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fixes for host gcc 4.6.1
[zpugcc/jano.git] / toolchain / gcc / libjava / jni.cc
blob007aabc40085a89668b227b5ac37dc21e2e9bc27
1 // jni.cc - JNI implementation, including the jump table.
2
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation
4
5 This file is part of libgcj.
6
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
9 details. */
10
11 #include <config.h>
12
13 #include <stdio.h>
14 #include <stddef.h>
15 #include <string.h>
16
17 #include <gcj/cni.h>
18 #include <jvm.h>
19 #include <java-assert.h>
20 #include <jni.h>
21 #ifdef ENABLE_JVMPI
22 #include <jvmpi.h>
23 #endif
24
25 #include <java/lang/Class.h>
26 #include <java/lang/ClassLoader.h>
27 #include <java/lang/Throwable.h>
28 #include <java/lang/ArrayIndexOutOfBoundsException.h>
29 #include <java/lang/StringIndexOutOfBoundsException.h>
30 #include <java/lang/UnsatisfiedLinkError.h>
31 #include <java/lang/InstantiationException.h>
32 #include <java/lang/NoSuchFieldError.h>
33 #include <java/lang/NoSuchMethodError.h>
34 #include <java/lang/reflect/Constructor.h>
35 #include <java/lang/reflect/Method.h>
36 #include <java/lang/reflect/Modifier.h>
37 #include <java/lang/OutOfMemoryError.h>
38 #include <java/lang/Integer.h>
39 #include <java/lang/ThreadGroup.h>
40 #include <java/lang/Thread.h>
41 #include <java/lang/IllegalAccessError.h>
42 #include <java/nio/DirectByteBufferImpl.h>
43 #include <java/util/IdentityHashMap.h>
44 #include <gnu/gcj/RawData.h>
45
46 #include <gcj/method.h>
47 #include <gcj/field.h>
48
49 #include <java-interp.h>
50 #include <java-threads.h>
51
52 using namespace gcj;
53
54 // This enum is used to select different template instantiations in
55 // the invocation code.
56 enum invocation_type
57 {
58 normal,
59 nonvirtual,
60 static_type,
61 constructor
62 };
63
64 // Forward declarations.
65 extern struct JNINativeInterface _Jv_JNIFunctions;
66 extern struct JNIInvokeInterface _Jv_JNI_InvokeFunctions;
67
68 // Number of slots in the default frame. The VM must allow at least
69 // 16.
70 #define FRAME_SIZE 32
71
72 // Mark value indicating this is an overflow frame.
73 #define MARK_NONE 0
74 // Mark value indicating this is a user frame.
75 #define MARK_USER 1
76 // Mark value indicating this is a system frame.
77 #define MARK_SYSTEM 2
78
79 // This structure is used to keep track of local references.
80 struct _Jv_JNI_LocalFrame
81 {
82 // This is true if this frame object represents a pushed frame (eg
83 // from PushLocalFrame).
84 int marker : 2;
85
86 // Number of elements in frame.
87 int size : 30;
88
89 // Next frame in chain.
90 _Jv_JNI_LocalFrame *next;
91
92 // The elements. These are allocated using the C "struct hack".
93 jobject vec[0];
94 };
95
96 // This holds a reference count for all local references.
97 static java::util::IdentityHashMap *local_ref_table;
98 // This holds a reference count for all global references.
99 static java::util::IdentityHashMap *global_ref_table;
100
101 // The only VM.
102 static JavaVM *the_vm;
103
104 #ifdef ENABLE_JVMPI
105 // The only JVMPI interface description.
106 static JVMPI_Interface _Jv_JVMPI_Interface;
107
108 static jint
109 jvmpiEnableEvent (jint event_type, void *)
110 {
111 switch (event_type)
112 {
113 case JVMPI_EVENT_OBJECT_ALLOC:
114 _Jv_JVMPI_Notify_OBJECT_ALLOC = _Jv_JVMPI_Interface.NotifyEvent;
115 break;
116
117 case JVMPI_EVENT_THREAD_START:
118 _Jv_JVMPI_Notify_THREAD_START = _Jv_JVMPI_Interface.NotifyEvent;
119 break;
120
121 case JVMPI_EVENT_THREAD_END:
122 _Jv_JVMPI_Notify_THREAD_END = _Jv_JVMPI_Interface.NotifyEvent;
123 break;
124
125 default:
126 return JVMPI_NOT_AVAILABLE;
127 }
128
129 return JVMPI_SUCCESS;
130 }
131
132 static jint
133 jvmpiDisableEvent (jint event_type, void *)
134 {
135 switch (event_type)
136 {
137 case JVMPI_EVENT_OBJECT_ALLOC:
138 _Jv_JVMPI_Notify_OBJECT_ALLOC = NULL;
139 break;
140
141 default:
142 return JVMPI_NOT_AVAILABLE;
143 }
144
145 return JVMPI_SUCCESS;
146 }
147 #endif
148
149 \f
150
151 void
152 _Jv_JNI_Init (void)
153 {
154 local_ref_table = new java::util::IdentityHashMap;
155 global_ref_table = new java::util::IdentityHashMap;
156
157 #ifdef ENABLE_JVMPI
158 _Jv_JVMPI_Interface.version = 1;
159 _Jv_JVMPI_Interface.EnableEvent = &jvmpiEnableEvent;
160 _Jv_JVMPI_Interface.DisableEvent = &jvmpiDisableEvent;
161 _Jv_JVMPI_Interface.EnableGC = &_Jv_EnableGC;
162 _Jv_JVMPI_Interface.DisableGC = &_Jv_DisableGC;
163 _Jv_JVMPI_Interface.RunGC = &_Jv_RunGC;
164 #endif
165 }
166
167 // Tell the GC that a certain pointer is live.
168 static void
169 mark_for_gc (jobject obj, java::util::IdentityHashMap *ref_table)
170 {
171 JvSynchronize sync (ref_table);
172
173 using namespace java::lang;
174 Integer *refcount = (Integer *) ref_table->get (obj);
175 jint val = (refcount == NULL) ? 0 : refcount->intValue ();
176 // FIXME: what about out of memory error?
177 ref_table->put (obj, new Integer (val + 1));
178 }
179
180 // Unmark a pointer.
181 static void
182 unmark_for_gc (jobject obj, java::util::IdentityHashMap *ref_table)
183 {
184 JvSynchronize sync (ref_table);
185
186 using namespace java::lang;
187 Integer *refcount = (Integer *) ref_table->get (obj);
188 JvAssert (refcount);
189 jint val = refcount->intValue () - 1;
190 JvAssert (val >= 0);
191 if (val == 0)
192 ref_table->remove (obj);
193 else
194 // FIXME: what about out of memory error?
195 ref_table->put (obj, new Integer (val));
196 }
197
198 // "Unwrap" some random non-reference type. This exists to simplify
199 // other template functions.
200 template<typename T>
201 static T
202 unwrap (T val)
203 {
204 return val;
205 }
206
207 // Unwrap a weak reference, if required.
208 template<typename T>
209 static T *
210 unwrap (T *obj)
211 {
212 using namespace gnu::gcj::runtime;
213 // We can compare the class directly because JNIWeakRef is `final'.
214 // Doing it this way is much faster.
215 if (obj == NULL || obj->getClass () != &JNIWeakRef::class$)
216 return obj;
217 JNIWeakRef *wr = reinterpret_cast<JNIWeakRef *> (obj);
218 return reinterpret_cast<T *> (wr->get ());
219 }
220
221 \f
222
223 static jobject
224 (JNICALL _Jv_JNI_NewGlobalRef) (JNIEnv *, jobject obj)
225 {
226 // This seems weird but I think it is correct.
227 obj = unwrap (obj);
228 mark_for_gc (obj, global_ref_table);
229 return obj;
230 }
231
232 static void
233 (JNICALL _Jv_JNI_DeleteGlobalRef) (JNIEnv *, jobject obj)
234 {
235 // This seems weird but I think it is correct.
236 obj = unwrap (obj);
237 unmark_for_gc (obj, global_ref_table);
238 }
239
240 static void
241 (JNICALL _Jv_JNI_DeleteLocalRef) (JNIEnv *env, jobject obj)
242 {
243 _Jv_JNI_LocalFrame *frame;
244
245 // This seems weird but I think it is correct.
246 obj = unwrap (obj);
247
248 for (frame = env->locals; frame != NULL; frame = frame->next)
249 {
250 for (int i = 0; i < frame->size; ++i)
251 {
252 if (frame->vec[i] == obj)
253 {
254 frame->vec[i] = NULL;
255 unmark_for_gc (obj, local_ref_table);
256 return;
257 }
258 }
259
260 // Don't go past a marked frame.
261 JvAssert (frame->marker == MARK_NONE);
262 }
263
264 JvAssert (0);
265 }
266
267 static jint
268 (JNICALL _Jv_JNI_EnsureLocalCapacity) (JNIEnv *env, jint size)
269 {
270 // It is easier to just always allocate a new frame of the requested
271 // size. This isn't the most efficient thing, but for now we don't
272 // care. Note that _Jv_JNI_PushLocalFrame relies on this right now.
273
274 _Jv_JNI_LocalFrame *frame;
275 try
276 {
277 frame = (_Jv_JNI_LocalFrame *) _Jv_Malloc (sizeof (_Jv_JNI_LocalFrame)
278 + size * sizeof (jobject));
279 }
280 catch (jthrowable t)
281 {
282 env->ex = t;
283 return JNI_ERR;
284 }
285
286 frame->marker = MARK_NONE;
287 frame->size = size;
288 memset (&frame->vec[0], 0, size * sizeof (jobject));
289 frame->next = env->locals;
290 env->locals = frame;
291
292 return 0;
293 }
294
295 static jint
296 (JNICALL _Jv_JNI_PushLocalFrame) (JNIEnv *env, jint size)
297 {
298 jint r = _Jv_JNI_EnsureLocalCapacity (env, size);
299 if (r < 0)
300 return r;
301
302 // The new frame is on top.
303 env->locals->marker = MARK_USER;
304
305 return 0;
306 }
307
308 static jobject
309 (JNICALL _Jv_JNI_NewLocalRef) (JNIEnv *env, jobject obj)
310 {
311 // This seems weird but I think it is correct.
312 obj = unwrap (obj);
313
314 // Try to find an open slot somewhere in the topmost frame.
315 _Jv_JNI_LocalFrame *frame = env->locals;
316 bool done = false, set = false;
317 for (; frame != NULL && ! done; frame = frame->next)
318 {
319 for (int i = 0; i < frame->size; ++i)
320 {
321 if (frame->vec[i] == NULL)
322 {
323 set = true;
324 done = true;
325 frame->vec[i] = obj;
326 break;
327 }
328 }
329
330 // If we found a slot, or if the frame we just searched is the
331 // mark frame, then we are done.
332 if (done || frame == NULL || frame->marker != MARK_NONE)
333 break;
334 }
335
336 if (! set)
337 {
338 // No slots, so we allocate a new frame. According to the spec
339 // we could just die here. FIXME: return value.
340 _Jv_JNI_EnsureLocalCapacity (env, 16);
341 // We know the first element of the new frame will be ok.
342 env->locals->vec[0] = obj;
343 }
344
345 mark_for_gc (obj, local_ref_table);
346 return obj;
347 }
348
349 static jobject
350 (JNICALL _Jv_JNI_PopLocalFrame) (JNIEnv *env, jobject result, int stop)
351 {
352 _Jv_JNI_LocalFrame *rf = env->locals;
353
354 bool done = false;
355 while (rf != NULL && ! done)
356 {
357 for (int i = 0; i < rf->size; ++i)
358 if (rf->vec[i] != NULL)
359 unmark_for_gc (rf->vec[i], local_ref_table);
360
361 // If the frame we just freed is the marker frame, we are done.
362 done = (rf->marker == stop);
363
364 _Jv_JNI_LocalFrame *n = rf->next;
365 // When N==NULL, we've reached the stack-allocated frame, and we
366 // must not free it. However, we must be sure to clear all its
367 // elements, since we might conceivably reuse it.
368 if (n == NULL)
369 {
370 memset (&rf->vec[0], 0, rf->size * sizeof (jobject));
371 break;
372 }
373
374 _Jv_Free (rf);
375 rf = n;
376 }
377
378 // Update the local frame information.
379 env->locals = rf;
380
381 return result == NULL ? NULL : _Jv_JNI_NewLocalRef (env, result);
382 }
383
384 static jobject
385 (JNICALL _Jv_JNI_PopLocalFrame) (JNIEnv *env, jobject result)
386 {
387 return _Jv_JNI_PopLocalFrame (env, result, MARK_USER);
388 }
389
390 // Make sure an array's type is compatible with the type of the
391 // destination.
392 template<typename T>
393 static bool
394 _Jv_JNI_check_types (JNIEnv *env, JArray<T> *array, jclass K)
395 {
396 jclass klass = array->getClass()->getComponentType();
397 if (__builtin_expect (klass != K, false))
398 {
399 env->ex = new java::lang::IllegalAccessError ();
400 return false;
401 }
402 else
403 return true;
404 }
405
406 // Pop a `system' frame from the stack. This is `extern "C"' as it is
407 // used by the compiler.
408 extern "C" void
409 _Jv_JNI_PopSystemFrame (JNIEnv *env)
410 {
411 _Jv_JNI_PopLocalFrame (env, NULL, MARK_SYSTEM);
412
413 if (env->ex)
414 {
415 jthrowable t = env->ex;
416 env->ex = NULL;
417 throw t;
418 }
419 }
420
421 template<typename T> T extract_from_jvalue(jvalue const & t);
422 template<> jboolean extract_from_jvalue(jvalue const & jv) { return jv.z; }
423 template<> jbyte extract_from_jvalue(jvalue const & jv) { return jv.b; }
424 template<> jchar extract_from_jvalue(jvalue const & jv) { return jv.c; }
425 template<> jshort extract_from_jvalue(jvalue const & jv) { return jv.s; }
426 template<> jint extract_from_jvalue(jvalue const & jv) { return jv.i; }
427 template<> jlong extract_from_jvalue(jvalue const & jv) { return jv.j; }
428 template<> jfloat extract_from_jvalue(jvalue const & jv) { return jv.f; }
429 template<> jdouble extract_from_jvalue(jvalue const & jv) { return jv.d; }
430 template<> jobject extract_from_jvalue(jvalue const & jv) { return jv.l; }
431
432
433 // This function is used from other template functions. It wraps the
434 // return value appropriately; we specialize it so that object returns
435 // are turned into local references.
436 template<typename T>
437 static T
438 wrap_value (JNIEnv *, T value)
439 {
440 return value;
441 }
442
443 // This specialization is used for jobject, jclass, jstring, jarray,
444 // etc.
445 template<typename R, typename T>
446 static T *
447 wrap_value (JNIEnv *env, T *value)
448 {
449 return (value == NULL
450 ? value
451 : (T *) _Jv_JNI_NewLocalRef (env, (jobject) value));
452 }
453
454 \f
455
456 static jint
457 (JNICALL _Jv_JNI_GetVersion) (JNIEnv *)
458 {
459 return JNI_VERSION_1_4;
460 }
461
462 static jclass
463 (JNICALL _Jv_JNI_DefineClass) (JNIEnv *env, const char *name, jobject loader,
464 const jbyte *buf, jsize bufLen)
465 {
466 try
467 {
468 loader = unwrap (loader);
469
470 jstring sname = JvNewStringUTF (name);
471 jbyteArray bytes = JvNewByteArray (bufLen);
472
473 jbyte *elts = elements (bytes);
474 memcpy (elts, buf, bufLen * sizeof (jbyte));
475
476 java::lang::ClassLoader *l
477 = reinterpret_cast<java::lang::ClassLoader *> (loader);
478
479 jclass result = l->defineClass (sname, bytes, 0, bufLen);
480 return (jclass) wrap_value (env, result);
481 }
482 catch (jthrowable t)
483 {
484 env->ex = t;
485 return NULL;
486 }
487 }
488
489 static jclass
490 (JNICALL _Jv_JNI_FindClass) (JNIEnv *env, const char *name)
491 {
492 // FIXME: assume that NAME isn't too long.
493 int len = strlen (name);
494 char s[len + 1];
495 for (int i = 0; i <= len; ++i)
496 s[i] = (name[i] == '/') ? '.' : name[i];
497
498 jclass r = NULL;
499 try
500 {
501 // This might throw an out of memory exception.
502 jstring n = JvNewStringUTF (s);
503
504 java::lang::ClassLoader *loader = NULL;
505 if (env->klass != NULL)
506 loader = env->klass->getClassLoaderInternal ();
507
508 if (loader == NULL)
509 {
510 // FIXME: should use getBaseClassLoader, but we don't have that
511 // yet.
512 loader = java::lang::ClassLoader::getSystemClassLoader ();
513 }
514
515 r = loader->loadClass (n);
516 }
517 catch (jthrowable t)
518 {
519 env->ex = t;
520 }
521
522 return (jclass) wrap_value (env, r);
523 }
524
525 static jclass
526 (JNICALL _Jv_JNI_GetSuperclass) (JNIEnv *env, jclass clazz)
527 {
528 return (jclass) wrap_value (env, unwrap (clazz)->getSuperclass ());
529 }
530
531 static jboolean
532 (JNICALL _Jv_JNI_IsAssignableFrom) (JNIEnv *, jclass clazz1, jclass clazz2)
533 {
534 return unwrap (clazz1)->isAssignableFrom (unwrap (clazz2));
535 }
536
537 static jint
538 (JNICALL _Jv_JNI_Throw) (JNIEnv *env, jthrowable obj)
539 {
540 // We check in case the user did some funky cast.
541 obj = unwrap (obj);
542 JvAssert (obj != NULL && java::lang::Throwable::class$.isInstance (obj));
543 env->ex = obj;
544 return 0;
545 }
546
547 static jint
548 (JNICALL _Jv_JNI_ThrowNew) (JNIEnv *env, jclass clazz, const char *message)
549 {
550 using namespace java::lang::reflect;
551
552 clazz = unwrap (clazz);
553 JvAssert (java::lang::Throwable::class$.isAssignableFrom (clazz));
554
555 int r = JNI_OK;
556 try
557 {
558 JArray<jclass> *argtypes
559 = (JArray<jclass> *) JvNewObjectArray (1, &java::lang::Class::class$,
560 NULL);
561
562 jclass *elts = elements (argtypes);
563 elts[0] = &StringClass;
564
565 Constructor *cons = clazz->getConstructor (argtypes);
566
567 jobjectArray values = JvNewObjectArray (1, &StringClass, NULL);
568 jobject *velts = elements (values);
569 velts[0] = JvNewStringUTF (message);
570
571 jobject obj = cons->newInstance (values);
572
573 env->ex = reinterpret_cast<jthrowable> (obj);
574 }
575 catch (jthrowable t)
576 {
577 env->ex = t;
578 r = JNI_ERR;
579 }
580
581 return r;
582 }
583
584 static jthrowable
585 (JNICALL _Jv_JNI_ExceptionOccurred) (JNIEnv *env)
586 {
587 return (jthrowable) wrap_value (env, env->ex);
588 }
589
590 static void
591 (JNICALL _Jv_JNI_ExceptionDescribe) (JNIEnv *env)
592 {
593 if (env->ex != NULL)
594 env->ex->printStackTrace();
595 }
596
597 static void
598 (JNICALL _Jv_JNI_ExceptionClear) (JNIEnv *env)
599 {
600 env->ex = NULL;
601 }
602
603 static jboolean
604 (JNICALL _Jv_JNI_ExceptionCheck) (JNIEnv *env)
605 {
606 return env->ex != NULL;
607 }
608
609 static void
610 (JNICALL _Jv_JNI_FatalError) (JNIEnv *, const char *message)
611 {
612 JvFail (message);
613 }
614
615 \f
616
617 static jboolean
618 (JNICALL _Jv_JNI_IsSameObject) (JNIEnv *, jobject obj1, jobject obj2)
619 {
620 return unwrap (obj1) == unwrap (obj2);
621 }
622
623 static jobject
624 (JNICALL _Jv_JNI_AllocObject) (JNIEnv *env, jclass clazz)
625 {
626 jobject obj = NULL;
627 using namespace java::lang::reflect;
628
629 try
630 {
631 clazz = unwrap (clazz);
632 JvAssert (clazz && ! clazz->isArray ());
633 if (clazz->isInterface() || Modifier::isAbstract(clazz->getModifiers()))
634 env->ex = new java::lang::InstantiationException ();
635 else
636 obj = JvAllocObject (clazz);
637 }
638 catch (jthrowable t)
639 {
640 env->ex = t;
641 }
642
643 return wrap_value (env, obj);
644 }
645
646 static jclass
647 (JNICALL _Jv_JNI_GetObjectClass) (JNIEnv *env, jobject obj)
648 {
649 obj = unwrap (obj);
650 JvAssert (obj);
651 return (jclass) wrap_value (env, obj->getClass());
652 }
653
654 static jboolean
655 (JNICALL _Jv_JNI_IsInstanceOf) (JNIEnv *, jobject obj, jclass clazz)
656 {
657 return unwrap (clazz)->isInstance(unwrap (obj));
658 }
659
660 \f
661
662 //
663 // This section concerns method invocation.
664 //
665
666 template<jboolean is_static>
667 static jmethodID
668 (JNICALL _Jv_JNI_GetAnyMethodID) (JNIEnv *env, jclass clazz,
669 const char *name, const char *sig)
670 {
671 try
672 {
673 clazz = unwrap (clazz);
674 _Jv_InitClass (clazz);
675
676 _Jv_Utf8Const *name_u = _Jv_makeUtf8Const ((char *) name, -1);
677
678 // FIXME: assume that SIG isn't too long.
679 int len = strlen (sig);
680 char s[len + 1];
681 for (int i = 0; i <= len; ++i)
682 s[i] = (sig[i] == '/') ? '.' : sig[i];
683 _Jv_Utf8Const *sig_u = _Jv_makeUtf8Const ((char *) s, -1);
684
685 JvAssert (! clazz->isPrimitive());
686
687 using namespace java::lang::reflect;
688
689 while (clazz != NULL)
690 {
691 jint count = JvNumMethods (clazz);
692 jmethodID meth = JvGetFirstMethod (clazz);
693
694 for (jint i = 0; i < count; ++i)
695 {
696 if (((is_static && Modifier::isStatic (meth->accflags))
697 || (! is_static && ! Modifier::isStatic (meth->accflags)))
698 && _Jv_equalUtf8Consts (meth->name, name_u)
699 && _Jv_equalUtf8Consts (meth->signature, sig_u))
700 return meth;
701
702 meth = meth->getNextMethod();
703 }
704
705 clazz = clazz->getSuperclass ();
706 }
707
708 env->ex = new java::lang::NoSuchMethodError ();
709 }
710 catch (jthrowable t)
711 {
712 env->ex = t;
713 }
714
715 return NULL;
716 }
717
718 // This is a helper function which turns a va_list into an array of
719 // `jvalue's. It needs signature information in order to do its work.
720 // The array of values must already be allocated.
721 static void
722 array_from_valist (jvalue *values, JArray<jclass> *arg_types, va_list vargs)
723 {
724 jclass *arg_elts = elements (arg_types);
725 for (int i = 0; i < arg_types->length; ++i)
726 {
727 // Here we assume that sizeof(int) >= sizeof(jint), because we
728 // use `int' when decoding the varargs. Likewise for
729 // float, and double. Also we assume that sizeof(jlong) >=
730 // sizeof(int), i.e. that jlong values are not further
731 // promoted.
732 JvAssert (sizeof (int) >= sizeof (jint));
733 JvAssert (sizeof (jlong) >= sizeof (int));
734 JvAssert (sizeof (double) >= sizeof (jfloat));
735 JvAssert (sizeof (double) >= sizeof (jdouble));
736 if (arg_elts[i] == JvPrimClass (byte))
737 values[i].b = (jbyte) va_arg (vargs, int);
738 else if (arg_elts[i] == JvPrimClass (short))
739 values[i].s = (jshort) va_arg (vargs, int);
740 else if (arg_elts[i] == JvPrimClass (int))
741 values[i].i = (jint) va_arg (vargs, int);
742 else if (arg_elts[i] == JvPrimClass (long))
743 values[i].j = (jlong) va_arg (vargs, jlong);
744 else if (arg_elts[i] == JvPrimClass (float))
745 values[i].f = (jfloat) va_arg (vargs, double);
746 else if (arg_elts[i] == JvPrimClass (double))
747 values[i].d = (jdouble) va_arg (vargs, double);
748 else if (arg_elts[i] == JvPrimClass (boolean))
749 values[i].z = (jboolean) va_arg (vargs, int);
750 else if (arg_elts[i] == JvPrimClass (char))
751 values[i].c = (jchar) va_arg (vargs, int);
752 else
753 {
754 // An object.
755 values[i].l = unwrap (va_arg (vargs, jobject));
756 }
757 }
758 }
759
760 // This can call any sort of method: virtual, "nonvirtual", static, or
761 // constructor.
762 template<typename T, invocation_type style>
763 static T
764 (JNICALL _Jv_JNI_CallAnyMethodV) (JNIEnv *env, jobject obj, jclass klass,
765 jmethodID id, va_list vargs)
766 {
767 obj = unwrap (obj);
768 klass = unwrap (klass);
769
770 jclass decl_class = klass ? klass : obj->getClass ();
771 JvAssert (decl_class != NULL);
772
773 jclass return_type;
774 JArray<jclass> *arg_types;
775
776 try
777 {
778 _Jv_GetTypesFromSignature (id, decl_class,
779 &arg_types, &return_type);
780
781 jvalue args[arg_types->length];
782 array_from_valist (args, arg_types, vargs);
783
784 // For constructors we need to pass the Class we are instantiating.
785 if (style == constructor)
786 return_type = klass;
787
788 jvalue result;
789 _Jv_CallAnyMethodA (obj, return_type, id,
790 style == constructor,
791 style == normal,
792 arg_types, args, &result);
793
794 return wrap_value (env, extract_from_jvalue<T>(result));
795 }
796 catch (jthrowable t)
797 {
798 env->ex = t;
799 }
800
801 return wrap_value (env, (T) 0);
802 }
803
804 template<typename T, invocation_type style>
805 static T
806 (JNICALL _Jv_JNI_CallAnyMethod) (JNIEnv *env, jobject obj, jclass klass,
807 jmethodID method, ...)
808 {
809 va_list args;
810 T result;
811
812 va_start (args, method);
813 result = _Jv_JNI_CallAnyMethodV<T, style> (env, obj, klass, method, args);
814 va_end (args);
815
816 return result;
817 }
818
819 template<typename T, invocation_type style>
820 static T
821 (JNICALL _Jv_JNI_CallAnyMethodA) (JNIEnv *env, jobject obj, jclass klass,
822 jmethodID id, jvalue *args)
823 {
824 obj = unwrap (obj);
825 klass = unwrap (klass);
826
827 jclass decl_class = klass ? klass : obj->getClass ();
828 JvAssert (decl_class != NULL);
829
830 jclass return_type;
831 JArray<jclass> *arg_types;
832 try
833 {
834 _Jv_GetTypesFromSignature (id, decl_class,
835 &arg_types, &return_type);
836
837 // For constructors we need to pass the Class we are instantiating.
838 if (style == constructor)
839 return_type = klass;
840
841 // Unwrap arguments as required. Eww.
842 jclass *type_elts = elements (arg_types);
843 jvalue arg_copy[arg_types->length];
844 for (int i = 0; i < arg_types->length; ++i)
845 {
846 if (type_elts[i]->isPrimitive ())
847 arg_copy[i] = args[i];
848 else
849 arg_copy[i].l = unwrap (args[i].l);
850 }
851
852 jvalue result;
853 _Jv_CallAnyMethodA (obj, return_type, id,
854 style == constructor,
855 style == normal,
856 arg_types, arg_copy, &result);
857
858 return wrap_value (env, extract_from_jvalue<T>(result));
859 }
860 catch (jthrowable t)
861 {
862 env->ex = t;
863 }
864
865 return wrap_value (env, (T) 0);
866 }
867
868 template<invocation_type style>
869 static void
870 (JNICALL _Jv_JNI_CallAnyVoidMethodV) (JNIEnv *env, jobject obj, jclass klass,
871 jmethodID id, va_list vargs)
872 {
873 obj = unwrap (obj);
874 klass = unwrap (klass);
875
876 jclass decl_class = klass ? klass : obj->getClass ();
877 JvAssert (decl_class != NULL);
878
879 jclass return_type;
880 JArray<jclass> *arg_types;
881 try
882 {
883 _Jv_GetTypesFromSignature (id, decl_class,
884 &arg_types, &return_type);
885
886 jvalue args[arg_types->length];
887 array_from_valist (args, arg_types, vargs);
888
889 // For constructors we need to pass the Class we are instantiating.
890 if (style == constructor)
891 return_type = klass;
892
893 _Jv_CallAnyMethodA (obj, return_type, id,
894 style == constructor,
895 style == normal,
896 arg_types, args, NULL);
897 }
898 catch (jthrowable t)
899 {
900 env->ex = t;
901 }
902 }
903
904 template<invocation_type style>
905 static void
906 (JNICALL _Jv_JNI_CallAnyVoidMethod) (JNIEnv *env, jobject obj, jclass klass,
907 jmethodID method, ...)
908 {
909 va_list args;
910
911 va_start (args, method);
912 _Jv_JNI_CallAnyVoidMethodV<style> (env, obj, klass, method, args);
913 va_end (args);
914 }
915
916 template<invocation_type style>
917 static void
918 (JNICALL _Jv_JNI_CallAnyVoidMethodA) (JNIEnv *env, jobject obj, jclass klass,
919 jmethodID id, jvalue *args)
920 {
921 jclass decl_class = klass ? klass : obj->getClass ();
922 JvAssert (decl_class != NULL);
923
924 jclass return_type;
925 JArray<jclass> *arg_types;
926 try
927 {
928 _Jv_GetTypesFromSignature (id, decl_class,
929 &arg_types, &return_type);
930
931 // Unwrap arguments as required. Eww.
932 jclass *type_elts = elements (arg_types);
933 jvalue arg_copy[arg_types->length];
934 for (int i = 0; i < arg_types->length; ++i)
935 {
936 if (type_elts[i]->isPrimitive ())
937 arg_copy[i] = args[i];
938 else
939 arg_copy[i].l = unwrap (args[i].l);
940 }
941
942 _Jv_CallAnyMethodA (obj, return_type, id,
943 style == constructor,
944 style == normal,
945 arg_types, args, NULL);
946 }
947 catch (jthrowable t)
948 {
949 env->ex = t;
950 }
951 }
952
953 // Functions with this signature are used to implement functions in
954 // the CallMethod family.
955 template<typename T>
956 static T
957 (JNICALL _Jv_JNI_CallMethodV) (JNIEnv *env, jobject obj,
958 jmethodID id, va_list args)
959 {
960 return _Jv_JNI_CallAnyMethodV<T, normal> (env, obj, NULL, id, args);
961 }
962
963 // Functions with this signature are used to implement functions in
964 // the CallMethod family.
965 template<typename T>
966 static T
967 (JNICALL _Jv_JNI_CallMethod) (JNIEnv *env, jobject obj, jmethodID id, ...)
968 {
969 va_list args;
970 T result;
971
972 va_start (args, id);
973 result = _Jv_JNI_CallAnyMethodV<T, normal> (env, obj, NULL, id, args);
974 va_end (args);
975
976 return result;
977 }
978
979 // Functions with this signature are used to implement functions in
980 // the CallMethod family.
981 template<typename T>
982 static T
983 (JNICALL _Jv_JNI_CallMethodA) (JNIEnv *env, jobject obj,
984 jmethodID id, jvalue *args)
985 {
986 return _Jv_JNI_CallAnyMethodA<T, normal> (env, obj, NULL, id, args);
987 }
988
989 static void
990 (JNICALL _Jv_JNI_CallVoidMethodV) (JNIEnv *env, jobject obj,
991 jmethodID id, va_list args)
992 {
993 _Jv_JNI_CallAnyVoidMethodV<normal> (env, obj, NULL, id, args);
994 }
995
996 static void
997 (JNICALL _Jv_JNI_CallVoidMethod) (JNIEnv *env, jobject obj, jmethodID id, ...)
998 {
999 va_list args;
1000
1001 va_start (args, id);
1002 _Jv_JNI_CallAnyVoidMethodV<normal> (env, obj, NULL, id, args);
1003 va_end (args);
1004 }
1005
1006 static void
1007 (JNICALL _Jv_JNI_CallVoidMethodA) (JNIEnv *env, jobject obj,
1008 jmethodID id, jvalue *args)
1009 {
1010 _Jv_JNI_CallAnyVoidMethodA<normal> (env, obj, NULL, id, args);
1011 }
1012
1013 // Functions with this signature are used to implement functions in
1014 // the CallStaticMethod family.
1015 template<typename T>
1016 static T
1017 (JNICALL _Jv_JNI_CallStaticMethodV) (JNIEnv *env, jclass klass,
1018 jmethodID id, va_list args)
1019 {
1020 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1021 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1022
1023 return _Jv_JNI_CallAnyMethodV<T, static_type> (env, NULL, klass, id, args);
1024 }
1025
1026 // Functions with this signature are used to implement functions in
1027 // the CallStaticMethod family.
1028 template<typename T>
1029 static T
1030 (JNICALL _Jv_JNI_CallStaticMethod) (JNIEnv *env, jclass klass,
1031 jmethodID id, ...)
1032 {
1033 va_list args;
1034 T result;
1035
1036 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1037 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1038
1039 va_start (args, id);
1040 result = _Jv_JNI_CallAnyMethodV<T, static_type> (env, NULL, klass,
1041 id, args);
1042 va_end (args);
1043
1044 return result;
1045 }
1046
1047 // Functions with this signature are used to implement functions in
1048 // the CallStaticMethod family.
1049 template<typename T>
1050 static T
1051 (JNICALL _Jv_JNI_CallStaticMethodA) (JNIEnv *env, jclass klass, jmethodID id,
1052 jvalue *args)
1053 {
1054 JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
1055 JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
1056
1057 return _Jv_JNI_CallAnyMethodA<T, static_type> (env, NULL, klass, id, args);
1058 }
1059
1060 static void
1061 (JNICALL _Jv_JNI_CallStaticVoidMethodV) (JNIEnv *env, jclass klass,
1062 jmethodID id, va_list args)
1063 {
1064 _Jv_JNI_CallAnyVoidMethodV<static_type> (env, NULL, klass, id, args);
1065 }
1066
1067 static void
1068 (JNICALL _Jv_JNI_CallStaticVoidMethod) (JNIEnv *env, jclass klass,
1069 jmethodID id, ...)
1070 {
1071 va_list args;
1072
1073 va_start (args, id);
1074 _Jv_JNI_CallAnyVoidMethodV<static_type> (env, NULL, klass, id, args);
1075 va_end (args);
1076 }
1077
1078 static void
1079 (JNICALL _Jv_JNI_CallStaticVoidMethodA) (JNIEnv *env, jclass klass,
1080 jmethodID id, jvalue *args)
1081 {
1082 _Jv_JNI_CallAnyVoidMethodA<static_type> (env, NULL, klass, id, args);
1083 }
1084
1085 static jobject
1086 (JNICALL _Jv_JNI_NewObjectV) (JNIEnv *env, jclass klass,
1087 jmethodID id, va_list args)
1088 {
1089 JvAssert (klass && ! klass->isArray ());
1090 JvAssert (! strcmp (id->name->data, "<init>")
1091 && id->signature->length > 2
1092 && id->signature->data[0] == '('
1093 && ! strcmp (&id->signature->data[id->signature->length - 2],
1094 ")V"));
1095
1096 return _Jv_JNI_CallAnyMethodV<jobject, constructor> (env, NULL, klass,
1097 id, args);
1098 }
1099
1100 static jobject
1101 (JNICALL _Jv_JNI_NewObject) (JNIEnv *env, jclass klass, jmethodID id, ...)
1102 {
1103 JvAssert (klass && ! klass->isArray ());
1104 JvAssert (! strcmp (id->name->data, "<init>")
1105 && id->signature->length > 2
1106 && id->signature->data[0] == '('
1107 && ! strcmp (&id->signature->data[id->signature->length - 2],
1108 ")V"));
1109
1110 va_list args;
1111 jobject result;
1112
1113 va_start (args, id);
1114 result = _Jv_JNI_CallAnyMethodV<jobject, constructor> (env, NULL, klass,
1115 id, args);
1116 va_end (args);
1117
1118 return result;
1119 }
1120
1121 static jobject
1122 (JNICALL _Jv_JNI_NewObjectA) (JNIEnv *env, jclass klass, jmethodID id,
1123 jvalue *args)
1124 {
1125 JvAssert (klass && ! klass->isArray ());
1126 JvAssert (! strcmp (id->name->data, "<init>")
1127 && id->signature->length > 2
1128 && id->signature->data[0] == '('
1129 && ! strcmp (&id->signature->data[id->signature->length - 2],
1130 ")V"));
1131
1132 return _Jv_JNI_CallAnyMethodA<jobject, constructor> (env, NULL, klass,
1133 id, args);
1134 }
1135
1136 \f
1137
1138 template<typename T>
1139 static T
1140 (JNICALL _Jv_JNI_GetField) (JNIEnv *env, jobject obj, jfieldID field)
1141 {
1142 obj = unwrap (obj);
1143 JvAssert (obj);
1144 T *ptr = (T *) ((char *) obj + field->getOffset ());
1145 return wrap_value (env, *ptr);
1146 }
1147
1148 template<typename T>
1149 static void
1150 (JNICALL _Jv_JNI_SetField) (JNIEnv *, jobject obj, jfieldID field, T value)
1151 {
1152 obj = unwrap (obj);
1153 value = unwrap (value);
1154
1155 JvAssert (obj);
1156 T *ptr = (T *) ((char *) obj + field->getOffset ());
1157 *ptr = value;
1158 }
1159
1160 template<jboolean is_static>
1161 static jfieldID
1162 (JNICALL _Jv_JNI_GetAnyFieldID) (JNIEnv *env, jclass clazz,
1163 const char *name, const char *sig)
1164 {
1165 try
1166 {
1167 clazz = unwrap (clazz);
1168
1169 _Jv_InitClass (clazz);
1170
1171 _Jv_Utf8Const *a_name = _Jv_makeUtf8Const ((char *) name, -1);
1172
1173 // FIXME: assume that SIG isn't too long.
1174 int len = strlen (sig);
1175 char s[len + 1];
1176 for (int i = 0; i <= len; ++i)
1177 s[i] = (sig[i] == '/') ? '.' : sig[i];
1178 jclass field_class = _Jv_FindClassFromSignature ((char *) s, NULL);
1179
1180 // FIXME: what if field_class == NULL?
1181
1182 java::lang::ClassLoader *loader = clazz->getClassLoaderInternal ();
1183 while (clazz != NULL)
1184 {
1185 // We acquire the class lock so that fields aren't resolved
1186 // while we are running.
1187 JvSynchronize sync (clazz);
1188
1189 jint count = (is_static
1190 ? JvNumStaticFields (clazz)
1191 : JvNumInstanceFields (clazz));
1192 jfieldID field = (is_static
1193 ? JvGetFirstStaticField (clazz)
1194 : JvGetFirstInstanceField (clazz));
1195 for (jint i = 0; i < count; ++i)
1196 {
1197 _Jv_Utf8Const *f_name = field->getNameUtf8Const(clazz);
1198
1199 // The field might be resolved or it might not be. It
1200 // is much simpler to always resolve it.
1201 _Jv_ResolveField (field, loader);
1202 if (_Jv_equalUtf8Consts (f_name, a_name)
1203 && field->getClass() == field_class)
1204 return field;
1205
1206 field = field->getNextField ();
1207 }
1208
1209 clazz = clazz->getSuperclass ();
1210 }
1211
1212 env->ex = new java::lang::NoSuchFieldError ();
1213 }
1214 catch (jthrowable t)
1215 {
1216 env->ex = t;
1217 }
1218 return NULL;
1219 }
1220
1221 template<typename T>
1222 static T
1223 (JNICALL _Jv_JNI_GetStaticField) (JNIEnv *env, jclass, jfieldID field)
1224 {
1225 T *ptr = (T *) field->u.addr;
1226 return wrap_value (env, *ptr);
1227 }
1228
1229 template<typename T>
1230 static void
1231 (JNICALL _Jv_JNI_SetStaticField) (JNIEnv *, jclass, jfieldID field, T value)
1232 {
1233 value = unwrap (value);
1234 T *ptr = (T *) field->u.addr;
1235 *ptr = value;
1236 }
1237
1238 static jstring
1239 (JNICALL _Jv_JNI_NewString) (JNIEnv *env, const jchar *unichars, jsize len)
1240 {
1241 try
1242 {
1243 jstring r = _Jv_NewString (unichars, len);
1244 return (jstring) wrap_value (env, r);
1245 }
1246 catch (jthrowable t)
1247 {
1248 env->ex = t;
1249 return NULL;
1250 }
1251 }
1252
1253 static jsize
1254 (JNICALL _Jv_JNI_GetStringLength) (JNIEnv *, jstring string)
1255 {
1256 return unwrap (string)->length();
1257 }
1258
1259 static const jchar *
1260 (JNICALL _Jv_JNI_GetStringChars) (JNIEnv *, jstring string, jboolean *isCopy)
1261 {
1262 string = unwrap (string);
1263 jchar *result = _Jv_GetStringChars (string);
1264 mark_for_gc (string, global_ref_table);
1265 if (isCopy)
1266 *isCopy = false;
1267 return (const jchar *) result;
1268 }
1269
1270 static void
1271 (JNICALL _Jv_JNI_ReleaseStringChars) (JNIEnv *, jstring string, const jchar *)
1272 {
1273 unmark_for_gc (unwrap (string), global_ref_table);
1274 }
1275
1276 static jstring
1277 (JNICALL _Jv_JNI_NewStringUTF) (JNIEnv *env, const char *bytes)
1278 {
1279 try
1280 {
1281 jstring result = JvNewStringUTF (bytes);
1282 return (jstring) wrap_value (env, result);
1283 }
1284 catch (jthrowable t)
1285 {
1286 env->ex = t;
1287 return NULL;
1288 }
1289 }
1290
1291 static jsize
1292 (JNICALL _Jv_JNI_GetStringUTFLength) (JNIEnv *, jstring string)
1293 {
1294 return JvGetStringUTFLength (unwrap (string));
1295 }
1296
1297 static const char *
1298 (JNICALL _Jv_JNI_GetStringUTFChars) (JNIEnv *env, jstring string,
1299 jboolean *isCopy)
1300 {
1301 try
1302 {
1303 string = unwrap (string);
1304 if (string == NULL)
1305 return NULL;
1306 jsize len = JvGetStringUTFLength (string);
1307 char *r = (char *) _Jv_Malloc (len + 1);
1308 JvGetStringUTFRegion (string, 0, string->length(), r);
1309 r[len] = '\0';
1310
1311 if (isCopy)
1312 *isCopy = true;
1313
1314 return (const char *) r;
1315 }
1316 catch (jthrowable t)
1317 {
1318 env->ex = t;
1319 return NULL;
1320 }
1321 }
1322
1323 static void
1324 (JNICALL _Jv_JNI_ReleaseStringUTFChars) (JNIEnv *, jstring, const char *utf)
1325 {
1326 _Jv_Free ((void *) utf);
1327 }
1328
1329 static void
1330 (JNICALL _Jv_JNI_GetStringRegion) (JNIEnv *env, jstring string, jsize start,
1331 jsize len, jchar *buf)
1332 {
1333 string = unwrap (string);
1334 jchar *result = _Jv_GetStringChars (string);
1335 if (start < 0 || start > string->length ()
1336 || len < 0 || start + len > string->length ())
1337 {
1338 try
1339 {
1340 env->ex = new java::lang::StringIndexOutOfBoundsException ();
1341 }
1342 catch (jthrowable t)
1343 {
1344 env->ex = t;
1345 }
1346 }
1347 else
1348 memcpy (buf, &result[start], len * sizeof (jchar));
1349 }
1350
1351 static void
1352 (JNICALL _Jv_JNI_GetStringUTFRegion) (JNIEnv *env, jstring str, jsize start,
1353 jsize len, char *buf)
1354 {
1355 str = unwrap (str);
1356
1357 if (start < 0 || start > str->length ()
1358 || len < 0 || start + len > str->length ())
1359 {
1360 try
1361 {
1362 env->ex = new java::lang::StringIndexOutOfBoundsException ();
1363 }
1364 catch (jthrowable t)
1365 {
1366 env->ex = t;
1367 }
1368 }
1369 else
1370 _Jv_GetStringUTFRegion (str, start, len, buf);
1371 }
1372
1373 static const jchar *
1374 (JNICALL _Jv_JNI_GetStringCritical) (JNIEnv *, jstring str, jboolean *isCopy)
1375 {
1376 jchar *result = _Jv_GetStringChars (unwrap (str));
1377 if (isCopy)
1378 *isCopy = false;
1379 return result;
1380 }
1381
1382 static void
1383 (JNICALL _Jv_JNI_ReleaseStringCritical) (JNIEnv *, jstring, const jchar *)
1384 {
1385 // Nothing.
1386 }
1387
1388 static jsize
1389 (JNICALL _Jv_JNI_GetArrayLength) (JNIEnv *, jarray array)
1390 {
1391 return unwrap (array)->length;
1392 }
1393
1394 static jarray
1395 (JNICALL _Jv_JNI_NewObjectArray) (JNIEnv *env, jsize length,
1396 jclass elementClass, jobject init)
1397 {
1398 try
1399 {
1400 elementClass = unwrap (elementClass);
1401 init = unwrap (init);
1402
1403 _Jv_CheckCast (elementClass, init);
1404 jarray result = JvNewObjectArray (length, elementClass, init);
1405 return (jarray) wrap_value (env, result);
1406 }
1407 catch (jthrowable t)
1408 {
1409 env->ex = t;
1410 return NULL;
1411 }
1412 }
1413
1414 static jobject
1415 (JNICALL _Jv_JNI_GetObjectArrayElement) (JNIEnv *env, jobjectArray array,
1416 jsize index)
1417 {
1418 if ((unsigned) index >= (unsigned) array->length)
1419 _Jv_ThrowBadArrayIndex (index);
1420 jobject *elts = elements (unwrap (array));
1421 return wrap_value (env, elts[index]);
1422 }
1423
1424 static void
1425 (JNICALL _Jv_JNI_SetObjectArrayElement) (JNIEnv *env, jobjectArray array,
1426 jsize index, jobject value)
1427 {
1428 try
1429 {
1430 array = unwrap (array);
1431 value = unwrap (value);
1432
1433 _Jv_CheckArrayStore (array, value);
1434 if ((unsigned) index >= (unsigned) array->length)
1435 _Jv_ThrowBadArrayIndex (index);
1436 jobject *elts = elements (array);
1437 elts[index] = value;
1438 }
1439 catch (jthrowable t)
1440 {
1441 env->ex = t;
1442 }
1443 }
1444
1445 template<typename T, jclass K>
1446 static JArray<T> *
1447 (JNICALL _Jv_JNI_NewPrimitiveArray) (JNIEnv *env, jsize length)
1448 {
1449 try
1450 {
1451 return (JArray<T> *) wrap_value (env, _Jv_NewPrimArray (K, length));
1452 }
1453 catch (jthrowable t)
1454 {
1455 env->ex = t;
1456 return NULL;
1457 }
1458 }
1459
1460 template<typename T, jclass K>
1461 static T *
1462 (JNICALL _Jv_JNI_GetPrimitiveArrayElements) (JNIEnv *env, JArray<T> *array,
1463 jboolean *isCopy)
1464 {
1465 array = unwrap (array);
1466 if (! _Jv_JNI_check_types (env, array, K))
1467 return NULL;
1468 T *elts = elements (array);
1469 if (isCopy)
1470 {
1471 // We elect never to copy.
1472 *isCopy = false;
1473 }
1474 mark_for_gc (array, global_ref_table);
1475 return elts;
1476 }
1477
1478 template<typename T, jclass K>
1479 static void
1480 (JNICALL _Jv_JNI_ReleasePrimitiveArrayElements) (JNIEnv *env, JArray<T> *array,
1481 T *, jint /* mode */)
1482 {
1483 array = unwrap (array);
1484 _Jv_JNI_check_types (env, array, K);
1485 // Note that we ignore MODE. We can do this because we never copy
1486 // the array elements. My reading of the JNI documentation is that
1487 // this is an option for the implementor.
1488 unmark_for_gc (array, global_ref_table);
1489 }
1490
1491 template<typename T, jclass K>
1492 static void
1493 (JNICALL _Jv_JNI_GetPrimitiveArrayRegion) (JNIEnv *env, JArray<T> *array,
1494 jsize start, jsize len,
1495 T *buf)
1496 {
1497 array = unwrap (array);
1498 if (! _Jv_JNI_check_types (env, array, K))
1499 return;
1500
1501 // The cast to unsigned lets us save a comparison.
1502 if (start < 0 || len < 0
1503 || (unsigned long) (start + len) > (unsigned long) array->length)
1504 {
1505 try
1506 {
1507 // FIXME: index.
1508 env->ex = new java::lang::ArrayIndexOutOfBoundsException ();
1509 }
1510 catch (jthrowable t)
1511 {
1512 // Could have thown out of memory error.
1513 env->ex = t;
1514 }
1515 }
1516 else
1517 {
1518 T *elts = elements (array) + start;
1519 memcpy (buf, elts, len * sizeof (T));
1520 }
1521 }
1522
1523 template<typename T, jclass K>
1524 static void
1525 (JNICALL _Jv_JNI_SetPrimitiveArrayRegion) (JNIEnv *env, JArray<T> *array,
1526 jsize start, jsize len, T *buf)
1527 {
1528 array = unwrap (array);
1529 if (! _Jv_JNI_check_types (env, array, K))
1530 return;
1531
1532 // The cast to unsigned lets us save a comparison.
1533 if (start < 0 || len < 0
1534 || (unsigned long) (start + len) > (unsigned long) array->length)
1535 {
1536 try
1537 {
1538 // FIXME: index.
1539 env->ex = new java::lang::ArrayIndexOutOfBoundsException ();
1540 }
1541 catch (jthrowable t)
1542 {
1543 env->ex = t;
1544 }
1545 }
1546 else
1547 {
1548 T *elts = elements (array) + start;
1549 memcpy (elts, buf, len * sizeof (T));
1550 }
1551 }
1552
1553 static void *
1554 (JNICALL _Jv_JNI_GetPrimitiveArrayCritical) (JNIEnv *, jarray array,
1555 jboolean *isCopy)
1556 {
1557 array = unwrap (array);
1558 // FIXME: does this work?
1559 jclass klass = array->getClass()->getComponentType();
1560 JvAssert (klass->isPrimitive ());
1561 char *r = _Jv_GetArrayElementFromElementType (array, klass);
1562 if (isCopy)
1563 *isCopy = false;
1564 return r;
1565 }
1566
1567 static void
1568 (JNICALL _Jv_JNI_ReleasePrimitiveArrayCritical) (JNIEnv *, jarray, void *, jint)
1569 {
1570 // Nothing.
1571 }
1572
1573 static jint
1574 (JNICALL _Jv_JNI_MonitorEnter) (JNIEnv *env, jobject obj)
1575 {
1576 try
1577 {
1578 _Jv_MonitorEnter (unwrap (obj));
1579 return 0;
1580 }
1581 catch (jthrowable t)
1582 {
1583 env->ex = t;
1584 }
1585 return JNI_ERR;
1586 }
1587
1588 static jint
1589 (JNICALL _Jv_JNI_MonitorExit) (JNIEnv *env, jobject obj)
1590 {
1591 try
1592 {
1593 _Jv_MonitorExit (unwrap (obj));
1594 return 0;
1595 }
1596 catch (jthrowable t)
1597 {
1598 env->ex = t;
1599 }
1600 return JNI_ERR;
1601 }
1602
1603 // JDK 1.2
1604 jobject
1605 (JNICALL _Jv_JNI_ToReflectedField) (JNIEnv *env, jclass cls, jfieldID fieldID,
1606 jboolean)
1607 {
1608 try
1609 {
1610 cls = unwrap (cls);
1611 java::lang::reflect::Field *field = new java::lang::reflect::Field();
1612 field->declaringClass = cls;
1613 field->offset = (char*) fieldID - (char *) cls->fields;
1614 field->name = _Jv_NewStringUtf8Const (fieldID->getNameUtf8Const (cls));
1615 return wrap_value (env, field);
1616 }
1617 catch (jthrowable t)
1618 {
1619 env->ex = t;
1620 }
1621 return NULL;
1622 }
1623
1624 // JDK 1.2
1625 static jfieldID
1626 (JNICALL _Jv_JNI_FromReflectedField) (JNIEnv *, jobject f)
1627 {
1628 using namespace java::lang::reflect;
1629
1630 f = unwrap (f);
1631 Field *field = reinterpret_cast<Field *> (f);
1632 return _Jv_FromReflectedField (field);
1633 }
1634
1635 jobject
1636 (JNICALL _Jv_JNI_ToReflectedMethod) (JNIEnv *env, jclass klass, jmethodID id,
1637 jboolean)
1638 {
1639 using namespace java::lang::reflect;
1640
1641 jobject result = NULL;
1642 klass = unwrap (klass);
1643
1644 try
1645 {
1646 if (_Jv_equalUtf8Consts (id->name, init_name))
1647 {
1648 // A constructor.
1649 Constructor *cons = new Constructor ();
1650 cons->offset = (char *) id - (char *) &klass->methods;
1651 cons->declaringClass = klass;
1652 result = cons;
1653 }
1654 else
1655 {
1656 Method *meth = new Method ();
1657 meth->offset = (char *) id - (char *) &klass->methods;
1658 meth->declaringClass = klass;
1659 result = meth;
1660 }
1661 }
1662 catch (jthrowable t)
1663 {
1664 env->ex = t;
1665 }
1666
1667 return wrap_value (env, result);
1668 }
1669
1670 static jmethodID
1671 (JNICALL _Jv_JNI_FromReflectedMethod) (JNIEnv *, jobject method)
1672 {
1673 using namespace java::lang::reflect;
1674 method = unwrap (method);
1675 if (Method::class$.isInstance (method))
1676 return _Jv_FromReflectedMethod (reinterpret_cast<Method *> (method));
1677 return
1678 _Jv_FromReflectedConstructor (reinterpret_cast<Constructor *> (method));
1679 }
1680
1681 // JDK 1.2.
1682 jweak
1683 (JNICALL _Jv_JNI_NewWeakGlobalRef) (JNIEnv *env, jobject obj)
1684 {
1685 using namespace gnu::gcj::runtime;
1686 JNIWeakRef *ref = NULL;
1687
1688 try
1689 {
1690 // This seems weird but I think it is correct.
1691 obj = unwrap (obj);
1692 ref = new JNIWeakRef (obj);
1693 mark_for_gc (ref, global_ref_table);
1694 }
1695 catch (jthrowable t)
1696 {
1697 env->ex = t;
1698 }
1699
1700 return reinterpret_cast<jweak> (ref);
1701 }
1702
1703 void
1704 (JNICALL _Jv_JNI_DeleteWeakGlobalRef) (JNIEnv *, jweak obj)
1705 {
1706 using namespace gnu::gcj::runtime;
1707 JNIWeakRef *ref = reinterpret_cast<JNIWeakRef *> (obj);
1708 unmark_for_gc (ref, global_ref_table);
1709 ref->clear ();
1710 }
1711
1712 \f
1713
1714 // Direct byte buffers.
1715
1716 static jobject
1717 (JNICALL _Jv_JNI_NewDirectByteBuffer) (JNIEnv *, void *address, jlong length)
1718 {
1719 using namespace gnu::gcj;
1720 using namespace java::nio;
1721 return new DirectByteBufferImpl (reinterpret_cast<RawData *> (address),
1722 length);
1723 }
1724
1725 static void *
1726 (JNICALL _Jv_JNI_GetDirectBufferAddress) (JNIEnv *, jobject buffer)
1727 {
1728 using namespace java::nio;
1729 DirectByteBufferImpl* bb = static_cast<DirectByteBufferImpl *> (buffer);
1730 return reinterpret_cast<void *> (bb->address);
1731 }
1732
1733 static jlong
1734 (JNICALL _Jv_JNI_GetDirectBufferCapacity) (JNIEnv *, jobject buffer)
1735 {
1736 using namespace java::nio;
1737 DirectByteBufferImpl* bb = static_cast<DirectByteBufferImpl *> (buffer);
1738 return bb->capacity();
1739 }
1740
1741 \f
1742
1743 // Hash table of native methods.
1744 static JNINativeMethod *nathash;
1745 // Number of slots used.
1746 static int nathash_count = 0;
1747 // Number of slots available. Must be power of 2.
1748 static int nathash_size = 0;
1749
1750 #define DELETED_ENTRY ((char *) (~0))
1751
1752 // Compute a hash value for a native method descriptor.
1753 static int
1754 hash (const JNINativeMethod *method)
1755 {
1756 char *ptr;
1757 int hash = 0;
1758
1759 ptr = method->name;
1760 while (*ptr)
1761 hash = (31 * hash) + *ptr++;
1762
1763 ptr = method->signature;
1764 while (*ptr)
1765 hash = (31 * hash) + *ptr++;
1766
1767 return hash;
1768 }
1769
1770 // Find the slot where a native method goes.
1771 static JNINativeMethod *
1772 nathash_find_slot (const JNINativeMethod *method)
1773 {
1774 jint h = hash (method);
1775 int step = (h ^ (h >> 16)) | 1;
1776 int w = h & (nathash_size - 1);
1777 int del = -1;
1778
1779 for (;;)
1780 {
1781 JNINativeMethod *slotp = &nathash[w];
1782 if (slotp->name == NULL)
1783 {
1784 if (del >= 0)
1785 return &nathash[del];
1786 else
1787 return slotp;
1788 }
1789 else if (slotp->name == DELETED_ENTRY)
1790 del = w;
1791 else if (! strcmp (slotp->name, method->name)
1792 && ! strcmp (slotp->signature, method->signature))
1793 return slotp;
1794 w = (w + step) & (nathash_size - 1);
1795 }
1796 }
1797
1798 // Find a method. Return NULL if it isn't in the hash table.
1799 static void *
1800 nathash_find (JNINativeMethod *method)
1801 {
1802 if (nathash == NULL)
1803 return NULL;
1804 JNINativeMethod *slot = nathash_find_slot (method);
1805 if (slot->name == NULL || slot->name == DELETED_ENTRY)
1806 return NULL;
1807 return slot->fnPtr;
1808 }
1809
1810 static void
1811 natrehash ()
1812 {
1813 if (nathash == NULL)
1814 {
1815 nathash_size = 1024;
1816 nathash =
1817 (JNINativeMethod *) _Jv_AllocBytes (nathash_size
1818 * sizeof (JNINativeMethod));
1819 memset (nathash, 0, nathash_size * sizeof (JNINativeMethod));
1820 }
1821 else
1822 {
1823 int savesize = nathash_size;
1824 JNINativeMethod *savehash = nathash;
1825 nathash_size *= 2;
1826 nathash =
1827 (JNINativeMethod *) _Jv_AllocBytes (nathash_size
1828 * sizeof (JNINativeMethod));
1829 memset (nathash, 0, nathash_size * sizeof (JNINativeMethod));
1830
1831 for (int i = 0; i < savesize; ++i)
1832 {
1833 if (savehash[i].name != NULL && savehash[i].name != DELETED_ENTRY)
1834 {
1835 JNINativeMethod *slot = nathash_find_slot (&savehash[i]);
1836 *slot = savehash[i];
1837 }
1838 }
1839 }
1840 }
1841
1842 static void
1843 nathash_add (const JNINativeMethod *method)
1844 {
1845 if (3 * nathash_count >= 2 * nathash_size)
1846 natrehash ();
1847 JNINativeMethod *slot = nathash_find_slot (method);
1848 // If the slot has a real entry in it, then there is no work to do.
1849 if (slot->name != NULL && slot->name != DELETED_ENTRY)
1850 return;
1851 // FIXME
1852 slot->name = strdup (method->name);
1853 slot->signature = strdup (method->signature);
1854 slot->fnPtr = method->fnPtr;
1855 }
1856
1857 static jint
1858 (JNICALL _Jv_JNI_RegisterNatives) (JNIEnv *env, jclass klass,
1859 const JNINativeMethod *methods,
1860 jint nMethods)
1861 {
1862 // Synchronize while we do the work. This must match
1863 // synchronization in some other functions that manipulate or use
1864 // the nathash table.
1865 JvSynchronize sync (global_ref_table);
1866
1867 // Look at each descriptor given us, and find the corresponding
1868 // method in the class.
1869 for (int j = 0; j < nMethods; ++j)
1870 {
1871 bool found = false;
1872
1873 _Jv_Method *imeths = JvGetFirstMethod (klass);
1874 for (int i = 0; i < JvNumMethods (klass); ++i)
1875 {
1876 _Jv_Method *self = &imeths[i];
1877
1878 if (! strcmp (self->name->data, methods[j].name)
1879 && ! strcmp (self->signature->data, methods[j].signature))
1880 {
1881 if (! (self->accflags
1882 & java::lang::reflect::Modifier::NATIVE))
1883 break;
1884
1885 // Found a match that is native.
1886 found = true;
1887 nathash_add (&methods[j]);
1888
1889 break;
1890 }
1891 }
1892
1893 if (! found)
1894 {
1895 jstring m = JvNewStringUTF (methods[j].name);
1896 try
1897 {
1898 env->ex =new java::lang::NoSuchMethodError (m);
1899 }
1900 catch (jthrowable t)
1901 {
1902 env->ex = t;
1903 }
1904 return JNI_ERR;
1905 }
1906 }
1907
1908 return JNI_OK;
1909 }
1910
1911 static jint
1912 (JNICALL _Jv_JNI_UnregisterNatives) (JNIEnv *, jclass)
1913 {
1914 // FIXME -- we could implement this.
1915 return JNI_ERR;
1916 }
1917
1918 \f
1919
1920 // Add a character to the buffer, encoding properly.
1921 static void
1922 add_char (char *buf, jchar c, int *here)
1923 {
1924 if (c == '_')
1925 {
1926 buf[(*here)++] = '_';
1927 buf[(*here)++] = '1';
1928 }
1929 else if (c == ';')
1930 {
1931 buf[(*here)++] = '_';
1932 buf[(*here)++] = '2';
1933 }
1934 else if (c == '[')
1935 {
1936 buf[(*here)++] = '_';
1937 buf[(*here)++] = '3';
1938 }
1939
1940 // Also check for `.' here because we might be passed an internal
1941 // qualified class name like `foo.bar'.
1942 else if (c == '/' || c == '.')
1943 buf[(*here)++] = '_';
1944 else if ((c >= '0' && c <= '9')
1945 || (c >= 'a' && c <= 'z')
1946 || (c >= 'A' && c <= 'Z'))
1947 buf[(*here)++] = (char) c;
1948 else
1949 {
1950 // "Unicode" character.
1951 buf[(*here)++] = '_';
1952 buf[(*here)++] = '0';
1953 for (int i = 0; i < 4; ++i)
1954 {
1955 int val = c & 0x0f;
1956 buf[(*here) + 3 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
1957 c >>= 4;
1958 }
1959 *here += 4;
1960 }
1961 }
1962
1963 // Compute a mangled name for a native function. This computes the
1964 // long name, and also returns an index which indicates where a NUL
1965 // can be placed to create the short name. This function assumes that
1966 // the buffer is large enough for its results.
1967 static void
1968 mangled_name (jclass klass, _Jv_Utf8Const *func_name,
1969 _Jv_Utf8Const *signature, char *buf, int *long_start)
1970 {
1971 strcpy (buf, "Java_");
1972 int here = 5;
1973
1974 // Add fully qualified class name.
1975 jchar *chars = _Jv_GetStringChars (klass->getName ());
1976 jint len = klass->getName ()->length ();
1977 for (int i = 0; i < len; ++i)
1978 add_char (buf, chars[i], &here);
1979
1980 // Don't use add_char because we need a literal `_'.
1981 buf[here++] = '_';
1982
1983 const unsigned char *fn = (const unsigned char *) func_name->data;
1984 const unsigned char *limit = fn + func_name->length;
1985 for (int i = 0; ; ++i)
1986 {
1987 int ch = UTF8_GET (fn, limit);
1988 if (ch < 0)
1989 break;
1990 add_char (buf, ch, &here);
1991 }
1992
1993 // This is where the long signature begins.
1994 *long_start = here;
1995 buf[here++] = '_';
1996 buf[here++] = '_';
1997
1998 const unsigned char *sig = (const unsigned char *) signature->data;
1999 limit = sig + signature->length;
2000 JvAssert (sig[0] == '(');
2001 ++sig;
2002 while (1)
2003 {
2004 int ch = UTF8_GET (sig, limit);
2005 if (ch == ')' || ch < 0)
2006 break;
2007 add_char (buf, ch, &here);
2008 }
2009
2010 buf[here] = '\0';
2011 }
2012
2013 // Return the current thread's JNIEnv; if one does not exist, create
2014 // it. Also create a new system frame for use. This is `extern "C"'
2015 // because the compiler calls it.
2016 extern "C" JNIEnv *
2017 _Jv_GetJNIEnvNewFrame (jclass klass)
2018 {
2019 JNIEnv *env = _Jv_GetCurrentJNIEnv ();
2020 if (env == NULL)
2021 {
2022 env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
2023 env->p = &_Jv_JNIFunctions;
2024 env->klass = klass;
2025 env->locals = NULL;
2026 // We set env->ex below.
2027
2028 _Jv_SetCurrentJNIEnv (env);
2029 }
2030
2031 _Jv_JNI_LocalFrame *frame
2032 = (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
2033 + (FRAME_SIZE
2034 * sizeof (jobject)));
2035
2036 frame->marker = MARK_SYSTEM;
2037 frame->size = FRAME_SIZE;
2038 frame->next = env->locals;
2039
2040 for (int i = 0; i < frame->size; ++i)
2041 frame->vec[i] = NULL;
2042
2043 env->locals = frame;
2044 env->ex = NULL;
2045
2046 return env;
2047 }
2048
2049 // Return the function which implements a particular JNI method. If
2050 // we can't find the function, we throw the appropriate exception.
2051 // This is `extern "C"' because the compiler uses it.
2052 extern "C" void *
2053 _Jv_LookupJNIMethod (jclass klass, _Jv_Utf8Const *name,
2054 _Jv_Utf8Const *signature, int args_size)
2055 {
2056 char buf[10 + 6 * (name->length + signature->length) + 12];
2057 int long_start;
2058 void *function;
2059
2060 // Synchronize on something convenient. Right now we use the hash.
2061 JvSynchronize sync (global_ref_table);
2062
2063 // First see if we have an override in the hash table.
2064 strncpy (buf, name->data, name->length);
2065 buf[name->length] = '\0';
2066 strncpy (buf + name->length + 1, signature->data, signature->length);
2067 buf[name->length + signature->length + 1] = '\0';
2068 JNINativeMethod meth;
2069 meth.name = buf;
2070 meth.signature = buf + name->length + 1;
2071 function = nathash_find (&meth);
2072 if (function != NULL)
2073 return function;
2074
2075 // If there was no override, then look in the symbol table.
2076 buf[0] = '_';
2077 mangled_name (klass, name, signature, buf + 1, &long_start);
2078 char c = buf[long_start + 1];
2079 buf[long_start + 1] = '\0';
2080
2081 function = _Jv_FindSymbolInExecutable (buf + 1);
2082 #ifdef WIN32
2083 // On Win32, we use the "stdcall" calling convention (see JNICALL
2084 // in jni.h).
2085 //
2086 // For a function named 'fooBar' that takes 'nn' bytes as arguments,
2087 // by default, MinGW GCC exports it as 'fooBar@nn', MSVC exports it
2088 // as '_fooBar@nn' and Borland C exports it as 'fooBar'. We try to
2089 // take care of all these variations here.
2090
2091 char asz_buf[12]; /* '@' + '2147483647' (32-bit INT_MAX) + '\0' */
2092 char long_nm_sv[11]; /* Ditto, except for the '\0'. */
2093
2094 if (function == NULL)
2095 {
2096 // We have tried searching for the 'fooBar' form (BCC) - now
2097 // try the others.
2098
2099 // First, save the part of the long name that will be damaged
2100 // by appending '@nn'.
2101 memcpy (long_nm_sv, (buf + long_start + 1 + 1), sizeof (long_nm_sv));
2102
2103 sprintf (asz_buf, "@%d", args_size);
2104 strcat (buf, asz_buf);
2105
2106 // Search for the '_fooBar@nn' form (MSVC).
2107 function = _Jv_FindSymbolInExecutable (buf);
2108
2109 if (function == NULL)
2110 {
2111 // Search for the 'fooBar@nn' form (MinGW GCC).
2112 function = _Jv_FindSymbolInExecutable (buf + 1);
2113 }
2114 }
2115 #endif /* WIN32 */
2116
2117 if (function == NULL)
2118 {
2119 buf[long_start + 1] = c;
2120 #ifdef WIN32
2121 // Restore the part of the long name that was damaged by
2122 // appending the '@nn'.
2123 memcpy ((buf + long_start + 1 + 1), long_nm_sv, sizeof (long_nm_sv));
2124 #endif /* WIN32 */
2125 function = _Jv_FindSymbolInExecutable (buf + 1);
2126 if (function == NULL)
2127 {
2128 #ifdef WIN32
2129 strcat (buf, asz_buf);
2130 function = _Jv_FindSymbolInExecutable (buf);
2131 if (function == NULL)
2132 function = _Jv_FindSymbolInExecutable (buf + 1);
2133
2134 if (function == NULL)
2135 #endif /* WIN32 */
2136 {
2137 jstring str = JvNewStringUTF (name->data);
2138 throw new java::lang::UnsatisfiedLinkError (str);
2139 }
2140 }
2141 }
2142
2143 return function;
2144 }
2145
2146 #ifdef INTERPRETER
2147
2148 // This function is the stub which is used to turn an ordinary (CNI)
2149 // method call into a JNI call.
2150 void
2151 _Jv_JNIMethod::call (ffi_cif *, void *ret, ffi_raw *args, void *__this)
2152 {
2153 _Jv_JNIMethod* _this = (_Jv_JNIMethod *) __this;
2154
2155 JNIEnv *env = _Jv_GetJNIEnvNewFrame (_this->defining_class);
2156
2157 // FIXME: we should mark every reference parameter as a local. For
2158 // now we assume a conservative GC, and we assume that the
2159 // references are on the stack somewhere.
2160
2161 // We cache the value that we find, of course, but if we don't find
2162 // a value we don't cache that fact -- we might subsequently load a
2163 // library which finds the function in question.
2164 {
2165 // Synchronize on a convenient object to ensure sanity in case two
2166 // threads reach this point for the same function at the same
2167 // time.
2168 JvSynchronize sync (global_ref_table);
2169 if (_this->function == NULL)
2170 {
2171 int args_size = sizeof (JNIEnv *) + _this->args_raw_size;
2172
2173 if (_this->self->accflags & java::lang::reflect::Modifier::STATIC)
2174 args_size += sizeof (_this->defining_class);
2175
2176 _this->function = _Jv_LookupJNIMethod (_this->defining_class,
2177 _this->self->name,
2178 _this->self->signature,
2179 args_size);
2180 }
2181 }
2182
2183 JvAssert (_this->args_raw_size % sizeof (ffi_raw) == 0);
2184 ffi_raw real_args[2 + _this->args_raw_size / sizeof (ffi_raw)];
2185 int offset = 0;
2186
2187 // First argument is always the environment pointer.
2188 real_args[offset++].ptr = env;
2189
2190 // For a static method, we pass in the Class. For non-static
2191 // methods, the `this' argument is already handled.
2192 if ((_this->self->accflags & java::lang::reflect::Modifier::STATIC))
2193 real_args[offset++].ptr = _this->defining_class;
2194
2195 // In libgcj, the callee synchronizes.
2196 jobject sync = NULL;
2197 if ((_this->self->accflags & java::lang::reflect::Modifier::SYNCHRONIZED))
2198 {
2199 if ((_this->self->accflags & java::lang::reflect::Modifier::STATIC))
2200 sync = _this->defining_class;
2201 else
2202 sync = (jobject) args[0].ptr;
2203 _Jv_MonitorEnter (sync);
2204 }
2205
2206 // Copy over passed-in arguments.
2207 memcpy (&real_args[offset], args, _this->args_raw_size);
2208
2209 // The actual call to the JNI function.
2210 ffi_raw_call (&_this->jni_cif, (void (*)()) _this->function,
2211 ret, real_args);
2212
2213 if (sync != NULL)
2214 _Jv_MonitorExit (sync);
2215
2216 _Jv_JNI_PopSystemFrame (env);
2217 }
2218
2219 #endif /* INTERPRETER */
2220
2221 \f
2222
2223 //
2224 // Invocation API.
2225 //
2226
2227 // An internal helper function.
2228 static jint
2229 _Jv_JNI_AttachCurrentThread (JavaVM *, jstring name, void **penv,
2230 void *args, jboolean is_daemon)
2231 {
2232 JavaVMAttachArgs *attach = reinterpret_cast<JavaVMAttachArgs *> (args);
2233 java::lang::ThreadGroup *group = NULL;
2234
2235 if (attach)
2236 {
2237 // FIXME: do we really want to support 1.1?
2238 if (attach->version != JNI_VERSION_1_4
2239 && attach->version != JNI_VERSION_1_2
2240 && attach->version != JNI_VERSION_1_1)
2241 return JNI_EVERSION;
2242
2243 JvAssert (java::lang::ThreadGroup::class$.isInstance (attach->group));
2244 group = reinterpret_cast<java::lang::ThreadGroup *> (attach->group);
2245 }
2246
2247 // Attaching an already-attached thread is a no-op.
2248 if (_Jv_GetCurrentJNIEnv () != NULL)
2249 return 0;
2250
2251 JNIEnv *env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
2252 if (env == NULL)
2253 return JNI_ERR;
2254 env->p = &_Jv_JNIFunctions;
2255 env->ex = NULL;
2256 env->klass = NULL;
2257 env->locals
2258 = (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
2259 + (FRAME_SIZE
2260 * sizeof (jobject)));
2261 if (env->locals == NULL)
2262 {
2263 _Jv_Free (env);
2264 return JNI_ERR;
2265 }
2266
2267 env->locals->marker = MARK_SYSTEM;
2268 env->locals->size = FRAME_SIZE;
2269 env->locals->next = NULL;
2270
2271 for (int i = 0; i < env->locals->size; ++i)
2272 env->locals->vec[i] = NULL;
2273
2274 *penv = reinterpret_cast<void *> (env);
2275
2276 // This thread might already be a Java thread -- this function might
2277 // have been called simply to set the new JNIEnv.
2278 if (_Jv_ThreadCurrent () == NULL)
2279 {
2280 try
2281 {
2282 if (is_daemon)
2283 _Jv_AttachCurrentThreadAsDaemon (name, group);
2284 else
2285 _Jv_AttachCurrentThread (name, group);
2286 }
2287 catch (jthrowable t)
2288 {
2289 return JNI_ERR;
2290 }
2291 }
2292 _Jv_SetCurrentJNIEnv (env);
2293
2294 return 0;
2295 }
2296
2297 // This is the one actually used by JNI.
2298 static jint
2299 (JNICALL _Jv_JNI_AttachCurrentThread) (JavaVM *vm, void **penv, void *args)
2300 {
2301 return _Jv_JNI_AttachCurrentThread (vm, NULL, penv, args, false);
2302 }
2303
2304 static jint
2305 (JNICALL _Jv_JNI_AttachCurrentThreadAsDaemon) (JavaVM *vm, void **penv,
2306 void *args)
2307 {
2308 return _Jv_JNI_AttachCurrentThread (vm, NULL, penv, args, true);
2309 }
2310
2311 static jint
2312 (JNICALL _Jv_JNI_DestroyJavaVM) (JavaVM *vm)
2313 {
2314 JvAssert (the_vm && vm == the_vm);
2315
2316 JNIEnv *env;
2317 if (_Jv_ThreadCurrent () != NULL)
2318 {
2319 jstring main_name;
2320 // This sucks.
2321 try
2322 {
2323 main_name = JvNewStringLatin1 ("main");
2324 }
2325 catch (jthrowable t)
2326 {
2327 return JNI_ERR;
2328 }
2329
2330 jint r = _Jv_JNI_AttachCurrentThread (vm, main_name,
2331 reinterpret_cast<void **> (&env),
2332 NULL, false);
2333 if (r < 0)
2334 return r;
2335 }
2336 else
2337 env = _Jv_GetCurrentJNIEnv ();
2338
2339 _Jv_ThreadWait ();
2340
2341 // Docs say that this always returns an error code.
2342 return JNI_ERR;
2343 }
2344
2345 jint
2346 (JNICALL _Jv_JNI_DetachCurrentThread) (JavaVM *)
2347 {
2348 jint code = _Jv_DetachCurrentThread ();
2349 return code ? JNI_EDETACHED : 0;
2350 }
2351
2352 static jint
2353 (JNICALL _Jv_JNI_GetEnv) (JavaVM *, void **penv, jint version)
2354 {
2355 if (_Jv_ThreadCurrent () == NULL)
2356 {
2357 *penv = NULL;
2358 return JNI_EDETACHED;
2359 }
2360
2361 #ifdef ENABLE_JVMPI
2362 // Handle JVMPI requests.
2363 if (version == JVMPI_VERSION_1)
2364 {
2365 *penv = (void *) &_Jv_JVMPI_Interface;
2366 return 0;
2367 }
2368 #endif
2369
2370 // FIXME: do we really want to support 1.1?
2371 if (version != JNI_VERSION_1_4 && version != JNI_VERSION_1_2
2372 && version != JNI_VERSION_1_1)
2373 {
2374 *penv = NULL;
2375 return JNI_EVERSION;
2376 }
2377
2378 *penv = (void *) _Jv_GetCurrentJNIEnv ();
2379 return 0;
2380 }
2381
2382 jint JNICALL
2383 JNI_GetDefaultJavaVMInitArgs (void *args)
2384 {
2385 jint version = * (jint *) args;
2386 // Here we only support 1.2 and 1.4.
2387 if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4)
2388 return JNI_EVERSION;
2389
2390 JavaVMInitArgs *ia = reinterpret_cast<JavaVMInitArgs *> (args);
2391 ia->version = JNI_VERSION_1_4;
2392 ia->nOptions = 0;
2393 ia->options = NULL;
2394 ia->ignoreUnrecognized = true;
2395
2396 return 0;
2397 }
2398
2399 jint JNICALL
2400 JNI_CreateJavaVM (JavaVM **vm, void **penv, void *args)
2401 {
2402 JvAssert (! the_vm);
2403
2404 _Jv_CreateJavaVM (NULL);
2405
2406 // FIXME: synchronize
2407 JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
2408 if (nvm == NULL)
2409 return JNI_ERR;
2410 nvm->functions = &_Jv_JNI_InvokeFunctions;
2411
2412 // Parse the arguments.
2413 if (args != NULL)
2414 {
2415 jint version = * (jint *) args;
2416 // We only support 1.2 and 1.4.
2417 if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4)
2418 return JNI_EVERSION;
2419 JavaVMInitArgs *ia = reinterpret_cast<JavaVMInitArgs *> (args);
2420 for (int i = 0; i < ia->nOptions; ++i)
2421 {
2422 if (! strcmp (ia->options[i].optionString, "vfprintf")
2423 || ! strcmp (ia->options[i].optionString, "exit")
2424 || ! strcmp (ia->options[i].optionString, "abort"))
2425 {
2426 // We are required to recognize these, but for now we
2427 // don't handle them in any way. FIXME.
2428 continue;
2429 }
2430 else if (! strncmp (ia->options[i].optionString,
2431 "-verbose", sizeof ("-verbose") - 1))
2432 {
2433 // We don't do anything with this option either. We
2434 // might want to make sure the argument is valid, but we
2435 // don't really care all that much for now.
2436 continue;
2437 }
2438 else if (! strncmp (ia->options[i].optionString, "-D", 2))
2439 {
2440 // FIXME.
2441 continue;
2442 }
2443 else if (ia->ignoreUnrecognized)
2444 {
2445 if (ia->options[i].optionString[0] == '_'
2446 || ! strncmp (ia->options[i].optionString, "-X", 2))
2447 continue;
2448 }
2449
2450 return JNI_ERR;
2451 }
2452 }
2453
2454 jint r =_Jv_JNI_AttachCurrentThread (nvm, penv, NULL);
2455 if (r < 0)
2456 return r;
2457
2458 the_vm = nvm;
2459 *vm = the_vm;
2460
2461 return 0;
2462 }
2463
2464 jint JNICALL
2465 JNI_GetCreatedJavaVMs (JavaVM **vm_buffer, jsize buf_len, jsize *n_vms)
2466 {
2467 if (buf_len <= 0)
2468 return JNI_ERR;
2469
2470 // We only support a single VM.
2471 if (the_vm != NULL)
2472 {
2473 vm_buffer[0] = the_vm;
2474 *n_vms = 1;
2475 }
2476 else
2477 *n_vms = 0;
2478 return 0;
2479 }
2480
2481 JavaVM *
2482 _Jv_GetJavaVM ()
2483 {
2484 // FIXME: synchronize
2485 if (! the_vm)
2486 {
2487 JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
2488 if (nvm != NULL)
2489 nvm->functions = &_Jv_JNI_InvokeFunctions;
2490 the_vm = nvm;
2491 }
2492
2493 // If this is a Java thread, we want to make sure it has an
2494 // associated JNIEnv.
2495 if (_Jv_ThreadCurrent () != NULL)
2496 {
2497 void *ignore;
2498 _Jv_JNI_AttachCurrentThread (the_vm, &ignore, NULL);
2499 }
2500
2501 return the_vm;
2502 }
2503
2504 static jint
2505 (JNICALL _Jv_JNI_GetJavaVM) (JNIEnv *, JavaVM **vm)
2506 {
2507 *vm = _Jv_GetJavaVM ();
2508 return *vm == NULL ? JNI_ERR : JNI_OK;
2509 }
2510
2511 \f
2512
2513 #define RESERVED NULL
2514
2515 struct JNINativeInterface _Jv_JNIFunctions =
2516 {
2517 RESERVED,
2518 RESERVED,
2519 RESERVED,
2520 RESERVED,
2521 _Jv_JNI_GetVersion, // GetVersion
2522 _Jv_JNI_DefineClass, // DefineClass
2523 _Jv_JNI_FindClass, // FindClass
2524 _Jv_JNI_FromReflectedMethod, // FromReflectedMethod
2525 _Jv_JNI_FromReflectedField, // FromReflectedField
2526 _Jv_JNI_ToReflectedMethod, // ToReflectedMethod
2527 _Jv_JNI_GetSuperclass, // GetSuperclass
2528 _Jv_JNI_IsAssignableFrom, // IsAssignableFrom
2529 _Jv_JNI_ToReflectedField, // ToReflectedField
2530 _Jv_JNI_Throw, // Throw
2531 _Jv_JNI_ThrowNew, // ThrowNew
2532 _Jv_JNI_ExceptionOccurred, // ExceptionOccurred
2533 _Jv_JNI_ExceptionDescribe, // ExceptionDescribe
2534 _Jv_JNI_ExceptionClear, // ExceptionClear
2535 _Jv_JNI_FatalError, // FatalError
2536
2537 _Jv_JNI_PushLocalFrame, // PushLocalFrame
2538 _Jv_JNI_PopLocalFrame, // PopLocalFrame
2539 _Jv_JNI_NewGlobalRef, // NewGlobalRef
2540 _Jv_JNI_DeleteGlobalRef, // DeleteGlobalRef
2541 _Jv_JNI_DeleteLocalRef, // DeleteLocalRef
2542
2543 _Jv_JNI_IsSameObject, // IsSameObject
2544
2545 _Jv_JNI_NewLocalRef, // NewLocalRef
2546 _Jv_JNI_EnsureLocalCapacity, // EnsureLocalCapacity
2547
2548 _Jv_JNI_AllocObject, // AllocObject
2549 _Jv_JNI_NewObject, // NewObject
2550 _Jv_JNI_NewObjectV, // NewObjectV
2551 _Jv_JNI_NewObjectA, // NewObjectA
2552 _Jv_JNI_GetObjectClass, // GetObjectClass
2553 _Jv_JNI_IsInstanceOf, // IsInstanceOf
2554 _Jv_JNI_GetAnyMethodID<false>, // GetMethodID
2555
2556 _Jv_JNI_CallMethod<jobject>, // CallObjectMethod
2557 _Jv_JNI_CallMethodV<jobject>, // CallObjectMethodV
2558 _Jv_JNI_CallMethodA<jobject>, // CallObjectMethodA
2559 _Jv_JNI_CallMethod<jboolean>, // CallBooleanMethod
2560 _Jv_JNI_CallMethodV<jboolean>, // CallBooleanMethodV
2561 _Jv_JNI_CallMethodA<jboolean>, // CallBooleanMethodA
2562 _Jv_JNI_CallMethod<jbyte>, // CallByteMethod
2563 _Jv_JNI_CallMethodV<jbyte>, // CallByteMethodV
2564 _Jv_JNI_CallMethodA<jbyte>, // CallByteMethodA
2565 _Jv_JNI_CallMethod<jchar>, // CallCharMethod
2566 _Jv_JNI_CallMethodV<jchar>, // CallCharMethodV
2567 _Jv_JNI_CallMethodA<jchar>, // CallCharMethodA
2568 _Jv_JNI_CallMethod<jshort>, // CallShortMethod
2569 _Jv_JNI_CallMethodV<jshort>, // CallShortMethodV
2570 _Jv_JNI_CallMethodA<jshort>, // CallShortMethodA
2571 _Jv_JNI_CallMethod<jint>, // CallIntMethod
2572 _Jv_JNI_CallMethodV<jint>, // CallIntMethodV
2573 _Jv_JNI_CallMethodA<jint>, // CallIntMethodA
2574 _Jv_JNI_CallMethod<jlong>, // CallLongMethod
2575 _Jv_JNI_CallMethodV<jlong>, // CallLongMethodV
2576 _Jv_JNI_CallMethodA<jlong>, // CallLongMethodA
2577 _Jv_JNI_CallMethod<jfloat>, // CallFloatMethod
2578 _Jv_JNI_CallMethodV<jfloat>, // CallFloatMethodV
2579 _Jv_JNI_CallMethodA<jfloat>, // CallFloatMethodA
2580 _Jv_JNI_CallMethod<jdouble>, // CallDoubleMethod
2581 _Jv_JNI_CallMethodV<jdouble>, // CallDoubleMethodV
2582 _Jv_JNI_CallMethodA<jdouble>, // CallDoubleMethodA
2583 _Jv_JNI_CallVoidMethod, // CallVoidMethod
2584 _Jv_JNI_CallVoidMethodV, // CallVoidMethodV
2585 _Jv_JNI_CallVoidMethodA, // CallVoidMethodA
2586
2587 // Nonvirtual method invocation functions follow.
2588 _Jv_JNI_CallAnyMethod<jobject, nonvirtual>, // CallNonvirtualObjectMethod
2589 _Jv_JNI_CallAnyMethodV<jobject, nonvirtual>, // CallNonvirtualObjectMethodV
2590 _Jv_JNI_CallAnyMethodA<jobject, nonvirtual>, // CallNonvirtualObjectMethodA
2591 _Jv_JNI_CallAnyMethod<jboolean, nonvirtual>, // CallNonvirtualBooleanMethod
2592 _Jv_JNI_CallAnyMethodV<jboolean, nonvirtual>, // CallNonvirtualBooleanMethodV
2593 _Jv_JNI_CallAnyMethodA<jboolean, nonvirtual>, // CallNonvirtualBooleanMethodA
2594 _Jv_JNI_CallAnyMethod<jbyte, nonvirtual>, // CallNonvirtualByteMethod
2595 _Jv_JNI_CallAnyMethodV<jbyte, nonvirtual>, // CallNonvirtualByteMethodV
2596 _Jv_JNI_CallAnyMethodA<jbyte, nonvirtual>, // CallNonvirtualByteMethodA
2597 _Jv_JNI_CallAnyMethod<jchar, nonvirtual>, // CallNonvirtualCharMethod
2598 _Jv_JNI_CallAnyMethodV<jchar, nonvirtual>, // CallNonvirtualCharMethodV
2599 _Jv_JNI_CallAnyMethodA<jchar, nonvirtual>, // CallNonvirtualCharMethodA
2600 _Jv_JNI_CallAnyMethod<jshort, nonvirtual>, // CallNonvirtualShortMethod
2601 _Jv_JNI_CallAnyMethodV<jshort, nonvirtual>, // CallNonvirtualShortMethodV
2602 _Jv_JNI_CallAnyMethodA<jshort, nonvirtual>, // CallNonvirtualShortMethodA
2603 _Jv_JNI_CallAnyMethod<jint, nonvirtual>, // CallNonvirtualIntMethod
2604 _Jv_JNI_CallAnyMethodV<jint, nonvirtual>, // CallNonvirtualIntMethodV
2605 _Jv_JNI_CallAnyMethodA<jint, nonvirtual>, // CallNonvirtualIntMethodA
2606 _Jv_JNI_CallAnyMethod<jlong, nonvirtual>, // CallNonvirtualLongMethod
2607 _Jv_JNI_CallAnyMethodV<jlong, nonvirtual>, // CallNonvirtualLongMethodV
2608 _Jv_JNI_CallAnyMethodA<jlong, nonvirtual>, // CallNonvirtualLongMethodA
2609 _Jv_JNI_CallAnyMethod<jfloat, nonvirtual>, // CallNonvirtualFloatMethod
2610 _Jv_JNI_CallAnyMethodV<jfloat, nonvirtual>, // CallNonvirtualFloatMethodV
2611 _Jv_JNI_CallAnyMethodA<jfloat, nonvirtual>, // CallNonvirtualFloatMethodA
2612 _Jv_JNI_CallAnyMethod<jdouble, nonvirtual>, // CallNonvirtualDoubleMethod
2613 _Jv_JNI_CallAnyMethodV<jdouble, nonvirtual>, // CallNonvirtualDoubleMethodV
2614 _Jv_JNI_CallAnyMethodA<jdouble, nonvirtual>, // CallNonvirtualDoubleMethodA
2615 _Jv_JNI_CallAnyVoidMethod<nonvirtual>, // CallNonvirtualVoidMethod
2616 _Jv_JNI_CallAnyVoidMethodV<nonvirtual>, // CallNonvirtualVoidMethodV
2617 _Jv_JNI_CallAnyVoidMethodA<nonvirtual>, // CallNonvirtualVoidMethodA
2618
2619 _Jv_JNI_GetAnyFieldID<false>, // GetFieldID
2620 _Jv_JNI_GetField<jobject>, // GetObjectField
2621 _Jv_JNI_GetField<jboolean>, // GetBooleanField
2622 _Jv_JNI_GetField<jbyte>, // GetByteField
2623 _Jv_JNI_GetField<jchar>, // GetCharField
2624 _Jv_JNI_GetField<jshort>, // GetShortField
2625 _Jv_JNI_GetField<jint>, // GetIntField
2626 _Jv_JNI_GetField<jlong>, // GetLongField
2627 _Jv_JNI_GetField<jfloat>, // GetFloatField
2628 _Jv_JNI_GetField<jdouble>, // GetDoubleField
2629 _Jv_JNI_SetField, // SetObjectField
2630 _Jv_JNI_SetField, // SetBooleanField
2631 _Jv_JNI_SetField, // SetByteField
2632 _Jv_JNI_SetField, // SetCharField
2633 _Jv_JNI_SetField, // SetShortField
2634 _Jv_JNI_SetField, // SetIntField
2635 _Jv_JNI_SetField, // SetLongField
2636 _Jv_JNI_SetField, // SetFloatField
2637 _Jv_JNI_SetField, // SetDoubleField
2638 _Jv_JNI_GetAnyMethodID<true>, // GetStaticMethodID
2639
2640 _Jv_JNI_CallStaticMethod<jobject>, // CallStaticObjectMethod
2641 _Jv_JNI_CallStaticMethodV<jobject>, // CallStaticObjectMethodV
2642 _Jv_JNI_CallStaticMethodA<jobject>, // CallStaticObjectMethodA
2643 _Jv_JNI_CallStaticMethod<jboolean>, // CallStaticBooleanMethod
2644 _Jv_JNI_CallStaticMethodV<jboolean>, // CallStaticBooleanMethodV
2645 _Jv_JNI_CallStaticMethodA<jboolean>, // CallStaticBooleanMethodA
2646 _Jv_JNI_CallStaticMethod<jbyte>, // CallStaticByteMethod
2647 _Jv_JNI_CallStaticMethodV<jbyte>, // CallStaticByteMethodV
2648 _Jv_JNI_CallStaticMethodA<jbyte>, // CallStaticByteMethodA
2649 _Jv_JNI_CallStaticMethod<jchar>, // CallStaticCharMethod
2650 _Jv_JNI_CallStaticMethodV<jchar>, // CallStaticCharMethodV
2651 _Jv_JNI_CallStaticMethodA<jchar>, // CallStaticCharMethodA
2652 _Jv_JNI_CallStaticMethod<jshort>, // CallStaticShortMethod
2653 _Jv_JNI_CallStaticMethodV<jshort>, // CallStaticShortMethodV
2654 _Jv_JNI_CallStaticMethodA<jshort>, // CallStaticShortMethodA
2655 _Jv_JNI_CallStaticMethod<jint>, // CallStaticIntMethod
2656 _Jv_JNI_CallStaticMethodV<jint>, // CallStaticIntMethodV
2657 _Jv_JNI_CallStaticMethodA<jint>, // CallStaticIntMethodA
2658 _Jv_JNI_CallStaticMethod<jlong>, // CallStaticLongMethod
2659 _Jv_JNI_CallStaticMethodV<jlong>, // CallStaticLongMethodV
2660 _Jv_JNI_CallStaticMethodA<jlong>, // CallStaticLongMethodA
2661 _Jv_JNI_CallStaticMethod<jfloat>, // CallStaticFloatMethod
2662 _Jv_JNI_CallStaticMethodV<jfloat>, // CallStaticFloatMethodV
2663 _Jv_JNI_CallStaticMethodA<jfloat>, // CallStaticFloatMethodA
2664 _Jv_JNI_CallStaticMethod<jdouble>, // CallStaticDoubleMethod
2665 _Jv_JNI_CallStaticMethodV<jdouble>, // CallStaticDoubleMethodV
2666 _Jv_JNI_CallStaticMethodA<jdouble>, // CallStaticDoubleMethodA
2667 _Jv_JNI_CallStaticVoidMethod, // CallStaticVoidMethod
2668 _Jv_JNI_CallStaticVoidMethodV, // CallStaticVoidMethodV
2669 _Jv_JNI_CallStaticVoidMethodA, // CallStaticVoidMethodA
2670
2671 _Jv_JNI_GetAnyFieldID<true>, // GetStaticFieldID
2672 _Jv_JNI_GetStaticField<jobject>, // GetStaticObjectField
2673 _Jv_JNI_GetStaticField<jboolean>, // GetStaticBooleanField
2674 _Jv_JNI_GetStaticField<jbyte>, // GetStaticByteField
2675 _Jv_JNI_GetStaticField<jchar>, // GetStaticCharField
2676 _Jv_JNI_GetStaticField<jshort>, // GetStaticShortField
2677 _Jv_JNI_GetStaticField<jint>, // GetStaticIntField
2678 _Jv_JNI_GetStaticField<jlong>, // GetStaticLongField
2679 _Jv_JNI_GetStaticField<jfloat>, // GetStaticFloatField
2680 _Jv_JNI_GetStaticField<jdouble>, // GetStaticDoubleField
2681 _Jv_JNI_SetStaticField, // SetStaticObjectField
2682 _Jv_JNI_SetStaticField, // SetStaticBooleanField
2683 _Jv_JNI_SetStaticField, // SetStaticByteField
2684 _Jv_JNI_SetStaticField, // SetStaticCharField
2685 _Jv_JNI_SetStaticField, // SetStaticShortField
2686 _Jv_JNI_SetStaticField, // SetStaticIntField
2687 _Jv_JNI_SetStaticField, // SetStaticLongField
2688 _Jv_JNI_SetStaticField, // SetStaticFloatField
2689 _Jv_JNI_SetStaticField, // SetStaticDoubleField
2690 _Jv_JNI_NewString, // NewString
2691 _Jv_JNI_GetStringLength, // GetStringLength
2692 _Jv_JNI_GetStringChars, // GetStringChars
2693 _Jv_JNI_ReleaseStringChars, // ReleaseStringChars
2694 _Jv_JNI_NewStringUTF, // NewStringUTF
2695 _Jv_JNI_GetStringUTFLength, // GetStringUTFLength
2696 _Jv_JNI_GetStringUTFChars, // GetStringUTFChars
2697 _Jv_JNI_ReleaseStringUTFChars, // ReleaseStringUTFChars
2698 _Jv_JNI_GetArrayLength, // GetArrayLength
2699 _Jv_JNI_NewObjectArray, // NewObjectArray
2700 _Jv_JNI_GetObjectArrayElement, // GetObjectArrayElement
2701 _Jv_JNI_SetObjectArrayElement, // SetObjectArrayElement
2702 _Jv_JNI_NewPrimitiveArray<jboolean, JvPrimClass (boolean)>,
2703 // NewBooleanArray
2704 _Jv_JNI_NewPrimitiveArray<jbyte, JvPrimClass (byte)>, // NewByteArray
2705 _Jv_JNI_NewPrimitiveArray<jchar, JvPrimClass (char)>, // NewCharArray
2706 _Jv_JNI_NewPrimitiveArray<jshort, JvPrimClass (short)>, // NewShortArray
2707 _Jv_JNI_NewPrimitiveArray<jint, JvPrimClass (int)>, // NewIntArray
2708 _Jv_JNI_NewPrimitiveArray<jlong, JvPrimClass (long)>, // NewLongArray
2709 _Jv_JNI_NewPrimitiveArray<jfloat, JvPrimClass (float)>, // NewFloatArray
2710 _Jv_JNI_NewPrimitiveArray<jdouble, JvPrimClass (double)>, // NewDoubleArray
2711 _Jv_JNI_GetPrimitiveArrayElements<jboolean, JvPrimClass (boolean)>,
2712 // GetBooleanArrayElements
2713 _Jv_JNI_GetPrimitiveArrayElements<jbyte, JvPrimClass (byte)>,
2714 // GetByteArrayElements
2715 _Jv_JNI_GetPrimitiveArrayElements<jchar, JvPrimClass (char)>,
2716 // GetCharArrayElements
2717 _Jv_JNI_GetPrimitiveArrayElements<jshort, JvPrimClass (short)>,
2718 // GetShortArrayElements
2719 _Jv_JNI_GetPrimitiveArrayElements<jint, JvPrimClass (int)>,
2720 // GetIntArrayElements
2721 _Jv_JNI_GetPrimitiveArrayElements<jlong, JvPrimClass (long)>,
2722 // GetLongArrayElements
2723 _Jv_JNI_GetPrimitiveArrayElements<jfloat, JvPrimClass (float)>,
2724 // GetFloatArrayElements
2725 _Jv_JNI_GetPrimitiveArrayElements<jdouble, JvPrimClass (double)>,
2726 // GetDoubleArrayElements
2727 _Jv_JNI_ReleasePrimitiveArrayElements<jboolean, JvPrimClass (boolean)>,
2728 // ReleaseBooleanArrayElements
2729 _Jv_JNI_ReleasePrimitiveArrayElements<jbyte, JvPrimClass (byte)>,
2730 // ReleaseByteArrayElements
2731 _Jv_JNI_ReleasePrimitiveArrayElements<jchar, JvPrimClass (char)>,
2732 // ReleaseCharArrayElements
2733 _Jv_JNI_ReleasePrimitiveArrayElements<jshort, JvPrimClass (short)>,
2734 // ReleaseShortArrayElements
2735 _Jv_JNI_ReleasePrimitiveArrayElements<jint, JvPrimClass (int)>,
2736 // ReleaseIntArrayElements
2737 _Jv_JNI_ReleasePrimitiveArrayElements<jlong, JvPrimClass (long)>,
2738 // ReleaseLongArrayElements
2739 _Jv_JNI_ReleasePrimitiveArrayElements<jfloat, JvPrimClass (float)>,
2740 // ReleaseFloatArrayElements
2741 _Jv_JNI_ReleasePrimitiveArrayElements<jdouble, JvPrimClass (double)>,
2742 // ReleaseDoubleArrayElements
2743 _Jv_JNI_GetPrimitiveArrayRegion<jboolean, JvPrimClass (boolean)>,
2744 // GetBooleanArrayRegion
2745 _Jv_JNI_GetPrimitiveArrayRegion<jbyte, JvPrimClass (byte)>,
2746 // GetByteArrayRegion
2747 _Jv_JNI_GetPrimitiveArrayRegion<jchar, JvPrimClass (char)>,
2748 // GetCharArrayRegion
2749 _Jv_JNI_GetPrimitiveArrayRegion<jshort, JvPrimClass (short)>,
2750 // GetShortArrayRegion
2751 _Jv_JNI_GetPrimitiveArrayRegion<jint, JvPrimClass (int)>,
2752 // GetIntArrayRegion
2753 _Jv_JNI_GetPrimitiveArrayRegion<jlong, JvPrimClass (long)>,
2754 // GetLongArrayRegion
2755 _Jv_JNI_GetPrimitiveArrayRegion<jfloat, JvPrimClass (float)>,
2756 // GetFloatArrayRegion
2757 _Jv_JNI_GetPrimitiveArrayRegion<jdouble, JvPrimClass (double)>,
2758 // GetDoubleArrayRegion
2759 _Jv_JNI_SetPrimitiveArrayRegion<jboolean, JvPrimClass (boolean)>,
2760 // SetBooleanArrayRegion
2761 _Jv_JNI_SetPrimitiveArrayRegion<jbyte, JvPrimClass (byte)>,
2762 // SetByteArrayRegion
2763 _Jv_JNI_SetPrimitiveArrayRegion<jchar, JvPrimClass (char)>,
2764 // SetCharArrayRegion
2765 _Jv_JNI_SetPrimitiveArrayRegion<jshort, JvPrimClass (short)>,
2766 // SetShortArrayRegion
2767 _Jv_JNI_SetPrimitiveArrayRegion<jint, JvPrimClass (int)>,
2768 // SetIntArrayRegion
2769 _Jv_JNI_SetPrimitiveArrayRegion<jlong, JvPrimClass (long)>,
2770 // SetLongArrayRegion
2771 _Jv_JNI_SetPrimitiveArrayRegion<jfloat, JvPrimClass (float)>,
2772 // SetFloatArrayRegion
2773 _Jv_JNI_SetPrimitiveArrayRegion<jdouble, JvPrimClass (double)>,
2774 // SetDoubleArrayRegion
2775 _Jv_JNI_RegisterNatives, // RegisterNatives
2776 _Jv_JNI_UnregisterNatives, // UnregisterNatives
2777 _Jv_JNI_MonitorEnter, // MonitorEnter
2778 _Jv_JNI_MonitorExit, // MonitorExit
2779 _Jv_JNI_GetJavaVM, // GetJavaVM
2780
2781 _Jv_JNI_GetStringRegion, // GetStringRegion
2782 _Jv_JNI_GetStringUTFRegion, // GetStringUTFRegion
2783 _Jv_JNI_GetPrimitiveArrayCritical, // GetPrimitiveArrayCritical
2784 _Jv_JNI_ReleasePrimitiveArrayCritical, // ReleasePrimitiveArrayCritical
2785 _Jv_JNI_GetStringCritical, // GetStringCritical
2786 _Jv_JNI_ReleaseStringCritical, // ReleaseStringCritical
2787
2788 _Jv_JNI_NewWeakGlobalRef, // NewWeakGlobalRef
2789 _Jv_JNI_DeleteWeakGlobalRef, // DeleteWeakGlobalRef
2790
2791 _Jv_JNI_ExceptionCheck, // ExceptionCheck
2792
2793 _Jv_JNI_NewDirectByteBuffer, // NewDirectByteBuffer
2794 _Jv_JNI_GetDirectBufferAddress, // GetDirectBufferAddress
2795 _Jv_JNI_GetDirectBufferCapacity // GetDirectBufferCapacity
2796 };
2797
2798 struct JNIInvokeInterface _Jv_JNI_InvokeFunctions =
2799 {
2800 RESERVED,
2801 RESERVED,
2802 RESERVED,
2803
2804 _Jv_JNI_DestroyJavaVM,
2805 _Jv_JNI_AttachCurrentThread,
2806 _Jv_JNI_DetachCurrentThread,
2807 _Jv_JNI_GetEnv,
2808 _Jv_JNI_AttachCurrentThreadAsDaemon
2809 };
my patches to zpugcc