Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiExport.cpp @ 8960:0ba33199edc0
invokedynamic: constant fold call site target with assumption; minor fixes
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 09 Apr 2013 20:37:06 +0200 |
parents | 3c9bc17b9403 |
children | 0b7f78069732 |
rev | line source |
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0 | 1 /* |
7951 | 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "code/nmethod.hpp" | |
28 #include "code/pcDesc.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "interpreter/interpreter.hpp" | |
31 #include "jvmtifiles/jvmtiEnv.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/objArrayOop.hpp" | |
35 #include "prims/jvmtiCodeBlobEvents.hpp" | |
36 #include "prims/jvmtiEventController.hpp" | |
37 #include "prims/jvmtiEventController.inline.hpp" | |
38 #include "prims/jvmtiExport.hpp" | |
39 #include "prims/jvmtiImpl.hpp" | |
40 #include "prims/jvmtiManageCapabilities.hpp" | |
41 #include "prims/jvmtiRawMonitor.hpp" | |
42 #include "prims/jvmtiTagMap.hpp" | |
43 #include "prims/jvmtiThreadState.inline.hpp" | |
44 #include "runtime/arguments.hpp" | |
45 #include "runtime/handles.hpp" | |
46 #include "runtime/interfaceSupport.hpp" | |
47 #include "runtime/objectMonitor.hpp" | |
48 #include "runtime/objectMonitor.inline.hpp" | |
49 #include "runtime/thread.hpp" | |
50 #include "runtime/vframe.hpp" | |
51 #include "services/attachListener.hpp" | |
52 #include "services/serviceUtil.hpp" | |
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53 #include "utilities/macros.hpp" |
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54 #if INCLUDE_ALL_GCS |
1972 | 55 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" |
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56 #endif // INCLUDE_ALL_GCS |
0 | 57 |
58 #ifdef JVMTI_TRACE | |
59 #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
60 #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
61 #else | |
62 #define EVT_TRIG_TRACE(evt,out) | |
63 #define EVT_TRACE(evt,out) | |
64 #endif | |
65 | |
66 /////////////////////////////////////////////////////////////// | |
67 // | |
68 // JvmtiEventTransition | |
69 // | |
70 // TO DO -- | |
71 // more handle purging | |
72 | |
73 // Use this for JavaThreads and state is _thread_in_vm. | |
74 class JvmtiJavaThreadEventTransition : StackObj { | |
75 private: | |
76 ResourceMark _rm; | |
77 ThreadToNativeFromVM _transition; | |
78 HandleMark _hm; | |
79 | |
80 public: | |
81 JvmtiJavaThreadEventTransition(JavaThread *thread) : | |
82 _rm(), | |
83 _transition(thread), | |
84 _hm(thread) {}; | |
85 }; | |
86 | |
87 // For JavaThreads which are not in _thread_in_vm state | |
88 // and other system threads use this. | |
89 class JvmtiThreadEventTransition : StackObj { | |
90 private: | |
91 ResourceMark _rm; | |
92 HandleMark _hm; | |
93 JavaThreadState _saved_state; | |
94 JavaThread *_jthread; | |
95 | |
96 public: | |
97 JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { | |
98 if (thread->is_Java_thread()) { | |
99 _jthread = (JavaThread *)thread; | |
100 _saved_state = _jthread->thread_state(); | |
101 if (_saved_state == _thread_in_Java) { | |
102 ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); | |
103 } else { | |
104 ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); | |
105 } | |
106 } else { | |
107 _jthread = NULL; | |
108 } | |
109 } | |
110 | |
111 ~JvmtiThreadEventTransition() { | |
112 if (_jthread != NULL) | |
113 ThreadStateTransition::transition_from_native(_jthread, _saved_state); | |
114 } | |
115 }; | |
116 | |
117 | |
118 /////////////////////////////////////////////////////////////// | |
119 // | |
120 // JvmtiEventMark | |
121 // | |
122 | |
123 class JvmtiEventMark : public StackObj { | |
124 private: | |
125 JavaThread *_thread; | |
126 JNIEnv* _jni_env; | |
127 bool _exception_detected; | |
128 bool _exception_caught; | |
129 #if 0 | |
130 JNIHandleBlock* _hblock; | |
131 #endif | |
132 | |
133 public: | |
134 JvmtiEventMark(JavaThread *thread) : _thread(thread), | |
135 _jni_env(thread->jni_environment()) { | |
136 #if 0 | |
137 _hblock = thread->active_handles(); | |
138 _hblock->clear_thoroughly(); // so we can be safe | |
139 #else | |
140 // we want to use the code above - but that needs the JNIHandle changes - later... | |
141 // for now, steal JNI push local frame code | |
142 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
143 // we are before an event. | |
144 // Save current jvmti thread exception state. | |
145 if (state != NULL) { | |
146 _exception_detected = state->is_exception_detected(); | |
147 _exception_caught = state->is_exception_caught(); | |
148 } else { | |
149 _exception_detected = false; | |
150 _exception_caught = false; | |
151 } | |
152 | |
153 JNIHandleBlock* old_handles = thread->active_handles(); | |
154 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
155 assert(new_handles != NULL, "should not be NULL"); | |
156 new_handles->set_pop_frame_link(old_handles); | |
157 thread->set_active_handles(new_handles); | |
158 #endif | |
159 assert(thread == JavaThread::current(), "thread must be current!"); | |
160 thread->frame_anchor()->make_walkable(thread); | |
161 }; | |
162 | |
163 ~JvmtiEventMark() { | |
164 #if 0 | |
165 _hblock->clear(); // for consistency with future correct behavior | |
166 #else | |
167 // we want to use the code above - but that needs the JNIHandle changes - later... | |
168 // for now, steal JNI pop local frame code | |
169 JNIHandleBlock* old_handles = _thread->active_handles(); | |
170 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); | |
171 assert(new_handles != NULL, "should not be NULL"); | |
172 _thread->set_active_handles(new_handles); | |
173 // Note that we set the pop_frame_link to NULL explicitly, otherwise | |
174 // the release_block call will release the blocks. | |
175 old_handles->set_pop_frame_link(NULL); | |
176 JNIHandleBlock::release_block(old_handles, _thread); // may block | |
177 #endif | |
178 | |
179 JvmtiThreadState* state = _thread->jvmti_thread_state(); | |
180 // we are continuing after an event. | |
181 if (state != NULL) { | |
182 // Restore the jvmti thread exception state. | |
183 if (_exception_detected) { | |
184 state->set_exception_detected(); | |
185 } | |
186 if (_exception_caught) { | |
187 state->set_exception_caught(); | |
188 } | |
189 } | |
190 } | |
191 | |
192 #if 0 | |
193 jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } | |
194 #else | |
195 // we want to use the code above - but that needs the JNIHandle changes - later... | |
196 // for now, use regular make_local | |
197 jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } | |
198 #endif | |
199 | |
6983 | 200 jclass to_jclass(Klass* klass) { return (klass == NULL ? NULL : (jclass)to_jobject(klass->java_mirror())); } |
0 | 201 |
202 jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } | |
203 | |
204 JNIEnv* jni_env() { return _jni_env; } | |
205 }; | |
206 | |
207 class JvmtiThreadEventMark : public JvmtiEventMark { | |
208 private: | |
209 jthread _jt; | |
210 | |
211 public: | |
212 JvmtiThreadEventMark(JavaThread *thread) : | |
213 JvmtiEventMark(thread) { | |
214 _jt = (jthread)(to_jobject(thread->threadObj())); | |
215 }; | |
216 jthread jni_thread() { return _jt; } | |
217 }; | |
218 | |
219 class JvmtiClassEventMark : public JvmtiThreadEventMark { | |
220 private: | |
221 jclass _jc; | |
222 | |
223 public: | |
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224 JvmtiClassEventMark(JavaThread *thread, Klass* klass) : |
0 | 225 JvmtiThreadEventMark(thread) { |
226 _jc = to_jclass(klass); | |
227 }; | |
228 jclass jni_class() { return _jc; } | |
229 }; | |
230 | |
231 class JvmtiMethodEventMark : public JvmtiThreadEventMark { | |
232 private: | |
233 jmethodID _mid; | |
234 | |
235 public: | |
236 JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : | |
237 JvmtiThreadEventMark(thread), | |
238 _mid(to_jmethodID(method)) {}; | |
239 jmethodID jni_methodID() { return _mid; } | |
240 }; | |
241 | |
242 class JvmtiLocationEventMark : public JvmtiMethodEventMark { | |
243 private: | |
244 jlocation _loc; | |
245 | |
246 public: | |
247 JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : | |
248 JvmtiMethodEventMark(thread, method), | |
249 _loc(location - method->code_base()) {}; | |
250 jlocation location() { return _loc; } | |
251 }; | |
252 | |
253 class JvmtiExceptionEventMark : public JvmtiLocationEventMark { | |
254 private: | |
255 jobject _exc; | |
256 | |
257 public: | |
258 JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : | |
259 JvmtiLocationEventMark(thread, method, location), | |
260 _exc(to_jobject(exception())) {}; | |
261 jobject exception() { return _exc; } | |
262 }; | |
263 | |
264 class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { | |
265 private: | |
266 const char *_class_name; | |
267 jobject _jloader; | |
268 jobject _protection_domain; | |
269 jclass _class_being_redefined; | |
270 | |
271 public: | |
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272 JvmtiClassFileLoadEventMark(JavaThread *thread, Symbol* name, |
0 | 273 Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { |
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274 _class_name = name != NULL? name->as_utf8() : NULL; |
0 | 275 _jloader = (jobject)to_jobject(class_loader()); |
276 _protection_domain = (jobject)to_jobject(prot_domain()); | |
277 if (class_being_redefined == NULL) { | |
278 _class_being_redefined = NULL; | |
279 } else { | |
280 _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); | |
281 } | |
282 }; | |
283 const char *class_name() { | |
284 return _class_name; | |
285 } | |
286 jobject jloader() { | |
287 return _jloader; | |
288 } | |
289 jobject protection_domain() { | |
290 return _protection_domain; | |
291 } | |
292 jclass class_being_redefined() { | |
293 return _class_being_redefined; | |
294 } | |
295 }; | |
296 | |
297 ////////////////////////////////////////////////////////////////////////////// | |
298 | |
299 int JvmtiExport::_field_access_count = 0; | |
300 int JvmtiExport::_field_modification_count = 0; | |
301 | |
302 bool JvmtiExport::_can_access_local_variables = false; | |
303 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
304 bool JvmtiExport::_can_modify_any_class = false; | |
305 bool JvmtiExport::_can_walk_any_space = false; | |
306 | |
307 bool JvmtiExport::_has_redefined_a_class = false; | |
308 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
309 | |
310 // | |
311 // field access management | |
312 // | |
313 | |
314 // interpreter generator needs the address of the counter | |
315 address JvmtiExport::get_field_access_count_addr() { | |
316 // We don't grab a lock because we don't want to | |
317 // serialize field access between all threads. This means that a | |
318 // thread on another processor can see the wrong count value and | |
319 // may either miss making a needed call into post_field_access() | |
320 // or will make an unneeded call into post_field_access(). We pay | |
321 // this price to avoid slowing down the VM when we aren't watching | |
322 // field accesses. | |
323 // Other access/mutation safe by virtue of being in VM state. | |
324 return (address)(&_field_access_count); | |
325 } | |
326 | |
327 // | |
328 // field modification management | |
329 // | |
330 | |
331 // interpreter generator needs the address of the counter | |
332 address JvmtiExport::get_field_modification_count_addr() { | |
333 // We don't grab a lock because we don't | |
334 // want to serialize field modification between all threads. This | |
335 // means that a thread on another processor can see the wrong | |
336 // count value and may either miss making a needed call into | |
337 // post_field_modification() or will make an unneeded call into | |
338 // post_field_modification(). We pay this price to avoid slowing | |
339 // down the VM when we aren't watching field modifications. | |
340 // Other access/mutation safe by virtue of being in VM state. | |
341 return (address)(&_field_modification_count); | |
342 } | |
343 | |
344 | |
345 /////////////////////////////////////////////////////////////// | |
346 // Functions needed by java.lang.instrument for starting up javaagent. | |
347 /////////////////////////////////////////////////////////////// | |
348 | |
349 jint | |
350 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
1121 | 351 // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
352 // has already been validated in JNI GetEnv(). | |
353 int major, minor, micro; | |
354 | |
355 // micro version doesn't matter here (yet?) | |
356 decode_version_values(version, &major, &minor, µ); | |
357 switch (major) { | |
1988 | 358 case 1: |
1121 | 359 switch (minor) { |
1988 | 360 case 0: // version 1.0.<micro> is recognized |
361 case 1: // version 1.1.<micro> is recognized | |
362 case 2: // version 1.2.<micro> is recognized | |
1121 | 363 break; |
364 | |
1988 | 365 default: |
1121 | 366 return JNI_EVERSION; // unsupported minor version number |
367 } | |
368 break; | |
1988 | 369 default: |
1121 | 370 return JNI_EVERSION; // unsupported major version number |
371 } | |
0 | 372 |
373 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
374 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
375 // transition code: native to VM | |
376 ThreadInVMfromNative __tiv(current_thread); | |
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377 VM_ENTRY_BASE(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) |
0 | 378 debug_only(VMNativeEntryWrapper __vew;) |
379 | |
1121 | 380 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 381 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
382 return JNI_OK; | |
383 | |
384 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
385 // not live, no thread to transition | |
1121 | 386 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 387 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
388 return JNI_OK; | |
389 | |
390 } else { | |
391 // Called at the wrong time | |
392 *penv = NULL; | |
393 return JNI_EDETACHED; | |
394 } | |
395 } | |
396 | |
1121 | 397 |
398 void | |
399 JvmtiExport::decode_version_values(jint version, int * major, int * minor, | |
400 int * micro) { | |
401 *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; | |
402 *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; | |
403 *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; | |
404 } | |
405 | |
0 | 406 void JvmtiExport::enter_primordial_phase() { |
407 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
408 } | |
409 | |
410 void JvmtiExport::enter_start_phase() { | |
411 JvmtiManageCapabilities::recompute_always_capabilities(); | |
412 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
413 } | |
414 | |
415 void JvmtiExport::enter_onload_phase() { | |
416 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
417 } | |
418 | |
419 void JvmtiExport::enter_live_phase() { | |
420 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
421 } | |
422 | |
423 // | |
424 // JVMTI events that the VM posts to the debugger and also startup agent | |
425 // and call the agent's premain() for java.lang.instrument. | |
426 // | |
427 | |
428 void JvmtiExport::post_vm_start() { | |
429 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
430 | |
431 // can now enable some events | |
432 JvmtiEventController::vm_start(); | |
433 | |
434 JvmtiEnvIterator it; | |
435 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
436 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
437 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
438 | |
439 JavaThread *thread = JavaThread::current(); | |
440 JvmtiThreadEventMark jem(thread); | |
441 JvmtiJavaThreadEventTransition jet(thread); | |
442 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
443 if (callback != NULL) { | |
444 (*callback)(env->jvmti_external(), jem.jni_env()); | |
445 } | |
446 } | |
447 } | |
448 } | |
449 | |
450 | |
451 void JvmtiExport::post_vm_initialized() { | |
452 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
453 | |
454 // can now enable events | |
455 JvmtiEventController::vm_init(); | |
456 | |
457 JvmtiEnvIterator it; | |
458 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
459 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
460 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
461 | |
462 JavaThread *thread = JavaThread::current(); | |
463 JvmtiThreadEventMark jem(thread); | |
464 JvmtiJavaThreadEventTransition jet(thread); | |
465 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
466 if (callback != NULL) { | |
467 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
468 } | |
469 } | |
470 } | |
471 } | |
472 | |
473 | |
474 void JvmtiExport::post_vm_death() { | |
475 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
476 | |
477 JvmtiEnvIterator it; | |
478 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
479 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
480 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
481 | |
482 JavaThread *thread = JavaThread::current(); | |
483 JvmtiEventMark jem(thread); | |
484 JvmtiJavaThreadEventTransition jet(thread); | |
485 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
486 if (callback != NULL) { | |
487 (*callback)(env->jvmti_external(), jem.jni_env()); | |
488 } | |
489 } | |
490 } | |
491 | |
492 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
493 JvmtiEventController::vm_death(); | |
494 } | |
495 | |
496 char** | |
497 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
498 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
499 // go away while we iterate them. No locks during VM bring-up. | |
500 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
501 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
502 } else { | |
503 MutexLocker mu(JvmtiThreadState_lock); | |
504 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
505 } | |
506 } | |
507 | |
508 class JvmtiClassFileLoadHookPoster : public StackObj { | |
509 private: | |
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510 Symbol* _h_name; |
0 | 511 Handle _class_loader; |
512 Handle _h_protection_domain; | |
513 unsigned char ** _data_ptr; | |
514 unsigned char ** _end_ptr; | |
515 JavaThread * _thread; | |
516 jint _curr_len; | |
517 unsigned char * _curr_data; | |
518 JvmtiEnv * _curr_env; | |
519 jint * _cached_length_ptr; | |
520 unsigned char ** _cached_data_ptr; | |
521 JvmtiThreadState * _state; | |
522 KlassHandle * _h_class_being_redefined; | |
523 JvmtiClassLoadKind _load_kind; | |
524 | |
525 public: | |
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526 inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
0 | 527 Handle h_protection_domain, |
528 unsigned char **data_ptr, unsigned char **end_ptr, | |
529 unsigned char **cached_data_ptr, | |
530 jint *cached_length_ptr) { | |
531 _h_name = h_name; | |
532 _class_loader = class_loader; | |
533 _h_protection_domain = h_protection_domain; | |
534 _data_ptr = data_ptr; | |
535 _end_ptr = end_ptr; | |
536 _thread = JavaThread::current(); | |
537 _curr_len = *end_ptr - *data_ptr; | |
538 _curr_data = *data_ptr; | |
539 _curr_env = NULL; | |
540 _cached_length_ptr = cached_length_ptr; | |
541 _cached_data_ptr = cached_data_ptr; | |
542 | |
543 _state = _thread->jvmti_thread_state(); | |
544 if (_state != NULL) { | |
545 _h_class_being_redefined = _state->get_class_being_redefined(); | |
546 _load_kind = _state->get_class_load_kind(); | |
547 // Clear class_being_redefined flag here. The action | |
548 // from agent handler could generate a new class file load | |
549 // hook event and if it is not cleared the new event generated | |
550 // from regular class file load could have this stale redefined | |
551 // class handle info. | |
552 _state->clear_class_being_redefined(); | |
553 } else { | |
554 // redefine and retransform will always set the thread state | |
555 _h_class_being_redefined = (KlassHandle *) NULL; | |
556 _load_kind = jvmti_class_load_kind_load; | |
557 } | |
558 } | |
559 | |
560 void post() { | |
561 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
562 // ("JVMTI [%s] class file load hook event triggered", | |
563 // JvmtiTrace::safe_get_thread_name(_thread))); | |
564 post_all_envs(); | |
565 copy_modified_data(); | |
566 } | |
567 | |
568 private: | |
569 void post_all_envs() { | |
570 if (_load_kind != jvmti_class_load_kind_retransform) { | |
571 // for class load and redefine, | |
572 // call the non-retransformable agents | |
573 JvmtiEnvIterator it; | |
574 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
575 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
576 // non-retransformable agents cannot retransform back, | |
577 // so no need to cache the original class file bytes | |
578 post_to_env(env, false); | |
579 } | |
580 } | |
581 } | |
582 JvmtiEnvIterator it; | |
583 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
584 // retransformable agents get all events | |
585 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
586 // retransformable agents need to cache the original class file | |
587 // bytes if changes are made via the ClassFileLoadHook | |
588 post_to_env(env, true); | |
589 } | |
590 } | |
591 } | |
592 | |
593 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
594 unsigned char *new_data = NULL; | |
595 jint new_len = 0; | |
596 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
597 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
598 // JvmtiTrace::safe_get_thread_name(_thread), | |
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599 // _h_name == NULL ? "NULL" : _h_name->as_utf8(), |
0 | 600 // _curr_data, _curr_len )); |
601 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
602 _h_protection_domain, | |
603 _h_class_being_redefined); | |
604 JvmtiJavaThreadEventTransition jet(_thread); | |
605 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
606 NULL : jem.jni_env(); | |
607 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
608 if (callback != NULL) { | |
609 (*callback)(env->jvmti_external(), jni_env, | |
610 jem.class_being_redefined(), | |
611 jem.jloader(), jem.class_name(), | |
612 jem.protection_domain(), | |
613 _curr_len, _curr_data, | |
614 &new_len, &new_data); | |
615 } | |
616 if (new_data != NULL) { | |
617 // this agent has modified class data. | |
618 if (caching_needed && *_cached_data_ptr == NULL) { | |
619 // data has been changed by the new retransformable agent | |
620 // and it hasn't already been cached, cache it | |
6197 | 621 *_cached_data_ptr = (unsigned char *)os::malloc(_curr_len, mtInternal); |
0 | 622 memcpy(*_cached_data_ptr, _curr_data, _curr_len); |
623 *_cached_length_ptr = _curr_len; | |
624 } | |
625 | |
626 if (_curr_data != *_data_ptr) { | |
627 // curr_data is previous agent modified class data. | |
628 // And this has been changed by the new agent so | |
629 // we can delete it now. | |
630 _curr_env->Deallocate(_curr_data); | |
631 } | |
632 | |
633 // Class file data has changed by the current agent. | |
634 _curr_data = new_data; | |
635 _curr_len = new_len; | |
636 // Save the current agent env we need this to deallocate the | |
637 // memory allocated by this agent. | |
638 _curr_env = env; | |
639 } | |
640 } | |
641 | |
642 void copy_modified_data() { | |
643 // if one of the agent has modified class file data. | |
644 // Copy modified class data to new resources array. | |
645 if (_curr_data != *_data_ptr) { | |
646 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
647 memcpy(*_data_ptr, _curr_data, _curr_len); | |
648 *_end_ptr = *_data_ptr + _curr_len; | |
649 _curr_env->Deallocate(_curr_data); | |
650 } | |
651 } | |
652 }; | |
653 | |
654 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
655 | |
656 // this entry is for class file load hook on class load, redefine and retransform | |
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657 void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
0 | 658 Handle class_loader, |
659 Handle h_protection_domain, | |
660 unsigned char **data_ptr, | |
661 unsigned char **end_ptr, | |
662 unsigned char **cached_data_ptr, | |
663 jint *cached_length_ptr) { | |
664 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, | |
665 h_protection_domain, | |
666 data_ptr, end_ptr, | |
667 cached_data_ptr, | |
668 cached_length_ptr); | |
669 poster.post(); | |
670 } | |
671 | |
672 void JvmtiExport::report_unsupported(bool on) { | |
673 // If any JVMTI service is turned on, we need to exit before native code | |
674 // tries to access nonexistant services. | |
675 if (on) { | |
676 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
677 } | |
678 } | |
679 | |
680 | |
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681 static inline Klass* oop_to_klass(oop obj) { |
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682 Klass* k = obj->klass(); |
0 | 683 |
684 // if the object is a java.lang.Class then return the java mirror | |
1142 | 685 if (k == SystemDictionary::Class_klass()) { |
0 | 686 if (!java_lang_Class::is_primitive(obj)) { |
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687 k = java_lang_Class::as_Klass(obj); |
0 | 688 assert(k != NULL, "class for non-primitive mirror must exist"); |
689 } | |
690 } | |
691 return k; | |
692 } | |
693 | |
694 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
695 private: | |
696 jobject _jobj; | |
697 jlong _size; | |
698 public: | |
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699 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klass(obj)) { |
0 | 700 _jobj = (jobject)to_jobject(obj); |
701 _size = obj->size() * wordSize; | |
702 }; | |
703 jobject jni_jobject() { return _jobj; } | |
704 jlong size() { return _size; } | |
705 }; | |
706 | |
707 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
708 private: | |
709 jint _code_size; | |
710 const void *_code_data; | |
711 jint _map_length; | |
712 jvmtiAddrLocationMap *_map; | |
713 const void *_compile_info; | |
714 public: | |
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715 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
0 | 716 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
1748 | 717 _code_data = nm->insts_begin(); |
718 _code_size = nm->insts_size(); | |
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719 _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
0 | 720 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
721 } | |
722 ~JvmtiCompiledMethodLoadEventMark() { | |
6197 | 723 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map, mtInternal); |
0 | 724 } |
725 | |
726 jint code_size() { return _code_size; } | |
727 const void *code_data() { return _code_data; } | |
728 jint map_length() { return _map_length; } | |
729 const jvmtiAddrLocationMap* map() { return _map; } | |
730 const void *compile_info() { return _compile_info; } | |
731 }; | |
732 | |
733 | |
734 | |
735 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
736 private: | |
737 jobject _jobj; | |
738 public: | |
739 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
740 : JvmtiThreadEventMark(thread){ | |
741 _jobj = to_jobject(object); | |
742 } | |
743 jobject jni_object() { return _jobj; } | |
744 }; | |
745 | |
746 /////////////////////////////////////////////////////////////// | |
747 // | |
748 // pending CompiledMethodUnload support | |
749 // | |
750 | |
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751 void JvmtiExport::post_compiled_method_unload( |
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752 jmethodID method, const void *code_begin) { |
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753 JavaThread* thread = JavaThread::current(); |
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754 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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755 ("JVMTI [%s] method compile unload event triggered", |
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756 JvmtiTrace::safe_get_thread_name(thread))); |
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757 |
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758 // post the event for each environment that has this event enabled. |
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759 JvmtiEnvIterator it; |
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760 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
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761 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
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762 |
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763 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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764 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
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765 JvmtiTrace::safe_get_thread_name(thread), method)); |
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766 |
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767 ResourceMark rm(thread); |
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768 |
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769 JvmtiEventMark jem(thread); |
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770 JvmtiJavaThreadEventTransition jet(thread); |
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771 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
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772 if (callback != NULL) { |
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773 (*callback)(env->jvmti_external(), method, code_begin); |
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774 } |
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775 } |
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776 } |
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777 } |
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778 |
0 | 779 /////////////////////////////////////////////////////////////// |
780 // | |
781 // JvmtiExport | |
782 // | |
783 | |
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784 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, Method* method, address location) { |
0 | 785 HandleMark hm(thread); |
786 methodHandle mh(thread, method); | |
787 | |
788 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
789 if (state == NULL) { | |
790 return; | |
791 } | |
792 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
793 JvmtiTrace::safe_get_thread_name(thread))); | |
794 JvmtiEnvThreadStateIterator it(state); | |
795 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
796 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
797 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
798 ThreadState old_os_state = thread->osthread()->get_state(); | |
799 thread->osthread()->set_state(BREAKPOINTED); | |
800 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
801 JvmtiTrace::safe_get_thread_name(thread), | |
802 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
803 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
804 location - mh()->code_base() )); | |
805 | |
806 JvmtiEnv *env = ets->get_env(); | |
807 JvmtiLocationEventMark jem(thread, mh, location); | |
808 JvmtiJavaThreadEventTransition jet(thread); | |
809 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
810 if (callback != NULL) { | |
811 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
812 jem.jni_methodID(), jem.location()); | |
813 } | |
814 | |
815 ets->set_breakpoint_posted(); | |
816 thread->osthread()->set_state(old_os_state); | |
817 } | |
818 } | |
819 } | |
820 | |
821 ////////////////////////////////////////////////////////////////////////////// | |
822 | |
823 bool JvmtiExport::_can_get_source_debug_extension = false; | |
824 bool JvmtiExport::_can_maintain_original_method_order = false; | |
825 bool JvmtiExport::_can_post_interpreter_events = false; | |
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826 bool JvmtiExport::_can_post_on_exceptions = false; |
0 | 827 bool JvmtiExport::_can_post_breakpoint = false; |
828 bool JvmtiExport::_can_post_field_access = false; | |
829 bool JvmtiExport::_can_post_field_modification = false; | |
830 bool JvmtiExport::_can_post_method_entry = false; | |
831 bool JvmtiExport::_can_post_method_exit = false; | |
832 bool JvmtiExport::_can_pop_frame = false; | |
833 bool JvmtiExport::_can_force_early_return = false; | |
834 | |
835 bool JvmtiExport::_should_post_single_step = false; | |
836 bool JvmtiExport::_should_post_field_access = false; | |
837 bool JvmtiExport::_should_post_field_modification = false; | |
838 bool JvmtiExport::_should_post_class_load = false; | |
839 bool JvmtiExport::_should_post_class_prepare = false; | |
840 bool JvmtiExport::_should_post_class_unload = false; | |
841 bool JvmtiExport::_should_post_thread_life = false; | |
842 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
843 bool JvmtiExport::_should_post_native_method_bind = false; | |
844 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
845 bool JvmtiExport::_should_post_data_dump = false; | |
846 bool JvmtiExport::_should_post_compiled_method_load = false; | |
847 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
848 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
849 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
850 bool JvmtiExport::_should_post_monitor_wait = false; | |
851 bool JvmtiExport::_should_post_monitor_waited = false; | |
852 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
853 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
854 bool JvmtiExport::_should_post_object_free = false; | |
855 bool JvmtiExport::_should_post_resource_exhausted = false; | |
856 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
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857 bool JvmtiExport::_should_post_on_exceptions = false; |
0 | 858 |
859 //////////////////////////////////////////////////////////////////////////////////////////////// | |
860 | |
861 | |
862 // | |
863 // JVMTI single step management | |
864 // | |
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865 void JvmtiExport::at_single_stepping_point(JavaThread *thread, Method* method, address location) { |
0 | 866 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); |
867 | |
868 HandleMark hm(thread); | |
869 methodHandle mh(thread, method); | |
870 | |
871 // update information about current location and post a step event | |
872 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
873 if (state == NULL) { | |
874 return; | |
875 } | |
876 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
877 JvmtiTrace::safe_get_thread_name(thread))); | |
878 if (!state->hide_single_stepping()) { | |
879 if (state->is_pending_step_for_popframe()) { | |
880 state->process_pending_step_for_popframe(); | |
881 } | |
882 if (state->is_pending_step_for_earlyret()) { | |
883 state->process_pending_step_for_earlyret(); | |
884 } | |
885 JvmtiExport::post_single_step(thread, mh(), location); | |
886 } | |
887 } | |
888 | |
889 | |
890 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
891 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
892 if (state != NULL) { | |
893 state->clear_hide_single_stepping(); | |
894 } | |
895 } | |
896 | |
897 | |
898 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
899 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
900 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
901 state->set_hide_single_stepping(); | |
902 return true; | |
903 } else { | |
904 return false; | |
905 } | |
906 } | |
907 | |
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908 void JvmtiExport::post_class_load(JavaThread *thread, Klass* klass) { |
0 | 909 HandleMark hm(thread); |
910 KlassHandle kh(thread, klass); | |
911 | |
912 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
913 JvmtiTrace::safe_get_thread_name(thread))); | |
914 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
915 if (state == NULL) { | |
916 return; | |
917 } | |
918 JvmtiEnvThreadStateIterator it(state); | |
919 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
920 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
921 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
922 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 923 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 924 |
925 JvmtiEnv *env = ets->get_env(); | |
926 JvmtiClassEventMark jem(thread, kh()); | |
927 JvmtiJavaThreadEventTransition jet(thread); | |
928 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
929 if (callback != NULL) { | |
930 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
931 } | |
932 } | |
933 } | |
934 } | |
935 | |
936 | |
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937 void JvmtiExport::post_class_prepare(JavaThread *thread, Klass* klass) { |
0 | 938 HandleMark hm(thread); |
939 KlassHandle kh(thread, klass); | |
940 | |
941 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
942 JvmtiTrace::safe_get_thread_name(thread))); | |
943 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
944 if (state == NULL) { | |
945 return; | |
946 } | |
947 JvmtiEnvThreadStateIterator it(state); | |
948 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
949 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
950 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
951 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 952 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 953 |
954 JvmtiEnv *env = ets->get_env(); | |
955 JvmtiClassEventMark jem(thread, kh()); | |
956 JvmtiJavaThreadEventTransition jet(thread); | |
957 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
958 if (callback != NULL) { | |
959 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
960 } | |
961 } | |
962 } | |
963 } | |
964 | |
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965 void JvmtiExport::post_class_unload(Klass* klass) { |
0 | 966 Thread *thread = Thread::current(); |
967 HandleMark hm(thread); | |
968 KlassHandle kh(thread, klass); | |
969 | |
970 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
971 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
972 assert(thread->is_VM_thread(), "wrong thread"); | |
973 | |
974 // get JavaThread for whom we are proxy | |
975 JavaThread *real_thread = | |
976 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
977 | |
978 JvmtiEnvIterator it; | |
979 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
980 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
981 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
6983 | 982 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 983 |
984 // do everything manually, since this is a proxy - needs special care | |
985 JNIEnv* jni_env = real_thread->jni_environment(); | |
986 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
6983 | 987 jclass jk = (jclass)JNIHandles::make_local(real_thread, kh()->java_mirror()); |
0 | 988 |
989 // Before we call the JVMTI agent, we have to set the state in the | |
990 // thread for which we are proxying. | |
991 JavaThreadState prev_state = real_thread->thread_state(); | |
992 assert(prev_state == _thread_blocked, "JavaThread should be at safepoint"); | |
993 real_thread->set_thread_state(_thread_in_native); | |
994 | |
995 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
996 if (callback != NULL) { | |
997 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
998 } | |
999 | |
1000 assert(real_thread->thread_state() == _thread_in_native, | |
1001 "JavaThread should be in native"); | |
1002 real_thread->set_thread_state(prev_state); | |
1003 | |
1004 JNIHandles::destroy_local(jk); | |
1005 JNIHandles::destroy_local(jt); | |
1006 } | |
1007 } | |
1008 } | |
1009 } | |
1010 | |
1011 | |
1012 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
1013 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1014 | |
1015 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
1016 JvmtiTrace::safe_get_thread_name(thread))); | |
1017 | |
1018 // do JVMTI thread initialization (if needed) | |
1019 JvmtiEventController::thread_started(thread); | |
1020 | |
1021 // Do not post thread start event for hidden java thread. | |
1022 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
1023 !thread->is_hidden_from_external_view()) { | |
1024 JvmtiEnvIterator it; | |
1025 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1026 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
1027 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
1028 JvmtiTrace::safe_get_thread_name(thread) )); | |
1029 | |
1030 JvmtiThreadEventMark jem(thread); | |
1031 JvmtiJavaThreadEventTransition jet(thread); | |
1032 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
1033 if (callback != NULL) { | |
1034 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1035 } | |
1036 } | |
1037 } | |
1038 } | |
1039 } | |
1040 | |
1041 | |
1042 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
1043 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
1044 JvmtiTrace::safe_get_thread_name(thread))); | |
1045 | |
1046 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1047 if (state == NULL) { | |
1048 return; | |
1049 } | |
1050 | |
1051 // Do not post thread end event for hidden java thread. | |
1052 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
1053 !thread->is_hidden_from_external_view()) { | |
1054 | |
1055 JvmtiEnvThreadStateIterator it(state); | |
1056 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1057 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
1058 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
1059 JvmtiTrace::safe_get_thread_name(thread) )); | |
1060 | |
1061 JvmtiEnv *env = ets->get_env(); | |
1062 JvmtiThreadEventMark jem(thread); | |
1063 JvmtiJavaThreadEventTransition jet(thread); | |
1064 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
1065 if (callback != NULL) { | |
1066 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1067 } | |
1068 } | |
1069 } | |
1070 } | |
1071 } | |
1072 | |
1073 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
1074 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
1075 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
1076 | |
1077 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
1078 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
1079 | |
1080 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
1081 if (callback != NULL) { | |
1082 (*callback)(env->jvmti_external(), tag); | |
1083 } | |
1084 } | |
1085 | |
1086 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
1087 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
1088 | |
1089 JvmtiEnvIterator it; | |
1090 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1091 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
1092 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
1093 | |
1094 JavaThread *thread = JavaThread::current(); | |
1095 JvmtiThreadEventMark jem(thread); | |
1096 JvmtiJavaThreadEventTransition jet(thread); | |
1097 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
1098 if (callback != NULL) { | |
1099 (*callback)(env->jvmti_external(), jem.jni_env(), | |
1100 resource_exhausted_flags, NULL, description); | |
1101 } | |
1102 } | |
1103 } | |
1104 } | |
1105 | |
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1106 void JvmtiExport::post_method_entry(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1107 HandleMark hm(thread); |
1108 methodHandle mh(thread, method); | |
1109 | |
1110 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
1111 JvmtiTrace::safe_get_thread_name(thread), | |
1112 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1113 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1114 | |
1115 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1116 if (state == NULL || !state->is_interp_only_mode()) { | |
1117 // for any thread that actually wants method entry, interp_only_mode is set | |
1118 return; | |
1119 } | |
1120 | |
1121 state->incr_cur_stack_depth(); | |
1122 | |
1123 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1124 JvmtiEnvThreadStateIterator it(state); | |
1125 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1126 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1127 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
1128 JvmtiTrace::safe_get_thread_name(thread), | |
1129 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1130 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1131 | |
1132 JvmtiEnv *env = ets->get_env(); | |
1133 JvmtiMethodEventMark jem(thread, mh); | |
1134 JvmtiJavaThreadEventTransition jet(thread); | |
1135 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
1136 if (callback != NULL) { | |
1137 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
1138 } | |
1139 } | |
1140 } | |
1141 } | |
1142 } | |
1143 | |
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1144 void JvmtiExport::post_method_exit(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1145 HandleMark hm(thread); |
1146 methodHandle mh(thread, method); | |
1147 | |
1148 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
1149 JvmtiTrace::safe_get_thread_name(thread), | |
1150 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1151 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1152 | |
1153 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1154 if (state == NULL || !state->is_interp_only_mode()) { | |
1155 // for any thread that actually wants method exit, interp_only_mode is set | |
1156 return; | |
1157 } | |
1158 | |
1159 // return a flag when a method terminates by throwing an exception | |
1160 // i.e. if an exception is thrown and it's not caught by the current method | |
1161 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
1162 | |
1163 | |
1164 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1165 Handle result; | |
1166 jvalue value; | |
1167 value.j = 0L; | |
1168 | |
1169 // if the method hasn't been popped because of an exception then we populate | |
1170 // the return_value parameter for the callback. At this point we only have | |
1171 // the address of a "raw result" and we just call into the interpreter to | |
1172 // convert this into a jvalue. | |
1173 if (!exception_exit) { | |
1174 oop oop_result; | |
1175 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
1176 if (type == T_OBJECT || type == T_ARRAY) { | |
1177 result = Handle(thread, oop_result); | |
1178 } | |
1179 } | |
1180 | |
1181 JvmtiEnvThreadStateIterator it(state); | |
1182 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1183 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1184 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", | |
1185 JvmtiTrace::safe_get_thread_name(thread), | |
1186 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1187 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1188 | |
1189 JvmtiEnv *env = ets->get_env(); | |
1190 JvmtiMethodEventMark jem(thread, mh); | |
1191 if (result.not_null()) { | |
1192 value.l = JNIHandles::make_local(thread, result()); | |
1193 } | |
1194 JvmtiJavaThreadEventTransition jet(thread); | |
1195 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
1196 if (callback != NULL) { | |
1197 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1198 jem.jni_methodID(), exception_exit, value); | |
1199 } | |
1200 } | |
1201 } | |
1202 } | |
1203 | |
1204 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1205 JvmtiEnvThreadStateIterator it(state); | |
1206 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1207 int cur_frame_number = state->cur_stack_depth(); | |
1208 | |
1209 if (ets->is_frame_pop(cur_frame_number)) { | |
1210 // we have a NotifyFramePop entry for this frame. | |
1211 // now check that this env/thread wants this event | |
1212 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1213 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
1214 JvmtiTrace::safe_get_thread_name(thread), | |
1215 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1216 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1217 | |
1218 // we also need to issue a frame pop event for this frame | |
1219 JvmtiEnv *env = ets->get_env(); | |
1220 JvmtiMethodEventMark jem(thread, mh); | |
1221 JvmtiJavaThreadEventTransition jet(thread); | |
1222 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
1223 if (callback != NULL) { | |
1224 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1225 jem.jni_methodID(), exception_exit); | |
1226 } | |
1227 } | |
1228 // remove the frame's entry | |
1229 ets->clear_frame_pop(cur_frame_number); | |
1230 } | |
1231 } | |
1232 } | |
1233 | |
1234 state->decr_cur_stack_depth(); | |
1235 } | |
1236 | |
1237 | |
1238 // Todo: inline this for optimization | |
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1239 void JvmtiExport::post_single_step(JavaThread *thread, Method* method, address location) { |
0 | 1240 HandleMark hm(thread); |
1241 methodHandle mh(thread, method); | |
1242 | |
1243 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1244 if (state == NULL) { | |
1245 return; | |
1246 } | |
1247 JvmtiEnvThreadStateIterator it(state); | |
1248 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1249 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
1250 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
1251 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
1252 JvmtiTrace::safe_get_thread_name(thread), | |
1253 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1254 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1255 location - mh()->code_base() )); | |
1256 | |
1257 JvmtiEnv *env = ets->get_env(); | |
1258 JvmtiLocationEventMark jem(thread, mh, location); | |
1259 JvmtiJavaThreadEventTransition jet(thread); | |
1260 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
1261 if (callback != NULL) { | |
1262 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1263 jem.jni_methodID(), jem.location()); | |
1264 } | |
1265 | |
1266 ets->set_single_stepping_posted(); | |
1267 } | |
1268 } | |
1269 } | |
1270 | |
1271 | |
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1272 void JvmtiExport::post_exception_throw(JavaThread *thread, Method* method, address location, oop exception) { |
0 | 1273 HandleMark hm(thread); |
1274 methodHandle mh(thread, method); | |
1275 Handle exception_handle(thread, exception); | |
1276 | |
1277 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1278 if (state == NULL) { | |
1279 return; | |
1280 } | |
1281 | |
1282 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
1283 JvmtiTrace::safe_get_thread_name(thread))); | |
1284 if (!state->is_exception_detected()) { | |
1285 state->set_exception_detected(); | |
1286 JvmtiEnvThreadStateIterator it(state); | |
1287 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1288 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
1289 | |
1290 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
1291 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
1292 JvmtiTrace::safe_get_thread_name(thread), | |
1293 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1294 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1295 location - mh()->code_base() )); | |
1296 | |
1297 JvmtiEnv *env = ets->get_env(); | |
1298 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1299 | |
1300 // It's okay to clear these exceptions here because we duplicate | |
1301 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
1302 EXCEPTION_MARK; | |
1303 | |
1304 bool should_repeat; | |
1305 vframeStream st(thread); | |
1306 assert(!st.at_end(), "cannot be at end"); | |
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1307 Method* current_method = NULL; |
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1308 // A GC may occur during the Method::fast_exception_handler_bci_for() |
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1309 // call below if it needs to load the constraint class. Using a |
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1310 // methodHandle to keep the 'current_method' from being deallocated |
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1311 // if GC happens. |
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1312 methodHandle current_mh = methodHandle(thread, current_method); |
0 | 1313 int current_bci = -1; |
1314 do { | |
1315 current_method = st.method(); | |
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1316 current_mh = methodHandle(thread, current_method); |
0 | 1317 current_bci = st.bci(); |
1318 do { | |
1319 should_repeat = false; | |
1320 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
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1321 current_bci = Method::fast_exception_handler_bci_for( |
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1322 current_mh, eh_klass, current_bci, THREAD); |
0 | 1323 if (HAS_PENDING_EXCEPTION) { |
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1324 exception_handle = Handle(thread, PENDING_EXCEPTION); |
0 | 1325 CLEAR_PENDING_EXCEPTION; |
1326 should_repeat = true; | |
1327 } | |
1328 } while (should_repeat && (current_bci != -1)); | |
1329 st.next(); | |
1330 } while ((current_bci < 0) && (!st.at_end())); | |
1331 | |
1332 jmethodID catch_jmethodID; | |
1333 if (current_bci < 0) { | |
1334 catch_jmethodID = 0; | |
1335 current_bci = 0; | |
1336 } else { | |
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1337 catch_jmethodID = jem.to_jmethodID(current_mh); |
0 | 1338 } |
1339 | |
1340 JvmtiJavaThreadEventTransition jet(thread); | |
1341 jvmtiEventException callback = env->callbacks()->Exception; | |
1342 if (callback != NULL) { | |
1343 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1344 jem.jni_methodID(), jem.location(), | |
1345 jem.exception(), | |
1346 catch_jmethodID, current_bci); | |
1347 } | |
1348 } | |
1349 } | |
1350 } | |
1351 | |
1352 // frames may get popped because of this throw, be safe - invalidate cached depth | |
1353 state->invalidate_cur_stack_depth(); | |
1354 } | |
1355 | |
1356 | |
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1357 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, Method* method, address location, oop exception, bool in_handler_frame) { |
0 | 1358 HandleMark hm(thread); |
1359 methodHandle mh(thread, method); | |
1360 Handle exception_handle(thread, exception); | |
1361 | |
1362 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1363 if (state == NULL) { | |
1364 return; | |
1365 } | |
1366 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1367 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
1368 JvmtiTrace::safe_get_thread_name(thread), | |
1369 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1370 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1371 location==0? "no location:" : "", | |
1372 location==0? 0 : location - mh()->code_base(), | |
1373 in_handler_frame? "in handler frame" : "not handler frame" )); | |
1374 | |
1375 if (state->is_exception_detected()) { | |
1376 | |
1377 state->invalidate_cur_stack_depth(); | |
1378 if (!in_handler_frame) { | |
1379 // Not in exception handler. | |
1380 if(state->is_interp_only_mode()) { | |
1381 // method exit and frame pop events are posted only in interp mode. | |
1382 // When these events are enabled code should be in running in interp mode. | |
1383 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
1384 // The cached cur_stack_depth might have changed from the | |
1385 // operations of frame pop or method exit. We are not 100% sure | |
1386 // the cached cur_stack_depth is still valid depth so invalidate | |
1387 // it. | |
1388 state->invalidate_cur_stack_depth(); | |
1389 } | |
1390 } else { | |
1391 // In exception handler frame. Report exception catch. | |
1392 assert(location != NULL, "must be a known location"); | |
1393 // Update cur_stack_depth - the frames above the current frame | |
1394 // have been unwound due to this exception: | |
1395 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
1396 state->set_exception_caught(); | |
1397 | |
1398 JvmtiEnvThreadStateIterator it(state); | |
1399 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1400 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
1401 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1402 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
1403 JvmtiTrace::safe_get_thread_name(thread), | |
1404 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1405 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1406 location - mh()->code_base() )); | |
1407 | |
1408 JvmtiEnv *env = ets->get_env(); | |
1409 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1410 JvmtiJavaThreadEventTransition jet(thread); | |
1411 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
1412 if (callback != NULL) { | |
1413 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1414 jem.jni_methodID(), jem.location(), | |
1415 jem.exception()); | |
1416 } | |
1417 } | |
1418 } | |
1419 } | |
1420 } | |
1421 } | |
1422 | |
1423 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1424 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1425 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1426 // At least one field access watch is set so we have more work | |
1427 // to do. This wrapper is used by entry points that allow us | |
1428 // to create handles in post_field_access_by_jni(). | |
1429 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1430 // event posting can block so refetch oop if we were passed a jobj | |
1431 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1432 } | |
1433 return obj; | |
1434 } | |
1435 | |
1436 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1437 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1438 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1439 // At least one field access watch is set so we have more work | |
1440 // to do. This wrapper is used by "quick" entry points that don't | |
1441 // allow us to create handles in post_field_access_by_jni(). We | |
1442 // override that with a ResetNoHandleMark. | |
1443 ResetNoHandleMark rnhm; | |
1444 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1445 // event posting can block so refetch oop if we were passed a jobj | |
1446 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1447 } | |
1448 return obj; | |
1449 } | |
1450 | |
1451 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
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1452 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1453 // We must be called with a Java context in order to provide reasonable |
1454 // values for the klazz, method, and location fields. The callers of this | |
1455 // function don't make the call unless there is a Java context. | |
1456 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
1457 | |
1458 ResourceMark rm; | |
1459 fieldDescriptor fd; | |
1460 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1461 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1462 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
1463 if (!valid_fieldID) return; | |
1464 // field accesses are not watched so bail | |
1465 if (!fd.is_field_access_watched()) return; | |
1466 | |
1467 HandleMark hm(thread); | |
1468 KlassHandle h_klass(thread, klass); | |
1469 Handle h_obj; | |
1470 if (!is_static) { | |
1471 // non-static field accessors have an object, but we need a handle | |
1472 assert(obj != NULL, "non-static needs an object"); | |
1473 h_obj = Handle(thread, obj); | |
1474 } | |
1475 post_field_access(thread, | |
1476 thread->last_frame().interpreter_frame_method(), | |
1477 thread->last_frame().interpreter_frame_bcp(), | |
1478 h_klass, h_obj, fieldID); | |
1479 } | |
1480 | |
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1481 void JvmtiExport::post_field_access(JavaThread *thread, Method* method, |
0 | 1482 address location, KlassHandle field_klass, Handle object, jfieldID field) { |
1483 | |
1484 HandleMark hm(thread); | |
1485 methodHandle mh(thread, method); | |
1486 | |
1487 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1488 if (state == NULL) { | |
1489 return; | |
1490 } | |
1491 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
1492 JvmtiTrace::safe_get_thread_name(thread))); | |
1493 JvmtiEnvThreadStateIterator it(state); | |
1494 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1495 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
1496 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
1497 JvmtiTrace::safe_get_thread_name(thread), | |
1498 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1499 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1500 location - mh()->code_base() )); | |
1501 | |
1502 JvmtiEnv *env = ets->get_env(); | |
1503 JvmtiLocationEventMark jem(thread, mh, location); | |
1504 jclass field_jclass = jem.to_jclass(field_klass()); | |
1505 jobject field_jobject = jem.to_jobject(object()); | |
1506 JvmtiJavaThreadEventTransition jet(thread); | |
1507 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
1508 if (callback != NULL) { | |
1509 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1510 jem.jni_methodID(), jem.location(), | |
1511 field_jclass, field_jobject, field); | |
1512 } | |
1513 } | |
1514 } | |
1515 } | |
1516 | |
1517 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1518 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1519 char sig_type, jvalue *value) { |
1520 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1521 // At least one field modification watch is set so we have more work | |
1522 // to do. This wrapper is used by entry points that allow us | |
1523 // to create handles in post_field_modification_by_jni(). | |
1524 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1525 // event posting can block so refetch oop if we were passed a jobj | |
1526 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1527 } | |
1528 return obj; | |
1529 } | |
1530 | |
1531 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1532 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1533 char sig_type, jvalue *value) { |
1534 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1535 // At least one field modification watch is set so we have more work | |
1536 // to do. This wrapper is used by "quick" entry points that don't | |
1537 // allow us to create handles in post_field_modification_by_jni(). We | |
1538 // override that with a ResetNoHandleMark. | |
1539 ResetNoHandleMark rnhm; | |
1540 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1541 // event posting can block so refetch oop if we were passed a jobj | |
1542 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1543 } | |
1544 return obj; | |
1545 } | |
1546 | |
1547 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
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1548 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1549 char sig_type, jvalue *value) { |
1550 // We must be called with a Java context in order to provide reasonable | |
1551 // values for the klazz, method, and location fields. The callers of this | |
1552 // function don't make the call unless there is a Java context. | |
1553 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
1554 | |
1555 ResourceMark rm; | |
1556 fieldDescriptor fd; | |
1557 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1558 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1559 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
1560 if (!valid_fieldID) return; | |
1561 // field modifications are not watched so bail | |
1562 if (!fd.is_field_modification_watched()) return; | |
1563 | |
1564 HandleMark hm(thread); | |
1565 | |
1566 Handle h_obj; | |
1567 if (!is_static) { | |
1568 // non-static field accessors have an object, but we need a handle | |
1569 assert(obj != NULL, "non-static needs an object"); | |
1570 h_obj = Handle(thread, obj); | |
1571 } | |
1572 KlassHandle h_klass(thread, klass); | |
1573 post_field_modification(thread, | |
1574 thread->last_frame().interpreter_frame_method(), | |
1575 thread->last_frame().interpreter_frame_bcp(), | |
1576 h_klass, h_obj, fieldID, sig_type, value); | |
1577 } | |
1578 | |
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1579 void JvmtiExport::post_raw_field_modification(JavaThread *thread, Method* method, |
0 | 1580 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1581 char sig_type, jvalue *value) { | |
1582 | |
1583 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'C' || sig_type == 'S') { | |
1584 // 'I' instructions are used for byte, char, short and int. | |
1585 // determine which it really is, and convert | |
1586 fieldDescriptor fd; | |
1587 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
1588 // should be found (if not, leave as is) | |
1589 if (found) { | |
1590 jint ival = value->i; | |
1591 // convert value from int to appropriate type | |
1592 switch (fd.field_type()) { | |
1593 case T_BOOLEAN: | |
1594 sig_type = 'Z'; | |
1595 value->i = 0; // clear it | |
1596 value->z = (jboolean)ival; | |
1597 break; | |
1598 case T_BYTE: | |
1599 sig_type = 'B'; | |
1600 value->i = 0; // clear it | |
1601 value->b = (jbyte)ival; | |
1602 break; | |
1603 case T_CHAR: | |
1604 sig_type = 'C'; | |
1605 value->i = 0; // clear it | |
1606 value->c = (jchar)ival; | |
1607 break; | |
1608 case T_SHORT: | |
1609 sig_type = 'S'; | |
1610 value->i = 0; // clear it | |
1611 value->s = (jshort)ival; | |
1612 break; | |
1613 case T_INT: | |
1614 // nothing to do | |
1615 break; | |
1616 default: | |
1617 // this is an integer instruction, should be one of above | |
1618 ShouldNotReachHere(); | |
1619 break; | |
1620 } | |
1621 } | |
1622 } | |
1623 | |
1624 // convert oop to JNI handle. | |
1625 if (sig_type == 'L' || sig_type == '[') { | |
1626 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); | |
1627 } | |
1628 | |
1629 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
1630 | |
1631 // Destroy the JNI handle allocated above. | |
1632 if (sig_type == 'L') { | |
1633 JNIHandles::destroy_local(value->l); | |
1634 } | |
1635 } | |
1636 | |
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1637 void JvmtiExport::post_field_modification(JavaThread *thread, Method* method, |
0 | 1638 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1639 char sig_type, jvalue *value_ptr) { | |
1640 | |
1641 HandleMark hm(thread); | |
1642 methodHandle mh(thread, method); | |
1643 | |
1644 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1645 if (state == NULL) { | |
1646 return; | |
1647 } | |
1648 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1649 ("JVMTI [%s] Trg Field Modification event triggered", | |
1650 JvmtiTrace::safe_get_thread_name(thread))); | |
1651 | |
1652 JvmtiEnvThreadStateIterator it(state); | |
1653 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1654 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
1655 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1656 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
1657 JvmtiTrace::safe_get_thread_name(thread), | |
1658 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1659 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1660 location - mh()->code_base() )); | |
1661 | |
1662 JvmtiEnv *env = ets->get_env(); | |
1663 JvmtiLocationEventMark jem(thread, mh, location); | |
1664 jclass field_jclass = jem.to_jclass(field_klass()); | |
1665 jobject field_jobject = jem.to_jobject(object()); | |
1666 JvmtiJavaThreadEventTransition jet(thread); | |
1667 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
1668 if (callback != NULL) { | |
1669 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1670 jem.jni_methodID(), jem.location(), | |
1671 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
1672 } | |
1673 } | |
1674 } | |
1675 } | |
1676 | |
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1677 void JvmtiExport::post_native_method_bind(Method* method, address* function_ptr) { |
0 | 1678 JavaThread* thread = JavaThread::current(); |
1679 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1680 | |
1681 HandleMark hm(thread); | |
1682 methodHandle mh(thread, method); | |
1683 | |
1684 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
1685 JvmtiTrace::safe_get_thread_name(thread))); | |
1686 | |
1687 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1688 JvmtiEnvIterator it; | |
1689 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1690 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1691 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
1692 JvmtiTrace::safe_get_thread_name(thread) )); | |
1693 | |
1694 JvmtiMethodEventMark jem(thread, mh); | |
1695 JvmtiJavaThreadEventTransition jet(thread); | |
1696 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
1697 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
1698 if (callback != NULL) { | |
1699 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
1700 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
1701 } | |
1702 } | |
1703 } | |
1704 } | |
1705 } | |
1706 | |
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1707 // Returns a record containing inlining information for the given nmethod |
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1708 jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
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1709 jint numstackframes = 0; |
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1710 jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
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1711 record->header.kind = JVMTI_CMLR_INLINE_INFO; |
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1712 record->header.next = NULL; |
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1713 record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
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1714 record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
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1715 record->numpcs = 0; |
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1716 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1717 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1718 record->numpcs++; |
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1719 } |
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1720 record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
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1721 int scope = 0; |
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1722 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1723 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1724 void* pc_address = (void*)p->real_pc(nm); |
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1725 assert(pc_address != NULL, "pc_address must be non-null"); |
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1726 record->pcinfo[scope].pc = pc_address; |
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1727 numstackframes=0; |
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1728 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1729 numstackframes++; |
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1730 } |
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1731 assert(numstackframes != 0, "numstackframes must be nonzero."); |
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1732 record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
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1733 record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
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1734 record->pcinfo[scope].numstackframes = numstackframes; |
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1735 int stackframe = 0; |
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1736 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1737 // sd->method() can be NULL for stubs but not for nmethods. To be completely robust, include an assert that we should never see a null sd->method() |
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1738 assert(sd->method() != NULL, "sd->method() cannot be null."); |
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1739 record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
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1740 record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
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1741 stackframe++; |
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1742 } |
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1743 scope++; |
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1744 } |
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1745 return record; |
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1746 } |
0 | 1747 |
1748 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
1749 JavaThread* thread = JavaThread::current(); | |
1750 | |
1751 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1752 ("JVMTI [%s] method compile load event triggered", | |
1753 JvmtiTrace::safe_get_thread_name(thread))); | |
1754 | |
1755 JvmtiEnvIterator it; | |
1756 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1757 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1758 | |
1759 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1760 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
1761 JvmtiTrace::safe_get_thread_name(thread), | |
1762 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
1763 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
1764 ResourceMark rm(thread); | |
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1765 HandleMark hm(thread); |
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1766 |
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1767 // Add inlining information |
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1768 jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
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1769 // Pass inlining information through the void pointer |
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1770 JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
0 | 1771 JvmtiJavaThreadEventTransition jet(thread); |
1772 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1773 if (callback != NULL) { | |
1774 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
1775 jem.code_size(), jem.code_data(), jem.map_length(), | |
1776 jem.map(), jem.compile_info()); | |
1777 } | |
1778 } | |
1779 } | |
1780 } | |
1781 | |
1782 | |
1783 // post a COMPILED_METHOD_LOAD event for a given environment | |
1784 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
1785 const void *code_begin, const jint map_length, | |
1786 const jvmtiAddrLocationMap* map) | |
1787 { | |
1788 JavaThread* thread = JavaThread::current(); | |
1789 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1790 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
1791 JvmtiTrace::safe_get_thread_name(thread))); | |
1792 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1793 | |
1794 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1795 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
1796 JvmtiTrace::safe_get_thread_name(thread), method)); | |
1797 | |
1798 JvmtiEventMark jem(thread); | |
1799 JvmtiJavaThreadEventTransition jet(thread); | |
1800 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1801 if (callback != NULL) { | |
1802 (*callback)(env->jvmti_external(), method, | |
1803 length, code_begin, map_length, | |
1804 map, NULL); | |
1805 } | |
1806 } | |
1807 } | |
1808 | |
1809 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
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1810 assert(name != NULL && name[0] != '\0', "sanity check"); |
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1811 |
0 | 1812 JavaThread* thread = JavaThread::current(); |
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1813 // In theory everyone coming thru here is in_vm but we need to be certain |
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1814 // because a callee will do a vm->native transition |
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1815 ThreadInVMfromUnknown __tiv; |
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1816 |
0 | 1817 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
1818 ("JVMTI [%s] method dynamic code generated event triggered", | |
1819 JvmtiTrace::safe_get_thread_name(thread))); | |
1820 JvmtiEnvIterator it; | |
1821 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1822 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1823 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1824 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1825 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1826 JvmtiEventMark jem(thread); | |
1827 JvmtiJavaThreadEventTransition jet(thread); | |
1828 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1829 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1830 if (callback != NULL) { | |
1831 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1832 } | |
1833 } | |
1834 } | |
1835 } | |
1836 | |
1837 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
1838 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
1839 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
1840 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
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1841 } else { |
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1842 // It may not be safe to post the event from this thread. Defer all |
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1843 // postings to the service thread so that it can perform them in a safe |
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1844 // context and in-order. |
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1845 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1846 JvmtiDeferredEvent event = JvmtiDeferredEvent::dynamic_code_generated_event( |
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1847 name, code_begin, code_end); |
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1848 JvmtiDeferredEventQueue::enqueue(event); |
0 | 1849 } |
1850 } | |
1851 | |
1852 | |
1853 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
1854 // used by GenerateEvents | |
1855 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
1856 const void *code_begin, const void *code_end) | |
1857 { | |
1858 JavaThread* thread = JavaThread::current(); | |
1859 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1860 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
1861 JvmtiTrace::safe_get_thread_name(thread))); | |
1862 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1863 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1864 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1865 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1866 JvmtiEventMark jem(thread); | |
1867 JvmtiJavaThreadEventTransition jet(thread); | |
1868 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1869 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1870 if (callback != NULL) { | |
1871 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1872 } | |
1873 } | |
1874 } | |
1875 | |
1876 // post a DynamicCodeGenerated event while holding locks in the VM. | |
1877 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
1878 address code_begin, address code_end) | |
1879 { | |
1880 // register the stub with the current dynamic code event collector | |
1881 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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1882 // state can only be NULL if the current thread is exiting which |
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1883 // should not happen since we're trying to post an event |
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1884 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
0 | 1885 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
1886 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
1887 collector->register_stub(name, code_begin, code_end); | |
1888 } | |
1889 | |
1890 // Collect all the vm internally allocated objects which are visible to java world | |
1891 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
1892 Thread* thread = ThreadLocalStorage::thread(); | |
1893 if (thread != NULL && thread->is_Java_thread()) { | |
1894 // Can not take safepoint here. | |
1895 No_Safepoint_Verifier no_sfpt; | |
1896 // Can not take safepoint here so can not use state_for to get | |
1897 // jvmti thread state. | |
1898 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
1899 if (state != NULL ) { | |
1900 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
1901 JvmtiVMObjectAllocEventCollector *collector; | |
1902 collector = state->get_vm_object_alloc_event_collector(); | |
1903 if (collector != NULL && collector->is_enabled()) { | |
1904 // Don't record classes as these will be notified via the ClassLoad | |
1905 // event. | |
1142 | 1906 if (obj->klass() != SystemDictionary::Class_klass()) { |
0 | 1907 collector->record_allocation(obj); |
1908 } | |
1909 } | |
1910 } | |
1911 } | |
1912 } | |
1913 | |
1914 void JvmtiExport::post_garbage_collection_finish() { | |
1915 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
1916 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1917 ("JVMTI [%s] garbage collection finish event triggered", | |
1918 JvmtiTrace::safe_get_thread_name(thread))); | |
1919 JvmtiEnvIterator it; | |
1920 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1921 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { | |
1922 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1923 ("JVMTI [%s] garbage collection finish event sent ", | |
1924 JvmtiTrace::safe_get_thread_name(thread))); | |
1925 JvmtiThreadEventTransition jet(thread); | |
1926 // JNIEnv is NULL here because this event is posted from VM Thread | |
1927 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
1928 if (callback != NULL) { | |
1929 (*callback)(env->jvmti_external()); | |
1930 } | |
1931 } | |
1932 } | |
1933 } | |
1934 | |
1935 void JvmtiExport::post_garbage_collection_start() { | |
1936 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
1937 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1938 ("JVMTI [%s] garbage collection start event triggered", | |
1939 JvmtiTrace::safe_get_thread_name(thread))); | |
1940 JvmtiEnvIterator it; | |
1941 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1942 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
1943 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1944 ("JVMTI [%s] garbage collection start event sent ", | |
1945 JvmtiTrace::safe_get_thread_name(thread))); | |
1946 JvmtiThreadEventTransition jet(thread); | |
1947 // JNIEnv is NULL here because this event is posted from VM Thread | |
1948 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
1949 if (callback != NULL) { | |
1950 (*callback)(env->jvmti_external()); | |
1951 } | |
1952 } | |
1953 } | |
1954 } | |
1955 | |
1956 void JvmtiExport::post_data_dump() { | |
1957 Thread *thread = Thread::current(); | |
1958 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1959 ("JVMTI [%s] data dump request event triggered", | |
1960 JvmtiTrace::safe_get_thread_name(thread))); | |
1961 JvmtiEnvIterator it; | |
1962 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1963 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
1964 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1965 ("JVMTI [%s] data dump request event sent ", | |
1966 JvmtiTrace::safe_get_thread_name(thread))); | |
1967 JvmtiThreadEventTransition jet(thread); | |
1968 // JNIEnv is NULL here because this event is posted from VM Thread | |
1969 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
1970 if (callback != NULL) { | |
1971 (*callback)(env->jvmti_external()); | |
1972 } | |
1973 } | |
1974 } | |
1975 } | |
1976 | |
1977 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
1978 oop object = (oop)obj_mntr->object(); | |
1979 if (!ServiceUtil::visible_oop(object)) { | |
1980 // Ignore monitor contended enter for vm internal object. | |
1981 return; | |
1982 } | |
1983 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1984 if (state == NULL) { | |
1985 return; | |
1986 } | |
1987 | |
1988 HandleMark hm(thread); | |
1989 Handle h(thread, object); | |
1990 | |
1991 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
1992 ("JVMTI [%s] montior contended enter event triggered", | |
1993 JvmtiTrace::safe_get_thread_name(thread))); | |
1994 | |
1995 JvmtiEnvThreadStateIterator it(state); | |
1996 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1997 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
1998 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
1999 ("JVMTI [%s] monitor contended enter event sent", | |
2000 JvmtiTrace::safe_get_thread_name(thread))); | |
2001 JvmtiMonitorEventMark jem(thread, h()); | |
2002 JvmtiEnv *env = ets->get_env(); | |
2003 JvmtiThreadEventTransition jet(thread); | |
2004 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
2005 if (callback != NULL) { | |
2006 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2007 } | |
2008 } | |
2009 } | |
2010 } | |
2011 | |
2012 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
2013 oop object = (oop)obj_mntr->object(); | |
2014 if (!ServiceUtil::visible_oop(object)) { | |
2015 // Ignore monitor contended entered for vm internal object. | |
2016 return; | |
2017 } | |
2018 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2019 if (state == NULL) { | |
2020 return; | |
2021 } | |
2022 | |
2023 HandleMark hm(thread); | |
2024 Handle h(thread, object); | |
2025 | |
2026 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2027 ("JVMTI [%s] montior contended entered event triggered", | |
2028 JvmtiTrace::safe_get_thread_name(thread))); | |
2029 | |
2030 JvmtiEnvThreadStateIterator it(state); | |
2031 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2032 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
2033 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2034 ("JVMTI [%s] monitor contended enter event sent", | |
2035 JvmtiTrace::safe_get_thread_name(thread))); | |
2036 JvmtiMonitorEventMark jem(thread, h()); | |
2037 JvmtiEnv *env = ets->get_env(); | |
2038 JvmtiThreadEventTransition jet(thread); | |
2039 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
2040 if (callback != NULL) { | |
2041 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2042 } | |
2043 } | |
2044 } | |
2045 } | |
2046 | |
2047 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
2048 jlong timeout) { | |
2049 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2050 if (state == NULL) { | |
2051 return; | |
2052 } | |
2053 | |
2054 HandleMark hm(thread); | |
2055 Handle h(thread, object); | |
2056 | |
2057 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2058 ("JVMTI [%s] montior wait event triggered", | |
2059 JvmtiTrace::safe_get_thread_name(thread))); | |
2060 | |
2061 JvmtiEnvThreadStateIterator it(state); | |
2062 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2063 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
2064 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2065 ("JVMTI [%s] monitor wait event sent ", | |
2066 JvmtiTrace::safe_get_thread_name(thread))); | |
2067 JvmtiMonitorEventMark jem(thread, h()); | |
2068 JvmtiEnv *env = ets->get_env(); | |
2069 JvmtiThreadEventTransition jet(thread); | |
2070 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
2071 if (callback != NULL) { | |
2072 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2073 jem.jni_object(), timeout); | |
2074 } | |
2075 } | |
2076 } | |
2077 } | |
2078 | |
2079 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
2080 oop object = (oop)obj_mntr->object(); | |
2081 if (!ServiceUtil::visible_oop(object)) { | |
2082 // Ignore monitor waited for vm internal object. | |
2083 return; | |
2084 } | |
2085 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2086 if (state == NULL) { | |
2087 return; | |
2088 } | |
2089 | |
2090 HandleMark hm(thread); | |
2091 Handle h(thread, object); | |
2092 | |
2093 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2094 ("JVMTI [%s] montior waited event triggered", | |
2095 JvmtiTrace::safe_get_thread_name(thread))); | |
2096 | |
2097 JvmtiEnvThreadStateIterator it(state); | |
2098 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2099 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
2100 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2101 ("JVMTI [%s] monitor waited event sent ", | |
2102 JvmtiTrace::safe_get_thread_name(thread))); | |
2103 JvmtiMonitorEventMark jem(thread, h()); | |
2104 JvmtiEnv *env = ets->get_env(); | |
2105 JvmtiThreadEventTransition jet(thread); | |
2106 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
2107 if (callback != NULL) { | |
2108 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2109 jem.jni_object(), timed_out); | |
2110 } | |
2111 } | |
2112 } | |
2113 } | |
2114 | |
2115 | |
2116 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
2117 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
2118 JvmtiTrace::safe_get_thread_name(thread))); | |
2119 if (object == NULL) { | |
2120 return; | |
2121 } | |
2122 HandleMark hm(thread); | |
2123 Handle h(thread, object); | |
2124 JvmtiEnvIterator it; | |
2125 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2126 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
2127 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
2128 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 2129 object==NULL? "NULL" : java_lang_Class::as_Klass(object)->external_name())); |
0 | 2130 |
2131 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
2132 JvmtiJavaThreadEventTransition jet(thread); | |
2133 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
2134 if (callback != NULL) { | |
2135 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2136 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
2137 } | |
2138 } | |
2139 } | |
2140 } | |
2141 | |
2142 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2143 | |
2144 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
2145 assert(JavaThread::current() == thread, "thread is not current"); | |
2126
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2146 MutexLocker mu(JvmtiThreadState_lock); |
0 | 2147 |
2126
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2148 if (thread->jvmti_thread_state() != NULL) { |
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2149 // This has to happen after the thread state is removed, which is |
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2150 // why it is not in post_thread_end_event like its complement |
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2151 // Maybe both these functions should be rolled into the posts? |
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2152 JvmtiEventController::thread_ended(thread); |
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2153 } |
0 | 2154 } |
2155 | |
2156 void JvmtiExport::oops_do(OopClosure* f) { | |
2157 JvmtiCurrentBreakpoints::oops_do(f); | |
2158 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
2159 } | |
2160 | |
2147
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2161 void JvmtiExport::weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f) { |
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2162 JvmtiTagMap::weak_oops_do(is_alive, f); |
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2163 } |
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2164 |
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2165 void JvmtiExport::gc_epilogue() { |
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2166 JvmtiCurrentBreakpoints::gc_epilogue(); |
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2167 } |
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2168 |
0 | 2169 // Onload raw monitor transition. |
2170 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
2171 JvmtiPendingMonitors::transition_raw_monitors(); | |
2172 } | |
2173 | |
2174 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2175 | |
2176 // type for the Agent_OnAttach entry point | |
2177 extern "C" { | |
2178 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
2179 } | |
2180 | |
2181 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
2182 char ebuf[1024]; | |
2183 char buffer[JVM_MAXPATHLEN]; | |
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2184 void* library = NULL; |
0 | 2185 jint result = JNI_ERR; |
2186 | |
2187 // get agent name and options | |
2188 const char* agent = op->arg(0); | |
2189 const char* absParam = op->arg(1); | |
2190 const char* options = op->arg(2); | |
2191 | |
2192 // The abs paramter should be "true" or "false" | |
2193 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
2194 | |
2195 | |
2196 // If the path is absolute we attempt to load the library. Otherwise we try to | |
2197 // load it from the standard dll directory. | |
2198 | |
2199 if (is_absolute_path) { | |
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2200 library = os::dll_load(agent, ebuf, sizeof ebuf); |
0 | 2201 } else { |
2202 // Try to load the agent from the standard dll directory | |
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2203 if (os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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2204 agent)) { |
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2205 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2206 } |
0 | 2207 if (library == NULL) { |
2208 // not found - try local path | |
2209 char ns[1] = {0}; | |
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2210 if (os::dll_build_name(buffer, sizeof(buffer), ns, agent)) { |
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2211 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2212 } |
0 | 2213 } |
2214 } | |
2215 | |
2216 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
2217 // function | |
2218 if (library != NULL) { | |
2219 | |
2220 // Lookup the Agent_OnAttach function | |
2221 OnAttachEntry_t on_attach_entry = NULL; | |
2222 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; | |
2223 for (uint symbol_index = 0; symbol_index < ARRAY_SIZE(on_attach_symbols); symbol_index++) { | |
2224 on_attach_entry = | |
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|
2225 CAST_TO_FN_PTR(OnAttachEntry_t, os::dll_lookup(library, on_attach_symbols[symbol_index])); |
0 | 2226 if (on_attach_entry != NULL) break; |
2227 } | |
2228 | |
2229 if (on_attach_entry == NULL) { | |
2230 // Agent_OnAttach missing - unload library | |
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2231 os::dll_unload(library); |
0 | 2232 } else { |
2233 // Invoke the Agent_OnAttach function | |
2234 JavaThread* THREAD = JavaThread::current(); | |
2235 { | |
2236 extern struct JavaVM_ main_vm; | |
2237 JvmtiThreadEventMark jem(THREAD); | |
2238 JvmtiJavaThreadEventTransition jet(THREAD); | |
2239 | |
2240 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
2241 } | |
2242 | |
2243 // Agent_OnAttach may have used JNI | |
2244 if (HAS_PENDING_EXCEPTION) { | |
2245 CLEAR_PENDING_EXCEPTION; | |
2246 } | |
2247 | |
2248 // If OnAttach returns JNI_OK then we add it to the list of | |
2249 // agent libraries so that we can call Agent_OnUnload later. | |
2250 if (result == JNI_OK) { | |
2251 Arguments::add_loaded_agent(agent, (char*)options, is_absolute_path, library); | |
2252 } | |
2253 | |
2254 // Agent_OnAttach executed so completion status is JNI_OK | |
2255 st->print_cr("%d", result); | |
2256 result = JNI_OK; | |
2257 } | |
2258 } | |
2259 return result; | |
2260 } | |
2261 | |
2262 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2263 | |
2264 // Setup current current thread for event collection. | |
2265 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
2266 // set this event collector to be the current one. | |
2267 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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2268 // state can only be NULL if the current thread is exiting which |
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2269 // should not happen since we're trying to configure for event collection |
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2270 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
0 | 2271 if (is_vm_object_alloc_event()) { |
2272 _prev = state->get_vm_object_alloc_event_collector(); | |
2273 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
2274 } else if (is_dynamic_code_event()) { | |
2275 _prev = state->get_dynamic_code_event_collector(); | |
2276 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
2277 } | |
2278 } | |
2279 | |
2280 // Unset current event collection in this thread and reset it with previous | |
2281 // collector. | |
2282 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
2283 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
2284 if (state != NULL) { | |
2285 // restore the previous event collector (if any) | |
2286 if (is_vm_object_alloc_event()) { | |
2287 if (state->get_vm_object_alloc_event_collector() == this) { | |
2288 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
2289 } else { | |
2290 // this thread's jvmti state was created during the scope of | |
2291 // the event collector. | |
2292 } | |
2293 } else { | |
2294 if (is_dynamic_code_event()) { | |
2295 if (state->get_dynamic_code_event_collector() == this) { | |
2296 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
2297 } else { | |
2298 // this thread's jvmti state was created during the scope of | |
2299 // the event collector. | |
2300 } | |
2301 } | |
2302 } | |
2303 } | |
2304 } | |
2305 | |
2306 // create the dynamic code event collector | |
2307 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
2308 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
2309 setup_jvmti_thread_state(); | |
2310 } | |
2311 } | |
2312 | |
2313 // iterate over any code blob descriptors collected and post a | |
2314 // DYNAMIC_CODE_GENERATED event to the profiler. | |
2315 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
2316 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
2317 // iterate over any code blob descriptors that we collected | |
2318 if (_code_blobs != NULL) { | |
2319 for (int i=0; i<_code_blobs->length(); i++) { | |
2320 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
2321 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
2322 FreeHeap(blob); | |
2323 } | |
2324 delete _code_blobs; | |
2325 } | |
2326 unset_jvmti_thread_state(); | |
2327 } | |
2328 | |
2329 // register a stub | |
2330 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
2331 if (_code_blobs == NULL) { | |
6197 | 2332 _code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(1,true); |
0 | 2333 } |
2334 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
2335 } | |
2336 | |
2337 // Setup current thread to record vm allocated objects. | |
2338 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
2339 if (JvmtiExport::should_post_vm_object_alloc()) { | |
2340 _enable = true; | |
2341 setup_jvmti_thread_state(); | |
2342 } else { | |
2343 _enable = false; | |
2344 } | |
2345 } | |
2346 | |
2347 // Post vm_object_alloc event for vm allocated objects visible to java | |
2348 // world. | |
2349 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
2350 if (_allocated != NULL) { | |
2351 set_enabled(false); | |
2352 for (int i = 0; i < _allocated->length(); i++) { | |
2353 oop obj = _allocated->at(i); | |
2354 if (ServiceUtil::visible_oop(obj)) { | |
2355 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
2356 } | |
2357 } | |
2358 delete _allocated; | |
2359 } | |
2360 unset_jvmti_thread_state(); | |
2361 } | |
2362 | |
2363 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
2364 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
2365 if (_allocated == NULL) { | |
6197 | 2366 _allocated = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<oop>(1, true); |
0 | 2367 } |
2368 _allocated->push(obj); | |
2369 } | |
2370 | |
2371 // GC support. | |
2372 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
2373 if (_allocated != NULL) { | |
2374 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
2375 if (_allocated->at(i) != NULL) { | |
2376 f->do_oop(_allocated->adr_at(i)); | |
2377 } | |
2378 } | |
2379 } | |
2380 } | |
2381 | |
2382 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
2383 // no-op if jvmti not enabled | |
2384 if (!JvmtiEnv::environments_might_exist()) { | |
2385 return; | |
2386 } | |
2387 | |
2388 // Runs at safepoint. So no need to acquire Threads_lock. | |
2389 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
2390 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
2391 if (state != NULL) { | |
2392 JvmtiVMObjectAllocEventCollector *collector; | |
2393 collector = state->get_vm_object_alloc_event_collector(); | |
2394 while (collector != NULL) { | |
2395 collector->oops_do(f); | |
2396 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
2397 } | |
2398 } | |
2399 } | |
2400 } | |
2401 | |
2402 | |
2403 // Disable collection of VMObjectAlloc events | |
2404 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
2405 // a no-op if VMObjectAlloc event is not enabled | |
2406 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
2407 return; | |
2408 } | |
2409 Thread* thread = ThreadLocalStorage::thread(); | |
2410 if (thread != NULL && thread->is_Java_thread()) { | |
2411 JavaThread* current_thread = (JavaThread*)thread; | |
2412 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
2413 if (state != NULL) { | |
2414 JvmtiVMObjectAllocEventCollector *collector; | |
2415 collector = state->get_vm_object_alloc_event_collector(); | |
2416 if (collector != NULL && collector->is_enabled()) { | |
2417 _collector = collector; | |
2418 _collector->set_enabled(false); | |
2419 } | |
2420 } | |
2421 } | |
2422 } | |
2423 | |
2424 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
2425 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
2426 if (was_enabled()) { | |
2427 _collector->set_enabled(true); | |
2428 } | |
2429 }; | |
2430 | |
2125
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
1988
diff
changeset
|
2431 JvmtiGCMarker::JvmtiGCMarker() { |
0 | 2432 // if there aren't any JVMTI environments then nothing to do |
2433 if (!JvmtiEnv::environments_might_exist()) { | |
2434 return; | |
2435 } | |
2436 | |
2437 if (JvmtiExport::should_post_garbage_collection_start()) { | |
2438 JvmtiExport::post_garbage_collection_start(); | |
2439 } | |
2440 | |
2125
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
1988
diff
changeset
|
2441 if (SafepointSynchronize::is_at_safepoint()) { |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
1988
diff
changeset
|
2442 // Do clean up tasks that need to be done at a safepoint |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
1988
diff
changeset
|
2443 JvmtiEnvBase::check_for_periodic_clean_up(); |
0 | 2444 } |
2445 } | |
2446 | |
2447 JvmtiGCMarker::~JvmtiGCMarker() { | |
2448 // if there aren't any JVMTI environments then nothing to do | |
2449 if (!JvmtiEnv::environments_might_exist()) { | |
2450 return; | |
2451 } | |
2452 | |
2453 // JVMTI notify gc finish | |
2454 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
2455 JvmtiExport::post_garbage_collection_finish(); | |
2456 } | |
2457 } |