Daily bump.
[official-gcc.git] / libjava / jni.cc
blob1abd2d2497ac70c72c7891eb353f68d672bd80b3
1 // jni.cc - JNI implementation, including the jump table.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
9 details. */
11 #include <config.h>
13 #include <stddef.h>
14 #include <string.h>
16 #include <gcj/cni.h>
17 #include <jvm.h>
18 #include <java-assert.h>
19 #include <jni.h>
20 #ifdef ENABLE_JVMPI
21 #include <jvmpi.h>
22 #endif
24 #include <java/lang/Class.h>
25 #include <java/lang/ClassLoader.h>
26 #include <java/lang/Throwable.h>
27 #include <java/lang/ArrayIndexOutOfBoundsException.h>
28 #include <java/lang/StringIndexOutOfBoundsException.h>
29 #include <java/lang/UnsatisfiedLinkError.h>
30 #include <java/lang/InstantiationException.h>
31 #include <java/lang/NoSuchFieldError.h>
32 #include <java/lang/NoSuchMethodError.h>
33 #include <java/lang/reflect/Constructor.h>
34 #include <java/lang/reflect/Method.h>
35 #include <java/lang/reflect/Modifier.h>
36 #include <java/lang/OutOfMemoryError.h>
37 #include <java/util/IdentityHashMap.h>
38 #include <java/lang/Integer.h>
39 #include <java/lang/ThreadGroup.h>
40 #include <java/lang/Thread.h>
42 #include <gcj/method.h>
43 #include <gcj/field.h>
45 #include <java-interp.h>
46 #include <java-threads.h>
48 using namespace gcj;
50 // This enum is used to select different template instantiations in
51 // the invocation code.
52 enum invocation_type
54 normal,
55 nonvirtual,
56 static_type,
57 constructor
60 // Forward declarations.
61 extern struct JNINativeInterface _Jv_JNIFunctions;
62 extern struct JNIInvokeInterface _Jv_JNI_InvokeFunctions;
64 // Number of slots in the default frame. The VM must allow at least
65 // 16.
66 #define FRAME_SIZE 32
68 // Mark value indicating this is an overflow frame.
69 #define MARK_NONE 0
70 // Mark value indicating this is a user frame.
71 #define MARK_USER 1
72 // Mark value indicating this is a system frame.
73 #define MARK_SYSTEM 2
75 // This structure is used to keep track of local references.
76 struct _Jv_JNI_LocalFrame
78 // This is true if this frame object represents a pushed frame (eg
79 // from PushLocalFrame).
80 int marker : 2;
82 // Number of elements in frame.
83 int size : 30;
85 // Next frame in chain.
86 _Jv_JNI_LocalFrame *next;
88 // The elements. These are allocated using the C "struct hack".
89 jobject vec[0];
92 // This holds a reference count for all local references.
93 static java::util::IdentityHashMap *local_ref_table;
94 // This holds a reference count for all global references.
95 static java::util::IdentityHashMap *global_ref_table;
97 // The only VM.
98 static JavaVM *the_vm;
100 #ifdef ENABLE_JVMPI
101 // The only JVMPI interface description.
102 static JVMPI_Interface _Jv_JVMPI_Interface;
104 static jint
105 jvmpiEnableEvent (jint event_type, void *)
107 switch (event_type)
109 case JVMPI_EVENT_OBJECT_ALLOC:
110 _Jv_JVMPI_Notify_OBJECT_ALLOC = _Jv_JVMPI_Interface.NotifyEvent;
111 break;
113 case JVMPI_EVENT_THREAD_START:
114 _Jv_JVMPI_Notify_THREAD_START = _Jv_JVMPI_Interface.NotifyEvent;
115 break;
117 case JVMPI_EVENT_THREAD_END:
118 _Jv_JVMPI_Notify_THREAD_END = _Jv_JVMPI_Interface.NotifyEvent;
119 break;
121 default:
122 return JVMPI_NOT_AVAILABLE;
125 return JVMPI_SUCCESS;
128 static jint
129 jvmpiDisableEvent (jint event_type, void *)
131 switch (event_type)
133 case JVMPI_EVENT_OBJECT_ALLOC:
134 _Jv_JVMPI_Notify_OBJECT_ALLOC = NULL;
135 break;
137 default:
138 return JVMPI_NOT_AVAILABLE;
141 return JVMPI_SUCCESS;
143 #endif
147 void
148 _Jv_JNI_Init (void)
150 local_ref_table = new java::util::IdentityHashMap;
151 global_ref_table = new java::util::IdentityHashMap;
153 #ifdef ENABLE_JVMPI
154 _Jv_JVMPI_Interface.version = 1;
155 _Jv_JVMPI_Interface.EnableEvent = &jvmpiEnableEvent;
156 _Jv_JVMPI_Interface.DisableEvent = &jvmpiDisableEvent;
157 _Jv_JVMPI_Interface.EnableGC = &_Jv_EnableGC;
158 _Jv_JVMPI_Interface.DisableGC = &_Jv_DisableGC;
159 _Jv_JVMPI_Interface.RunGC = &_Jv_RunGC;
160 #endif
163 // Tell the GC that a certain pointer is live.
164 static void
165 mark_for_gc (jobject obj, java::util::IdentityHashMap *ref_table)
167 JvSynchronize sync (ref_table);
169 using namespace java::lang;
170 Integer *refcount = (Integer *) ref_table->get (obj);
171 jint val = (refcount == NULL) ? 0 : refcount->intValue ();
172 // FIXME: what about out of memory error?
173 ref_table->put (obj, new Integer (val + 1));
176 // Unmark a pointer.
177 static void
178 unmark_for_gc (jobject obj, java::util::IdentityHashMap *ref_table)
180 JvSynchronize sync (ref_table);
182 using namespace java::lang;
183 Integer *refcount = (Integer *) ref_table->get (obj);
184 JvAssert (refcount);
185 jint val = refcount->intValue () - 1;
186 JvAssert (val >= 0);
187 if (val == 0)
188 ref_table->remove (obj);
189 else
190 // FIXME: what about out of memory error?
191 ref_table->put (obj, new Integer (val));
194 // "Unwrap" some random non-reference type. This exists to simplify
195 // other template functions.
196 template<typename T>
197 static T
198 unwrap (T val)
200 return val;
203 // Unwrap a weak reference, if required.
204 template<typename T>
205 static T *
206 unwrap (T *obj)
208 using namespace gnu::gcj::runtime;
209 // We can compare the class directly because JNIWeakRef is `final'.
210 // Doing it this way is much faster.
211 if (obj == NULL || obj->getClass () != &JNIWeakRef::class$)
212 return obj;
213 JNIWeakRef *wr = reinterpret_cast<JNIWeakRef *> (obj);
214 return reinterpret_cast<T *> (wr->get ());
219 static jobject
220 _Jv_JNI_NewGlobalRef (JNIEnv *, jobject obj)
222 // This seems weird but I think it is correct.
223 obj = unwrap (obj);
224 mark_for_gc (obj, global_ref_table);
225 return obj;
228 static void
229 _Jv_JNI_DeleteGlobalRef (JNIEnv *, jobject obj)
231 // This seems weird but I think it is correct.
232 obj = unwrap (obj);
233 unmark_for_gc (obj, global_ref_table);
236 static void
237 _Jv_JNI_DeleteLocalRef (JNIEnv *env, jobject obj)
239 _Jv_JNI_LocalFrame *frame;
241 // This seems weird but I think it is correct.
242 obj = unwrap (obj);
244 for (frame = env->locals; frame != NULL; frame = frame->next)
246 for (int i = 0; i < frame->size; ++i)
248 if (frame->vec[i] == obj)
250 frame->vec[i] = NULL;
251 unmark_for_gc (obj, local_ref_table);
252 return;
256 // Don't go past a marked frame.
257 JvAssert (frame->marker == MARK_NONE);
260 JvAssert (0);
263 static jint
264 _Jv_JNI_EnsureLocalCapacity (JNIEnv *env, jint size)
266 // It is easier to just always allocate a new frame of the requested
267 // size. This isn't the most efficient thing, but for now we don't
268 // care. Note that _Jv_JNI_PushLocalFrame relies on this right now.
270 _Jv_JNI_LocalFrame *frame;
273 frame = (_Jv_JNI_LocalFrame *) _Jv_Malloc (sizeof (_Jv_JNI_LocalFrame)
274 + size * sizeof (jobject));
276 catch (jthrowable t)
278 env->ex = t;
279 return JNI_ERR;
282 frame->marker = MARK_NONE;
283 frame->size = size;
284 memset (&frame->vec[0], 0, size * sizeof (jobject));
285 frame->next = env->locals;
286 env->locals = frame;
288 return 0;
291 static jint
292 _Jv_JNI_PushLocalFrame (JNIEnv *env, jint size)
294 jint r = _Jv_JNI_EnsureLocalCapacity (env, size);
295 if (r < 0)
296 return r;
298 // The new frame is on top.
299 env->locals->marker = MARK_USER;
301 return 0;
304 static jobject
305 _Jv_JNI_NewLocalRef (JNIEnv *env, jobject obj)
307 // This seems weird but I think it is correct.
308 obj = unwrap (obj);
310 // Try to find an open slot somewhere in the topmost frame.
311 _Jv_JNI_LocalFrame *frame = env->locals;
312 bool done = false, set = false;
313 for (; frame != NULL && ! done; frame = frame->next)
315 for (int i = 0; i < frame->size; ++i)
317 if (frame->vec[i] == NULL)
319 set = true;
320 done = true;
321 frame->vec[i] = obj;
322 break;
326 // If we found a slot, or if the frame we just searched is the
327 // mark frame, then we are done.
328 if (done || frame == NULL || frame->marker != MARK_NONE)
329 break;
332 if (! set)
334 // No slots, so we allocate a new frame. According to the spec
335 // we could just die here. FIXME: return value.
336 _Jv_JNI_EnsureLocalCapacity (env, 16);
337 // We know the first element of the new frame will be ok.
338 env->locals->vec[0] = obj;
341 mark_for_gc (obj, local_ref_table);
342 return obj;
345 static jobject
346 _Jv_JNI_PopLocalFrame (JNIEnv *env, jobject result, int stop)
348 _Jv_JNI_LocalFrame *rf = env->locals;
350 bool done = false;
351 while (rf != NULL && ! done)
353 for (int i = 0; i < rf->size; ++i)
354 if (rf->vec[i] != NULL)
355 unmark_for_gc (rf->vec[i], local_ref_table);
357 // If the frame we just freed is the marker frame, we are done.
358 done = (rf->marker == stop);
360 _Jv_JNI_LocalFrame *n = rf->next;
361 // When N==NULL, we've reached the stack-allocated frame, and we
362 // must not free it. However, we must be sure to clear all its
363 // elements, since we might conceivably reuse it.
364 if (n == NULL)
366 memset (&rf->vec[0], 0, rf->size * sizeof (jobject));
367 break;
370 _Jv_Free (rf);
371 rf = n;
374 // Update the local frame information.
375 env->locals = rf;
377 return result == NULL ? NULL : _Jv_JNI_NewLocalRef (env, result);
380 static jobject
381 _Jv_JNI_PopLocalFrame (JNIEnv *env, jobject result)
383 return _Jv_JNI_PopLocalFrame (env, result, MARK_USER);
386 // Pop a `system' frame from the stack. This is `extern "C"' as it is
387 // used by the compiler.
388 extern "C" void
389 _Jv_JNI_PopSystemFrame (JNIEnv *env)
391 _Jv_JNI_PopLocalFrame (env, NULL, MARK_SYSTEM);
393 if (env->ex)
395 jthrowable t = env->ex;
396 env->ex = NULL;
397 throw t;
401 // This function is used from other template functions. It wraps the
402 // return value appropriately; we specialize it so that object returns
403 // are turned into local references.
404 template<typename T>
405 static T
406 wrap_value (JNIEnv *, T value)
408 return value;
411 // This specialization is used for jobject, jclass, jstring, jarray,
412 // etc.
413 template<typename T>
414 static T *
415 wrap_value (JNIEnv *env, T *value)
417 return (value == NULL
418 ? value
419 : (T *) _Jv_JNI_NewLocalRef (env, (jobject) value));
424 static jint
425 _Jv_JNI_GetVersion (JNIEnv *)
427 return JNI_VERSION_1_2;
430 static jclass
431 _Jv_JNI_DefineClass (JNIEnv *env, jobject loader,
432 const jbyte *buf, jsize bufLen)
436 loader = unwrap (loader);
438 jbyteArray bytes = JvNewByteArray (bufLen);
440 jbyte *elts = elements (bytes);
441 memcpy (elts, buf, bufLen * sizeof (jbyte));
443 java::lang::ClassLoader *l
444 = reinterpret_cast<java::lang::ClassLoader *> (loader);
446 jclass result = l->defineClass (bytes, 0, bufLen);
447 return (jclass) wrap_value (env, result);
449 catch (jthrowable t)
451 env->ex = t;
452 return NULL;
456 static jclass
457 _Jv_JNI_FindClass (JNIEnv *env, const char *name)
459 // FIXME: assume that NAME isn't too long.
460 int len = strlen (name);
461 char s[len + 1];
462 for (int i = 0; i <= len; ++i)
463 s[i] = (name[i] == '/') ? '.' : name[i];
465 jclass r = NULL;
468 // This might throw an out of memory exception.
469 jstring n = JvNewStringUTF (s);
471 java::lang::ClassLoader *loader = NULL;
472 if (env->klass != NULL)
473 loader = env->klass->getClassLoader ();
475 if (loader == NULL)
477 // FIXME: should use getBaseClassLoader, but we don't have that
478 // yet.
479 loader = java::lang::ClassLoader::getSystemClassLoader ();
482 r = loader->loadClass (n);
484 catch (jthrowable t)
486 env->ex = t;
489 return (jclass) wrap_value (env, r);
492 static jclass
493 _Jv_JNI_GetSuperclass (JNIEnv *env, jclass clazz)
495 return (jclass) wrap_value (env, unwrap (clazz)->getSuperclass ());
498 static jboolean
499 _Jv_JNI_IsAssignableFrom(JNIEnv *, jclass clazz1, jclass clazz2)
501 return unwrap (clazz1)->isAssignableFrom (unwrap (clazz2));
504 static jint
505 _Jv_JNI_Throw (JNIEnv *env, jthrowable obj)
507 // We check in case the user did some funky cast.
508 obj = unwrap (obj);
509 JvAssert (obj != NULL && java::lang::Throwable::class$.isInstance (obj));
510 env->ex = obj;
511 return 0;
514 static jint
515 _Jv_JNI_ThrowNew (JNIEnv *env, jclass clazz, const char *message)
517 using namespace java::lang::reflect;
519 clazz = unwrap (clazz);
520 JvAssert (java::lang::Throwable::class$.isAssignableFrom (clazz));
522 int r = JNI_OK;
525 JArray<jclass> *argtypes
526 = (JArray<jclass> *) JvNewObjectArray (1, &java::lang::Class::class$,
527 NULL);
529 jclass *elts = elements (argtypes);
530 elts[0] = &StringClass;
532 Constructor *cons = clazz->getConstructor (argtypes);
534 jobjectArray values = JvNewObjectArray (1, &StringClass, NULL);
535 jobject *velts = elements (values);
536 velts[0] = JvNewStringUTF (message);
538 jobject obj = cons->newInstance (values);
540 env->ex = reinterpret_cast<jthrowable> (obj);
542 catch (jthrowable t)
544 env->ex = t;
545 r = JNI_ERR;
548 return r;
551 static jthrowable
552 _Jv_JNI_ExceptionOccurred (JNIEnv *env)
554 return (jthrowable) wrap_value (env, env->ex);
557 static void
558 _Jv_JNI_ExceptionDescribe (JNIEnv *env)
560 if (env->ex != NULL)
561 env->ex->printStackTrace();
564 static void
565 _Jv_JNI_ExceptionClear (JNIEnv *env)
567 env->ex = NULL;
570 static jboolean
571 _Jv_JNI_ExceptionCheck (JNIEnv *env)
573 return env->ex != NULL;
576 static void
577 _Jv_JNI_FatalError (JNIEnv *, const char *message)
579 JvFail (message);
584 static jboolean
585 _Jv_JNI_IsSameObject (JNIEnv *, jobject obj1, jobject obj2)
587 return unwrap (obj1) == unwrap (obj2);
590 static jobject
591 _Jv_JNI_AllocObject (JNIEnv *env, jclass clazz)
593 jobject obj = NULL;
594 using namespace java::lang::reflect;
598 clazz = unwrap (clazz);
599 JvAssert (clazz && ! clazz->isArray ());
600 if (clazz->isInterface() || Modifier::isAbstract(clazz->getModifiers()))
601 env->ex = new java::lang::InstantiationException ();
602 else
604 // FIXME: will this work for String?
605 obj = JvAllocObject (clazz);
608 catch (jthrowable t)
610 env->ex = t;
613 return wrap_value (env, obj);
616 static jclass
617 _Jv_JNI_GetObjectClass (JNIEnv *env, jobject obj)
619 obj = unwrap (obj);
620 JvAssert (obj);
621 return (jclass) wrap_value (env, obj->getClass());
624 static jboolean
625 _Jv_JNI_IsInstanceOf (JNIEnv *, jobject obj, jclass clazz)
627 return unwrap (clazz)->isInstance(unwrap (obj));
633 // This section concerns method invocation.
636 template<jboolean is_static>
637 static jmethodID
638 _Jv_JNI_GetAnyMethodID (JNIEnv *env, jclass clazz,
639 const char *name, const char *sig)
643 clazz = unwrap (clazz);
644 _Jv_InitClass (clazz);
646 _Jv_Utf8Const *name_u = _Jv_makeUtf8Const ((char *) name, -1);
648 // FIXME: assume that SIG isn't too long.
649 int len = strlen (sig);
650 char s[len + 1];
651 for (int i = 0; i <= len; ++i)
652 s[i] = (sig[i] == '/') ? '.' : sig[i];
653 _Jv_Utf8Const *sig_u = _Jv_makeUtf8Const ((char *) s, -1);
655 JvAssert (! clazz->isPrimitive());
657 using namespace java::lang::reflect;
659 while (clazz != NULL)
661 jint count = JvNumMethods (clazz);
662 jmethodID meth = JvGetFirstMethod (clazz);
664 for (jint i = 0; i < count; ++i)
666 if (((is_static && Modifier::isStatic (meth->accflags))
667 || (! is_static && ! Modifier::isStatic (meth->accflags)))
668 && _Jv_equalUtf8Consts (meth->name, name_u)
669 && _Jv_equalUtf8Consts (meth->signature, sig_u))
670 return meth;
672 meth = meth->getNextMethod();
675 clazz = clazz->getSuperclass ();
678 env->ex = new java::lang::NoSuchMethodError ();
680 catch (jthrowable t)
682 env->ex = t;
685 return NULL;
688 // This is a helper function which turns a va_list into an array of
689 // `jvalue's. It needs signature information in order to do its work.
690 // The array of values must already be allocated.
691 static void
692 array_from_valist (jvalue *values, JArray<jclass> *arg_types, va_list vargs)
694 jclass *arg_elts = elements (arg_types);
695 for (int i = 0; i < arg_types->length; ++i)
697 if (arg_elts[i] == JvPrimClass (byte))
698 values[i].b = (jbyte) va_arg (vargs, int);
699 else if (arg_elts[i] == JvPrimClass (short))
700 values[i].s = (jshort) va_arg (vargs, int);
701 else if (arg_elts[i] == JvPrimClass (int))
702 values[i].i = va_arg (vargs, jint);
703 else if (arg_elts[i] == JvPrimClass (long))
704 values[i].j = va_arg (vargs, jlong);
705 else if (arg_elts[i] == JvPrimClass (float))
706 values[i].f = va_arg (vargs, jfloat);
707 else if (arg_elts[i] == JvPrimClass (double))
708 values[i].d = va_arg (vargs, jdouble);
709 else if (arg_elts[i] == JvPrimClass (boolean))
710 values[i].z = (jboolean) va_arg (vargs, int);
711 else if (arg_elts[i] == JvPrimClass (char))
712 values[i].c = (jchar) va_arg (vargs, int);
713 else
715 // An object.
716 values[i].l = unwrap (va_arg (vargs, jobject));
721 // This can call any sort of method: virtual, "nonvirtual", static, or
722 // constructor.
723 template<typename T, invocation_type style>
724 static T
725 _Jv_JNI_CallAnyMethodV (JNIEnv *env, jobject obj, jclass klass,
726 jmethodID id, va_list vargs)
728 obj = unwrap (obj);
729 klass = unwrap (klass);
731 if (style == normal)
732 id = _Jv_LookupDeclaredMethod (obj->getClass (), id->name, id->signature);
734 jclass decl_class = klass ? klass : obj->getClass ();
735 JvAssert (decl_class != NULL);
737 jclass return_type;
738 JArray<jclass> *arg_types;
742 _Jv_GetTypesFromSignature (id, decl_class,
743 &arg_types, &return_type);
745 jvalue args[arg_types->length];
746 array_from_valist (args, arg_types, vargs);
748 // For constructors we need to pass the Class we are instantiating.
749 if (style == constructor)
750 return_type = klass;
752 jvalue result;
753 jthrowable ex = _Jv_CallAnyMethodA (obj, return_type, id,
754 style == constructor,
755 arg_types, args, &result);
757 if (ex != NULL)
758 env->ex = ex;
760 // We cheat a little here. FIXME.
761 return wrap_value (env, * (T *) &result);
763 catch (jthrowable t)
765 env->ex = t;
768 return wrap_value (env, (T) 0);
771 template<typename T, invocation_type style>
772 static T
773 _Jv_JNI_CallAnyMethod (JNIEnv *env, jobject obj, jclass klass,
774 jmethodID method, ...)
776 va_list args;
777 T result;
779 va_start (args, method);
780 result = _Jv_JNI_CallAnyMethodV<T, style> (env, obj, klass, method, args);
781 va_end (args);
783 return result;
786 template<typename T, invocation_type style>
787 static T
788 _Jv_JNI_CallAnyMethodA (JNIEnv *env, jobject obj, jclass klass,
789 jmethodID id, jvalue *args)
791 obj = unwrap (obj);
792 klass = unwrap (klass);
794 if (style == normal)
795 id = _Jv_LookupDeclaredMethod (obj->getClass (), id->name, id->signature);
797 jclass decl_class = klass ? klass : obj->getClass ();
798 JvAssert (decl_class != NULL);
800 jclass return_type;
801 JArray<jclass> *arg_types;
804 _Jv_GetTypesFromSignature (id, decl_class,
805 &arg_types, &return_type);
807 // For constructors we need to pass the Class we are instantiating.
808 if (style == constructor)
809 return_type = klass;
811 // Unwrap arguments as required. Eww.
812 jclass *type_elts = elements (arg_types);
813 jvalue arg_copy[arg_types->length];
814 for (int i = 0; i < arg_types->length; ++i)
816 if (type_elts[i]->isPrimitive ())
817 arg_copy[i] = args[i];
818 else
819 arg_copy[i].l = unwrap (args[i].l);
822 jvalue result;
823 jthrowable ex = _Jv_CallAnyMethodA (obj, return_type, id,
824 style == constructor,
825 arg_types, arg_copy, &result);
827 if (ex != NULL)
828 env->ex = ex;
830 // We cheat a little here. FIXME.
831 return wrap_value (env, * (T *) &result);
833 catch (jthrowable t)
835 env->ex = t;
838 return wrap_value (env, (T) 0);
841 template<invocation_type style>
842 static void
843 _Jv_JNI_CallAnyVoidMethodV (JNIEnv *env, jobject obj, jclass klass,
844 jmethodID id, va_list vargs)
846 obj = unwrap (obj);
847 klass = unwrap (klass);
849 if (style == normal)
850 id = _Jv_LookupDeclaredMethod (obj->getClass (), id->name, id->signature);
852 jclass decl_class = klass ? klass : obj->getClass ();
853 JvAssert (decl_class != NULL);
855 jclass return_type;
856 JArray<jclass> *arg_types;
859 _Jv_GetTypesFromSignature (id, decl_class,
860 &arg_types, &return_type);
862 jvalue args[arg_types->length];
863 array_from_valist (args, arg_types, vargs);
865 // For constructors we need to pass the Class we are instantiating.
866 if (style == constructor)
867 return_type = klass;
869 jthrowable ex = _Jv_CallAnyMethodA (obj, return_type, id,
870 style == constructor,
871 arg_types, args, NULL);
873 if (ex != NULL)
874 env->ex = ex;
876 catch (jthrowable t)
878 env->ex = t;
882 template<invocation_type style>
883 static void
884 _Jv_JNI_CallAnyVoidMethod (JNIEnv *env, jobject obj, jclass klass,
885 jmethodID method, ...)
887 va_list args;
889 va_start (args, method);
890 _Jv_JNI_CallAnyVoidMethodV<style> (env, obj, klass, method, args);
891 va_end (args);
894 template<invocation_type style>
895 static void
896 _Jv_JNI_CallAnyVoidMethodA (JNIEnv *env, jobject obj, jclass klass,
897 jmethodID id, jvalue *args)
899 if (style == normal)
900 id = _Jv_LookupDeclaredMethod (obj->getClass (), id->name, id->signature);
902 jclass decl_class = klass ? klass : obj->getClass ();
903 JvAssert (decl_class != NULL);
905 jclass return_type;
906 JArray<jclass> *arg_types;
909 _Jv_GetTypesFromSignature (id, decl_class,
910 &arg_types, &return_type);
912 // Unwrap arguments as required. Eww.
913 jclass *type_elts = elements (arg_types);
914 jvalue arg_copy[arg_types->length];
915 for (int i = 0; i < arg_types->length; ++i)
917 if (type_elts[i]->isPrimitive ())
918 arg_copy[i] = args[i];
919 else
920 arg_copy[i].l = unwrap (args[i].l);
923 jthrowable ex = _Jv_CallAnyMethodA (obj, return_type, id,
924 style == constructor,
925 arg_types, args, NULL);
927 if (ex != NULL)
928 env->ex = ex;
930 catch (jthrowable t)
932 env->ex = t;
936 // Functions with this signature are used to implement functions in
937 // the CallMethod family.
938 template<typename T>
939 static T
940 _Jv_JNI_CallMethodV (JNIEnv *env, jobject obj, jmethodID id, va_list args)
942 return _Jv_JNI_CallAnyMethodV<T, normal> (env, obj, NULL, id, args);
945 // Functions with this signature are used to implement functions in
946 // the CallMethod family.
947 template<typename T>
948 static T
949 _Jv_JNI_CallMethod (JNIEnv *env, jobject obj, jmethodID id, ...)
951 va_list args;
952 T result;
954 va_start (args, id);
955 result = _Jv_JNI_CallAnyMethodV<T, normal> (env, obj, NULL, id, args);
956 va_end (args);
958 return result;
961 // Functions with this signature are used to implement functions in
962 // the CallMethod family.
963 template<typename T>
964 static T
965 _Jv_JNI_CallMethodA (JNIEnv *env, jobject obj, jmethodID id, jvalue *args)
967 return _Jv_JNI_CallAnyMethodA<T, normal> (env, obj, NULL, id, args);
970 static void
971 _Jv_JNI_CallVoidMethodV (JNIEnv *env, jobject obj, jmethodID id, va_list args)
973 _Jv_JNI_CallAnyVoidMethodV<normal> (env, obj, NULL, id, args);
976 static void
977 _Jv_JNI_CallVoidMethod (JNIEnv *env, jobject obj, jmethodID id, ...)
979 va_list args;
981 va_start (args, id);
982 _Jv_JNI_CallAnyVoidMethodV<normal> (env, obj, NULL, id, args);
983 va_end (args);
986 static void
987 _Jv_JNI_CallVoidMethodA (JNIEnv *env, jobject obj, jmethodID id, jvalue *args)
989 _Jv_JNI_CallAnyVoidMethodA<normal> (env, obj, NULL, id, args);
992 // Functions with this signature are used to implement functions in
993 // the CallStaticMethod family.
994 template<typename T>
995 static T
996 _Jv_JNI_CallStaticMethodV (JNIEnv *env, jclass klass,
997 jmethodID id, va_list args)
999 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1000 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1002 return _Jv_JNI_CallAnyMethodV<T, static_type> (env, NULL, klass, id, args);
1005 // Functions with this signature are used to implement functions in
1006 // the CallStaticMethod family.
1007 template<typename T>
1008 static T
1009 _Jv_JNI_CallStaticMethod (JNIEnv *env, jclass klass, jmethodID id, ...)
1011 va_list args;
1012 T result;
1014 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1015 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1017 va_start (args, id);
1018 result = _Jv_JNI_CallAnyMethodV<T, static_type> (env, NULL, klass,
1019 id, args);
1020 va_end (args);
1022 return result;
1025 // Functions with this signature are used to implement functions in
1026 // the CallStaticMethod family.
1027 template<typename T>
1028 static T
1029 _Jv_JNI_CallStaticMethodA (JNIEnv *env, jclass klass, jmethodID id,
1030 jvalue *args)
1032 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1033 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1035 return _Jv_JNI_CallAnyMethodA<T, static_type> (env, NULL, klass, id, args);
1038 static void
1039 _Jv_JNI_CallStaticVoidMethodV (JNIEnv *env, jclass klass, jmethodID id,
1040 va_list args)
1042 _Jv_JNI_CallAnyVoidMethodV<static_type> (env, NULL, klass, id, args);
1045 static void
1046 _Jv_JNI_CallStaticVoidMethod (JNIEnv *env, jclass klass, jmethodID id, ...)
1048 va_list args;
1050 va_start (args, id);
1051 _Jv_JNI_CallAnyVoidMethodV<static_type> (env, NULL, klass, id, args);
1052 va_end (args);
1055 static void
1056 _Jv_JNI_CallStaticVoidMethodA (JNIEnv *env, jclass klass, jmethodID id,
1057 jvalue *args)
1059 _Jv_JNI_CallAnyVoidMethodA<static_type> (env, NULL, klass, id, args);
1062 static jobject
1063 _Jv_JNI_NewObjectV (JNIEnv *env, jclass klass,
1064 jmethodID id, va_list args)
1066 JvAssert (klass && ! klass->isArray ());
1067 JvAssert (! strcmp (id->name->data, "<init>")
1068 && id->signature->length > 2
1069 && id->signature->data[0] == '('
1070 && ! strcmp (&id->signature->data[id->signature->length - 2],
1071 ")V"));
1073 return _Jv_JNI_CallAnyMethodV<jobject, constructor> (env, NULL, klass,
1074 id, args);
1077 static jobject
1078 _Jv_JNI_NewObject (JNIEnv *env, jclass klass, jmethodID id, ...)
1080 JvAssert (klass && ! klass->isArray ());
1081 JvAssert (! strcmp (id->name->data, "<init>")
1082 && id->signature->length > 2
1083 && id->signature->data[0] == '('
1084 && ! strcmp (&id->signature->data[id->signature->length - 2],
1085 ")V"));
1087 va_list args;
1088 jobject result;
1090 va_start (args, id);
1091 result = _Jv_JNI_CallAnyMethodV<jobject, constructor> (env, NULL, klass,
1092 id, args);
1093 va_end (args);
1095 return result;
1098 static jobject
1099 _Jv_JNI_NewObjectA (JNIEnv *env, jclass klass, jmethodID id,
1100 jvalue *args)
1102 JvAssert (klass && ! klass->isArray ());
1103 JvAssert (! strcmp (id->name->data, "<init>")
1104 && id->signature->length > 2
1105 && id->signature->data[0] == '('
1106 && ! strcmp (&id->signature->data[id->signature->length - 2],
1107 ")V"));
1109 return _Jv_JNI_CallAnyMethodA<jobject, constructor> (env, NULL, klass,
1110 id, args);
1115 template<typename T>
1116 static T
1117 _Jv_JNI_GetField (JNIEnv *env, jobject obj, jfieldID field)
1119 obj = unwrap (obj);
1120 JvAssert (obj);
1121 T *ptr = (T *) ((char *) obj + field->getOffset ());
1122 return wrap_value (env, *ptr);
1125 template<typename T>
1126 static void
1127 _Jv_JNI_SetField (JNIEnv *, jobject obj, jfieldID field, T value)
1129 obj = unwrap (obj);
1130 value = unwrap (value);
1132 JvAssert (obj);
1133 T *ptr = (T *) ((char *) obj + field->getOffset ());
1134 *ptr = value;
1137 template<jboolean is_static>
1138 static jfieldID
1139 _Jv_JNI_GetAnyFieldID (JNIEnv *env, jclass clazz,
1140 const char *name, const char *sig)
1144 clazz = unwrap (clazz);
1146 _Jv_InitClass (clazz);
1148 _Jv_Utf8Const *a_name = _Jv_makeUtf8Const ((char *) name, -1);
1150 // FIXME: assume that SIG isn't too long.
1151 int len = strlen (sig);
1152 char s[len + 1];
1153 for (int i = 0; i <= len; ++i)
1154 s[i] = (sig[i] == '/') ? '.' : sig[i];
1155 jclass field_class = _Jv_FindClassFromSignature ((char *) s, NULL);
1157 // FIXME: what if field_class == NULL?
1159 java::lang::ClassLoader *loader = clazz->getClassLoader ();
1160 while (clazz != NULL)
1162 // We acquire the class lock so that fields aren't resolved
1163 // while we are running.
1164 JvSynchronize sync (clazz);
1166 jint count = (is_static
1167 ? JvNumStaticFields (clazz)
1168 : JvNumInstanceFields (clazz));
1169 jfieldID field = (is_static
1170 ? JvGetFirstStaticField (clazz)
1171 : JvGetFirstInstanceField (clazz));
1172 for (jint i = 0; i < count; ++i)
1174 _Jv_Utf8Const *f_name = field->getNameUtf8Const(clazz);
1176 // The field might be resolved or it might not be. It
1177 // is much simpler to always resolve it.
1178 _Jv_ResolveField (field, loader);
1179 if (_Jv_equalUtf8Consts (f_name, a_name)
1180 && field->getClass() == field_class)
1181 return field;
1183 field = field->getNextField ();
1186 clazz = clazz->getSuperclass ();
1189 env->ex = new java::lang::NoSuchFieldError ();
1191 catch (jthrowable t)
1193 env->ex = t;
1195 return NULL;
1198 template<typename T>
1199 static T
1200 _Jv_JNI_GetStaticField (JNIEnv *env, jclass, jfieldID field)
1202 T *ptr = (T *) field->u.addr;
1203 return wrap_value (env, *ptr);
1206 template<typename T>
1207 static void
1208 _Jv_JNI_SetStaticField (JNIEnv *, jclass, jfieldID field, T value)
1210 value = unwrap (value);
1211 T *ptr = (T *) field->u.addr;
1212 *ptr = value;
1215 static jstring
1216 _Jv_JNI_NewString (JNIEnv *env, const jchar *unichars, jsize len)
1220 jstring r = _Jv_NewString (unichars, len);
1221 return (jstring) wrap_value (env, r);
1223 catch (jthrowable t)
1225 env->ex = t;
1226 return NULL;
1230 static jsize
1231 _Jv_JNI_GetStringLength (JNIEnv *, jstring string)
1233 return unwrap (string)->length();
1236 static const jchar *
1237 _Jv_JNI_GetStringChars (JNIEnv *, jstring string, jboolean *isCopy)
1239 string = unwrap (string);
1240 jchar *result = _Jv_GetStringChars (string);
1241 mark_for_gc (string, global_ref_table);
1242 if (isCopy)
1243 *isCopy = false;
1244 return (const jchar *) result;
1247 static void
1248 _Jv_JNI_ReleaseStringChars (JNIEnv *, jstring string, const jchar *)
1250 unmark_for_gc (unwrap (string), global_ref_table);
1253 static jstring
1254 _Jv_JNI_NewStringUTF (JNIEnv *env, const char *bytes)
1258 jstring result = JvNewStringUTF (bytes);
1259 return (jstring) wrap_value (env, result);
1261 catch (jthrowable t)
1263 env->ex = t;
1264 return NULL;
1268 static jsize
1269 _Jv_JNI_GetStringUTFLength (JNIEnv *, jstring string)
1271 return JvGetStringUTFLength (unwrap (string));
1274 static const char *
1275 _Jv_JNI_GetStringUTFChars (JNIEnv *env, jstring string, jboolean *isCopy)
1277 string = unwrap (string);
1278 jsize len = JvGetStringUTFLength (string);
1281 char *r = (char *) _Jv_Malloc (len + 1);
1282 JvGetStringUTFRegion (string, 0, len, r);
1283 r[len] = '\0';
1285 if (isCopy)
1286 *isCopy = true;
1288 return (const char *) r;
1290 catch (jthrowable t)
1292 env->ex = t;
1293 return NULL;
1297 static void
1298 _Jv_JNI_ReleaseStringUTFChars (JNIEnv *, jstring, const char *utf)
1300 _Jv_Free ((void *) utf);
1303 static void
1304 _Jv_JNI_GetStringRegion (JNIEnv *env, jstring string, jsize start, jsize len,
1305 jchar *buf)
1307 string = unwrap (string);
1308 jchar *result = _Jv_GetStringChars (string);
1309 if (start < 0 || start > string->length ()
1310 || len < 0 || start + len > string->length ())
1314 env->ex = new java::lang::StringIndexOutOfBoundsException ();
1316 catch (jthrowable t)
1318 env->ex = t;
1321 else
1322 memcpy (buf, &result[start], len * sizeof (jchar));
1325 static void
1326 _Jv_JNI_GetStringUTFRegion (JNIEnv *env, jstring str, jsize start,
1327 jsize len, char *buf)
1329 str = unwrap (str);
1331 if (start < 0 || start > str->length ()
1332 || len < 0 || start + len > str->length ())
1336 env->ex = new java::lang::StringIndexOutOfBoundsException ();
1338 catch (jthrowable t)
1340 env->ex = t;
1343 else
1344 _Jv_GetStringUTFRegion (str, start, len, buf);
1347 static const jchar *
1348 _Jv_JNI_GetStringCritical (JNIEnv *, jstring str, jboolean *isCopy)
1350 jchar *result = _Jv_GetStringChars (unwrap (str));
1351 if (isCopy)
1352 *isCopy = false;
1353 return result;
1356 static void
1357 _Jv_JNI_ReleaseStringCritical (JNIEnv *, jstring, const jchar *)
1359 // Nothing.
1362 static jsize
1363 _Jv_JNI_GetArrayLength (JNIEnv *, jarray array)
1365 return unwrap (array)->length;
1368 static jarray
1369 _Jv_JNI_NewObjectArray (JNIEnv *env, jsize length, jclass elementClass,
1370 jobject init)
1374 elementClass = unwrap (elementClass);
1375 init = unwrap (init);
1377 jarray result = JvNewObjectArray (length, elementClass, init);
1378 return (jarray) wrap_value (env, result);
1380 catch (jthrowable t)
1382 env->ex = t;
1383 return NULL;
1387 static jobject
1388 _Jv_JNI_GetObjectArrayElement (JNIEnv *env, jobjectArray array, jsize index)
1390 jobject *elts = elements (unwrap (array));
1391 return wrap_value (env, elts[index]);
1394 static void
1395 _Jv_JNI_SetObjectArrayElement (JNIEnv *env, jobjectArray array, jsize index,
1396 jobject value)
1400 array = unwrap (array);
1401 value = unwrap (value);
1403 _Jv_CheckArrayStore (array, value);
1404 jobject *elts = elements (array);
1405 elts[index] = value;
1407 catch (jthrowable t)
1409 env->ex = t;
1413 template<typename T, jclass K>
1414 static JArray<T> *
1415 _Jv_JNI_NewPrimitiveArray (JNIEnv *env, jsize length)
1419 return (JArray<T> *) wrap_value (env, _Jv_NewPrimArray (K, length));
1421 catch (jthrowable t)
1423 env->ex = t;
1424 return NULL;
1428 template<typename T>
1429 static T *
1430 _Jv_JNI_GetPrimitiveArrayElements (JNIEnv *, JArray<T> *array,
1431 jboolean *isCopy)
1433 array = unwrap (array);
1434 T *elts = elements (array);
1435 if (isCopy)
1437 // We elect never to copy.
1438 *isCopy = false;
1440 mark_for_gc (array, global_ref_table);
1441 return elts;
1444 template<typename T>
1445 static void
1446 _Jv_JNI_ReleasePrimitiveArrayElements (JNIEnv *, JArray<T> *array,
1447 T *, jint /* mode */)
1449 array = unwrap (array);
1450 // Note that we ignore MODE. We can do this because we never copy
1451 // the array elements. My reading of the JNI documentation is that
1452 // this is an option for the implementor.
1453 unmark_for_gc (array, global_ref_table);
1456 template<typename T>
1457 static void
1458 _Jv_JNI_GetPrimitiveArrayRegion (JNIEnv *env, JArray<T> *array,
1459 jsize start, jsize len,
1460 T *buf)
1462 array = unwrap (array);
1464 // The cast to unsigned lets us save a comparison.
1465 if (start < 0 || len < 0
1466 || (unsigned long) (start + len) > (unsigned long) array->length)
1470 // FIXME: index.
1471 env->ex = new java::lang::ArrayIndexOutOfBoundsException ();
1473 catch (jthrowable t)
1475 // Could have thown out of memory error.
1476 env->ex = t;
1479 else
1481 T *elts = elements (array) + start;
1482 memcpy (buf, elts, len * sizeof (T));
1486 template<typename T>
1487 static void
1488 _Jv_JNI_SetPrimitiveArrayRegion (JNIEnv *env, JArray<T> *array,
1489 jsize start, jsize len, T *buf)
1491 array = unwrap (array);
1493 // The cast to unsigned lets us save a comparison.
1494 if (start < 0 || len < 0
1495 || (unsigned long) (start + len) > (unsigned long) array->length)
1499 // FIXME: index.
1500 env->ex = new java::lang::ArrayIndexOutOfBoundsException ();
1502 catch (jthrowable t)
1504 env->ex = t;
1507 else
1509 T *elts = elements (array) + start;
1510 memcpy (elts, buf, len * sizeof (T));
1514 static void *
1515 _Jv_JNI_GetPrimitiveArrayCritical (JNIEnv *, jarray array,
1516 jboolean *isCopy)
1518 array = unwrap (array);
1519 // FIXME: does this work?
1520 jclass klass = array->getClass()->getComponentType();
1521 JvAssert (klass->isPrimitive ());
1522 char *r = _Jv_GetArrayElementFromElementType (array, klass);
1523 if (isCopy)
1524 *isCopy = false;
1525 return r;
1528 static void
1529 _Jv_JNI_ReleasePrimitiveArrayCritical (JNIEnv *, jarray, void *, jint)
1531 // Nothing.
1534 static jint
1535 _Jv_JNI_MonitorEnter (JNIEnv *env, jobject obj)
1539 _Jv_MonitorEnter (unwrap (obj));
1540 return 0;
1542 catch (jthrowable t)
1544 env->ex = t;
1546 return JNI_ERR;
1549 static jint
1550 _Jv_JNI_MonitorExit (JNIEnv *env, jobject obj)
1554 _Jv_MonitorExit (unwrap (obj));
1555 return 0;
1557 catch (jthrowable t)
1559 env->ex = t;
1561 return JNI_ERR;
1564 // JDK 1.2
1565 jobject
1566 _Jv_JNI_ToReflectedField (JNIEnv *env, jclass cls, jfieldID fieldID,
1567 jboolean)
1571 cls = unwrap (cls);
1572 java::lang::reflect::Field *field = new java::lang::reflect::Field();
1573 field->declaringClass = cls;
1574 field->offset = (char*) fieldID - (char *) cls->fields;
1575 field->name = _Jv_NewStringUtf8Const (fieldID->getNameUtf8Const (cls));
1576 return wrap_value (env, field);
1578 catch (jthrowable t)
1580 env->ex = t;
1582 return NULL;
1585 // JDK 1.2
1586 static jfieldID
1587 _Jv_JNI_FromReflectedField (JNIEnv *, jobject f)
1589 using namespace java::lang::reflect;
1591 f = unwrap (f);
1592 Field *field = reinterpret_cast<Field *> (f);
1593 return _Jv_FromReflectedField (field);
1596 jobject
1597 _Jv_JNI_ToReflectedMethod (JNIEnv *env, jclass klass, jmethodID id,
1598 jboolean)
1600 using namespace java::lang::reflect;
1602 jobject result = NULL;
1603 klass = unwrap (klass);
1607 if (_Jv_equalUtf8Consts (id->name, init_name))
1609 // A constructor.
1610 Constructor *cons = new Constructor ();
1611 cons->offset = (char *) id - (char *) &klass->methods;
1612 cons->declaringClass = klass;
1613 result = cons;
1615 else
1617 Method *meth = new Method ();
1618 meth->offset = (char *) id - (char *) &klass->methods;
1619 meth->declaringClass = klass;
1620 result = meth;
1623 catch (jthrowable t)
1625 env->ex = t;
1628 return wrap_value (env, result);
1631 static jmethodID
1632 _Jv_JNI_FromReflectedMethod (JNIEnv *, jobject method)
1634 using namespace java::lang::reflect;
1635 method = unwrap (method);
1636 if (Method::class$.isInstance (method))
1637 return _Jv_FromReflectedMethod (reinterpret_cast<Method *> (method));
1638 return
1639 _Jv_FromReflectedConstructor (reinterpret_cast<Constructor *> (method));
1642 // JDK 1.2.
1643 jweak
1644 _Jv_JNI_NewWeakGlobalRef (JNIEnv *env, jobject obj)
1646 using namespace gnu::gcj::runtime;
1647 JNIWeakRef *ref = NULL;
1651 // This seems weird but I think it is correct.
1652 obj = unwrap (obj);
1653 ref = new JNIWeakRef (obj);
1654 mark_for_gc (ref, global_ref_table);
1656 catch (jthrowable t)
1658 env->ex = t;
1661 return reinterpret_cast<jweak> (ref);
1664 void
1665 _Jv_JNI_DeleteWeakGlobalRef (JNIEnv *, jweak obj)
1667 using namespace gnu::gcj::runtime;
1668 JNIWeakRef *ref = reinterpret_cast<JNIWeakRef *> (obj);
1669 unmark_for_gc (ref, global_ref_table);
1670 ref->clear ();
1675 // Hash table of native methods.
1676 static JNINativeMethod *nathash;
1677 // Number of slots used.
1678 static int nathash_count = 0;
1679 // Number of slots available. Must be power of 2.
1680 static int nathash_size = 0;
1682 #define DELETED_ENTRY ((char *) (~0))
1684 // Compute a hash value for a native method descriptor.
1685 static int
1686 hash (const JNINativeMethod *method)
1688 char *ptr;
1689 int hash = 0;
1691 ptr = method->name;
1692 while (*ptr)
1693 hash = (31 * hash) + *ptr++;
1695 ptr = method->signature;
1696 while (*ptr)
1697 hash = (31 * hash) + *ptr++;
1699 return hash;
1702 // Find the slot where a native method goes.
1703 static JNINativeMethod *
1704 nathash_find_slot (const JNINativeMethod *method)
1706 jint h = hash (method);
1707 int step = (h ^ (h >> 16)) | 1;
1708 int w = h & (nathash_size - 1);
1709 int del = -1;
1711 for (;;)
1713 JNINativeMethod *slotp = &nathash[w];
1714 if (slotp->name == NULL)
1716 if (del >= 0)
1717 return &nathash[del];
1718 else
1719 return slotp;
1721 else if (slotp->name == DELETED_ENTRY)
1722 del = w;
1723 else if (! strcmp (slotp->name, method->name)
1724 && ! strcmp (slotp->signature, method->signature))
1725 return slotp;
1726 w = (w + step) & (nathash_size - 1);
1730 // Find a method. Return NULL if it isn't in the hash table.
1731 static void *
1732 nathash_find (JNINativeMethod *method)
1734 if (nathash == NULL)
1735 return NULL;
1736 JNINativeMethod *slot = nathash_find_slot (method);
1737 if (slot->name == NULL || slot->name == DELETED_ENTRY)
1738 return NULL;
1739 return slot->fnPtr;
1742 static void
1743 natrehash ()
1745 if (nathash == NULL)
1747 nathash_size = 1024;
1748 nathash =
1749 (JNINativeMethod *) _Jv_AllocBytes (nathash_size
1750 * sizeof (JNINativeMethod));
1751 memset (nathash, 0, nathash_size * sizeof (JNINativeMethod));
1753 else
1755 int savesize = nathash_size;
1756 JNINativeMethod *savehash = nathash;
1757 nathash_size *= 2;
1758 nathash =
1759 (JNINativeMethod *) _Jv_AllocBytes (nathash_size
1760 * sizeof (JNINativeMethod));
1761 memset (nathash, 0, nathash_size * sizeof (JNINativeMethod));
1763 for (int i = 0; i < savesize; ++i)
1765 if (savehash[i].name != NULL && savehash[i].name != DELETED_ENTRY)
1767 JNINativeMethod *slot = nathash_find_slot (&savehash[i]);
1768 *slot = savehash[i];
1774 static void
1775 nathash_add (const JNINativeMethod *method)
1777 if (3 * nathash_count >= 2 * nathash_size)
1778 natrehash ();
1779 JNINativeMethod *slot = nathash_find_slot (method);
1780 // If the slot has a real entry in it, then there is no work to do.
1781 if (slot->name != NULL && slot->name != DELETED_ENTRY)
1782 return;
1783 // FIXME
1784 slot->name = strdup (method->name);
1785 slot->signature = strdup (method->signature);
1786 slot->fnPtr = method->fnPtr;
1789 static jint
1790 _Jv_JNI_RegisterNatives (JNIEnv *env, jclass klass,
1791 const JNINativeMethod *methods,
1792 jint nMethods)
1794 // Synchronize while we do the work. This must match
1795 // synchronization in some other functions that manipulate or use
1796 // the nathash table.
1797 JvSynchronize sync (global_ref_table);
1799 // Look at each descriptor given us, and find the corresponding
1800 // method in the class.
1801 for (int j = 0; j < nMethods; ++j)
1803 bool found = false;
1805 _Jv_Method *imeths = JvGetFirstMethod (klass);
1806 for (int i = 0; i < JvNumMethods (klass); ++i)
1808 _Jv_Method *self = &imeths[i];
1810 if (! strcmp (self->name->data, methods[j].name)
1811 && ! strcmp (self->signature->data, methods[j].signature))
1813 if (! (self->accflags
1814 & java::lang::reflect::Modifier::NATIVE))
1815 break;
1817 // Found a match that is native.
1818 found = true;
1819 nathash_add (&methods[j]);
1821 break;
1825 if (! found)
1827 jstring m = JvNewStringUTF (methods[j].name);
1830 env->ex =new java::lang::NoSuchMethodError (m);
1832 catch (jthrowable t)
1834 env->ex = t;
1836 return JNI_ERR;
1840 return JNI_OK;
1843 static jint
1844 _Jv_JNI_UnregisterNatives (JNIEnv *, jclass)
1846 // FIXME -- we could implement this.
1847 return JNI_ERR;
1852 // Add a character to the buffer, encoding properly.
1853 static void
1854 add_char (char *buf, jchar c, int *here)
1856 if (c == '_')
1858 buf[(*here)++] = '_';
1859 buf[(*here)++] = '1';
1861 else if (c == ';')
1863 buf[(*here)++] = '_';
1864 buf[(*here)++] = '2';
1866 else if (c == '[')
1868 buf[(*here)++] = '_';
1869 buf[(*here)++] = '3';
1872 // Also check for `.' here because we might be passed an internal
1873 // qualified class name like `foo.bar'.
1874 else if (c == '/' || c == '.')
1875 buf[(*here)++] = '_';
1876 else if ((c >= '0' && c <= '9')
1877 || (c >= 'a' && c <= 'z')
1878 || (c >= 'A' && c <= 'Z'))
1879 buf[(*here)++] = (char) c;
1880 else
1882 // "Unicode" character.
1883 buf[(*here)++] = '_';
1884 buf[(*here)++] = '0';
1885 for (int i = 0; i < 4; ++i)
1887 int val = c & 0x0f;
1888 buf[(*here) + 3 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
1889 c >>= 4;
1891 *here += 4;
1895 // Compute a mangled name for a native function. This computes the
1896 // long name, and also returns an index which indicates where a NUL
1897 // can be placed to create the short name. This function assumes that
1898 // the buffer is large enough for its results.
1899 static void
1900 mangled_name (jclass klass, _Jv_Utf8Const *func_name,
1901 _Jv_Utf8Const *signature, char *buf, int *long_start)
1903 strcpy (buf, "Java_");
1904 int here = 5;
1906 // Add fully qualified class name.
1907 jchar *chars = _Jv_GetStringChars (klass->getName ());
1908 jint len = klass->getName ()->length ();
1909 for (int i = 0; i < len; ++i)
1910 add_char (buf, chars[i], &here);
1912 // Don't use add_char because we need a literal `_'.
1913 buf[here++] = '_';
1915 const unsigned char *fn = (const unsigned char *) func_name->data;
1916 const unsigned char *limit = fn + func_name->length;
1917 for (int i = 0; ; ++i)
1919 int ch = UTF8_GET (fn, limit);
1920 if (ch < 0)
1921 break;
1922 add_char (buf, ch, &here);
1925 // This is where the long signature begins.
1926 *long_start = here;
1927 buf[here++] = '_';
1928 buf[here++] = '_';
1930 const unsigned char *sig = (const unsigned char *) signature->data;
1931 limit = sig + signature->length;
1932 JvAssert (sig[0] == '(');
1933 ++sig;
1934 while (1)
1936 int ch = UTF8_GET (sig, limit);
1937 if (ch == ')' || ch < 0)
1938 break;
1939 add_char (buf, ch, &here);
1942 buf[here] = '\0';
1945 // Return the current thread's JNIEnv; if one does not exist, create
1946 // it. Also create a new system frame for use. This is `extern "C"'
1947 // because the compiler calls it.
1948 extern "C" JNIEnv *
1949 _Jv_GetJNIEnvNewFrame (jclass klass)
1951 JNIEnv *env = _Jv_GetCurrentJNIEnv ();
1952 if (env == NULL)
1954 env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
1955 env->p = &_Jv_JNIFunctions;
1956 env->ex = NULL;
1957 env->klass = klass;
1958 env->locals = NULL;
1960 _Jv_SetCurrentJNIEnv (env);
1963 _Jv_JNI_LocalFrame *frame
1964 = (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
1965 + (FRAME_SIZE
1966 * sizeof (jobject)));
1968 frame->marker = MARK_SYSTEM;
1969 frame->size = FRAME_SIZE;
1970 frame->next = env->locals;
1971 env->locals = frame;
1973 for (int i = 0; i < frame->size; ++i)
1974 frame->vec[i] = NULL;
1976 return env;
1979 // Return the function which implements a particular JNI method. If
1980 // we can't find the function, we throw the appropriate exception.
1981 // This is `extern "C"' because the compiler uses it.
1982 extern "C" void *
1983 _Jv_LookupJNIMethod (jclass klass, _Jv_Utf8Const *name,
1984 _Jv_Utf8Const *signature)
1986 char buf[10 + 6 * (name->length + signature->length)];
1987 int long_start;
1988 void *function;
1990 // Synchronize on something convenient. Right now we use the hash.
1991 JvSynchronize sync (global_ref_table);
1993 // First see if we have an override in the hash table.
1994 strncpy (buf, name->data, name->length);
1995 buf[name->length] = '\0';
1996 strncpy (buf + name->length + 1, signature->data, signature->length);
1997 buf[name->length + signature->length + 1] = '\0';
1998 JNINativeMethod meth;
1999 meth.name = buf;
2000 meth.signature = buf + name->length + 1;
2001 function = nathash_find (&meth);
2002 if (function != NULL)
2003 return function;
2005 // If there was no override, then look in the symbol table.
2006 mangled_name (klass, name, signature, buf, &long_start);
2007 char c = buf[long_start];
2008 buf[long_start] = '\0';
2009 function = _Jv_FindSymbolInExecutable (buf);
2010 if (function == NULL)
2012 buf[long_start] = c;
2013 function = _Jv_FindSymbolInExecutable (buf);
2014 if (function == NULL)
2016 jstring str = JvNewStringUTF (name->data);
2017 throw new java::lang::UnsatisfiedLinkError (str);
2021 return function;
2024 #ifdef INTERPRETER
2026 // This function is the stub which is used to turn an ordinary (CNI)
2027 // method call into a JNI call.
2028 void
2029 _Jv_JNIMethod::call (ffi_cif *, void *ret, ffi_raw *args, void *__this)
2031 _Jv_JNIMethod* _this = (_Jv_JNIMethod *) __this;
2033 JNIEnv *env = _Jv_GetJNIEnvNewFrame (_this->defining_class);
2035 // FIXME: we should mark every reference parameter as a local. For
2036 // now we assume a conservative GC, and we assume that the
2037 // references are on the stack somewhere.
2039 // We cache the value that we find, of course, but if we don't find
2040 // a value we don't cache that fact -- we might subsequently load a
2041 // library which finds the function in question.
2043 // Synchronize on a convenient object to ensure sanity in case two
2044 // threads reach this point for the same function at the same
2045 // time.
2046 JvSynchronize sync (global_ref_table);
2047 if (_this->function == NULL)
2048 _this->function = _Jv_LookupJNIMethod (_this->defining_class,
2049 _this->self->name,
2050 _this->self->signature);
2053 JvAssert (_this->args_raw_size % sizeof (ffi_raw) == 0);
2054 ffi_raw real_args[2 + _this->args_raw_size / sizeof (ffi_raw)];
2055 int offset = 0;
2057 // First argument is always the environment pointer.
2058 real_args[offset++].ptr = env;
2060 // For a static method, we pass in the Class. For non-static
2061 // methods, the `this' argument is already handled.
2062 if ((_this->self->accflags & java::lang::reflect::Modifier::STATIC))
2063 real_args[offset++].ptr = _this->defining_class;
2065 // In libgcj, the callee synchronizes.
2066 jobject sync = NULL;
2067 if ((_this->self->accflags & java::lang::reflect::Modifier::SYNCHRONIZED))
2069 if ((_this->self->accflags & java::lang::reflect::Modifier::STATIC))
2070 sync = _this->defining_class;
2071 else
2072 sync = (jobject) args[0].ptr;
2073 _Jv_MonitorEnter (sync);
2076 // Copy over passed-in arguments.
2077 memcpy (&real_args[offset], args, _this->args_raw_size);
2079 // The actual call to the JNI function.
2080 ffi_raw_call (&_this->jni_cif, (void (*)()) _this->function,
2081 ret, real_args);
2083 if (sync != NULL)
2084 _Jv_MonitorExit (sync);
2086 _Jv_JNI_PopSystemFrame (env);
2089 #endif /* INTERPRETER */
2094 // Invocation API.
2097 // An internal helper function.
2098 static jint
2099 _Jv_JNI_AttachCurrentThread (JavaVM *, jstring name, void **penv, void *args)
2101 JavaVMAttachArgs *attach = reinterpret_cast<JavaVMAttachArgs *> (args);
2102 java::lang::ThreadGroup *group = NULL;
2104 if (attach)
2106 // FIXME: do we really want to support 1.1?
2107 if (attach->version != JNI_VERSION_1_2
2108 && attach->version != JNI_VERSION_1_1)
2109 return JNI_EVERSION;
2111 JvAssert (java::lang::ThreadGroup::class$.isInstance (attach->group));
2112 group = reinterpret_cast<java::lang::ThreadGroup *> (attach->group);
2115 // Attaching an already-attached thread is a no-op.
2116 if (_Jv_GetCurrentJNIEnv () != NULL)
2117 return 0;
2119 JNIEnv *env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
2120 if (env == NULL)
2121 return JNI_ERR;
2122 env->p = &_Jv_JNIFunctions;
2123 env->ex = NULL;
2124 env->klass = NULL;
2125 env->locals
2126 = (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
2127 + (FRAME_SIZE
2128 * sizeof (jobject)));
2129 if (env->locals == NULL)
2131 _Jv_Free (env);
2132 return JNI_ERR;
2135 env->locals->marker = MARK_SYSTEM;
2136 env->locals->size = FRAME_SIZE;
2137 env->locals->next = NULL;
2139 for (int i = 0; i < env->locals->size; ++i)
2140 env->locals->vec[i] = NULL;
2142 *penv = reinterpret_cast<void *> (env);
2144 // This thread might already be a Java thread -- this function might
2145 // have been called simply to set the new JNIEnv.
2146 if (_Jv_ThreadCurrent () == NULL)
2150 _Jv_AttachCurrentThread (name, group);
2152 catch (jthrowable t)
2154 return JNI_ERR;
2157 _Jv_SetCurrentJNIEnv (env);
2159 return 0;
2162 // This is the one actually used by JNI.
2163 static jint
2164 _Jv_JNI_AttachCurrentThread (JavaVM *vm, void **penv, void *args)
2166 return _Jv_JNI_AttachCurrentThread (vm, NULL, penv, args);
2169 static jint
2170 _Jv_JNI_DestroyJavaVM (JavaVM *vm)
2172 JvAssert (the_vm && vm == the_vm);
2174 JNIEnv *env;
2175 if (_Jv_ThreadCurrent () != NULL)
2177 jstring main_name;
2178 // This sucks.
2181 main_name = JvNewStringLatin1 ("main");
2183 catch (jthrowable t)
2185 return JNI_ERR;
2188 jint r = _Jv_JNI_AttachCurrentThread (vm,
2189 main_name,
2190 reinterpret_cast<void **> (&env),
2191 NULL);
2192 if (r < 0)
2193 return r;
2195 else
2196 env = _Jv_GetCurrentJNIEnv ();
2198 _Jv_ThreadWait ();
2200 // Docs say that this always returns an error code.
2201 return JNI_ERR;
2204 jint
2205 _Jv_JNI_DetachCurrentThread (JavaVM *)
2207 jint code = _Jv_DetachCurrentThread ();
2208 return code ? JNI_EDETACHED : 0;
2211 static jint
2212 _Jv_JNI_GetEnv (JavaVM *, void **penv, jint version)
2214 if (_Jv_ThreadCurrent () == NULL)
2216 *penv = NULL;
2217 return JNI_EDETACHED;
2220 #ifdef ENABLE_JVMPI
2221 // Handle JVMPI requests.
2222 if (version == JVMPI_VERSION_1)
2224 *penv = (void *) &_Jv_JVMPI_Interface;
2225 return 0;
2227 #endif
2229 // FIXME: do we really want to support 1.1?
2230 if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_1)
2232 *penv = NULL;
2233 return JNI_EVERSION;
2236 *penv = (void *) _Jv_GetCurrentJNIEnv ();
2237 return 0;
2240 jint
2241 JNI_GetDefaultJavaVMInitArgs (void *args)
2243 jint version = * (jint *) args;
2244 // Here we only support 1.2.
2245 if (version != JNI_VERSION_1_2)
2246 return JNI_EVERSION;
2248 JavaVMInitArgs *ia = reinterpret_cast<JavaVMInitArgs *> (args);
2249 ia->version = JNI_VERSION_1_2;
2250 ia->nOptions = 0;
2251 ia->options = NULL;
2252 ia->ignoreUnrecognized = true;
2254 return 0;
2257 jint
2258 JNI_CreateJavaVM (JavaVM **vm, void **penv, void *args)
2260 JvAssert (! the_vm);
2262 _Jv_CreateJavaVM (NULL);
2264 // FIXME: synchronize
2265 JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
2266 if (nvm == NULL)
2267 return JNI_ERR;
2268 nvm->functions = &_Jv_JNI_InvokeFunctions;
2270 // Parse the arguments.
2271 if (args != NULL)
2273 jint version = * (jint *) args;
2274 // We only support 1.2.
2275 if (version != JNI_VERSION_1_2)
2276 return JNI_EVERSION;
2277 JavaVMInitArgs *ia = reinterpret_cast<JavaVMInitArgs *> (args);
2278 for (int i = 0; i < ia->nOptions; ++i)
2280 if (! strcmp (ia->options[i].optionString, "vfprintf")
2281 || ! strcmp (ia->options[i].optionString, "exit")
2282 || ! strcmp (ia->options[i].optionString, "abort"))
2284 // We are required to recognize these, but for now we
2285 // don't handle them in any way. FIXME.
2286 continue;
2288 else if (! strncmp (ia->options[i].optionString,
2289 "-verbose", sizeof ("-verbose") - 1))
2291 // We don't do anything with this option either. We
2292 // might want to make sure the argument is valid, but we
2293 // don't really care all that much for now.
2294 continue;
2296 else if (! strncmp (ia->options[i].optionString, "-D", 2))
2298 // FIXME.
2299 continue;
2301 else if (ia->ignoreUnrecognized)
2303 if (ia->options[i].optionString[0] == '_'
2304 || ! strncmp (ia->options[i].optionString, "-X", 2))
2305 continue;
2308 return JNI_ERR;
2312 jint r =_Jv_JNI_AttachCurrentThread (nvm, penv, NULL);
2313 if (r < 0)
2314 return r;
2316 the_vm = nvm;
2317 *vm = the_vm;
2319 return 0;
2322 jint
2323 JNI_GetCreatedJavaVMs (JavaVM **vm_buffer, jsize buf_len, jsize *n_vms)
2325 if (buf_len <= 0)
2326 return JNI_ERR;
2328 // We only support a single VM.
2329 if (the_vm != NULL)
2331 vm_buffer[0] = the_vm;
2332 *n_vms = 1;
2334 else
2335 *n_vms = 0;
2336 return 0;
2339 JavaVM *
2340 _Jv_GetJavaVM ()
2342 // FIXME: synchronize
2343 if (! the_vm)
2345 JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
2346 if (nvm != NULL)
2347 nvm->functions = &_Jv_JNI_InvokeFunctions;
2348 the_vm = nvm;
2351 // If this is a Java thread, we want to make sure it has an
2352 // associated JNIEnv.
2353 if (_Jv_ThreadCurrent () != NULL)
2355 void *ignore;
2356 _Jv_JNI_AttachCurrentThread (the_vm, &ignore, NULL);
2359 return the_vm;
2362 static jint
2363 _Jv_JNI_GetJavaVM (JNIEnv *, JavaVM **vm)
2365 *vm = _Jv_GetJavaVM ();
2366 return *vm == NULL ? JNI_ERR : JNI_OK;
2371 #define RESERVED NULL
2373 struct JNINativeInterface _Jv_JNIFunctions =
2375 RESERVED,
2376 RESERVED,
2377 RESERVED,
2378 RESERVED,
2379 _Jv_JNI_GetVersion, // GetVersion
2380 _Jv_JNI_DefineClass, // DefineClass
2381 _Jv_JNI_FindClass, // FindClass
2382 _Jv_JNI_FromReflectedMethod, // FromReflectedMethod
2383 _Jv_JNI_FromReflectedField, // FromReflectedField
2384 _Jv_JNI_ToReflectedMethod, // ToReflectedMethod
2385 _Jv_JNI_GetSuperclass, // GetSuperclass
2386 _Jv_JNI_IsAssignableFrom, // IsAssignableFrom
2387 _Jv_JNI_ToReflectedField, // ToReflectedField
2388 _Jv_JNI_Throw, // Throw
2389 _Jv_JNI_ThrowNew, // ThrowNew
2390 _Jv_JNI_ExceptionOccurred, // ExceptionOccurred
2391 _Jv_JNI_ExceptionDescribe, // ExceptionDescribe
2392 _Jv_JNI_ExceptionClear, // ExceptionClear
2393 _Jv_JNI_FatalError, // FatalError
2395 _Jv_JNI_PushLocalFrame, // PushLocalFrame
2396 _Jv_JNI_PopLocalFrame, // PopLocalFrame
2397 _Jv_JNI_NewGlobalRef, // NewGlobalRef
2398 _Jv_JNI_DeleteGlobalRef, // DeleteGlobalRef
2399 _Jv_JNI_DeleteLocalRef, // DeleteLocalRef
2401 _Jv_JNI_IsSameObject, // IsSameObject
2403 _Jv_JNI_NewLocalRef, // NewLocalRef
2404 _Jv_JNI_EnsureLocalCapacity, // EnsureLocalCapacity
2406 _Jv_JNI_AllocObject, // AllocObject
2407 _Jv_JNI_NewObject, // NewObject
2408 _Jv_JNI_NewObjectV, // NewObjectV
2409 _Jv_JNI_NewObjectA, // NewObjectA
2410 _Jv_JNI_GetObjectClass, // GetObjectClass
2411 _Jv_JNI_IsInstanceOf, // IsInstanceOf
2412 _Jv_JNI_GetAnyMethodID<false>, // GetMethodID
2414 _Jv_JNI_CallMethod<jobject>, // CallObjectMethod
2415 _Jv_JNI_CallMethodV<jobject>, // CallObjectMethodV
2416 _Jv_JNI_CallMethodA<jobject>, // CallObjectMethodA
2417 _Jv_JNI_CallMethod<jboolean>, // CallBooleanMethod
2418 _Jv_JNI_CallMethodV<jboolean>, // CallBooleanMethodV
2419 _Jv_JNI_CallMethodA<jboolean>, // CallBooleanMethodA
2420 _Jv_JNI_CallMethod<jbyte>, // CallByteMethod
2421 _Jv_JNI_CallMethodV<jbyte>, // CallByteMethodV
2422 _Jv_JNI_CallMethodA<jbyte>, // CallByteMethodA
2423 _Jv_JNI_CallMethod<jchar>, // CallCharMethod
2424 _Jv_JNI_CallMethodV<jchar>, // CallCharMethodV
2425 _Jv_JNI_CallMethodA<jchar>, // CallCharMethodA
2426 _Jv_JNI_CallMethod<jshort>, // CallShortMethod
2427 _Jv_JNI_CallMethodV<jshort>, // CallShortMethodV
2428 _Jv_JNI_CallMethodA<jshort>, // CallShortMethodA
2429 _Jv_JNI_CallMethod<jint>, // CallIntMethod
2430 _Jv_JNI_CallMethodV<jint>, // CallIntMethodV
2431 _Jv_JNI_CallMethodA<jint>, // CallIntMethodA
2432 _Jv_JNI_CallMethod<jlong>, // CallLongMethod
2433 _Jv_JNI_CallMethodV<jlong>, // CallLongMethodV
2434 _Jv_JNI_CallMethodA<jlong>, // CallLongMethodA
2435 _Jv_JNI_CallMethod<jfloat>, // CallFloatMethod
2436 _Jv_JNI_CallMethodV<jfloat>, // CallFloatMethodV
2437 _Jv_JNI_CallMethodA<jfloat>, // CallFloatMethodA
2438 _Jv_JNI_CallMethod<jdouble>, // CallDoubleMethod
2439 _Jv_JNI_CallMethodV<jdouble>, // CallDoubleMethodV
2440 _Jv_JNI_CallMethodA<jdouble>, // CallDoubleMethodA
2441 _Jv_JNI_CallVoidMethod, // CallVoidMethod
2442 _Jv_JNI_CallVoidMethodV, // CallVoidMethodV
2443 _Jv_JNI_CallVoidMethodA, // CallVoidMethodA
2445 // Nonvirtual method invocation functions follow.
2446 _Jv_JNI_CallAnyMethod<jobject, nonvirtual>, // CallNonvirtualObjectMethod
2447 _Jv_JNI_CallAnyMethodV<jobject, nonvirtual>, // CallNonvirtualObjectMethodV
2448 _Jv_JNI_CallAnyMethodA<jobject, nonvirtual>, // CallNonvirtualObjectMethodA
2449 _Jv_JNI_CallAnyMethod<jboolean, nonvirtual>, // CallNonvirtualBooleanMethod
2450 _Jv_JNI_CallAnyMethodV<jboolean, nonvirtual>, // CallNonvirtualBooleanMethodV
2451 _Jv_JNI_CallAnyMethodA<jboolean, nonvirtual>, // CallNonvirtualBooleanMethodA
2452 _Jv_JNI_CallAnyMethod<jbyte, nonvirtual>, // CallNonvirtualByteMethod
2453 _Jv_JNI_CallAnyMethodV<jbyte, nonvirtual>, // CallNonvirtualByteMethodV
2454 _Jv_JNI_CallAnyMethodA<jbyte, nonvirtual>, // CallNonvirtualByteMethodA
2455 _Jv_JNI_CallAnyMethod<jchar, nonvirtual>, // CallNonvirtualCharMethod
2456 _Jv_JNI_CallAnyMethodV<jchar, nonvirtual>, // CallNonvirtualCharMethodV
2457 _Jv_JNI_CallAnyMethodA<jchar, nonvirtual>, // CallNonvirtualCharMethodA
2458 _Jv_JNI_CallAnyMethod<jshort, nonvirtual>, // CallNonvirtualShortMethod
2459 _Jv_JNI_CallAnyMethodV<jshort, nonvirtual>, // CallNonvirtualShortMethodV
2460 _Jv_JNI_CallAnyMethodA<jshort, nonvirtual>, // CallNonvirtualShortMethodA
2461 _Jv_JNI_CallAnyMethod<jint, nonvirtual>, // CallNonvirtualIntMethod
2462 _Jv_JNI_CallAnyMethodV<jint, nonvirtual>, // CallNonvirtualIntMethodV
2463 _Jv_JNI_CallAnyMethodA<jint, nonvirtual>, // CallNonvirtualIntMethodA
2464 _Jv_JNI_CallAnyMethod<jlong, nonvirtual>, // CallNonvirtualLongMethod
2465 _Jv_JNI_CallAnyMethodV<jlong, nonvirtual>, // CallNonvirtualLongMethodV
2466 _Jv_JNI_CallAnyMethodA<jlong, nonvirtual>, // CallNonvirtualLongMethodA
2467 _Jv_JNI_CallAnyMethod<jfloat, nonvirtual>, // CallNonvirtualFloatMethod
2468 _Jv_JNI_CallAnyMethodV<jfloat, nonvirtual>, // CallNonvirtualFloatMethodV
2469 _Jv_JNI_CallAnyMethodA<jfloat, nonvirtual>, // CallNonvirtualFloatMethodA
2470 _Jv_JNI_CallAnyMethod<jdouble, nonvirtual>, // CallNonvirtualDoubleMethod
2471 _Jv_JNI_CallAnyMethodV<jdouble, nonvirtual>, // CallNonvirtualDoubleMethodV
2472 _Jv_JNI_CallAnyMethodA<jdouble, nonvirtual>, // CallNonvirtualDoubleMethodA
2473 _Jv_JNI_CallAnyVoidMethod<nonvirtual>, // CallNonvirtualVoidMethod
2474 _Jv_JNI_CallAnyVoidMethodV<nonvirtual>, // CallNonvirtualVoidMethodV
2475 _Jv_JNI_CallAnyVoidMethodA<nonvirtual>, // CallNonvirtualVoidMethodA
2477 _Jv_JNI_GetAnyFieldID<false>, // GetFieldID
2478 _Jv_JNI_GetField<jobject>, // GetObjectField
2479 _Jv_JNI_GetField<jboolean>, // GetBooleanField
2480 _Jv_JNI_GetField<jbyte>, // GetByteField
2481 _Jv_JNI_GetField<jchar>, // GetCharField
2482 _Jv_JNI_GetField<jshort>, // GetShortField
2483 _Jv_JNI_GetField<jint>, // GetIntField
2484 _Jv_JNI_GetField<jlong>, // GetLongField
2485 _Jv_JNI_GetField<jfloat>, // GetFloatField
2486 _Jv_JNI_GetField<jdouble>, // GetDoubleField
2487 _Jv_JNI_SetField, // SetObjectField
2488 _Jv_JNI_SetField, // SetBooleanField
2489 _Jv_JNI_SetField, // SetByteField
2490 _Jv_JNI_SetField, // SetCharField
2491 _Jv_JNI_SetField, // SetShortField
2492 _Jv_JNI_SetField, // SetIntField
2493 _Jv_JNI_SetField, // SetLongField
2494 _Jv_JNI_SetField, // SetFloatField
2495 _Jv_JNI_SetField, // SetDoubleField
2496 _Jv_JNI_GetAnyMethodID<true>, // GetStaticMethodID
2498 _Jv_JNI_CallStaticMethod<jobject>, // CallStaticObjectMethod
2499 _Jv_JNI_CallStaticMethodV<jobject>, // CallStaticObjectMethodV
2500 _Jv_JNI_CallStaticMethodA<jobject>, // CallStaticObjectMethodA
2501 _Jv_JNI_CallStaticMethod<jboolean>, // CallStaticBooleanMethod
2502 _Jv_JNI_CallStaticMethodV<jboolean>, // CallStaticBooleanMethodV
2503 _Jv_JNI_CallStaticMethodA<jboolean>, // CallStaticBooleanMethodA
2504 _Jv_JNI_CallStaticMethod<jbyte>, // CallStaticByteMethod
2505 _Jv_JNI_CallStaticMethodV<jbyte>, // CallStaticByteMethodV
2506 _Jv_JNI_CallStaticMethodA<jbyte>, // CallStaticByteMethodA
2507 _Jv_JNI_CallStaticMethod<jchar>, // CallStaticCharMethod
2508 _Jv_JNI_CallStaticMethodV<jchar>, // CallStaticCharMethodV
2509 _Jv_JNI_CallStaticMethodA<jchar>, // CallStaticCharMethodA
2510 _Jv_JNI_CallStaticMethod<jshort>, // CallStaticShortMethod
2511 _Jv_JNI_CallStaticMethodV<jshort>, // CallStaticShortMethodV
2512 _Jv_JNI_CallStaticMethodA<jshort>, // CallStaticShortMethodA
2513 _Jv_JNI_CallStaticMethod<jint>, // CallStaticIntMethod
2514 _Jv_JNI_CallStaticMethodV<jint>, // CallStaticIntMethodV
2515 _Jv_JNI_CallStaticMethodA<jint>, // CallStaticIntMethodA
2516 _Jv_JNI_CallStaticMethod<jlong>, // CallStaticLongMethod
2517 _Jv_JNI_CallStaticMethodV<jlong>, // CallStaticLongMethodV
2518 _Jv_JNI_CallStaticMethodA<jlong>, // CallStaticLongMethodA
2519 _Jv_JNI_CallStaticMethod<jfloat>, // CallStaticFloatMethod
2520 _Jv_JNI_CallStaticMethodV<jfloat>, // CallStaticFloatMethodV
2521 _Jv_JNI_CallStaticMethodA<jfloat>, // CallStaticFloatMethodA
2522 _Jv_JNI_CallStaticMethod<jdouble>, // CallStaticDoubleMethod
2523 _Jv_JNI_CallStaticMethodV<jdouble>, // CallStaticDoubleMethodV
2524 _Jv_JNI_CallStaticMethodA<jdouble>, // CallStaticDoubleMethodA
2525 _Jv_JNI_CallStaticVoidMethod, // CallStaticVoidMethod
2526 _Jv_JNI_CallStaticVoidMethodV, // CallStaticVoidMethodV
2527 _Jv_JNI_CallStaticVoidMethodA, // CallStaticVoidMethodA
2529 _Jv_JNI_GetAnyFieldID<true>, // GetStaticFieldID
2530 _Jv_JNI_GetStaticField<jobject>, // GetStaticObjectField
2531 _Jv_JNI_GetStaticField<jboolean>, // GetStaticBooleanField
2532 _Jv_JNI_GetStaticField<jbyte>, // GetStaticByteField
2533 _Jv_JNI_GetStaticField<jchar>, // GetStaticCharField
2534 _Jv_JNI_GetStaticField<jshort>, // GetStaticShortField
2535 _Jv_JNI_GetStaticField<jint>, // GetStaticIntField
2536 _Jv_JNI_GetStaticField<jlong>, // GetStaticLongField
2537 _Jv_JNI_GetStaticField<jfloat>, // GetStaticFloatField
2538 _Jv_JNI_GetStaticField<jdouble>, // GetStaticDoubleField
2539 _Jv_JNI_SetStaticField, // SetStaticObjectField
2540 _Jv_JNI_SetStaticField, // SetStaticBooleanField
2541 _Jv_JNI_SetStaticField, // SetStaticByteField
2542 _Jv_JNI_SetStaticField, // SetStaticCharField
2543 _Jv_JNI_SetStaticField, // SetStaticShortField
2544 _Jv_JNI_SetStaticField, // SetStaticIntField
2545 _Jv_JNI_SetStaticField, // SetStaticLongField
2546 _Jv_JNI_SetStaticField, // SetStaticFloatField
2547 _Jv_JNI_SetStaticField, // SetStaticDoubleField
2548 _Jv_JNI_NewString, // NewString
2549 _Jv_JNI_GetStringLength, // GetStringLength
2550 _Jv_JNI_GetStringChars, // GetStringChars
2551 _Jv_JNI_ReleaseStringChars, // ReleaseStringChars
2552 _Jv_JNI_NewStringUTF, // NewStringUTF
2553 _Jv_JNI_GetStringUTFLength, // GetStringUTFLength
2554 _Jv_JNI_GetStringUTFChars, // GetStringUTFLength
2555 _Jv_JNI_ReleaseStringUTFChars, // ReleaseStringUTFChars
2556 _Jv_JNI_GetArrayLength, // GetArrayLength
2557 _Jv_JNI_NewObjectArray, // NewObjectArray
2558 _Jv_JNI_GetObjectArrayElement, // GetObjectArrayElement
2559 _Jv_JNI_SetObjectArrayElement, // SetObjectArrayElement
2560 _Jv_JNI_NewPrimitiveArray<jboolean, JvPrimClass (boolean)>,
2561 // NewBooleanArray
2562 _Jv_JNI_NewPrimitiveArray<jbyte, JvPrimClass (byte)>, // NewByteArray
2563 _Jv_JNI_NewPrimitiveArray<jchar, JvPrimClass (char)>, // NewCharArray
2564 _Jv_JNI_NewPrimitiveArray<jshort, JvPrimClass (short)>, // NewShortArray
2565 _Jv_JNI_NewPrimitiveArray<jint, JvPrimClass (int)>, // NewIntArray
2566 _Jv_JNI_NewPrimitiveArray<jlong, JvPrimClass (long)>, // NewLongArray
2567 _Jv_JNI_NewPrimitiveArray<jfloat, JvPrimClass (float)>, // NewFloatArray
2568 _Jv_JNI_NewPrimitiveArray<jdouble, JvPrimClass (double)>, // NewDoubleArray
2569 _Jv_JNI_GetPrimitiveArrayElements, // GetBooleanArrayElements
2570 _Jv_JNI_GetPrimitiveArrayElements, // GetByteArrayElements
2571 _Jv_JNI_GetPrimitiveArrayElements, // GetCharArrayElements
2572 _Jv_JNI_GetPrimitiveArrayElements, // GetShortArrayElements
2573 _Jv_JNI_GetPrimitiveArrayElements, // GetIntArrayElements
2574 _Jv_JNI_GetPrimitiveArrayElements, // GetLongArrayElements
2575 _Jv_JNI_GetPrimitiveArrayElements, // GetFloatArrayElements
2576 _Jv_JNI_GetPrimitiveArrayElements, // GetDoubleArrayElements
2577 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseBooleanArrayElements
2578 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseByteArrayElements
2579 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseCharArrayElements
2580 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseShortArrayElements
2581 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseIntArrayElements
2582 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseLongArrayElements
2583 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseFloatArrayElements
2584 _Jv_JNI_ReleasePrimitiveArrayElements, // ReleaseDoubleArrayElements
2585 _Jv_JNI_GetPrimitiveArrayRegion, // GetBooleanArrayRegion
2586 _Jv_JNI_GetPrimitiveArrayRegion, // GetByteArrayRegion
2587 _Jv_JNI_GetPrimitiveArrayRegion, // GetCharArrayRegion
2588 _Jv_JNI_GetPrimitiveArrayRegion, // GetShortArrayRegion
2589 _Jv_JNI_GetPrimitiveArrayRegion, // GetIntArrayRegion
2590 _Jv_JNI_GetPrimitiveArrayRegion, // GetLongArrayRegion
2591 _Jv_JNI_GetPrimitiveArrayRegion, // GetFloatArrayRegion
2592 _Jv_JNI_GetPrimitiveArrayRegion, // GetDoubleArrayRegion
2593 _Jv_JNI_SetPrimitiveArrayRegion, // SetBooleanArrayRegion
2594 _Jv_JNI_SetPrimitiveArrayRegion, // SetByteArrayRegion
2595 _Jv_JNI_SetPrimitiveArrayRegion, // SetCharArrayRegion
2596 _Jv_JNI_SetPrimitiveArrayRegion, // SetShortArrayRegion
2597 _Jv_JNI_SetPrimitiveArrayRegion, // SetIntArrayRegion
2598 _Jv_JNI_SetPrimitiveArrayRegion, // SetLongArrayRegion
2599 _Jv_JNI_SetPrimitiveArrayRegion, // SetFloatArrayRegion
2600 _Jv_JNI_SetPrimitiveArrayRegion, // SetDoubleArrayRegion
2601 _Jv_JNI_RegisterNatives, // RegisterNatives
2602 _Jv_JNI_UnregisterNatives, // UnregisterNatives
2603 _Jv_JNI_MonitorEnter, // MonitorEnter
2604 _Jv_JNI_MonitorExit, // MonitorExit
2605 _Jv_JNI_GetJavaVM, // GetJavaVM
2607 _Jv_JNI_GetStringRegion, // GetStringRegion
2608 _Jv_JNI_GetStringUTFRegion, // GetStringUTFRegion
2609 _Jv_JNI_GetPrimitiveArrayCritical, // GetPrimitiveArrayCritical
2610 _Jv_JNI_ReleasePrimitiveArrayCritical, // ReleasePrimitiveArrayCritical
2611 _Jv_JNI_GetStringCritical, // GetStringCritical
2612 _Jv_JNI_ReleaseStringCritical, // ReleaseStringCritical
2614 _Jv_JNI_NewWeakGlobalRef, // NewWeakGlobalRef
2615 _Jv_JNI_DeleteWeakGlobalRef, // DeleteWeakGlobalRef
2617 _Jv_JNI_ExceptionCheck
2620 struct JNIInvokeInterface _Jv_JNI_InvokeFunctions =
2622 RESERVED,
2623 RESERVED,
2624 RESERVED,
2626 _Jv_JNI_DestroyJavaVM,
2627 _Jv_JNI_AttachCurrentThread,
2628 _Jv_JNI_DetachCurrentThread,
2629 _Jv_JNI_GetEnv