf ("]"));
3386 return FALSE;
3387 }
3388 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS]"));
3389 /* CAS - SecurityAction.InheritanceDemand on interface */
3390 if (security_enabled && (im->flags & METHOD_ATTRIBUTE_HAS_SECURITY)) {
3391 mono_secman_inheritancedemand_method (cm, im);
3392 }
3393
3394 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
3395 mono_security_core_clr_check_override (class, cm, im);
3396 TRACE_INTERFACE_VTABLE (printf ("[NAME CHECK OK]"));
3397 return TRUE;
3398 } else {
3399 MonoClass *ic = im->klass;
3400 const char *ic_name_space = ic->name_space;
3401 const char *ic_name = ic->name;
3402 char *subname;
3403
3404 if (! require_newslot) {
3405 TRACE_INTERFACE_VTABLE (printf ("[INJECTED METHOD REFUSED]"));
3406 return FALSE;
3407 }
3408 if (cm->klass->rank == 0) {
3409 TRACE_INTERFACE_VTABLE (printf ("[RANK CHECK FAILED]"));
3410 return FALSE;
3411 }
3412 if (! mono_metadata_signature_equal (mono_method_signature (cm), mono_method_signature (im))) {
3413 TRACE_INTERFACE_VTABLE (printf ("[(INJECTED) SIGNATURE CHECK FAILED "));
3414 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3415 TRACE_INTERFACE_VTABLE (printf ("]"));
3416 return FALSE;
3417 }
3418 if (mono_class_get_image (ic) != mono_defaults.corlib) {
3419 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE CORLIB CHECK FAILED]"));
3420 return FALSE;
3421 }
3422 if ((ic_name_space == NULL) || (strcmp (ic_name_space, "System.Collections.Generic") != 0)) {
3423 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAMESPACE CHECK FAILED]"));
3424 return FALSE;
3425 }
3426 if ((ic_name == NULL) || ((strcmp (ic_name, "IEnumerable`1") != 0) && (strcmp (ic_name, "ICollection`1") != 0) && (strcmp (ic_name, "IList`1") != 0))) {
3427 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAME CHECK FAILED]"));
3428 return FALSE;
3429 }
3430
3431 subname = strstr (cm->name, ic_name_space);
3432 if (subname != cm->name) {
3433 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL NAMESPACE CHECK FAILED]"));
3434 return FALSE;
3435 }
3436 subname += strlen (ic_name_space);
3437 if (subname [0] != '.') {
3438 TRACE_INTERFACE_VTABLE (printf ("[FIRST DOT CHECK FAILED]"));
3439 return FALSE;
3440 }
3441 subname ++;
3442 if (strstr (subname, ic_name) != subname) {
3443 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL CLASS NAME CHECK FAILED]"));
3444 return FALSE;
3445 }
3446 subname += strlen (ic_name);
3447 if (subname [0] != '.') {
3448 TRACE_INTERFACE_VTABLE (printf ("[SECOND DOT CHECK FAILED]"));
3449 return FALSE;
3450 }
3451 subname ++;
3452 if (strcmp (subname, im->name) != 0) {
3453 TRACE_INTERFACE_VTABLE (printf ("[METHOD NAME CHECK FAILED]"));
3454 return FALSE;
3455 }
3456
3457 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS (INJECTED CASE)]"));
3458 /* CAS - SecurityAction.InheritanceDemand on interface */
3459 if (security_enabled && (im->flags & METHOD_ATTRIBUTE_HAS_SECURITY)) {
3460 mono_secman_inheritancedemand_method (cm, im);
3461 }
3462
3463 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
3464 mono_security_core_clr_check_override (class, cm, im);
3465
3466 TRACE_INTERFACE_VTABLE (printf ("[INJECTED INTERFACE CHECK OK]"));
3467 return TRUE;
3468 }
3469 }
3470
3471 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3472 static void
3473 foreach_override (gpointer key, gpointer value, gpointer user_data) {
3474 MonoMethod *method = key;
3475 MonoMethod *override = value;
3476 MonoClass *method_class = mono_method_get_class (method);
3477 MonoClass *override_class = mono_method_get_class (override);
3478
3479 printf (" Method '%s.%s:%s' has override '%s.%s:%s'\n",
3480 mono_class_get_namespace (method_class), mono_class_get_name (method_class), mono_method_get_name (method),
3481 mono_class_get_namespace (override_class), mono_class_get_name (override_class), mono_method_get_name (override));
3482 }
3483 static void
3484 print_overrides (GHashTable *override_map, const char *message) {
3485 if (override_map) {
3486 printf ("Override map \"%s\" START:\n", message);
3487 g_hash_table_foreach (override_map, foreach_override, NULL);
3488 printf ("Override map \"%s\" END.\n", message);
3489 } else {
3490 printf ("Override map \"%s\" EMPTY.\n", message);
3491 }
3492 }
3493 static void
3494 print_vtable_full (MonoClass *class, MonoMethod** vtable, int size, int first_non_interface_slot, const char *message, gboolean print_interfaces) {
3495 char *full_name = mono_type_full_name (&class->byval_arg);
3496 int i;
3497 int parent_size;
3498
3499 printf ("*** Vtable for class '%s' at \"%s\" (size %d)\n", full_name, message, size);
3500
3501 if (print_interfaces) {
3502 print_implemented_interfaces (class);
3503 printf ("* Interfaces for class '%s' done.\nStarting vtable (size %d):\n", full_name, size);
3504 }
3505
3506 if (class->parent) {
3507 parent_size = class->parent->vtable_size;
3508 } else {
3509 parent_size = 0;
3510 }
3511 for (i = 0; i < size; ++i) {
3512 MonoMethod *cm = vtable [i];
3513 if (cm) {
3514 char *cm_name = mono_method_full_name (cm, TRUE);
3515 char newness = (i < parent_size) ? 'O' : ((i < first_non_interface_slot) ? 'I' : 'N');
3516 printf (" [%c][%03d][INDEX %03d] %s\n", newness, i, cm->slot, cm_name);
3517 g_free (cm_name);
3518 }
3519 }
3520
3521 g_free (full_name);
3522 }
3523 #endif
3524
3525 #if VERIFY_INTERFACE_VTABLE_CODE
3526 static int
3527 mono_method_try_get_vtable_index (MonoMethod *method)
3528 {
3529 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
3530 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
3531 if (imethod->declaring->is_generic)
3532 return imethod->declaring->slot;
3533 }
3534 return method->slot;
3535 }
3536
3537 static void
3538 mono_class_verify_vtable (MonoClass *class)
3539 {
3540 int i;
3541 char *full_name = mono_type_full_name (&class->byval_arg);
3542
3543 printf ("*** Verifying VTable of class '%s' \n", full_name);
3544 g_free (full_name);
3545 full_name = NULL;
3546
3547 if (!class->methods)
3548 return;
3549
3550 for (i = 0; i < class->method.count; ++i) {
3551 MonoMethod *cm = class->methods [i];
3552 int slot;
3553
3554 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
3555 continue;
3556
3557 g_free (full_name);
3558 full_name = mono_method_full_name (cm, TRUE);
3559
3560 slot = mono_method_try_get_vtable_index (cm);
3561 if (slot >= 0) {
3562 if (slot >= class->vtable_size) {
3563 printf ("\tInvalid method %s at index %d with vtable of length %d\n", full_name, slot, class->vtable_size);
3564 continue;
3565 }
3566
3567 if (slot >= 0 && class->vtable [slot] != cm && (class->vtable [slot])) {
3568 char *other_name = class->vtable [slot] ? mono_method_full_name (class->vtable [slot], TRUE) : g_strdup ("[null value]");
3569 printf ("\tMethod %s has slot %d but vtable has %s on it\n", full_name, slot, other_name);
3570 g_free (other_name);
3571 }
3572 } else
3573 printf ("\tVirtual method %s does n't have an assigned slot\n", full_name);
3574 }
3575 g_free (full_name);
3576 }
3577 #endif
3578
3579 static void
3580 print_unimplemented_interface_method_info (MonoClass *class, MonoClass *ic, MonoMethod *im, int im_slot, MonoMethod **overrides, int onum) {
3581 int index;
3582 char *method_signature;
3583 char *type_name;
3584
3585 for (index = 0; index < onum; ++index) {
3586 g_print (" at slot %d: %s (%d) overrides %s (%d)\n", im_slot, overrides [index*2+1]->name,
3587 overrides [index*2+1]->slot, overrides [index*2]->name, overrides [index*2]->slot);
3588 }
3589 method_signature = mono_signature_get_desc (mono_method_signature (im), FALSE);
3590 type_name = mono_type_full_name (&class->byval_arg);
3591 printf ("no implementation for interface method %s::%s(%s) in class %s\n",
3592 mono_type_get_name (&ic->byval_arg), im->name, method_signature, type_name);
3593 g_free (method_signature);
3594 g_free (type_name);
3595 mono_class_setup_methods (class);
3596 if (class->exception_type) {
3597 char *name = mono_type_get_full_name (class);
3598 printf ("CLASS %s failed to resolve methods\n", name);
3599 g_free (name);
3600 return;
3601 }
3602 for (index = 0; index < class->method.count; ++index) {
3603 MonoMethod *cm = class->methods [index];
3604 method_signature = mono_signature_get_desc (mono_method_signature (cm), TRUE);
3605
3606 printf ("METHOD %s(%s)\n", cm->name, method_signature);
3607 g_free (method_signature);
3608 }
3609 }
3610
3611 static gboolean
3612 verify_class_overrides (MonoClass *class, MonoMethod **overrides, int onum)
3613 {
3614 int i;
3615
3616 for (i = 0; i < onum; ++i) {
3617 MonoMethod *decl = overrides [i * 2];
3618 MonoMethod *body = overrides [i * 2 + 1];
3619
3620 if (mono_class_get_generic_type_definition (body->klass) != mono_class_get_generic_type_definition (class)) {
3621 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method belongs to a different class than the declared one"));
3622 return FALSE;
3623 }
3624
3625 if (!(body->flags & METHOD_ATTRIBUTE_VIRTUAL) || (body->flags & METHOD_ATTRIBUTE_STATIC)) {
3626 if (body->flags & METHOD_ATTRIBUTE_STATIC)
3627 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method must not be static to override a base type"));
3628 else
3629 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method must be virtual to override a base type"));
3630 return FALSE;
3631 }
3632
3633 if (!(decl->flags & METHOD_ATTRIBUTE_VIRTUAL) || (decl->flags & METHOD_ATTRIBUTE_STATIC)) {
3634 if (body->flags & METHOD_ATTRIBUTE_STATIC)
3635 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cannot override a static method in a base type"));
3636 else
3637 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cannot override a non virtual method in a base type"));
3638 return FALSE;
3639 }
3640
3641 if (!mono_class_is_assignable_from_slow (decl->klass, class)) {
3642 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method overrides a class or interface that extended or implemented by this type"));
3643 return FALSE;
3644 }
3645 }
3646 return TRUE;
3647 }
3648 /*
3649 * LOCKING: this is supposed to be called with the loader lock held.
3650 */
3651 void
3652 mono_class_setup_vtable_general (MonoClass *class, MonoMethod **overrides, int onum)
3653 {
3654 MonoError error;
3655 MonoClass *k, *ic;
3656 MonoMethod **vtable;
3657 int i, max_vtsize = 0, max_iid, cur_slot = 0;
3658 GPtrArray *ifaces = NULL;
3659 GHashTable *override_map = NULL;
3660 gboolean security_enabled = mono_is_security_manager_active ();
3661 MonoMethod *cm;
3662 gpointer class_iter;
3663 #if (DEBUG_INTERFACE_VTABLE_CODE|TRACE_INTERFACE_VTABLE_CODE)
3664 int first_non_interface_slot;
3665 #endif
3666 GSList *virt_methods = NULL, *l;
3667
3668 if (class->vtable)
3669 return;
3670
3671 if (overrides && !verify_class_overrides (class, overrides, onum))
3672 return;
3673
3674 ifaces = mono_class_get_implemented_interfaces (class, &error);
3675 if (!mono_error_ok (&error)) {
3676 char *name = mono_type_get_full_name (class);
3677 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)));
3678 g_free (name);
3679 mono_error_cleanup (&error);
3680 return;
3681 } else if (ifaces) {
3682 for (i = 0; i < ifaces->len; i++) {
3683 MonoClass *ic = g_ptr_array_index (ifaces, i);
3684 max_vtsize += ic->method.count;
3685 }
3686 g_ptr_array_free (ifaces, TRUE);
3687 ifaces = NULL;
3688 }
3689
3690 if (class->parent) {
3691 mono_class_init (class->parent);
3692 mono_class_setup_vtable (class->parent);
3693
3694 if (class->parent->exception_type) {
3695 char *name = mono_type_get_full_name (class->parent);
3696 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Parent %s failed to load", name));
3697 g_free (name);
3698 return;
3699 }
3700
3701 max_vtsize += class->parent->vtable_size;
3702 cur_slot = class->parent->vtable_size;
3703 }
3704
3705 max_vtsize += class->method.count;
3706
3707 vtable = alloca (sizeof (gpointer) * max_vtsize);
3708 memset (vtable, 0, sizeof (gpointer) * max_vtsize);
3709
3710 /* printf ("METAINIT %s.%s\n", class->name_space, class->name); */
3711
3712 cur_slot = setup_interface_offsets (class, cur_slot);
3713 if (cur_slot == -1) /*setup_interface_offsets fails the type.*/
3714 return;
3715
3716 max_iid = class->max_interface_id;
3717 DEBUG_INTERFACE_VTABLE (first_non_interface_slot = cur_slot);
3718
3719 /* Optimized version for generic instances */
3720 if (class->generic_class) {
3721 MonoClass *gklass = class->generic_class->container_class;
3722 MonoMethod **tmp;
3723
3724 mono_class_setup_vtable (gklass);
3725 if (gklass->exception_type != MONO_EXCEPTION_NONE) {
3726 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
3727 return;
3728 }
3729
3730 tmp = mono_image_alloc0 (class->image, sizeof (gpointer) * gklass->vtable_size);
3731 class->vtable_size = gklass->vtable_size;
3732 for (i = 0; i < gklass->vtable_size; ++i)
3733 if (gklass->vtable [i]) {
3734 tmp [i] = mono_class_inflate_generic_method_full (gklass->vtable [i], class, mono_class_get_context (class));
3735 tmp [i]->slot = gklass->vtable [i]->slot;
3736 }
3737 mono_memory_barrier ();
3738 class->vtable = tmp;
3739
3740 /* Have to set method->slot for abstract virtual methods */
3741 if (class->methods && gklass->methods) {
3742 for (i = 0; i < class->method.count; ++i)
3743 if (class->methods [i]->slot == -1)
3744 class->methods [i]->slot = gklass->methods [i]->slot;
3745 }
3746
3747 return;
3748 }
3749
3750 if (class->parent && class->parent->vtable_size) {
3751 MonoClass *parent = class->parent;
3752 int i;
3753
3754 memcpy (vtable, parent->vtable, sizeof (gpointer) * parent->vtable_size);
3755
3756 // Also inherit parent interface vtables, just as a starting point.
3757 // This is needed otherwise bug-77127.exe fails when the property methods
3758 // have different names in the iterface and the class, because for child
3759 // classes the ".override" information is not used anymore.
3760 for (i = 0; i < parent->interface_offsets_count; i++) {
3761 MonoClass *parent_interface = parent->interfaces_packed [i];
3762 int interface_offset = mono_class_interface_offset (class, parent_interface);
3763 /*FIXME this is now dead code as this condition will never hold true.
3764 Since interface offsets are inherited then the offset of an interface implemented
3765 by a parent will never be the out of it's vtable boundary.
3766 */
3767 if (interface_offset >= parent->vtable_size) {
3768 int parent_interface_offset = mono_class_interface_offset (parent, parent_interface);
3769 int j;
3770
3771 mono_class_setup_methods (parent_interface); /*FIXME Just kill this whole chunk of dead code*/
3772 TRACE_INTERFACE_VTABLE (printf (" +++ Inheriting interface %s.%s\n", parent_interface->name_space, parent_interface->name));
3773 for (j = 0; j < parent_interface->method.count && !class->exception_type; j++) {
3774 vtable [interface_offset + j] = parent->vtable [parent_interface_offset + j];
3775 TRACE_INTERFACE_VTABLE (printf (" --- Inheriting: [%03d][(%03d)+(%03d)] => [%03d][(%03d)+(%03d)]\n",
3776 parent_interface_offset + j, parent_interface_offset, j,
3777 interface_offset + j, interface_offset, j));
3778 }
3779 }
3780
3781 }
3782 }
3783
3784 TRACE_INTERFACE_VTABLE (print_vtable_full (class, vtable, cur_slot, first_non_interface_slot, "AFTER INHERITING PARENT VTABLE", TRUE));
3785 /* override interface methods */
3786 for (i = 0; i < onum; i++) {
3787 MonoMethod *decl = overrides [i*2];
3788 if (MONO_CLASS_IS_INTERFACE (decl->klass)) {
3789 int dslot;
3790 dslot = mono_method_get_vtable_slot (decl);
3791 if (dslot == -1) {
3792 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
3793 return;
3794 }
3795
3796 dslot += mono_class_interface_offset (class, decl->klass);
3797 vtable [dslot] = overrides [i*2 + 1];
3798 vtable [dslot]->slot = dslot;
3799 if (!override_map)
3800 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
3801
3802 g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
3803
3804 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
3805 mono_security_core_clr_check_override (class, vtable [dslot], decl);
3806 }
3807 }
3808 TRACE_INTERFACE_VTABLE (print_overrides (override_map, "AFTER OVERRIDING INTERFACE METHODS"));
3809 TRACE_INTERFACE_VTABLE (print_vtable_full (class, vtable, cur_slot, first_non_interface_slot, "AFTER OVERRIDING INTERFACE METHODS", FALSE));
3810
3811 /*
3812 * Create a list of virtual methods to avoid calling
3813 * mono_class_get_virtual_methods () which is slow because of the metadata
3814 * optimization.
3815 */
3816 {
3817 gpointer iter = NULL;
3818 MonoMethod *cm;
3819
3820 virt_methods = NULL;
3821 while ((cm = mono_class_get_virtual_methods (class, &iter))) {
3822 virt_methods = g_slist_prepend (virt_methods, cm);
3823 }
3824 if (class->exception_type)
3825 goto fail;
3826 }
3827
3828 // Loop on all implemented interfaces...
3829 for (i = 0; i < class->interface_offsets_count; i++) {
3830 MonoClass *parent = class->parent;
3831 int ic_offset;
3832 gboolean interface_is_explicitly_implemented_by_class;
3833 int im_index;
3834
3835 ic = class->interfaces_packed [i];
3836 ic_offset = mono_class_interface_offset (class, ic);
3837
3838 mono_class_setup_methods (ic);
3839 if (ic->exception_type)
3840 goto fail;
3841
3842 // Check if this interface is explicitly implemented (instead of just inherited)
3843 if (parent != NULL) {
3844 int implemented_interfaces_index;
3845 interface_is_explicitly_implemented_by_class = FALSE;
3846 for (implemented_interfaces_index = 0; implemented_interfaces_index < class->interface_count; implemented_interfaces_index++) {
3847 if (ic == class->interfaces [implemented_interfaces_index]) {
3848 interface_is_explicitly_implemented_by_class = TRUE;
3849 break;
3850 }
3851 }
3852 } else {
3853 interface_is_explicitly_implemented_by_class = TRUE;
3854 }
3855
3856 // Loop on all interface methods...
3857 for (im_index = 0; im_index < ic->method.count; im_index++) {
3858 MonoMethod *im = ic->methods [im_index];
3859 int im_slot = ic_offset + im->slot;
3860 MonoMethod *override_im = (override_map != NULL) ? g_hash_table_lookup (override_map, im) : NULL;
3861
3862 if (im->flags & METHOD_ATTRIBUTE_STATIC)
3863 continue;
3864
3865 // If there is an explicit implementation, just use it right away,
3866 // otherwise look for a matching method
3867 if (override_im == NULL) {
3868 int cm_index;
3869 gpointer iter;
3870 MonoMethod *cm;
3871
3872 // First look for a suitable method among the class methods
3873 iter = NULL;
3874 for (l = virt_methods; l; l = l->next) {
3875 cm = l->data;
3876 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)));
3877 if (check_interface_method_override (class, im, cm, TRUE, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL), security_enabled)) {
3878 TRACE_INTERFACE_VTABLE (printf ("[check ok]: ASSIGNING"));
3879 vtable [im_slot] = cm;
3880 /* Why do we need this? */
3881 if (cm->slot < 0) {
3882 cm->slot = im_slot;
3883 }
3884 }
3885 TRACE_INTERFACE_VTABLE (printf ("\n"));
3886 if (class->exception_type) /*Might be set by check_interface_method_override*/
3887 goto fail;
3888 }
3889
3890 // If the slot is still empty, look in all the inherited virtual methods...
3891 if ((vtable [im_slot] == NULL) && class->parent != NULL) {
3892 MonoClass *parent = class->parent;
3893 // Reverse order, so that last added methods are preferred
3894 for (cm_index = parent->vtable_size - 1; cm_index >= 0; cm_index--) {
3895 MonoMethod *cm = parent->vtable [cm_index];
3896
3897 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));
3898 if ((cm != NULL) && check_interface_method_override (class, im, cm, FALSE, FALSE, TRUE, security_enabled)) {
3899 TRACE_INTERFACE_VTABLE (printf ("[everything ok]: ASSIGNING"));
3900 vtable [im_slot] = cm;
3901 /* Why do we need this? */
3902 if (cm->slot < 0) {
3903 cm->slot = im_slot;
3904 }
3905 break;
3906 }
3907 if (class->exception_type) /*Might be set by check_interface_method_override*/
3908 goto fail;
3909 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf ("\n"));
3910 }
3911 }
3912 } else {
3913 g_assert (vtable [im_slot] == override_im);
3914 }
3915 }
3916 }
3917
3918 // If the class is not abstract, check that all its interface slots are full.
3919 // The check is done here and not directly at the end of the loop above because
3920 // it can happen (for injected generic array interfaces) that the same slot is
3921 // processed multiple times (those interfaces have overlapping slots), and it
3922 // will not always be the first pass the one that fills the slot.
3923 if (! (class->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
3924 for (i = 0; i < class->interface_offsets_count; i++) {
3925 int ic_offset;
3926 int im_index;
3927
3928 ic = class->interfaces_packed [i];
3929 ic_offset = mono_class_interface_offset (class, ic);
3930
3931 for (im_index = 0; im_index < ic->method.count; im_index++) {
3932 MonoMethod *im = ic->methods [im_index];
3933 int im_slot = ic_offset + im->slot;
3934
3935 if (im->flags & METHOD_ATTRIBUTE_STATIC)
3936 continue;
3937
3938 TRACE_INTERFACE_VTABLE (printf (" [class is not abstract, checking slot %d for interface '%s'.'%s', method %s, slot check is %d]\n",
3939 im_slot, ic->name_space, ic->name, im->name, (vtable [im_slot] == NULL)));
3940 if (vtable [im_slot] == NULL) {
3941 print_unimplemented_interface_method_info (class, ic, im, im_slot, overrides, onum);
3942 goto fail;
3943 }
3944 }
3945 }
3946 }
3947
3948 TRACE_INTERFACE_VTABLE (print_vtable_full (class, vtable, cur_slot, first_non_interface_slot, "AFTER SETTING UP INTERFACE METHODS", FALSE));
3949 class_iter = NULL;
3950 for (l = virt_methods; l; l = l->next) {
3951 cm = l->data;
3952 /*
3953 * If the method is REUSE_SLOT, we must check in the
3954 * base class for a method to override.
3955 */
3956 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
3957 int slot = -1;
3958 for (k = class->parent; k ; k = k->parent) {
3959 gpointer k_iter;
3960 MonoMethod *m1;
3961
3962 k_iter = NULL;
3963 while ((m1 = mono_class_get_virtual_methods (k, &k_iter))) {
3964 MonoMethodSignature *cmsig, *m1sig;
3965
3966 cmsig = mono_method_signature (cm);
3967 m1sig = mono_method_signature (m1);
3968
3969 if (!cmsig || !m1sig) {
3970 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
3971 return;
3972 }
3973
3974 if (!strcmp(cm->name, m1->name) &&
3975 mono_metadata_signature_equal (cmsig, m1sig)) {
3976
3977 /* CAS - SecurityAction.InheritanceDemand */
3978 if (security_enabled && (m1->flags & METHOD_ATTRIBUTE_HAS_SECURITY)) {
3979 mono_secman_inheritancedemand_method (cm, m1);
3980 }
3981
3982 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
3983 mono_security_core_clr_check_override (class, cm, m1);
3984
3985 slot = mono_method_get_vtable_slot (m1);
3986 if (slot == -1)
3987 goto fail;
3988
3989 g_assert (cm->slot < max_vtsize);
3990 if (!override_map)
3991 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
3992 g_hash_table_insert (override_map, m1, cm);
3993 break;
3994 }
3995 }
3996 if (k->exception_type)
3997 goto fail;
3998
3999 if (slot >= 0)
4000 break;
4001 }
4002 if (slot >= 0)
4003 cm->slot = slot;
4004 }
4005
4006 /*Non final newslot methods must be given a non-interface vtable slot*/
4007 if ((cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && !(cm->flags & METHOD_ATTRIBUTE_FINAL) && cm->slot >= 0)
4008 cm->slot = -1;
4009
4010 if (cm->slot < 0)
4011 cm->slot = cur_slot++;
4012
4013 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT))
4014 vtable [cm->slot] = cm;
4015 }
4016
4017 /* override non interface methods */
4018 for (i = 0; i < onum; i++) {
4019 MonoMethod *decl = overrides [i*2];
4020 if (!MONO_CLASS_IS_INTERFACE (decl->klass)) {
4021 g_assert (decl->slot != -1);
4022 vtable [decl->slot] = overrides [i*2 + 1];
4023 overrides [i * 2 + 1]->slot = decl->slot;
4024 if (!override_map)
4025 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4026 g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
4027
4028 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
4029 mono_security_core_clr_check_override (class, vtable [decl->slot], decl);
4030 }
4031 }
4032
4033 /*
4034 * If a method occupies more than one place in the vtable, and it is
4035 * overriden, then change the other occurances too.
4036 */
4037 if (override_map) {
4038 for (i = 0; i < max_vtsize; ++i)
4039 if (vtable [i]) {
4040 MonoMethod *cm = g_hash_table_lookup (override_map, vtable [i]);
4041 if (cm)
4042 vtable [i] = cm;
4043 }
4044
4045 g_hash_table_destroy (override_map);
4046 override_map = NULL;
4047 }
4048
4049 g_slist_free (virt_methods);
4050 virt_methods = NULL;
4051
4052 /* Ensure that all vtable slots are filled with concrete instance methods */
4053 if (!(class->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4054 for (i = 0; i < cur_slot; ++i) {
4055 if (vtable [i] == NULL || (vtable [i]->flags & (METHOD_ATTRIBUTE_ABSTRACT | METHOD_ATTRIBUTE_STATIC))) {
4056 char *type_name = mono_type_get_full_name (class);
4057 char *method_name = vtable [i] ? mono_method_full_name (vtable [i], TRUE) : g_strdup ("none");
4058 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));
4059 g_free (type_name);
4060 g_free (method_name);
4061 return;
4062 }
4063 }
4064 }
4065
4066 if (class->generic_class) {
4067 MonoClass *gklass = class->generic_class->container_class;
4068
4069 mono_class_init (gklass);
4070
4071 class->vtable_size = MAX (gklass->vtable_size, cur_slot);
4072 } else {
4073 /* Check that the vtable_size value computed in mono_class_init () is correct */
4074 if (class->vtable_size)
4075 g_assert (cur_slot == class->vtable_size);
4076 class->vtable_size = cur_slot;
4077 }
4078
4079 /* Try to share the vtable with our parent. */
4080 if (class->parent && (class->parent->vtable_size == class->vtable_size) && (memcmp (class->parent->vtable, vtable, sizeof (gpointer) * class->vtable_size) == 0)) {
4081 mono_memory_barrier ();
4082 class->vtable = class->parent->vtable;
4083 } else {
4084 MonoMethod **tmp = mono_image_alloc0 (class->image, sizeof (gpointer) * class->vtable_size);
4085 memcpy (tmp, vtable, sizeof (gpointer) * class->vtable_size);
4086 mono_memory_barrier ();
4087 class->vtable = tmp;
4088 }
4089
4090 DEBUG_INTERFACE_VTABLE (print_vtable_full (class, class->vtable, class->vtable_size, first_non_interface_slot, "FINALLY", FALSE));
4091 if (mono_print_vtable) {
4092 int icount = 0;
4093
4094 print_implemented_interfaces (class);
4095
4096 for (i = 0; i <= max_iid; i++)
4097 if (MONO_CLASS_IMPLEMENTS_INTERFACE (class, i))
4098 icount++;
4099
4100 printf ("VTable %s (vtable entries = %d, interfaces = %d)\n", mono_type_full_name (&class->byval_arg),
4101 class->vtable_size, icount);
4102
4103 for (i = 0; i < cur_slot; ++i) {
4104 MonoMethod *cm;
4105
4106 cm = vtable [i];
4107 if (cm) {
4108 printf (" slot assigned: %03d, slot index: %03d %s\n", i, cm->slot,
4109 mono_method_full_name (cm, TRUE));
4110 }
4111 }
4112
4113
4114 if (icount) {
4115 printf ("Interfaces %s.%s (max_iid = %d)\n", class->name_space,
4116 class->name, max_iid);
4117
4118 for (i = 0; i < class->interface_count; i++) {
4119 ic = class->interfaces [i];
4120 printf (" slot offset: %03d, method count: %03d, iid: %03d %s\n",
4121 mono_class_interface_offset (class, ic),
4122 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4123 }
4124
4125 for (k = class->parent; k ; k = k->parent) {
4126 for (i = 0; i < k->interface_count; i++) {
4127 ic = k->interfaces [i];
4128 printf (" parent slot offset: %03d, method count: %03d, iid: %03d %s\n",
4129 mono_class_interface_offset (class, ic),
4130 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4131 }
4132 }
4133 }
4134 }
4135
4136 VERIFY_INTERFACE_VTABLE (mono_class_verify_vtable (class));
4137 return;
4138
4139 fail:
4140 {
4141 char *name = mono_type_get_full_name (class);
4142 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("VTable setup of type %s failed", name));
4143 g_free (name);
4144 if (override_map)
4145 g_hash_table_destroy (override_map);
4146 if (virt_methods)
4147 g_slist_free (virt_methods);
4148 }
4149 }
4150
4151 /*
4152 * mono_method_get_vtable_slot:
4153 *
4154 * Returns method->slot, computing it if neccesary. Return -1 on failure.
4155 * LOCKING: Acquires the loader lock.
4156 *
4157 * FIXME Use proper MonoError machinery here.
4158 */
4159 int
4160 mono_method_get_vtable_slot (MonoMethod *method)
4161 {
4162 if (method->slot == -1) {
4163 mono_class_setup_vtable (method->klass);
4164 if (method->klass->exception_type)
4165 return -1;
4166 g_assert (method->slot != -1);
4167 }
4168 return method->slot;
4169 }
4170
4171 /**
4172 * mono_method_get_vtable_index:
4173 * @method: a method
4174 *
4175 * Returns the index into the runtime vtable to access the method or,
4176 * in the case of a virtual generic method, the virtual generic method
4177 * thunk. Returns -1 on failure.
4178 *
4179 * FIXME Use proper MonoError machinery here.
4180 */
4181 int
4182 mono_method_get_vtable_index (MonoMethod *method)
4183 {
4184 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4185 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4186 if (imethod->declaring->is_generic)
4187 return mono_method_get_vtable_slot (imethod->declaring);
4188 }
4189 return mono_method_get_vtable_slot (method);
4190 }
4191
4192 static MonoMethod *default_ghc = NULL;
4193 static MonoMethod *default_finalize = NULL;
4194 static int finalize_slot = -1;
4195 static int ghc_slot = -1;
4196
4197 static void
4198 initialize_object_slots (MonoClass *class)
4199 {
4200 int i;
4201 if (default_ghc)
4202 return;
4203 if (class == mono_defaults.object_class) {
4204 mono_class_setup_vtable (class);
4205 for (i = 0; i < class->vtable_size; ++i) {
4206 MonoMethod *cm = class->vtable [i];
4207
4208 if (!strcmp (cm->name, "GetHashCode"))
4209 ghc_slot = i;
4210 else if (!strcmp (cm->name, "Finalize"))
4211 finalize_slot = i;
4212 }
4213
4214 g_assert (ghc_slot > 0);
4215 default_ghc = class->vtable [ghc_slot];
4216
4217 g_assert (finalize_slot > 0);
4218 default_finalize = class->vtable [finalize_slot];
4219 }
4220 }
4221
4222 typedef struct {
4223 MonoMethod *array_method;
4224 char *name;
4225 } GenericArrayMethodInfo;
4226
4227 static int generic_array_method_num = 0;
4228 static GenericArrayMethodInfo *generic_array_method_info = NULL;
4229
4230 static int
4231 generic_array_methods (MonoClass *class)
4232 {
4233 int i, count_generic = 0;
4234 GList *list = NULL, *tmp;
4235 if (generic_array_method_num)
4236 return generic_array_method_num;
4237 mono_class_setup_methods (class->parent); /*This is setting up System.Array*/
4238 g_assert (!class->parent->exception_type); /*So hitting this assert is a huge problem*/
4239 for (i = 0; i < class->parent->method.count; i++) {
4240 MonoMethod *m = class->parent->methods [i];
4241 if (!strncmp (m->name, "InternalArray__", 15)) {
4242 count_generic++;
4243 list = g_list_prepend (list, m);
4244 }
4245 }
4246 list = g_list_reverse (list);
4247 generic_array_method_info = g_malloc (sizeof (GenericArrayMethodInfo) * count_generic);
4248 i = 0;
4249 for (tmp = list; tmp; tmp = tmp->next) {
4250 const char *mname, *iname;
4251 gchar *name;
4252 MonoMethod *m = tmp->data;
4253 generic_array_method_info [i].array_method = m;
4254 if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
4255 iname = "System.Collections.Generic.ICollection`1.";
4256 mname = m->name + 27;
4257 } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
4258 iname = "System.Collections.Generic.IEnumerable`1.";
4259 mname = m->name + 27;
4260 } else if (!strncmp (m->name, "InternalArray__", 15)) {
4261 iname = "System.Collections.Generic.IList`1.";
4262 mname = m->name + 15;
4263 } else {
4264 g_assert_not_reached ();
4265 }
4266
4267 name = mono_image_alloc (mono_defaults.corlib, strlen (iname) + strlen (mname) + 1);
4268 strcpy (name, iname);
4269 strcpy (name + strlen (iname), mname);
4270 generic_array_method_info [i].name = name;
4271 i++;
4272 }
4273 /*g_print ("array generic methods: %d\n", count_generic);*/
4274
4275 generic_array_method_num = count_generic;
4276 g_list_free (list);
4277 return generic_array_method_num;
4278 }
4279
4280 static void
4281 setup_generic_array_ifaces (MonoClass *class, MonoClass *iface, MonoMethod **methods, int pos)
4282 {
4283 MonoGenericContext tmp_context;
4284 int i;
4285
4286 tmp_context.class_inst = NULL;
4287 tmp_context.method_inst = iface->generic_class->context.class_inst;
4288 //g_print ("setting up array interface: %s\n", mono_type_get_name_full (&iface->byval_arg, 0));
4289
4290 for (i = 0; i < generic_array_method_num; i++) {
4291 MonoMethod *m = generic_array_method_info [i].array_method;
4292 MonoMethod *inflated;
4293
4294 inflated = mono_class_inflate_generic_method (m, &tmp_context);
4295 methods [pos++] = mono_marshal_get_generic_array_helper (class, iface, generic_array_method_info [i].name, inflated);
4296 }
4297 }
4298
4299 static char*
4300 concat_two_strings_with_zero (MonoImage *image, const char *s1, const char *s2)
4301 {
4302 int len = strlen (s1) + strlen (s2) + 2;
4303 char *s = mono_image_alloc (image, len);
4304 int result;
4305
4306 result = g_snprintf (s, len, "%s%c%s", s1, '\0', s2);
4307 g_assert (result == len - 1);
4308
4309 return s;
4310 }
4311
4312 static void
4313 set_failure_from_loader_error (MonoClass *class, MonoLoaderError *error)
4314 {
4315 gpointer exception_data = NULL;
4316
4317 switch (error->exception_type) {
4318 case MONO_EXCEPTION_TYPE_LOAD:
4319 exception_data = concat_two_strings_with_zero (class->image, error->class_name, error->assembly_name);
4320 break;
4321
4322 case MONO_EXCEPTION_MISSING_METHOD:
4323 exception_data = concat_two_strings_with_zero (class->image, error->class_name, error->member_name);
4324 break;
4325
4326 case MONO_EXCEPTION_MISSING_FIELD: {
4327 const char *name_space = error->klass->name_space ? error->klass->name_space : NULL;
4328 const char *class_name;
4329
4330 if (name_space)
4331 class_name = g_strdup_printf ("%s.%s", name_space, error->klass->name);
4332 else
4333 class_name = error->klass->name;
4334
4335 exception_data = concat_two_strings_with_zero (class->image, class_name, error->member_name);
4336
4337 if (name_space)
4338 g_free ((void*)class_name);
4339 break;
4340 }
4341
4342 case MONO_EXCEPTION_FILE_NOT_FOUND: {
4343 const char *msg;
4344
4345 if (error->ref_only)
4346 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.";
4347 else
4348 msg = "Could not load file or assembly '%s' or one of its dependencies.";
4349
4350 exception_data = concat_two_strings_with_zero (class->image, msg, error->assembly_name);
4351 break;
4352 }
4353
4354 case MONO_EXCEPTION_BAD_IMAGE:
4355 exception_data = error->msg;
4356 break;
4357
4358 default :
4359 g_assert_not_reached ();
4360 }
4361
4362 mono_class_set_failure (class, error->exception_type, exception_data);
4363 }
4364
4365 /**
4366 * mono_class_init:
4367 * @class: the class to initialize
4368 *
4369 * Compute the instance_size, class_size and other infos that cannot be
4370 * computed at mono_class_get() time. Also compute vtable_size if possible.
4371 * Returns TRUE on success or FALSE if there was a problem in loading
4372 * the type (incorrect assemblies, missing assemblies, methods, etc).
4373 *
4374 * LOCKING: Acquires the loader lock.
4375 */
4376 gboolean
4377 mono_class_init (MonoClass *class)
4378 {
4379 int i;
4380 MonoCachedClassInfo cached_info;
4381 gboolean has_cached_info;
4382
4383 g_assert (class);
4384
4385 /* Double-checking locking pattern */
4386 if (class->inited)
4387 return class->exception_type == MONO_EXCEPTION_NONE;
4388
4389 /*g_print ("Init class %s\n", class->name);*/
4390
4391 /* We do everything inside the lock to prevent races */
4392 mono_loader_lock ();
4393
4394 if (class->inited) {
4395 mono_loader_unlock ();
4396 /* Somebody might have gotten in before us */
4397 return class->exception_type == MONO_EXCEPTION_NONE;
4398 }
4399
4400 if (class->init_pending) {
4401 mono_loader_unlock ();
4402 /* this indicates a cyclic dependency */
4403 g_error ("pending init %s.%s\n", class->name_space, class->name);
4404 }
4405
4406 class->init_pending = 1;
4407
4408 if (mono_verifier_is_enabled_for_class (class) && !mono_verifier_verify_class (class)) {
4409 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, concat_two_strings_with_zero (class->image, class->name, class->image->assembly_name));
4410 goto leave;
4411 }
4412
4413
4414 if (class->byval_arg.type == MONO_TYPE_ARRAY || class->byval_arg.type == MONO_TYPE_SZARRAY) {
4415 MonoClass *element_class = class->element_class;
4416 if (!element_class->inited)
4417 mono_class_init (element_class);
4418 if (element_class->exception_type != MONO_EXCEPTION_NONE) {
4419 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4420 goto leave;
4421 }
4422 }
4423
4424 /* CAS - SecurityAction.InheritanceDemand */
4425 if (mono_is_security_manager_active () && class->parent && (class->parent->flags & TYPE_ATTRIBUTE_HAS_SECURITY)) {
4426 mono_secman_inheritancedemand_class (class, class->parent);
4427 }
4428
4429 mono_stats.initialized_class_count++;
4430
4431 if (class->generic_class && !class->generic_class->is_dynamic) {
4432 MonoClass *gklass = class->generic_class->container_class;
4433
4434 mono_stats.generic_class_count++;
4435
4436 class->method = gklass->method;
4437 class->field = gklass->field;
4438
4439 mono_class_init (gklass);
4440 // FIXME: Why is this needed ?
4441 if (!gklass->exception_type)
4442 mono_class_setup_methods (gklass);
4443 if (gklass->exception_type) {
4444 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Generic Type Defintion failed to init"));
4445 goto leave;
4446 }
4447
4448 if (MONO_CLASS_IS_INTERFACE (class))
4449 class->interface_id = mono_get_unique_iid (class);
4450 }
4451
4452 if (class->parent && !class->parent->inited)
4453 mono_class_init (class->parent);
4454
4455 has_cached_info = mono_class_get_cached_class_info (class, &cached_info);
4456
4457 if (class->generic_class || class->image->dynamic || !class->type_token || (has_cached_info && !cached_info.has_nested_classes))
4458 class->nested_classes_inited = TRUE;
4459
4460 /*
4461 * Computes the size used by the fields, and their locations
4462 */
4463 if (has_cached_info) {
4464 class->instance_size = cached_info.instance_size;
4465 class->sizes.class_size = cached_info.class_size;
4466 class->packing_size = cached_info.packing_size;
4467 class->min_align = cached_info.min_align;
4468 class->blittable = cached_info.blittable;
4469 class->has_references = cached_info.has_references;
4470 class->has_static_refs = cached_info.has_static_refs;
4471 class->no_special_static_fields = cached_info.no_special_static_fields;
4472 }
4473 else
4474 if (!class->size_inited){
4475 mono_class_setup_fields (class);
4476 if (class->exception_type || mono_loader_get_last_error ())
4477 goto leave;
4478 }
4479
4480 /* Initialize arrays */
4481 if (class->rank) {
4482 class->method.count = 3 + (class->rank > 1? 2: 1);
4483
4484 if (class->interface_count) {
4485 int count_generic = generic_array_methods (class);
4486 class->method.count += class->interface_count * count_generic;
4487 }
4488 }
4489
4490 mono_class_setup_supertypes (class);
4491
4492 if (!default_ghc)
4493 initialize_object_slots (class);
4494
4495 /*
4496 * Initialize the rest of the data without creating a generic vtable if possible.
4497 * If possible, also compute vtable_size, so mono_class_create_runtime_vtable () can
4498 * also avoid computing a generic vtable.
4499 */
4500 if (has_cached_info) {
4501 /* AOT case */
4502 class->vtable_size = cached_info.vtable_size;
4503 class->has_finalize = cached_info.has_finalize;
4504 class->ghcimpl = cached_info.ghcimpl;
4505 class->has_cctor = cached_info.has_cctor;
4506 } else if (class->rank == 1 && class->byval_arg.type == MONO_TYPE_SZARRAY) {
4507 static int szarray_vtable_size = 0;
4508
4509 /* SZARRAY case */
4510 if (!szarray_vtable_size) {
4511 mono_class_setup_vtable (class);
4512 szarray_vtable_size = class->vtable_size;
4513 } else {
4514 class->vtable_size = szarray_vtable_size;
4515 }
4516 } else if (class->generic_class && !MONO_CLASS_IS_INTERFACE (class)) {
4517 MonoClass *gklass = class->generic_class->container_class;
4518
4519 /* Generic instance case */
4520 class->ghcimpl = gklass->ghcimpl;
4521 class->has_finalize = gklass->has_finalize;
4522 class->has_cctor = gklass->has_cctor;
4523
4524 mono_class_setup_vtable (gklass);
4525 if (gklass->exception_type) {
4526 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4527 goto leave;
4528 }
4529
4530 class->vtable_size = gklass->vtable_size;
4531 } else {
4532 /* General case */
4533
4534 /* ghcimpl is not currently used
4535 class->ghcimpl = 1;
4536 if (class->parent) {
4537 MonoMethod *cmethod = class->vtable [ghc_slot];
4538 if (cmethod->is_inflated)
4539 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
4540 if (cmethod == default_ghc) {
4541 class->ghcimpl = 0;
4542 }
4543 }
4544 */
4545
4546 /* Interfaces and valuetypes are not supposed to have finalizers */
4547 if (!(MONO_CLASS_IS_INTERFACE (class) || class->valuetype)) {
4548 MonoMethod *cmethod = NULL;
4549
4550 if (class->parent && class->parent->has_finalize) {
4551 class->has_finalize = 1;
4552 } else {
4553 if (class->type_token) {
4554 cmethod = find_method_in_metadata (class, "Finalize", 0, METHOD_ATTRIBUTE_VIRTUAL);
4555 } else if (class->parent) {
4556 /* FIXME: Optimize this */
4557 mono_class_setup_vtable (class);
4558 if (class->exception_type || mono_loader_get_last_error ())
4559 goto leave;
4560 cmethod = class->vtable [finalize_slot];
4561 }
4562
4563 if (cmethod) {
4564 /* Check that this is really the finalizer method */
4565 mono_class_setup_vtable (class);
4566 if (class->exception_type || mono_loader_get_last_error ())
4567 goto leave;
4568
4569 g_assert (class->vtable_size > finalize_slot);
4570
4571 class->has_finalize = 0;
4572 if (class->parent) {
4573 cmethod = class->vtable [finalize_slot];
4574 g_assert (cmethod);
4575 if (cmethod->is_inflated)
4576 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
4577 if (cmethod != default_finalize) {
4578 class->has_finalize = 1;
4579 }
4580 }
4581 }
4582 }
4583 }
4584
4585 /* C# doesn't allow interfaces to have cctors */
4586 if (!MONO_CLASS_IS_INTERFACE (class) || class->image != mono_defaults.corlib) {
4587 MonoMethod *cmethod = NULL;
4588
4589 if (class->type_token) {
4590 cmethod = find_method_in_metadata (class, ".cctor", 0, METHOD_ATTRIBUTE_SPECIAL_NAME);
4591 /* The find_method function ignores the 'flags' argument */
4592 if (cmethod && (cmethod->flags & METHOD_ATTRIBUTE_SPECIAL_NAME))
4593 class->has_cctor = 1;
4594 } else {
4595 mono_class_setup_methods (class);
4596 if (class->exception_type)
4597 goto leave;
4598
4599 for (i = 0; i < class->method.count; ++i) {
4600 MonoMethod *method = class->methods [i];
4601 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
4602 (strcmp (".cctor", method->name) == 0)) {
4603 class->has_cctor = 1;
4604 break;
4605 }
4606 }
4607 }
4608 }
4609 }
4610
4611 if (class->parent) {
4612 /* This will compute class->parent->vtable_size for some classes */
4613 mono_class_init (class->parent);
4614 if (class->parent->exception_type) {
4615 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4616 goto leave;
4617 }
4618 if (mono_loader_get_last_error ())
4619 goto leave;
4620 if (!class->parent->vtable_size) {
4621 /* FIXME: Get rid of this somehow */
4622 mono_class_setup_vtable (class->parent);
4623 if (class->parent->exception_type) {
4624 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4625 goto leave;
4626 }
4627 if (mono_loader_get_last_error ())
4628 goto leave;
4629 }
4630 setup_interface_offsets (class, class->parent->vtable_size);
4631 } else {
4632 setup_interface_offsets (class, 0);
4633 }
4634
4635 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
4636 mono_security_core_clr_check_inheritance (class);
4637
4638 if (mono_loader_get_last_error ()) {
4639 if (class->exception_type == MONO_EXCEPTION_NONE) {
4640 set_failure_from_loader_error (class, mono_loader_get_last_error ());
4641 }
4642 mono_loader_clear_error ();
4643 }
4644
4645 goto leave;
4646
4647 leave:
4648 /* Because of the double-checking locking pattern */
4649 mono_memory_barrier ();
4650 class->inited = 1;
4651 class->init_pending = 0;
4652
4653 mono_loader_unlock ();
4654
4655 if (mono_debugger_class_init_func)
4656 mono_debugger_class_init_func (class);
4657
4658 return class->exception_type == MONO_EXCEPTION_NONE;
4659 }
4660
4661 static gboolean
4662 is_corlib_image (MonoImage *image)
4663 {
4664 /* FIXME: allow the dynamic case for our compilers and with full trust */
4665 if (image->dynamic)
4666 return image->assembly && !strcmp (image->assembly->aname.name, "mscorlib");
4667 else
4668 return image == mono_defaults.corlib;
4669 }
4670
4671 /*
4672 * LOCKING: this assumes the loader lock is held
4673 */
4674 void
4675 mono_class_setup_mono_type (MonoClass *class)
4676 {
4677 const char *name = class->name;
4678 const char *nspace = class->name_space;
4679 gboolean is_corlib = is_corlib_image (class->image);
4680
4681 class->this_arg.byref = 1;
4682 class->this_arg.data.klass = class;
4683 class->this_arg.type = MONO_TYPE_CLASS;
4684 class->byval_arg.data.klass = class;
4685 class->byval_arg.type = MONO_TYPE_CLASS;
4686
4687 if (is_corlib && !strcmp (nspace, "System")) {
4688 if (!strcmp (name, "ValueType")) {
4689 /*
4690 * do not set the valuetype bit for System.ValueType.
4691 * class->valuetype = 1;
4692 */
4693 class->blittable = TRUE;
4694 } else if (!strcmp (name, "Enum")) {
4695 /*
4696 * do not set the valuetype bit for System.Enum.
4697 * class->valuetype = 1;
4698 */
4699 class->valuetype = 0;
4700 class->enumtype = 0;
4701 } else if (!strcmp (name, "Object")) {
4702 class->this_arg.type = class->byval_arg.type = MONO_TYPE_OBJECT;
4703 } else if (!strcmp (name, "String")) {
4704 class->this_arg.type = class->byval_arg.type = MONO_TYPE_STRING;
4705 } else if (!strcmp (name, "TypedReference")) {
4706 class->this_arg.type = class->byval_arg.type = MONO_TYPE_TYPEDBYREF;
4707 }
4708 }
4709
4710 if (class->valuetype) {
4711 int t = MONO_TYPE_VALUETYPE;
4712
4713 if (is_corlib && !strcmp (nspace, "System")) {
4714 switch (*name) {
4715 case 'B':
4716 if (!strcmp (name, "Boolean")) {
4717 t = MONO_TYPE_BOOLEAN;
4718 } else if (!strcmp(name, "Byte")) {
4719 t = MONO_TYPE_U1;
4720 class->blittable = TRUE;
4721 }
4722 break;
4723 case 'C':
4724 if (!strcmp (name, "Char")) {
4725 t = MONO_TYPE_CHAR;
4726 }
4727 break;
4728 case 'D':
4729 if (!strcmp (name, "Double")) {
4730 t = MONO_TYPE_R8;
4731 class->blittable = TRUE;
4732 }
4733 break;
4734 case 'I':
4735 if (!strcmp (name, "Int32")) {
4736 t = MONO_TYPE_I4;
4737 class->blittable = TRUE;
4738 } else if (!strcmp(name, "Int16")) {
4739 t = MONO_TYPE_I2;
4740 class->blittable = TRUE;
4741 } else if (!strcmp(name, "Int64")) {
4742 t = MONO_TYPE_I8;
4743 class->blittable = TRUE;
4744 } else if (!strcmp(name, "IntPtr")) {
4745 t = MONO_TYPE_I;
4746 class->blittable = TRUE;
4747 }
4748 break;
4749 case 'S':
4750 if (!strcmp (name, "Single")) {
4751 t = MONO_TYPE_R4;
4752 class->blittable = TRUE;
4753 } else if (!strcmp(name, "SByte")) {
4754 t = MONO_TYPE_I1;
4755 class->blittable = TRUE;
4756 }
4757 break;
4758 case 'U':
4759 if (!strcmp (name, "UInt32")) {
4760 t = MONO_TYPE_U4;
4761 class->blittable = TRUE;
4762 } else if (!strcmp(name, "UInt16")) {
4763 t = MONO_TYPE_U2;
4764 class->blittable = TRUE;
4765 } else if (!strcmp(name, "UInt64")) {
4766 t = MONO_TYPE_U8;
4767 class->blittable = TRUE;
4768 } else if (!strcmp(name, "UIntPtr")) {
4769 t = MONO_TYPE_U;
4770 class->blittable = TRUE;
4771 }
4772 break;
4773 case 'T':
4774 if (!strcmp (name, "TypedReference")) {
4775 t = MONO_TYPE_TYPEDBYREF;
4776 class->blittable = TRUE;
4777 }
4778 break;
4779 case 'V':
4780 if (!strcmp (name, "Void")) {
4781 t = MONO_TYPE_VOID;
4782 }
4783 break;
4784 default:
4785 break;
4786 }
4787 }
4788 class->this_arg.type = class->byval_arg.type = t;
4789 }
4790
4791 if (MONO_CLASS_IS_INTERFACE (class))
4792 class->interface_id = mono_get_unique_iid (class);
4793
4794 }
4795
4796 /*
4797 * COM initialization (using mono_init_com_types) is delayed until needed.
4798 * However when a [ComImport] attribute is present on a type it will trigger
4799 * the initialization. This is not a problem unless the BCL being executed
4800 * lacks the types that COM depends on (e.g. Variant on Silverlight).
4801 */
4802 static void
4803 init_com_from_comimport (MonoClass *class)
4804 {
4805 /* we don't always allow COM initialization under the CoreCLR (e.g. Moonlight does not require it) */
4806 if ((mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)) {
4807 /* but some other CoreCLR user could requires it for their platform (i.e. trusted) code */
4808 if (!mono_security_core_clr_determine_platform_image (class->image)) {
4809 /* but it can not be made available for application (i.e. user code) since all COM calls
4810 * are considered native calls. In this case we fail with a TypeLoadException (just like
4811 * Silverlight 2 does */
4812 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4813 return;
4814 }
4815 }
4816 /* FIXME : we should add an extra checks to ensure COM can be initialized properly before continuing */
4817 mono_init_com_types ();
4818 }
4819
4820 /*
4821 * LOCKING: this assumes the loader lock is held
4822 */
4823 void
4824 mono_class_setup_parent (MonoClass *class, MonoClass *parent)
4825 {
4826 gboolean system_namespace;
4827 gboolean is_corlib = is_corlib_image (class->image);
4828
4829 system_namespace = !strcmp (class->name_space, "System") && is_corlib;
4830
4831 /* if root of the hierarchy */
4832 if (system_namespace && !strcmp (class->name, "Object")) {
4833 class->parent = NULL;
4834 class->instance_size = sizeof (MonoObject);
4835 return;
4836 }
4837 if (!strcmp (class->name, "<Module>")) {
4838 class->parent = NULL;
4839 class->instance_size = 0;
4840 return;
4841 }
4842
4843 if (!MONO_CLASS_IS_INTERFACE (class)) {
4844 /* Imported COM Objects always derive from __ComObject. */
4845 if (MONO_CLASS_IS_IMPORT (class)) {
4846 init_com_from_comimport (class);
4847 if (parent == mono_defaults.object_class)
4848 parent = mono_defaults.com_object_class;
4849 }
4850 if (!parent) {
4851 /* set the parent to something useful and safe, but mark the type as broken */
4852 parent = mono_defaults.object_class;
4853 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
4854 }
4855
4856 class->parent = parent;
4857
4858 if (parent->generic_class && !parent->name) {
4859 /*
4860 * If the parent is a generic instance, we may get
4861 * called before it is fully initialized, especially
4862 * before it has its name.
4863 */
4864 return;
4865 }
4866
4867 class->marshalbyref = parent->marshalbyref;
4868 class->contextbound = parent->contextbound;
4869 class->delegate = parent->delegate;
4870 if (MONO_CLASS_IS_IMPORT (class))
4871 class->is_com_object = 1;
4872 else
4873 class->is_com_object = parent->is_com_object;
4874
4875 if (system_namespace) {
4876 if (*class->name == 'M' && !strcmp (class->name, "MarshalByRefObject"))
4877 class->marshalbyref = 1;
4878
4879 if (*class->name == 'C' && !strcmp (class->name, "ContextBoundObject"))
4880 class->contextbound = 1;
4881
4882 if (*class->name == 'D' && !strcmp (class->name, "Delegate"))
4883 class->delegate = 1;
4884 }
4885
4886 if (class->parent->enumtype || (is_corlib_image (class->parent->image) && (strcmp (class->parent->name, "ValueType") == 0) &&
4887 (strcmp (class->parent->name_space, "System") == 0)))
4888 class->valuetype = 1;
4889 if (is_corlib_image (class->parent->image) && ((strcmp (class->parent->name, "Enum") == 0) && (strcmp (class->parent->name_space, "System") == 0))) {
4890 class->valuetype = class->enumtype = 1;
4891 }
4892 /*class->enumtype = class->parent->enumtype; */
4893 mono_class_setup_supertypes (class);
4894 } else {
4895 /* initialize com types if COM interfaces are present */
4896 if (MONO_CLASS_IS_IMPORT (class))
4897 init_com_from_comimport (class);
4898 class->parent = NULL;
4899 }
4900
4901 }
4902
4903 /*
4904 * mono_class_setup_supertypes:
4905 * @class: a class
4906 *
4907 * Build the data structure needed to make fast type checks work.
4908 * This currently sets two fields in @class:
4909 * - idepth: distance between @class and System.Object in the type
4910 * hierarchy + 1
4911 * - supertypes: array of classes: each element has a class in the hierarchy
4912 * starting from @class up to System.Object
4913 *
4914 * LOCKING: this assumes the loader lock is held
4915 */
4916 void
4917 mono_class_setup_supertypes (MonoClass *class)
4918 {
4919 int ms;
4920
4921 if (class->supertypes)
4922 return;
4923
4924 if (class->parent && !class->parent->supertypes)
4925 mono_class_setup_supertypes (class->parent);
4926 if (class->parent)
4927 class->idepth = class->parent->idepth + 1;
4928 else
4929 class->idepth = 1;
4930
4931 ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, class->idepth);
4932 class->supertypes = mono_image_alloc0 (class->image, sizeof (MonoClass *) * ms);
4933
4934 if (class->parent) {
4935 class->supertypes [class->idepth - 1] = class;
4936 memcpy (class->supertypes, class->parent->supertypes, class->parent->idepth * sizeof (gpointer));
4937 } else {
4938 class->supertypes [0] = class;
4939 }
4940 }
4941
4942 /**
4943 * mono_class_create_from_typedef:
4944 * @image: image where the token is valid
4945 * @type_token: typedef token
4946 *
4947 * Create the MonoClass* representing the specified type token.
4948 * @type_token must be a TypeDef token.
4949 */
4950 static MonoClass *
4951 mono_class_create_from_typedef (MonoImage *image, guint32 type_token)
4952 {
4953 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
4954 MonoClass *class, *parent = NULL;
4955 guint32 cols [MONO_TYPEDEF_SIZE];
4956 guint32 cols_next [MONO_TYPEDEF_SIZE];
4957 guint tidx = mono_metadata_token_index (type_token);
4958 MonoGenericContext *context = NULL;
4959 const char *name, *nspace;
4960 guint icount = 0;
4961 MonoClass **interfaces;
4962 guint32 field_last, method_last;
4963 guint32 nesting_tokeen;
4964
4965 if (mono_metadata_token_table (type_token) != MONO_TABLE_TYPEDEF || tidx > tt->rows)
4966 return NULL;
4967
4968 mono_loader_lock ();
4969
4970 if ((class = mono_internal_hash_table_lookup (&image->class_cache, GUINT_TO_POINTER (type_token)))) {
4971 mono_loader_unlock ();
4972 return class;
4973 }
4974
4975 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
4976
4977 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
4978 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
4979
4980 class = mono_image_alloc0 (image, sizeof (MonoClass));
4981
4982 class->name = name;
4983 class->name_space = nspace;
4984
4985 mono_profiler_class_event (class, MONO_PROFILE_START_LOAD);
4986
4987 class->image = image;
4988 class->type_token = type_token;
4989 class->flags = cols [MONO_TYPEDEF_FLAGS];
4990
4991 mono_internal_hash_table_insert (&image->class_cache, GUINT_TO_POINTER (type_token), class);
4992
4993 classes_size += sizeof (MonoClass);
4994
4995 /*
4996 * Check whether we're a generic type definition.
4997 */
4998 class->generic_container = mono_metadata_load_generic_params (image, class->type_token, NULL);
4999 if (class->generic_container) {
5000 class->is_generic = 1;
5001 class->generic_container->owner.klass = class;
5002 context = &class->generic_container->context;
5003 }
5004
5005 if (cols [MONO_TYPEDEF_EXTENDS]) {
5006 guint32 parent_token = mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]);
5007
5008 if (mono_metadata_token_table (parent_token) == MONO_TABLE_TYPESPEC) {
5009 /*WARNING: this must satisfy mono_metadata_type_hash*/
5010 class->this_arg.byref = 1;
5011 class->this_arg.data.klass = class;
5012 class->this_arg.type = MONO_TYPE_CLASS;
5013 class->byval_arg.data.klass = class;
5014 class->byval_arg.type = MONO_TYPE_CLASS;
5015 }
5016 parent = mono_class_get_full (image, parent_token, context);
5017
5018 if (parent == NULL){
5019 mono_internal_hash_table_remove (&image->class_cache, GUINT_TO_POINTER (type_token));
5020 mono_loader_unlock ();
5021 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5022 return NULL;
5023 }
5024 }
5025
5026 /* do this early so it's available for interfaces in setup_mono_type () */
5027 if ((nesting_tokeen = mono_metadata_nested_in_typedef (image, type_token))) {
5028 class->nested_in = mono_class_create_from_typedef (image, nesting_tokeen);
5029 if (!class->nested_in) {
5030 mono_internal_hash_table_remove (&image->class_cache, GUINT_TO_POINTER (type_token));
5031 mono_loader_unlock ();
5032 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5033 return NULL;
5034 }
5035 }
5036
5037 mono_class_setup_parent (class, parent);
5038
5039 /* uses ->valuetype, which is initialized by mono_class_setup_parent above */
5040 mono_class_setup_mono_type (class);
5041
5042 if ((class->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
5043 class->unicode = 1;
5044
5045 #ifdef HOST_WIN32
5046 if ((class->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
5047 class->unicode = 1;
5048 #endif
5049
5050 class->cast_class = class->element_class = class;
5051
5052 if (!class->enumtype) {
5053 if (!mono_metadata_interfaces_from_typedef_full (
5054 image, type_token, &interfaces, &icount, FALSE, context)){
5055 mono_loader_unlock ();
5056 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5057 return NULL;
5058 }
5059
5060 class->interfaces = interfaces;
5061 class->interface_count = icount;
5062 class->interfaces_inited = 1;
5063 }
5064
5065 /*g_print ("Load class %s\n", name);*/
5066
5067 /*
5068 * Compute the field and method lists
5069 */
5070 class->field.first = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
5071 class->method.first = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
5072
5073 if (tt->rows > tidx){
5074 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
5075 field_last = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
5076 method_last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
5077 } else {
5078 field_last = image->tables [MONO_TABLE_FIELD].rows;
5079 method_last = image->tables [MONO_TABLE_METHOD].rows;
5080 }
5081
5082 if (cols [MONO_TYPEDEF_FIELD_LIST] &&
5083 cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
5084 class->field.count = field_last - class->field.first;
5085 else
5086 class->field.count = 0;
5087
5088 if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
5089 class->method.count = method_last - class->method.first;
5090 else
5091 class->method.count = 0;
5092
5093 /* reserve space to store vector pointer in arrays */
5094 if (is_corlib_image (image) && !strcmp (nspace, "System") && !strcmp (name, "Array")) {
5095 class->instance_size += 2 * sizeof (gpointer);
5096 g_assert (class->field.count == 0);
5097 }
5098
5099 if (class->enumtype) {
5100 MonoType *enum_basetype = mono_class_find_enum_basetype (class);
5101 if (!enum_basetype) {
5102 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
5103 mono_loader_unlock ();
5104 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5105 return NULL;
5106 }
5107 class->cast_class = class->element_class = mono_class_from_mono_type (enum_basetype);
5108 }
5109
5110 /*
5111 * If we're a generic type definition, load the constraints.
5112 * We must do this after the class has been constructed to make certain recursive scenarios
5113 * work.
5114 */
5115 if (class->generic_container && !mono_metadata_load_generic_param_constraints_full (image, type_token, class->generic_container)){
5116 char *class_name = g_strdup_printf("%s.%s", class->name_space, class->name);
5117 char *error = concat_two_strings_with_zero (class->image, class_name, class->image->assembly_name);
5118 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, error);
5119 g_free (class_name);
5120 mono_loader_unlock ();
5121 mono_profiler_class_loaded (class, MONO_PROFILE_FAILED);
5122 return NULL;
5123 }
5124
5125 if (class->image->assembly_name && !strcmp (class->image->assembly_name, "Mono.Simd") && !strcmp (nspace, "Mono.Simd")) {
5126 if (!strncmp (name, "Vector", 6))
5127 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");
5128 }
5129
5130 mono_loader_unlock ();
5131
5132 mono_profiler_class_loaded (class, MONO_PROFILE_OK);
5133
5134 return class;
5135 }
5136
5137 /** is klass Nullable<T>? */
5138 gboolean
5139 mono_class_is_nullable (MonoClass *klass)
5140 {
5141 return klass->generic_class != NULL &&
5142 klass->generic_class->container_class == mono_defaults.generic_nullable_class;
5143 }
5144
5145
5146 /** if klass is T? return T */
5147 MonoClass*
5148 mono_class_get_nullable_param (MonoClass *klass)
5149 {
5150 g_assert (mono_class_is_nullable (klass));
5151 return mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
5152 }
5153
5154 /*
5155 * Create the `MonoClass' for an instantiation of a generic type.
5156 * We only do this if we actually need it.
5157 */
5158 MonoClass*
5159 mono_generic_class_get_class (MonoGenericClass *gclass)
5160 {
5161 MonoClass *klass, *gklass;
5162
5163 mono_loader_lock ();
5164 if (gclass->cached_class) {
5165 mono_loader_unlock ();
5166 return gclass->cached_class;
5167 }
5168
5169 gclass->cached_class = g_malloc0 (sizeof (MonoClass));
5170 klass = gclass->cached_class;
5171
5172 gklass = gclass->container_class;
5173
5174 if (gklass->nested_in) {
5175 /*
5176 * FIXME: the nested type context should include everything the
5177 * nesting context should have, but it may also have additional
5178 * generic parameters...
5179 */
5180 klass->nested_in = mono_class_inflate_generic_class (gklass->nested_in,
5181 mono_generic_class_get_context (gclass));
5182 }
5183
5184 klass->name = gklass->name;
5185 klass->name_space = gklass->name_space;
5186
5187 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5188
5189 klass->image = gklass->image;
5190 klass->flags = gklass->flags;
5191 klass->type_token = gklass->type_token;
5192 klass->field.count = gklass->field.count;
5193
5194 klass->is_inflated = 1;
5195 klass->generic_class = gclass;
5196
5197 klass->this_arg.type = klass->byval_arg.type = MONO_TYPE_GENERICINST;
5198 klass->this_arg.data.generic_class = klass->byval_arg.data.generic_class = gclass;
5199 klass->this_arg.byref = TRUE;
5200 klass->enumtype = gklass->enumtype;
5201 klass->valuetype = gklass->valuetype;
5202
5203 klass->cast_class = klass->element_class = klass;
5204
5205 if (mono_class_is_nullable (klass))
5206 klass->cast_class = klass->element_class = mono_class_get_nullable_param (klass);
5207
5208 /*
5209 * We're not interested in the nested classes of a generic instance.
5210 * We use the generic type definition to look for nested classes.
5211 */
5212
5213 if (gklass->parent) {
5214 klass->parent = mono_class_inflate_generic_class (gklass->parent, mono_generic_class_get_context (gclass));
5215 }
5216
5217 if (klass->parent)
5218 mono_class_setup_parent (klass, klass->parent);
5219
5220 if (klass->enumtype) {
5221 klass->cast_class = gklass->cast_class;
5222 klass->element_class = gklass->element_class;
5223 }
5224
5225 if (gclass->is_dynamic) {
5226 klass->inited = 1;
5227
5228 mono_class_setup_supertypes (klass);
5229
5230 if (klass->enumtype) {
5231 /*
5232 * For enums, gklass->fields might not been set, but instance_size etc. is
5233 * already set in mono_reflection_create_internal_class (). For non-enums,
5234 * these will be computed normally in mono_class_layout_fields ().
5235 */
5236 klass->instance_size = gklass->instance_size;
5237 klass->sizes.class_size = gklass->sizes.class_size;
5238 klass->size_inited = 1;
5239 }
5240 }
5241
5242 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5243
5244 inflated_classes ++;
5245 inflated_classes_size += sizeof (MonoClass);
5246
5247 mono_loader_unlock ();
5248
5249 return klass;
5250 }
5251
5252 static MonoClass*
5253 make_generic_param_class (MonoGenericParam *param, MonoImage *image, gboolean is_mvar, MonoGenericParamInfo *pinfo)
5254 {
5255 MonoClass *klass, **ptr;
5256 int count, pos, i;
5257 MonoGenericContainer *container = mono_generic_param_owner (param);
5258
5259 if (!image)
5260 /* FIXME: */
5261 image = mono_defaults.corlib;
5262
5263 klass = mono_image_alloc0 (image, sizeof (MonoClass));
5264 classes_size += sizeof (MonoClass);
5265
5266 if (pinfo) {
5267 klass->name = pinfo->name;
5268 } else {
5269 int n = mono_generic_param_num (param);
5270 klass->name = mono_image_alloc0 (image, 16);
5271 sprintf ((char*)klass->name, "%d", n);
5272 }
5273
5274 if (container) {
5275 if (is_mvar) {
5276 MonoMethod *omethod = container->owner.method;
5277 klass->name_space = (omethod && omethod->klass) ? omethod->klass->name_space : "";
5278 } else {
5279 MonoClass *oklass = container->owner.klass;
5280 klass->name_space = oklass ? oklass->name_space : "";
5281 }
5282 } else {
5283 klass->name_space = "";
5284 }
5285
5286 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5287
5288 count = 0;
5289 if (pinfo)
5290 for (ptr = pinfo->constraints; ptr && *ptr; ptr++, count++)
5291 ;
5292
5293 pos = 0;
5294 if ((count > 0) && !MONO_CLASS_IS_INTERFACE (pinfo->constraints [0])) {
5295 klass->parent = pinfo->constraints [0];
5296 pos++;
5297 } else if (pinfo && pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT)
5298 klass->parent = mono_class_from_name (mono_defaults.corlib, "System", "ValueType");
5299 else
5300 klass->parent = mono_defaults.object_class;
5301
5302
5303 if (count - pos > 0) {
5304 klass->interface_count = count - pos;
5305 klass->interfaces = mono_image_alloc0 (image, sizeof (MonoClass *) * (count - pos));
5306 klass->interfaces_inited = TRUE;
5307 for (i = pos; i < count; i++)
5308 klass->interfaces [i - pos] = pinfo->constraints [i];
5309 }
5310
5311 klass->image = image;
5312
5313 klass->inited = TRUE;
5314 klass->cast_class = klass->element_class = klass;
5315 klass->flags = TYPE_ATTRIBUTE_PUBLIC;
5316
5317 klass->this_arg.type = klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
5318 klass->this_arg.data.generic_param = klass->byval_arg.data.generic_param = param;
5319 klass->this_arg.byref = TRUE;
5320
5321 /* FIXME: shouldn't this be ->type_token? */
5322 klass->sizes.generic_param_token = pinfo ? pinfo->token : 0;
5323
5324 mono_class_setup_supertypes (klass);
5325
5326 if (count - pos > 0) {
5327 mono_class_setup_vtable (klass->parent);
5328 g_assert (!klass->parent->exception_type);
5329 setup_interface_offsets (klass, klass->parent->vtable_size);
5330 }
5331
5332 return klass;
5333 }
5334
5335 #define FAST_CACHE_SIZE 16
5336 static MonoClass *var_cache_fast [FAST_CACHE_SIZE];
5337 static MonoClass *mvar_cache_fast [FAST_CACHE_SIZE];
5338 static GHashTable *var_cache_slow;
5339 static GHashTable *mvar_cache_slow;
5340
5341 static MonoClass *
5342 get_anon_gparam_class (MonoGenericParam *param, gboolean is_mvar)
5343 {
5344 int n = mono_generic_param_num (param);
5345 GHashTable *ht;
5346
5347 if (n < FAST_CACHE_SIZE)
5348 return (is_mvar ? mvar_cache_fast : var_cache_fast) [n];
5349 ht = is_mvar ? mvar_cache_slow : var_cache_slow;
5350 return ht ? g_hash_table_lookup (ht, GINT_TO_POINTER (n)) : NULL;
5351 }
5352
5353 static void
5354 set_anon_gparam_class (MonoGenericParam *param, gboolean is_mvar, MonoClass *klass)
5355 {
5356 int n = mono_generic_param_num (param);
5357 GHashTable *ht;
5358
5359 if (n < FAST_CACHE_SIZE) {
5360 (is_mvar ? mvar_cache_fast : var_cache_fast) [n] = klass;
5361 return;
5362 }
5363 ht = is_mvar ? mvar_cache_slow : var_cache_slow;
5364 if (!ht) {
5365 ht = g_hash_table_new (NULL, NULL);
5366 if (is_mvar)
5367 mvar_cache_slow = ht;
5368 else
5369 var_cache_slow = ht;
5370 }
5371
5372 g_hash_table_insert (ht, GINT_TO_POINTER (n), klass);
5373 }
5374
5375 /*
5376 * LOCKING: Acquires the loader lock.
5377 */
5378 MonoClass *
5379 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *image, gboolean is_mvar)
5380 {
5381 MonoGenericContainer *container = mono_generic_param_owner (param);
5382 MonoGenericParamInfo *pinfo;
5383 MonoClass *klass;
5384
5385 mono_loader_lock ();
5386
5387 if (container) {
5388 pinfo = mono_generic_param_info (param);
5389 if (pinfo->pklass) {
5390 mono_loader_unlock ();
5391 return pinfo->pklass;
5392 }
5393 } else {
5394 pinfo = NULL;
5395 image = NULL;
5396
5397 klass = get_anon_gparam_class (param, is_mvar);
5398 if (klass) {
5399 mono_loader_unlock ();
5400 return klass;
5401 }
5402 }
5403
5404 if (!image && container) {
5405 if (is_mvar) {
5406 MonoMethod *method = container->owner.method;
5407 image = (method && method->klass) ? method->klass->image : NULL;
5408 } else {
5409 MonoClass *klass = container->owner.klass;
5410 // FIXME: 'klass' should not be null
5411 // But, monodis creates GenericContainers without associating a owner to it
5412 image = klass ? klass->image : NULL;
5413 }
5414 }
5415
5416 klass = make_generic_param_class (param, image, is_mvar, pinfo);
5417
5418 mono_memory_barrier ();
5419
5420 if (container)
5421 pinfo->pklass = klass;
5422 else
5423 set_anon_gparam_class (param, is_mvar, klass);
5424
5425 mono_loader_unlock ();
5426
5427 /* FIXME: Should this go inside 'make_generic_param_klass'? */
5428 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5429
5430 return klass;
5431 }
5432
5433 MonoClass *
5434 mono_ptr_class_get (MonoType *type)
5435 {
5436 MonoClass *result;
5437 MonoClass *el_class;
5438 MonoImage *image;
5439 char *name;
5440
5441 el_class = mono_class_from_mono_type (type);
5442 image = el_class->image;
5443
5444 mono_loader_lock ();
5445
5446 if (!image->ptr_cache)
5447 image->ptr_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
5448
5449 if ((result = g_hash_table_lookup (image->ptr_cache, el_class))) {
5450 mono_loader_unlock ();
5451 return result;
5452 }
5453 result = mono_image_alloc0 (image, sizeof (MonoClass));
5454
5455 classes_size += sizeof (MonoClass);
5456
5457 result->parent = NULL; /* no parent for PTR types */
5458 result->name_space = el_class->name_space;
5459 name = g_strdup_printf ("%s*", el_class->name);
5460 result->name = mono_image_strdup (image, name);
5461 g_free (name);
5462
5463 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
5464
5465 result->image = el_class->image;
5466 result->inited = TRUE;
5467 result->flags = TYPE_ATTRIBUTE_CLASS | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
5468 /* Can pointers get boxed? */
5469 result->instance_size = sizeof (gpointer);
5470 result->cast_class = result->element_class = el_class;
5471 result->blittable = TRUE;
5472
5473 result->this_arg.type = result->byval_arg.type = MONO_TYPE_PTR;
5474 result->this_arg.data.type = result->byval_arg.data.type = &result->element_class->byval_arg;
5475 result->this_arg.byref = TRUE;
5476
5477 mono_class_setup_supertypes (result);
5478
5479 g_hash_table_insert (image->ptr_cache, el_class, result);
5480
5481 mono_loader_unlock ();
5482
5483 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
5484
5485 return result;
5486 }
5487
5488 static MonoClass *
5489 mono_fnptr_class_get (MonoMethodSignature *sig)
5490 {
5491 MonoClass *result;
5492 static GHashTable *ptr_hash = NULL;
5493
5494 /* FIXME: These should be allocate from a mempool as well, but which one ? */
5495
5496 mono_loader_lock ();
5497
5498 if (!ptr_hash)
5499 ptr_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
5500
5501 if ((result = g_hash_table_lookup (ptr_hash, sig))) {
5502 mono_loader_unlock ();
5503 return result;
5504 }
5505 result = g_new0 (MonoClass, 1);
5506
5507 result->parent = NULL; /* no parent for PTR types */
5508 result->name_space = "System";
5509 result->name = "MonoFNPtrFakeClass";
5510
5511 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
5512
5513 result->image = mono_defaults.corlib; /* need to fix... */
5514 result->inited = TRUE;
5515 result->flags = TYPE_ATTRIBUTE_CLASS; /* | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK); */
5516 /* Can pointers get boxed? */
5517 result->instance_size = sizeof (gpointer);
5518 result->cast_class = result->element_class = result;
5519 result->blittable = TRUE;
5520
5521 result->this_arg.type = result->byval_arg.type = MONO_TYPE_FNPTR;
5522 result->this_arg.data.method = result->byval_arg.data.method = sig;
5523 result->this_arg.byref = TRUE;
5524 result->blittable = TRUE;
5525
5526 mono_class_setup_supertypes (result);
5527
5528 g_hash_table_insert (ptr_hash, sig, result);
5529
5530 mono_loader_unlock ();
5531
5532 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
5533
5534 return result;
5535 }
5536
5537 MonoClass *
5538 mono_class_from_mono_type (MonoType *type)
5539 {
5540 switch (type->type) {
5541 case MONO_TYPE_OBJECT:
5542 return type->data.klass? type->data.klass: mono_defaults.object_class;
5543 case MONO_TYPE_VOID:
5544 return type->data.klass? type->data.klass: mono_defaults.void_class;
5545 case MONO_TYPE_BOOLEAN:
5546 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
5547 case MONO_TYPE_CHAR:
5548 return type->data.klass? type->data.klass: mono_defaults.char_class;
5549 case MONO_TYPE_I1:
5550 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
5551 case MONO_TYPE_U1:
5552 return type->data.klass? type->data.klass: mono_defaults.byte_class;
5553 case MONO_TYPE_I2:
5554 return type->data.klass? type->data.klass: mono_defaults.int16_class;
5555 case MONO_TYPE_U2:
5556 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
5557 case MONO_TYPE_I4:
5558 return type->data.klass? type->data.klass: mono_defaults.int32_class;
5559 case MONO_TYPE_U4:
5560 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
5561 case MONO_TYPE_I:
5562 return type->data.klass? type->data.klass: mono_defaults.int_class;
5563 case MONO_TYPE_U:
5564 return type->data.klass? type->data.klass: mono_defaults.uint_class;
5565 case MONO_TYPE_I8:
5566 return type->data.klass? type->data.klass: mono_defaults.int64_class;
5567 case MONO_TYPE_U8:
5568 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
5569 case MONO_TYPE_R4:
5570 return type->data.klass? type->data.klass: mono_defaults.single_class;
5571 case MONO_TYPE_R8:
5572 return type->data.klass? type->data.klass: mono_defaults.double_class;
5573 case MONO_TYPE_STRING:
5574 return type->data.klass? type->data.klass: mono_defaults.string_class;
5575 case MONO_TYPE_TYPEDBYREF:
5576 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
5577 case MONO_TYPE_ARRAY:
5578 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
5579 case MONO_TYPE_PTR:
5580 return mono_ptr_class_get (type->data.type);
5581 case MONO_TYPE_FNPTR:
5582 return mono_fnptr_class_get (type->data.method);
5583 case MONO_TYPE_SZARRAY:
5584 return mono_array_class_get (type->data.klass, 1);
5585 case MONO_TYPE_CLASS:
5586 case MONO_TYPE_VALUETYPE:
5587 return type->data.klass;
5588 case MONO_TYPE_GENERICINST:
5589 return mono_generic_class_get_class (type->data.generic_class);
5590 case MONO_TYPE_VAR:
5591 return mono_class_from_generic_parameter (type->data.generic_param, NULL, FALSE);
5592 case MONO_TYPE_MVAR:
5593 return mono_class_from_generic_parameter (type->data.generic_param, NULL, TRUE);
5594 default:
5595 g_warning ("mono_class_from_mono_type: implement me 0x%02x\n", type->type);
5596 g_assert_not_reached ();
5597 }
5598
5599 return NULL;
5600 }
5601
5602 /**
5603 * mono_type_retrieve_from_typespec
5604 * @image: context where the image is created
5605 * @type_spec: typespec token
5606 * @context: the generic context used to evaluate generic instantiations in
5607 */
5608 static MonoType *
5609 mono_type_retrieve_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, gboolean *did_inflate, MonoError *error)
5610 {
5611 MonoType *t = mono_type_create_from_typespec (image, type_spec);
5612
5613 mono_error_init (error);
5614 *did_inflate = FALSE;
5615
5616 if (!t) {
5617 char *name = mono_class_name_from_token (image, type_spec);
5618 char *assembly = mono_assembly_name_from_token (image, type_spec);
5619 mono_error_set_type_load_name (error, name, assembly, "Could not resolve typespec token %08x", type_spec);
5620 return NULL;
5621 }
5622
5623 if (context && (context->class_inst || context->method_inst)) {
5624 MonoType *inflated = inflate_generic_type (NULL, t, context, error);
5625
5626 if (!mono_error_ok (error))
5627 return NULL;
5628
5629 if (inflated) {
5630 t = inflated;
5631 *did_inflate = TRUE;
5632 }
5633 }
5634 return t;
5635 }
5636
5637 /**
5638 * mono_class_create_from_typespec
5639 * @image: context where the image is created
5640 * @type_spec: typespec token
5641 * @context: the generic context used to evaluate generic instantiations in
5642 */
5643 static MonoClass *
5644 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, MonoError *error)
5645 {
5646 MonoClass *ret;
5647 gboolean inflated = FALSE;
5648 MonoType *t = mono_type_retrieve_from_typespec (image, type_spec, context, &inflated, error);
5649 if (!mono_error_ok (error))
5650 return NULL;
5651 ret = mono_class_from_mono_type (t);
5652 if (inflated)
5653 mono_metadata_free_type (t);
5654 return ret;
5655 }
5656
5657 /**
5658 * mono_bounded_array_class_get:
5659 * @element_class: element class
5660 * @rank: the dimension of the array class
5661 * @bounded: whenever the array has non-zero bounds
5662 *
5663 * Returns: a class object describing the array with element type @element_type and
5664 * dimension @rank.
5665 */
5666 MonoClass *
5667 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
5668 {
5669 MonoImage *image;
5670 MonoClass *class;
5671 MonoClass *parent = NULL;
5672 GSList *list, *rootlist = NULL;
5673 int nsize;
5674 char *name;
5675 gboolean corlib_type = FALSE;
5676
5677 g_assert (rank <= 255);
5678
5679 if (rank > 1)
5680 /* bounded only matters for one-dimensional arrays */
5681 bounded = FALSE;
5682
5683 image = eclass->image;
5684
5685 if (rank == 1 && !bounded) {
5686 /*
5687 * This case is very frequent not just during compilation because of calls
5688 * from mono_class_from_mono_type (), mono_array_new (),
5689 * Array:CreateInstance (), etc, so use a separate cache + a separate lock.
5690 */
5691 EnterCriticalSection (&image->szarray_cache_lock);
5692 if (!image->szarray_cache)
5693 image->szarray_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
5694 class = g_hash_table_lookup (image->szarray_cache, eclass);
5695 LeaveCriticalSection (&image->szarray_cache_lock);
5696 if (class)
5697 return class;
5698
5699 mono_loader_lock ();
5700 } else {
5701 mono_loader_lock ();
5702
5703 if (!image->array_cache)
5704 image->array_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
5705
5706 if ((rootlist = list = g_hash_table_lookup (image->array_cache, eclass))) {
5707 for (; list; list = list->next) {
5708 class = list->data;
5709 if ((class->rank == rank) && (class->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
5710 mono_loader_unlock ();
5711 return class;
5712 }
5713 }
5714 }
5715 }
5716
5717 /* for the building corlib use System.Array from it */
5718 if (image->assembly && image->assembly->dynamic && image->assembly_name && strcmp (image->assembly_name, "mscorlib") == 0) {
5719 parent = mono_class_from_name (image, "System", "Array");
5720 corlib_type = TRUE;
5721 } else {
5722 parent = mono_defaults.array_class;
5723 if (!parent->inited)
5724 mono_class_init (parent);
5725 }
5726
5727 class = mono_image_alloc0 (image, sizeof (MonoClass));
5728
5729 class->image = image;
5730 class->name_space = eclass->name_space;
5731 nsize = strlen (eclass->name);
5732 name = g_malloc (nsize + 2 + rank + 1);
5733 memcpy (name, eclass->name, nsize);
5734 name [nsize] = '[';
5735 if (rank > 1)
5736 memset (name + nsize + 1, ',', rank - 1);
5737 if (bounded)
5738 name [nsize + rank] = '*';
5739 name [nsize + rank + bounded] = ']';
5740 name [nsize + rank + bounded + 1] = 0;
5741 class->name = mono_image_strdup (image, name);
5742 g_free (name);
5743
5744 mono_profiler_class_event (class, MONO_PROFILE_START_LOAD);
5745
5746 classes_size += sizeof (MonoClass);
5747
5748 class->type_token = 0;
5749 /* all arrays are marked serializable and sealed, bug #42779 */
5750 class->flags = TYPE_ATTRIBUTE_CLASS | TYPE_ATTRIBUTE_SERIALIZABLE | TYPE_ATTRIBUTE_SEALED | TYPE_ATTRIBUTE_PUBLIC;
5751 class->parent = parent;
5752 class->instance_size = mono_class_instance_size (class->parent);
5753
5754 if (eclass->enumtype && !mono_class_enum_basetype (eclass)) {
5755 if (!eclass->ref_info_handle || eclass->wastypebuilder) {
5756 g_warning ("Only incomplete TypeBuilder objects are allowed to be an enum without base_type");
5757 g_assert (eclass->ref_info_handle && !eclass->wastypebuilder);
5758 }
5759 /* element_size -1 is ok as this is not an instantitable type*/
5760 class->sizes.element_size = -1;
5761 } else
5762 class->sizes.element_size = mono_class_array_element_size (eclass);
5763
5764 mono_class_setup_supertypes (class);
5765
5766 if (eclass->generic_class)
5767 mono_class_init (eclass);
5768 if (!eclass->size_inited)
5769 mono_class_setup_fields (eclass);
5770 if (eclass->exception_type) /*FIXME we fail the array type, but we have to let other fields be set.*/
5771 mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
5772
5773 class->has_references = MONO_TYPE_IS_REFERENCE (&eclass->byval_arg) || eclass->has_references? TRUE: FALSE;
5774
5775 class->rank = rank;
5776
5777 if (eclass->enumtype)
5778 class->cast_class = eclass->element_class;
5779 else
5780 class->cast_class = eclass;
5781
5782 class->element_class = eclass;
5783
5784 if ((rank > 1) || bounded) {
5785 MonoArrayType *at = mono_image_alloc0 (image, sizeof (MonoArrayType));
5786 class->byval_arg.type = MONO_TYPE_ARRAY;
5787 class->byval_arg.data.array = at;
5788 at->eklass = eclass;
5789 at->rank = rank;
5790 /* FIXME: complete.... */
5791 } else {
5792 class->byval_arg.type = MONO_TYPE_SZARRAY;
5793 class->byval_arg.data.klass = eclass;
5794 }
5795 class->this_arg = class->byval_arg;
5796 class->this_arg.byref = 1;
5797 if (corlib_type) {
5798 class->inited = 1;
5799 }
5800
5801 class->generic_container = eclass->generic_container;
5802
5803 if (rank == 1 && !bounded) {
5804 MonoClass *prev_class;
5805
5806 EnterCriticalSection (&image->szarray_cache_lock);
5807 prev_class = g_hash_table_lookup (image->szarray_cache, eclass);
5808 if (prev_class)
5809 /* Someone got in before us */
5810 class = prev_class;
5811 else
5812 g_hash_table_insert (image->szarray_cache, eclass, class);
5813 LeaveCriticalSection (&image->szarray_cache_lock);
5814 } else {
5815 list = g_slist_append (rootlist, class);
5816 g_hash_table_insert (image->array_cache, eclass, list);
5817 }
5818
5819 mono_loader_unlock ();
5820
5821 mono_profiler_class_loaded (class, MONO_PROFILE_OK);
5822
5823 return class;
5824 }
5825
5826 /**
5827 * mono_array_class_get:
5828 * @element_class: element class
5829 * @rank: the dimension of the array class
5830 *
5831 * Returns: a class object describing the array with element type @element_type and
5832 * dimension @rank.
5833 */
5834 MonoClass *
5835 mono_array_class_get (MonoClass *eclass, guint32 rank)
5836 {
5837 return mono_bounded_array_class_get (eclass, rank, FALSE);
5838 }
5839
5840 /**
5841 * mono_class_instance_size:
5842 * @klass: a class
5843 *
5844 * Returns: the size of an object instance
5845 */
5846 gint32
5847 mono_class_instance_size (MonoClass *klass)
5848 {
5849 if (!klass->size_inited)
5850 mono_class_init (klass);
5851
5852 return klass->instance_size;
5853 }
5854
5855 /**
5856 * mono_class_min_align:
5857 * @klass: a class
5858 *
5859 * Returns: minimm alignment requirements
5860 */
5861 gint32
5862 mono_class_min_align (MonoClass *klass)
5863 {
5864 if (!klass->size_inited)
5865 mono_class_init (klass);
5866
5867 return klass->min_align;
5868 }
5869
5870 /**
5871 * mono_class_value_size:
5872 * @klass: a class
5873 *
5874 * This function is used for value types, and return the
5875 * space and the alignment to store that kind of value object.
5876 *
5877 * Returns: the size of a value of kind @klass
5878 */
5879 gint32
5880 mono_class_value_size (MonoClass *klass, guint32 *align)
5881 {
5882 gint32 size;
5883
5884 /* fixme: check disable, because we still have external revereces to
5885 * mscorlib and Dummy Objects
5886 */
5887 /*g_assert (klass->valuetype);*/
5888
5889 size = mono_class_instance_size (klass) - sizeof (MonoObject);
5890
5891 if (align)
5892 *align = klass->min_align;
5893
5894 return size;
5895 }
5896
5897 /**
5898 * mono_class_data_size:
5899 * @klass: a class
5900 *
5901 * Returns: the size of the static class data
5902 */
5903 gint32
5904 mono_class_data_size (MonoClass *klass)
5905 {
5906 if (!klass->inited)
5907 mono_class_init (klass);
5908
5909 /* in arrays, sizes.class_size is unioned with element_size
5910 * and arrays have no static fields
5911 */
5912 if (klass->rank)
5913 return 0;
5914 return klass->sizes.class_size;
5915 }
5916
5917 /*
5918 * Auxiliary routine to mono_class_get_field
5919 *
5920 * Takes a field index instead of a field token.
5921 */
5922 static MonoClassField *
5923 mono_class_get_field_idx (MonoClass *class, int idx)
5924 {
5925 mono_class_setup_fields_locking (class);
5926 if (class->exception_type)
5927 return NULL;
5928
5929 while (class) {
5930 if (class->image->uncompressed_metadata) {
5931 /*
5932 * class->field.first points to the FieldPtr table, while idx points into the
5933 * Field table, so we have to do a search.
5934 */
5935 /*FIXME this is broken for types with multiple fields with the same name.*/
5936 const char *name = mono_metadata_string_heap (class->image, mono_metadata_decode_row_col (&class->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
5937 int i;
5938
5939 for (i = 0; i < class->field.count; ++i)
5940 if (mono_field_get_name (&class->fields [i]) == name)
5941 return &class->fields [i];
5942 g_assert_not_reached ();
5943 } else {
5944 if (class->field.count) {
5945 if ((idx >= class->field.first) && (idx < class->field.first + class->field.count)){
5946 return &class->fields [idx - class->field.first];
5947 }
5948 }
5949 }
5950 class = class->parent;
5951 }
5952 return NULL;
5953 }
5954
5955 /**
5956 * mono_class_get_field:
5957 * @class: the class to lookup the field.
5958 * @field_token: the field token
5959 *
5960 * Returns: A MonoClassField representing the type and offset of
5961 * the field, or a NULL value if the field does not belong to this
5962 * class.
5963 */
5964 MonoClassField *
5965 mono_class_get_field (MonoClass *class, guint32 field_token)
5966 {
5967 int idx = mono_metadata_token_index (field_token);
5968
5969 g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
5970
5971 return mono_class_get_field_idx (class, idx - 1);
5972 }
5973
5974 /**
5975 * mono_class_get_field_from_name:
5976 * @klass: the class to lookup the field.
5977 * @name: the field name
5978 *
5979 * Search the class @klass and it's parents for a field with the name @name.
5980 *
5981 * Returns: the MonoClassField pointer of the named field or NULL
5982 */
5983 MonoClassField *
5984 mono_class_get_field_from_name (MonoClass *klass, const char *name)
5985 {
5986 return mono_class_get_field_from_name_full (klass, name, NULL);
5987 }
5988
5989 /**
5990 * mono_class_get_field_from_name_full:
5991 * @klass: the class to lookup the field.
5992 * @name: the field name
5993 * @type: the type of the fields. This optional.
5994 *
5995 * Search the class @klass and it's parents for a field with the name @name and type @type.
5996 *
5997 * If @klass is an inflated generic type, the type comparison is done with the equivalent field
5998 * of its generic type definition.
5999 *
6000 * Returns: the MonoClassField pointer of the named field or NULL
6001 */
6002 MonoClassField *
6003 mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type)
6004 {
6005 int i;
6006
6007 mono_class_setup_fields_locking (klass);
6008 if (klass->exception_type)
6009 return NULL;
6010
6011 while (klass) {
6012 for (i = 0; i < klass->field.count; ++i) {
6013 MonoClassField *field = &klass->fields [i];
6014
6015 if (strcmp (name, mono_field_get_name (field)) != 0)
6016 continue;
6017
6018 if (type) {
6019 MonoType *field_type = mono_metadata_get_corresponding_field_from_generic_type_definition (field)->type;
6020 if (!mono_metadata_type_equal_full (type, field_type, TRUE))
6021 continue;
6022 }
6023 return field;
6024 }
6025 klass = klass->parent;
6026 }
6027 return NULL;
6028 }
6029
6030 /**
6031 * mono_class_get_field_token:
6032 * @field: the field we need the token of
6033 *
6034 * Get the token of a field. Note that the tokesn is only valid for the image
6035 * the field was loaded from. Don't use this function for fields in dynamic types.
6036 *
6037 * Returns: the token representing the field in the image it was loaded from.
6038 */
6039 guint32
6040 mono_class_get_field_token (MonoClassField *field)
6041 {
6042 MonoClass *klass = field->parent;
6043 int i;
6044
6045 mono_class_setup_fields_locking (klass);
6046 if (klass->exception_type)
6047 return 0;
6048
6049 while (klass) {
6050 for (i = 0; i < klass->field.count; ++i) {
6051 if (&klass->fields [i] == field) {
6052 int idx = klass->field.first + i + 1;
6053
6054 if (klass->image->uncompressed_metadata)
6055 idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
6056 return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
6057 }
6058 }
6059 klass = klass->parent;
6060 }
6061
6062 g_assert_not_reached ();
6063 return 0;
6064 }
6065
6066 static int
6067 mono_field_get_index (MonoClassField *field)
6068 {
6069 int index = field - field->parent->fields;
6070
6071 g_assert (index >= 0 && index < field->parent->field.count);
6072
6073 return index;
6074 }
6075
6076 /*
6077 * mono_class_get_field_default_value:
6078 *
6079 * Return the default value of the field as a pointer into the metadata blob.
6080 */
6081 const char*
6082 mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type)
6083 {
6084 guint32 cindex;
6085 guint32 constant_cols [MONO_CONSTANT_SIZE];
6086 int field_index;
6087 MonoClass *klass = field->parent;
6088
6089 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT);
6090
6091 if (!klass->ext || !klass->ext->field_def_values) {
6092 mono_loader_lock ();
6093 mono_class_alloc_ext (klass);
6094 if (!klass->ext->field_def_values)
6095 klass->ext->field_def_values = mono_image_alloc0 (klass->image, sizeof (MonoFieldDefaultValue) * klass->field.count);
6096 mono_loader_unlock ();
6097 }
6098
6099 field_index = mono_field_get_index (field);
6100
6101 if (!klass->ext->field_def_values [field_index].data) {
6102 cindex = mono_metadata_get_constant_index (field->parent->image, mono_class_get_field_token (field), 0);
6103 g_assert (cindex);
6104 g_assert (!(field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA));
6105
6106 mono_metadata_decode_row (&field->parent->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6107 klass->ext->field_def_values [field_index].def_type = constant_cols [MONO_CONSTANT_TYPE];
6108 klass->ext->field_def_values [field_index].data = (gpointer)mono_metadata_blob_heap (field->parent->image, constant_cols [MONO_CONSTANT_VALUE]);
6109 }
6110
6111 *def_type = klass->ext->field_def_values [field_index].def_type;
6112 return klass->ext->field_def_values [field_index].data;
6113 }
6114
6115 /*
6116 * mono_class_get_property_default_value:
6117 *
6118 * Return the default value of the field as a pointer into the metadata blob.
6119 */
6120 const char*
6121 mono_class_get_property_default_value (MonoProperty *property, MonoTypeEnum *def_type)
6122 {
6123 guint32 cindex;
6124 guint32 constant_cols [MONO_CONSTANT_SIZE];
6125 MonoClass *klass = property->parent;
6126
6127 g_assert (property->attrs & PROPERTY_ATTRIBUTE_HAS_DEFAULT);
6128 /*We don't cache here because it is not used by C# so it's quite rare.*/
6129
6130 cindex = mono_metadata_get_constant_index (klass->image, mono_class_get_property_token (property), 0);
6131 if (!cindex)
6132 return NULL;
6133
6134 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6135 *def_type = constant_cols [MONO_CONSTANT_TYPE];
6136 return (gpointer)mono_metadata_blob_heap (klass->image, constant_cols [MONO_CONSTANT_VALUE]);
6137 }
6138
6139 guint32
6140 mono_class_get_event_token (MonoEvent *event)
6141 {
6142 MonoClass *klass = event->parent;
6143 int i;
6144
6145 while (klass) {
6146 if (klass->ext) {
6147 for (i = 0; i < klass->ext->event.count; ++i) {
6148 if (&klass->ext->events [i] == event)
6149 return mono_metadata_make_token (MONO_TABLE_EVENT, klass->ext->event.first + i + 1);
6150 }
6151 }
6152 klass = klass->parent;
6153 }
6154
6155 g_assert_not_reached ();
6156 return 0;
6157 }
6158
6159 MonoProperty*
6160 mono_class_get_property_from_name (MonoClass *klass, const char *name)
6161 {
6162 while (klass) {
6163 MonoProperty* p;
6164 gpointer iter = NULL;
6165 while ((p = mono_class_get_properties (klass, &iter))) {
6166 if (! strcmp (name, p->name))
6167 return p;
6168 }
6169 klass = klass->parent;
6170 }
6171 return NULL;
6172 }
6173
6174 guint32
6175 mono_class_get_property_token (MonoProperty *prop)
6176 {
6177 MonoClass *klass = prop->parent;
6178 while (klass) {
6179 MonoProperty* p;
6180 int i = 0;
6181 gpointer iter = NULL;
6182 while ((p = mono_class_get_properties (klass, &iter))) {
6183 if (&klass->ext->properties [i] == prop)
6184 return mono_metadata_make_token (MONO_TABLE_PROPERTY, klass->ext->property.first + i + 1);
6185
6186 i ++;
6187 }
6188 klass = klass->parent;
6189 }
6190
6191 g_assert_not_reached ();
6192 return 0;
6193 }
6194
6195 char *
6196 mono_class_name_from_token (MonoImage *image, guint32 type_token)
6197 {
6198 const char *name, *nspace;
6199 if (image->dynamic)
6200 return g_strdup_printf ("DynamicType 0x%08x", type_token);
6201
6202 switch (type_token & 0xff000000){
6203 case MONO_TOKEN_TYPE_DEF: {
6204 guint32 cols [MONO_TYPEDEF_SIZE];
6205 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
6206 guint tidx = mono_metadata_token_index (type_token);
6207
6208 if (tidx > tt->rows)
6209 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6210
6211 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
6212 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
6213 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
6214 if (strlen (nspace) == 0)
6215 return g_strdup_printf ("%s", name);
6216 else
6217 return g_strdup_printf ("%s.%s", nspace, name);
6218 }
6219
6220 case MONO_TOKEN_TYPE_REF: {
6221 guint32 cols [MONO_TYPEREF_SIZE];
6222 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
6223 guint tidx = mono_metadata_token_index (type_token);
6224
6225 if (tidx > t->rows)
6226 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6227 mono_metadata_decode_row (t, tidx-1, cols, MONO_TYPEREF_SIZE);
6228 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
6229 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
6230 if (strlen (nspace) == 0)
6231 return g_strdup_printf ("%s", name);
6232 else
6233 return g_strdup_printf ("%s.%s", nspace, name);
6234 }
6235
6236 case MONO_TOKEN_TYPE_SPEC:
6237 return g_strdup_printf ("Typespec 0x%08x", type_token);
6238 default:
6239 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6240 }
6241 }
6242
6243 static char *
6244 mono_assembly_name_from_token (MonoImage *image, guint32 type_token)
6245 {
6246 if (image->dynamic)
6247 return g_strdup_printf ("DynamicAssembly %s", image->name);
6248
6249 switch (type_token & 0xff000000){
6250 case MONO_TOKEN_TYPE_DEF:
6251 return mono_stringify_assembly_name (&image->assembly->aname);
6252 break;
6253 case MONO_TOKEN_TYPE_REF: {
6254 MonoAssemblyName aname;
6255 guint32 cols [MONO_TYPEREF_SIZE];
6256 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
6257 guint32 idx = mono_metadata_token_index (type_token);
6258
6259 if (idx > t->rows)
6260 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
6261
6262 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPEREF_SIZE);
6263
6264 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLTION_SCOPE_BITS;
6265 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLTION_SCOPE_MASK) {
6266 case MONO_RESOLTION_SCOPE_MODULE:
6267 /* FIXME: */
6268 return g_strdup ("");
6269 case MONO_RESOLTION_SCOPE_MODULEREF:
6270 /* FIXME: */
6271 return g_strdup ("");
6272 case MONO_RESOLTION_SCOPE_TYPEREF:
6273 /* FIXME: */
6274 return g_strdup ("");
6275 case MONO_RESOLTION_SCOPE_ASSEMBLYREF:
6276 mono_assembly_get_assemblyref (image, idx - 1, &aname);
6277 return mono_stringify_assembly_name (&aname);
6278 default:
6279 g_assert_not_reached ();
6280 }
6281 break;
6282 }
6283 case MONO_TOKEN_TYPE_SPEC:
6284 /* FIXME: */
6285 return g_strdup ("");
6286 default:
6287 g_assert_not_reached ();
6288 }
6289
6290 return NULL;
6291 }
6292
6293 /**
6294 * mono_class_get_full:
6295 * @image: the image where the class resides
6296 * @type_token: the token for the class
6297 * @context: the generic context used to evaluate generic instantiations in
6298 *
6299 * Returns: the MonoClass that represents @type_token in @image
6300 */
6301 MonoClass *
6302 mono_class_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
6303 {
6304 MonoError error;
6305 MonoClass *class = NULL;
6306
6307 if (image->dynamic) {
6308 int table = mono_metadata_token_table (type_token);
6309
6310 if (table != MONO_TABLE_TYPEDEF && table != MONO_TABLE_TYPEREF && table != MONO_TABLE_TYPESPEC) {
6311 mono_loader_set_error_bad_image (g_strdup ("Bad type token."));
6312 return NULL;
6313 }
6314 return mono_lookup_dynamic_token (image, type_token, context);
6315 }
6316
6317 switch (type_token & 0xff000000){
6318 case MONO_TOKEN_TYPE_DEF:
6319 class = mono_class_create_from_typedef (image, type_token);
6320 break;
6321 case MONO_TOKEN_TYPE_REF:
6322 class = mono_class_from_typeref (image, type_token);
6323 break;
6324 case MONO_TOKEN_TYPE_SPEC:
6325 class = mono_class_create_from_typespec (image, type_token, context, &error);
6326 if (!mono_error_ok (&error)) {
6327 /*FIXME don't swallow the error message*/
6328 mono_error_cleanup (&error);
6329 }
6330 break;
6331 default:
6332 g_warning ("unknown token type %x", type_token & 0xff000000);
6333 g_assert_not_reached ();
6334 }
6335
6336 if (!class){
6337 char *name = mono_class_name_from_token (image, type_token);
6338 char *assembly = mono_assembly_name_from_token (image, type_token);
6339 mono_loader_set_error_type_load (name, assembly);
6340 }
6341
6342 return class;
6343 }
6344
6345
6346 /**
6347 * mono_type_get_full:
6348 * @image: the image where the type resides
6349 * @type_token: the token for the type
6350 * @context: the generic context used to evaluate generic instantiations in
6351 *
6352 * This functions exists to fullfill the fact that sometimes it's desirable to have access to the
6353 *
6354 * Returns: the MonoType that represents @type_token in @image
6355 */
6356 MonoType *
6357 mono_type_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
6358 {
6359 MonoError error;
6360 MonoType *type = NULL;
6361 gboolean inflated = FALSE;
6362
6363 //FIXME: this will not fix the very issue for which mono_type_get_full exists -but how to do it then?
6364 if (image->dynamic)
6365 return mono_class_get_type (mono_lookup_dynamic_token (image, type_token, context));
6366
6367 if ((type_token & 0xff000000) != MONO_TOKEN_TYPE_SPEC) {
6368 MonoClass *class = mono_class_get_full (image, type_token, context);
6369 return class ? mono_class_get_type (class) : NULL;
6370 }
6371
6372 type = mono_type_retrieve_from_typespec (image, type_token, context, &inflated, &error);
6373
6374 if (!mono_error_ok (&error)) {
6375 /*FIXME don't swalloc the error message.*/
6376 char *name = mono_class_name_from_token (image, type_token);
6377 char *assembly = mono_assembly_name_from_token (image, type_token);
6378
6379 g_warning ("Error loading type %s from %s due to %s", name, assembly, mono_error_get_message (&error));
6380
6381 mono_error_cleanup (&error);
6382 mono_loader_set_error_type_load (name, assembly);
6383 return NULL;
6384 }
6385
6386 if (inflated) {
6387 MonoType *tmp = type;
6388 type = mono_class_get_type (mono_class_from_mono_type (type));
6389 /* FIXME: This is a workaround fo the fact that a typespec token sometimes reference to the generic type definition.
6390 * A MonoClass::byval_arg of a generic type definion has type CLASS.
6391 * Some parts of mono create a GENERICINST to reference a generic type definition and this generates confict with byval_arg.
6392 *
6393 * The long term solution is to chaise this places and make then set MonoType::type correctly.
6394 * */
6395 if (type->type != tmp->type)
6396 type = tmp;
6397 else
6398 mono_metadata_free_type (tmp);
6399 }
6400 return type;
6401 }
6402
6403
6404 MonoClass *
6405 mono_class_get (MonoImage *image, guint32 type_token)
6406 {
6407 return mono_class_get_full (image, type_token, NULL);
6408 }
6409
6410 /**
6411 * mono_image_init_name_cache:
6412 *
6413 * Initializes the class name cache stored in image->name_cache.
6414 *
6415 * LOCKING: Acquires the corresponding image lock.
6416 */
6417 void
6418 mono_image_init_name_cache (MonoImage *image)
6419 {
6420 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
6421 guint32 cols [MONO_TYPEDEF_SIZE];
6422 const char *name;
6423 const char *nspace;
6424 guint32 i, visib, nspace_index;
6425 GHashTable *name_cache2, *nspace_table;
6426
6427 mono_image_lock (image);
6428
6429 if (image->name_cache) {
6430 mono_image_unlock (image);
6431 return;
6432 }
6433
6434 image->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
6435
6436 if (image->dynamic) {
6437 mono_image_unlock (image);
6438 return;
6439 }
6440
6441 /* Temporary hash table to avoid lookups in the nspace_table */
6442 name_cache2 = g_hash_table_new (NULL, NULL);
6443
6444 for (i = 1; i <= t->rows; ++i) {
6445 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
6446 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
6447 /*
6448 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
6449 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
6450 */
6451 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
6452 continue;
6453 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
6454 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
6455
6456 nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
6457 nspace_table = g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
6458 if (!nspace_table) {
6459 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
6460 g_hash_table_insert (image->name_cache, (char*)nspace, nspace_table);
6461 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
6462 nspace_table);
6463 }
6464 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
6465 }
6466
6467 /* Load type names from EXPORTEDTYPES table */
6468 {
6469 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
6470 guint32 cols [MONO_EXP_TYPE_SIZE];
6471 int i;
6472
6473 for (i = 0; i < t->rows; ++i) {
6474 mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
6475 name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
6476 nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
6477
6478 nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
6479 nspace_table = g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
6480 if (!nspace_table) {
6481 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
6482 g_hash_table_insert (image->name_cache, (char*)nspace, nspace_table);
6483 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
6484 nspace_table);
6485 }
6486 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
6487 }
6488 }
6489
6490 g_hash_table_destroy (name_cache2);
6491 mono_image_unlock (image);
6492 }
6493
6494 /*FIXME Only dynamic assemblies should allow this operation.*/
6495 void
6496 mono_image_add_to_name_cache (MonoImage *image, const char *nspace,
6497 const char *name, guint32 index)
6498 {
6499 GHashTable *nspace_table;
6500 GHashTable *name_cache;
6501 guint32 old_index;
6502
6503 mono_image_lock (image);
6504
6505 if (!image->name_cache)
6506 mono_image_init_name_cache (image);
6507
6508 name_cache = image->name_cache;
6509 if (!(nspace_table = g_hash_table_lookup (name_cache, nspace))) {
6510 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
6511 g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
6512 }
6513
6514 if ((old_index = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, (char*) name))))
6515 g_error ("overrwritting old token %x on image %s for type %s::%s", old_index, image->name, nspace, name);
6516
6517 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
6518
6519 mono_image_unlock (image);
6520 }
6521
6522 typedef struct {
6523 gconstpointer key;
6524 gpointer value;
6525 } FindUserData;
6526
6527 static void
6528 find_nocase (gpointer key, gpointer value, gpointer user_data)
6529 {
6530 char *name = (char*)key;
6531 FindUserData *data = (FindUserData*)user_data;
6532
6533 if (!data->value && (mono_utf8_strcasecmp (name, (char*)data->key) == 0))
6534 data->value = value;
6535 }
6536
6537 /**
6538 * mono_class_from_name_case:
6539 * @image: The MonoImage where the type is looked up in
6540 * @name_space: the type namespace
6541 * @name: the type short name.
6542 *
6543 * Obtains a MonoClass with a given namespace and a given name which
6544 * is located in the given MonoImage. The namespace and name
6545 * lookups are case insensitive.
6546 */
6547 MonoClass *
6548 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
6549 {
6550 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
6551 guint32 cols [MONO_TYPEDEF_SIZE];
6552 const char *n;
6553 const char *nspace;
6554 guint32 i, visib;
6555
6556 if (image->dynamic) {
6557 guint32 token = 0;
6558 FindUserData user_data;
6559
6560 mono_image_lock (image);
6561
6562 if (!image->name_cache)
6563 mono_image_init_name_cache (image);
6564
6565 user_data.key = name_space;
6566 user_data.value = NULL;
6567 g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
6568
6569 if (user_data.value) {
6570 GHashTable *nspace_table = (GHashTable*)user_data.value;
6571
6572 user_data.key = name;
6573 user_data.value = NULL;
6574
6575 g_hash_table_foreach (nspace_table, find_nocase, &user_data);
6576
6577 if (user_data.value)
6578 token = GPOINTER_TO_UINT (user_data.value);
6579 }
6580
6581 mono_image_unlock (image);
6582
6583 if (token)
6584 return mono_class_get (image, MONO_TOKEN_TYPE_DEF | token);
6585 else
6586 return NULL;
6587
6588 }
6589
6590 /* add a cache if needed */
6591 for (i = 1; i <= t->rows; ++i) {
6592 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
6593 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
6594 /*
6595 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
6596 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
6597 */
6598 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
6599 continue;
6600 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
6601 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
6602 if (mono_utf8_strcasecmp (n, name) == 0 && mono_utf8_strcasecmp (nspace, name_space) == 0)
6603 return mono_class_get (image, MONO_TOKEN_TYPE_DEF | i);
6604 }
6605 return NULL;
6606 }
6607
6608 static MonoClass*
6609 return_nested_in (MonoClass *class, char *nested)
6610 {
6611 MonoClass *found;
6612 char *s = strchr (nested, '/');
6613 gpointer iter = NULL;
6614
6615 if (s) {
6616 *s = 0;
6617 s++;
6618 }
6619
6620 while ((found = mono_class_get_nested_types (class, &iter))) {
6621 if (strcmp (found->name, nested) == 0) {
6622 if (s)
6623 return return_nested_in (found, s);
6624 return found;
6625 }
6626 }
6627 return NULL;
6628 }
6629
6630 static MonoClass*
6631 search_modules (MonoImage *image, const char *name_space, const char *name)
6632 {
6633 MonoTableInfo *file_table = &image->tables [MONO_TABLE_FILE];
6634 MonoImage *file_image;
6635 MonoClass *class;
6636 int i;
6637
6638 /*
6639 * The EXPORTEDTYPES table only contains public types, so have to search the
6640 * modules as well.
6641 * Note: image->modules contains the contents of the MODULEREF table, while
6642 * the real module list is in the FILE table.
6643 */
6644 for (i = 0; i < file_table->rows; i++) {
6645 guint32 cols [MONO_FILE_SIZE];
6646 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
6647 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
6648 continue;
6649
6650 file_image = mono_image_load_file_for_image (image, i + 1);
6651 if (file_image) {
6652 class = mono_class_from_name (file_image, name_space, name);
6653 if (class)
6654 return class;
6655 }
6656 }
6657
6658 return NULL;
6659 }
6660
6661 /**
6662 * mono_class_from_name:
6663 * @image: The MonoImage where the type is looked up in
6664 * @name_space: the type namespace
6665 * @name: the type short name.
6666 *
6667 * Obtains a MonoClass with a given namespace and a given name which
6668 * is located in the given MonoImage.
6669 */
6670 MonoClass *
6671 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
6672 {
6673 GHashTable *nspace_table;
6674 MonoImage *loaded_image;
6675 guint32 token = 0;
6676 int i;
6677 MonoClass *class;
6678 char *nested;
6679 char buf [1024];
6680
6681 if ((nested = strchr (name, '/'))) {
6682 int pos = nested - name;
6683 int len = strlen (name);
6684 if (len > 1023)
6685 return NULL;
6686 memcpy (buf, name, len + 1);
6687 buf [pos] = 0;
6688 nested = buf + pos + 1;
6689 name = buf;
6690 }
6691
6692 if (get_class_from_name) {
6693 gboolean res = get_class_from_name (image, name_space, name, &class);
6694 if (res) {
6695 if (!class)
6696 class = search_modules (image, name_space, name);
6697 if (nested)
6698 return class ? return_nested_in (class, nested) : NULL;
6699 else
6700 return class;
6701 }
6702 }
6703
6704 mono_image_lock (image);
6705
6706 if (!image->name_cache)
6707 mono_image_init_name_cache (image);
6708
6709 nspace_table = g_hash_table_lookup (image->name_cache, name_space);
6710
6711 if (nspace_table)
6712 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
6713
6714 mono_image_unlock (image);
6715
6716 if (!token && image->dynamic && image->modules) {
6717 /* Search modules as well */
6718 for (i = 0; i < image->module_count; ++i) {
6719 MonoImage *module = image->modules [i];
6720
6721 class = mono_class_from_name (module, name_space, name);
6722 if (class)
6723 return class;
6724 }
6725 }
6726
6727 if (!token) {
6728 class = search_modules (image, name_space, name);
6729 if (class)
6730 return class;
6731 }
6732
6733 if (!token)
6734 return NULL;
6735
6736 if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
6737 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
6738 guint32 cols [MONO_EXP_TYPE_SIZE];
6739 guint32 idx, impl;
6740
6741 idx = mono_metadata_token_index (token);
6742
6743 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
6744
6745 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
6746 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
6747 loaded_image = mono_assembly_load_module (image->assembly, impl >> MONO_IMPLEMENTATION_BITS);
6748 if (!loaded_image)
6749 return NULL;
6750 class = mono_class_from_name (loaded_image, name_space, name);
6751 if (nested)
6752 return return_nested_in (class, nested);
6753 return class;
6754 } else if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
6755 guint32 assembly_idx;
6756
6757 assembly_idx = impl >> MONO_IMPLEMENTATION_BITS;
6758
6759 mono_assembly_load_reference (image, assembly_idx - 1);
6760 g_assert (image->references [assembly_idx - 1]);
6761 if (image->references [assembly_idx - 1] == (gpointer)-1)
6762 return NULL;
6763 else
6764 /* FIXME: Cycle detection */
6765 return mono_class_from_name (image->references [assembly_idx - 1]->image, name_space, name);
6766 } else {
6767 g_error ("not yet implemented");
6768 }
6769 }
6770
6771 token = MONO_TOKEN_TYPE_DEF | token;
6772
6773 class = mono_class_get (image, token);
6774 if (nested)
6775 return return_nested_in (class, nested);
6776 return class;
6777 }
6778
6779 /*FIXME test for interfaces with variant generic arguments*/
6780 gboolean
6781 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
6782 gboolean check_interfaces)
6783 {
6784 g_assert (klassc->idepth > 0);
6785 if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && !MONO_CLASS_IS_INTERFACE (klass)) {
6786 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, klassc->interface_id))
6787 return TRUE;
6788 } else if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && MONO_CLASS_IS_INTERFACE (klass)) {
6789 int i;
6790
6791 for (i = 0; i < klass->interface_count; i ++) {
6792 MonoClass *ic = klass->interfaces [i];
6793 if (ic == klassc)
6794 return TRUE;
6795 }
6796 } else {
6797 if (!MONO_CLASS_IS_INTERFACE (klass) && mono_class_has_parent (klass, klassc))
6798 return TRUE;
6799 }
6800
6801 /*
6802 * MS.NET thinks interfaces are a subclass of Object, so we think it as
6803 * well.
6804 */
6805 if (klassc == mono_defaults.object_class)
6806 return TRUE;
6807
6808 return FALSE;
6809 }
6810
6811 gboolean
6812 mono_class_has_variant_generic_params (MonoClass *klass)
6813 {
6814 int i;
6815 MonoGenericContainer *container;
6816
6817 if (!klass->generic_class)
6818 return FALSE;
6819
6820 container = klass->generic_class->container_class->generic_container;
6821
6822 for (i = 0; i < container->type_argc; ++i)
6823 if (mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT))
6824 return TRUE;
6825
6826 return FALSE;
6827 }
6828
6829 /**
6830 * @container the generic container from the GTD
6831 * @klass: the class to be assigned to
6832 * @oklass: the source class
6833 *
6834 * Both klass and oklass must be instances of the same generic interface.
6835 * Return true if @klass can be assigned to a @klass variable
6836 */
6837 static gboolean
6838 mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass)
6839 {
6840 int j;
6841 MonoType **klass_argv, **oklass_argv;
6842 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
6843 MonoGenericContainer *container = klass_gtd->generic_container;
6844
6845 /*Viable candidates are instances of the same generic interface*/
6846 if (mono_class_get_generic_type_definition (oklass) != klass_gtd)
6847 return FALSE;
6848
6849 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
6850 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
6851
6852 for (j = 0; j < container->type_argc; ++j) {
6853 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
6854 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
6855
6856 if (param1_class->valuetype != param2_class->valuetype)
6857 return FALSE;
6858
6859 /*
6860 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
6861 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
6862 */
6863 if (param1_class != param2_class) {
6864 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
6865 if (!mono_class_is_assignable_from (param1_class, param2_class))
6866 return FALSE;
6867 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
6868 if (!mono_class_is_assignable_from (param2_class, param1_class))
6869 return FALSE;
6870 } else
6871 return FALSE;
6872 }
6873 }
6874 return TRUE;
6875 }
6876
6877 /**
6878 * mono_class_is_assignable_from:
6879 * @klass: the class to be assigned to
6880 * @oklass: the source class
6881 *
6882 * Return: true if an instance of object oklass can be assigned to an
6883 * instance of object @klass
6884 */
6885 gboolean
6886 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
6887 {
6888 if (!klass->inited)
6889 mono_class_init (klass);
6890
6891 if (!oklass->inited)
6892 mono_class_init (oklass);
6893
6894 if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR))
6895 return klass == oklass;
6896
6897 if (MONO_CLASS_IS_INTERFACE (klass)) {
6898 if ((oklass->byval_arg.type == MONO_TYPE_VAR) || (oklass->byval_arg.type == MONO_TYPE_MVAR))
6899 return FALSE;
6900
6901 /* interface_offsets might not be set for dynamic classes */
6902 if (oklass->ref_info_handle && !oklass->interface_bitmap)
6903 /*
6904 * oklass might be a generic type parameter but they have
6905 * interface_offsets set.
6906 */
6907 return mono_reflection_call_is_assignable_to (oklass, klass);
6908 if (!oklass->interface_bitmap)
6909 /* Happens with generic instances of not-yet created dynamic types */
6910 return FALSE;
6911 if (MONO_CLASS_IMPLEMENTS_INTERFACE (oklass, klass->interface_id))
6912 return TRUE;
6913
6914 if (mono_class_has_variant_generic_params (klass)) {
6915 MonoError error;
6916 int i;
6917 mono_class_setup_interfaces (oklass, &error);
6918 if (!mono_error_ok (&error)) {
6919 mono_error_cleanup (&error);
6920 return FALSE;
6921 }
6922
6923 /*klass is a generic variant interface, We need to extract from oklass a list of ifaces which are viable candidates.*/
6924 for (i = 0; i < oklass->interface_offsets_count; ++i) {
6925 MonoClass *iface = oklass->interfaces_packed [i];
6926
6927 if (mono_class_is_variant_compatible (klass, iface))
6928 return TRUE;
6929 }
6930 }
6931 return FALSE;
6932 } else if (klass->delegate) {
6933 if (mono_class_has_variant_generic_params (klass) && mono_class_is_variant_compatible (klass, oklass))
6934 return TRUE;
6935 }else if (klass->rank) {
6936 MonoClass *eclass, *eoclass;
6937
6938 if (oklass->rank != klass->rank)
6939 return FALSE;
6940
6941 /* vectors vs. one dimensional arrays */
6942 if (oklass->byval_arg.type != klass->byval_arg.type)
6943 return FALSE;
6944
6945 eclass = klass->cast_class;
6946 eoclass = oklass->cast_class;
6947
6948 /*
6949 * a is b does not imply a[] is b[] when a is a valuetype, and
6950 * b is a reference type.
6951 */
6952
6953 if (eoclass->valuetype) {
6954 if ((eclass == mono_defaults.enum_class) ||
6955 (eclass == mono_defaults.enum_class->parent) ||
6956 (eclass == mono_defaults.object_class))
6957 return FALSE;
6958 }
6959
6960 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
6961 } else if (mono_class_is_nullable (klass)) {
6962 if (mono_class_is_nullable (oklass))
6963 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
6964 else
6965 return mono_class_is_assignable_from (klass->cast_class, oklass);
6966 } else if (klass == mono_defaults.object_class)
6967 return TRUE;
6968
6969 return mono_class_has_parent (oklass, klass);
6970 }
6971
6972 /*Check if @oklass is variant compatible with @klass.*/
6973 static gboolean
6974 mono_class_is_variant_compatible_slow (MonoClass *klass, MonoClass *oklass)
6975 {
6976 int j;
6977 MonoType **klass_argv, **oklass_argv;
6978 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
6979 MonoGenericContainer *container = klass_gtd->generic_container;
6980
6981 /*Viable candidates are instances of the same generic interface*/
6982 if (mono_class_get_generic_type_definition (oklass) != klass_gtd)
6983 return FALSE;
6984
6985 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
6986 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
6987
6988 for (j = 0; j < container->type_argc; ++j) {
6989 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
6990 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
6991
6992 if (param1_class->valuetype != param2_class->valuetype)
6993 return FALSE;
6994
6995 /*
6996 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
6997 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
6998 */
6999 if (param1_class != param2_class) {
7000 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
7001 if (!mono_class_is_assignable_from_slow (param1_class, param2_class))
7002 return FALSE;
7003 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
7004 if (!mono_class_is_assignable_from_slow (param2_class, param1_class))
7005 return FALSE;
7006 } else
7007 return FALSE;
7008 }
7009 }
7010 return TRUE;
7011 }
7012 /*Check if @candidate implements the interface @target*/
7013 static gboolean
7014 mono_class_implement_interface_slow (MonoClass *target, MonoClass *candidate)
7015 {
7016 MonoError error;
7017 int i;
7018 gboolean is_variant = mono_class_has_variant_generic_params (target);
7019
7020 if (is_variant && MONO_CLASS_IS_INTERFACE (candidate)) {
7021 if (mono_class_is_variant_compatible_slow (target, candidate))
7022 return TRUE;
7023 }
7024
7025 do {
7026 if (candidate == target)
7027 return TRUE;
7028
7029 /*A TypeBuilder can have more interfaces on tb->interfaces than on candidate->interfaces*/
7030 if (candidate->image->dynamic && !candidate->wastypebuilder) {
7031 MonoReflectionTypeBuilder *tb = mono_class_get_ref_info (candidate);
7032 int j;
7033 if (tb && tb->interfaces) {
7034 for (j = mono_array_length (tb->interfaces) - 1; j >= 0; --j) {
7035 MonoReflectionType *iface = mono_array_get (tb->interfaces, MonoReflectionType*, j);
7036 MonoClass *iface_class = mono_class_from_mono_type (iface->type);
7037 if (iface_class == target)
7038 return TRUE;
7039 if (is_variant && mono_class_is_variant_compatible_slow (target, iface_class))
7040 return TRUE;
7041 if (mono_class_implement_interface_slow (target, iface_class))
7042 return TRUE;
7043 }
7044 }
7045 } else {
7046 /*setup_interfaces don't mono_class_init anything*/
7047 mono_class_setup_interfaces (candidate, &error);
7048 if (!mono_error_ok (&error)) {
7049 mono_error_cleanup (&error);
7050 return FALSE;
7051 }
7052
7053 for (i = 0; i < candidate->interface_count; ++i) {
7054 if (candidate->interfaces [i] == target)
7055 return TRUE;
7056
7057 if (is_variant && mono_class_is_variant_compatible_slow (target, candidate->interfaces [i]))
7058 return TRUE;
7059
7060 if (mono_class_implement_interface_slow (target, candidate->interfaces [i]))
7061 return TRUE;
7062 }
7063 }
7064 candidate = candidate->parent;
7065 } while (candidate);
7066
7067 return FALSE;
7068 }
7069
7070 /*
7071 * Check if @oklass can be assigned to @klass.
7072 * This function does the same as mono_class_is_assignable_from but is safe to be used from mono_class_init context.
7073 */
7074 gboolean
7075 mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate)
7076 {
7077 if (candidate == target)
7078 return TRUE;
7079 if (target == mono_defaults.object_class)
7080 return TRUE;
7081
7082 /*setup_supertypes don't mono_class_init anything */
7083 mono_class_setup_supertypes (candidate);
7084 mono_class_setup_supertypes (target);
7085
7086 if (mono_class_has_parent (candidate, target))
7087 return TRUE;
7088
7089 /*If target is not an interface there is no need to check them.*/
7090 if (MONO_CLASS_IS_INTERFACE (target))
7091 return mono_class_implement_interface_slow (target, candidate);
7092
7093 if (target->delegate && mono_class_has_variant_generic_params (target))
7094 return mono_class_is_variant_compatible (target, candidate);
7095
7096 /*FIXME properly handle nullables and arrays */
7097
7098 return FALSE;
7099 }
7100
7101 /**
7102 * mono_class_get_cctor:
7103 * @klass: A MonoClass pointer
7104 *
7105 * Returns: the static constructor of @klass if it exists, NULL otherwise.
7106 */
7107 MonoMethod*
7108 mono_class_get_cctor (MonoClass *klass)
7109 {
7110 MonoCachedClassInfo cached_info;
7111
7112 if (klass->image->dynamic) {
7113 /*
7114 * has_cctor is not set for these classes because mono_class_init () is
7115 * not run for them.
7116 */
7117 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
7118 }
7119
7120 if (!klass->has_cctor)
7121 return NULL;
7122
7123 if (mono_class_get_cached_class_info (klass, &cached_info))
7124 return mono_get_method (klass->image, cached_info.cctor_token, klass);
7125
7126 if (klass->generic_class && !klass->methods)
7127 return mono_class_get_inflated_method (klass, mono_class_get_cctor (klass->generic_class->container_class));
7128
7129 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
7130 }
7131
7132 /**
7133 * mono_class_get_finalizer:
7134 * @klass: The MonoClass pointer
7135 *
7136 * Returns: the finalizer method of @klass if it exists, NULL otherwise.
7137 */
7138 MonoMethod*
7139 mono_class_get_finalizer (MonoClass *klass)
7140 {
7141 MonoCachedClassInfo cached_info;
7142
7143 if (!klass->inited)
7144 mono_class_init (klass);
7145 if (!klass->has_finalize)
7146 return NULL;
7147
7148 if (mono_class_get_cached_class_info (klass, &cached_info))
7149 return mono_get_method (cached_info.finalize_image, cached_info.finalize_token, NULL);
7150 else {
7151 mono_class_setup_vtable (klass);
7152 return klass->vtable [finalize_slot];
7153 }
7154 }
7155
7156 /**
7157 * mono_class_needs_cctor_run:
7158 * @klass: the MonoClass pointer
7159 * @caller: a MonoMethod describing the caller
7160 *
7161 * Determines whenever the class has a static constructor and whenever it
7162 * needs to be called when executing CALLER.
7163 */
7164 gboolean
7165 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
7166 {
7167 MonoMethod *method;
7168
7169 method = mono_class_get_cctor (klass);
7170 if (method)
7171 return (method == caller) ? FALSE : TRUE;
7172 else
7173 return FALSE;
7174 }
7175
7176 /**
7177 * mono_class_array_element_size:
7178 * @klass:
7179 *
7180 * Returns: the number of bytes an element of type @klass
7181 * uses when stored into an array.
7182 */
7183 gint32
7184 mono_class_array_element_size (MonoClass *klass)
7185 {
7186 MonoType *type = &klass->byval_arg;
7187
7188 handle_enum:
7189 switch (type->type) {
7190 case MONO_TYPE_I1:
7191 case MONO_TYPE_U1:
7192 case MONO_TYPE_BOOLEAN:
7193 return 1;
7194 case MONO_TYPE_I2:
7195 case MONO_TYPE_U2:
7196 case MONO_TYPE_CHAR:
7197 return 2;
7198 case MONO_TYPE_I4:
7199 case MONO_TYPE_U4:
7200 case MONO_TYPE_R4:
7201 return 4;
7202 case MONO_TYPE_I:
7203 case MONO_TYPE_U:
7204 case MONO_TYPE_PTR:
7205 case MONO_TYPE_CLASS:
7206 case MONO_TYPE_STRING:
7207 case MONO_TYPE_OBJECT:
7208 case MONO_TYPE_SZARRAY:
7209 case MONO_TYPE_ARRAY:
7210 case MONO_TYPE_VAR:
7211 case MONO_TYPE_MVAR:
7212 return sizeof (gpointer);
7213 case MONO_TYPE_I8:
7214 case MONO_TYPE_U8:
7215 case MONO_TYPE_R8:
7216 return 8;
7217 case MONO_TYPE_VALUETYPE:
7218 if (type->data.klass->enumtype) {
7219 type = mono_class_enum_basetype (type->data.klass);
7220 klass = klass->element_class;
7221 goto handle_enum;
7222 }
7223 return mono_class_instance_size (klass) - sizeof (MonoObject);
7224 case MONO_TYPE_GENERICINST:
7225 type = &type->data.generic_class->container_class->byval_arg;
7226 goto handle_enum;
7227
7228 case MONO_TYPE_VOID:
7229 return 0;
7230
7231 default:
7232 g_error ("unknown type 0x%02x in mono_class_array_element_size", type->type);
7233 }
7234 return -1;
7235 }
7236
7237 /**
7238 * mono_array_element_size:
7239 * @ac: pointer to a #MonoArrayClass
7240 *
7241 * Returns: the size of single array element.
7242 */
7243 gint32
7244 mono_array_element_size (MonoClass *ac)
7245 {
7246 g_assert (ac->rank);
7247 return ac->sizes.element_size;
7248 }
7249
7250 gpointer
7251 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class,
7252 MonoGenericContext *context)
7253 {
7254 if (image->dynamic) {
7255 MonoClass *tmp_handle_class;
7256 gpointer obj = mono_lookup_dynamic_token_class (image, token, TRUE, &tmp_handle_class, context);
7257
7258 g_assert (tmp_handle_class);
7259 if (handle_class)
7260 *handle_class = tmp_handle_class;
7261
7262 if (tmp_handle_class == mono_defaults.typehandle_class)
7263 return &((MonoClass*)obj)->byval_arg;
7264 else
7265 return obj;
7266 }
7267
7268 switch (token & 0xff000000) {
7269 case MONO_TOKEN_TYPE_DEF:
7270 case MONO_TOKEN_TYPE_REF:
7271 case MONO_TOKEN_TYPE_SPEC: {
7272 MonoType *type;
7273 if (handle_class)
7274 *handle_class = mono_defaults.typehandle_class;
7275 type = mono_type_get_full (image, token, context);
7276 if (!type)
7277 return NULL;
7278 mono_class_init (mono_class_from_mono_type (type));
7279 /* We return a MonoType* as handle */
7280 return type;
7281 }
7282 case MONO_TOKEN_FIELD_DEF: {
7283 MonoClass *class;
7284 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
7285 if (!type)
7286 return NULL;
7287 if (handle_class)
7288 *handle_class = mono_defaults.fieldhandle_class;
7289 class = mono_class_get_full (image, MONO_TOKEN_TYPE_DEF | type, context);
7290 if (!class)
7291 return NULL;
7292 mono_class_init (class);
7293 return mono_class_get_field (class, token);
7294 }
7295 case MONO_TOKEN_METHOD_DEF:
7296 case MONO_TOKEN_METHOD_SPEC: {
7297 MonoMethod *meth;
7298 meth = mono_get_method_full (image, token, NULL, context);
7299 if (handle_class)
7300 *handle_class = mono_defaults.methodhandle_class;
7301 return meth;
7302 }
7303 case MONO_TOKEN_MEMBER_REF: {
7304 guint32 cols [MONO_MEMBERREF_SIZE];
7305 const char *sig;
7306 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
7307 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
7308 mono_metadata_decode_blob_size (sig, &sig);
7309 if (*sig == 0x6) { /* it's a field */
7310 MonoClass *klass;
7311 MonoClassField *field;
7312 field = mono_field_from_token (image, token, &klass, context);
7313 if (handle_class)
7314 *handle_class = mono_defaults.fieldhandle_class;
7315 return field;
7316 } else {
7317 MonoMethod *meth;
7318 meth = mono_get_method_full (image, token, NULL, context);
7319 if (handle_class)
7320 *handle_class = mono_defaults.methodhandle_class;
7321 return meth;
7322 }
7323 }
7324 default:
7325 g_warning ("Unknown token 0x%08x in ldtoken", token);
7326 break;
7327 }
7328 return NULL;
7329 }
7330
7331 /**
7332 * This function might need to call runtime functions so it can't be part
7333 * of the metadata library.
7334 */
7335 static MonoLookupDynamicToken lookup_dynamic = NULL;
7336
7337 void
7338 mono_install_lookup_dynamic_token (MonoLookupDynamicToken func)
7339 {
7340 lookup_dynamic = func;
7341 }
7342
7343 gpointer
7344 mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context)
7345 {
7346 MonoClass *handle_class;
7347
7348 return lookup_dynamic (image, token, TRUE, &handle_class, context);
7349 }
7350
7351 gpointer
7352 mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context)
7353 {
7354 return lookup_dynamic (image, token, valid_token, handle_class, context);
7355 }
7356
7357 static MonoGetCachedClassInfo get_cached_class_info = NULL;
7358
7359 void
7360 mono_install_get_cached_class_info (MonoGetCachedClassInfo func)
7361 {
7362 get_cached_class_info = func;
7363 }
7364
7365 static gboolean
7366 mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
7367 {
7368 if (!get_cached_class_info)
7369 return FALSE;
7370 else
7371 return get_cached_class_info (klass, res);
7372 }
7373
7374 void
7375 mono_install_get_class_from_name (MonoGetClassFromName func)
7376 {
7377 get_class_from_name = func;
7378 }
7379
7380 MonoImage*
7381 mono_class_get_image (MonoClass *klass)
7382 {
7383 return klass->image;
7384 }
7385
7386 /**
7387 * mono_class_get_element_class:
7388 * @klass: the MonoClass to act on
7389 *
7390 * Returns: the element class of an array or an enumeration.
7391 */
7392 MonoClass*
7393 mono_class_get_element_class (MonoClass *klass)
7394 {
7395 return klass->element_class;
7396 }
7397
7398 /**
7399 * mono_class_is_valuetype:
7400 * @klass: the MonoClass to act on
7401 *
7402 * Returns: true if the MonoClass represents a ValueType.
7403 */
7404 gboolean
7405 mono_class_is_valuetype (MonoClass *klass)
7406 {
7407 return klass->valuetype;
7408 }
7409
7410 /**
7411 * mono_class_is_enum:
7412 * @klass: the MonoClass to act on
7413 *
7414 * Returns: true if the MonoClass represents an enumeration.
7415 */
7416 gboolean
7417 mono_class_is_enum (MonoClass *klass)
7418 {
7419 return klass->enumtype;
7420 }
7421
7422 /**
7423 * mono_class_enum_basetype:
7424 * @klass: the MonoClass to act on
7425 *
7426 * Returns: the underlying type representation for an enumeration.
7427 */
7428 MonoType*
7429 mono_class_enum_basetype (MonoClass *klass)
7430 {
7431 if (klass->element_class == klass)
7432 /* SRE or broken types */
7433 return NULL;
7434 else
7435 return &klass->element_class->byval_arg;
7436 }
7437
7438 /**
7439 * mono_class_get_parent
7440 * @klass: the MonoClass to act on
7441 *
7442 * Returns: the parent class for this class.
7443 */
7444 MonoClass*
7445 mono_class_get_parent (MonoClass *klass)
7446 {
7447 return klass->parent;
7448 }
7449
7450 /**
7451 * mono_class_get_nesting_type;
7452 * @klass: the MonoClass to act on
7453 *
7454 * Returns: the container type where this type is nested or NULL if this type is not a nested type.
7455 */
7456 MonoClass*
7457 mono_class_get_nesting_type (MonoClass *klass)
7458 {
7459 return klass->nested_in;
7460 }
7461
7462 /**
7463 * mono_class_get_rank:
7464 * @klass: the MonoClass to act on
7465 *
7466 * Returns: the rank for the array (the number of dimensions).
7467 */
7468 int
7469 mono_class_get_rank (MonoClass *klass)
7470 {
7471 return klass->rank;
7472 }
7473
7474 /**
7475 * mono_class_get_flags:
7476 * @klass: the MonoClass to act on
7477 *
7478 * The type flags from the TypeDef table from the metadata.
7479 * see the TYPE_ATTRIBUTE_* definitions on tabledefs.h for the
7480 * different values.
7481 *
7482 * Returns: the flags from the TypeDef table.
7483 */
7484 guint32
7485 mono_class_get_flags (MonoClass *klass)
7486 {
7487 return klass->flags;
7488 }
7489
7490 /**
7491 * mono_class_get_name
7492 * @klass: the MonoClass to act on
7493 *
7494 * Returns: the name of the class.
7495 */
7496 const char*
7497 mono_class_get_name (MonoClass *klass)
7498 {
7499 return klass->name;
7500 }
7501
7502 /**
7503 * mono_class_get_namespace:
7504 * @klass: the MonoClass to act on
7505 *
7506 * Returns: the namespace of the class.
7507 */
7508 const char*
7509 mono_class_get_namespace (MonoClass *klass)
7510 {
7511 return klass->name_space;
7512 }
7513
7514 /**
7515 * mono_class_get_type:
7516 * @klass: the MonoClass to act on
7517 *
7518 * This method returns the internal Type representation for the class.
7519 *
7520 * Returns: the MonoType from the class.
7521 */
7522 MonoType*
7523 mono_class_get_type (MonoClass *klass)
7524 {
7525 return &klass->byval_arg;
7526 }
7527
7528 /**
7529 * mono_class_get_type_token
7530 * @klass: the MonoClass to act on
7531 *
7532 * This method returns type token for the class.
7533 *
7534 * Returns: the type token for the class.
7535 */
7536 guint32
7537 mono_class_get_type_token (MonoClass *klass)
7538 {
7539 return klass->type_token;
7540 }
7541
7542 /**
7543 * mono_class_get_byref_type:
7544 * @klass: the MonoClass to act on
7545 *
7546 *
7547 */
7548 MonoType*
7549 mono_class_get_byref_type (MonoClass *klass)
7550 {
7551 return &klass->this_arg;
7552 }
7553
7554 /**
7555 * mono_class_num_fields:
7556 * @klass: the MonoClass to act on
7557 *
7558 * Returns: the number of static and instance fields in the class.
7559 */
7560 int
7561 mono_class_num_fields (MonoClass *klass)
7562 {
7563 return klass->field.count;
7564 }
7565
7566 /**
7567 * mono_class_num_methods:
7568 * @klass: the MonoClass to act on
7569 *
7570 * Returns: the number of methods in the class.
7571 */
7572 int
7573 mono_class_num_methods (MonoClass *klass)
7574 {
7575 return klass->method.count;
7576 }
7577
7578 /**
7579 * mono_class_num_properties
7580 * @klass: the MonoClass to act on
7581 *
7582 * Returns: the number of properties in the class.
7583 */
7584 int
7585 mono_class_num_properties (MonoClass *klass)
7586 {
7587 mono_class_setup_properties (klass);
7588
7589 return klass->ext->property.count;
7590 }
7591
7592 /**
7593 * mono_class_num_events:
7594 * @klass: the MonoClass to act on
7595 *
7596 * Returns: the number of events in the class.
7597 */
7598 int
7599 mono_class_num_events (MonoClass *klass)
7600 {
7601 mono_class_setup_events (klass);
7602
7603 return klass->ext->event.count;
7604 }
7605
7606 /**
7607 * mono_class_get_fields:
7608 * @klass: the MonoClass to act on
7609 *
7610 * This routine is an iterator routine for retrieving the fields in a class.
7611 *
7612 * You must pass a gpointer that points to zero and is treated as an opaque handle to
7613 * iterate over all of the elements. When no more values are
7614 * available, the return value is NULL.
7615 *
7616 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
7617 */
7618 MonoClassField*
7619 mono_class_get_fields (MonoClass* klass, gpointer *iter)
7620 {
7621 MonoClassField* field;
7622 if (!iter)
7623 return NULL;
7624 if (!*iter) {
7625 mono_class_setup_fields_locking (klass);
7626 if (klass->exception_type)
7627 return NULL;
7628 /* start from the first */
7629 if (klass->field.count) {
7630 return *iter = &klass->fields [0];
7631 } else {
7632 /* no fields */
7633 return NULL;
7634 }
7635 }
7636 field = *iter;
7637 field++;
7638 if (field < &klass->fields [klass->field.count]) {
7639 return *iter = field;
7640 }
7641 return NULL;
7642 }
7643
7644 /**
7645 * mono_class_get_methods
7646 * @klass: the MonoClass to act on
7647 *
7648 * This routine is an iterator routine for retrieving the fields in a class.
7649 *
7650 * You must pass a gpointer that points to zero and is treated as an opaque handle to
7651 * iterate over all of the elements. When no more values are
7652 * available, the return value is NULL.
7653 *
7654 * Returns: a MonoMethod on each iteration or NULL when no more methods are available.
7655 */
7656 MonoMethod*
7657 mono_class_get_methods (MonoClass* klass, gpointer *iter)
7658 {
7659 MonoMethod** method;
7660 if (!iter)
7661 return NULL;
7662 if (!klass->inited)
7663 mono_class_init (klass);
7664 if (!*iter) {
7665 mono_class_setup_methods (klass);
7666
7667 /*
7668 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
7669 * FIXME we should better report this error to the caller
7670 */
7671 if (!klass->methods)
7672 return NULL;
7673 /* start from the first */
7674 if (klass->method.count) {
7675 *iter = &klass->methods [0];
7676 return klass->methods [0];
7677 } else {
7678 /* no method */
7679 return NULL;
7680 }
7681 }
7682 method = *iter;
7683 method++;
7684 if (method < &klass->methods [klass->method.count]) {
7685 *iter = method;
7686 return *method;
7687 }
7688 return NULL;
7689 }
7690
7691 /*
7692 * mono_class_get_virtual_methods:
7693 *
7694 * Iterate over the virtual methods of KLASS.
7695 *
7696 * LOCKING: Assumes the loader lock is held (because of the klass->methods check).
7697 */
7698 static MonoMethod*
7699 mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter)
7700 {
7701 MonoMethod** method;
7702 if (!iter)
7703 return NULL;
7704 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass) || mono_debug_using_mono_debugger ()) {
7705 if (!*iter) {
7706 mono_class_setup_methods (klass);
7707 /*
7708 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
7709 * FIXME we should better report this error to the caller
7710 */
7711 if (!klass->methods)
7712 return NULL;
7713 /* start from the first */
7714 method = &klass->methods [0];
7715 } else {
7716 method = *iter;
7717 method++;
7718 }
7719 while (method < &klass->methods [klass->method.count]) {
7720 if (((*method)->flags & METHOD_ATTRIBUTE_VIRTUAL))
7721 break;
7722 method ++;
7723 }
7724 if (method < &klass->methods [klass->method.count]) {
7725 *iter = method;
7726 return *method;
7727 } else {
7728 return NULL;
7729 }
7730 } else {
7731 /* Search directly in metadata to avoid calling setup_methods () */
7732 MonoMethod *res = NULL;
7733 int i, start_index;
7734
7735 if (!*iter) {
7736 start_index = 0;
7737 } else {
7738 start_index = GPOINTER_TO_UINT (*iter);
7739 }
7740
7741 for (i = start_index; i < klass->method.count; ++i) {
7742 guint32 flags;
7743
7744 /* class->method.first points into the methodptr table */
7745 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, klass->method.first + i, MONO_METHOD_FLAGS);
7746
7747 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
7748 break;
7749 }
7750
7751 if (i < klass->method.count) {
7752 res = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
7753 /* Add 1 here so the if (*iter) check fails */
7754 *iter = GUINT_TO_POINTER (i + 1);
7755 return res;
7756 } else {
7757 return NULL;
7758 }
7759 }
7760 }
7761
7762 /**
7763 * mono_class_get_properties:
7764 * @klass: the MonoClass to act on
7765 *
7766 * This routine is an iterator routine for retrieving the properties in a class.
7767 *
7768 * You must pass a gpointer that points to zero and is treated as an opaque handle to
7769 * iterate over all of the elements. When no more values are
7770 * available, the return value is NULL.
7771 *
7772 * Returns: a @MonoProperty* on each invocation, or NULL when no more are available.
7773 */
7774 MonoProperty*
7775 mono_class_get_properties (MonoClass* klass, gpointer *iter)
7776 {
7777 MonoProperty* property;
7778 if (!iter)
7779 return NULL;
7780 if (!klass->inited)
7781 mono_class_init (klass);
7782 if (!*iter) {
7783 mono_class_setup_properties (klass);
7784 /* start from the first */
7785 if (klass->ext->property.count) {
7786 return *iter = &klass->ext->properties [0];
7787 } else {
7788 /* no fields */
7789 return NULL;
7790 }
7791 }
7792 property = *iter;
7793 property++;
7794 if (property < &klass->ext->properties [klass->ext->property.count]) {
7795 return *iter = property;
7796 }
7797 return NULL;
7798 }
7799
7800 /**
7801 * mono_class_get_events:
7802 * @klass: the MonoClass to act on
7803 *
7804 * This routine is an iterator routine for retrieving the properties in a class.
7805 *
7806 * You must pass a gpointer that points to zero and is treated as an opaque handle to
7807 * iterate over all of the elements. When no more values are
7808 * available, the return value is NULL.
7809 *
7810 * Returns: a @MonoEvent* on each invocation, or NULL when no more are available.
7811 */
7812 MonoEvent*
7813 mono_class_get_events (MonoClass* klass, gpointer *iter)
7814 {
7815 MonoEvent* event;
7816 if (!iter)
7817 return NULL;
7818 if (!klass->inited)
7819 mono_class_init (klass);
7820 if (!*iter) {
7821 mono_class_setup_events (klass);
7822 /* start from the first */
7823 if (klass->ext->event.count) {
7824 return *iter = &klass->ext->events [0];
7825 } else {
7826 /* no fields */
7827 return NULL;
7828 }
7829 }
7830 event = *iter;
7831 event++;
7832 if (event < &klass->ext->events [klass->ext->event.count]) {
7833 return *iter = event;
7834 }
7835 return NULL;
7836 }
7837
7838 /**
7839 * mono_class_get_interfaces
7840 * @klass: the MonoClass to act on
7841 *
7842 * This routine is an iterator routine for retrieving the interfaces implemented by this class.
7843 *
7844 * You must pass a gpointer that points to zero and is treated as an opaque handle to
7845 * iterate over all of the elements. When no more values are
7846 * available, the return value is NULL.
7847 *
7848 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
7849 */
7850 MonoClass*
7851 mono_class_get_interfaces (MonoClass* klass, gpointer *iter)
7852 {
7853 MonoError error;
7854 MonoClass** iface;
7855 if (!iter)
7856 return NULL;
7857 if (!*iter) {
7858 if (!klass->inited)
7859 mono_class_init (klass);
7860 if (!klass->interfaces_inited) {
7861 mono_class_setup_interfaces (klass, &error);
7862 if (!mono_error_ok (&error)) {
7863 mono_error_cleanup (&error);
7864 return NULL;
7865 }
7866 }
7867 /* start from the first */
7868 if (klass->interface_count) {
7869 *iter = &klass->interfaces [0];
7870 return klass->interfaces [0];
7871 } else {
7872 /* no interface */
7873 return NULL;
7874 }
7875 }
7876 iface = *iter;
7877 iface++;
7878 if (iface < &klass->interfaces [klass->interface_count]) {
7879 *iter = iface;
7880 return *iface;
7881 }
7882 return NULL;
7883 }
7884
7885 /**
7886 * mono_class_get_nested_types
7887 * @klass: the MonoClass to act on
7888 *
7889 * This routine is an iterator routine for retrieving the nested types of a class.
7890 * This works only if @klass is non-generic, or a generic type definition.
7891 *
7892 * You must pass a gpointer that points to zero and is treated as an opaque handle to
7893 * iterate over all of the elements. When no more values are
7894 * available, the return value is NULL.
7895 *
7896 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
7897 */
7898 MonoClass*
7899 mono_class_get_nested_types (MonoClass* klass, gpointer *iter)
7900 {
7901 GList *item;
7902 int i;
7903
7904 if (!iter)
7905 return NULL;
7906 if (!klass->inited)
7907 mono_class_init (klass);
7908 if (!klass->nested_classes_inited) {
7909 if (!klass->type_token)
7910 klass->nested_classes_inited = TRUE;
7911 mono_loader_lock ();
7912 if (!klass->nested_classes_inited) {
7913 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, 1);
7914 while (i) {
7915 MonoClass* nclass;
7916 guint32 cols [MONO_NESTED_CLASS_SIZE];
7917 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
7918 nclass = mono_class_create_from_typedef (klass->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED]);
7919 if (!nclass)
7920 continue;
7921 mono_class_alloc_ext (klass);
7922 klass->ext->nested_classes = g_list_prepend_image (klass->image, klass->ext->nested_classes, nclass);
7923
7924 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
7925 }
7926 }
7927 mono_memory_barrier ();
7928 klass->nested_classes_inited = TRUE;
7929 mono_loader_unlock ();
7930 }
7931
7932 if (!*iter) {
7933 /* start from the first */
7934 if (klass->ext && klass->ext->nested_classes) {
7935 *iter = klass->ext->nested_classes;
7936 return klass->ext->nested_classes->data;
7937 } else {
7938 /* no nested types */
7939 return NULL;
7940 }
7941 }
7942 item = *iter;
7943 item = item->next;
7944 if (item) {
7945 *iter = item;
7946 return item->data;
7947 }
7948 return NULL;
7949 }
7950
7951 /**
7952 * mono_field_get_name:
7953 * @field: the MonoClassField to act on
7954 *
7955 * Returns: the name of the field.
7956 */
7957 const char*
7958 mono_field_get_name (MonoClassField *field)
7959 {
7960 return field->name;
7961 }
7962
7963 /**
7964 * mono_field_get_type:
7965 * @field: the MonoClassField to act on
7966 *
7967 * Returns: MonoType of the field.
7968 */
7969 MonoType*
7970 mono_field_get_type (MonoClassField *field)
7971 {
7972 return field->type;
7973 }
7974
7975 /**
7976 * mono_field_get_parent:
7977 * @field: the MonoClassField to act on
7978 *
7979 * Returns: MonoClass where the field was defined.
7980 */
7981 MonoClass*
7982 mono_field_get_parent (MonoClassField *field)
7983 {
7984 return field->parent;
7985 }
7986
7987 /**
7988 * mono_field_get_flags;
7989 * @field: the MonoClassField to act on
7990 *
7991 * The metadata flags for a field are encoded using the
7992 * FIELD_ATTRIBUTE_* constants. See the tabledefs.h file for details.
7993 *
7994 * Returns: the flags for the field.
7995 */
7996 guint32
7997 mono_field_get_flags (MonoClassField *field)
7998 {
7999 return field->type->attrs;
8000 }
8001
8002 /**
8003 * mono_field_get_offset;
8004 * @field: the MonoClassField to act on
8005 *
8006 * Returns: the field offset.
8007 */
8008 guint32
8009 mono_field_get_offset (MonoClassField *field)
8010 {
8011 return field->offset;
8012 }
8013
8014 static const char *
8015 mono_field_get_rva (MonoClassField *field)
8016 {
8017 guint32 rva;
8018 int field_index;
8019 MonoClass *klass = field->parent;
8020
8021 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA);
8022
8023 if (!klass->ext || !klass->ext->field_def_values) {
8024 mono_loader_lock ();
8025 mono_class_alloc_ext (klass);
8026 if (!klass->ext->field_def_values)
8027 klass->ext->field_def_values = mono_image_alloc0 (klass->image, sizeof (MonoFieldDefaultValue) * klass->field.count);
8028 mono_loader_unlock ();
8029 }
8030
8031 field_index = mono_field_get_index (field);
8032
8033 if (!klass->ext->field_def_values [field_index].data && !klass->image->dynamic) {
8034 mono_metadata_field_info (field->parent->image, klass->field.first + field_index, NULL, &rva, NULL);
8035 if (!rva)
8036 g_warning ("field %s in %s should have RVA data, but hasn't", mono_field_get_name (field), field->parent->name);
8037 klass->ext->field_def_values [field_index].data = mono_image_rva_map (field->parent->image, rva);
8038 }
8039
8040 return klass->ext->field_def_values [field_index].data;
8041 }
8042
8043 /**
8044 * mono_field_get_data;
8045 * @field: the MonoClassField to act on
8046 *
8047 * Returns: pointer to the metadata constant value or to the field
8048 * data if it has an RVA flag.
8049 */
8050 const char *
8051 mono_field_get_data (MonoClassField *field)
8052 {
8053 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT) {
8054 MonoTypeEnum def_type;
8055
8056 return mono_class_get_field_default_value (field, &def_type);
8057 } else if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
8058 return mono_field_get_rva (field);
8059 } else {
8060 return NULL;
8061 }
8062 }
8063
8064 /**
8065 * mono_property_get_name:
8066 * @prop: the MonoProperty to act on
8067 *
8068 * Returns: the name of the property
8069 */
8070 const char*
8071 mono_property_get_name (MonoProperty *prop)
8072 {
8073 return prop->name;
8074 }
8075
8076 /**
8077 * mono_property_get_set_method
8078 * @prop: the MonoProperty to act on.
8079 *
8080 * Returns: the setter method of the property (A MonoMethod)
8081 */
8082 MonoMethod*
8083 mono_property_get_set_method (MonoProperty *prop)
8084 {
8085 return prop->set;
8086 }
8087
8088 /**
8089 * mono_property_get_get_method
8090 * @prop: the MonoProperty to act on.
8091 *
8092 * Returns: the setter method of the property (A MonoMethod)
8093 */
8094 MonoMethod*
8095 mono_property_get_get_method (MonoProperty *prop)
8096 {
8097 return prop->get;
8098 }
8099
8100 /**
8101 * mono_property_get_parent:
8102 * @prop: the MonoProperty to act on.
8103 *
8104 * Returns: the MonoClass where the property was defined.
8105 */
8106 MonoClass*
8107 mono_property_get_parent (MonoProperty *prop)
8108 {
8109 return prop->parent;
8110 }
8111
8112 /**
8113 * mono_property_get_flags:
8114 * @prop: the MonoProperty to act on.
8115 *
8116 * The metadata flags for a property are encoded using the
8117 * PROPERTY_ATTRIBUTE_* constants. See the tabledefs.h file for details.
8118 *
8119 * Returns: the flags for the property.
8120 */
8121 guint32
8122 mono_property_get_flags (MonoProperty *prop)
8123 {
8124 return prop->attrs;
8125 }
8126
8127 /**
8128 * mono_event_get_name:
8129 * @event: the MonoEvent to act on
8130 *
8131 * Returns: the name of the event.
8132 */
8133 const char*
8134 mono_event_get_name (MonoEvent *event)
8135 {
8136 return event->name;
8137 }
8138
8139 /**
8140 * mono_event_get_add_method:
8141 * @event: The MonoEvent to act on.
8142 *
8143 * Returns: the @add' method for the event (a MonoMethod).
8144 */
8145 MonoMethod*
8146 mono_event_get_add_method (MonoEvent *event)
8147 {
8148 return event->add;
8149 }
8150
8151 /**
8152 * mono_event_get_remove_method:
8153 * @event: The MonoEvent to act on.
8154 *
8155 * Returns: the @remove method for the event (a MonoMethod).
8156 */
8157 MonoMethod*
8158 mono_event_get_remove_method (MonoEvent *event)
8159 {
8160 return event->remove;
8161 }
8162
8163 /**
8164 * mono_event_get_raise_method:
8165 * @event: The MonoEvent to act on.
8166 *
8167 * Returns: the @raise method for the event (a MonoMethod).
8168 */
8169 MonoMethod*
8170 mono_event_get_raise_method (MonoEvent *event)
8171 {
8172 return event->raise;
8173 }
8174
8175 /**
8176 * mono_event_get_parent:
8177 * @event: the MonoEvent to act on.
8178 *
8179 * Returns: the MonoClass where the event is defined.
8180 */
8181 MonoClass*
8182 mono_event_get_parent (MonoEvent *event)
8183 {
8184 return event->parent;
8185 }
8186
8187 /**
8188 * mono_event_get_flags
8189 * @event: the MonoEvent to act on.
8190 *
8191 * The metadata flags for an event are encoded using the
8192 * EVENT_* constants. See the tabledefs.h file for details.
8193 *
8194 * Returns: the flags for the event.
8195 */
8196 guint32
8197 mono_event_get_flags (MonoEvent *event)
8198 {
8199 return event->attrs;
8200 }
8201
8202 /**
8203 * mono_class_get_method_from_name:
8204 * @klass: where to look for the method
8205 * @name_space: name of the method
8206 * @param_count: number of parameters. -1 for any number.
8207 *
8208 * Obtains a MonoMethod with a given name and number of parameters.
8209 * It only works if there are no multiple signatures for any given method name.
8210 */
8211 MonoMethod *
8212 mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count)
8213 {
8214 return mono_class_get_method_from_name_flags (klass, name, param_count, 0);
8215 }
8216
8217 static MonoMethod*
8218 find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags)
8219 {
8220 MonoMethod *res = NULL;
8221 int i;
8222
8223 /* Search directly in the metadata to avoid calling setup_methods () */
8224 for (i = 0; i < klass->method.count; ++i) {
8225 guint32 cols [MONO_METHOD_SIZE];
8226 MonoMethod *method;
8227
8228 /* class->method.first points into the methodptr table */
8229 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
8230
8231 if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
8232 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
8233 if ((param_count == -1) || mono_method_signature (method)->param_count == param_count) {
8234 res = method;
8235 break;
8236 }
8237 }
8238 }
8239
8240 return res;
8241 }
8242
8243 /**
8244 * mono_class_get_method_from_name_flags:
8245 * @klass: where to look for the method
8246 * @name_space: name of the method
8247 * @param_count: number of parameters. -1 for any number.
8248 * @flags: flags which must be set in the method
8249 *
8250 * Obtains a MonoMethod with a given name and number of parameters.
8251 * It only works if there are no multiple signatures for any given method name.
8252 */
8253 MonoMethod *
8254 mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int param_count, int flags)
8255 {
8256 MonoMethod *res = NULL;
8257 int i;
8258
8259 mono_class_init (klass);
8260
8261 if (klass->generic_class && !klass->methods) {
8262 res = mono_class_get_method_from_name_flags (klass->generic_class->container_class, name, param_count, flags);
8263 if (res)
8264 res = mono_class_inflate_generic_method_full (res, klass, mono_class_get_context (klass));
8265 return res;
8266 }
8267
8268 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
8269 mono_class_setup_methods (klass);
8270 /*
8271 We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
8272 See mono/tests/array_load_exception.il
8273 FIXME we should better report this error to the caller
8274 */
8275 if (!klass->methods)
8276 return NULL;
8277 for (i = 0; i < klass->method.count; ++i) {
8278 MonoMethod *method = klass->methods [i];
8279
8280 if (method->name[0] == name [0] &&
8281 !strcmp (name, method->name) &&
8282 (param_count == -1 || mono_method_signature (method)->param_count == param_count) &&
8283 ((method->flags & flags) == flags)) {
8284 res = method;
8285 break;
8286 }
8287 }
8288 }
8289 else {
8290 res = find_method_in_metadata (klass, name, param_count, flags);
8291 }
8292
8293 return res;
8294 }
8295
8296 /**
8297 * mono_class_set_failure:
8298 * @klass: class in which the failure was detected
8299 * @ex_type: the kind of exception/error to be thrown (later)
8300 * @ex_data: exception data (specific to each type of exception/error)
8301 *
8302 * Keep a detected failure informations in the class for later processing.
8303 * Note that only the first failure is kept.
8304 *
8305 * LOCKING: Acquires the loader lock.
8306 */
8307 gboolean
8308 mono_class_set_failure (MonoClass *klass, guint32 ex_type, void *ex_data)
8309 {
8310 if (klass->exception_type)
8311 return FALSE;
8312
8313 mono_loader_lock ();
8314 klass->exception_type = ex_type;
8315 if (ex_data)
8316 mono_image_property_insert (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA, ex_data);
8317 mono_loader_unlock ();
8318
8319 return TRUE;
8320 }
8321
8322 /*
8323 * mono_class_get_exception_data:
8324 *
8325 * Return the exception_data property of KLASS.
8326 *
8327 * LOCKING: Acquires the loader lock.
8328 */
8329 gpointer
8330 mono_class_get_exception_data (MonoClass *klass)
8331 {
8332 return mono_image_property_lookup (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA);
8333 }
8334
8335 /**
8336 * mono_classes_init:
8337 *
8338 * Initialize the resources used by this module.
8339 */
8340 void
8341 mono_classes_init (void)
8342 {
8343 mono_counters_register ("Inflated methods size",
8344 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_methods_size);
8345 mono_counters_register ("Inflated classes",
8346 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes);
8347 mono_counters_register ("Inflated classes size",
8348 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes_size);
8349 mono_counters_register ("MonoClass size",
8350 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &classes_size);
8351 mono_counters_register ("MonoClassExt size",
8352 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_ext_size);
8353 }
8354
8355 /**
8356 * mono_classes_cleanup:
8357 *
8358 * Free the resources used by this module.
8359 */
8360 void
8361 mono_classes_cleanup (void)
8362 {
8363 if (global_interface_bitset)
8364 mono_bitset_free (global_interface_bitset);
8365 }
8366
8367 /**
8368 * mono_class_get_exception_for_failure:
8369 * @klass: class in which the failure was detected
8370 *
8371 * Return a constructed MonoException than the caller can then throw
8372 * using mono_raise_exception - or NULL if no failure is present (or
8373 * doesn't result in an exception).
8374 */
8375 MonoException*
8376 mono_class_get_exception_for_failure (MonoClass *klass)
8377 {
8378 gpointer exception_data = mono_class_get_exception_data (klass);
8379
8380 switch (klass->exception_type) {
8381 case MONO_EXCEPTION_SECURITY_INHERITANCEDEMAND: {
8382 MonoDomain *domain = mono_domain_get ();
8383 MonoSecurityManager* secman = mono_security_manager_get_methods ();
8384 MonoMethod *method = exception_data;
8385 guint32 error = (method) ? MONO_METADATA_INHERITANCEDEMAND_METHOD : MONO_METADATA_INHERITANCEDEMAND_CLASS;
8386 MonoObject *exc = NULL;
8387 gpointer args [4];
8388
8389 args [0] = &error;
8390 args [1] = mono_assembly_get_object (domain, mono_image_get_assembly (klass->image));
8391 args [2] = mono_type_get_object (domain, &klass->byval_arg);
8392 args [3] = (method) ? mono_method_get_object (domain, method, NULL) : NULL;
8393
8394 mono_runtime_invoke (secman->inheritsecurityexception, NULL, args, &exc);
8395 return (MonoException*) exc;
8396 }
8397 case MONO_EXCEPTION_TYPE_LOAD: {
8398 MonoString *name;
8399 MonoException *ex;
8400 char *str = mono_type_get_full_name (klass);
8401 char *astr = klass->image->assembly? mono_stringify_assembly_name (&klass->image->assembly->aname): NULL;
8402 name = mono_string_new (mono_domain_get (), str);
8403 g_free (str);
8404 ex = mono_get_exception_type_load (name, astr);
8405 g_free (astr);
8406 return ex;
8407 }
8408 case MONO_EXCEPTION_MISSING_METHOD: {
8409 char *class_name = exception_data;
8410 char *assembly_name = class_name + strlen (class_name) + 1;
8411
8412 return mono_get_exception_missing_method (class_name, assembly_name);
8413 }
8414 case MONO_EXCEPTION_MISSING_FIELD: {
8415 char *class_name = exception_data;
8416 char *member_name = class_name + strlen (class_name) + 1;
8417
8418 return mono_get_exception_missing_field (class_name, member_name);
8419 }
8420 case MONO_EXCEPTION_FILE_NOT_FOUND: {
8421 char *msg_format = exception_data;
8422 char *assembly_name = msg_format + strlen (msg_format) + 1;
8423 char *msg = g_strdup_printf (msg_format, assembly_name);
8424 MonoException *ex;
8425
8426 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), assembly_name));
8427
8428 g_free (msg);
8429
8430 return ex;
8431 }
8432 case MONO_EXCEPTION_BAD_IMAGE: {
8433 return mono_get_exception_bad_image_format (exception_data);
8434 }
8435 default: {
8436 MonoLoaderError *error;
8437 MonoException *ex;
8438
8439 error = mono_loader_get_last_error ();
8440 if (error != NULL){
8441 ex = mono_loader_error_prepare_exception (error);
8442 return ex;
8443 }
8444
8445 /* TODO - handle other class related failures */
8446 return NULL;
8447 }
8448 }
8449 }
8450
8451 static gboolean
8452 is_nesting_type (MonoClass *outer_klass, MonoClass *inner_klass)
8453 {
8454 outer_klass = mono_class_get_generic_type_definition (outer_klass);
8455 inner_klass = mono_class_get_generic_type_definition (inner_klass);
8456 do {
8457 if (outer_klass == inner_klass)
8458 return TRUE;
8459 inner_klass = inner_klass->nested_in;
8460 } while (inner_klass);
8461 return FALSE;
8462 }
8463
8464 MonoClass *
8465 mono_class_get_generic_type_definition (MonoClass *klass)
8466 {
8467 return klass->generic_class ? klass->generic_class->container_class : klass;
8468 }
8469
8470 /*
8471 * Check if @klass is a subtype of @parent ignoring generic instantiations.
8472 *
8473 * Generic instantiations are ignored for all super types of @klass.
8474 *
8475 * Visibility checks ignoring generic instantiations.
8476 */
8477 gboolean
8478 mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent)
8479 {
8480 int i;
8481 klass = mono_class_get_generic_type_definition (klass);
8482 parent = mono_class_get_generic_type_definition (parent);
8483
8484 for (i = 0; i < klass->idepth; ++i) {
8485 if (parent == mono_class_get_generic_type_definition (klass->supertypes [i]))
8486 return TRUE;
8487 }
8488 return FALSE;
8489 }
8490 /*
8491 * Subtype can only access parent members with family protection if the site object
8492 * is subclass of Subtype. For example:
8493 * class A { protected int x; }
8494 * class B : A {
8495 * void valid_access () {
8496 * B b;
8497 * b.x = 0;
8498 * }
8499 * void invalid_access () {
8500 * A a;
8501 * a.x = 0;
8502 * }
8503 * }
8504 * */
8505 static gboolean
8506 is_valid_family_access (MonoClass *access_klass, MonoClass *member_klass, MonoClass *context_klass)
8507 {
8508 if (!mono_class_has_parent_and_ignore_generics (access_klass, member_klass))
8509 return FALSE;
8510
8511 if (context_klass == NULL)
8512 return TRUE;
8513 /*if access_klass is not member_klass context_klass must be type compat*/
8514 if (access_klass != member_klass && !mono_class_has_parent_and_ignore_generics (context_klass, access_klass))
8515 return FALSE;
8516 return TRUE;
8517 }
8518
8519 static gboolean
8520 can_access_internals (MonoAssembly *accessing, MonoAssembly* accessed)
8521 {
8522 GSList *tmp;
8523 if (accessing == accessed)
8524 return TRUE;
8525 if (!accessed || !accessing)
8526 return FALSE;
8527
8528 /* extra safety under CoreCLR - the runtime does not verify the strongname signatures
8529 * anywhere so untrusted friends are not safe to access platform's code internals */
8530 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR) {
8531 if (!mono_security_core_clr_can_access_internals (accessing->image, accessed->image))
8532 return FALSE;
8533 }
8534
8535 mono_assembly_load_friends (accessed);
8536 for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
8537 MonoAssemblyName *friend = tmp->data;
8538 /* Be conservative with checks */
8539 if (!friend->name)
8540 continue;
8541 if (strcmp (accessing->aname.name, friend->name))
8542 continue;
8543 if (friend->public_key_token [0]) {
8544 if (!accessing->aname.public_key_token [0])
8545 continue;
8546 if (!mono_public_tokens_are_equal (friend->public_key_token, accessing->aname.public_key_token))
8547 continue;
8548 }
8549 return TRUE;
8550 }
8551 return FALSE;
8552 }
8553
8554 /*
8555 * If klass is a generic type or if it is derived from a generic type, return the
8556 * MonoClass of the generic definition
8557 * Returns NULL if not found
8558 */
8559 static MonoClass*
8560 get_generic_definition_class (MonoClass *klass)
8561 {
8562 while (klass) {
8563 if (klass->generic_class && klass->generic_class->container_class)
8564 return klass->generic_class->container_class;
8565 klass = klass->parent;
8566 }
8567 return NULL;
8568 }
8569
8570 static gboolean
8571 can_access_instantiation (MonoClass *access_klass, MonoGenericInst *ginst)
8572 {
8573 int i;
8574 for (i = 0; i < ginst->type_argc; ++i) {
8575 MonoType *type = ginst->type_argv[i];
8576 switch (type->type) {
8577 case MONO_TYPE_SZARRAY:
8578 if (!can_access_type (access_klass, type->data.klass))
8579 return FALSE;
8580 break;
8581 case MONO_TYPE_ARRAY:
8582 if (!can_access_type (access_klass, type->data.array->eklass))
8583 return FALSE;
8584 break;
8585 case MONO_TYPE_PTR:
8586 if (!can_access_type (access_klass, mono_class_from_mono_type (type->data.type)))
8587 return FALSE;
8588 break;
8589 case MONO_TYPE_CLASS:
8590 case MONO_TYPE_VALUETYPE:
8591 case MONO_TYPE_GENERICINST:
8592 if (!can_access_type (access_klass, mono_class_from_mono_type (type)))
8593 return FALSE;
8594 }
8595 }
8596 return TRUE;
8597 }
8598
8599 static gboolean
8600 can_access_type (MonoClass *access_klass, MonoClass *member_klass)
8601 {
8602 int access_level;
8603
8604 if (access_klass->element_class && !access_klass->enumtype)
8605 access_klass = access_klass->element_class;
8606
8607 if (member_klass->element_class && !member_klass->enumtype)
8608 member_klass = member_klass->element_class;
8609
8610 access_level = member_klass->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK;
8611
8612 if (member_klass->byval_arg.type == MONO_TYPE_VAR || member_klass->byval_arg.type == MONO_TYPE_MVAR)
8613 return TRUE;
8614
8615 if (member_klass->generic_class && !can_access_instantiation (access_klass, member_klass->generic_class->context.class_inst))
8616 return FALSE;
8617
8618 if (is_nesting_type (access_klass, member_klass) || (access_klass->nested_in && is_nesting_type (access_klass->nested_in, member_klass)))
8619 return TRUE;
8620
8621 if (member_klass->nested_in && !can_access_type (access_klass, member_klass->nested_in))
8622 return FALSE;
8623
8624 /*Non nested type with nested visibility. We just fail it.*/
8625 if (access_level >= TYPE_ATTRIBUTE_NESTED_PRIVATE && access_level <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM && member_klass->nested_in == NULL)
8626 return FALSE;
8627
8628 switch (access_level) {
8629 case TYPE_ATTRIBUTE_NOT_PUBLIC:
8630 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
8631
8632 case TYPE_ATTRIBUTE_PUBLIC:
8633 return TRUE;
8634
8635 case TYPE_ATTRIBUTE_NESTED_PUBLIC:
8636 return TRUE;
8637
8638 case TYPE_ATTRIBUTE_NESTED_PRIVATE:
8639 return is_nesting_type (member_klass, access_klass);
8640
8641 case TYPE_ATTRIBUTE_NESTED_FAMILY:
8642 return mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
8643
8644 case TYPE_ATTRIBUTE_NESTED_ASSEMBLY:
8645 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
8646
8647 case TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM:
8648 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) &&
8649 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
8650
8651 case TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM:
8652 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) ||
8653 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
8654 }
8655 return FALSE;
8656 }
8657
8658 /* FIXME: check visibility of type, too */
8659 static gboolean
8660 can_access_member (MonoClass *access_klass, MonoClass *member_klass, MonoClass* context_klass, int access_level)
8661 {
8662 MonoClass *member_generic_def;
8663 if (((access_klass->generic_class && access_klass->generic_class->container_class) ||
8664 access_klass->generic_container) &&
8665 (member_generic_def = get_generic_definition_class (member_klass))) {
8666 MonoClass *access_container;
8667
8668 if (access_klass->generic_container)
8669 access_container = access_klass;
8670 else
8671 access_container = access_klass->generic_class->container_class;
8672
8673 if (can_access_member (access_container, member_generic_def, context_klass, access_level))
8674 return TRUE;
8675 }
8676
8677 /* Partition I 8.5.3.2 */
8678 /* the access level values are the same for fields and methods */
8679 switch (access_level) {
8680 case FIELD_ATTRIBUTE_COMPILER_CONTROLLED:
8681 /* same compilation unit */
8682 return access_klass->image == member_klass->image;
8683 case FIELD_ATTRIBUTE_PRIVATE:
8684 return access_klass == member_klass;
8685 case FIELD_ATTRIBUTE_FAM_AND_ASSEM:
8686 if (is_valid_family_access (access_klass, member_klass, context_klass) &&
8687 can_access_internals (access_klass->image->assembly, member_klass->image->assembly))
8688 return TRUE;
8689 return FALSE;
8690 case FIELD_ATTRIBUTE_ASSEMBLY:
8691 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
8692 case FIELD_ATTRIBUTE_FAMILY:
8693 if (is_valid_family_access (access_klass, member_klass, context_klass))
8694 return TRUE;
8695 return FALSE;
8696 case FIELD_ATTRIBUTE_FAM_OR_ASSEM:
8697 if (is_valid_family_access (access_klass, member_klass, context_klass))
8698 return TRUE;
8699 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
8700 case FIELD_ATTRIBUTE_PUBLIC:
8701 return TRUE;
8702 }
8703 return FALSE;
8704 }
8705
8706 gboolean
8707 mono_method_can_access_field (MonoMethod *method, MonoClassField *field)
8708 {
8709 /* FIXME: check all overlapping fields */
8710 int can = can_access_member (method->klass, field->parent, NULL, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
8711 if (!can) {
8712 MonoClass *nested = method->klass->nested_in;
8713 while (nested) {
8714 can = can_access_member (nested, field->parent, NULL, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
8715 if (can)
8716 return TRUE;
8717 nested = nested->nested_in;
8718 }
8719 }
8720 return can;
8721 }
8722
8723 gboolean
8724 mono_method_can_access_method (MonoMethod *method, MonoMethod *called)
8725 {
8726 int can = can_access_member (method->klass, called->klass, NULL, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
8727 if (!can) {
8728 MonoClass *nested = method->klass->nested_in;
8729 while (nested) {
8730 can = can_access_member (nested, called->klass, NULL, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
8731 if (can)
8732 return TRUE;
8733 nested = nested->nested_in;
8734 }
8735 }
8736 /*
8737 * FIXME:
8738 * with generics calls to explicit interface implementations can be expressed
8739 * directly: the method is private, but we must allow it. This may be opening
8740 * a hole or the generics code should handle this differently.
8741 * Maybe just ensure the interface type is public.
8742 */
8743 if ((called->flags & METHOD_ATTRIBUTE_VIRTUAL) && (called->flags & METHOD_ATTRIBUTE_FINAL))
8744 return TRUE;
8745 return can;
8746 }
8747
8748 /*
8749 * mono_method_can_access_method_full:
8750 * @method: The caller method
8751 * @called: The called method
8752 * @context_klass: The static type on stack of the owner @called object used
8753 *
8754 * This function must be used with instance calls, as they have more strict family accessibility.
8755 * It can be used with static methods, but context_klass should be NULL.
8756 *
8757 * Returns: TRUE if caller have proper visibility and acessibility to @called
8758 */
8759 gboolean
8760 mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass)
8761 {
8762 MonoClass *access_class = method->klass;
8763 MonoClass *member_class = called->klass;
8764 int can = can_access_member (access_class, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
8765 if (!can) {
8766 MonoClass *nested = access_class->nested_in;
8767 while (nested) {
8768 can = can_access_member (nested, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
8769 if (can)
8770 break;
8771 nested = nested->nested_in;
8772 }
8773 }
8774
8775 if (!can)
8776 return FALSE;
8777
8778 if (!can_access_type (access_class, member_class) && (!access_class->nested_in || !can_access_type (access_class->nested_in, member_class)))
8779 return FALSE;
8780
8781 if (called->is_inflated) {
8782 MonoMethodInflated * infl = (MonoMethodInflated*)called;
8783 if (infl->context.method_inst && !can_access_instantiation (access_class, infl->context.method_inst))
8784 return FALSE;
8785 }
8786
8787 return TRUE;
8788 }
8789
8790
8791 /*
8792 * mono_method_can_access_field_full:
8793 * @method: The caller method
8794 * @field: The accessed field
8795 * @context_klass: The static type on stack of the owner @field object used
8796 *
8797 * This function must be used with instance fields, as they have more strict family accessibility.
8798 * It can be used with static fields, but context_klass should be NULL.
8799 *
8800 * Returns: TRUE if caller have proper visibility and acessibility to @field
8801 */
8802 gboolean
8803 mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass)
8804 {
8805 MonoClass *access_class = method->klass;
8806 MonoClass *member_class = field->parent;
8807 /* FIXME: check all overlapping fields */
8808 int can = can_access_member (access_class, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
8809 if (!can) {
8810 MonoClass *nested = access_class->nested_in;
8811 while (nested) {
8812 can = can_access_member (nested, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
8813 if (can)
8814 break;
8815 nested = nested->nested_in;
8816 }
8817 }
8818
8819 if (!can)
8820 return FALSE;
8821
8822 if (!can_access_type (access_class, member_class) && (!access_class->nested_in || !can_access_type (access_class->nested_in, member_class)))
8823 return FALSE;
8824 return TRUE;
8825 }
8826
8827 /**
8828 * mono_type_is_valid_enum_basetype:
8829 * @type: The MonoType to check
8830 *
8831 * Returns: TRUE if the type can be used as the basetype of an enum
8832 */
8833 gboolean mono_type_is_valid_enum_basetype (MonoType * type) {
8834 switch (type->type) {
8835 case MONO_TYPE_I1:
8836 case MONO_TYPE_U1:
8837 case MONO_TYPE_BOOLEAN:
8838 case MONO_TYPE_I2:
8839 case MONO_TYPE_U2:
8840 case MONO_TYPE_CHAR:
8841 case MONO_TYPE_I4:
8842 case MONO_TYPE_U4:
8843 case MONO_TYPE_I8:
8844 case MONO_TYPE_U8:
8845 case MONO_TYPE_I:
8846 case MONO_TYPE_U:
8847 return TRUE;
8848 }
8849 return FALSE;
8850 }
8851
8852 /**
8853 * mono_class_is_valid_enum:
8854 * @klass: An enum class to be validated
8855 *
8856 * This method verify the required properties an enum should have.
8857 *
8858 * Returns: TRUE if the informed enum class is valid
8859 *
8860 * FIXME: TypeBuilder enums are allowed to implement interfaces, but since they cannot have methods, only empty interfaces are possible
8861 * FIXME: enum types are not allowed to have a cctor, but mono_reflection_create_runtime_class sets has_cctor to 1 for all types
8862 * FIXME: TypeBuilder enums can have any kind of static fields, but the spec is very explicit about that (P II 14.3)
8863 */
8864 gboolean mono_class_is_valid_enum (MonoClass *klass) {
8865 MonoClassField * field;
8866 gpointer iter = NULL;
8867 gboolean found_base_field = FALSE;
8868
8869 g_assert (klass->enumtype);
8870 /* we cannot test against mono_defaults.enum_class, or mcs won't be able to compile the System namespace*/
8871 if (!klass->parent || strcmp (klass->parent->name, "Enum") || strcmp (klass->parent->name_space, "System") ) {
8872 return FALSE;
8873 }
8874
8875 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) != TYPE_ATTRIBUTE_AUTO_LAYOUT)
8876 return FALSE;
8877
8878 while ((field = mono_class_get_fields (klass, &iter))) {
8879 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
8880 if (found_base_field)
8881 return FALSE;
8882 found_base_field = TRUE;
8883 if (!mono_type_is_valid_enum_basetype (field->type))
8884 return FALSE;
8885 }
8886 }
8887
8888 if (!found_base_field)
8889 return FALSE;
8890
8891 if (klass->method.count > 0)
8892 return FALSE;
8893
8894 return TRUE;
8895 }
8896
8897 gboolean
8898 mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass)
8899 {
8900 return gklass->context.class_inst == gklass->container_class->generic_container->context.class_inst;
8901 }
8902
8903 /*
8904 * mono_class_setup_interface_id:
8905 *
8906 * Initializes MonoClass::interface_id if required.
8907 *
8908 * LOCKING: Acquires the loader lock.
8909 */
8910 void
8911 mono_class_setup_interface_id (MonoClass *class)
8912 {
8913 mono_loader_lock ();
8914 if (MONO_CLASS_IS_INTERFACE (class) && !class->interface_id)
8915 class->interface_id = mono_get_unique_iid (class);
8916 mono_loader_unlock ();
8917 }
8918
8919 /*
8920 * mono_class_alloc_ext:
8921 *
8922 * Allocate klass->ext if not already done.
8923 * LOCKING: Assumes the loader lock is held.
8924 */
8925 void
8926 mono_class_alloc_ext (MonoClass *klass)
8927 {
8928 if (!klass->ext) {
8929 if (klass->generic_class) {
8930 klass->ext = g_new0 (MonoClassExt, 1);
8931 } else {
8932 klass->ext = mono_image_alloc0 (klass->image, sizeof (MonoClassExt));
8933 }
8934 class_ext_size += sizeof (MonoClassExt);
8935 }
8936 }
8937
8938 /*
8939 * mono_class_setup_interfaces:
8940 *
8941 * Initialize class->interfaces/interfaces_count.
8942 * LOCKING: Acquires the loader lock.
8943 * This function can fail the type.
8944 */
8945 void
8946 mono_class_setup_interfaces (MonoClass *klass, MonoError *error)
8947 {
8948 int i;
8949
8950 mono_error_init (error);
8951
8952 if (klass->interfaces_inited)
8953 return;
8954
8955 mono_loader_lock ();
8956
8957 if (klass->interfaces_inited) {
8958 mono_loader_unlock ();
8959 return;
8960 }
8961
8962 if (klass->rank == 1 && klass->byval_arg.type != MONO_TYPE_ARRAY && mono_defaults.generic_ilist_class) {
8963 MonoType *args [1];
8964
8965 /* generic IList, ICollection, IEnumerable */
8966 klass->interface_count = 1;
8967 klass->interfaces = mono_image_alloc0 (klass->image, sizeof (MonoClass*) * klass->interface_count);
8968
8969 args [0] = &klass->element_class->byval_arg;
8970 klass->interfaces [0] = mono_class_bind_generic_parameters (
8971 mono_defaults.generic_ilist_class, 1, args, FALSE);
8972 } else if (klass->generic_class) {
8973 MonoClass *gklass = klass->generic_class->container_class;
8974
8975 klass->interface_count = gklass->interface_count;
8976 klass->interfaces = g_new0 (MonoClass *, klass->interface_count);
8977 for (i = 0; i < klass->interface_count; i++) {
8978 klass->interfaces [i] = mono_class_inflate_generic_class_checked (gklass->interfaces [i], mono_generic_class_get_context (klass->generic_class), error);
8979 if (!mono_error_ok (error)) {
8980 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not setup the interfaces"));
8981 g_free (klass->interfaces);
8982 klass->interfaces = NULL;
8983 return;
8984 }
8985 }
8986 }
8987
8988 mono_memory_barrier ();
8989
8990 klass->interfaces_inited = TRUE;
8991
8992 mono_loader_unlock ();
8993 }
Mirror of the official Mono project git repository