1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "classfile/altHashing.hpp"
28 #include "classfile/classLoader.hpp"
29 #include "classfile/javaClasses.hpp"
30 #include "classfile/symbolTable.hpp"
31 #include "classfile/systemDictionary.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "interpreter/linkResolver.hpp"
34 #ifndef SERIALGC
35 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
36 #endif // SERIALGC
37 #include "memory/allocation.hpp"
38 #include "memory/allocation.inline.hpp"
39 #include "memory/gcLocker.inline.hpp"
40 #include "memory/oopFactory.hpp"
41 #include "memory/universe.inline.hpp"
42 #include "oops/instanceKlass.hpp"
43 #include "oops/instanceOop.hpp"
44 #include "oops/markOop.hpp"
45 #include "oops/method.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/objArrayOop.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/symbol.hpp"
50 #include "oops/typeArrayKlass.hpp"
51 #include "oops/typeArrayOop.hpp"
52 #include "prims/jni.h"
53 #include "prims/jniCheck.hpp"
54 #include "prims/jniExport.hpp"
55 #include "prims/jniFastGetField.hpp"
56 #include "prims/jvm.h"
57 #include "prims/jvm_misc.hpp"
58 #include "prims/jvmtiExport.hpp"
59 #include "prims/jvmtiThreadState.hpp"
60 #include "runtime/compilationPolicy.hpp"
61 #include "runtime/fieldDescriptor.hpp"
62 #include "runtime/fprofiler.hpp"
63 #include "runtime/handles.inline.hpp"
64 #include "runtime/interfaceSupport.hpp"
65 #include "runtime/java.hpp"
66 #include "runtime/javaCalls.hpp"
67 #include "runtime/jfieldIDWorkaround.hpp"
68 #include "runtime/reflection.hpp"
69 #include "runtime/sharedRuntime.hpp"
70 #include "runtime/signature.hpp"
71 #include "runtime/vm_operations.hpp"
72 #include "services/runtimeService.hpp"
73 #include "trace/tracing.hpp"
74 #include "trace/traceEventTypes.hpp"
75 #include "utilities/defaultStream.hpp"
76 #include "utilities/dtrace.hpp"
77 #include "utilities/events.hpp"
78 #include "utilities/histogram.hpp"
79 #ifdef TARGET_OS_FAMILY_linux
80 # include "os_linux.inline.hpp"
81 # include "thread_linux.inline.hpp"
82 #endif
83 #ifdef TARGET_OS_FAMILY_solaris
84 # include "os_solaris.inline.hpp"
85 # include "thread_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 # include "thread_windows.inline.hpp"
90 #endif
91 #ifdef TARGET_OS_FAMILY_bsd
92 # include "os_bsd.inline.hpp"
93 # include "thread_bsd.inline.hpp"
94 #endif
95
96 static jint CurrentVersion = JNI_VERSION_1_6;
97
98
99 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
100 // '-return' probe regardless of the return path is taken out of the function.
101 // Methods that have multiple return paths use this to avoid having to
102 // instrument each return path. Methods that use CHECK or THROW must use this
103 // since those macros can cause an immedate uninstrumented return.
104 //
105 // In order to get the return value, a reference to the variable containing
106 // the return value must be passed to the contructor of the object, and
107 // the return value must be set before return (since the mark object has
108 // a reference to it).
109 //
110 // Example:
111 // DT_RETURN_MARK_DECL(SomeFunc, int);
112 // JNI_ENTRY(int, SomeFunc, ...)
113 // int return_value = 0;
114 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
115 // foo(CHECK_0)
116 // return_value = 5;
117 // return return_value;
118 // JNI_END
119 #ifndef USDT2
120 #define DT_RETURN_MARK_DECL(name, type) \
121 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
122 DTRACE_ONLY( \
123 class DTraceReturnProbeMark_##name { \
124 public: \
125 const type& _ret_ref; \
126 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
127 ~DTraceReturnProbeMark_##name() { \
128 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
129 } \
130 } \
131 )
132 // Void functions are simpler since there's no return value
133 #define DT_VOID_RETURN_MARK_DECL(name) \
134 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
135 DTRACE_ONLY( \
136 class DTraceReturnProbeMark_##name { \
137 public: \
138 ~DTraceReturnProbeMark_##name() { \
139 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
140 } \
141 } \
142 )
143
144 #else /* USDT2 */
145
146 #define DT_RETURN_MARK_DECL(name, type, probe) \
147 DTRACE_ONLY( \
148 class DTraceReturnProbeMark_##name { \
149 public: \
150 const type& _ret_ref; \
151 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
152 ~DTraceReturnProbeMark_##name() { \
153 probe; \
154 } \
155 } \
156 )
157 // Void functions are simpler since there's no return value
158 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
159 DTRACE_ONLY( \
160 class DTraceReturnProbeMark_##name { \
161 public: \
162 ~DTraceReturnProbeMark_##name() { \
163 probe; \
164 } \
165 } \
166 )
167 #endif /* USDT2 */
168
169 // Place these macros in the function to mark the return. Non-void
170 // functions need the type and address of the return value.
171 #define DT_RETURN_MARK(name, type, ref) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
173 #define DT_VOID_RETURN_MARK(name) \
174 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
175
176
177 // Use these to select distinct code for floating-point vs. non-floating point
178 // situations. Used from within common macros where we need slightly
179 // different behavior for Float/Double
180 #define FP_SELECT_Boolean(intcode, fpcode) intcode
181 #define FP_SELECT_Byte(intcode, fpcode) intcode
182 #define FP_SELECT_Char(intcode, fpcode) intcode
183 #define FP_SELECT_Short(intcode, fpcode) intcode
184 #define FP_SELECT_Object(intcode, fpcode) intcode
185 #define FP_SELECT_Int(intcode, fpcode) intcode
186 #define FP_SELECT_Long(intcode, fpcode) intcode
187 #define FP_SELECT_Float(intcode, fpcode) fpcode
188 #define FP_SELECT_Double(intcode, fpcode) fpcode
189 #define FP_SELECT(TypeName, intcode, fpcode) \
190 FP_SELECT_##TypeName(intcode, fpcode)
191
192 #define COMMA ,
193
194 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
195 // (dtrace doesn't do FP yet)
196 #ifndef USDT2
197 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
198 FP_SELECT(TypeName, \
199 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
200 #else /* USDT2 */
201 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
202 FP_SELECT(TypeName, \
203 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
204 #endif /* USDT2 */
205 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
206 FP_SELECT(TypeName, \
207 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
208
209
210 // out-of-line helpers for class jfieldIDWorkaround:
211
212 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
213 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
214 uintptr_t as_uint = (uintptr_t) id;
215 intptr_t offset = raw_instance_offset(id);
216 if (is_checked_jfieldID(id)) {
217 if (!klass_hash_ok(k, id)) {
218 return false;
219 }
220 }
221 return InstanceKlass::cast(k)->contains_field_offset(offset);
222 } else {
223 JNIid* result = (JNIid*) id;
224 #ifdef ASSERT
225 return result != NULL && result->is_static_field_id();
226 #else
227 return result != NULL;
228 #endif
229 }
230 }
231
232
233 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
234 if (offset <= small_offset_mask) {
235 Klass* field_klass = k;
236 Klass* super_klass = Klass::cast(field_klass)->super();
237 // With compressed oops the most super class with nonstatic fields would
238 // be the owner of fields embedded in the header.
239 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
240 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
241 field_klass = super_klass; // super contains the field also
242 super_klass = Klass::cast(field_klass)->super();
243 }
244 debug_only(No_Safepoint_Verifier nosafepoint;)
245 uintptr_t klass_hash = field_klass->identity_hash();
246 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
247 } else {
248 #if 0
249 #ifndef PRODUCT
250 {
251 ResourceMark rm;
252 warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
253 }
254 #endif
255 #endif
256 return 0;
257 }
258 }
259
260 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
261 uintptr_t as_uint = (uintptr_t) id;
262 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
263 do {
264 debug_only(No_Safepoint_Verifier nosafepoint;)
265 // Could use a non-blocking query for identity_hash here...
266 if ((k->identity_hash() & klass_mask) == klass_hash)
267 return true;
268 k = Klass::cast(k)->super();
269 } while (k != NULL);
270 return false;
271 }
272
273 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
274 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
275 uintptr_t as_uint = (uintptr_t) id;
276 intptr_t offset = raw_instance_offset(id);
277 if (VerifyJNIFields) {
278 if (is_checked_jfieldID(id)) {
279 guarantee(klass_hash_ok(k, id),
280 "Bug in native code: jfieldID class must match object");
281 } else {
282 #if 0
283 #ifndef PRODUCT
284 if (Verbose) {
285 ResourceMark rm;
286 warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
287 }
288 #endif
289 #endif
290 }
291 }
292 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
293 "Bug in native code: jfieldID offset must address interior of object");
294 }
295
296 // Pick a reasonable higher bound for local capacity requested
297 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
298 // high because a test (or very unusual application) may try to allocate
299 // that many handles and run out of swap space. An implementation is
300 // permitted to allocate more handles than the ensured capacity, so this
301 // value is set high enough to prevent compatibility problems.
302 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
303
304
305 // Wrapper to trace JNI functions
306
307 #ifdef ASSERT
308 Histogram* JNIHistogram;
309 static volatile jint JNIHistogram_lock = 0;
310
311 class JNITraceWrapper : public StackObj {
312 public:
313 JNITraceWrapper(const char* format, ...) {
314 if (TraceJNICalls) {
315 va_list ap;
316 va_start(ap, format);
317 tty->print("JNI ");
318 tty->vprint_cr(format, ap);
319 va_end(ap);
320 }
321 }
322 };
323
324 class JNIHistogramElement : public HistogramElement {
325 public:
326 JNIHistogramElement(const char* name);
327 };
328
329 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
330 _name = elementName;
331 uintx count = 0;
332
333 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
334 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
335 count +=1;
336 if ( (WarnOnStalledSpinLock > 0)
337 && (count % WarnOnStalledSpinLock == 0)) {
338 warning("JNIHistogram_lock seems to be stalled");
339 }
340 }
341 }
342
343
344 if(JNIHistogram == NULL)
345 JNIHistogram = new Histogram("JNI Call Counts",100);
346
347 JNIHistogram->add_element(this);
348 Atomic::dec(&JNIHistogram_lock);
349 }
350
351 #define JNICountWrapper(arg) \
352 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
353 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
354 if (e != NULL) e->increment_count()
355 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
356 #else
357 #define JNIWrapper(arg)
358 #endif
359
360
361 // Implementation of JNI entries
362
363 #ifndef USDT2
364 DT_RETURN_MARK_DECL(DefineClass, jclass);
365 #else /* USDT2 */
366 DT_RETURN_MARK_DECL(DefineClass, jclass
367 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
368 #endif /* USDT2 */
369
370 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
371 const jbyte *buf, jsize bufLen))
372 JNIWrapper("DefineClass");
373
374 #ifndef USDT2
375 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
376 env, name, loaderRef, buf, bufLen);
377 #else /* USDT2 */
378 HOTSPOT_JNI_DEFINECLASS_ENTRY(
379 env, (char*) name, loaderRef, (char*) buf, bufLen);
380 #endif /* USDT2 */
381 jclass cls = NULL;
382 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
383
384 TempNewSymbol class_name = NULL;
385 // Since exceptions can be thrown, class initialization can take place
386 // if name is NULL no check for class name in .class stream has to be made.
387 if (name != NULL) {
388 const int str_len = (int)strlen(name);
389 if (str_len > Symbol::max_length()) {
390 // It's impossible to create this class; the name cannot fit
391 // into the constant pool.
392 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
393 }
394 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
395 }
396 ResourceMark rm(THREAD);
397 ClassFileStream st((u1*) buf, bufLen, NULL);
398 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
399
400 if (UsePerfData && !class_loader.is_null()) {
401 // check whether the current caller thread holds the lock or not.
402 // If not, increment the corresponding counter
403 if (ObjectSynchronizer::
404 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
405 ObjectSynchronizer::owner_self) {
406 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
407 }
408 }
409 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
410 Handle(), &st, true,
411 CHECK_NULL);
412
413 if (TraceClassResolution && k != NULL) {
414 trace_class_resolution(k);
415 }
416
417 cls = (jclass)JNIHandles::make_local(
418 env, Klass::cast(k)->java_mirror());
419 return cls;
420 JNI_END
421
422
423
424 static bool first_time_FindClass = true;
425
426 #ifndef USDT2
427 DT_RETURN_MARK_DECL(FindClass, jclass);
428 #else /* USDT2 */
429 DT_RETURN_MARK_DECL(FindClass, jclass
430 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
431 #endif /* USDT2 */
432
433 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
434 JNIWrapper("FindClass");
435 #ifndef USDT2
436 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
437 #else /* USDT2 */
438 HOTSPOT_JNI_FINDCLASS_ENTRY(
439 env, (char *)name);
440 #endif /* USDT2 */
441
442 jclass result = NULL;
443 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
444
445 // Remember if we are the first invocation of jni_FindClass
446 bool first_time = first_time_FindClass;
447 first_time_FindClass = false;
448
449 // Sanity check the name: it cannot be null or larger than the maximum size
450 // name we can fit in the constant pool.
451 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
452 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
453 }
454
455 //%note jni_3
456 Handle loader;
457 Handle protection_domain;
458 // Find calling class
459 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
460 if (k.not_null()) {
461 loader = Handle(THREAD, k->class_loader());
462 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
463 // in the correct class context.
464 if (loader.is_null() &&
465 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
466 JavaValue result(T_OBJECT);
467 JavaCalls::call_static(&result, k,
468 vmSymbols::getFromClass_name(),
469 vmSymbols::void_class_signature(),
470 thread);
471 if (HAS_PENDING_EXCEPTION) {
472 Handle ex(thread, thread->pending_exception());
473 CLEAR_PENDING_EXCEPTION;
474 THROW_HANDLE_0(ex);
475 }
476 oop mirror = (oop) result.get_jobject();
477 loader = Handle(THREAD,
478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
479 protection_domain = Handle(THREAD,
480 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
481 }
482 } else {
483 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
484 loader = Handle(THREAD, SystemDictionary::java_system_loader());
485 }
486
487 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
488 result = find_class_from_class_loader(env, sym, true, loader,
489 protection_domain, true, thread);
490
491 if (TraceClassResolution && result != NULL) {
492 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
493 }
494
495 // If we were the first invocation of jni_FindClass, we enable compilation again
496 // rather than just allowing invocation counter to overflow and decay.
497 // Controlled by flag DelayCompilationDuringStartup.
498 if (first_time && !CompileTheWorld)
499 CompilationPolicy::completed_vm_startup();
500
501 return result;
502 JNI_END
503
504 #ifndef USDT2
505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
506 #else /* USDT2 */
507 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
508 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
509 #endif /* USDT2 */
510
511 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
512 JNIWrapper("FromReflectedMethod");
513 #ifndef USDT2
514 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
515 #else /* USDT2 */
516 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
517 env, method);
518 #endif /* USDT2 */
519 jmethodID ret = NULL;
520 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
521
522 // method is a handle to a java.lang.reflect.Method object
523 oop reflected = JNIHandles::resolve_non_null(method);
524 oop mirror = NULL;
525 int slot = 0;
526
527 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
528 mirror = java_lang_reflect_Constructor::clazz(reflected);
529 slot = java_lang_reflect_Constructor::slot(reflected);
530 } else {
531 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
532 mirror = java_lang_reflect_Method::clazz(reflected);
533 slot = java_lang_reflect_Method::slot(reflected);
534 }
535 Klass* k = java_lang_Class::as_Klass(mirror);
536
537 KlassHandle k1(THREAD, k);
538 // Make sure class is initialized before handing id's out to methods
539 Klass::cast(k1())->initialize(CHECK_NULL);
540 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
541 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
542 return ret;
543 JNI_END
544
545 #ifndef USDT2
546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
547 #else /* USDT2 */
548 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
549 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
550 #endif /* USDT2 */
551
552 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
553 JNIWrapper("FromReflectedField");
554 #ifndef USDT2
555 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
556 #else /* USDT2 */
557 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
558 env, field);
559 #endif /* USDT2 */
560 jfieldID ret = NULL;
561 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
562
563 // field is a handle to a java.lang.reflect.Field object
564 oop reflected = JNIHandles::resolve_non_null(field);
565 oop mirror = java_lang_reflect_Field::clazz(reflected);
566 Klass* k = java_lang_Class::as_Klass(mirror);
567 int slot = java_lang_reflect_Field::slot(reflected);
568 int modifiers = java_lang_reflect_Field::modifiers(reflected);
569
570 KlassHandle k1(THREAD, k);
571 // Make sure class is initialized before handing id's out to fields
572 Klass::cast(k1())->initialize(CHECK_NULL);
573
574 // First check if this is a static field
575 if (modifiers & JVM_ACC_STATIC) {
576 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
577 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
578 assert(id != NULL, "corrupt Field object");
579 debug_only(id->set_is_static_field_id();)
580 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
581 ret = jfieldIDWorkaround::to_static_jfieldID(id);
582 return ret;
583 }
584
585 // The slot is the index of the field description in the field-array
586 // The jfieldID is the offset of the field within the object
587 // It may also have hash bits for k, if VerifyJNIFields is turned on.
588 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
589 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
590 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
591 return ret;
592 JNI_END
593
594 #ifndef USDT2
595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
596 #else /* USDT2 */
597 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
598 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
599 #endif /* USDT2 */
600
601 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
602 JNIWrapper("ToReflectedMethod");
603 #ifndef USDT2
604 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
605 #else /* USDT2 */
606 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
607 env, cls, (uintptr_t) method_id, isStatic);
608 #endif /* USDT2 */
609 jobject ret = NULL;
610 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
611
612 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
613 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
614 oop reflection_method;
615 if (m->is_initializer()) {
616 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
617 } else {
618 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
619 }
620 ret = JNIHandles::make_local(env, reflection_method);
621 return ret;
622 JNI_END
623
624 #ifndef USDT2
625 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
626 #else /* USDT2 */
627 DT_RETURN_MARK_DECL(GetSuperclass, jclass
628 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
629 #endif /* USDT2 */
630
631 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
632 JNIWrapper("GetSuperclass");
633 #ifndef USDT2
634 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
635 #else /* USDT2 */
636 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
637 env, sub);
638 #endif /* USDT2 */
639 jclass obj = NULL;
640 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
641
642 oop mirror = JNIHandles::resolve_non_null(sub);
643 // primitive classes return NULL
644 if (java_lang_Class::is_primitive(mirror)) return NULL;
645
646 // Rules of Class.getSuperClass as implemented by KLass::java_super:
647 // arrays return Object
648 // interfaces return NULL
649 // proper classes return Klass::super()
650 Klass* k = java_lang_Class::as_Klass(mirror);
651 if (Klass::cast(k)->is_interface()) return NULL;
652
653 // return mirror for superclass
654 Klass* super = Klass::cast(k)->java_super();
655 // super2 is the value computed by the compiler's getSuperClass intrinsic:
656 debug_only(Klass* super2 = ( Klass::cast(k)->oop_is_array()
657 ? SystemDictionary::Object_klass()
658 : Klass::cast(k)->super() ) );
659 assert(super == super2,
660 "java_super computation depends on interface, array, other super");
661 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
662 return obj;
663 JNI_END
664
665 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
666 JNIWrapper("IsSubclassOf");
667 #ifndef USDT2
668 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
669 #else /* USDT2 */
670 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
671 env, sub, super);
672 #endif /* USDT2 */
673 oop sub_mirror = JNIHandles::resolve_non_null(sub);
674 oop super_mirror = JNIHandles::resolve_non_null(super);
675 if (java_lang_Class::is_primitive(sub_mirror) ||
676 java_lang_Class::is_primitive(super_mirror)) {
677 jboolean ret = (sub_mirror == super_mirror);
678 #ifndef USDT2
679 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
680 #else /* USDT2 */
681 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
682 ret);
683 #endif /* USDT2 */
684 return ret;
685 }
686 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
687 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
688 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
689 jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
690 JNI_TRUE : JNI_FALSE;
691 #ifndef USDT2
692 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
693 #else /* USDT2 */
694 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
695 ret);
696 #endif /* USDT2 */
697 return ret;
698 JNI_END
699
700 #ifndef USDT2
701 DT_RETURN_MARK_DECL(Throw, jint);
702 #else /* USDT2 */
703 DT_RETURN_MARK_DECL(Throw, jint
704 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
705 #endif /* USDT2 */
706
707 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
708 JNIWrapper("Throw");
709 #ifndef USDT2
710 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
711 #else /* USDT2 */
712 HOTSPOT_JNI_THROW_ENTRY(
713 env, obj);
714 #endif /* USDT2 */
715 jint ret = JNI_OK;
716 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
717
718 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
719 ShouldNotReachHere();
720 JNI_END
721
722 #ifndef USDT2
723 DT_RETURN_MARK_DECL(ThrowNew, jint);
724 #else /* USDT2 */
725 DT_RETURN_MARK_DECL(ThrowNew, jint
726 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
727 #endif /* USDT2 */
728
729 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
730 JNIWrapper("ThrowNew");
731 #ifndef USDT2
732 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
733 #else /* USDT2 */
734 HOTSPOT_JNI_THROWNEW_ENTRY(
735 env, clazz, (char *) message);
736 #endif /* USDT2 */
737 jint ret = JNI_OK;
738 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
739
740 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
741 Symbol* name = k->name();
742 Handle class_loader (THREAD, k->class_loader());
743 Handle protection_domain (THREAD, k->protection_domain());
744 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
745 ShouldNotReachHere();
746 JNI_END
747
748
749 // JNI functions only transform a pending async exception to a synchronous
750 // exception in ExceptionOccurred and ExceptionCheck calls, since
751 // delivering an async exception in other places won't change the native
752 // code's control flow and would be harmful when native code further calls
753 // JNI functions with a pending exception. Async exception is also checked
754 // during the call, so ExceptionOccurred/ExceptionCheck won't return
755 // false but deliver the async exception at the very end during
756 // state transition.
757
758 static void jni_check_async_exceptions(JavaThread *thread) {
759 assert(thread == Thread::current(), "must be itself");
760 thread->check_and_handle_async_exceptions();
761 }
762
763 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
764 JNIWrapper("ExceptionOccurred");
765 #ifndef USDT2
766 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
767 #else /* USDT2 */
768 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
769 env);
770 #endif /* USDT2 */
771 jni_check_async_exceptions(thread);
772 oop exception = thread->pending_exception();
773 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
774 #ifndef USDT2
775 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
776 #else /* USDT2 */
777 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
778 ret);
779 #endif /* USDT2 */
780 return ret;
781 JNI_END
782
783
784 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
785 JNIWrapper("ExceptionDescribe");
786 #ifndef USDT2
787 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
788 #else /* USDT2 */
789 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
790 env);
791 #endif /* USDT2 */
792 if (thread->has_pending_exception()) {
793 Handle ex(thread, thread->pending_exception());
794 thread->clear_pending_exception();
795 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
796 // Don't print anything if we are being killed.
797 } else {
798 jio_fprintf(defaultStream::error_stream(), "Exception ");
799 if (thread != NULL && thread->threadObj() != NULL) {
800 ResourceMark rm(THREAD);
801 jio_fprintf(defaultStream::error_stream(),
802 "in thread \"%s\" ", thread->get_thread_name());
803 }
804 if (ex->is_a(SystemDictionary::Throwable_klass())) {
805 JavaValue result(T_VOID);
806 JavaCalls::call_virtual(&result,
807 ex,
808 KlassHandle(THREAD,
809 SystemDictionary::Throwable_klass()),
810 vmSymbols::printStackTrace_name(),
811 vmSymbols::void_method_signature(),
812 THREAD);
813 // If an exception is thrown in the call it gets thrown away. Not much
814 // we can do with it. The native code that calls this, does not check
815 // for the exception - hence, it might still be in the thread when DestroyVM gets
816 // called, potentially causing a few asserts to trigger - since no pending exception
817 // is expected.
818 CLEAR_PENDING_EXCEPTION;
819 } else {
820 ResourceMark rm(THREAD);
821 jio_fprintf(defaultStream::error_stream(),
822 ". Uncaught exception of type %s.",
823 Klass::cast(ex->klass())->external_name());
824 }
825 }
826 }
827 #ifndef USDT2
828 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
829 #else /* USDT2 */
830 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
831 );
832 #endif /* USDT2 */
833 JNI_END
834
835
836 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
837 JNIWrapper("ExceptionClear");
838 #ifndef USDT2
839 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
840 #else /* USDT2 */
841 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
842 env);
843 #endif /* USDT2 */
844
845 // The jni code might be using this API to clear java thrown exception.
846 // So just mark jvmti thread exception state as exception caught.
847 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
848 if (state != NULL && state->is_exception_detected()) {
849 state->set_exception_caught();
850 }
851 thread->clear_pending_exception();
852 #ifndef USDT2
853 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
854 #else /* USDT2 */
855 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
856 );
857 #endif /* USDT2 */
858 JNI_END
859
860
861 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
862 JNIWrapper("FatalError");
863 #ifndef USDT2
864 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
865 #else /* USDT2 */
866 HOTSPOT_JNI_FATALERROR_ENTRY(
867 env, (char *) msg);
868 #endif /* USDT2 */
869 tty->print_cr("FATAL ERROR in native method: %s", msg);
870 thread->print_stack();
871 os::abort(); // Dump core and abort
872 JNI_END
873
874
875 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
876 JNIWrapper("PushLocalFrame");
877 #ifndef USDT2
878 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
879 #else /* USDT2 */
880 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
881 env, capacity);
882 #endif /* USDT2 */
883 //%note jni_11
884 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
885 #ifndef USDT2
886 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
887 #else /* USDT2 */
888 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
889 (uint32_t)JNI_ERR);
890 #endif /* USDT2 */
891 return JNI_ERR;
892 }
893 JNIHandleBlock* old_handles = thread->active_handles();
894 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
895 assert(new_handles != NULL, "should not be NULL");
896 new_handles->set_pop_frame_link(old_handles);
897 thread->set_active_handles(new_handles);
898 jint ret = JNI_OK;
899 #ifndef USDT2
900 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
901 #else /* USDT2 */
902 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
903 ret);
904 #endif /* USDT2 */
905 return ret;
906 JNI_END
907
908
909 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
910 JNIWrapper("PopLocalFrame");
911 #ifndef USDT2
912 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
913 #else /* USDT2 */
914 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
915 env, result);
916 #endif /* USDT2 */
917 //%note jni_11
918 Handle result_handle(thread, JNIHandles::resolve(result));
919 JNIHandleBlock* old_handles = thread->active_handles();
920 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
921 if (new_handles != NULL) {
922 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
923 // This way code will still work if PopLocalFrame is called without a corresponding
924 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
925 // the release_block call will release the blocks.
926 thread->set_active_handles(new_handles);
927 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
928 JNIHandleBlock::release_block(old_handles, thread); // may block
929 result = JNIHandles::make_local(thread, result_handle());
930 }
931 #ifndef USDT2
932 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
933 #else /* USDT2 */
934 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
935 result);
936 #endif /* USDT2 */
937 return result;
938 JNI_END
939
940
941 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
942 JNIWrapper("NewGlobalRef");
943 #ifndef USDT2
944 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
945 #else /* USDT2 */
946 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
947 env, ref);
948 #endif /* USDT2 */
949 Handle ref_handle(thread, JNIHandles::resolve(ref));
950 jobject ret = JNIHandles::make_global(ref_handle);
951 #ifndef USDT2
952 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
953 #else /* USDT2 */
954 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
955 ret);
956 #endif /* USDT2 */
957 return ret;
958 JNI_END
959
960 // Must be JNI_ENTRY (with HandleMark)
961 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
962 JNIWrapper("DeleteGlobalRef");
963 #ifndef USDT2
964 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
965 #else /* USDT2 */
966 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
967 env, ref);
968 #endif /* USDT2 */
969 JNIHandles::destroy_global(ref);
970 #ifndef USDT2
971 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
972 #else /* USDT2 */
973 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
974 );
975 #endif /* USDT2 */
976 JNI_END
977
978 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
979 JNIWrapper("DeleteLocalRef");
980 #ifndef USDT2
981 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
982 #else /* USDT2 */
983 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
984 env, obj);
985 #endif /* USDT2 */
986 JNIHandles::destroy_local(obj);
987 #ifndef USDT2
988 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
989 #else /* USDT2 */
990 HOTSPOT_JNI_DELETELOCALREF_RETURN(
991 );
992 #endif /* USDT2 */
993 JNI_END
994
995 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
996 JNIWrapper("IsSameObject");
997 #ifndef USDT2
998 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
999 #else /* USDT2 */
1000 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
1001 env, r1, r2);
1002 #endif /* USDT2 */
1003 oop a = JNIHandles::resolve(r1);
1004 oop b = JNIHandles::resolve(r2);
1005 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1006 #ifndef USDT2
1007 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1008 #else /* USDT2 */
1009 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1010 ret);
1011 #endif /* USDT2 */
1012 return ret;
1013 JNI_END
1014
1015
1016 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1017 JNIWrapper("NewLocalRef");
1018 #ifndef USDT2
1019 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1020 #else /* USDT2 */
1021 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1022 env, ref);
1023 #endif /* USDT2 */
1024 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1025 #ifndef USDT2
1026 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1027 #else /* USDT2 */
1028 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1029 ret);
1030 #endif /* USDT2 */
1031 return ret;
1032 JNI_END
1033
1034 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1035 JNIWrapper("EnsureLocalCapacity");
1036 #ifndef USDT2
1037 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1038 #else /* USDT2 */
1039 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1040 env, capacity);
1041 #endif /* USDT2 */
1042 jint ret;
1043 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1044 ret = JNI_OK;
1045 } else {
1046 ret = JNI_ERR;
1047 }
1048 #ifndef USDT2
1049 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1050 #else /* USDT2 */
1051 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1052 ret);
1053 #endif /* USDT2 */
1054 return ret;
1055 JNI_END
1056
1057 // Return the Handle Type
1058 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1059 JNIWrapper("GetObjectRefType");
1060 #ifndef USDT2
1061 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1062 #else /* USDT2 */
1063 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1064 env, obj);
1065 #endif /* USDT2 */
1066 jobjectRefType ret;
1067 if (JNIHandles::is_local_handle(thread, obj) ||
1068 JNIHandles::is_frame_handle(thread, obj))
1069 ret = JNILocalRefType;
1070 else if (JNIHandles::is_global_handle(obj))
1071 ret = JNIGlobalRefType;
1072 else if (JNIHandles::is_weak_global_handle(obj))
1073 ret = JNIWeakGlobalRefType;
1074 else
1075 ret = JNIInvalidRefType;
1076 #ifndef USDT2
1077 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1078 #else /* USDT2 */
1079 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1080 (void *) ret);
1081 #endif /* USDT2 */
1082 return ret;
1083 JNI_END
1084
1085
1086 class JNI_ArgumentPusher : public SignatureIterator {
1087 protected:
1088 JavaCallArguments* _arguments;
1089
1090 virtual void get_bool () = 0;
1091 virtual void get_char () = 0;
1092 virtual void get_short () = 0;
1093 virtual void get_byte () = 0;
1094 virtual void get_int () = 0;
1095 virtual void get_long () = 0;
1096 virtual void get_float () = 0;
1097 virtual void get_double () = 0;
1098 virtual void get_object () = 0;
1099
1100 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1101 this->_return_type = T_ILLEGAL;
1102 _arguments = NULL;
1103 }
1104
1105 public:
1106 virtual void iterate( uint64_t fingerprint ) = 0;
1107
1108 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1109
1110 inline void do_bool() { if (!is_return_type()) get_bool(); }
1111 inline void do_char() { if (!is_return_type()) get_char(); }
1112 inline void do_short() { if (!is_return_type()) get_short(); }
1113 inline void do_byte() { if (!is_return_type()) get_byte(); }
1114 inline void do_int() { if (!is_return_type()) get_int(); }
1115 inline void do_long() { if (!is_return_type()) get_long(); }
1116 inline void do_float() { if (!is_return_type()) get_float(); }
1117 inline void do_double() { if (!is_return_type()) get_double(); }
1118 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1119 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1120 inline void do_void() { }
1121
1122 JavaCallArguments* arguments() { return _arguments; }
1123 void push_receiver(Handle h) { _arguments->push_oop(h); }
1124 };
1125
1126
1127 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1128 protected:
1129 va_list _ap;
1130
1131 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1132 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1133 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1134 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1135 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1136
1137 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1138
1139 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1140 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1141 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1142 inline void get_object() { jobject l = va_arg(_ap, jobject);
1143 _arguments->push_oop(Handle((oop *)l, false)); }
1144
1145 inline void set_ap(va_list rap) {
1146 #ifdef va_copy
1147 va_copy(_ap, rap);
1148 #elif defined (__va_copy)
1149 __va_copy(_ap, rap);
1150 #else
1151 _ap = rap;
1152 #endif
1153 }
1154
1155 public:
1156 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1157 : JNI_ArgumentPusher(signature) {
1158 set_ap(rap);
1159 }
1160 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1161 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1162 set_ap(rap);
1163 }
1164
1165 // Optimized path if we have the bitvector form of signature
1166 void iterate( uint64_t fingerprint ) {
1167 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1168 else {
1169 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1170 result_feature_mask);
1171
1172 assert(fingerprint, "Fingerprint should not be 0");
1173 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1174 while ( 1 ) {
1175 switch ( fingerprint & parameter_feature_mask ) {
1176 case bool_parm:
1177 case char_parm:
1178 case short_parm:
1179 case byte_parm:
1180 case int_parm:
1181 get_int();
1182 break;
1183 case obj_parm:
1184 get_object();
1185 break;
1186 case long_parm:
1187 get_long();
1188 break;
1189 case float_parm:
1190 get_float();
1191 break;
1192 case double_parm:
1193 get_double();
1194 break;
1195 case done_parm:
1196 return;
1197 break;
1198 default:
1199 ShouldNotReachHere();
1200 break;
1201 }
1202 fingerprint >>= parameter_feature_size;
1203 }
1204 }
1205 }
1206 };
1207
1208
1209 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1210 protected:
1211 const jvalue *_ap;
1212
1213 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1214 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1215 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1216 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1217 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1218
1219 inline void get_long() { _arguments->push_long((_ap++)->j); }
1220 inline void get_float() { _arguments->push_float((_ap++)->f); }
1221 inline void get_double() { _arguments->push_double((_ap++)->d);}
1222 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1223
1224 inline void set_ap(const jvalue *rap) { _ap = rap; }
1225
1226 public:
1227 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1228 : JNI_ArgumentPusher(signature) {
1229 set_ap(rap);
1230 }
1231 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1232 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1233 set_ap(rap);
1234 }
1235
1236 // Optimized path if we have the bitvector form of signature
1237 void iterate( uint64_t fingerprint ) {
1238 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1239 else {
1240 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1241 result_feature_mask);
1242 assert(fingerprint, "Fingerprint should not be 0");
1243 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1244 while ( 1 ) {
1245 switch ( fingerprint & parameter_feature_mask ) {
1246 case bool_parm:
1247 get_bool();
1248 break;
1249 case char_parm:
1250 get_char();
1251 break;
1252 case short_parm:
1253 get_short();
1254 break;
1255 case byte_parm:
1256 get_byte();
1257 break;
1258 case int_parm:
1259 get_int();
1260 break;
1261 case obj_parm:
1262 get_object();
1263 break;
1264 case long_parm:
1265 get_long();
1266 break;
1267 case float_parm:
1268 get_float();
1269 break;
1270 case double_parm:
1271 get_double();
1272 break;
1273 case done_parm:
1274 return;
1275 break;
1276 default:
1277 ShouldNotReachHere();
1278 break;
1279 }
1280 fingerprint >>= parameter_feature_size;
1281 }
1282 }
1283 }
1284 };
1285
1286
1287 enum JNICallType {
1288 JNI_STATIC,
1289 JNI_VIRTUAL,
1290 JNI_NONVIRTUAL
1291 };
1292
1293
1294
1295 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1296 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1297
1298 // Create object to hold arguments for the JavaCall, and associate it with
1299 // the jni parser
1300 ResourceMark rm(THREAD);
1301 int number_of_parameters = method->size_of_parameters();
1302 JavaCallArguments java_args(number_of_parameters);
1303 args->set_java_argument_object(&java_args);
1304
1305 assert(method->is_static(), "method should be static");
1306
1307 // Fill out JavaCallArguments object
1308 args->iterate( Fingerprinter(method).fingerprint() );
1309 // Initialize result type
1310 result->set_type(args->get_ret_type());
1311
1312 // Invoke the method. Result is returned as oop.
1313 JavaCalls::call(result, method, &java_args, CHECK);
1314
1315 // Convert result
1316 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1317 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1318 }
1319 }
1320
1321
1322 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1323 oop recv = JNIHandles::resolve(receiver);
1324 if (recv == NULL) {
1325 THROW(vmSymbols::java_lang_NullPointerException());
1326 }
1327 Handle h_recv(THREAD, recv);
1328
1329 int number_of_parameters;
1330 Method* selected_method;
1331 {
1332 Method* m = Method::resolve_jmethod_id(method_id);
1333 number_of_parameters = m->size_of_parameters();
1334 Klass* holder = m->method_holder();
1335 if (!(Klass::cast(holder))->is_interface()) {
1336 // non-interface call -- for that little speed boost, don't handlize
1337 debug_only(No_Safepoint_Verifier nosafepoint;)
1338 if (call_type == JNI_VIRTUAL) {
1339 // jni_GetMethodID makes sure class is linked and initialized
1340 // so m should have a valid vtable index.
1341 int vtbl_index = m->vtable_index();
1342 if (vtbl_index != Method::nonvirtual_vtable_index) {
1343 Klass* k = h_recv->klass();
1344 // k might be an arrayKlassOop but all vtables start at
1345 // the same place. The cast is to avoid virtual call and assertion.
1346 InstanceKlass *ik = (InstanceKlass*)k;
1347 selected_method = ik->method_at_vtable(vtbl_index);
1348 } else {
1349 // final method
1350 selected_method = m;
1351 }
1352 } else {
1353 // JNI_NONVIRTUAL call
1354 selected_method = m;
1355 }
1356 } else {
1357 // interface call
1358 KlassHandle h_holder(THREAD, holder);
1359
1360 int itbl_index = m->cached_itable_index();
1361 if (itbl_index == -1) {
1362 itbl_index = klassItable::compute_itable_index(m);
1363 m->set_cached_itable_index(itbl_index);
1364 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1365 }
1366 Klass* k = h_recv->klass();
1367 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1368 }
1369 }
1370
1371 methodHandle method(THREAD, selected_method);
1372
1373 // Create object to hold arguments for the JavaCall, and associate it with
1374 // the jni parser
1375 ResourceMark rm(THREAD);
1376 JavaCallArguments java_args(number_of_parameters);
1377 args->set_java_argument_object(&java_args);
1378
1379 // handle arguments
1380 assert(!method->is_static(), "method should not be static");
1381 args->push_receiver(h_recv); // Push jobject handle
1382
1383 // Fill out JavaCallArguments object
1384 args->iterate( Fingerprinter(method).fingerprint() );
1385 // Initialize result type
1386 result->set_type(args->get_ret_type());
1387
1388 // Invoke the method. Result is returned as oop.
1389 JavaCalls::call(result, method, &java_args, CHECK);
1390
1391 // Convert result
1392 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1393 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1394 }
1395 }
1396
1397
1398 static instanceOop alloc_object(jclass clazz, TRAPS) {
1399 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1400 Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
1401 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1402 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1403 return ih;
1404 }
1405
1406 #ifndef USDT2
1407 DT_RETURN_MARK_DECL(AllocObject, jobject);
1408 #else /* USDT2 */
1409 DT_RETURN_MARK_DECL(AllocObject, jobject
1410 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1411 #endif /* USDT2 */
1412
1413 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1414 JNIWrapper("AllocObject");
1415
1416 #ifndef USDT2
1417 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1418 #else /* USDT2 */
1419 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1420 env, clazz);
1421 #endif /* USDT2 */
1422 jobject ret = NULL;
1423 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1424
1425 instanceOop i = alloc_object(clazz, CHECK_NULL);
1426 ret = JNIHandles::make_local(env, i);
1427 return ret;
1428 JNI_END
1429
1430 #ifndef USDT2
1431 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1432 #else /* USDT2 */
1433 DT_RETURN_MARK_DECL(NewObjectA, jobject
1434 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1435 #endif /* USDT2 */
1436
1437 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1438 JNIWrapper("NewObjectA");
1439 #ifndef USDT2
1440 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1441 #else /* USDT2 */
1442 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1443 env, clazz, (uintptr_t) methodID);
1444 #endif /* USDT2 */
1445 jobject obj = NULL;
1446 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1447
1448 instanceOop i = alloc_object(clazz, CHECK_NULL);
1449 obj = JNIHandles::make_local(env, i);
1450 JavaValue jvalue(T_VOID);
1451 JNI_ArgumentPusherArray ap(methodID, args);
1452 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1453 return obj;
1454 JNI_END
1455
1456 #ifndef USDT2
1457 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1458 #else /* USDT2 */
1459 DT_RETURN_MARK_DECL(NewObjectV, jobject
1460 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1461 #endif /* USDT2 */
1462
1463 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1464 JNIWrapper("NewObjectV");
1465 #ifndef USDT2
1466 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1467 #else /* USDT2 */
1468 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1469 env, clazz, (uintptr_t) methodID);
1470 #endif /* USDT2 */
1471 jobject obj = NULL;
1472 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1473
1474 instanceOop i = alloc_object(clazz, CHECK_NULL);
1475 obj = JNIHandles::make_local(env, i);
1476 JavaValue jvalue(T_VOID);
1477 JNI_ArgumentPusherVaArg ap(methodID, args);
1478 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1479 return obj;
1480 JNI_END
1481
1482 #ifndef USDT2
1483 DT_RETURN_MARK_DECL(NewObject, jobject);
1484 #else /* USDT2 */
1485 DT_RETURN_MARK_DECL(NewObject, jobject
1486 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1487 #endif /* USDT2 */
1488
1489 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1490 JNIWrapper("NewObject");
1491 #ifndef USDT2
1492 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1493 #else /* USDT2 */
1494 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1495 env, clazz, (uintptr_t) methodID);
1496 #endif /* USDT2 */
1497 jobject obj = NULL;
1498 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1499
1500 instanceOop i = alloc_object(clazz, CHECK_NULL);
1501 obj = JNIHandles::make_local(env, i);
1502 va_list args;
1503 va_start(args, methodID);
1504 JavaValue jvalue(T_VOID);
1505 JNI_ArgumentPusherVaArg ap(methodID, args);
1506 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1507 va_end(args);
1508 return obj;
1509 JNI_END
1510
1511
1512 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1513 JNIWrapper("GetObjectClass");
1514 #ifndef USDT2
1515 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1516 #else /* USDT2 */
1517 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1518 env, obj);
1519 #endif /* USDT2 */
1520 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1521 jclass ret =
1522 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
1523 #ifndef USDT2
1524 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1525 #else /* USDT2 */
1526 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1527 ret);
1528 #endif /* USDT2 */
1529 return ret;
1530 JNI_END
1531
1532 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1533 JNIWrapper("IsInstanceOf");
1534 #ifndef USDT2
1535 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1536 #else /* USDT2 */
1537 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1538 env, obj, clazz);
1539 #endif /* USDT2 */
1540 jboolean ret = JNI_TRUE;
1541 if (obj != NULL) {
1542 ret = JNI_FALSE;
1543 Klass* k = java_lang_Class::as_Klass(
1544 JNIHandles::resolve_non_null(clazz));
1545 if (k != NULL) {
1546 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1547 }
1548 }
1549 #ifndef USDT2
1550 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1551 #else /* USDT2 */
1552 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1553 ret);
1554 #endif /* USDT2 */
1555 return ret;
1556 JNI_END
1557
1558
1559 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1560 const char *sig, bool is_static, TRAPS) {
1561 // %%%% This code should probably just call into a method in the LinkResolver
1562 //
1563 // The class should have been loaded (we have an instance of the class
1564 // passed in) so the method and signature should already be in the symbol
1565 // table. If they're not there, the method doesn't exist.
1566 const char *name_to_probe = (name_str == NULL)
1567 ? vmSymbols::object_initializer_name()->as_C_string()
1568 : name_str;
1569 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1570 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1571
1572 if (name == NULL || signature == NULL) {
1573 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1574 }
1575
1576 // Throw a NoSuchMethodError exception if we have an instance of a
1577 // primitive java.lang.Class
1578 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1579 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1580 }
1581
1582 KlassHandle klass(THREAD,
1583 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1584
1585 // Make sure class is linked and initialized before handing id's out to
1586 // Method*s.
1587 Klass::cast(klass())->initialize(CHECK_NULL);
1588
1589 Method* m;
1590 if (name == vmSymbols::object_initializer_name() ||
1591 name == vmSymbols::class_initializer_name()) {
1592 // Never search superclasses for constructors
1593 if (klass->oop_is_instance()) {
1594 m = InstanceKlass::cast(klass())->find_method(name, signature);
1595 } else {
1596 m = NULL;
1597 }
1598 } else {
1599 m = klass->lookup_method(name, signature);
1600 // Look up interfaces
1601 if (m == NULL && klass->oop_is_instance()) {
1602 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1603 signature);
1604 }
1605 }
1606 if (m == NULL || (m->is_static() != is_static)) {
1607 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1608 }
1609 return m->jmethod_id();
1610 }
1611
1612
1613 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1614 const char *name, const char *sig))
1615 JNIWrapper("GetMethodID");
1616 #ifndef USDT2
1617 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1618 #else /* USDT2 */
1619 HOTSPOT_JNI_GETMETHODID_ENTRY(
1620 env, clazz, (char *) name, (char *) sig);
1621 #endif /* USDT2 */
1622 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1623 #ifndef USDT2
1624 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1625 #else /* USDT2 */
1626 HOTSPOT_JNI_GETMETHODID_RETURN(
1627 (uintptr_t) ret);
1628 #endif /* USDT2 */
1629 return ret;
1630 JNI_END
1631
1632
1633 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1634 const char *name, const char *sig))
1635 JNIWrapper("GetStaticMethodID");
1636 #ifndef USDT2
1637 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1638 #else /* USDT2 */
1639 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1640 env, (char *) clazz, (char *) name, (char *)sig);
1641 #endif /* USDT2 */
1642 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1643 #ifndef USDT2
1644 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1645 #else /* USDT2 */
1646 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1647 (uintptr_t) ret);
1648 #endif /* USDT2 */
1649 return ret;
1650 JNI_END
1651
1652
1653
1654 //
1655 // Calling Methods
1656 //
1657
1658 #ifndef USDT2
1659 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1660 \
1661 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1662 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1663 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1664 \
1665 JNI_ENTRY(ResultType, \
1666 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1667 JNIWrapper("Call" XSTR(Result) "Method"); \
1668 \
1669 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1670 ResultType ret = 0;\
1671 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1672 (const ResultType&)ret);\
1673 \
1674 va_list args; \
1675 va_start(args, methodID); \
1676 JavaValue jvalue(Tag); \
1677 JNI_ArgumentPusherVaArg ap(methodID, args); \
1678 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1679 va_end(args); \
1680 ret = jvalue.get_##ResultType(); \
1681 return ret;\
1682 JNI_END \
1683 \
1684 \
1685 JNI_ENTRY(ResultType, \
1686 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1687 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1688 \
1689 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1690 ResultType ret = 0;\
1691 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1692 (const ResultType&)ret);\
1693 \
1694 JavaValue jvalue(Tag); \
1695 JNI_ArgumentPusherVaArg ap(methodID, args); \
1696 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1697 ret = jvalue.get_##ResultType(); \
1698 return ret;\
1699 JNI_END \
1700 \
1701 \
1702 JNI_ENTRY(ResultType, \
1703 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1704 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1705 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1706 ResultType ret = 0;\
1707 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1708 (const ResultType&)ret);\
1709 \
1710 JavaValue jvalue(Tag); \
1711 JNI_ArgumentPusherArray ap(methodID, args); \
1712 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1713 ret = jvalue.get_##ResultType(); \
1714 return ret;\
1715 JNI_END
1716
1717 // the runtime type of subword integral basic types is integer
1718 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1719 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1720 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1721 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1722
1723 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1724 DEFINE_CALLMETHOD(jint, Int, T_INT)
1725 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1726 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1727 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1728
1729 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1730 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1731 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1732
1733 #else /* USDT2 */
1734
1735 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1736 , EntryProbe, ReturnProbe) \
1737 \
1738 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1739 , ReturnProbe); \
1740 \
1741 JNI_ENTRY(ResultType, \
1742 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1743 JNIWrapper("Call" XSTR(Result) "Method"); \
1744 \
1745 EntryProbe; \
1746 ResultType ret = 0;\
1747 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1748 (const ResultType&)ret);\
1749 \
1750 va_list args; \
1751 va_start(args, methodID); \
1752 JavaValue jvalue(Tag); \
1753 JNI_ArgumentPusherVaArg ap(methodID, args); \
1754 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1755 va_end(args); \
1756 ret = jvalue.get_##ResultType(); \
1757 return ret;\
1758 JNI_END
1759
1760 // the runtime type of subword integral basic types is integer
1761 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1762 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1763 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1764 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1765 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1766 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1767 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1768 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1769 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1770 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1771 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1772 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1773
1774 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1775 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1776 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1777 DEFINE_CALLMETHOD(jint, Int, T_INT,
1778 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1779 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1780 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1781 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1782 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1783 // Float and double probes don't return value because dtrace doesn't currently support it
1784 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1785 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1786 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1787 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1788 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1789 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1790
1791 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1792 , EntryProbe, ReturnProbe) \
1793 \
1794 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1795 , ReturnProbe); \
1796 \
1797 JNI_ENTRY(ResultType, \
1798 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1799 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1800 \
1801 EntryProbe;\
1802 ResultType ret = 0;\
1803 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1804 (const ResultType&)ret);\
1805 \
1806 JavaValue jvalue(Tag); \
1807 JNI_ArgumentPusherVaArg ap(methodID, args); \
1808 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1809 ret = jvalue.get_##ResultType(); \
1810 return ret;\
1811 JNI_END
1812
1813 // the runtime type of subword integral basic types is integer
1814 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1815 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1816 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1817 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1818 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1819 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1820 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1821 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1822 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1823 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1824 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1825 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1826
1827 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1828 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1829 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1830 DEFINE_CALLMETHODV(jint, Int, T_INT,
1831 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1832 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1833 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1834 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1835 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1836 // Float and double probes don't return value because dtrace doesn't currently support it
1837 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1838 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1839 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1840 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1841 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1842 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1843
1844 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1845 , EntryProbe, ReturnProbe) \
1846 \
1847 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1848 , ReturnProbe); \
1849 \
1850 JNI_ENTRY(ResultType, \
1851 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1852 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1853 EntryProbe; \
1854 ResultType ret = 0;\
1855 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1856 (const ResultType&)ret);\
1857 \
1858 JavaValue jvalue(Tag); \
1859 JNI_ArgumentPusherArray ap(methodID, args); \
1860 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1861 ret = jvalue.get_##ResultType(); \
1862 return ret;\
1863 JNI_END
1864
1865 // the runtime type of subword integral basic types is integer
1866 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1867 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1868 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1869 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1870 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1871 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1872 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1873 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1874 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1875 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1876 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1877 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1878
1879 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1880 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1881 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1882 DEFINE_CALLMETHODA(jint, Int, T_INT,
1883 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1884 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1885 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1886 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1887 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1888 // Float and double probes don't return value because dtrace doesn't currently support it
1889 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1890 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1891 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1892 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1893 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1894 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1895
1896 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1897 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1898 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1899
1900 #endif /* USDT2 */
1901
1902 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1903 JNIWrapper("CallVoidMethod");
1904 #ifndef USDT2
1905 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1906 #else /* USDT2 */
1907 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1908 env, obj, (uintptr_t) methodID);
1909 #endif /* USDT2 */
1910 DT_VOID_RETURN_MARK(CallVoidMethod);
1911
1912 va_list args;
1913 va_start(args, methodID);
1914 JavaValue jvalue(T_VOID);
1915 JNI_ArgumentPusherVaArg ap(methodID, args);
1916 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1917 va_end(args);
1918 JNI_END
1919
1920
1921 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1922 JNIWrapper("CallVoidMethodV");
1923 #ifndef USDT2
1924 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1925 #else /* USDT2 */
1926 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1927 env, obj, (uintptr_t) methodID);
1928 #endif /* USDT2 */
1929 DT_VOID_RETURN_MARK(CallVoidMethodV);
1930
1931 JavaValue jvalue(T_VOID);
1932 JNI_ArgumentPusherVaArg ap(methodID, args);
1933 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1934 JNI_END
1935
1936
1937 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1938 JNIWrapper("CallVoidMethodA");
1939 #ifndef USDT2
1940 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1941 #else /* USDT2 */
1942 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1943 env, obj, (uintptr_t) methodID);
1944 #endif /* USDT2 */
1945 DT_VOID_RETURN_MARK(CallVoidMethodA);
1946
1947 JavaValue jvalue(T_VOID);
1948 JNI_ArgumentPusherArray ap(methodID, args);
1949 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1950 JNI_END
1951
1952
1953 #ifndef USDT2
1954 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1955 \
1956 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1957 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1958 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1959 \
1960 JNI_ENTRY(ResultType, \
1961 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1962 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1963 \
1964 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1965 ResultType ret;\
1966 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1967 (const ResultType&)ret);\
1968 \
1969 va_list args; \
1970 va_start(args, methodID); \
1971 JavaValue jvalue(Tag); \
1972 JNI_ArgumentPusherVaArg ap(methodID, args); \
1973 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1974 va_end(args); \
1975 ret = jvalue.get_##ResultType(); \
1976 return ret;\
1977 JNI_END \
1978 \
1979 JNI_ENTRY(ResultType, \
1980 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1981 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1982 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1983 ResultType ret;\
1984 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1985 (const ResultType&)ret);\
1986 \
1987 JavaValue jvalue(Tag); \
1988 JNI_ArgumentPusherVaArg ap(methodID, args); \
1989 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1990 ret = jvalue.get_##ResultType(); \
1991 return ret;\
1992 JNI_END \
1993 \
1994 JNI_ENTRY(ResultType, \
1995 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1996 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1997 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1998 ResultType ret;\
1999 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2000 (const ResultType&)ret);\
2001 \
2002 JavaValue jvalue(Tag); \
2003 JNI_ArgumentPusherArray ap(methodID, args); \
2004 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2005 ret = jvalue.get_##ResultType(); \
2006 return ret;\
2007 JNI_END
2008
2009 // the runtime type of subword integral basic types is integer
2010 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2011 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2012 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2013 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2014
2015 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2016 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2017 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2018 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2019 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2020
2021
2022 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2023 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2024 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2025
2026 #else /* USDT2 */
2027
2028 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2029 , EntryProbe, ReturnProbe) \
2030 \
2031 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2032 , ReturnProbe);\
2033 \
2034 JNI_ENTRY(ResultType, \
2035 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2036 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2037 \
2038 EntryProbe;\
2039 ResultType ret;\
2040 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2041 (const ResultType&)ret);\
2042 \
2043 va_list args; \
2044 va_start(args, methodID); \
2045 JavaValue jvalue(Tag); \
2046 JNI_ArgumentPusherVaArg ap(methodID, args); \
2047 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2048 va_end(args); \
2049 ret = jvalue.get_##ResultType(); \
2050 return ret;\
2051 JNI_END
2052
2053 // the runtime type of subword integral basic types is integer
2054 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2055 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2056 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2057 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2058 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2059 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2060 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2061 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2062 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2063 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2064 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2065 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2066
2067 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2068 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2069 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2070 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2071 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2072 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2073 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2074 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2075 // Float and double probes don't return value because dtrace doesn't currently support it
2076 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2077 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2078 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2079 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2080 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2081 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2082 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2083
2084 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2085 , EntryProbe, ReturnProbe) \
2086 \
2087 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2088 , ReturnProbe);\
2089 \
2090 JNI_ENTRY(ResultType, \
2091 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2092 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2093 \
2094 EntryProbe;\
2095 ResultType ret;\
2096 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2097 (const ResultType&)ret);\
2098 \
2099 JavaValue jvalue(Tag); \
2100 JNI_ArgumentPusherVaArg ap(methodID, args); \
2101 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2102 ret = jvalue.get_##ResultType(); \
2103 return ret;\
2104 JNI_END
2105
2106 // the runtime type of subword integral basic types is integer
2107 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2108 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2109 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2110 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2111 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2112 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2113 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2114 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2115 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2116 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2117 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2118 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2119
2120 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2121 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2122 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2123 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2124 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2125 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2126 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2127 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2128 // Float and double probes don't return value because dtrace doesn't currently support it
2129 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2130 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2131 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2132 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2133 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2134 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2135 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2136
2137 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2138 , EntryProbe, ReturnProbe) \
2139 \
2140 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2141 , ReturnProbe);\
2142 \
2143 JNI_ENTRY(ResultType, \
2144 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2145 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2146 \
2147 EntryProbe;\
2148 ResultType ret;\
2149 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2150 (const ResultType&)ret);\
2151 \
2152 JavaValue jvalue(Tag); \
2153 JNI_ArgumentPusherArray ap(methodID, args); \
2154 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2155 ret = jvalue.get_##ResultType(); \
2156 return ret;\
2157 JNI_END
2158
2159 // the runtime type of subword integral basic types is integer
2160 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2161 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2162 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2163 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2164 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2165 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2166 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2167 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2168 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2169 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2170 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2171 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2172
2173 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2174 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2175 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2176 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2177 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2178 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2179 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2180 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2181 // Float and double probes don't return value because dtrace doesn't currently support it
2182 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2183 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2184 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2185 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2186 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2187 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2188 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2189
2190 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2191 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2192 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2193 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2194 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2195 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2196 #endif /* USDT2 */
2197
2198 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2199 JNIWrapper("CallNonvirtualVoidMethod");
2200
2201 #ifndef USDT2
2202 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2203 env, obj, cls, methodID);
2204 #else /* USDT2 */
2205 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2206 env, obj, cls, (uintptr_t) methodID);
2207 #endif /* USDT2 */
2208 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2209
2210 va_list args;
2211 va_start(args, methodID);
2212 JavaValue jvalue(T_VOID);
2213 JNI_ArgumentPusherVaArg ap(methodID, args);
2214 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2215 va_end(args);
2216 JNI_END
2217
2218
2219 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2220 JNIWrapper("CallNonvirtualVoidMethodV");
2221
2222 #ifndef USDT2
2223 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2224 env, obj, cls, methodID);
2225 #else /* USDT2 */
2226 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2227 env, obj, cls, (uintptr_t) methodID);
2228 #endif /* USDT2 */
2229 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2230
2231 JavaValue jvalue(T_VOID);
2232 JNI_ArgumentPusherVaArg ap(methodID, args);
2233 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2234 JNI_END
2235
2236
2237 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2238 JNIWrapper("CallNonvirtualVoidMethodA");
2239 #ifndef USDT2
2240 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2241 env, obj, cls, methodID);
2242 #else /* USDT2 */
2243 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2244 env, obj, cls, (uintptr_t) methodID);
2245 #endif /* USDT2 */
2246 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2247 JavaValue jvalue(T_VOID);
2248 JNI_ArgumentPusherArray ap(methodID, args);
2249 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2250 JNI_END
2251
2252
2253 #ifndef USDT2
2254 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2255 \
2256 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2257 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2258 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2259 \
2260 JNI_ENTRY(ResultType, \
2261 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2262 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2263 \
2264 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2265 ResultType ret = 0;\
2266 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2267 (const ResultType&)ret);\
2268 \
2269 va_list args; \
2270 va_start(args, methodID); \
2271 JavaValue jvalue(Tag); \
2272 JNI_ArgumentPusherVaArg ap(methodID, args); \
2273 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2274 va_end(args); \
2275 ret = jvalue.get_##ResultType(); \
2276 return ret;\
2277 JNI_END \
2278 \
2279 JNI_ENTRY(ResultType, \
2280 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2281 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2282 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2283 ResultType ret = 0;\
2284 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2285 (const ResultType&)ret);\
2286 \
2287 JavaValue jvalue(Tag); \
2288 JNI_ArgumentPusherVaArg ap(methodID, args); \
2289 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2290 ret = jvalue.get_##ResultType(); \
2291 return ret;\
2292 JNI_END \
2293 \
2294 JNI_ENTRY(ResultType, \
2295 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2296 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2297 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2298 ResultType ret = 0;\
2299 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2300 (const ResultType&)ret);\
2301 \
2302 JavaValue jvalue(Tag); \
2303 JNI_ArgumentPusherArray ap(methodID, args); \
2304 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2305 ret = jvalue.get_##ResultType(); \
2306 return ret;\
2307 JNI_END
2308
2309 // the runtime type of subword integral basic types is integer
2310 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2311 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2312 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2313 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2314
2315 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2316 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2317 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2318 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2319 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2320
2321
2322 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2323 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2324 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2325
2326 #else /* USDT2 */
2327
2328 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2329 , EntryProbe, ResultProbe) \
2330 \
2331 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2332 , ResultProbe); \
2333 \
2334 JNI_ENTRY(ResultType, \
2335 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2336 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2337 \
2338 EntryProbe; \
2339 ResultType ret = 0;\
2340 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2341 (const ResultType&)ret);\
2342 \
2343 va_list args; \
2344 va_start(args, methodID); \
2345 JavaValue jvalue(Tag); \
2346 JNI_ArgumentPusherVaArg ap(methodID, args); \
2347 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2348 va_end(args); \
2349 ret = jvalue.get_##ResultType(); \
2350 return ret;\
2351 JNI_END
2352
2353 // the runtime type of subword integral basic types is integer
2354 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2355 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2356 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2357 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2358 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2359 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2360 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2361 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2362 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2363 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2364 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2365 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2366
2367 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2368 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2369 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2370 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2371 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2372 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2373 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2374 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2375 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2376 // Float and double probes don't return value because dtrace doesn't currently support it
2377 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2378 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2379 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2380 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2381 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2382 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2383
2384 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2385 , EntryProbe, ResultProbe) \
2386 \
2387 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2388 , ResultProbe); \
2389 \
2390 JNI_ENTRY(ResultType, \
2391 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2392 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2393 \
2394 EntryProbe; \
2395 ResultType ret = 0;\
2396 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2397 (const ResultType&)ret);\
2398 \
2399 JavaValue jvalue(Tag); \
2400 JNI_ArgumentPusherVaArg ap(methodID, args); \
2401 /* Make sure class is initialized before trying to invoke its method */ \
2402 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2403 Klass::cast(k())->initialize(CHECK_0); \
2404 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2405 va_end(args); \
2406 ret = jvalue.get_##ResultType(); \
2407 return ret;\
2408 JNI_END
2409
2410 // the runtime type of subword integral basic types is integer
2411 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2412 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2413 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2414 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2415 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2416 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2417 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2418 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2419 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2420 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2421 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2422 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2423
2424 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2425 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2426 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2427 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2428 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2429 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2430 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2431 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2432 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2433 // Float and double probes don't return value because dtrace doesn't currently support it
2434 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2435 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2436 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2437 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2438 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2439 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2440
2441 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2442 , EntryProbe, ResultProbe) \
2443 \
2444 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2445 , ResultProbe); \
2446 \
2447 JNI_ENTRY(ResultType, \
2448 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2449 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2450 \
2451 EntryProbe; \
2452 ResultType ret = 0;\
2453 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2454 (const ResultType&)ret);\
2455 \
2456 JavaValue jvalue(Tag); \
2457 JNI_ArgumentPusherArray ap(methodID, args); \
2458 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2459 ret = jvalue.get_##ResultType(); \
2460 return ret;\
2461 JNI_END
2462
2463 // the runtime type of subword integral basic types is integer
2464 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2465 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2466 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2467 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2468 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2469 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2470 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2471 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2472 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2473 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2474 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2475 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2476
2477 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2478 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2479 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2480 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2481 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2482 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2483 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2484 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2485 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2486 // Float and double probes don't return value because dtrace doesn't currently support it
2487 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2488 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2489 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2490 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2491 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2492 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2493
2494 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2495 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2496 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2497 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2498 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2499 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2500 #endif /* USDT2 */
2501
2502 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2503 JNIWrapper("CallStaticVoidMethod");
2504 #ifndef USDT2
2505 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2506 #else /* USDT2 */
2507 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2508 env, cls, (uintptr_t) methodID);
2509 #endif /* USDT2 */
2510 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2511
2512 va_list args;
2513 va_start(args, methodID);
2514 JavaValue jvalue(T_VOID);
2515 JNI_ArgumentPusherVaArg ap(methodID, args);
2516 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2517 va_end(args);
2518 JNI_END
2519
2520
2521 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2522 JNIWrapper("CallStaticVoidMethodV");
2523 #ifndef USDT2
2524 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2525 #else /* USDT2 */
2526 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2527 env, cls, (uintptr_t) methodID);
2528 #endif /* USDT2 */
2529 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2530
2531 JavaValue jvalue(T_VOID);
2532 JNI_ArgumentPusherVaArg ap(methodID, args);
2533 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2534 JNI_END
2535
2536
2537 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2538 JNIWrapper("CallStaticVoidMethodA");
2539 #ifndef USDT2
2540 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2541 #else /* USDT2 */
2542 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2543 env, cls, (uintptr_t) methodID);
2544 #endif /* USDT2 */
2545 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2546
2547 JavaValue jvalue(T_VOID);
2548 JNI_ArgumentPusherArray ap(methodID, args);
2549 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2550 JNI_END
2551
2552
2553 //
2554 // Accessing Fields
2555 //
2556
2557
2558 #ifndef USDT2
2559 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2560 #else /* USDT2 */
2561 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2562 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2563 #endif /* USDT2 */
2564
2565 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2566 const char *name, const char *sig))
2567 JNIWrapper("GetFieldID");
2568 #ifndef USDT2
2569 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2570 #else /* USDT2 */
2571 HOTSPOT_JNI_GETFIELDID_ENTRY(
2572 env, clazz, (char *) name, (char *) sig);
2573 #endif /* USDT2 */
2574 jfieldID ret = 0;
2575 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2576
2577 // The class should have been loaded (we have an instance of the class
2578 // passed in) so the field and signature should already be in the symbol
2579 // table. If they're not there, the field doesn't exist.
2580 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2581 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2582 if (fieldname == NULL || signame == NULL) {
2583 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2584 }
2585 KlassHandle k(THREAD,
2586 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2587 // Make sure class is initialized before handing id's out to fields
2588 Klass::cast(k())->initialize(CHECK_NULL);
2589
2590 fieldDescriptor fd;
2591 if (!Klass::cast(k())->oop_is_instance() ||
2592 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2593 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2594 }
2595
2596 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2597 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2598 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2599 return ret;
2600 JNI_END
2601
2602
2603 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2604 JNIWrapper("GetObjectField");
2605 #ifndef USDT2
2606 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2607 #else /* USDT2 */
2608 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2609 env, obj, (uintptr_t) fieldID);
2610 #endif /* USDT2 */
2611 oop o = JNIHandles::resolve_non_null(obj);
2612 Klass* k = o->klass();
2613 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2614 // Keep JVMTI addition small and only check enabled flag here.
2615 // jni_GetField_probe() assumes that is okay to create handles.
2616 if (JvmtiExport::should_post_field_access()) {
2617 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2618 }
2619 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2620 #ifndef SERIALGC
2621 // If G1 is enabled and we are accessing the value of the referent
2622 // field in a reference object then we need to register a non-null
2623 // referent with the SATB barrier.
2624 if (UseG1GC) {
2625 bool needs_barrier = false;
2626
2627 if (ret != NULL &&
2628 offset == java_lang_ref_Reference::referent_offset &&
2629 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2630 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2631 needs_barrier = true;
2632 }
2633
2634 if (needs_barrier) {
2635 oop referent = JNIHandles::resolve(ret);
2636 G1SATBCardTableModRefBS::enqueue(referent);
2637 }
2638 }
2639 #endif // SERIALGC
2640 #ifndef USDT2
2641 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2642 #else /* USDT2 */
2643 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2644 ret);
2645 #endif /* USDT2 */
2646 return ret;
2647 JNI_END
2648
2649
2650 #ifndef USDT2
2651 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2652 \
2653 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2654 \
2655 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2656 JNIWrapper("Get" XSTR(Result) "Field"); \
2657 \
2658 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2659 Return ret = 0;\
2660 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2661 \
2662 oop o = JNIHandles::resolve_non_null(obj); \
2663 Klass* k = o->klass(); \
2664 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2665 /* Keep JVMTI addition small and only check enabled flag here. */ \
2666 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2667 /* and creates a ResetNoHandleMark. */ \
2668 if (JvmtiExport::should_post_field_access()) { \
2669 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2670 } \
2671 ret = o->Fieldname##_field(offset); \
2672 return ret; \
2673 JNI_END
2674
2675 DEFINE_GETFIELD(jboolean, bool, Boolean)
2676 DEFINE_GETFIELD(jbyte, byte, Byte)
2677 DEFINE_GETFIELD(jchar, char, Char)
2678 DEFINE_GETFIELD(jshort, short, Short)
2679 DEFINE_GETFIELD(jint, int, Int)
2680 DEFINE_GETFIELD(jlong, long, Long)
2681 DEFINE_GETFIELD(jfloat, float, Float)
2682 DEFINE_GETFIELD(jdouble, double, Double)
2683
2684 #else /* USDT2 */
2685
2686 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2687 , EntryProbe, ReturnProbe) \
2688 \
2689 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2690 , ReturnProbe); \
2691 \
2692 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2693 JNIWrapper("Get" XSTR(Result) "Field"); \
2694 \
2695 EntryProbe; \
2696 Return ret = 0;\
2697 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2698 \
2699 oop o = JNIHandles::resolve_non_null(obj); \
2700 Klass* k = o->klass(); \
2701 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2702 /* Keep JVMTI addition small and only check enabled flag here. */ \
2703 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2704 /* and creates a ResetNoHandleMark. */ \
2705 if (JvmtiExport::should_post_field_access()) { \
2706 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2707 } \
2708 ret = o->Fieldname##_field(offset); \
2709 return ret; \
2710 JNI_END
2711
2712 DEFINE_GETFIELD(jboolean, bool, Boolean
2713 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2714 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2715 DEFINE_GETFIELD(jbyte, byte, Byte
2716 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2717 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2718 DEFINE_GETFIELD(jchar, char, Char
2719 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2720 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2721 DEFINE_GETFIELD(jshort, short, Short
2722 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2723 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2724 DEFINE_GETFIELD(jint, int, Int
2725 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2726 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2727 DEFINE_GETFIELD(jlong, long, Long
2728 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2729 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2730 // Float and double probes don't return value because dtrace doesn't currently support it
2731 DEFINE_GETFIELD(jfloat, float, Float
2732 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2733 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2734 DEFINE_GETFIELD(jdouble, double, Double
2735 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2736 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2737 #endif /* USDT2 */
2738
2739 address jni_GetBooleanField_addr() {
2740 return (address)jni_GetBooleanField;
2741 }
2742 address jni_GetByteField_addr() {
2743 return (address)jni_GetByteField;
2744 }
2745 address jni_GetCharField_addr() {
2746 return (address)jni_GetCharField;
2747 }
2748 address jni_GetShortField_addr() {
2749 return (address)jni_GetShortField;
2750 }
2751 address jni_GetIntField_addr() {
2752 return (address)jni_GetIntField;
2753 }
2754 address jni_GetLongField_addr() {
2755 return (address)jni_GetLongField;
2756 }
2757 address jni_GetFloatField_addr() {
2758 return (address)jni_GetFloatField;
2759 }
2760 address jni_GetDoubleField_addr() {
2761 return (address)jni_GetDoubleField;
2762 }
2763
2764 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2765 JNIWrapper("SetObjectField");
2766 #ifndef USDT2
2767 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2768 #else /* USDT2 */
2769 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2770 env, obj, (uintptr_t) fieldID, value);
2771 #endif /* USDT2 */
2772 oop o = JNIHandles::resolve_non_null(obj);
2773 Klass* k = o->klass();
2774 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2775 // Keep JVMTI addition small and only check enabled flag here.
2776 // jni_SetField_probe_nh() assumes that is not okay to create handles
2777 // and creates a ResetNoHandleMark.
2778 if (JvmtiExport::should_post_field_modification()) {
2779 jvalue field_value;
2780 field_value.l = value;
2781 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2782 }
2783 o->obj_field_put(offset, JNIHandles::resolve(value));
2784 #ifndef USDT2
2785 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2786 #else /* USDT2 */
2787 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2788 );
2789 #endif /* USDT2 */
2790 JNI_END
2791
2792 #ifndef USDT2
2793 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2794 \
2795 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2796 JNIWrapper("Set" XSTR(Result) "Field"); \
2797 \
2798 FP_SELECT_##Result( \
2799 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2800 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2801 \
2802 oop o = JNIHandles::resolve_non_null(obj); \
2803 Klass* k = o->klass(); \
2804 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2805 /* Keep JVMTI addition small and only check enabled flag here. */ \
2806 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2807 /* and creates a ResetNoHandleMark. */ \
2808 if (JvmtiExport::should_post_field_modification()) { \
2809 jvalue field_value; \
2810 field_value.unionType = value; \
2811 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2812 } \
2813 o->Fieldname##_field_put(offset, value); \
2814 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2815 JNI_END
2816
2817 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2818 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2819 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2820 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2821 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2822 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2823 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2824 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2825
2826 #else /* USDT2 */
2827
2828 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2829 , EntryProbe, ReturnProbe) \
2830 \
2831 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2832 JNIWrapper("Set" XSTR(Result) "Field"); \
2833 \
2834 EntryProbe; \
2835 \
2836 oop o = JNIHandles::resolve_non_null(obj); \
2837 Klass* k = o->klass(); \
2838 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2839 /* Keep JVMTI addition small and only check enabled flag here. */ \
2840 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2841 /* and creates a ResetNoHandleMark. */ \
2842 if (JvmtiExport::should_post_field_modification()) { \
2843 jvalue field_value; \
2844 field_value.unionType = value; \
2845 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2846 } \
2847 o->Fieldname##_field_put(offset, value); \
2848 ReturnProbe; \
2849 JNI_END
2850
2851 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2852 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2853 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2854 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2855 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2856 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2857 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2858 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2859 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2860 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2861 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2862 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2863 DEFINE_SETFIELD(jint, int, Int, 'I', i
2864 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2865 HOTSPOT_JNI_SETINTFIELD_RETURN())
2866 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2867 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2868 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2869 // Float and double probes don't return value because dtrace doesn't currently support it
2870 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2871 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2872 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2873 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2874 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2875 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2876 #endif /* USDT2 */
2877
2878 #ifndef USDT2
2879 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2880 #else /* USDT2 */
2881 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2882 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2883 #endif /* USDT2 */
2884
2885 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2886 JNIWrapper("ToReflectedField");
2887 #ifndef USDT2
2888 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2889 env, cls, fieldID, isStatic);
2890 #else /* USDT2 */
2891 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2892 env, cls, (uintptr_t) fieldID, isStatic);
2893 #endif /* USDT2 */
2894 jobject ret = NULL;
2895 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2896
2897 fieldDescriptor fd;
2898 bool found = false;
2899 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2900
2901 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2902
2903 if (isStatic) {
2904 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2905 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2906 assert(id->is_static_field_id(), "invalid static field id");
2907 found = id->find_local_field(&fd);
2908 } else {
2909 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2910 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2911 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2912 }
2913 assert(found, "bad fieldID passed into jni_ToReflectedField");
2914 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2915 ret = JNIHandles::make_local(env, reflected);
2916 return ret;
2917 JNI_END
2918
2919
2920 //
2921 // Accessing Static Fields
2922 //
2923 #ifndef USDT2
2924 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2925 #else /* USDT2 */
2926 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2927 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2928 #endif /* USDT2 */
2929
2930 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2931 const char *name, const char *sig))
2932 JNIWrapper("GetStaticFieldID");
2933 #ifndef USDT2
2934 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2935 #else /* USDT2 */
2936 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2937 env, clazz, (char *) name, (char *) sig);
2938 #endif /* USDT2 */
2939 jfieldID ret = NULL;
2940 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2941
2942 // The class should have been loaded (we have an instance of the class
2943 // passed in) so the field and signature should already be in the symbol
2944 // table. If they're not there, the field doesn't exist.
2945 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2946 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2947 if (fieldname == NULL || signame == NULL) {
2948 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2949 }
2950 KlassHandle k(THREAD,
2951 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2952 // Make sure class is initialized before handing id's out to static fields
2953 Klass::cast(k())->initialize(CHECK_NULL);
2954
2955 fieldDescriptor fd;
2956 if (!Klass::cast(k())->oop_is_instance() ||
2957 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2958 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2959 }
2960
2961 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2962 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2963 debug_only(id->set_is_static_field_id();)
2964
2965 debug_only(id->verify(fd.field_holder()));
2966
2967 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2968 return ret;
2969 JNI_END
2970
2971
2972 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2973 JNIWrapper("GetStaticObjectField");
2974 #ifndef USDT2
2975 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2976 #else /* USDT2 */
2977 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2978 env, clazz, (uintptr_t) fieldID);
2979 #endif /* USDT2 */
2980 #if INCLUDE_JNI_CHECK
2981 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2982 #endif // INCLUDE_JNI_CHECK
2983 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2984 assert(id->is_static_field_id(), "invalid static field id");
2985 // Keep JVMTI addition small and only check enabled flag here.
2986 // jni_GetField_probe() assumes that is okay to create handles.
2987 if (JvmtiExport::should_post_field_access()) {
2988 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2989 }
2990 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2991 #ifndef USDT2
2992 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2993 #else /* USDT2 */
2994 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2995 ret);
2996 #endif /* USDT2 */
2997 return ret;
2998 JNI_END
2999
3000 #ifndef USDT2
3001 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3002 \
3003 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3004 \
3005 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3006 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3007 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3008 Return ret = 0;\
3009 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3010 (const Return&)ret);\
3011 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3012 assert(id->is_static_field_id(), "invalid static field id"); \
3013 /* Keep JVMTI addition small and only check enabled flag here. */ \
3014 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3015 if (JvmtiExport::should_post_field_access()) { \
3016 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3017 } \
3018 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3019 return ret;\
3020 JNI_END
3021
3022 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3023 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3024 DEFINE_GETSTATICFIELD(jchar, char, Char)
3025 DEFINE_GETSTATICFIELD(jshort, short, Short)
3026 DEFINE_GETSTATICFIELD(jint, int, Int)
3027 DEFINE_GETSTATICFIELD(jlong, long, Long)
3028 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3029 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3030
3031 #else /* USDT2 */
3032
3033 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3034 , EntryProbe, ReturnProbe) \
3035 \
3036 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3037 , ReturnProbe); \
3038 \
3039 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3040 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3041 EntryProbe; \
3042 Return ret = 0;\
3043 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3044 (const Return&)ret);\
3045 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3046 assert(id->is_static_field_id(), "invalid static field id"); \
3047 /* Keep JVMTI addition small and only check enabled flag here. */ \
3048 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3049 if (JvmtiExport::should_post_field_access()) { \
3050 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3051 } \
3052 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3053 return ret;\
3054 JNI_END
3055
3056 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3057 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3058 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3059 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3060 DEFINE_GETSTATICFIELD(jchar, char, Char
3061 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3062 DEFINE_GETSTATICFIELD(jshort, short, Short
3063 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3064 DEFINE_GETSTATICFIELD(jint, int, Int
3065 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3066 DEFINE_GETSTATICFIELD(jlong, long, Long
3067 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3068 // Float and double probes don't return value because dtrace doesn't currently support it
3069 DEFINE_GETSTATICFIELD(jfloat, float, Float
3070 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3071 DEFINE_GETSTATICFIELD(jdouble, double, Double
3072 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3073 #endif /* USDT2 */
3074
3075 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3076 JNIWrapper("SetStaticObjectField");
3077 #ifndef USDT2
3078 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3079 #else /* USDT2 */
3080 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3081 env, clazz, (uintptr_t) fieldID, value);
3082 #endif /* USDT2 */
3083 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3084 assert(id->is_static_field_id(), "invalid static field id");
3085 // Keep JVMTI addition small and only check enabled flag here.
3086 // jni_SetField_probe() assumes that is okay to create handles.
3087 if (JvmtiExport::should_post_field_modification()) {
3088 jvalue field_value;
3089 field_value.l = value;
3090 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3091 }
3092 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3093 #ifndef USDT2
3094 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3095 #else /* USDT2 */
3096 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3097 );
3098 #endif /* USDT2 */
3099 JNI_END
3100
3101
3102 #ifndef USDT2
3103 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3104 \
3105 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3106 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3107 FP_SELECT_##Result( \
3108 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3109 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3110 \
3111 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3112 assert(id->is_static_field_id(), "invalid static field id"); \
3113 /* Keep JVMTI addition small and only check enabled flag here. */ \
3114 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3115 if (JvmtiExport::should_post_field_modification()) { \
3116 jvalue field_value; \
3117 field_value.unionType = value; \
3118 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3119 } \
3120 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3121 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3122 JNI_END
3123
3124 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3125 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3126 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3127 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3128 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3129 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3130 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3131 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3132
3133 #else /* USDT2 */
3134
3135 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3136 , EntryProbe, ReturnProbe) \
3137 \
3138 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3139 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3140 EntryProbe; \
3141 \
3142 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3143 assert(id->is_static_field_id(), "invalid static field id"); \
3144 /* Keep JVMTI addition small and only check enabled flag here. */ \
3145 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3146 if (JvmtiExport::should_post_field_modification()) { \
3147 jvalue field_value; \
3148 field_value.unionType = value; \
3149 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3150 } \
3151 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3152 ReturnProbe;\
3153 JNI_END
3154
3155 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3156 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3157 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3158 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3159 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3160 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3161 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3162 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3163 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3164 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3165 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3166 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3167 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3168 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3169 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3170 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3171 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3172 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3173 // Float and double probes don't return value because dtrace doesn't currently support it
3174 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3175 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3176 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3177 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3178 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3179 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3180 #endif /* USDT2 */
3181
3182 //
3183 // String Operations
3184 //
3185
3186 // Unicode Interface
3187
3188 #ifndef USDT2
3189 DT_RETURN_MARK_DECL(NewString, jstring);
3190 #else /* USDT2 */
3191 DT_RETURN_MARK_DECL(NewString, jstring
3192 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3193 #endif /* USDT2 */
3194
3195 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3196 JNIWrapper("NewString");
3197 #ifndef USDT2
3198 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3199 #else /* USDT2 */
3200 HOTSPOT_JNI_NEWSTRING_ENTRY(
3201 env, (uint16_t *) unicodeChars, len);
3202 #endif /* USDT2 */
3203 jstring ret = NULL;
3204 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3205 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3206 ret = (jstring) JNIHandles::make_local(env, string);
3207 return ret;
3208 JNI_END
3209
3210
3211 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3212 JNIWrapper("GetStringLength");
3213 #ifndef USDT2
3214 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3215 #else /* USDT2 */
3216 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3217 env, string);
3218 #endif /* USDT2 */
3219 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3220 #ifndef USDT2
3221 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3222 #else /* USDT2 */
3223 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3224 ret);
3225 #endif /* USDT2 */
3226 return ret;
3227 JNI_END
3228
3229
3230 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3231 JNIEnv *env, jstring string, jboolean *isCopy))
3232 JNIWrapper("GetStringChars");
3233 #ifndef USDT2
3234 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3235 #else /* USDT2 */
3236 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3237 env, string, (uintptr_t *) isCopy);
3238 #endif /* USDT2 */
3239 //%note jni_5
3240 if (isCopy != NULL) {
3241 *isCopy = JNI_TRUE;
3242 }
3243 oop s = JNIHandles::resolve_non_null(string);
3244 int s_len = java_lang_String::length(s);
3245 typeArrayOop s_value = java_lang_String::value(s);
3246 int s_offset = java_lang_String::offset(s);
3247 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3248 if (s_len > 0) {
3249 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3250 }
3251 buf[s_len] = 0;
3252 #ifndef USDT2
3253 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3254 #else /* USDT2 */
3255 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3256 buf);
3257 #endif /* USDT2 */
3258 return buf;
3259 JNI_END
3260
3261
3262 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3263 JNIWrapper("ReleaseStringChars");
3264 #ifndef USDT2
3265 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3266 #else /* USDT2 */
3267 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3268 env, str, (uint16_t *) chars);
3269 #endif /* USDT2 */
3270 //%note jni_6
3271 if (chars != NULL) {
3272 // Since String objects are supposed to be immutable, don't copy any
3273 // new data back. A bad user will have to go after the char array.
3274 FreeHeap((void*) chars);
3275 }
3276 #ifndef USDT2
3277 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3278 #else /* USDT2 */
3279 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3280 );
3281 #endif /* USDT2 */
3282 JNI_END
3283
3284
3285 // UTF Interface
3286
3287 #ifndef USDT2
3288 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3289 #else /* USDT2 */
3290 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3291 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3292 #endif /* USDT2 */
3293
3294 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3295 JNIWrapper("NewStringUTF");
3296 #ifndef USDT2
3297 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3298 #else /* USDT2 */
3299 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3300 env, (char *) bytes);
3301 #endif /* USDT2 */
3302 jstring ret;
3303 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3304
3305 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3306 ret = (jstring) JNIHandles::make_local(env, result);
3307 return ret;
3308 JNI_END
3309
3310
3311 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3312 JNIWrapper("GetStringUTFLength");
3313 #ifndef USDT2
3314 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3315 #else /* USDT2 */
3316 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3317 env, string);
3318 #endif /* USDT2 */
3319 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3320 #ifndef USDT2
3321 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3322 #else /* USDT2 */
3323 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3324 ret);
3325 #endif /* USDT2 */
3326 return ret;
3327 JNI_END
3328
3329
3330 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3331 JNIWrapper("GetStringUTFChars");
3332 #ifndef USDT2
3333 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3334 #else /* USDT2 */
3335 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3336 env, string, (uintptr_t *) isCopy);
3337 #endif /* USDT2 */
3338 oop java_string = JNIHandles::resolve_non_null(string);
3339 size_t length = java_lang_String::utf8_length(java_string);
3340 char* result = AllocateHeap(length + 1, mtInternal);
3341 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3342 if (isCopy != NULL) *isCopy = JNI_TRUE;
3343 #ifndef USDT2
3344 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3345 #else /* USDT2 */
3346 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3347 result);
3348 #endif /* USDT2 */
3349 return result;
3350 JNI_END
3351
3352
3353 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3354 JNIWrapper("ReleaseStringUTFChars");
3355 #ifndef USDT2
3356 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3357 #else /* USDT2 */
3358 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3359 env, str, (char *) chars);
3360 #endif /* USDT2 */
3361 if (chars != NULL) {
3362 FreeHeap((char*) chars);
3363 }
3364 #ifndef USDT2
3365 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3366 #else /* USDT2 */
3367 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3368 );
3369 #endif /* USDT2 */
3370 JNI_END
3371
3372
3373 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3374 JNIWrapper("GetArrayLength");
3375 #ifndef USDT2
3376 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3377 #else /* USDT2 */
3378 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3379 env, array);
3380 #endif /* USDT2 */
3381 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3382 assert(a->is_array(), "must be array");
3383 jsize ret = a->length();
3384 #ifndef USDT2
3385 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3386 #else /* USDT2 */
3387 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3388 ret);
3389 #endif /* USDT2 */
3390 return ret;
3391 JNI_END
3392
3393
3394 //
3395 // Object Array Operations
3396 //
3397
3398 #ifndef USDT2
3399 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3400 #else /* USDT2 */
3401 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3402 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3403 #endif /* USDT2 */
3404
3405 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3406 JNIWrapper("NewObjectArray");
3407 #ifndef USDT2
3408 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3409 #else /* USDT2 */
3410 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3411 env, length, elementClass, initialElement);
3412 #endif /* USDT2 */
3413 jobjectArray ret = NULL;
3414 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3415 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3416 Klass* ako = Klass::cast(ek())->array_klass(CHECK_NULL);
3417 KlassHandle ak = KlassHandle(THREAD, ako);
3418 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3419 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3420 oop initial_value = JNIHandles::resolve(initialElement);
3421 if (initial_value != NULL) { // array already initialized with NULL
3422 for (int index = 0; index < length; index++) {
3423 result->obj_at_put(index, initial_value);
3424 }
3425 }
3426 ret = (jobjectArray) JNIHandles::make_local(env, result);
3427 return ret;
3428 JNI_END
3429
3430 #ifndef USDT2
3431 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3432 #else /* USDT2 */
3433 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3434 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3435 #endif /* USDT2 */
3436
3437 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3438 JNIWrapper("GetObjectArrayElement");
3439 #ifndef USDT2
3440 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3441 #else /* USDT2 */
3442 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3443 env, array, index);
3444 #endif /* USDT2 */
3445 jobject ret = NULL;
3446 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3447 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3448 if (a->is_within_bounds(index)) {
3449 ret = JNIHandles::make_local(env, a->obj_at(index));
3450 return ret;
3451 } else {
3452 char buf[jintAsStringSize];
3453 sprintf(buf, "%d", index);
3454 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3455 }
3456 JNI_END
3457
3458 #ifndef USDT2
3459 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3460 #else /* USDT2 */
3461 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3462 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3463 #endif /* USDT2 */
3464
3465 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3466 JNIWrapper("SetObjectArrayElement");
3467 #ifndef USDT2
3468 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3469 #else /* USDT2 */
3470 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3471 env, array, index, value);
3472 #endif /* USDT2 */
3473 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3474
3475 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3476 oop v = JNIHandles::resolve(value);
3477 if (a->is_within_bounds(index)) {
3478 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3479 a->obj_at_put(index, v);
3480 } else {
3481 THROW(vmSymbols::java_lang_ArrayStoreException());
3482 }
3483 } else {
3484 char buf[jintAsStringSize];
3485 sprintf(buf, "%d", index);
3486 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3487 }
3488 JNI_END
3489
3490
3491 #ifndef USDT2
3492 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3493 \
3494 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3495 \
3496 JNI_ENTRY(Return, \
3497 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3498 JNIWrapper("New" XSTR(Result) "Array"); \
3499 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3500 Return ret = NULL;\
3501 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3502 \
3503 oop obj= oopFactory::Allocator(len, CHECK_0); \
3504 ret = (Return) JNIHandles::make_local(env, obj); \
3505 return ret;\
3506 JNI_END
3507
3508 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3509 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3510 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3511 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3512 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3513 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3514 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3515 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3516
3517 #else /* USDT2 */
3518
3519 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3520 ,EntryProbe,ReturnProbe) \
3521 \
3522 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3523 , ReturnProbe); \
3524 \
3525 JNI_ENTRY(Return, \
3526 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3527 JNIWrapper("New" XSTR(Result) "Array"); \
3528 EntryProbe; \
3529 Return ret = NULL;\
3530 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3531 \
3532 oop obj= oopFactory::Allocator(len, CHECK_0); \
3533 ret = (Return) JNIHandles::make_local(env, obj); \
3534 return ret;\
3535 JNI_END
3536
3537 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3538 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3539 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3540 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3541 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3542 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3543 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3544 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3545 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3546 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3547 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3548 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3549 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3550 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3551 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3552 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3553 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3554 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3555 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3556 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3557 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3558 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3559 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3560 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3561 #endif /* USDT2 */
3562
3563 // Return an address which will fault if the caller writes to it.
3564
3565 static char* get_bad_address() {
3566 static char* bad_address = NULL;
3567 if (bad_address == NULL) {
3568 size_t size = os::vm_allocation_granularity();
3569 bad_address = os::reserve_memory(size);
3570 if (bad_address != NULL) {
3571 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3572 /*is_committed*/false);
3573 }
3574 }
3575 return bad_address;
3576 }
3577
3578
3579 #ifndef USDT2
3580 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3581 \
3582 JNI_QUICK_ENTRY(ElementType*, \
3583 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3584 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3585 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3586 /* allocate an chunk of memory in c land */ \
3587 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3588 ElementType* result; \
3589 int len = a->length(); \
3590 if (len == 0) { \
3591 /* Empty array: legal but useless, can't return NULL. \
3592 * Return a pointer to something useless. \
3593 * Avoid asserts in typeArrayOop. */ \
3594 result = (ElementType*)get_bad_address(); \
3595 } else { \
3596 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3597 /* copy the array to the c chunk */ \
3598 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3599 } \
3600 if (isCopy) *isCopy = JNI_TRUE; \
3601 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3602 return result; \
3603 JNI_END
3604
3605 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3606 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3607 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3608 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3609 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3610 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3611 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3612 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3613
3614 #else /* USDT2 */
3615
3616 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3617 , EntryProbe, ReturnProbe) \
3618 \
3619 JNI_QUICK_ENTRY(ElementType*, \
3620 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3621 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3622 EntryProbe; \
3623 /* allocate an chunk of memory in c land */ \
3624 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3625 ElementType* result; \
3626 int len = a->length(); \
3627 if (len == 0) { \
3628 /* Empty array: legal but useless, can't return NULL. \
3629 * Return a pointer to something useless. \
3630 * Avoid asserts in typeArrayOop. */ \
3631 result = (ElementType*)get_bad_address(); \
3632 } else { \
3633 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3634 /* copy the array to the c chunk */ \
3635 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3636 } \
3637 if (isCopy) *isCopy = JNI_TRUE; \
3638 ReturnProbe; \
3639 return result; \
3640 JNI_END
3641
3642 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3643 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3644 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3645 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3646 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3647 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3648 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3649 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3650 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3651 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3652 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3653 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3654 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3655 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3656 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3657 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3658 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3659 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3660 // Float and double probes don't return value because dtrace doesn't currently support it
3661 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3662 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3663 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3664 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3665 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3666 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3667 #endif /* USDT2 */
3668
3669 #ifndef USDT2
3670 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3671 \
3672 JNI_QUICK_ENTRY(void, \
3673 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3674 ElementType *buf, jint mode)) \
3675 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3676 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3677 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3678 int len = a->length(); \
3679 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3680 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3681 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3682 } \
3683 if ((mode == 0) || (mode == JNI_ABORT)) { \
3684 FreeHeap(buf); \
3685 } \
3686 } \
3687 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3688 JNI_END
3689
3690 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3691 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3692 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3693 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3694 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3695 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3696 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3697 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3698
3699 #else /* USDT2 */
3700
3701 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3702 , EntryProbe, ReturnProbe);\
3703 \
3704 JNI_QUICK_ENTRY(void, \
3705 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3706 ElementType *buf, jint mode)) \
3707 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3708 EntryProbe; \
3709 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3710 int len = a->length(); \
3711 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3712 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3713 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3714 } \
3715 if ((mode == 0) || (mode == JNI_ABORT)) { \
3716 FreeHeap(buf); \
3717 } \
3718 } \
3719 ReturnProbe; \
3720 JNI_END
3721
3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3723 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3724 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3725 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3726 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3727 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3728 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3729 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3730 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3731 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3732 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3733 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3734 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3735 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3736 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3738 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3739 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3740 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3741 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3742 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3743 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3744 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3745 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3746 #endif /* USDT2 */
3747
3748 #ifndef USDT2
3749 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3750 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3751 \
3752 JNI_ENTRY(void, \
3753 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3754 jsize len, ElementType *buf)) \
3755 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3756 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3757 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3758 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3759 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3760 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3761 } else { \
3762 if (len > 0) { \
3763 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3764 memcpy((u_char*) buf, \
3765 (u_char*) src->Tag##_at_addr(start), \
3766 len << sc); \
3767 } \
3768 } \
3769 JNI_END
3770
3771 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3772 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3773 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3774 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3775 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3776 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3777 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3778 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3779
3780 #else /* USDT2 */
3781
3782 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3783 , EntryProbe, ReturnProbe); \
3784 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3785 , ReturnProbe); \
3786 \
3787 JNI_ENTRY(void, \
3788 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3789 jsize len, ElementType *buf)) \
3790 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3791 EntryProbe; \
3792 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3793 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3794 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3795 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3796 } else { \
3797 if (len > 0) { \
3798 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3799 memcpy((u_char*) buf, \
3800 (u_char*) src->Tag##_at_addr(start), \
3801 len << sc); \
3802 } \
3803 } \
3804 JNI_END
3805
3806 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3807 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3808 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3809 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3810 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3811 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3812 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3813 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3814 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3815 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3816 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3817 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3818 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3819 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3820 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3821 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3822 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3823 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3824 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3825 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3826 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3827 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3828 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3829 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3830 #endif /* USDT2 */
3831
3832 #ifndef USDT2
3833 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3834 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3835 \
3836 JNI_ENTRY(void, \
3837 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3838 jsize len, const ElementType *buf)) \
3839 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3840 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3841 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3842 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3843 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3844 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3845 } else { \
3846 if (len > 0) { \
3847 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3848 memcpy((u_char*) dst->Tag##_at_addr(start), \
3849 (u_char*) buf, \
3850 len << sc); \
3851 } \
3852 } \
3853 JNI_END
3854
3855 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3856 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3857 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3858 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3859 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3860 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3861 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3862 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3863
3864 #else /* USDT2 */
3865
3866 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3867 , EntryProbe, ReturnProbe); \
3868 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3869 ,ReturnProbe); \
3870 \
3871 JNI_ENTRY(void, \
3872 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3873 jsize len, const ElementType *buf)) \
3874 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3875 EntryProbe; \
3876 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3877 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3878 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3879 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3880 } else { \
3881 if (len > 0) { \
3882 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3883 memcpy((u_char*) dst->Tag##_at_addr(start), \
3884 (u_char*) buf, \
3885 len << sc); \
3886 } \
3887 } \
3888 JNI_END
3889
3890 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3891 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3892 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3893 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3894 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3895 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3896 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3897 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3898 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3899 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3900 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3901 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3902 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3903 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3904 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3905 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3906 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3907 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3908 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3909 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3910 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3911 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3912 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3913 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3914 #endif /* USDT2 */
3915
3916
3917 //
3918 // Interception of natives
3919 //
3920
3921 // The RegisterNatives call being attempted tried to register with a method that
3922 // is not native. Ask JVM TI what prefixes have been specified. Then check
3923 // to see if the native method is now wrapped with the prefixes. See the
3924 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3925 static Method* find_prefixed_native(KlassHandle k,
3926 Symbol* name, Symbol* signature, TRAPS) {
3927 #if INCLUDE_JVMTI
3928 ResourceMark rm(THREAD);
3929 Method* method;
3930 int name_len = name->utf8_length();
3931 char* name_str = name->as_utf8();
3932 int prefix_count;
3933 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3934 for (int i = 0; i < prefix_count; i++) {
3935 char* prefix = prefixes[i];
3936 int prefix_len = (int)strlen(prefix);
3937
3938 // try adding this prefix to the method name and see if it matches another method name
3939 int trial_len = name_len + prefix_len;
3940 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3941 strcpy(trial_name_str, prefix);
3942 strcat(trial_name_str, name_str);
3943 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3944 if (trial_name == NULL) {
3945 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3946 }
3947 method = Klass::cast(k())->lookup_method(trial_name, signature);
3948 if (method == NULL) {
3949 continue; // signature doesn't match, try the next prefix
3950 }
3951 if (method->is_native()) {
3952 method->set_is_prefixed_native();
3953 return method; // wahoo, we found a prefixed version of the method, return it
3954 }
3955 // found as non-native, so prefix is good, add it, probably just need more prefixes
3956 name_len = trial_len;
3957 name_str = trial_name_str;
3958 }
3959 #endif // INCLUDE_JVMTI
3960 return NULL; // not found
3961 }
3962
3963 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3964 Method* method = Klass::cast(k())->lookup_method(name, signature);
3965 if (method == NULL) {
3966 ResourceMark rm;
3967 stringStream st;
3968 st.print("Method %s name or signature does not match",
3969 Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3970 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3971 }
3972 if (!method->is_native()) {
3973 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3974 method = find_prefixed_native(k, name, signature, THREAD);
3975 if (method == NULL) {
3976 ResourceMark rm;
3977 stringStream st;
3978 st.print("Method %s is not declared as native",
3979 Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3980 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3981 }
3982 }
3983
3984 if (entry != NULL) {
3985 method->set_native_function(entry,
3986 Method::native_bind_event_is_interesting);
3987 } else {
3988 method->clear_native_function();
3989 }
3990 if (PrintJNIResolving) {
3991 ResourceMark rm(THREAD);
3992 tty->print_cr("[Registering JNI native method %s.%s]",
3993 method->method_holder()->external_name(),
3994 method->name()->as_C_string());
3995 }
3996 return true;
3997 }
3998
3999 #ifndef USDT2
4000 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4001 #else /* USDT2 */
4002 DT_RETURN_MARK_DECL(RegisterNatives, jint
4003 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4004 #endif /* USDT2 */
4005
4006 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4007 const JNINativeMethod *methods,
4008 jint nMethods))
4009 JNIWrapper("RegisterNatives");
4010 #ifndef USDT2
4011 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4012 #else /* USDT2 */
4013 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4014 env, clazz, (void *) methods, nMethods);
4015 #endif /* USDT2 */
4016 jint ret = 0;
4017 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4018
4019 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4020
4021 for (int index = 0; index < nMethods; index++) {
4022 const char* meth_name = methods[index].name;
4023 const char* meth_sig = methods[index].signature;
4024 int meth_name_len = (int)strlen(meth_name);
4025
4026 // The class should have been loaded (we have an instance of the class
4027 // passed in) so the method and signature should already be in the symbol
4028 // table. If they're not there, the method doesn't exist.
4029 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4030 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4031
4032 if (name == NULL || signature == NULL) {
4033 ResourceMark rm;
4034 stringStream st;
4035 st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
4036 // Must return negative value on failure
4037 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4038 }
4039
4040 bool res = register_native(h_k, name, signature,
4041 (address) methods[index].fnPtr, THREAD);
4042 if (!res) {
4043 ret = -1;
4044 break;
4045 }
4046 }
4047 return ret;
4048 JNI_END
4049
4050
4051 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4052 JNIWrapper("UnregisterNatives");
4053 #ifndef USDT2
4054 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4055 #else /* USDT2 */
4056 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4057 env, clazz);
4058 #endif /* USDT2 */
4059 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4060 //%note jni_2
4061 if (Klass::cast(k)->oop_is_instance()) {
4062 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4063 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4064 if (m->is_native()) {
4065 m->clear_native_function();
4066 m->set_signature_handler(NULL);
4067 }
4068 }
4069 }
4070 #ifndef USDT2
4071 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4072 #else /* USDT2 */
4073 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4074 0);
4075 #endif /* USDT2 */
4076 return 0;
4077 JNI_END
4078
4079 //
4080 // Monitor functions
4081 //
4082
4083 #ifndef USDT2
4084 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4085 #else /* USDT2 */
4086 DT_RETURN_MARK_DECL(MonitorEnter, jint
4087 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4088 #endif /* USDT2 */
4089
4090 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4091 #ifndef USDT2
4092 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4093 #else /* USDT2 */
4094 HOTSPOT_JNI_MONITORENTER_ENTRY(
4095 env, jobj);
4096 #endif /* USDT2 */
4097 jint ret = JNI_ERR;
4098 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4099
4100 // If the object is null, we can't do anything with it
4101 if (jobj == NULL) {
4102 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4103 }
4104
4105 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4106 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4107 ret = JNI_OK;
4108 return ret;
4109 JNI_END
4110
4111 #ifndef USDT2
4112 DT_RETURN_MARK_DECL(MonitorExit, jint);
4113 #else /* USDT2 */
4114 DT_RETURN_MARK_DECL(MonitorExit, jint
4115 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4116 #endif /* USDT2 */
4117
4118 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4119 #ifndef USDT2
4120 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4121 #else /* USDT2 */
4122 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4123 env, jobj);
4124 #endif /* USDT2 */
4125 jint ret = JNI_ERR;
4126 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4127
4128 // Don't do anything with a null object
4129 if (jobj == NULL) {
4130 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4131 }
4132
4133 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4134 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4135
4136 ret = JNI_OK;
4137 return ret;
4138 JNI_END
4139
4140 //
4141 // Extensions
4142 //
4143
4144 #ifndef USDT2
4145 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4146 #else /* USDT2 */
4147 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4148 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4149 #endif /* USDT2 */
4150
4151 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4152 JNIWrapper("GetStringRegion");
4153 #ifndef USDT2
4154 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4155 #else /* USDT2 */
4156 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4157 env, string, start, len, buf);
4158 #endif /* USDT2 */
4159 DT_VOID_RETURN_MARK(GetStringRegion);
4160 oop s = JNIHandles::resolve_non_null(string);
4161 int s_len = java_lang_String::length(s);
4162 if (start < 0 || len < 0 || start + len > s_len) {
4163 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4164 } else {
4165 if (len > 0) {
4166 int s_offset = java_lang_String::offset(s);
4167 typeArrayOop s_value = java_lang_String::value(s);
4168 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4169 }
4170 }
4171 JNI_END
4172
4173 #ifndef USDT2
4174 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4175 #else /* USDT2 */
4176 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4177 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4178 #endif /* USDT2 */
4179
4180 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4181 JNIWrapper("GetStringUTFRegion");
4182 #ifndef USDT2
4183 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4184 #else /* USDT2 */
4185 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4186 env, string, start, len, buf);
4187 #endif /* USDT2 */
4188 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4189 oop s = JNIHandles::resolve_non_null(string);
4190 int s_len = java_lang_String::length(s);
4191 if (start < 0 || len < 0 || start + len > s_len) {
4192 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4193 } else {
4194 //%note jni_7
4195 if (len > 0) {
4196 ResourceMark rm(THREAD);
4197 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4198 int utf_len = (int)strlen(utf_region);
4199 memcpy(buf, utf_region, utf_len);
4200 buf[utf_len] = 0;
4201 } else {
4202 // JDK null-terminates the buffer even in len is zero
4203 if (buf != NULL) {
4204 buf[0] = 0;
4205 }
4206 }
4207 }
4208 JNI_END
4209
4210
4211 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4212 JNIWrapper("GetPrimitiveArrayCritical");
4213 #ifndef USDT2
4214 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4215 #else /* USDT2 */
4216 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4217 env, array, (uintptr_t *) isCopy);
4218 #endif /* USDT2 */
4219 GC_locker::lock_critical(thread);
4220 if (isCopy != NULL) {
4221 *isCopy = JNI_FALSE;
4222 }
4223 oop a = JNIHandles::resolve_non_null(array);
4224 assert(a->is_array(), "just checking");
4225 BasicType type;
4226 if (a->is_objArray()) {
4227 type = T_OBJECT;
4228 } else {
4229 type = TypeArrayKlass::cast(a->klass())->element_type();
4230 }
4231 void* ret = arrayOop(a)->base(type);
4232 #ifndef USDT2
4233 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4234 #else /* USDT2 */
4235 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4236 ret);
4237 #endif /* USDT2 */
4238 return ret;
4239 JNI_END
4240
4241
4242 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4243 JNIWrapper("ReleasePrimitiveArrayCritical");
4244 #ifndef USDT2
4245 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4246 #else /* USDT2 */
4247 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4248 env, array, carray, mode);
4249 #endif /* USDT2 */
4250 // The array, carray and mode arguments are ignored
4251 GC_locker::unlock_critical(thread);
4252 #ifndef USDT2
4253 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4254 #else /* USDT2 */
4255 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4256 );
4257 #endif /* USDT2 */
4258 JNI_END
4259
4260
4261 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4262 JNIWrapper("GetStringCritical");
4263 #ifndef USDT2
4264 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4265 #else /* USDT2 */
4266 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4267 env, string, (uintptr_t *) isCopy);
4268 #endif /* USDT2 */
4269 GC_locker::lock_critical(thread);
4270 if (isCopy != NULL) {
4271 *isCopy = JNI_FALSE;
4272 }
4273 oop s = JNIHandles::resolve_non_null(string);
4274 int s_len = java_lang_String::length(s);
4275 typeArrayOop s_value = java_lang_String::value(s);
4276 int s_offset = java_lang_String::offset(s);
4277 const jchar* ret;
4278 if (s_len > 0) {
4279 ret = s_value->char_at_addr(s_offset);
4280 } else {
4281 ret = (jchar*) s_value->base(T_CHAR);
4282 }
4283 #ifndef USDT2
4284 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4285 #else /* USDT2 */
4286 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4287 (uint16_t *) ret);
4288 #endif /* USDT2 */
4289 return ret;
4290 JNI_END
4291
4292
4293 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4294 JNIWrapper("ReleaseStringCritical");
4295 #ifndef USDT2
4296 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4297 #else /* USDT2 */
4298 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4299 env, str, (uint16_t *) chars);
4300 #endif /* USDT2 */
4301 // The str and chars arguments are ignored
4302 GC_locker::unlock_critical(thread);
4303 #ifndef USDT2
4304 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4305 #else /* USDT2 */
4306 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4307 );
4308 #endif /* USDT2 */
4309 JNI_END
4310
4311
4312 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4313 JNIWrapper("jni_NewWeakGlobalRef");
4314 #ifndef USDT2
4315 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4316 #else /* USDT2 */
4317 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4318 env, ref);
4319 #endif /* USDT2 */
4320 Handle ref_handle(thread, JNIHandles::resolve(ref));
4321 jweak ret = JNIHandles::make_weak_global(ref_handle);
4322 #ifndef USDT2
4323 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4324 #else /* USDT2 */
4325 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4326 ret);
4327 #endif /* USDT2 */
4328 return ret;
4329 JNI_END
4330
4331 // Must be JNI_ENTRY (with HandleMark)
4332 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4333 JNIWrapper("jni_DeleteWeakGlobalRef");
4334 #ifndef USDT2
4335 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4336 #else /* USDT2 */
4337 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4338 env, ref);
4339 #endif /* USDT2 */
4340 JNIHandles::destroy_weak_global(ref);
4341 #ifndef USDT2
4342 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4343 #else /* USDT2 */
4344 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4345 );
4346 #endif /* USDT2 */
4347 JNI_END
4348
4349
4350 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4351 JNIWrapper("jni_ExceptionCheck");
4352 #ifndef USDT2
4353 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4354 #else /* USDT2 */
4355 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4356 env);
4357 #endif /* USDT2 */
4358 jni_check_async_exceptions(thread);
4359 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4360 #ifndef USDT2
4361 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4362 #else /* USDT2 */
4363 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4364 ret);
4365 #endif /* USDT2 */
4366 return ret;
4367 JNI_END
4368
4369
4370 // Initialization state for three routines below relating to
4371 // java.nio.DirectBuffers
4372 static jint directBufferSupportInitializeStarted = 0;
4373 static volatile jint directBufferSupportInitializeEnded = 0;
4374 static volatile jint directBufferSupportInitializeFailed = 0;
4375 static jclass bufferClass = NULL;
4376 static jclass directBufferClass = NULL;
4377 static jclass directByteBufferClass = NULL;
4378 static jmethodID directByteBufferConstructor = NULL;
4379 static jfieldID directBufferAddressField = NULL;
4380 static jfieldID bufferCapacityField = NULL;
4381
4382 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4383 Handle loader; // null (bootstrap) loader
4384 Handle protection_domain; // null protection domain
4385
4386 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4387 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4388
4389 if (TraceClassResolution && result != NULL) {
4390 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4391 }
4392 return result;
4393 }
4394
4395 // These lookups are done with the NULL (bootstrap) ClassLoader to
4396 // circumvent any security checks that would be done by jni_FindClass.
4397 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4398 {
4399 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4400 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4401 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4402 return true;
4403 }
4404 JNI_END
4405
4406
4407 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4408 if (directBufferSupportInitializeFailed) {
4409 return false;
4410 }
4411
4412 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4413 if (!lookupDirectBufferClasses(env)) {
4414 directBufferSupportInitializeFailed = 1;
4415 return false;
4416 }
4417
4418 // Make global references for these
4419 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4420 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4421 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4422
4423 // Get needed field and method IDs
4424 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4425 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4426 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4427
4428 if ((directByteBufferConstructor == NULL) ||
4429 (directBufferAddressField == NULL) ||
4430 (bufferCapacityField == NULL)) {
4431 directBufferSupportInitializeFailed = 1;
4432 return false;
4433 }
4434
4435 directBufferSupportInitializeEnded = 1;
4436 } else {
4437 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4438 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4439 // os::sleep which requires the VM state transition. On other platforms, it
4440 // is not necessary. The following call to change the VM state is purposely
4441 // put inside the loop to avoid potential deadlock when multiple threads
4442 // try to call this method. See 6791815 for more details.
4443 ThreadInVMfromNative tivn(thread);
4444 os::yield_all();
4445 }
4446 }
4447
4448 return !directBufferSupportInitializeFailed;
4449 }
4450
4451 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4452 {
4453 // thread_from_jni_environment() will block if VM is gone.
4454 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4455
4456 JNIWrapper("jni_NewDirectByteBuffer");
4457 #ifndef USDT2
4458 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4459 #else /* USDT2 */
4460 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4461 env, address, capacity);
4462 #endif /* USDT2 */
4463
4464 if (!directBufferSupportInitializeEnded) {
4465 if (!initializeDirectBufferSupport(env, thread)) {
4466 #ifndef USDT2
4467 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4468 #else /* USDT2 */
4469 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4470 NULL);
4471 #endif /* USDT2 */
4472 return NULL;
4473 }
4474 }
4475
4476 // Being paranoid about accidental sign extension on address
4477 jlong addr = (jlong) ((uintptr_t) address);
4478 // NOTE that package-private DirectByteBuffer constructor currently
4479 // takes int capacity
4480 jint cap = (jint) capacity;
4481 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4482 #ifndef USDT2
4483 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4484 #else /* USDT2 */
4485 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4486 ret);
4487 #endif /* USDT2 */
4488 return ret;
4489 }
4490
4491 #ifndef USDT2
4492 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4493 #else /* USDT2 */
4494 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4495 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4496 #endif /* USDT2 */
4497
4498 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4499 {
4500 // thread_from_jni_environment() will block if VM is gone.
4501 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4502
4503 JNIWrapper("jni_GetDirectBufferAddress");
4504 #ifndef USDT2
4505 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4506 #else /* USDT2 */
4507 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4508 env, buf);
4509 #endif /* USDT2 */
4510 void* ret = NULL;
4511 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4512
4513 if (!directBufferSupportInitializeEnded) {
4514 if (!initializeDirectBufferSupport(env, thread)) {
4515 return 0;
4516 }
4517 }
4518
4519 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4520 return 0;
4521 }
4522
4523 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4524 return ret;
4525 }
4526
4527 #ifndef USDT2
4528 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4529 #else /* USDT2 */
4530 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4531 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4532 #endif /* USDT2 */
4533
4534 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4535 {
4536 // thread_from_jni_environment() will block if VM is gone.
4537 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4538
4539 JNIWrapper("jni_GetDirectBufferCapacity");
4540 #ifndef USDT2
4541 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4542 #else /* USDT2 */
4543 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4544 env, buf);
4545 #endif /* USDT2 */
4546 jlong ret = -1;
4547 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4548
4549 if (!directBufferSupportInitializeEnded) {
4550 if (!initializeDirectBufferSupport(env, thread)) {
4551 ret = 0;
4552 return ret;
4553 }
4554 }
4555
4556 if (buf == NULL) {
4557 return -1;
4558 }
4559
4560 if (!env->IsInstanceOf(buf, directBufferClass)) {
4561 return -1;
4562 }
4563
4564 // NOTE that capacity is currently an int in the implementation
4565 ret = env->GetIntField(buf, bufferCapacityField);
4566 return ret;
4567 }
4568
4569
4570 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4571 JNIWrapper("GetVersion");
4572 #ifndef USDT2
4573 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4574 #else /* USDT2 */
4575 HOTSPOT_JNI_GETVERSION_ENTRY(
4576 env);
4577 #endif /* USDT2 */
4578 #ifndef USDT2
4579 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4580 #else /* USDT2 */
4581 HOTSPOT_JNI_GETVERSION_RETURN(
4582 CurrentVersion);
4583 #endif /* USDT2 */
4584 return CurrentVersion;
4585 JNI_END
4586
4587 extern struct JavaVM_ main_vm;
4588
4589 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4590 JNIWrapper("jni_GetJavaVM");
4591 #ifndef USDT2
4592 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4593 #else /* USDT2 */
4594 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4595 env, (void **) vm);
4596 #endif /* USDT2 */
4597 *vm = (JavaVM *)(&main_vm);
4598 #ifndef USDT2
4599 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4600 #else /* USDT2 */
4601 HOTSPOT_JNI_GETJAVAVM_RETURN(
4602 JNI_OK);
4603 #endif /* USDT2 */
4604 return JNI_OK;
4605 JNI_END
4606
4607 // Structure containing all jni functions
4608 struct JNINativeInterface_ jni_NativeInterface = {
4609 NULL,
4610 NULL,
4611 NULL,
4612
4613 NULL,
4614
4615 jni_GetVersion,
4616
4617 jni_DefineClass,
4618 jni_FindClass,
4619
4620 jni_FromReflectedMethod,
4621 jni_FromReflectedField,
4622
4623 jni_ToReflectedMethod,
4624
4625 jni_GetSuperclass,
4626 jni_IsAssignableFrom,
4627
4628 jni_ToReflectedField,
4629
4630 jni_Throw,
4631 jni_ThrowNew,
4632 jni_ExceptionOccurred,
4633 jni_ExceptionDescribe,
4634 jni_ExceptionClear,
4635 jni_FatalError,
4636
4637 jni_PushLocalFrame,
4638 jni_PopLocalFrame,
4639
4640 jni_NewGlobalRef,
4641 jni_DeleteGlobalRef,
4642 jni_DeleteLocalRef,
4643 jni_IsSameObject,
4644
4645 jni_NewLocalRef,
4646 jni_EnsureLocalCapacity,
4647
4648 jni_AllocObject,
4649 jni_NewObject,
4650 jni_NewObjectV,
4651 jni_NewObjectA,
4652
4653 jni_GetObjectClass,
4654 jni_IsInstanceOf,
4655
4656 jni_GetMethodID,
4657
4658 jni_CallObjectMethod,
4659 jni_CallObjectMethodV,
4660 jni_CallObjectMethodA,
4661 jni_CallBooleanMethod,
4662 jni_CallBooleanMethodV,
4663 jni_CallBooleanMethodA,
4664 jni_CallByteMethod,
4665 jni_CallByteMethodV,
4666 jni_CallByteMethodA,
4667 jni_CallCharMethod,
4668 jni_CallCharMethodV,
4669 jni_CallCharMethodA,
4670 jni_CallShortMethod,
4671 jni_CallShortMethodV,
4672 jni_CallShortMethodA,
4673 jni_CallIntMethod,
4674 jni_CallIntMethodV,
4675 jni_CallIntMethodA,
4676 jni_CallLongMethod,
4677 jni_CallLongMethodV,
4678 jni_CallLongMethodA,
4679 jni_CallFloatMethod,
4680 jni_CallFloatMethodV,
4681 jni_CallFloatMethodA,
4682 jni_CallDoubleMethod,
4683 jni_CallDoubleMethodV,
4684 jni_CallDoubleMethodA,
4685 jni_CallVoidMethod,
4686 jni_CallVoidMethodV,
4687 jni_CallVoidMethodA,
4688
4689 jni_CallNonvirtualObjectMethod,
4690 jni_CallNonvirtualObjectMethodV,
4691 jni_CallNonvirtualObjectMethodA,
4692 jni_CallNonvirtualBooleanMethod,
4693 jni_CallNonvirtualBooleanMethodV,
4694 jni_CallNonvirtualBooleanMethodA,
4695 jni_CallNonvirtualByteMethod,
4696 jni_CallNonvirtualByteMethodV,
4697 jni_CallNonvirtualByteMethodA,
4698 jni_CallNonvirtualCharMethod,
4699 jni_CallNonvirtualCharMethodV,
4700 jni_CallNonvirtualCharMethodA,
4701 jni_CallNonvirtualShortMethod,
4702 jni_CallNonvirtualShortMethodV,
4703 jni_CallNonvirtualShortMethodA,
4704 jni_CallNonvirtualIntMethod,
4705 jni_CallNonvirtualIntMethodV,
4706 jni_CallNonvirtualIntMethodA,
4707 jni_CallNonvirtualLongMethod,
4708 jni_CallNonvirtualLongMethodV,
4709 jni_CallNonvirtualLongMethodA,
4710 jni_CallNonvirtualFloatMethod,
4711 jni_CallNonvirtualFloatMethodV,
4712 jni_CallNonvirtualFloatMethodA,
4713 jni_CallNonvirtualDoubleMethod,
4714 jni_CallNonvirtualDoubleMethodV,
4715 jni_CallNonvirtualDoubleMethodA,
4716 jni_CallNonvirtualVoidMethod,
4717 jni_CallNonvirtualVoidMethodV,
4718 jni_CallNonvirtualVoidMethodA,
4719
4720 jni_GetFieldID,
4721
4722 jni_GetObjectField,
4723 jni_GetBooleanField,
4724 jni_GetByteField,
4725 jni_GetCharField,
4726 jni_GetShortField,
4727 jni_GetIntField,
4728 jni_GetLongField,
4729 jni_GetFloatField,
4730 jni_GetDoubleField,
4731
4732 jni_SetObjectField,
4733 jni_SetBooleanField,
4734 jni_SetByteField,
4735 jni_SetCharField,
4736 jni_SetShortField,
4737 jni_SetIntField,
4738 jni_SetLongField,
4739 jni_SetFloatField,
4740 jni_SetDoubleField,
4741
4742 jni_GetStaticMethodID,
4743
4744 jni_CallStaticObjectMethod,
4745 jni_CallStaticObjectMethodV,
4746 jni_CallStaticObjectMethodA,
4747 jni_CallStaticBooleanMethod,
4748 jni_CallStaticBooleanMethodV,
4749 jni_CallStaticBooleanMethodA,
4750 jni_CallStaticByteMethod,
4751 jni_CallStaticByteMethodV,
4752 jni_CallStaticByteMethodA,
4753 jni_CallStaticCharMethod,
4754 jni_CallStaticCharMethodV,
4755 jni_CallStaticCharMethodA,
4756 jni_CallStaticShortMethod,
4757 jni_CallStaticShortMethodV,
4758 jni_CallStaticShortMethodA,
4759 jni_CallStaticIntMethod,
4760 jni_CallStaticIntMethodV,
4761 jni_CallStaticIntMethodA,
4762 jni_CallStaticLongMethod,
4763 jni_CallStaticLongMethodV,
4764 jni_CallStaticLongMethodA,
4765 jni_CallStaticFloatMethod,
4766 jni_CallStaticFloatMethodV,
4767 jni_CallStaticFloatMethodA,
4768 jni_CallStaticDoubleMethod,
4769 jni_CallStaticDoubleMethodV,
4770 jni_CallStaticDoubleMethodA,
4771 jni_CallStaticVoidMethod,
4772 jni_CallStaticVoidMethodV,
4773 jni_CallStaticVoidMethodA,
4774
4775 jni_GetStaticFieldID,
4776
4777 jni_GetStaticObjectField,
4778 jni_GetStaticBooleanField,
4779 jni_GetStaticByteField,
4780 jni_GetStaticCharField,
4781 jni_GetStaticShortField,
4782 jni_GetStaticIntField,
4783 jni_GetStaticLongField,
4784 jni_GetStaticFloatField,
4785 jni_GetStaticDoubleField,
4786
4787 jni_SetStaticObjectField,
4788 jni_SetStaticBooleanField,
4789 jni_SetStaticByteField,
4790 jni_SetStaticCharField,
4791 jni_SetStaticShortField,
4792 jni_SetStaticIntField,
4793 jni_SetStaticLongField,
4794 jni_SetStaticFloatField,
4795 jni_SetStaticDoubleField,
4796
4797 jni_NewString,
4798 jni_GetStringLength,
4799 jni_GetStringChars,
4800 jni_ReleaseStringChars,
4801
4802 jni_NewStringUTF,
4803 jni_GetStringUTFLength,
4804 jni_GetStringUTFChars,
4805 jni_ReleaseStringUTFChars,
4806
4807 jni_GetArrayLength,
4808
4809 jni_NewObjectArray,
4810 jni_GetObjectArrayElement,
4811 jni_SetObjectArrayElement,
4812
4813 jni_NewBooleanArray,
4814 jni_NewByteArray,
4815 jni_NewCharArray,
4816 jni_NewShortArray,
4817 jni_NewIntArray,
4818 jni_NewLongArray,
4819 jni_NewFloatArray,
4820 jni_NewDoubleArray,
4821
4822 jni_GetBooleanArrayElements,
4823 jni_GetByteArrayElements,
4824 jni_GetCharArrayElements,
4825 jni_GetShortArrayElements,
4826 jni_GetIntArrayElements,
4827 jni_GetLongArrayElements,
4828 jni_GetFloatArrayElements,
4829 jni_GetDoubleArrayElements,
4830
4831 jni_ReleaseBooleanArrayElements,
4832 jni_ReleaseByteArrayElements,
4833 jni_ReleaseCharArrayElements,
4834 jni_ReleaseShortArrayElements,
4835 jni_ReleaseIntArrayElements,
4836 jni_ReleaseLongArrayElements,
4837 jni_ReleaseFloatArrayElements,
4838 jni_ReleaseDoubleArrayElements,
4839
4840 jni_GetBooleanArrayRegion,
4841 jni_GetByteArrayRegion,
4842 jni_GetCharArrayRegion,
4843 jni_GetShortArrayRegion,
4844 jni_GetIntArrayRegion,
4845 jni_GetLongArrayRegion,
4846 jni_GetFloatArrayRegion,
4847 jni_GetDoubleArrayRegion,
4848
4849 jni_SetBooleanArrayRegion,
4850 jni_SetByteArrayRegion,
4851 jni_SetCharArrayRegion,
4852 jni_SetShortArrayRegion,
4853 jni_SetIntArrayRegion,
4854 jni_SetLongArrayRegion,
4855 jni_SetFloatArrayRegion,
4856 jni_SetDoubleArrayRegion,
4857
4858 jni_RegisterNatives,
4859 jni_UnregisterNatives,
4860
4861 jni_MonitorEnter,
4862 jni_MonitorExit,
4863
4864 jni_GetJavaVM,
4865
4866 jni_GetStringRegion,
4867 jni_GetStringUTFRegion,
4868
4869 jni_GetPrimitiveArrayCritical,
4870 jni_ReleasePrimitiveArrayCritical,
4871
4872 jni_GetStringCritical,
4873 jni_ReleaseStringCritical,
4874
4875 jni_NewWeakGlobalRef,
4876 jni_DeleteWeakGlobalRef,
4877
4878 jni_ExceptionCheck,
4879
4880 jni_NewDirectByteBuffer,
4881 jni_GetDirectBufferAddress,
4882 jni_GetDirectBufferCapacity,
4883
4884 // New 1_6 features
4885
4886 jni_GetObjectRefType
4887 };
4888
4889
4890 // For jvmti use to modify jni function table.
4891 // Java threads in native contiues to run until it is transitioned
4892 // to VM at safepoint. Before the transition or before it is blocked
4893 // for safepoint it may access jni function table. VM could crash if
4894 // any java thread access the jni function table in the middle of memcpy.
4895 // To avoid this each function pointers are copied automically.
4896 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4897 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4898 intptr_t *a = (intptr_t *) jni_functions();
4899 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4900 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4901 Atomic::store_ptr(*b++, a++);
4902 }
4903 }
4904
4905 void quicken_jni_functions() {
4906 // Replace Get<Primitive>Field with fast versions
4907 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4908 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4909 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4910 // windows x86 currently needs SEH wrapper and the gain of the fast
4911 // versions currently isn't certain for server vm on uniprocessor.
4912 && os::is_MP()
4913 #endif
4914 ) {
4915 address func;
4916 func = JNI_FastGetField::generate_fast_get_boolean_field();
4917 if (func != (address)-1) {
4918 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4919 }
4920 func = JNI_FastGetField::generate_fast_get_byte_field();
4921 if (func != (address)-1) {
4922 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4923 }
4924 func = JNI_FastGetField::generate_fast_get_char_field();
4925 if (func != (address)-1) {
4926 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4927 }
4928 func = JNI_FastGetField::generate_fast_get_short_field();
4929 if (func != (address)-1) {
4930 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4931 }
4932 func = JNI_FastGetField::generate_fast_get_int_field();
4933 if (func != (address)-1) {
4934 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4935 }
4936 func = JNI_FastGetField::generate_fast_get_long_field();
4937 if (func != (address)-1) {
4938 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4939 }
4940 func = JNI_FastGetField::generate_fast_get_float_field();
4941 if (func != (address)-1) {
4942 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4943 }
4944 func = JNI_FastGetField::generate_fast_get_double_field();
4945 if (func != (address)-1) {
4946 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4947 }
4948 }
4949 }
4950
4951 // Returns the function structure
4952 struct JNINativeInterface_* jni_functions() {
4953 #if INCLUDE_JNI_CHECK
4954 if (CheckJNICalls) return jni_functions_check();
4955 #endif // INCLUDE_JNI_CHECK
4956 return &jni_NativeInterface;
4957 }
4958
4959 // Returns the function structure
4960 struct JNINativeInterface_* jni_functions_nocheck() {
4961 return &jni_NativeInterface;
4962 }
4963
4964
4965 // Invocation API
4966
4967
4968 // Forward declaration
4969 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4970
4971 // Global invocation API vars
4972 volatile jint vm_created = 0;
4973 // Indicate whether it is safe to recreate VM
4974 volatile jint safe_to_recreate_vm = 1;
4975 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4976
4977
4978 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4979 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4980
4981 #ifndef USDT2
4982 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
4983 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
4984 #else /* USDT2 */
4985 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
4986 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
4987 #endif /* USDT2 */
4988
4989 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
4990 #ifndef USDT2
4991 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
4992 #else /* USDT2 */
4993 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
4994 args_);
4995 #endif /* USDT2 */
4996 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
4997 jint ret = JNI_ERR;
4998 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
4999
5000 if (Threads::is_supported_jni_version(args->version)) {
5001 ret = JNI_OK;
5002 }
5003 // 1.1 style no longer supported in hotspot.
5004 // According the JNI spec, we should update args->version on return.
5005 // We also use the structure to communicate with launcher about default
5006 // stack size.
5007 if (args->version == JNI_VERSION_1_1) {
5008 args->version = JNI_VERSION_1_2;
5009 // javaStackSize is int in arguments structure
5010 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5011 args->javaStackSize = (jint)(ThreadStackSize * K);
5012 }
5013 return ret;
5014 }
5015
5016 #ifndef PRODUCT
5017
5018 #include "gc_interface/collectedHeap.hpp"
5019 #include "utilities/quickSort.hpp"
5020
5021 #define run_unit_test(unit_test_function_call) \
5022 tty->print_cr("Running test: " #unit_test_function_call); \
5023 unit_test_function_call
5024
5025 void execute_internal_vm_tests() {
5026 if (ExecuteInternalVMTests) {
5027 tty->print_cr("Running internal VM tests");
5028 run_unit_test(GlobalDefinitions::test_globals());
5029 run_unit_test(arrayOopDesc::test_max_array_length());
5030 run_unit_test(CollectedHeap::test_is_in());
5031 run_unit_test(QuickSort::test_quick_sort());
5032 run_unit_test(AltHashing::test_alt_hash());
5033 tty->print_cr("All internal VM tests passed");
5034 }
5035 }
5036
5037 #undef run_unit_test
5038
5039 #endif
5040
5041 #ifndef USDT2
5042 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5043 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5044 #else /* USDT2 */
5045 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5046 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5047 #endif /* USDT2 */
5048
5049 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5050 #ifndef USDT2
5051 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5052 #else /* USDT2 */
5053 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5054 (void **) vm, penv, args);
5055 #endif /* USDT2 */
5056
5057 jint result = JNI_ERR;
5058 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5059
5060 // We're about to use Atomic::xchg for synchronization. Some Zero
5061 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5062 // but __sync_lock_test_and_set is not guaranteed to do what we want
5063 // on all architectures. So we check it works before relying on it.
5064 #if defined(ZERO) && defined(ASSERT)
5065 {
5066 jint a = 0xcafebabe;
5067 jint b = Atomic::xchg(0xdeadbeef, &a);
5068 void *c = &a;
5069 void *d = Atomic::xchg_ptr(&b, &c);
5070 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5071 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5072 }
5073 #endif // ZERO && ASSERT
5074
5075 // At the moment it's only possible to have one Java VM,
5076 // since some of the runtime state is in global variables.
5077
5078 // We cannot use our mutex locks here, since they only work on
5079 // Threads. We do an atomic compare and exchange to ensure only
5080 // one thread can call this method at a time
5081
5082 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5083 // the add/dec implementations are dependent on whether we are running
5084 // on a multiprocessor, and at this stage of initialization the os::is_MP
5085 // function used to determine this will always return false. Atomic::xchg
5086 // does not have this problem.
5087 if (Atomic::xchg(1, &vm_created) == 1) {
5088 return JNI_ERR; // already created, or create attempt in progress
5089 }
5090 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5091 return JNI_ERR; // someone tried and failed and retry not allowed.
5092 }
5093
5094 assert(vm_created == 1, "vm_created is true during the creation");
5095
5096 /**
5097 * Certain errors during initialization are recoverable and do not
5098 * prevent this method from being called again at a later time
5099 * (perhaps with different arguments). However, at a certain
5100 * point during initialization if an error occurs we cannot allow
5101 * this function to be called again (or it will crash). In those
5102 * situations, the 'canTryAgain' flag is set to false, which atomically
5103 * sets safe_to_recreate_vm to 1, such that any new call to
5104 * JNI_CreateJavaVM will immediately fail using the above logic.
5105 */
5106 bool can_try_again = true;
5107
5108 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5109 if (result == JNI_OK) {
5110 JavaThread *thread = JavaThread::current();
5111 /* thread is thread_in_vm here */
5112 *vm = (JavaVM *)(&main_vm);
5113 *(JNIEnv**)penv = thread->jni_environment();
5114
5115 // Tracks the time application was running before GC
5116 RuntimeService::record_application_start();
5117
5118 // Notify JVMTI
5119 if (JvmtiExport::should_post_thread_life()) {
5120 JvmtiExport::post_thread_start(thread);
5121 }
5122
5123 EVENT_BEGIN(TraceEventThreadStart, event);
5124 EVENT_COMMIT(event,
5125 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5126
5127 // Check if we should compile all classes on bootclasspath
5128 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5129 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5130 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5131 } else {
5132 if (can_try_again) {
5133 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5134 safe_to_recreate_vm = 1;
5135 }
5136
5137 // Creation failed. We must reset vm_created
5138 *vm = 0;
5139 *(JNIEnv**)penv = 0;
5140 // reset vm_created last to avoid race condition. Use OrderAccess to
5141 // control both compiler and architectural-based reordering.
5142 OrderAccess::release_store(&vm_created, 0);
5143 }
5144
5145 NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5146 NOT_PRODUCT(execute_internal_vm_tests());
5147 return result;
5148 }
5149
5150 #ifndef USDT2
5151 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5152 JavaVM**, jsize, jsize*);
5153 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5154 #endif /* !USDT2 */
5155
5156 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5157 // See bug 4367188, the wrapper can sometimes cause VM crashes
5158 // JNIWrapper("GetCreatedJavaVMs");
5159 #ifndef USDT2
5160 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5161 vm_buf, bufLen, numVMs);
5162 #else /* USDT2 */
5163 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5164 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5165 #endif /* USDT2 */
5166 if (vm_created) {
5167 if (numVMs != NULL) *numVMs = 1;
5168 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5169 } else {
5170 if (numVMs != NULL) *numVMs = 0;
5171 }
5172 #ifndef USDT2
5173 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5174 #else /* USDT2 */
5175 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5176 JNI_OK);
5177 #endif /* USDT2 */
5178 return JNI_OK;
5179 }
5180
5181 extern "C" {
5182
5183 #ifndef USDT2
5184 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5185 #else /* USDT2 */
5186 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5187 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5188 #endif /* USDT2 */
5189
5190 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5191 #ifndef USDT2
5192 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5193 #else /* USDT2 */
5194 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5195 vm);
5196 #endif /* USDT2 */
5197 jint res = JNI_ERR;
5198 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5199
5200 if (!vm_created) {
5201 res = JNI_ERR;
5202 return res;
5203 }
5204
5205 JNIWrapper("DestroyJavaVM");
5206 JNIEnv *env;
5207 JavaVMAttachArgs destroyargs;
5208 destroyargs.version = CurrentVersion;
5209 destroyargs.name = (char *)"DestroyJavaVM";
5210 destroyargs.group = NULL;
5211 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5212 if (res != JNI_OK) {
5213 return res;
5214 }
5215
5216 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5217 JavaThread* thread = JavaThread::current();
5218 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5219 if (Threads::destroy_vm()) {
5220 // Should not change thread state, VM is gone
5221 vm_created = false;
5222 res = JNI_OK;
5223 return res;
5224 } else {
5225 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5226 res = JNI_ERR;
5227 return res;
5228 }
5229 }
5230
5231
5232 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5233 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5234
5235 // Check below commented out from JDK1.2fcs as well
5236 /*
5237 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5238 return JNI_EVERSION;
5239 }
5240 */
5241
5242 Thread* t = ThreadLocalStorage::get_thread_slow();
5243 if (t != NULL) {
5244 // If the thread has been attached this operation is a no-op
5245 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5246 return JNI_OK;
5247 }
5248
5249 // Create a thread and mark it as attaching so it will be skipped by the
5250 // ThreadsListEnumerator - see CR 6404306
5251 JavaThread* thread = new JavaThread(true);
5252
5253 // Set correct safepoint info. The thread is going to call into Java when
5254 // initializing the Java level thread object. Hence, the correct state must
5255 // be set in order for the Safepoint code to deal with it correctly.
5256 thread->set_thread_state(_thread_in_vm);
5257 // Must do this before initialize_thread_local_storage
5258 thread->record_stack_base_and_size();
5259
5260 thread->initialize_thread_local_storage();
5261
5262 if (!os::create_attached_thread(thread)) {
5263 delete thread;
5264 return JNI_ERR;
5265 }
5266 // Enable stack overflow checks
5267 thread->create_stack_guard_pages();
5268
5269 thread->initialize_tlab();
5270
5271 thread->cache_global_variables();
5272
5273 // Crucial that we do not have a safepoint check for this thread, since it has
5274 // not been added to the Thread list yet.
5275 { Threads_lock->lock_without_safepoint_check();
5276 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5277 // avoid this thread trying to do a GC before it is added to the thread-list
5278 thread->set_active_handles(JNIHandleBlock::allocate_block());
5279 Threads::add(thread, daemon);
5280 Threads_lock->unlock();
5281 }
5282 // Create thread group and name info from attach arguments
5283 oop group = NULL;
5284 char* thread_name = NULL;
5285 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5286 group = JNIHandles::resolve(args->group);
5287 thread_name = args->name; // may be NULL
5288 }
5289 if (group == NULL) group = Universe::main_thread_group();
5290
5291 // Create Java level thread object and attach it to this thread
5292 bool attach_failed = false;
5293 {
5294 EXCEPTION_MARK;
5295 HandleMark hm(THREAD);
5296 Handle thread_group(THREAD, group);
5297 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5298 if (HAS_PENDING_EXCEPTION) {
5299 CLEAR_PENDING_EXCEPTION;
5300 // cleanup outside the handle mark.
5301 attach_failed = true;
5302 }
5303 }
5304
5305 if (attach_failed) {
5306 // Added missing cleanup
5307 thread->cleanup_failed_attach_current_thread();
5308 return JNI_ERR;
5309 }
5310
5311 // mark the thread as no longer attaching
5312 // this uses a fence to push the change through so we don't have
5313 // to regrab the threads_lock
5314 thread->set_done_attaching_via_jni();
5315
5316 // Set java thread status.
5317 java_lang_Thread::set_thread_status(thread->threadObj(),
5318 java_lang_Thread::RUNNABLE);
5319
5320 // Notify the debugger
5321 if (JvmtiExport::should_post_thread_life()) {
5322 JvmtiExport::post_thread_start(thread);
5323 }
5324
5325 EVENT_BEGIN(TraceEventThreadStart, event);
5326 EVENT_COMMIT(event,
5327 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5328
5329 *(JNIEnv**)penv = thread->jni_environment();
5330
5331 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5332 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5333 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5334 // needed.
5335
5336 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5337
5338 // Perform any platform dependent FPU setup
5339 os::setup_fpu();
5340
5341 return JNI_OK;
5342 }
5343
5344
5345 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5346 #ifndef USDT2
5347 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5348 #else /* USDT2 */
5349 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5350 vm, penv, _args);
5351 #endif /* USDT2 */
5352 if (!vm_created) {
5353 #ifndef USDT2
5354 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5355 #else /* USDT2 */
5356 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5357 (uint32_t) JNI_ERR);
5358 #endif /* USDT2 */
5359 return JNI_ERR;
5360 }
5361
5362 JNIWrapper("AttachCurrentThread");
5363 jint ret = attach_current_thread(vm, penv, _args, false);
5364 #ifndef USDT2
5365 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5366 #else /* USDT2 */
5367 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5368 ret);
5369 #endif /* USDT2 */
5370 return ret;
5371 }
5372
5373
5374 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5375 #ifndef USDT2
5376 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5377 #else /* USDT2 */
5378 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5379 vm);
5380 #endif /* USDT2 */
5381 VM_Exit::block_if_vm_exited();
5382
5383 JNIWrapper("DetachCurrentThread");
5384
5385 // If the thread has been deattacted the operations is a no-op
5386 if (ThreadLocalStorage::thread() == NULL) {
5387 #ifndef USDT2
5388 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5389 #else /* USDT2 */
5390 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5391 JNI_OK);
5392 #endif /* USDT2 */
5393 return JNI_OK;
5394 }
5395
5396 JavaThread* thread = JavaThread::current();
5397 if (thread->has_last_Java_frame()) {
5398 #ifndef USDT2
5399 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5400 #else /* USDT2 */
5401 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5402 (uint32_t) JNI_ERR);
5403 #endif /* USDT2 */
5404 // Can't detach a thread that's running java, that can't work.
5405 return JNI_ERR;
5406 }
5407
5408 // Safepoint support. Have to do call-back to safepoint code, if in the
5409 // middel of a safepoint operation
5410 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5411
5412 // XXX: Note that JavaThread::exit() call below removes the guards on the
5413 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5414 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5415 // of the guards is visible in jni_AttachCurrentThread above,
5416 // the removal of the guards is buried below in JavaThread::exit()
5417 // here. The abstraction should be more symmetrically either exposed
5418 // or hidden (e.g. it could probably be hidden in the same
5419 // (platform-dependent) methods where we do alternate stack
5420 // maintenance work?)
5421 thread->exit(false, JavaThread::jni_detach);
5422 delete thread;
5423
5424 #ifndef USDT2
5425 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5426 #else /* USDT2 */
5427 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5428 JNI_OK);
5429 #endif /* USDT2 */
5430 return JNI_OK;
5431 }
5432
5433 #ifndef USDT2
5434 DT_RETURN_MARK_DECL(GetEnv, jint);
5435 #else /* USDT2 */
5436 DT_RETURN_MARK_DECL(GetEnv, jint
5437 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5438 #endif /* USDT2 */
5439
5440 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5441 #ifndef USDT2
5442 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5443 #else /* USDT2 */
5444 HOTSPOT_JNI_GETENV_ENTRY(
5445 vm, penv, version);
5446 #endif /* USDT2 */
5447 jint ret = JNI_ERR;
5448 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5449
5450 if (!vm_created) {
5451 *penv = NULL;
5452 ret = JNI_EDETACHED;
5453 return ret;
5454 }
5455
5456 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5457 return ret;
5458 }
5459
5460 #ifndef JVMPI_VERSION_1
5461 // need these in order to be polite about older agents
5462 #define JVMPI_VERSION_1 ((jint)0x10000001)
5463 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5464 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5465 #endif // !JVMPI_VERSION_1
5466
5467 Thread* thread = ThreadLocalStorage::thread();
5468 if (thread != NULL && thread->is_Java_thread()) {
5469 if (Threads::is_supported_jni_version_including_1_1(version)) {
5470 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5471 ret = JNI_OK;
5472 return ret;
5473
5474 } else if (version == JVMPI_VERSION_1 ||
5475 version == JVMPI_VERSION_1_1 ||
5476 version == JVMPI_VERSION_1_2) {
5477 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5478 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5479 ret = JNI_EVERSION;
5480 return ret;
5481 } else if (JvmtiExport::is_jvmdi_version(version)) {
5482 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5483 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5484 ret = JNI_EVERSION;
5485 return ret;
5486 } else {
5487 *penv = NULL;
5488 ret = JNI_EVERSION;
5489 return ret;
5490 }
5491 } else {
5492 *penv = NULL;
5493 ret = JNI_EDETACHED;
5494 return ret;
5495 }
5496 }
5497
5498
5499 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5500 #ifndef USDT2
5501 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5502 #else /* USDT2 */
5503 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5504 vm, penv, _args);
5505 #endif /* USDT2 */
5506 if (!vm_created) {
5507 #ifndef USDT2
5508 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5509 #else /* USDT2 */
5510 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5511 (uint32_t) JNI_ERR);
5512 #endif /* USDT2 */
5513 return JNI_ERR;
5514 }
5515
5516 JNIWrapper("AttachCurrentThreadAsDaemon");
5517 jint ret = attach_current_thread(vm, penv, _args, true);
5518 #ifndef USDT2
5519 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5520 #else /* USDT2 */
5521 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5522 ret);
5523 #endif /* USDT2 */
5524 return ret;
5525 }
5526
5527
5528 } // End extern "C"
5529
5530 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5531 NULL,
5532 NULL,
5533 NULL,
5534
5535 jni_DestroyJavaVM,
5536 jni_AttachCurrentThread,
5537 jni_DetachCurrentThread,
5538 jni_GetEnv,
5539 jni_AttachCurrentThreadAsDaemon
5540 };