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[official-gcc.git] / libjava / jni.cc
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1 // jni.cc - JNI implementation, including the jump table.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation
6 This file is part of libgcj.
8 This software is copyrighted work licensed under the terms of the
9 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
10 details. */
12 #include <config.h>
14 #include <stdio.h>
15 #include <stddef.h>
16 #include <string.h>
18 #include <gcj/cni.h>
19 #include <jvm.h>
20 #include <java-assert.h>
21 #include <jni.h>
22 #ifdef ENABLE_JVMPI
23 #include <jvmpi.h>
24 #endif
25 #ifdef INTERPRETER
26 #include <jvmti.h>
27 #include "jvmti-int.h"
28 #endif
29 #include <java/lang/Class.h>
30 #include <java/lang/ClassLoader.h>
31 #include <java/lang/Throwable.h>
32 #include <java/lang/ArrayIndexOutOfBoundsException.h>
33 #include <java/lang/StringIndexOutOfBoundsException.h>
34 #include <java/lang/StringBuffer.h>
35 #include <java/lang/UnsatisfiedLinkError.h>
36 #include <java/lang/InstantiationException.h>
37 #include <java/lang/NoSuchFieldError.h>
38 #include <java/lang/NoSuchMethodError.h>
39 #include <java/lang/reflect/Constructor.h>
40 #include <java/lang/reflect/Method.h>
41 #include <java/lang/reflect/Modifier.h>
42 #include <java/lang/OutOfMemoryError.h>
43 #include <java/lang/Integer.h>
44 #include <java/lang/ThreadGroup.h>
45 #include <java/lang/Thread.h>
46 #include <java/lang/IllegalAccessError.h>
47 #include <java/nio/Buffer.h>
48 #include <java/nio/DirectByteBufferImpl.h>
49 #include <java/nio/DirectByteBufferImpl$ReadWrite.h>
50 #include <java/util/IdentityHashMap.h>
51 #include <gnu/gcj/RawData.h>
52 #include <java/lang/ClassNotFoundException.h>
54 #include <gcj/method.h>
55 #include <gcj/field.h>
57 #include <java-interp.h>
58 #include <java-threads.h>
60 using namespace gcj;
62 // This enum is used to select different template instantiations in
63 // the invocation code.
64 enum invocation_type
66 normal,
67 nonvirtual,
68 static_type,
69 constructor
72 // Forward declarations.
73 extern struct JNINativeInterface_ _Jv_JNIFunctions;
74 extern struct JNIInvokeInterface_ _Jv_JNI_InvokeFunctions;
76 // Number of slots in the default frame. The VM must allow at least
77 // 16.
78 #define FRAME_SIZE 16
80 // Mark value indicating this is an overflow frame.
81 #define MARK_NONE 0
82 // Mark value indicating this is a user frame.
83 #define MARK_USER 1
84 // Mark value indicating this is a system frame.
85 #define MARK_SYSTEM 2
87 // This structure is used to keep track of local references.
88 struct _Jv_JNI_LocalFrame
90 // This is one of the MARK_ constants.
91 unsigned char marker;
93 // Flag to indicate some locals were allocated.
94 bool allocated_p;
96 // Number of elements in frame.
97 int size;
99 // The class loader of the JNI method that allocated this frame.
100 ::java::lang::ClassLoader *loader;
102 // Next frame in chain.
103 _Jv_JNI_LocalFrame *next;
105 // The elements. These are allocated using the C "struct hack".
106 jobject vec[0];
109 // This holds a reference count for all local references.
110 static java::util::IdentityHashMap *local_ref_table;
111 // This holds a reference count for all global references.
112 static java::util::IdentityHashMap *global_ref_table;
114 // The only VM.
115 JavaVM *_Jv_the_vm;
117 #ifdef ENABLE_JVMPI
118 // The only JVMPI interface description.
119 static JVMPI_Interface _Jv_JVMPI_Interface;
121 static jint
122 jvmpiEnableEvent (jint event_type, void *)
124 switch (event_type)
126 case JVMPI_EVENT_OBJECT_ALLOC:
127 _Jv_JVMPI_Notify_OBJECT_ALLOC = _Jv_JVMPI_Interface.NotifyEvent;
128 break;
130 case JVMPI_EVENT_THREAD_START:
131 _Jv_JVMPI_Notify_THREAD_START = _Jv_JVMPI_Interface.NotifyEvent;
132 break;
134 case JVMPI_EVENT_THREAD_END:
135 _Jv_JVMPI_Notify_THREAD_END = _Jv_JVMPI_Interface.NotifyEvent;
136 break;
138 default:
139 return JVMPI_NOT_AVAILABLE;
142 return JVMPI_SUCCESS;
145 static jint
146 jvmpiDisableEvent (jint event_type, void *)
148 switch (event_type)
150 case JVMPI_EVENT_OBJECT_ALLOC:
151 _Jv_JVMPI_Notify_OBJECT_ALLOC = NULL;
152 break;
154 default:
155 return JVMPI_NOT_AVAILABLE;
158 return JVMPI_SUCCESS;
160 #endif
164 void
165 _Jv_JNI_Init (void)
167 local_ref_table = new java::util::IdentityHashMap;
168 global_ref_table = new java::util::IdentityHashMap;
170 #ifdef ENABLE_JVMPI
171 _Jv_JVMPI_Interface.version = 1;
172 _Jv_JVMPI_Interface.EnableEvent = &jvmpiEnableEvent;
173 _Jv_JVMPI_Interface.DisableEvent = &jvmpiDisableEvent;
174 _Jv_JVMPI_Interface.EnableGC = &_Jv_EnableGC;
175 _Jv_JVMPI_Interface.DisableGC = &_Jv_DisableGC;
176 _Jv_JVMPI_Interface.RunGC = &_Jv_RunGC;
177 #endif
180 // Tell the GC that a certain pointer is live.
181 static void
182 mark_for_gc (jobject obj, java::util::IdentityHashMap *ref_table)
184 JvSynchronize sync (ref_table);
186 using namespace java::lang;
187 Integer *refcount = (Integer *) ref_table->get (obj);
188 jint val = (refcount == NULL) ? 0 : refcount->intValue ();
189 // FIXME: what about out of memory error?
190 ref_table->put (obj, new Integer (val + 1));
193 // Unmark a pointer.
194 static void
195 unmark_for_gc (jobject obj, java::util::IdentityHashMap *ref_table)
197 JvSynchronize sync (ref_table);
199 using namespace java::lang;
200 Integer *refcount = (Integer *) ref_table->get (obj);
201 JvAssert (refcount);
202 jint val = refcount->intValue () - 1;
203 JvAssert (val >= 0);
204 if (val == 0)
205 ref_table->remove (obj);
206 else
207 // FIXME: what about out of memory error?
208 ref_table->put (obj, new Integer (val));
211 // "Unwrap" some random non-reference type. This exists to simplify
212 // other template functions.
213 template<typename T>
214 static T
215 unwrap (T val)
217 return val;
220 // Unwrap a weak reference, if required.
221 template<typename T>
222 static T *
223 unwrap (T *obj)
225 using namespace gnu::gcj::runtime;
226 // We can compare the class directly because JNIWeakRef is `final'.
227 // Doing it this way is much faster.
228 if (obj == NULL || obj->getClass () != &JNIWeakRef::class$)
229 return obj;
230 JNIWeakRef *wr = reinterpret_cast<JNIWeakRef *> (obj);
231 return reinterpret_cast<T *> (wr->get ());
234 jobject
235 _Jv_UnwrapJNIweakReference (jobject obj)
237 return unwrap (obj);
242 static jobject JNICALL
243 _Jv_JNI_NewGlobalRef (JNIEnv *, jobject obj)
245 // This seems weird but I think it is correct.
246 obj = unwrap (obj);
247 mark_for_gc (obj, global_ref_table);
248 return obj;
251 static void JNICALL
252 _Jv_JNI_DeleteGlobalRef (JNIEnv *, jobject obj)
254 // This seems weird but I think it is correct.
255 obj = unwrap (obj);
257 // NULL is ok here -- the JNI specification doesn't say so, but this
258 // is a no-op.
259 if (! obj)
260 return;
262 unmark_for_gc (obj, global_ref_table);
265 static void JNICALL
266 _Jv_JNI_DeleteLocalRef (JNIEnv *env, jobject obj)
268 _Jv_JNI_LocalFrame *frame;
270 // This seems weird but I think it is correct.
271 obj = unwrap (obj);
273 // NULL is ok here -- the JNI specification doesn't say so, but this
274 // is a no-op.
275 if (! obj)
276 return;
278 for (frame = env->locals; frame != NULL; frame = frame->next)
280 for (int i = 0; i < frame->size; ++i)
282 if (frame->vec[i] == obj)
284 frame->vec[i] = NULL;
285 unmark_for_gc (obj, local_ref_table);
286 return;
290 // Don't go past a marked frame.
291 JvAssert (frame->marker == MARK_NONE);
294 JvAssert (0);
297 static jint JNICALL
298 _Jv_JNI_EnsureLocalCapacity (JNIEnv *env, jint size)
300 // It is easier to just always allocate a new frame of the requested
301 // size. This isn't the most efficient thing, but for now we don't
302 // care. Note that _Jv_JNI_PushLocalFrame relies on this right now.
304 _Jv_JNI_LocalFrame *frame;
307 frame = (_Jv_JNI_LocalFrame *) _Jv_Malloc (sizeof (_Jv_JNI_LocalFrame)
308 + size * sizeof (jobject));
310 catch (jthrowable t)
312 env->ex = t;
313 return JNI_ERR;
316 frame->marker = MARK_NONE;
317 frame->size = size;
318 frame->allocated_p = false;
319 memset (&frame->vec[0], 0, size * sizeof (jobject));
320 frame->loader = env->locals->loader;
321 frame->next = env->locals;
322 env->locals = frame;
324 return 0;
327 static jint JNICALL
328 _Jv_JNI_PushLocalFrame (JNIEnv *env, jint size)
330 jint r = _Jv_JNI_EnsureLocalCapacity (env, size);
331 if (r < 0)
332 return r;
334 // The new frame is on top.
335 env->locals->marker = MARK_USER;
337 return 0;
340 static jobject JNICALL
341 _Jv_JNI_NewLocalRef (JNIEnv *env, jobject obj)
343 // This seems weird but I think it is correct.
344 obj = unwrap (obj);
346 // Try to find an open slot somewhere in the topmost frame.
347 _Jv_JNI_LocalFrame *frame = env->locals;
348 bool done = false, set = false;
349 for (; frame != NULL && ! done; frame = frame->next)
351 for (int i = 0; i < frame->size; ++i)
353 if (frame->vec[i] == NULL)
355 set = true;
356 done = true;
357 frame->vec[i] = obj;
358 frame->allocated_p = true;
359 break;
363 // If we found a slot, or if the frame we just searched is the
364 // mark frame, then we are done.
365 if (done || frame == NULL || frame->marker != MARK_NONE)
366 break;
369 if (! set)
371 // No slots, so we allocate a new frame. According to the spec
372 // we could just die here. FIXME: return value.
373 _Jv_JNI_EnsureLocalCapacity (env, 16);
374 // We know the first element of the new frame will be ok.
375 env->locals->vec[0] = obj;
376 env->locals->allocated_p = true;
379 mark_for_gc (obj, local_ref_table);
380 return obj;
383 static jobject JNICALL
384 _Jv_JNI_PopLocalFrame (JNIEnv *env, jobject result, int stop)
386 _Jv_JNI_LocalFrame *rf = env->locals;
388 bool done = false;
389 while (rf != NULL && ! done)
391 for (int i = 0; i < rf->size; ++i)
392 if (rf->vec[i] != NULL)
393 unmark_for_gc (rf->vec[i], local_ref_table);
395 // If the frame we just freed is the marker frame, we are done.
396 done = (rf->marker == stop);
398 _Jv_JNI_LocalFrame *n = rf->next;
399 // When N==NULL, we've reached the reusable bottom_locals, and we must
400 // not free it. However, we must be sure to clear all its elements.
401 if (n == NULL)
403 if (rf->allocated_p)
404 memset (&rf->vec[0], 0, rf->size * sizeof (jobject));
405 rf->allocated_p = false;
406 rf = NULL;
407 break;
410 _Jv_Free (rf);
411 rf = n;
414 // Update the local frame information.
415 env->locals = rf;
417 return result == NULL ? NULL : _Jv_JNI_NewLocalRef (env, result);
420 static jobject JNICALL
421 _Jv_JNI_PopLocalFrame (JNIEnv *env, jobject result)
423 return _Jv_JNI_PopLocalFrame (env, result, MARK_USER);
426 // Make sure an array's type is compatible with the type of the
427 // destination.
428 template<typename T>
429 static bool
430 _Jv_JNI_check_types (JNIEnv *env, JArray<T> *array, jclass K)
432 jclass klass = array->getClass()->getComponentType();
433 if (__builtin_expect (klass != K, false))
435 env->ex = new java::lang::IllegalAccessError ();
436 return false;
438 else
439 return true;
442 // Pop a `system' frame from the stack. This is `extern "C"' as it is
443 // used by the compiler.
444 extern "C" void
445 _Jv_JNI_PopSystemFrame (JNIEnv *env)
447 // Only enter slow path when we're not at the bottom, or there have been
448 // allocations. Usually this is false and we can just null out the locals
449 // field.
451 if (__builtin_expect ((env->locals->next
452 || env->locals->allocated_p), false))
453 _Jv_JNI_PopLocalFrame (env, NULL, MARK_SYSTEM);
454 else
455 env->locals = NULL;
457 #ifdef INTERPRETER
458 if (__builtin_expect (env->ex != NULL, false))
460 jthrowable t = env->ex;
461 env->ex = NULL;
462 if (JVMTI_REQUESTED_EVENT (Exception))
463 _Jv_ReportJVMTIExceptionThrow (t);
464 throw t;
466 #endif
469 template<typename T> T extract_from_jvalue(jvalue const & t);
470 template<> jboolean extract_from_jvalue(jvalue const & jv) { return jv.z; }
471 template<> jbyte extract_from_jvalue(jvalue const & jv) { return jv.b; }
472 template<> jchar extract_from_jvalue(jvalue const & jv) { return jv.c; }
473 template<> jshort extract_from_jvalue(jvalue const & jv) { return jv.s; }
474 template<> jint extract_from_jvalue(jvalue const & jv) { return jv.i; }
475 template<> jlong extract_from_jvalue(jvalue const & jv) { return jv.j; }
476 template<> jfloat extract_from_jvalue(jvalue const & jv) { return jv.f; }
477 template<> jdouble extract_from_jvalue(jvalue const & jv) { return jv.d; }
478 template<> jobject extract_from_jvalue(jvalue const & jv) { return jv.l; }
481 // This function is used from other template functions. It wraps the
482 // return value appropriately; we specialize it so that object returns
483 // are turned into local references.
484 template<typename T>
485 static T
486 wrap_value (JNIEnv *, T value)
488 return value;
491 // This specialization is used for jobject, jclass, jstring, jarray,
492 // etc.
493 template<typename R, typename T>
494 static T *
495 wrap_value (JNIEnv *env, T *value)
497 return (value == NULL
498 ? value
499 : (T *) _Jv_JNI_NewLocalRef (env, (jobject) value));
504 static jint JNICALL
505 _Jv_JNI_GetVersion (JNIEnv *)
507 return JNI_VERSION_1_4;
510 static jclass JNICALL
511 _Jv_JNI_DefineClass (JNIEnv *env, const char *name, jobject loader,
512 const jbyte *buf, jsize bufLen)
516 loader = unwrap (loader);
518 jstring sname = JvNewStringUTF (name);
519 jbyteArray bytes = JvNewByteArray (bufLen);
521 jbyte *elts = elements (bytes);
522 memcpy (elts, buf, bufLen * sizeof (jbyte));
524 java::lang::ClassLoader *l
525 = reinterpret_cast<java::lang::ClassLoader *> (loader);
527 jclass result = l->defineClass (sname, bytes, 0, bufLen);
528 return (jclass) wrap_value (env, result);
530 catch (jthrowable t)
532 env->ex = t;
533 return NULL;
537 static jclass JNICALL
538 _Jv_JNI_FindClass (JNIEnv *env, const char *name)
540 // FIXME: assume that NAME isn't too long.
541 int len = strlen (name);
542 char s[len + 1];
543 for (int i = 0; i <= len; ++i)
544 s[i] = (name[i] == '/') ? '.' : name[i];
546 jclass r = NULL;
549 // This might throw an out of memory exception.
550 jstring n = JvNewStringUTF (s);
552 java::lang::ClassLoader *loader = NULL;
553 if (env->locals->loader != NULL)
554 loader = env->locals->loader;
556 if (loader == NULL)
558 // FIXME: should use getBaseClassLoader, but we don't have that
559 // yet.
560 loader = java::lang::ClassLoader::getSystemClassLoader ();
563 r = loader->loadClass (n);
564 _Jv_InitClass (r);
566 catch (jthrowable t)
568 env->ex = t;
571 return (jclass) wrap_value (env, r);
574 static jclass JNICALL
575 _Jv_JNI_GetSuperclass (JNIEnv *env, jclass clazz)
577 return (jclass) wrap_value (env, unwrap (clazz)->getSuperclass ());
580 static jboolean JNICALL
581 _Jv_JNI_IsAssignableFrom (JNIEnv *, jclass clazz1, jclass clazz2)
583 return unwrap (clazz2)->isAssignableFrom (unwrap (clazz1));
586 static jint JNICALL
587 _Jv_JNI_Throw (JNIEnv *env, jthrowable obj)
589 // We check in case the user did some funky cast.
590 obj = unwrap (obj);
591 JvAssert (obj != NULL && java::lang::Throwable::class$.isInstance (obj));
592 env->ex = obj;
593 return 0;
596 static jint JNICALL
597 _Jv_JNI_ThrowNew (JNIEnv *env, jclass clazz, const char *message)
599 using namespace java::lang::reflect;
601 clazz = unwrap (clazz);
602 JvAssert (java::lang::Throwable::class$.isAssignableFrom (clazz));
604 int r = JNI_OK;
607 JArray<jclass> *argtypes
608 = (JArray<jclass> *) JvNewObjectArray (1, &java::lang::Class::class$,
609 NULL);
611 jclass *elts = elements (argtypes);
612 elts[0] = &java::lang::String::class$;
614 Constructor *cons = clazz->getConstructor (argtypes);
616 jobjectArray values = JvNewObjectArray (1, &java::lang::String::class$,
617 NULL);
618 jobject *velts = elements (values);
619 velts[0] = JvNewStringUTF (message);
621 jobject obj = cons->newInstance (values);
623 env->ex = reinterpret_cast<jthrowable> (obj);
625 catch (jthrowable t)
627 env->ex = t;
628 r = JNI_ERR;
631 return r;
634 static jthrowable JNICALL
635 _Jv_JNI_ExceptionOccurred (JNIEnv *env)
637 return (jthrowable) wrap_value (env, env->ex);
640 static void JNICALL
641 _Jv_JNI_ExceptionDescribe (JNIEnv *env)
643 if (env->ex != NULL)
644 env->ex->printStackTrace();
647 static void JNICALL
648 _Jv_JNI_ExceptionClear (JNIEnv *env)
650 env->ex = NULL;
653 static jboolean JNICALL
654 _Jv_JNI_ExceptionCheck (JNIEnv *env)
656 return env->ex != NULL;
659 static void JNICALL
660 _Jv_JNI_FatalError (JNIEnv *, const char *message)
662 JvFail (message);
667 static jboolean JNICALL
668 _Jv_JNI_IsSameObject (JNIEnv *, jobject obj1, jobject obj2)
670 return unwrap (obj1) == unwrap (obj2);
673 static jobject JNICALL
674 _Jv_JNI_AllocObject (JNIEnv *env, jclass clazz)
676 jobject obj = NULL;
677 using namespace java::lang::reflect;
681 clazz = unwrap (clazz);
682 JvAssert (clazz && ! clazz->isArray ());
683 if (clazz->isInterface() || Modifier::isAbstract(clazz->getModifiers()))
684 env->ex = new java::lang::InstantiationException ();
685 else
686 obj = _Jv_AllocObject (clazz);
688 catch (jthrowable t)
690 env->ex = t;
693 return wrap_value (env, obj);
696 static jclass JNICALL
697 _Jv_JNI_GetObjectClass (JNIEnv *env, jobject obj)
699 obj = unwrap (obj);
700 JvAssert (obj);
701 return (jclass) wrap_value (env, obj->getClass());
704 static jboolean JNICALL
705 _Jv_JNI_IsInstanceOf (JNIEnv *, jobject obj, jclass clazz)
707 return unwrap (clazz)->isInstance(unwrap (obj));
713 // This section concerns method invocation.
716 template<jboolean is_static>
717 static jmethodID JNICALL
718 _Jv_JNI_GetAnyMethodID (JNIEnv *env, jclass clazz,
719 const char *name, const char *sig)
723 clazz = unwrap (clazz);
724 _Jv_InitClass (clazz);
726 _Jv_Utf8Const *name_u = _Jv_makeUtf8Const ((char *) name, -1);
728 // FIXME: assume that SIG isn't too long.
729 int len = strlen (sig);
730 char s[len + 1];
731 for (int i = 0; i <= len; ++i)
732 s[i] = (sig[i] == '/') ? '.' : sig[i];
733 _Jv_Utf8Const *sig_u = _Jv_makeUtf8Const ((char *) s, -1);
735 JvAssert (! clazz->isPrimitive());
737 using namespace java::lang::reflect;
739 while (clazz != NULL)
741 jint count = JvNumMethods (clazz);
742 jmethodID meth = JvGetFirstMethod (clazz);
744 for (jint i = 0; i < count; ++i)
746 if (((is_static && Modifier::isStatic (meth->accflags))
747 || (! is_static && ! Modifier::isStatic (meth->accflags)))
748 && _Jv_equalUtf8Consts (meth->name, name_u)
749 && _Jv_equalUtf8Consts (meth->signature, sig_u))
750 return meth;
752 meth = meth->getNextMethod();
755 clazz = clazz->getSuperclass ();
758 java::lang::StringBuffer *name_sig =
759 new java::lang::StringBuffer (JvNewStringUTF (name));
760 name_sig->append ((jchar) ' ');
761 name_sig->append (JvNewStringUTF (s));
762 env->ex = new java::lang::NoSuchMethodError (name_sig->toString ());
764 catch (jthrowable t)
766 env->ex = t;
769 return NULL;
772 // This is a helper function which turns a va_list into an array of
773 // `jvalue's. It needs signature information in order to do its work.
774 // The array of values must already be allocated.
775 static void
776 array_from_valist (jvalue *values, JArray<jclass> *arg_types, va_list vargs)
778 jclass *arg_elts = elements (arg_types);
779 for (int i = 0; i < arg_types->length; ++i)
781 // Here we assume that sizeof(int) >= sizeof(jint), because we
782 // use `int' when decoding the varargs. Likewise for
783 // float, and double. Also we assume that sizeof(jlong) >=
784 // sizeof(int), i.e. that jlong values are not further
785 // promoted.
786 JvAssert (sizeof (int) >= sizeof (jint));
787 JvAssert (sizeof (jlong) >= sizeof (int));
788 JvAssert (sizeof (double) >= sizeof (jfloat));
789 JvAssert (sizeof (double) >= sizeof (jdouble));
790 if (arg_elts[i] == JvPrimClass (byte))
791 values[i].b = (jbyte) va_arg (vargs, int);
792 else if (arg_elts[i] == JvPrimClass (short))
793 values[i].s = (jshort) va_arg (vargs, int);
794 else if (arg_elts[i] == JvPrimClass (int))
795 values[i].i = (jint) va_arg (vargs, int);
796 else if (arg_elts[i] == JvPrimClass (long))
797 values[i].j = (jlong) va_arg (vargs, jlong);
798 else if (arg_elts[i] == JvPrimClass (float))
799 values[i].f = (jfloat) va_arg (vargs, double);
800 else if (arg_elts[i] == JvPrimClass (double))
801 values[i].d = (jdouble) va_arg (vargs, double);
802 else if (arg_elts[i] == JvPrimClass (boolean))
803 values[i].z = (jboolean) va_arg (vargs, int);
804 else if (arg_elts[i] == JvPrimClass (char))
805 values[i].c = (jchar) va_arg (vargs, int);
806 else
808 // An object.
809 values[i].l = unwrap (va_arg (vargs, jobject));
814 // This can call any sort of method: virtual, "nonvirtual", static, or
815 // constructor.
816 template<typename T, invocation_type style>
817 static T JNICALL
818 _Jv_JNI_CallAnyMethodV (JNIEnv *env, jobject obj, jclass klass,
819 jmethodID id, va_list vargs)
821 obj = unwrap (obj);
822 klass = unwrap (klass);
824 jclass decl_class = klass ? klass : obj->getClass ();
825 JvAssert (decl_class != NULL);
827 jclass return_type;
828 JArray<jclass> *arg_types;
832 _Jv_GetTypesFromSignature (id, decl_class,
833 &arg_types, &return_type);
835 jvalue args[arg_types->length];
836 array_from_valist (args, arg_types, vargs);
838 // For constructors we need to pass the Class we are instantiating.
839 if (style == constructor)
840 return_type = klass;
842 jvalue result;
843 _Jv_CallAnyMethodA (obj, return_type, id,
844 style == constructor,
845 style == normal,
846 arg_types, args, &result);
848 return wrap_value (env, extract_from_jvalue<T>(result));
850 catch (jthrowable t)
852 env->ex = t;
855 return wrap_value (env, (T) 0);
858 template<typename T, invocation_type style>
859 static T JNICALL
860 _Jv_JNI_CallAnyMethod (JNIEnv *env, jobject obj, jclass klass,
861 jmethodID method, ...)
863 va_list args;
864 T result;
866 va_start (args, method);
867 result = _Jv_JNI_CallAnyMethodV<T, style> (env, obj, klass, method, args);
868 va_end (args);
870 return result;
873 template<typename T, invocation_type style>
874 static T JNICALL
875 _Jv_JNI_CallAnyMethodA (JNIEnv *env, jobject obj, jclass klass,
876 jmethodID id, const jvalue *args)
878 obj = unwrap (obj);
879 klass = unwrap (klass);
881 jclass decl_class = klass ? klass : obj->getClass ();
882 JvAssert (decl_class != NULL);
884 jclass return_type;
885 JArray<jclass> *arg_types;
888 _Jv_GetTypesFromSignature (id, decl_class,
889 &arg_types, &return_type);
891 // For constructors we need to pass the Class we are instantiating.
892 if (style == constructor)
893 return_type = klass;
895 // Unwrap arguments as required. Eww.
896 jclass *type_elts = elements (arg_types);
897 jvalue arg_copy[arg_types->length];
898 for (int i = 0; i < arg_types->length; ++i)
900 if (type_elts[i]->isPrimitive ())
901 arg_copy[i] = args[i];
902 else
903 arg_copy[i].l = unwrap (args[i].l);
906 jvalue result;
907 _Jv_CallAnyMethodA (obj, return_type, id,
908 style == constructor,
909 style == normal,
910 arg_types, arg_copy, &result);
912 return wrap_value (env, extract_from_jvalue<T>(result));
914 catch (jthrowable t)
916 env->ex = t;
919 return wrap_value (env, (T) 0);
922 template<invocation_type style>
923 static void JNICALL
924 _Jv_JNI_CallAnyVoidMethodV (JNIEnv *env, jobject obj, jclass klass,
925 jmethodID id, va_list vargs)
927 obj = unwrap (obj);
928 klass = unwrap (klass);
930 jclass decl_class = klass ? klass : obj->getClass ();
931 JvAssert (decl_class != NULL);
933 jclass return_type;
934 JArray<jclass> *arg_types;
937 _Jv_GetTypesFromSignature (id, decl_class,
938 &arg_types, &return_type);
940 jvalue args[arg_types->length];
941 array_from_valist (args, arg_types, vargs);
943 // For constructors we need to pass the Class we are instantiating.
944 if (style == constructor)
945 return_type = klass;
947 _Jv_CallAnyMethodA (obj, return_type, id,
948 style == constructor,
949 style == normal,
950 arg_types, args, NULL);
952 catch (jthrowable t)
954 env->ex = t;
958 template<invocation_type style>
959 static void JNICALL
960 _Jv_JNI_CallAnyVoidMethod (JNIEnv *env, jobject obj, jclass klass,
961 jmethodID method, ...)
963 va_list args;
965 va_start (args, method);
966 _Jv_JNI_CallAnyVoidMethodV<style> (env, obj, klass, method, args);
967 va_end (args);
970 template<invocation_type style>
971 static void JNICALL
972 _Jv_JNI_CallAnyVoidMethodA (JNIEnv *env, jobject obj, jclass klass,
973 jmethodID id, const jvalue *args)
975 jclass decl_class = klass ? klass : obj->getClass ();
976 JvAssert (decl_class != NULL);
978 jclass return_type;
979 JArray<jclass> *arg_types;
982 _Jv_GetTypesFromSignature (id, decl_class,
983 &arg_types, &return_type);
985 // Unwrap arguments as required. Eww.
986 jclass *type_elts = elements (arg_types);
987 jvalue arg_copy[arg_types->length];
988 for (int i = 0; i < arg_types->length; ++i)
990 if (type_elts[i]->isPrimitive ())
991 arg_copy[i] = args[i];
992 else
993 arg_copy[i].l = unwrap (args[i].l);
996 _Jv_CallAnyMethodA (obj, return_type, id,
997 style == constructor,
998 style == normal,
999 arg_types, args, NULL);
1001 catch (jthrowable t)
1003 env->ex = t;
1007 // Functions with this signature are used to implement functions in
1008 // the CallMethod family.
1009 template<typename T>
1010 static T JNICALL
1011 _Jv_JNI_CallMethodV (JNIEnv *env, jobject obj,
1012 jmethodID id, va_list args)
1014 return _Jv_JNI_CallAnyMethodV<T, normal> (env, obj, NULL, id, args);
1017 // Functions with this signature are used to implement functions in
1018 // the CallMethod family.
1019 template<typename T>
1020 static T JNICALL
1021 _Jv_JNI_CallMethod (JNIEnv *env, jobject obj, jmethodID id, ...)
1023 va_list args;
1024 T result;
1026 va_start (args, id);
1027 result = _Jv_JNI_CallAnyMethodV<T, normal> (env, obj, NULL, id, args);
1028 va_end (args);
1030 return result;
1033 // Functions with this signature are used to implement functions in
1034 // the CallMethod family.
1035 template<typename T>
1036 static T JNICALL
1037 _Jv_JNI_CallMethodA (JNIEnv *env, jobject obj,
1038 jmethodID id, const jvalue *args)
1040 return _Jv_JNI_CallAnyMethodA<T, normal> (env, obj, NULL, id, args);
1043 static void JNICALL
1044 _Jv_JNI_CallVoidMethodV (JNIEnv *env, jobject obj,
1045 jmethodID id, va_list args)
1047 _Jv_JNI_CallAnyVoidMethodV<normal> (env, obj, NULL, id, args);
1050 static void JNICALL
1051 _Jv_JNI_CallVoidMethod (JNIEnv *env, jobject obj, jmethodID id, ...)
1053 va_list args;
1055 va_start (args, id);
1056 _Jv_JNI_CallAnyVoidMethodV<normal> (env, obj, NULL, id, args);
1057 va_end (args);
1060 static void JNICALL
1061 _Jv_JNI_CallVoidMethodA (JNIEnv *env, jobject obj,
1062 jmethodID id, const jvalue *args)
1064 _Jv_JNI_CallAnyVoidMethodA<normal> (env, obj, NULL, id, args);
1067 // Functions with this signature are used to implement functions in
1068 // the CallStaticMethod family.
1069 template<typename T>
1070 static T JNICALL
1071 _Jv_JNI_CallStaticMethodV (JNIEnv *env, jclass klass,
1072 jmethodID id, va_list args)
1074 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1075 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1077 return _Jv_JNI_CallAnyMethodV<T, static_type> (env, NULL, klass, id, args);
1080 // Functions with this signature are used to implement functions in
1081 // the CallStaticMethod family.
1082 template<typename T>
1083 static T JNICALL
1084 _Jv_JNI_CallStaticMethod (JNIEnv *env, jclass klass,
1085 jmethodID id, ...)
1087 va_list args;
1088 T result;
1090 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1091 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1093 va_start (args, id);
1094 result = _Jv_JNI_CallAnyMethodV<T, static_type> (env, NULL, klass,
1095 id, args);
1096 va_end (args);
1098 return result;
1101 // Functions with this signature are used to implement functions in
1102 // the CallStaticMethod family.
1103 template<typename T>
1104 static T JNICALL
1105 _Jv_JNI_CallStaticMethodA (JNIEnv *env, jclass klass, jmethodID id,
1106 const jvalue *args)
1108 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1109 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1111 return _Jv_JNI_CallAnyMethodA<T, static_type> (env, NULL, klass, id, args);
1114 static void JNICALL
1115 _Jv_JNI_CallStaticVoidMethodV (JNIEnv *env, jclass klass,
1116 jmethodID id, va_list args)
1118 _Jv_JNI_CallAnyVoidMethodV<static_type> (env, NULL, klass, id, args);
1121 static void JNICALL
1122 _Jv_JNI_CallStaticVoidMethod (JNIEnv *env, jclass klass,
1123 jmethodID id, ...)
1125 va_list args;
1127 va_start (args, id);
1128 _Jv_JNI_CallAnyVoidMethodV<static_type> (env, NULL, klass, id, args);
1129 va_end (args);
1132 static void JNICALL
1133 _Jv_JNI_CallStaticVoidMethodA (JNIEnv *env, jclass klass,
1134 jmethodID id, const jvalue *args)
1136 _Jv_JNI_CallAnyVoidMethodA<static_type> (env, NULL, klass, id, args);
1139 static jobject JNICALL
1140 _Jv_JNI_NewObjectV (JNIEnv *env, jclass klass,
1141 jmethodID id, va_list args)
1143 JvAssert (klass && ! klass->isArray ());
1144 JvAssert (! strcmp (id->name->chars(), "<init>")
1145 && id->signature->len() > 2
1146 && id->signature->chars()[0] == '('
1147 && ! strcmp (&id->signature->chars()[id->signature->len() - 2],
1148 ")V"));
1150 return _Jv_JNI_CallAnyMethodV<jobject, constructor> (env, NULL, klass,
1151 id, args);
1154 static jobject JNICALL
1155 _Jv_JNI_NewObject (JNIEnv *env, jclass klass, jmethodID id, ...)
1157 JvAssert (klass && ! klass->isArray ());
1158 JvAssert (! strcmp (id->name->chars(), "<init>")
1159 && id->signature->len() > 2
1160 && id->signature->chars()[0] == '('
1161 && ! strcmp (&id->signature->chars()[id->signature->len() - 2],
1162 ")V"));
1164 va_list args;
1165 jobject result;
1167 va_start (args, id);
1168 result = _Jv_JNI_CallAnyMethodV<jobject, constructor> (env, NULL, klass,
1169 id, args);
1170 va_end (args);
1172 return result;
1175 static jobject JNICALL
1176 _Jv_JNI_NewObjectA (JNIEnv *env, jclass klass, jmethodID id,
1177 const jvalue *args)
1179 JvAssert (klass && ! klass->isArray ());
1180 JvAssert (! strcmp (id->name->chars(), "<init>")
1181 && id->signature->len() > 2
1182 && id->signature->chars()[0] == '('
1183 && ! strcmp (&id->signature->chars()[id->signature->len() - 2],
1184 ")V"));
1186 return _Jv_JNI_CallAnyMethodA<jobject, constructor> (env, NULL, klass,
1187 id, args);
1192 template<typename T>
1193 static T JNICALL
1194 _Jv_JNI_GetField (JNIEnv *env, jobject obj, jfieldID field)
1196 obj = unwrap (obj);
1197 JvAssert (obj);
1198 T *ptr = (T *) ((char *) obj + field->getOffset ());
1199 return wrap_value (env, *ptr);
1202 template<typename T>
1203 static void JNICALL
1204 _Jv_JNI_SetField (JNIEnv *, jobject obj, jfieldID field, T value)
1206 obj = unwrap (obj);
1207 value = unwrap (value);
1209 JvAssert (obj);
1210 T *ptr = (T *) ((char *) obj + field->getOffset ());
1211 *ptr = value;
1214 template<jboolean is_static>
1215 static jfieldID JNICALL
1216 _Jv_JNI_GetAnyFieldID (JNIEnv *env, jclass clazz,
1217 const char *name, const char *sig)
1221 clazz = unwrap (clazz);
1223 _Jv_InitClass (clazz);
1225 _Jv_Utf8Const *a_name = _Jv_makeUtf8Const ((char *) name, -1);
1227 // FIXME: assume that SIG isn't too long.
1228 int len = strlen (sig);
1229 char s[len + 1];
1230 for (int i = 0; i <= len; ++i)
1231 s[i] = (sig[i] == '/') ? '.' : sig[i];
1232 java::lang::ClassLoader *loader = clazz->getClassLoaderInternal ();
1233 jclass field_class = _Jv_FindClassFromSignature ((char *) s, loader);
1234 if (! field_class)
1235 throw new java::lang::ClassNotFoundException(JvNewStringUTF(s));
1237 while (clazz != NULL)
1239 // We acquire the class lock so that fields aren't resolved
1240 // while we are running.
1241 JvSynchronize sync (clazz);
1243 jint count = (is_static
1244 ? JvNumStaticFields (clazz)
1245 : JvNumInstanceFields (clazz));
1246 jfieldID field = (is_static
1247 ? JvGetFirstStaticField (clazz)
1248 : JvGetFirstInstanceField (clazz));
1249 for (jint i = 0; i < count; ++i)
1251 _Jv_Utf8Const *f_name = field->getNameUtf8Const(clazz);
1253 // The field might be resolved or it might not be. It
1254 // is much simpler to always resolve it.
1255 _Jv_Linker::resolve_field (field, loader);
1256 if (_Jv_equalUtf8Consts (f_name, a_name)
1257 && field->getClass() == field_class)
1258 return field;
1260 field = field->getNextField ();
1263 clazz = clazz->getSuperclass ();
1266 env->ex = new java::lang::NoSuchFieldError ();
1268 catch (jthrowable t)
1270 env->ex = t;
1272 return NULL;
1275 template<typename T>
1276 static T JNICALL
1277 _Jv_JNI_GetStaticField (JNIEnv *env, jclass, jfieldID field)
1279 T *ptr = (T *) field->u.addr;
1280 return wrap_value (env, *ptr);
1283 template<typename T>
1284 static void JNICALL
1285 _Jv_JNI_SetStaticField (JNIEnv *, jclass, jfieldID field, T value)
1287 value = unwrap (value);
1288 T *ptr = (T *) field->u.addr;
1289 *ptr = value;
1292 static jstring JNICALL
1293 _Jv_JNI_NewString (JNIEnv *env, const jchar *unichars, jsize len)
1297 jstring r = _Jv_NewString (unichars, len);
1298 return (jstring) wrap_value (env, r);
1300 catch (jthrowable t)
1302 env->ex = t;
1303 return NULL;
1307 static jsize JNICALL
1308 _Jv_JNI_GetStringLength (JNIEnv *, jstring string)
1310 return unwrap (string)->length();
1313 static const jchar * JNICALL
1314 _Jv_JNI_GetStringChars (JNIEnv *, jstring string, jboolean *isCopy)
1316 string = unwrap (string);
1317 jchar *result = _Jv_GetStringChars (string);
1318 mark_for_gc (string, global_ref_table);
1319 if (isCopy)
1320 *isCopy = false;
1321 return (const jchar *) result;
1324 static void JNICALL
1325 _Jv_JNI_ReleaseStringChars (JNIEnv *, jstring string, const jchar *)
1327 unmark_for_gc (unwrap (string), global_ref_table);
1330 static jstring JNICALL
1331 _Jv_JNI_NewStringUTF (JNIEnv *env, const char *bytes)
1335 // For compatibility with the JDK.
1336 if (!bytes)
1337 return NULL;
1338 jstring result = JvNewStringUTF (bytes);
1339 return (jstring) wrap_value (env, result);
1341 catch (jthrowable t)
1343 env->ex = t;
1344 return NULL;
1348 static jsize JNICALL
1349 _Jv_JNI_GetStringUTFLength (JNIEnv *, jstring string)
1351 return JvGetStringUTFLength (unwrap (string));
1354 static const char * JNICALL
1355 _Jv_JNI_GetStringUTFChars (JNIEnv *env, jstring string,
1356 jboolean *isCopy)
1360 string = unwrap (string);
1361 if (string == NULL)
1362 return NULL;
1363 jsize len = JvGetStringUTFLength (string);
1364 char *r = (char *) _Jv_Malloc (len + 1);
1365 JvGetStringUTFRegion (string, 0, string->length(), r);
1366 r[len] = '\0';
1368 if (isCopy)
1369 *isCopy = true;
1371 return (const char *) r;
1373 catch (jthrowable t)
1375 env->ex = t;
1376 return NULL;
1380 static void JNICALL
1381 _Jv_JNI_ReleaseStringUTFChars (JNIEnv *, jstring, const char *utf)
1383 _Jv_Free ((void *) utf);
1386 static void JNICALL
1387 _Jv_JNI_GetStringRegion (JNIEnv *env, jstring string, jsize start,
1388 jsize len, jchar *buf)
1390 string = unwrap (string);
1391 jchar *result = _Jv_GetStringChars (string);
1392 if (start < 0 || start > string->length ()
1393 || len < 0 || start + len > string->length ())
1397 env->ex = new java::lang::StringIndexOutOfBoundsException ();
1399 catch (jthrowable t)
1401 env->ex = t;
1404 else
1405 memcpy (buf, &result[start], len * sizeof (jchar));
1408 static void JNICALL
1409 _Jv_JNI_GetStringUTFRegion (JNIEnv *env, jstring str, jsize start,
1410 jsize len, char *buf)
1412 str = unwrap (str);
1414 if (start < 0 || start > str->length ()
1415 || len < 0 || start + len > str->length ())
1419 env->ex = new java::lang::StringIndexOutOfBoundsException ();
1421 catch (jthrowable t)
1423 env->ex = t;
1426 else
1427 _Jv_GetStringUTFRegion (str, start, len, buf);
1430 static const jchar * JNICALL
1431 _Jv_JNI_GetStringCritical (JNIEnv *, jstring str, jboolean *isCopy)
1433 jchar *result = _Jv_GetStringChars (unwrap (str));
1434 if (isCopy)
1435 *isCopy = false;
1436 return result;
1439 static void JNICALL
1440 _Jv_JNI_ReleaseStringCritical (JNIEnv *, jstring, const jchar *)
1442 // Nothing.
1445 static jsize JNICALL
1446 _Jv_JNI_GetArrayLength (JNIEnv *, jarray array)
1448 return unwrap (array)->length;
1451 static jobjectArray JNICALL
1452 _Jv_JNI_NewObjectArray (JNIEnv *env, jsize length,
1453 jclass elementClass, jobject init)
1457 elementClass = unwrap (elementClass);
1458 init = unwrap (init);
1460 _Jv_CheckCast (elementClass, init);
1461 jarray result = JvNewObjectArray (length, elementClass, init);
1462 return (jobjectArray) wrap_value (env, result);
1464 catch (jthrowable t)
1466 env->ex = t;
1467 return NULL;
1471 static jobject JNICALL
1472 _Jv_JNI_GetObjectArrayElement (JNIEnv *env, jobjectArray array,
1473 jsize index)
1475 if ((unsigned) index >= (unsigned) array->length)
1476 _Jv_ThrowBadArrayIndex (index);
1477 jobject *elts = elements (unwrap (array));
1478 return wrap_value (env, elts[index]);
1481 static void JNICALL
1482 _Jv_JNI_SetObjectArrayElement (JNIEnv *env, jobjectArray array,
1483 jsize index, jobject value)
1487 array = unwrap (array);
1488 value = unwrap (value);
1490 _Jv_CheckArrayStore (array, value);
1491 if ((unsigned) index >= (unsigned) array->length)
1492 _Jv_ThrowBadArrayIndex (index);
1493 jobject *elts = elements (array);
1494 elts[index] = value;
1496 catch (jthrowable t)
1498 env->ex = t;
1502 template<typename T, jclass K>
1503 static JArray<T> * JNICALL
1504 _Jv_JNI_NewPrimitiveArray (JNIEnv *env, jsize length)
1508 return (JArray<T> *) wrap_value (env, _Jv_NewPrimArray (K, length));
1510 catch (jthrowable t)
1512 env->ex = t;
1513 return NULL;
1517 template<typename T, jclass K>
1518 static T * JNICALL
1519 _Jv_JNI_GetPrimitiveArrayElements (JNIEnv *env, JArray<T> *array,
1520 jboolean *isCopy)
1522 array = unwrap (array);
1523 if (! _Jv_JNI_check_types (env, array, K))
1524 return NULL;
1525 T *elts = elements (array);
1526 if (isCopy)
1528 // We elect never to copy.
1529 *isCopy = false;
1531 mark_for_gc (array, global_ref_table);
1532 return elts;
1535 template<typename T, jclass K>
1536 static void JNICALL
1537 _Jv_JNI_ReleasePrimitiveArrayElements (JNIEnv *env, JArray<T> *array,
1538 T *, jint /* mode */)
1540 array = unwrap (array);
1541 _Jv_JNI_check_types (env, array, K);
1542 // Note that we ignore MODE. We can do this because we never copy
1543 // the array elements. My reading of the JNI documentation is that
1544 // this is an option for the implementor.
1545 unmark_for_gc (array, global_ref_table);
1548 template<typename T, jclass K>
1549 static void JNICALL
1550 _Jv_JNI_GetPrimitiveArrayRegion (JNIEnv *env, JArray<T> *array,
1551 jsize start, jsize len,
1552 T *buf)
1554 array = unwrap (array);
1555 if (! _Jv_JNI_check_types (env, array, K))
1556 return;
1558 // The cast to unsigned lets us save a comparison.
1559 if (start < 0 || len < 0
1560 || (unsigned long) (start + len) > (unsigned long) array->length)
1564 // FIXME: index.
1565 env->ex = new java::lang::ArrayIndexOutOfBoundsException ();
1567 catch (jthrowable t)
1569 // Could have thown out of memory error.
1570 env->ex = t;
1573 else
1575 T *elts = elements (array) + start;
1576 memcpy (buf, elts, len * sizeof (T));
1580 template<typename T, jclass K>
1581 static void JNICALL
1582 _Jv_JNI_SetPrimitiveArrayRegion (JNIEnv *env, JArray<T> *array,
1583 jsize start, jsize len, const T *buf)
1585 array = unwrap (array);
1586 if (! _Jv_JNI_check_types (env, array, K))
1587 return;
1589 // The cast to unsigned lets us save a comparison.
1590 if (start < 0 || len < 0
1591 || (unsigned long) (start + len) > (unsigned long) array->length)
1595 // FIXME: index.
1596 env->ex = new java::lang::ArrayIndexOutOfBoundsException ();
1598 catch (jthrowable t)
1600 env->ex = t;
1603 else
1605 T *elts = elements (array) + start;
1606 memcpy (elts, buf, len * sizeof (T));
1610 static void * JNICALL
1611 _Jv_JNI_GetPrimitiveArrayCritical (JNIEnv *, jarray array,
1612 jboolean *isCopy)
1614 array = unwrap (array);
1615 // FIXME: does this work?
1616 jclass klass = array->getClass()->getComponentType();
1617 JvAssert (klass->isPrimitive ());
1618 char *r = _Jv_GetArrayElementFromElementType (array, klass);
1619 if (isCopy)
1620 *isCopy = false;
1621 return r;
1624 static void JNICALL
1625 _Jv_JNI_ReleasePrimitiveArrayCritical (JNIEnv *, jarray, void *, jint)
1627 // Nothing.
1630 static jint JNICALL
1631 _Jv_JNI_MonitorEnter (JNIEnv *env, jobject obj)
1635 _Jv_MonitorEnter (unwrap (obj));
1636 return 0;
1638 catch (jthrowable t)
1640 env->ex = t;
1642 return JNI_ERR;
1645 static jint JNICALL
1646 _Jv_JNI_MonitorExit (JNIEnv *env, jobject obj)
1650 _Jv_MonitorExit (unwrap (obj));
1651 return 0;
1653 catch (jthrowable t)
1655 env->ex = t;
1657 return JNI_ERR;
1660 // JDK 1.2
1661 jobject JNICALL
1662 _Jv_JNI_ToReflectedField (JNIEnv *env, jclass cls, jfieldID fieldID,
1663 jboolean)
1667 cls = unwrap (cls);
1668 java::lang::reflect::Field *field = new java::lang::reflect::Field();
1669 field->declaringClass = cls;
1670 field->offset = (char*) fieldID - (char *) cls->fields;
1671 field->name = _Jv_NewStringUtf8Const (fieldID->getNameUtf8Const (cls));
1672 return wrap_value (env, field);
1674 catch (jthrowable t)
1676 env->ex = t;
1678 return NULL;
1681 // JDK 1.2
1682 static jfieldID JNICALL
1683 _Jv_JNI_FromReflectedField (JNIEnv *, jobject f)
1685 using namespace java::lang::reflect;
1687 f = unwrap (f);
1688 Field *field = reinterpret_cast<Field *> (f);
1689 return _Jv_FromReflectedField (field);
1692 jobject JNICALL
1693 _Jv_JNI_ToReflectedMethod (JNIEnv *env, jclass klass, jmethodID id,
1694 jboolean)
1696 using namespace java::lang::reflect;
1698 jobject result = NULL;
1699 klass = unwrap (klass);
1703 if (_Jv_equalUtf8Consts (id->name, init_name))
1705 // A constructor.
1706 Constructor *cons = new Constructor ();
1707 cons->offset = (char *) id - (char *) &klass->methods;
1708 cons->declaringClass = klass;
1709 result = cons;
1711 else
1713 Method *meth = new Method ();
1714 meth->offset = (char *) id - (char *) &klass->methods;
1715 meth->declaringClass = klass;
1716 result = meth;
1719 catch (jthrowable t)
1721 env->ex = t;
1724 return wrap_value (env, result);
1727 static jmethodID JNICALL
1728 _Jv_JNI_FromReflectedMethod (JNIEnv *, jobject method)
1730 using namespace java::lang::reflect;
1731 method = unwrap (method);
1732 if (Method::class$.isInstance (method))
1733 return _Jv_FromReflectedMethod (reinterpret_cast<Method *> (method));
1734 return
1735 _Jv_FromReflectedConstructor (reinterpret_cast<Constructor *> (method));
1738 // JDK 1.2.
1739 jweak JNICALL
1740 _Jv_JNI_NewWeakGlobalRef (JNIEnv *env, jobject obj)
1742 using namespace gnu::gcj::runtime;
1743 JNIWeakRef *ref = NULL;
1747 // This seems weird but I think it is correct.
1748 obj = unwrap (obj);
1749 ref = new JNIWeakRef (obj);
1750 mark_for_gc (ref, global_ref_table);
1752 catch (jthrowable t)
1754 env->ex = t;
1757 return reinterpret_cast<jweak> (ref);
1760 void JNICALL
1761 _Jv_JNI_DeleteWeakGlobalRef (JNIEnv *, jweak obj)
1763 // JDK compatibility.
1764 if (obj == NULL)
1765 return;
1767 using namespace gnu::gcj::runtime;
1768 JNIWeakRef *ref = reinterpret_cast<JNIWeakRef *> (obj);
1769 unmark_for_gc (ref, global_ref_table);
1770 ref->clear ();
1775 // Direct byte buffers.
1777 static jobject JNICALL
1778 _Jv_JNI_NewDirectByteBuffer (JNIEnv *, void *address, jlong length)
1780 using namespace gnu::gcj;
1781 using namespace java::nio;
1782 return new DirectByteBufferImpl$ReadWrite
1783 (reinterpret_cast<RawData *> (address), length);
1786 static void * JNICALL
1787 _Jv_JNI_GetDirectBufferAddress (JNIEnv *, jobject buffer)
1789 using namespace java::nio;
1790 if (! _Jv_IsInstanceOf (buffer, &Buffer::class$))
1791 return NULL;
1792 Buffer *tmp = static_cast<Buffer *> (buffer);
1793 return reinterpret_cast<void *> (tmp->address);
1796 static jlong JNICALL
1797 _Jv_JNI_GetDirectBufferCapacity (JNIEnv *, jobject buffer)
1799 using namespace java::nio;
1800 if (! _Jv_IsInstanceOf (buffer, &Buffer::class$))
1801 return -1;
1802 Buffer *tmp = static_cast<Buffer *> (buffer);
1803 if (tmp->address == NULL)
1804 return -1;
1805 return tmp->capacity();
1808 static jobjectRefType JNICALL
1809 _Jv_JNI_GetObjectRefType (JNIEnv *, MAYBE_UNUSED jobject object)
1811 JvFail("GetObjectRefType not implemented");
1812 return JNIInvalidRefType;
1817 struct NativeMethodCacheEntry : public JNINativeMethod
1819 char *className;
1822 // Hash table of native methods.
1823 static NativeMethodCacheEntry *nathash;
1824 // Number of slots used.
1825 static int nathash_count = 0;
1826 // Number of slots available. Must be power of 2.
1827 static int nathash_size = 0;
1829 #define DELETED_ENTRY ((char *) (~0))
1831 // Compute a hash value for a native method descriptor.
1832 static int
1833 hash (const NativeMethodCacheEntry *method)
1835 char *ptr;
1836 int hash = 0;
1838 ptr = method->className;
1839 while (*ptr)
1840 hash = (31 * hash) + *ptr++;
1842 ptr = method->name;
1843 while (*ptr)
1844 hash = (31 * hash) + *ptr++;
1846 ptr = method->signature;
1847 while (*ptr)
1848 hash = (31 * hash) + *ptr++;
1850 return hash;
1853 // Find the slot where a native method goes.
1854 static NativeMethodCacheEntry *
1855 nathash_find_slot (const NativeMethodCacheEntry *method)
1857 jint h = hash (method);
1858 int step = (h ^ (h >> 16)) | 1;
1859 int w = h & (nathash_size - 1);
1860 int del = -1;
1862 for (;;)
1864 NativeMethodCacheEntry *slotp = &nathash[w];
1865 if (slotp->name == NULL)
1867 if (del >= 0)
1868 return &nathash[del];
1869 else
1870 return slotp;
1872 else if (slotp->name == DELETED_ENTRY)
1873 del = w;
1874 else if (! strcmp (slotp->name, method->name)
1875 && ! strcmp (slotp->signature, method->signature)
1876 && ! strcmp (slotp->className, method->className))
1877 return slotp;
1878 w = (w + step) & (nathash_size - 1);
1882 // Find a method. Return NULL if it isn't in the hash table.
1883 static void *
1884 nathash_find (NativeMethodCacheEntry *method)
1886 if (nathash == NULL)
1887 return NULL;
1888 NativeMethodCacheEntry *slot = nathash_find_slot (method);
1889 if (slot->name == NULL || slot->name == DELETED_ENTRY)
1890 return NULL;
1891 return slot->fnPtr;
1894 static void
1895 natrehash ()
1897 if (nathash == NULL)
1899 nathash_size = 1024;
1900 nathash =
1901 (NativeMethodCacheEntry *) _Jv_AllocBytes (nathash_size
1902 * sizeof (NativeMethodCacheEntry));
1904 else
1906 int savesize = nathash_size;
1907 NativeMethodCacheEntry *savehash = nathash;
1908 nathash_size *= 2;
1909 nathash =
1910 (NativeMethodCacheEntry *) _Jv_AllocBytes (nathash_size
1911 * sizeof (NativeMethodCacheEntry));
1913 for (int i = 0; i < savesize; ++i)
1915 if (savehash[i].name != NULL && savehash[i].name != DELETED_ENTRY)
1917 NativeMethodCacheEntry *slot = nathash_find_slot (&savehash[i]);
1918 *slot = savehash[i];
1924 static void
1925 nathash_add (const NativeMethodCacheEntry *method)
1927 if (3 * nathash_count >= 2 * nathash_size)
1928 natrehash ();
1929 NativeMethodCacheEntry *slot = nathash_find_slot (method);
1930 // If the slot has a real entry in it, then there is no work to do.
1931 if (slot->name != NULL && slot->name != DELETED_ENTRY)
1932 return;
1933 // FIXME: memory leak?
1934 slot->name = strdup (method->name);
1935 slot->className = strdup (method->className);
1936 // This was already strduped in _Jv_JNI_RegisterNatives.
1937 slot->signature = method->signature;
1938 slot->fnPtr = method->fnPtr;
1941 static jint JNICALL
1942 _Jv_JNI_RegisterNatives (JNIEnv *env, jclass klass,
1943 const JNINativeMethod *methods,
1944 jint nMethods)
1946 // Synchronize while we do the work. This must match
1947 // synchronization in some other functions that manipulate or use
1948 // the nathash table.
1949 JvSynchronize sync (global_ref_table);
1951 NativeMethodCacheEntry dottedMethod;
1953 // Look at each descriptor given us, and find the corresponding
1954 // method in the class.
1955 for (int j = 0; j < nMethods; ++j)
1957 bool found = false;
1959 _Jv_Method *imeths = JvGetFirstMethod (klass);
1960 for (int i = 0; i < JvNumMethods (klass); ++i)
1962 _Jv_Method *self = &imeths[i];
1964 // Copy this JNINativeMethod and do a slash to dot
1965 // conversion on the signature.
1966 dottedMethod.name = methods[j].name;
1967 // FIXME: we leak a little memory here if the method
1968 // is not found.
1969 dottedMethod.signature = strdup (methods[j].signature);
1970 dottedMethod.fnPtr = methods[j].fnPtr;
1971 dottedMethod.className = _Jv_GetClassNameUtf8 (klass)->chars();
1972 char *c = dottedMethod.signature;
1973 while (*c)
1975 if (*c == '/')
1976 *c = '.';
1977 c++;
1980 if (! strcmp (self->name->chars (), dottedMethod.name)
1981 && ! strcmp (self->signature->chars (), dottedMethod.signature))
1983 if (! (self->accflags & java::lang::reflect::Modifier::NATIVE))
1984 break;
1986 // Found a match that is native.
1987 found = true;
1988 nathash_add (&dottedMethod);
1990 break;
1994 if (! found)
1996 jstring m = JvNewStringUTF (methods[j].name);
1999 env->ex = new java::lang::NoSuchMethodError (m);
2001 catch (jthrowable t)
2003 env->ex = t;
2005 return JNI_ERR;
2009 return JNI_OK;
2012 static jint JNICALL
2013 _Jv_JNI_UnregisterNatives (JNIEnv *, jclass)
2015 // FIXME -- we could implement this.
2016 return JNI_ERR;
2021 // Add a character to the buffer, encoding properly.
2022 static void
2023 add_char (char *buf, jchar c, int *here)
2025 if (c == '_')
2027 buf[(*here)++] = '_';
2028 buf[(*here)++] = '1';
2030 else if (c == ';')
2032 buf[(*here)++] = '_';
2033 buf[(*here)++] = '2';
2035 else if (c == '[')
2037 buf[(*here)++] = '_';
2038 buf[(*here)++] = '3';
2041 // Also check for `.' here because we might be passed an internal
2042 // qualified class name like `foo.bar'.
2043 else if (c == '/' || c == '.')
2044 buf[(*here)++] = '_';
2045 else if ((c >= '0' && c <= '9')
2046 || (c >= 'a' && c <= 'z')
2047 || (c >= 'A' && c <= 'Z'))
2048 buf[(*here)++] = (char) c;
2049 else
2051 // "Unicode" character.
2052 buf[(*here)++] = '_';
2053 buf[(*here)++] = '0';
2054 for (int i = 0; i < 4; ++i)
2056 int val = c & 0x0f;
2057 buf[(*here) + 3 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
2058 c >>= 4;
2060 *here += 4;
2064 // Compute a mangled name for a native function. This computes the
2065 // long name, and also returns an index which indicates where a NUL
2066 // can be placed to create the short name. This function assumes that
2067 // the buffer is large enough for its results.
2068 static void
2069 mangled_name (jclass klass, _Jv_Utf8Const *func_name,
2070 _Jv_Utf8Const *signature, char *buf, int *long_start)
2072 strcpy (buf, "Java_");
2073 int here = 5;
2075 // Add fully qualified class name.
2076 jchar *chars = _Jv_GetStringChars (klass->getName ());
2077 jint len = klass->getName ()->length ();
2078 for (int i = 0; i < len; ++i)
2079 add_char (buf, chars[i], &here);
2081 // Don't use add_char because we need a literal `_'.
2082 buf[here++] = '_';
2084 const unsigned char *fn = (const unsigned char *) func_name->chars ();
2085 const unsigned char *limit = fn + func_name->len ();
2086 for (int i = 0; ; ++i)
2088 int ch = UTF8_GET (fn, limit);
2089 if (ch < 0)
2090 break;
2091 add_char (buf, ch, &here);
2094 // This is where the long signature begins.
2095 *long_start = here;
2096 buf[here++] = '_';
2097 buf[here++] = '_';
2099 const unsigned char *sig = (const unsigned char *) signature->chars ();
2100 limit = sig + signature->len ();
2101 JvAssert (sig[0] == '(');
2102 ++sig;
2103 while (1)
2105 int ch = UTF8_GET (sig, limit);
2106 if (ch == ')' || ch < 0)
2107 break;
2108 add_char (buf, ch, &here);
2111 buf[here] = '\0';
2114 JNIEnv *
2115 _Jv_GetJNIEnvNewFrameWithLoader (::java::lang::ClassLoader *loader)
2117 JNIEnv *env = _Jv_GetCurrentJNIEnv ();
2118 if (__builtin_expect (env == NULL, false))
2120 env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
2121 env->functions = &_Jv_JNIFunctions;
2122 env->locals = NULL;
2123 // We set env->ex below.
2125 // Set up the bottom, reusable frame.
2126 env->bottom_locals = (_Jv_JNI_LocalFrame *)
2127 _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
2128 + (FRAME_SIZE
2129 * sizeof (jobject)));
2131 env->bottom_locals->marker = MARK_SYSTEM;
2132 env->bottom_locals->size = FRAME_SIZE;
2133 env->bottom_locals->next = NULL;
2134 env->bottom_locals->allocated_p = false;
2135 // We set the klass field below.
2136 memset (&env->bottom_locals->vec[0], 0,
2137 env->bottom_locals->size * sizeof (jobject));
2139 _Jv_SetCurrentJNIEnv (env);
2142 // If we're in a simple JNI call (non-nested), we can just reuse the
2143 // locals frame we allocated many calls ago, back when the env was first
2144 // built, above.
2146 if (__builtin_expect (env->locals == NULL, true))
2148 env->locals = env->bottom_locals;
2149 env->locals->loader = loader;
2151 else
2153 // Alternatively, we might be re-entering JNI, in which case we can't
2154 // reuse the bottom_locals frame, because it is already underneath
2155 // us. So we need to make a new one.
2156 _Jv_JNI_LocalFrame *frame
2157 = (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
2158 + (FRAME_SIZE
2159 * sizeof (jobject)));
2161 frame->marker = MARK_SYSTEM;
2162 frame->size = FRAME_SIZE;
2163 frame->allocated_p = false;
2164 frame->next = env->locals;
2165 frame->loader = loader;
2167 memset (&frame->vec[0], 0,
2168 frame->size * sizeof (jobject));
2170 env->locals = frame;
2173 env->ex = NULL;
2175 return env;
2178 // Return the current thread's JNIEnv; if one does not exist, create
2179 // it. Also create a new system frame for use. This is `extern "C"'
2180 // because the compiler calls it.
2181 extern "C" JNIEnv *
2182 _Jv_GetJNIEnvNewFrame (jclass klass)
2184 return _Jv_GetJNIEnvNewFrameWithLoader (klass->getClassLoaderInternal());
2187 // Destroy the env's reusable resources. This is called from the thread
2188 // destructor "finalize_native" in natThread.cc
2189 void
2190 _Jv_FreeJNIEnv (_Jv_JNIEnv *env)
2192 if (env == NULL)
2193 return;
2195 if (env->bottom_locals != NULL)
2196 _Jv_Free (env->bottom_locals);
2198 _Jv_Free (env);
2201 // Return the function which implements a particular JNI method. If
2202 // we can't find the function, we throw the appropriate exception.
2203 // This is `extern "C"' because the compiler uses it.
2204 extern "C" void *
2205 _Jv_LookupJNIMethod (jclass klass, _Jv_Utf8Const *name,
2206 _Jv_Utf8Const *signature, MAYBE_UNUSED int args_size)
2208 int name_length = name->len();
2209 int sig_length = signature->len();
2210 char buf[10 + 6 * (name_length + sig_length) + 12];
2211 int long_start;
2212 void *function;
2214 // Synchronize on something convenient. Right now we use the hash.
2215 JvSynchronize sync (global_ref_table);
2217 // First see if we have an override in the hash table.
2218 strncpy (buf, name->chars (), name_length);
2219 buf[name_length] = '\0';
2220 strncpy (buf + name_length + 1, signature->chars (), sig_length);
2221 buf[name_length + sig_length + 1] = '\0';
2222 NativeMethodCacheEntry meth;
2223 meth.name = buf;
2224 meth.signature = buf + name_length + 1;
2225 meth.className = _Jv_GetClassNameUtf8(klass)->chars();
2226 function = nathash_find (&meth);
2227 if (function != NULL)
2228 return function;
2230 // If there was no override, then look in the symbol table.
2231 buf[0] = '_';
2232 mangled_name (klass, name, signature, buf + 1, &long_start);
2233 char c = buf[long_start + 1];
2234 buf[long_start + 1] = '\0';
2236 function = _Jv_FindSymbolInExecutable (buf + 1);
2237 #ifdef WIN32
2238 // On Win32, we use the "stdcall" calling convention (see JNICALL
2239 // in jni.h).
2241 // For a function named 'fooBar' that takes 'nn' bytes as arguments,
2242 // by default, MinGW GCC exports it as 'fooBar@nn', MSVC exports it
2243 // as '_fooBar@nn' and Borland C exports it as 'fooBar'. We try to
2244 // take care of all these variations here.
2246 char asz_buf[12]; /* '@' + '2147483647' (32-bit INT_MAX) + '\0' */
2247 char long_nm_sv[11]; /* Ditto, except for the '\0'. */
2249 if (function == NULL)
2251 // We have tried searching for the 'fooBar' form (BCC) - now
2252 // try the others.
2254 // First, save the part of the long name that will be damaged
2255 // by appending '@nn'.
2256 memcpy (long_nm_sv, (buf + long_start + 1 + 1), sizeof (long_nm_sv));
2258 sprintf (asz_buf, "@%d", args_size);
2259 strcat (buf, asz_buf);
2261 // Search for the '_fooBar@nn' form (MSVC).
2262 function = _Jv_FindSymbolInExecutable (buf);
2264 if (function == NULL)
2266 // Search for the 'fooBar@nn' form (MinGW GCC).
2267 function = _Jv_FindSymbolInExecutable (buf + 1);
2270 #endif /* WIN32 */
2272 if (function == NULL)
2274 buf[long_start + 1] = c;
2275 #ifdef WIN32
2276 // Restore the part of the long name that was damaged by
2277 // appending the '@nn'.
2278 memcpy ((buf + long_start + 1 + 1), long_nm_sv, sizeof (long_nm_sv));
2279 #endif /* WIN32 */
2280 function = _Jv_FindSymbolInExecutable (buf + 1);
2281 if (function == NULL)
2283 #ifdef WIN32
2284 strcat (buf, asz_buf);
2285 function = _Jv_FindSymbolInExecutable (buf);
2286 if (function == NULL)
2287 function = _Jv_FindSymbolInExecutable (buf + 1);
2289 if (function == NULL)
2290 #endif /* WIN32 */
2292 jstring str = JvNewStringUTF (name->chars ());
2293 throw new java::lang::UnsatisfiedLinkError (str);
2298 return function;
2301 #ifdef INTERPRETER
2303 // This function is the stub which is used to turn an ordinary (CNI)
2304 // method call into a JNI call.
2305 void
2306 _Jv_JNIMethod::call (ffi_cif *, void *ret, INTERP_FFI_RAW_TYPE *args,
2307 void *__this)
2309 _Jv_JNIMethod* _this = (_Jv_JNIMethod *) __this;
2311 JNIEnv *env = _Jv_GetJNIEnvNewFrame (_this->defining_class);
2313 // FIXME: we should mark every reference parameter as a local. For
2314 // now we assume a conservative GC, and we assume that the
2315 // references are on the stack somewhere.
2317 // We cache the value that we find, of course, but if we don't find
2318 // a value we don't cache that fact -- we might subsequently load a
2319 // library which finds the function in question.
2321 // Synchronize on a convenient object to ensure sanity in case two
2322 // threads reach this point for the same function at the same
2323 // time.
2324 JvSynchronize sync (global_ref_table);
2325 if (_this->function == NULL)
2327 int args_size = sizeof (JNIEnv *) + _this->args_raw_size;
2329 if (_this->self->accflags & java::lang::reflect::Modifier::STATIC)
2330 args_size += sizeof (_this->defining_class);
2332 _this->function = _Jv_LookupJNIMethod (_this->defining_class,
2333 _this->self->name,
2334 _this->self->signature,
2335 args_size);
2339 JvAssert (_this->args_raw_size % sizeof (INTERP_FFI_RAW_TYPE) == 0);
2340 INTERP_FFI_RAW_TYPE
2341 real_args[2 + _this->args_raw_size / sizeof (INTERP_FFI_RAW_TYPE)];
2342 int offset = 0;
2344 // First argument is always the environment pointer.
2345 real_args[offset++].ptr = env;
2347 // For a static method, we pass in the Class. For non-static
2348 // methods, the `this' argument is already handled.
2349 if ((_this->self->accflags & java::lang::reflect::Modifier::STATIC))
2350 real_args[offset++].ptr = _this->defining_class;
2352 // In libgcj, the callee synchronizes.
2353 jobject sync = NULL;
2354 if ((_this->self->accflags & java::lang::reflect::Modifier::SYNCHRONIZED))
2356 if ((_this->self->accflags & java::lang::reflect::Modifier::STATIC))
2357 sync = _this->defining_class;
2358 else
2359 sync = (jobject) args[0].ptr;
2360 _Jv_MonitorEnter (sync);
2363 // Copy over passed-in arguments.
2364 memcpy (&real_args[offset], args, _this->args_raw_size);
2366 // Add a frame to the composite (interpreted + JNI) call stack
2367 java::lang::Thread *thread = java::lang::Thread::currentThread();
2368 _Jv_NativeFrame nat_frame (_this, thread);
2370 // The actual call to the JNI function.
2371 #if FFI_NATIVE_RAW_API
2372 ffi_raw_call (&_this->jni_cif, (void (*)()) _this->function,
2373 ret, real_args);
2374 #else
2375 ffi_java_raw_call (&_this->jni_cif, (void (*)()) _this->function,
2376 ret, real_args);
2377 #endif
2379 // We might need to unwrap a JNI weak reference here.
2380 if (_this->jni_cif.rtype == &ffi_type_pointer)
2382 _Jv_value *val = (_Jv_value *) ret;
2383 val->object_value = unwrap (val->object_value);
2386 if (sync != NULL)
2387 _Jv_MonitorExit (sync);
2389 _Jv_JNI_PopSystemFrame (env);
2392 #endif /* INTERPRETER */
2397 // Invocation API.
2400 // An internal helper function.
2401 static jint
2402 _Jv_JNI_AttachCurrentThread (JavaVM *, jstring name, void **penv,
2403 void *args, jboolean is_daemon)
2405 JavaVMAttachArgs *attach = reinterpret_cast<JavaVMAttachArgs *> (args);
2406 java::lang::ThreadGroup *group = NULL;
2408 if (attach)
2410 // FIXME: do we really want to support 1.1?
2411 if (attach->version != JNI_VERSION_1_4
2412 && attach->version != JNI_VERSION_1_2
2413 && attach->version != JNI_VERSION_1_1)
2414 return JNI_EVERSION;
2416 JvAssert (java::lang::ThreadGroup::class$.isInstance (attach->group));
2417 group = reinterpret_cast<java::lang::ThreadGroup *> (attach->group);
2420 // Attaching an already-attached thread is a no-op.
2421 JNIEnv *env = _Jv_GetCurrentJNIEnv ();
2422 if (env != NULL)
2424 *penv = reinterpret_cast<void *> (env);
2425 return 0;
2428 env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
2429 if (env == NULL)
2430 return JNI_ERR;
2431 env->functions = &_Jv_JNIFunctions;
2432 env->ex = NULL;
2433 env->bottom_locals
2434 = (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
2435 + (FRAME_SIZE
2436 * sizeof (jobject)));
2437 env->locals = env->bottom_locals;
2438 if (env->locals == NULL)
2440 _Jv_Free (env);
2441 return JNI_ERR;
2444 env->locals->allocated_p = false;
2445 env->locals->marker = MARK_SYSTEM;
2446 env->locals->size = FRAME_SIZE;
2447 env->locals->loader = NULL;
2448 env->locals->next = NULL;
2450 for (int i = 0; i < env->locals->size; ++i)
2451 env->locals->vec[i] = NULL;
2453 *penv = reinterpret_cast<void *> (env);
2455 // This thread might already be a Java thread -- this function might
2456 // have been called simply to set the new JNIEnv.
2457 if (_Jv_ThreadCurrent () == NULL)
2461 if (is_daemon)
2462 _Jv_AttachCurrentThreadAsDaemon (name, group);
2463 else
2464 _Jv_AttachCurrentThread (name, group);
2466 catch (jthrowable t)
2468 return JNI_ERR;
2471 _Jv_SetCurrentJNIEnv (env);
2473 return 0;
2476 // This is the one actually used by JNI.
2477 jint JNICALL
2478 _Jv_JNI_AttachCurrentThread (JavaVM *vm, void **penv, void *args)
2480 return _Jv_JNI_AttachCurrentThread (vm, NULL, penv, args, false);
2483 static jint JNICALL
2484 _Jv_JNI_AttachCurrentThreadAsDaemon (JavaVM *vm, void **penv,
2485 void *args)
2487 return _Jv_JNI_AttachCurrentThread (vm, NULL, penv, args, true);
2490 static jint JNICALL
2491 _Jv_JNI_DestroyJavaVM (JavaVM *vm)
2493 JvAssert (_Jv_the_vm && vm == _Jv_the_vm);
2495 union
2497 JNIEnv *env;
2498 void *env_p;
2501 if (_Jv_ThreadCurrent () != NULL)
2503 jstring main_name;
2504 // This sucks.
2507 main_name = JvNewStringLatin1 ("main");
2509 catch (jthrowable t)
2511 return JNI_ERR;
2514 jint r = _Jv_JNI_AttachCurrentThread (vm, main_name, &env_p,
2515 NULL, false);
2516 if (r < 0)
2517 return r;
2519 else
2520 env = _Jv_GetCurrentJNIEnv ();
2522 _Jv_ThreadWait ();
2524 // Docs say that this always returns an error code.
2525 return JNI_ERR;
2528 jint JNICALL
2529 _Jv_JNI_DetachCurrentThread (JavaVM *)
2531 jint code = _Jv_DetachCurrentThread ();
2532 return code ? JNI_EDETACHED : 0;
2535 static jint JNICALL
2536 _Jv_JNI_GetEnv (JavaVM *, void **penv, jint version)
2538 if (_Jv_ThreadCurrent () == NULL)
2540 *penv = NULL;
2541 return JNI_EDETACHED;
2544 #ifdef ENABLE_JVMPI
2545 // Handle JVMPI requests.
2546 if (version == JVMPI_VERSION_1)
2548 *penv = (void *) &_Jv_JVMPI_Interface;
2549 return 0;
2551 #endif
2553 #ifdef INTERPRETER
2554 // Handle JVMTI requests
2555 if (version == JVMTI_VERSION_1_0)
2557 *penv = (void *) _Jv_GetJVMTIEnv ();
2558 return 0;
2560 #endif
2562 // FIXME: do we really want to support 1.1?
2563 if (version != JNI_VERSION_1_4 && version != JNI_VERSION_1_2
2564 && version != JNI_VERSION_1_1)
2566 *penv = NULL;
2567 return JNI_EVERSION;
2570 *penv = (void *) _Jv_GetCurrentJNIEnv ();
2571 return 0;
2574 JavaVM *
2575 _Jv_GetJavaVM ()
2577 // FIXME: synchronize
2578 if (! _Jv_the_vm)
2580 JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
2581 if (nvm != NULL)
2582 nvm->functions = &_Jv_JNI_InvokeFunctions;
2583 _Jv_the_vm = nvm;
2586 // If this is a Java thread, we want to make sure it has an
2587 // associated JNIEnv.
2588 if (_Jv_ThreadCurrent () != NULL)
2590 void *ignore;
2591 _Jv_JNI_AttachCurrentThread (_Jv_the_vm, &ignore, NULL);
2594 return _Jv_the_vm;
2597 static jint JNICALL
2598 _Jv_JNI_GetJavaVM (JNIEnv *, JavaVM **vm)
2600 *vm = _Jv_GetJavaVM ();
2601 return *vm == NULL ? JNI_ERR : JNI_OK;
2606 #define RESERVED NULL
2608 struct JNINativeInterface_ _Jv_JNIFunctions =
2610 RESERVED,
2611 RESERVED,
2612 RESERVED,
2613 RESERVED,
2614 _Jv_JNI_GetVersion, // GetVersion
2615 _Jv_JNI_DefineClass, // DefineClass
2616 _Jv_JNI_FindClass, // FindClass
2617 _Jv_JNI_FromReflectedMethod, // FromReflectedMethod
2618 _Jv_JNI_FromReflectedField, // FromReflectedField
2619 _Jv_JNI_ToReflectedMethod, // ToReflectedMethod
2620 _Jv_JNI_GetSuperclass, // GetSuperclass
2621 _Jv_JNI_IsAssignableFrom, // IsAssignableFrom
2622 _Jv_JNI_ToReflectedField, // ToReflectedField
2623 _Jv_JNI_Throw, // Throw
2624 _Jv_JNI_ThrowNew, // ThrowNew
2625 _Jv_JNI_ExceptionOccurred, // ExceptionOccurred
2626 _Jv_JNI_ExceptionDescribe, // ExceptionDescribe
2627 _Jv_JNI_ExceptionClear, // ExceptionClear
2628 _Jv_JNI_FatalError, // FatalError
2630 _Jv_JNI_PushLocalFrame, // PushLocalFrame
2631 _Jv_JNI_PopLocalFrame, // PopLocalFrame
2632 _Jv_JNI_NewGlobalRef, // NewGlobalRef
2633 _Jv_JNI_DeleteGlobalRef, // DeleteGlobalRef
2634 _Jv_JNI_DeleteLocalRef, // DeleteLocalRef
2636 _Jv_JNI_IsSameObject, // IsSameObject
2638 _Jv_JNI_NewLocalRef, // NewLocalRef
2639 _Jv_JNI_EnsureLocalCapacity, // EnsureLocalCapacity
2641 _Jv_JNI_AllocObject, // AllocObject
2642 _Jv_JNI_NewObject, // NewObject
2643 _Jv_JNI_NewObjectV, // NewObjectV
2644 _Jv_JNI_NewObjectA, // NewObjectA
2645 _Jv_JNI_GetObjectClass, // GetObjectClass
2646 _Jv_JNI_IsInstanceOf, // IsInstanceOf
2647 _Jv_JNI_GetAnyMethodID<false>, // GetMethodID
2649 _Jv_JNI_CallMethod<jobject>, // CallObjectMethod
2650 _Jv_JNI_CallMethodV<jobject>, // CallObjectMethodV
2651 _Jv_JNI_CallMethodA<jobject>, // CallObjectMethodA
2652 _Jv_JNI_CallMethod<jboolean>, // CallBooleanMethod
2653 _Jv_JNI_CallMethodV<jboolean>, // CallBooleanMethodV
2654 _Jv_JNI_CallMethodA<jboolean>, // CallBooleanMethodA
2655 _Jv_JNI_CallMethod<jbyte>, // CallByteMethod
2656 _Jv_JNI_CallMethodV<jbyte>, // CallByteMethodV
2657 _Jv_JNI_CallMethodA<jbyte>, // CallByteMethodA
2658 _Jv_JNI_CallMethod<jchar>, // CallCharMethod
2659 _Jv_JNI_CallMethodV<jchar>, // CallCharMethodV
2660 _Jv_JNI_CallMethodA<jchar>, // CallCharMethodA
2661 _Jv_JNI_CallMethod<jshort>, // CallShortMethod
2662 _Jv_JNI_CallMethodV<jshort>, // CallShortMethodV
2663 _Jv_JNI_CallMethodA<jshort>, // CallShortMethodA
2664 _Jv_JNI_CallMethod<jint>, // CallIntMethod
2665 _Jv_JNI_CallMethodV<jint>, // CallIntMethodV
2666 _Jv_JNI_CallMethodA<jint>, // CallIntMethodA
2667 _Jv_JNI_CallMethod<jlong>, // CallLongMethod
2668 _Jv_JNI_CallMethodV<jlong>, // CallLongMethodV
2669 _Jv_JNI_CallMethodA<jlong>, // CallLongMethodA
2670 _Jv_JNI_CallMethod<jfloat>, // CallFloatMethod
2671 _Jv_JNI_CallMethodV<jfloat>, // CallFloatMethodV
2672 _Jv_JNI_CallMethodA<jfloat>, // CallFloatMethodA
2673 _Jv_JNI_CallMethod<jdouble>, // CallDoubleMethod
2674 _Jv_JNI_CallMethodV<jdouble>, // CallDoubleMethodV
2675 _Jv_JNI_CallMethodA<jdouble>, // CallDoubleMethodA
2676 _Jv_JNI_CallVoidMethod, // CallVoidMethod
2677 _Jv_JNI_CallVoidMethodV, // CallVoidMethodV
2678 _Jv_JNI_CallVoidMethodA, // CallVoidMethodA
2680 // Nonvirtual method invocation functions follow.
2681 _Jv_JNI_CallAnyMethod<jobject, nonvirtual>, // CallNonvirtualObjectMethod
2682 _Jv_JNI_CallAnyMethodV<jobject, nonvirtual>, // CallNonvirtualObjectMethodV
2683 _Jv_JNI_CallAnyMethodA<jobject, nonvirtual>, // CallNonvirtualObjectMethodA
2684 _Jv_JNI_CallAnyMethod<jboolean, nonvirtual>, // CallNonvirtualBooleanMethod
2685 _Jv_JNI_CallAnyMethodV<jboolean, nonvirtual>, // CallNonvirtualBooleanMethodV
2686 _Jv_JNI_CallAnyMethodA<jboolean, nonvirtual>, // CallNonvirtualBooleanMethodA
2687 _Jv_JNI_CallAnyMethod<jbyte, nonvirtual>, // CallNonvirtualByteMethod
2688 _Jv_JNI_CallAnyMethodV<jbyte, nonvirtual>, // CallNonvirtualByteMethodV
2689 _Jv_JNI_CallAnyMethodA<jbyte, nonvirtual>, // CallNonvirtualByteMethodA
2690 _Jv_JNI_CallAnyMethod<jchar, nonvirtual>, // CallNonvirtualCharMethod
2691 _Jv_JNI_CallAnyMethodV<jchar, nonvirtual>, // CallNonvirtualCharMethodV
2692 _Jv_JNI_CallAnyMethodA<jchar, nonvirtual>, // CallNonvirtualCharMethodA
2693 _Jv_JNI_CallAnyMethod<jshort, nonvirtual>, // CallNonvirtualShortMethod
2694 _Jv_JNI_CallAnyMethodV<jshort, nonvirtual>, // CallNonvirtualShortMethodV
2695 _Jv_JNI_CallAnyMethodA<jshort, nonvirtual>, // CallNonvirtualShortMethodA
2696 _Jv_JNI_CallAnyMethod<jint, nonvirtual>, // CallNonvirtualIntMethod
2697 _Jv_JNI_CallAnyMethodV<jint, nonvirtual>, // CallNonvirtualIntMethodV
2698 _Jv_JNI_CallAnyMethodA<jint, nonvirtual>, // CallNonvirtualIntMethodA
2699 _Jv_JNI_CallAnyMethod<jlong, nonvirtual>, // CallNonvirtualLongMethod
2700 _Jv_JNI_CallAnyMethodV<jlong, nonvirtual>, // CallNonvirtualLongMethodV
2701 _Jv_JNI_CallAnyMethodA<jlong, nonvirtual>, // CallNonvirtualLongMethodA
2702 _Jv_JNI_CallAnyMethod<jfloat, nonvirtual>, // CallNonvirtualFloatMethod
2703 _Jv_JNI_CallAnyMethodV<jfloat, nonvirtual>, // CallNonvirtualFloatMethodV
2704 _Jv_JNI_CallAnyMethodA<jfloat, nonvirtual>, // CallNonvirtualFloatMethodA
2705 _Jv_JNI_CallAnyMethod<jdouble, nonvirtual>, // CallNonvirtualDoubleMethod
2706 _Jv_JNI_CallAnyMethodV<jdouble, nonvirtual>, // CallNonvirtualDoubleMethodV
2707 _Jv_JNI_CallAnyMethodA<jdouble, nonvirtual>, // CallNonvirtualDoubleMethodA
2708 _Jv_JNI_CallAnyVoidMethod<nonvirtual>, // CallNonvirtualVoidMethod
2709 _Jv_JNI_CallAnyVoidMethodV<nonvirtual>, // CallNonvirtualVoidMethodV
2710 _Jv_JNI_CallAnyVoidMethodA<nonvirtual>, // CallNonvirtualVoidMethodA
2712 _Jv_JNI_GetAnyFieldID<false>, // GetFieldID
2713 _Jv_JNI_GetField<jobject>, // GetObjectField
2714 _Jv_JNI_GetField<jboolean>, // GetBooleanField
2715 _Jv_JNI_GetField<jbyte>, // GetByteField
2716 _Jv_JNI_GetField<jchar>, // GetCharField
2717 _Jv_JNI_GetField<jshort>, // GetShortField
2718 _Jv_JNI_GetField<jint>, // GetIntField
2719 _Jv_JNI_GetField<jlong>, // GetLongField
2720 _Jv_JNI_GetField<jfloat>, // GetFloatField
2721 _Jv_JNI_GetField<jdouble>, // GetDoubleField
2722 _Jv_JNI_SetField, // SetObjectField
2723 _Jv_JNI_SetField, // SetBooleanField
2724 _Jv_JNI_SetField, // SetByteField
2725 _Jv_JNI_SetField, // SetCharField
2726 _Jv_JNI_SetField, // SetShortField
2727 _Jv_JNI_SetField, // SetIntField
2728 _Jv_JNI_SetField, // SetLongField
2729 _Jv_JNI_SetField, // SetFloatField
2730 _Jv_JNI_SetField, // SetDoubleField
2731 _Jv_JNI_GetAnyMethodID<true>, // GetStaticMethodID
2733 _Jv_JNI_CallStaticMethod<jobject>, // CallStaticObjectMethod
2734 _Jv_JNI_CallStaticMethodV<jobject>, // CallStaticObjectMethodV
2735 _Jv_JNI_CallStaticMethodA<jobject>, // CallStaticObjectMethodA
2736 _Jv_JNI_CallStaticMethod<jboolean>, // CallStaticBooleanMethod
2737 _Jv_JNI_CallStaticMethodV<jboolean>, // CallStaticBooleanMethodV
2738 _Jv_JNI_CallStaticMethodA<jboolean>, // CallStaticBooleanMethodA
2739 _Jv_JNI_CallStaticMethod<jbyte>, // CallStaticByteMethod
2740 _Jv_JNI_CallStaticMethodV<jbyte>, // CallStaticByteMethodV
2741 _Jv_JNI_CallStaticMethodA<jbyte>, // CallStaticByteMethodA
2742 _Jv_JNI_CallStaticMethod<jchar>, // CallStaticCharMethod
2743 _Jv_JNI_CallStaticMethodV<jchar>, // CallStaticCharMethodV
2744 _Jv_JNI_CallStaticMethodA<jchar>, // CallStaticCharMethodA
2745 _Jv_JNI_CallStaticMethod<jshort>, // CallStaticShortMethod
2746 _Jv_JNI_CallStaticMethodV<jshort>, // CallStaticShortMethodV
2747 _Jv_JNI_CallStaticMethodA<jshort>, // CallStaticShortMethodA
2748 _Jv_JNI_CallStaticMethod<jint>, // CallStaticIntMethod
2749 _Jv_JNI_CallStaticMethodV<jint>, // CallStaticIntMethodV
2750 _Jv_JNI_CallStaticMethodA<jint>, // CallStaticIntMethodA
2751 _Jv_JNI_CallStaticMethod<jlong>, // CallStaticLongMethod
2752 _Jv_JNI_CallStaticMethodV<jlong>, // CallStaticLongMethodV
2753 _Jv_JNI_CallStaticMethodA<jlong>, // CallStaticLongMethodA
2754 _Jv_JNI_CallStaticMethod<jfloat>, // CallStaticFloatMethod
2755 _Jv_JNI_CallStaticMethodV<jfloat>, // CallStaticFloatMethodV
2756 _Jv_JNI_CallStaticMethodA<jfloat>, // CallStaticFloatMethodA
2757 _Jv_JNI_CallStaticMethod<jdouble>, // CallStaticDoubleMethod
2758 _Jv_JNI_CallStaticMethodV<jdouble>, // CallStaticDoubleMethodV
2759 _Jv_JNI_CallStaticMethodA<jdouble>, // CallStaticDoubleMethodA
2760 _Jv_JNI_CallStaticVoidMethod, // CallStaticVoidMethod
2761 _Jv_JNI_CallStaticVoidMethodV, // CallStaticVoidMethodV
2762 _Jv_JNI_CallStaticVoidMethodA, // CallStaticVoidMethodA
2764 _Jv_JNI_GetAnyFieldID<true>, // GetStaticFieldID
2765 _Jv_JNI_GetStaticField<jobject>, // GetStaticObjectField
2766 _Jv_JNI_GetStaticField<jboolean>, // GetStaticBooleanField
2767 _Jv_JNI_GetStaticField<jbyte>, // GetStaticByteField
2768 _Jv_JNI_GetStaticField<jchar>, // GetStaticCharField
2769 _Jv_JNI_GetStaticField<jshort>, // GetStaticShortField
2770 _Jv_JNI_GetStaticField<jint>, // GetStaticIntField
2771 _Jv_JNI_GetStaticField<jlong>, // GetStaticLongField
2772 _Jv_JNI_GetStaticField<jfloat>, // GetStaticFloatField
2773 _Jv_JNI_GetStaticField<jdouble>, // GetStaticDoubleField
2774 _Jv_JNI_SetStaticField, // SetStaticObjectField
2775 _Jv_JNI_SetStaticField, // SetStaticBooleanField
2776 _Jv_JNI_SetStaticField, // SetStaticByteField
2777 _Jv_JNI_SetStaticField, // SetStaticCharField
2778 _Jv_JNI_SetStaticField, // SetStaticShortField
2779 _Jv_JNI_SetStaticField, // SetStaticIntField
2780 _Jv_JNI_SetStaticField, // SetStaticLongField
2781 _Jv_JNI_SetStaticField, // SetStaticFloatField
2782 _Jv_JNI_SetStaticField, // SetStaticDoubleField
2783 _Jv_JNI_NewString, // NewString
2784 _Jv_JNI_GetStringLength, // GetStringLength
2785 _Jv_JNI_GetStringChars, // GetStringChars
2786 _Jv_JNI_ReleaseStringChars, // ReleaseStringChars
2787 _Jv_JNI_NewStringUTF, // NewStringUTF
2788 _Jv_JNI_GetStringUTFLength, // GetStringUTFLength
2789 _Jv_JNI_GetStringUTFChars, // GetStringUTFChars
2790 _Jv_JNI_ReleaseStringUTFChars, // ReleaseStringUTFChars
2791 _Jv_JNI_GetArrayLength, // GetArrayLength
2792 _Jv_JNI_NewObjectArray, // NewObjectArray
2793 _Jv_JNI_GetObjectArrayElement, // GetObjectArrayElement
2794 _Jv_JNI_SetObjectArrayElement, // SetObjectArrayElement
2795 _Jv_JNI_NewPrimitiveArray<jboolean, JvPrimClass (boolean)>,
2796 // NewBooleanArray
2797 _Jv_JNI_NewPrimitiveArray<jbyte, JvPrimClass (byte)>, // NewByteArray
2798 _Jv_JNI_NewPrimitiveArray<jchar, JvPrimClass (char)>, // NewCharArray
2799 _Jv_JNI_NewPrimitiveArray<jshort, JvPrimClass (short)>, // NewShortArray
2800 _Jv_JNI_NewPrimitiveArray<jint, JvPrimClass (int)>, // NewIntArray
2801 _Jv_JNI_NewPrimitiveArray<jlong, JvPrimClass (long)>, // NewLongArray
2802 _Jv_JNI_NewPrimitiveArray<jfloat, JvPrimClass (float)>, // NewFloatArray
2803 _Jv_JNI_NewPrimitiveArray<jdouble, JvPrimClass (double)>, // NewDoubleArray
2804 _Jv_JNI_GetPrimitiveArrayElements<jboolean, JvPrimClass (boolean)>,
2805 // GetBooleanArrayElements
2806 _Jv_JNI_GetPrimitiveArrayElements<jbyte, JvPrimClass (byte)>,
2807 // GetByteArrayElements
2808 _Jv_JNI_GetPrimitiveArrayElements<jchar, JvPrimClass (char)>,
2809 // GetCharArrayElements
2810 _Jv_JNI_GetPrimitiveArrayElements<jshort, JvPrimClass (short)>,
2811 // GetShortArrayElements
2812 _Jv_JNI_GetPrimitiveArrayElements<jint, JvPrimClass (int)>,
2813 // GetIntArrayElements
2814 _Jv_JNI_GetPrimitiveArrayElements<jlong, JvPrimClass (long)>,
2815 // GetLongArrayElements
2816 _Jv_JNI_GetPrimitiveArrayElements<jfloat, JvPrimClass (float)>,
2817 // GetFloatArrayElements
2818 _Jv_JNI_GetPrimitiveArrayElements<jdouble, JvPrimClass (double)>,
2819 // GetDoubleArrayElements
2820 _Jv_JNI_ReleasePrimitiveArrayElements<jboolean, JvPrimClass (boolean)>,
2821 // ReleaseBooleanArrayElements
2822 _Jv_JNI_ReleasePrimitiveArrayElements<jbyte, JvPrimClass (byte)>,
2823 // ReleaseByteArrayElements
2824 _Jv_JNI_ReleasePrimitiveArrayElements<jchar, JvPrimClass (char)>,
2825 // ReleaseCharArrayElements
2826 _Jv_JNI_ReleasePrimitiveArrayElements<jshort, JvPrimClass (short)>,
2827 // ReleaseShortArrayElements
2828 _Jv_JNI_ReleasePrimitiveArrayElements<jint, JvPrimClass (int)>,
2829 // ReleaseIntArrayElements
2830 _Jv_JNI_ReleasePrimitiveArrayElements<jlong, JvPrimClass (long)>,
2831 // ReleaseLongArrayElements
2832 _Jv_JNI_ReleasePrimitiveArrayElements<jfloat, JvPrimClass (float)>,
2833 // ReleaseFloatArrayElements
2834 _Jv_JNI_ReleasePrimitiveArrayElements<jdouble, JvPrimClass (double)>,
2835 // ReleaseDoubleArrayElements
2836 _Jv_JNI_GetPrimitiveArrayRegion<jboolean, JvPrimClass (boolean)>,
2837 // GetBooleanArrayRegion
2838 _Jv_JNI_GetPrimitiveArrayRegion<jbyte, JvPrimClass (byte)>,
2839 // GetByteArrayRegion
2840 _Jv_JNI_GetPrimitiveArrayRegion<jchar, JvPrimClass (char)>,
2841 // GetCharArrayRegion
2842 _Jv_JNI_GetPrimitiveArrayRegion<jshort, JvPrimClass (short)>,
2843 // GetShortArrayRegion
2844 _Jv_JNI_GetPrimitiveArrayRegion<jint, JvPrimClass (int)>,
2845 // GetIntArrayRegion
2846 _Jv_JNI_GetPrimitiveArrayRegion<jlong, JvPrimClass (long)>,
2847 // GetLongArrayRegion
2848 _Jv_JNI_GetPrimitiveArrayRegion<jfloat, JvPrimClass (float)>,
2849 // GetFloatArrayRegion
2850 _Jv_JNI_GetPrimitiveArrayRegion<jdouble, JvPrimClass (double)>,
2851 // GetDoubleArrayRegion
2852 _Jv_JNI_SetPrimitiveArrayRegion<jboolean, JvPrimClass (boolean)>,
2853 // SetBooleanArrayRegion
2854 _Jv_JNI_SetPrimitiveArrayRegion<jbyte, JvPrimClass (byte)>,
2855 // SetByteArrayRegion
2856 _Jv_JNI_SetPrimitiveArrayRegion<jchar, JvPrimClass (char)>,
2857 // SetCharArrayRegion
2858 _Jv_JNI_SetPrimitiveArrayRegion<jshort, JvPrimClass (short)>,
2859 // SetShortArrayRegion
2860 _Jv_JNI_SetPrimitiveArrayRegion<jint, JvPrimClass (int)>,
2861 // SetIntArrayRegion
2862 _Jv_JNI_SetPrimitiveArrayRegion<jlong, JvPrimClass (long)>,
2863 // SetLongArrayRegion
2864 _Jv_JNI_SetPrimitiveArrayRegion<jfloat, JvPrimClass (float)>,
2865 // SetFloatArrayRegion
2866 _Jv_JNI_SetPrimitiveArrayRegion<jdouble, JvPrimClass (double)>,
2867 // SetDoubleArrayRegion
2868 _Jv_JNI_RegisterNatives, // RegisterNatives
2869 _Jv_JNI_UnregisterNatives, // UnregisterNatives
2870 _Jv_JNI_MonitorEnter, // MonitorEnter
2871 _Jv_JNI_MonitorExit, // MonitorExit
2872 _Jv_JNI_GetJavaVM, // GetJavaVM
2874 _Jv_JNI_GetStringRegion, // GetStringRegion
2875 _Jv_JNI_GetStringUTFRegion, // GetStringUTFRegion
2876 _Jv_JNI_GetPrimitiveArrayCritical, // GetPrimitiveArrayCritical
2877 _Jv_JNI_ReleasePrimitiveArrayCritical, // ReleasePrimitiveArrayCritical
2878 _Jv_JNI_GetStringCritical, // GetStringCritical
2879 _Jv_JNI_ReleaseStringCritical, // ReleaseStringCritical
2881 _Jv_JNI_NewWeakGlobalRef, // NewWeakGlobalRef
2882 _Jv_JNI_DeleteWeakGlobalRef, // DeleteWeakGlobalRef
2884 _Jv_JNI_ExceptionCheck, // ExceptionCheck
2886 _Jv_JNI_NewDirectByteBuffer, // NewDirectByteBuffer
2887 _Jv_JNI_GetDirectBufferAddress, // GetDirectBufferAddress
2888 _Jv_JNI_GetDirectBufferCapacity, // GetDirectBufferCapacity
2890 _Jv_JNI_GetObjectRefType // GetObjectRefType
2893 struct JNIInvokeInterface_ _Jv_JNI_InvokeFunctions =
2895 RESERVED,
2896 RESERVED,
2897 RESERVED,
2899 _Jv_JNI_DestroyJavaVM,
2900 _Jv_JNI_AttachCurrentThread,
2901 _Jv_JNI_DetachCurrentThread,
2902 _Jv_JNI_GetEnv,
2903 _Jv_JNI_AttachCurrentThreadAsDaemon