Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvmtiExport.cpp @ 2044:06f017f7daa7
Merge.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Fri, 07 Jan 2011 18:18:08 +0100 |
parents | 684faacebf20 |
children | 7246a374a9f2 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2010, 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 |
c18cbe5936b8
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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" | |
53 #ifndef SERIALGC | |
54 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" | |
55 #endif | |
0 | 56 |
57 #ifdef JVMTI_TRACE | |
58 #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
59 #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
60 #else | |
61 #define EVT_TRIG_TRACE(evt,out) | |
62 #define EVT_TRACE(evt,out) | |
63 #endif | |
64 | |
65 /////////////////////////////////////////////////////////////// | |
66 // | |
67 // JvmtiEventTransition | |
68 // | |
69 // TO DO -- | |
70 // more handle purging | |
71 | |
72 // Use this for JavaThreads and state is _thread_in_vm. | |
73 class JvmtiJavaThreadEventTransition : StackObj { | |
74 private: | |
75 ResourceMark _rm; | |
76 ThreadToNativeFromVM _transition; | |
77 HandleMark _hm; | |
78 | |
79 public: | |
80 JvmtiJavaThreadEventTransition(JavaThread *thread) : | |
81 _rm(), | |
82 _transition(thread), | |
83 _hm(thread) {}; | |
84 }; | |
85 | |
86 // For JavaThreads which are not in _thread_in_vm state | |
87 // and other system threads use this. | |
88 class JvmtiThreadEventTransition : StackObj { | |
89 private: | |
90 ResourceMark _rm; | |
91 HandleMark _hm; | |
92 JavaThreadState _saved_state; | |
93 JavaThread *_jthread; | |
94 | |
95 public: | |
96 JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { | |
97 if (thread->is_Java_thread()) { | |
98 _jthread = (JavaThread *)thread; | |
99 _saved_state = _jthread->thread_state(); | |
100 if (_saved_state == _thread_in_Java) { | |
101 ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); | |
102 } else { | |
103 ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); | |
104 } | |
105 } else { | |
106 _jthread = NULL; | |
107 } | |
108 } | |
109 | |
110 ~JvmtiThreadEventTransition() { | |
111 if (_jthread != NULL) | |
112 ThreadStateTransition::transition_from_native(_jthread, _saved_state); | |
113 } | |
114 }; | |
115 | |
116 | |
117 /////////////////////////////////////////////////////////////// | |
118 // | |
119 // JvmtiEventMark | |
120 // | |
121 | |
122 class JvmtiEventMark : public StackObj { | |
123 private: | |
124 JavaThread *_thread; | |
125 JNIEnv* _jni_env; | |
126 bool _exception_detected; | |
127 bool _exception_caught; | |
128 #if 0 | |
129 JNIHandleBlock* _hblock; | |
130 #endif | |
131 | |
132 public: | |
133 JvmtiEventMark(JavaThread *thread) : _thread(thread), | |
134 _jni_env(thread->jni_environment()) { | |
135 #if 0 | |
136 _hblock = thread->active_handles(); | |
137 _hblock->clear_thoroughly(); // so we can be safe | |
138 #else | |
139 // we want to use the code above - but that needs the JNIHandle changes - later... | |
140 // for now, steal JNI push local frame code | |
141 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
142 // we are before an event. | |
143 // Save current jvmti thread exception state. | |
144 if (state != NULL) { | |
145 _exception_detected = state->is_exception_detected(); | |
146 _exception_caught = state->is_exception_caught(); | |
147 } else { | |
148 _exception_detected = false; | |
149 _exception_caught = false; | |
150 } | |
151 | |
152 JNIHandleBlock* old_handles = thread->active_handles(); | |
153 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
154 assert(new_handles != NULL, "should not be NULL"); | |
155 new_handles->set_pop_frame_link(old_handles); | |
156 thread->set_active_handles(new_handles); | |
157 #endif | |
158 assert(thread == JavaThread::current(), "thread must be current!"); | |
159 thread->frame_anchor()->make_walkable(thread); | |
160 }; | |
161 | |
162 ~JvmtiEventMark() { | |
163 #if 0 | |
164 _hblock->clear(); // for consistency with future correct behavior | |
165 #else | |
166 // we want to use the code above - but that needs the JNIHandle changes - later... | |
167 // for now, steal JNI pop local frame code | |
168 JNIHandleBlock* old_handles = _thread->active_handles(); | |
169 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); | |
170 assert(new_handles != NULL, "should not be NULL"); | |
171 _thread->set_active_handles(new_handles); | |
172 // Note that we set the pop_frame_link to NULL explicitly, otherwise | |
173 // the release_block call will release the blocks. | |
174 old_handles->set_pop_frame_link(NULL); | |
175 JNIHandleBlock::release_block(old_handles, _thread); // may block | |
176 #endif | |
177 | |
178 JvmtiThreadState* state = _thread->jvmti_thread_state(); | |
179 // we are continuing after an event. | |
180 if (state != NULL) { | |
181 // Restore the jvmti thread exception state. | |
182 if (_exception_detected) { | |
183 state->set_exception_detected(); | |
184 } | |
185 if (_exception_caught) { | |
186 state->set_exception_caught(); | |
187 } | |
188 } | |
189 } | |
190 | |
191 #if 0 | |
192 jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } | |
193 #else | |
194 // we want to use the code above - but that needs the JNIHandle changes - later... | |
195 // for now, use regular make_local | |
196 jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } | |
197 #endif | |
198 | |
199 jclass to_jclass(klassOop klass) { return (klass == NULL ? NULL : (jclass)to_jobject(Klass::cast(klass)->java_mirror())); } | |
200 | |
201 jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } | |
202 | |
203 JNIEnv* jni_env() { return _jni_env; } | |
204 }; | |
205 | |
206 class JvmtiThreadEventMark : public JvmtiEventMark { | |
207 private: | |
208 jthread _jt; | |
209 | |
210 public: | |
211 JvmtiThreadEventMark(JavaThread *thread) : | |
212 JvmtiEventMark(thread) { | |
213 _jt = (jthread)(to_jobject(thread->threadObj())); | |
214 }; | |
215 jthread jni_thread() { return _jt; } | |
216 }; | |
217 | |
218 class JvmtiClassEventMark : public JvmtiThreadEventMark { | |
219 private: | |
220 jclass _jc; | |
221 | |
222 public: | |
223 JvmtiClassEventMark(JavaThread *thread, klassOop klass) : | |
224 JvmtiThreadEventMark(thread) { | |
225 _jc = to_jclass(klass); | |
226 }; | |
227 jclass jni_class() { return _jc; } | |
228 }; | |
229 | |
230 class JvmtiMethodEventMark : public JvmtiThreadEventMark { | |
231 private: | |
232 jmethodID _mid; | |
233 | |
234 public: | |
235 JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : | |
236 JvmtiThreadEventMark(thread), | |
237 _mid(to_jmethodID(method)) {}; | |
238 jmethodID jni_methodID() { return _mid; } | |
239 }; | |
240 | |
241 class JvmtiLocationEventMark : public JvmtiMethodEventMark { | |
242 private: | |
243 jlocation _loc; | |
244 | |
245 public: | |
246 JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : | |
247 JvmtiMethodEventMark(thread, method), | |
248 _loc(location - method->code_base()) {}; | |
249 jlocation location() { return _loc; } | |
250 }; | |
251 | |
252 class JvmtiExceptionEventMark : public JvmtiLocationEventMark { | |
253 private: | |
254 jobject _exc; | |
255 | |
256 public: | |
257 JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : | |
258 JvmtiLocationEventMark(thread, method, location), | |
259 _exc(to_jobject(exception())) {}; | |
260 jobject exception() { return _exc; } | |
261 }; | |
262 | |
263 class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { | |
264 private: | |
265 const char *_class_name; | |
266 jobject _jloader; | |
267 jobject _protection_domain; | |
268 jclass _class_being_redefined; | |
269 | |
270 public: | |
271 JvmtiClassFileLoadEventMark(JavaThread *thread, symbolHandle name, | |
272 Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { | |
273 _class_name = name() != NULL? name->as_utf8() : NULL; | |
274 _jloader = (jobject)to_jobject(class_loader()); | |
275 _protection_domain = (jobject)to_jobject(prot_domain()); | |
276 if (class_being_redefined == NULL) { | |
277 _class_being_redefined = NULL; | |
278 } else { | |
279 _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); | |
280 } | |
281 }; | |
282 const char *class_name() { | |
283 return _class_name; | |
284 } | |
285 jobject jloader() { | |
286 return _jloader; | |
287 } | |
288 jobject protection_domain() { | |
289 return _protection_domain; | |
290 } | |
291 jclass class_being_redefined() { | |
292 return _class_being_redefined; | |
293 } | |
294 }; | |
295 | |
296 ////////////////////////////////////////////////////////////////////////////// | |
297 | |
298 int JvmtiExport::_field_access_count = 0; | |
299 int JvmtiExport::_field_modification_count = 0; | |
300 | |
301 bool JvmtiExport::_can_access_local_variables = false; | |
302 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
303 bool JvmtiExport::_can_modify_any_class = false; | |
304 bool JvmtiExport::_can_walk_any_space = false; | |
305 | |
306 bool JvmtiExport::_has_redefined_a_class = false; | |
307 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
308 | |
309 // | |
310 // field access management | |
311 // | |
312 | |
313 // interpreter generator needs the address of the counter | |
314 address JvmtiExport::get_field_access_count_addr() { | |
315 // We don't grab a lock because we don't want to | |
316 // serialize field access between all threads. This means that a | |
317 // thread on another processor can see the wrong count value and | |
318 // may either miss making a needed call into post_field_access() | |
319 // or will make an unneeded call into post_field_access(). We pay | |
320 // this price to avoid slowing down the VM when we aren't watching | |
321 // field accesses. | |
322 // Other access/mutation safe by virtue of being in VM state. | |
323 return (address)(&_field_access_count); | |
324 } | |
325 | |
326 // | |
327 // field modification management | |
328 // | |
329 | |
330 // interpreter generator needs the address of the counter | |
331 address JvmtiExport::get_field_modification_count_addr() { | |
332 // We don't grab a lock because we don't | |
333 // want to serialize field modification between all threads. This | |
334 // means that a thread on another processor can see the wrong | |
335 // count value and may either miss making a needed call into | |
336 // post_field_modification() or will make an unneeded call into | |
337 // post_field_modification(). We pay this price to avoid slowing | |
338 // down the VM when we aren't watching field modifications. | |
339 // Other access/mutation safe by virtue of being in VM state. | |
340 return (address)(&_field_modification_count); | |
341 } | |
342 | |
343 | |
344 /////////////////////////////////////////////////////////////// | |
345 // Functions needed by java.lang.instrument for starting up javaagent. | |
346 /////////////////////////////////////////////////////////////// | |
347 | |
348 jint | |
349 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
1121 | 350 // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
351 // has already been validated in JNI GetEnv(). | |
352 int major, minor, micro; | |
353 | |
354 // micro version doesn't matter here (yet?) | |
355 decode_version_values(version, &major, &minor, µ); | |
356 switch (major) { | |
1988 | 357 case 1: |
1121 | 358 switch (minor) { |
1988 | 359 case 0: // version 1.0.<micro> is recognized |
360 case 1: // version 1.1.<micro> is recognized | |
361 case 2: // version 1.2.<micro> is recognized | |
1121 | 362 break; |
363 | |
1988 | 364 default: |
1121 | 365 return JNI_EVERSION; // unsupported minor version number |
366 } | |
367 break; | |
1988 | 368 default: |
1121 | 369 return JNI_EVERSION; // unsupported major version number |
370 } | |
0 | 371 |
372 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
373 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
374 // transition code: native to VM | |
375 ThreadInVMfromNative __tiv(current_thread); | |
376 __ENTRY(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) | |
377 debug_only(VMNativeEntryWrapper __vew;) | |
378 | |
1121 | 379 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 380 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
381 return JNI_OK; | |
382 | |
383 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
384 // not live, no thread to transition | |
1121 | 385 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 386 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
387 return JNI_OK; | |
388 | |
389 } else { | |
390 // Called at the wrong time | |
391 *penv = NULL; | |
392 return JNI_EDETACHED; | |
393 } | |
394 } | |
395 | |
1121 | 396 |
397 void | |
398 JvmtiExport::decode_version_values(jint version, int * major, int * minor, | |
399 int * micro) { | |
400 *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; | |
401 *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; | |
402 *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; | |
403 } | |
404 | |
0 | 405 void JvmtiExport::enter_primordial_phase() { |
406 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
407 } | |
408 | |
409 void JvmtiExport::enter_start_phase() { | |
410 JvmtiManageCapabilities::recompute_always_capabilities(); | |
411 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
412 } | |
413 | |
414 void JvmtiExport::enter_onload_phase() { | |
415 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
416 } | |
417 | |
418 void JvmtiExport::enter_live_phase() { | |
419 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
420 } | |
421 | |
422 // | |
423 // JVMTI events that the VM posts to the debugger and also startup agent | |
424 // and call the agent's premain() for java.lang.instrument. | |
425 // | |
426 | |
427 void JvmtiExport::post_vm_start() { | |
428 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
429 | |
430 // can now enable some events | |
431 JvmtiEventController::vm_start(); | |
432 | |
433 JvmtiEnvIterator it; | |
434 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
435 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
436 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
437 | |
438 JavaThread *thread = JavaThread::current(); | |
439 JvmtiThreadEventMark jem(thread); | |
440 JvmtiJavaThreadEventTransition jet(thread); | |
441 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
442 if (callback != NULL) { | |
443 (*callback)(env->jvmti_external(), jem.jni_env()); | |
444 } | |
445 } | |
446 } | |
447 } | |
448 | |
449 | |
450 void JvmtiExport::post_vm_initialized() { | |
451 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
452 | |
453 // can now enable events | |
454 JvmtiEventController::vm_init(); | |
455 | |
456 JvmtiEnvIterator it; | |
457 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
458 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
459 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
460 | |
461 JavaThread *thread = JavaThread::current(); | |
462 JvmtiThreadEventMark jem(thread); | |
463 JvmtiJavaThreadEventTransition jet(thread); | |
464 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
465 if (callback != NULL) { | |
466 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
467 } | |
468 } | |
469 } | |
470 } | |
471 | |
472 | |
473 void JvmtiExport::post_vm_death() { | |
474 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
475 | |
476 JvmtiEnvIterator it; | |
477 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
478 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
479 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
480 | |
481 JavaThread *thread = JavaThread::current(); | |
482 JvmtiEventMark jem(thread); | |
483 JvmtiJavaThreadEventTransition jet(thread); | |
484 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
485 if (callback != NULL) { | |
486 (*callback)(env->jvmti_external(), jem.jni_env()); | |
487 } | |
488 } | |
489 } | |
490 | |
491 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
492 JvmtiEventController::vm_death(); | |
493 } | |
494 | |
495 char** | |
496 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
497 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
498 // go away while we iterate them. No locks during VM bring-up. | |
499 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
500 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
501 } else { | |
502 MutexLocker mu(JvmtiThreadState_lock); | |
503 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
504 } | |
505 } | |
506 | |
507 class JvmtiClassFileLoadHookPoster : public StackObj { | |
508 private: | |
509 symbolHandle _h_name; | |
510 Handle _class_loader; | |
511 Handle _h_protection_domain; | |
512 unsigned char ** _data_ptr; | |
513 unsigned char ** _end_ptr; | |
514 JavaThread * _thread; | |
515 jint _curr_len; | |
516 unsigned char * _curr_data; | |
517 JvmtiEnv * _curr_env; | |
518 jint * _cached_length_ptr; | |
519 unsigned char ** _cached_data_ptr; | |
520 JvmtiThreadState * _state; | |
521 KlassHandle * _h_class_being_redefined; | |
522 JvmtiClassLoadKind _load_kind; | |
523 | |
524 public: | |
525 inline JvmtiClassFileLoadHookPoster(symbolHandle h_name, Handle class_loader, | |
526 Handle h_protection_domain, | |
527 unsigned char **data_ptr, unsigned char **end_ptr, | |
528 unsigned char **cached_data_ptr, | |
529 jint *cached_length_ptr) { | |
530 _h_name = h_name; | |
531 _class_loader = class_loader; | |
532 _h_protection_domain = h_protection_domain; | |
533 _data_ptr = data_ptr; | |
534 _end_ptr = end_ptr; | |
535 _thread = JavaThread::current(); | |
536 _curr_len = *end_ptr - *data_ptr; | |
537 _curr_data = *data_ptr; | |
538 _curr_env = NULL; | |
539 _cached_length_ptr = cached_length_ptr; | |
540 _cached_data_ptr = cached_data_ptr; | |
541 *_cached_length_ptr = 0; | |
542 *_cached_data_ptr = NULL; | |
543 | |
544 _state = _thread->jvmti_thread_state(); | |
545 if (_state != NULL) { | |
546 _h_class_being_redefined = _state->get_class_being_redefined(); | |
547 _load_kind = _state->get_class_load_kind(); | |
548 // Clear class_being_redefined flag here. The action | |
549 // from agent handler could generate a new class file load | |
550 // hook event and if it is not cleared the new event generated | |
551 // from regular class file load could have this stale redefined | |
552 // class handle info. | |
553 _state->clear_class_being_redefined(); | |
554 } else { | |
555 // redefine and retransform will always set the thread state | |
556 _h_class_being_redefined = (KlassHandle *) NULL; | |
557 _load_kind = jvmti_class_load_kind_load; | |
558 } | |
559 } | |
560 | |
561 void post() { | |
562 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
563 // ("JVMTI [%s] class file load hook event triggered", | |
564 // JvmtiTrace::safe_get_thread_name(_thread))); | |
565 post_all_envs(); | |
566 copy_modified_data(); | |
567 } | |
568 | |
569 private: | |
570 void post_all_envs() { | |
571 if (_load_kind != jvmti_class_load_kind_retransform) { | |
572 // for class load and redefine, | |
573 // call the non-retransformable agents | |
574 JvmtiEnvIterator it; | |
575 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
576 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
577 // non-retransformable agents cannot retransform back, | |
578 // so no need to cache the original class file bytes | |
579 post_to_env(env, false); | |
580 } | |
581 } | |
582 } | |
583 JvmtiEnvIterator it; | |
584 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
585 // retransformable agents get all events | |
586 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
587 // retransformable agents need to cache the original class file | |
588 // bytes if changes are made via the ClassFileLoadHook | |
589 post_to_env(env, true); | |
590 } | |
591 } | |
592 } | |
593 | |
594 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
595 unsigned char *new_data = NULL; | |
596 jint new_len = 0; | |
597 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
598 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
599 // JvmtiTrace::safe_get_thread_name(_thread), | |
600 // _h_name.is_null() ? "NULL" : _h_name->as_utf8(), | |
601 // _curr_data, _curr_len )); | |
602 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
603 _h_protection_domain, | |
604 _h_class_being_redefined); | |
605 JvmtiJavaThreadEventTransition jet(_thread); | |
606 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
607 NULL : jem.jni_env(); | |
608 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
609 if (callback != NULL) { | |
610 (*callback)(env->jvmti_external(), jni_env, | |
611 jem.class_being_redefined(), | |
612 jem.jloader(), jem.class_name(), | |
613 jem.protection_domain(), | |
614 _curr_len, _curr_data, | |
615 &new_len, &new_data); | |
616 } | |
617 if (new_data != NULL) { | |
618 // this agent has modified class data. | |
619 if (caching_needed && *_cached_data_ptr == NULL) { | |
620 // data has been changed by the new retransformable agent | |
621 // and it hasn't already been cached, cache it | |
622 *_cached_data_ptr = (unsigned char *)os::malloc(_curr_len); | |
623 memcpy(*_cached_data_ptr, _curr_data, _curr_len); | |
624 *_cached_length_ptr = _curr_len; | |
625 } | |
626 | |
627 if (_curr_data != *_data_ptr) { | |
628 // curr_data is previous agent modified class data. | |
629 // And this has been changed by the new agent so | |
630 // we can delete it now. | |
631 _curr_env->Deallocate(_curr_data); | |
632 } | |
633 | |
634 // Class file data has changed by the current agent. | |
635 _curr_data = new_data; | |
636 _curr_len = new_len; | |
637 // Save the current agent env we need this to deallocate the | |
638 // memory allocated by this agent. | |
639 _curr_env = env; | |
640 } | |
641 } | |
642 | |
643 void copy_modified_data() { | |
644 // if one of the agent has modified class file data. | |
645 // Copy modified class data to new resources array. | |
646 if (_curr_data != *_data_ptr) { | |
647 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
648 memcpy(*_data_ptr, _curr_data, _curr_len); | |
649 *_end_ptr = *_data_ptr + _curr_len; | |
650 _curr_env->Deallocate(_curr_data); | |
651 } | |
652 } | |
653 }; | |
654 | |
655 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
656 | |
657 // this entry is for class file load hook on class load, redefine and retransform | |
658 void JvmtiExport::post_class_file_load_hook(symbolHandle h_name, | |
659 Handle class_loader, | |
660 Handle h_protection_domain, | |
661 unsigned char **data_ptr, | |
662 unsigned char **end_ptr, | |
663 unsigned char **cached_data_ptr, | |
664 jint *cached_length_ptr) { | |
665 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, | |
666 h_protection_domain, | |
667 data_ptr, end_ptr, | |
668 cached_data_ptr, | |
669 cached_length_ptr); | |
670 poster.post(); | |
671 } | |
672 | |
673 void JvmtiExport::report_unsupported(bool on) { | |
674 // If any JVMTI service is turned on, we need to exit before native code | |
675 // tries to access nonexistant services. | |
676 if (on) { | |
677 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
678 } | |
679 } | |
680 | |
681 | |
682 #ifndef JVMTI_KERNEL | |
683 static inline klassOop oop_to_klassOop(oop obj) { | |
684 klassOop k = obj->klass(); | |
685 | |
686 // if the object is a java.lang.Class then return the java mirror | |
1142 | 687 if (k == SystemDictionary::Class_klass()) { |
0 | 688 if (!java_lang_Class::is_primitive(obj)) { |
689 k = java_lang_Class::as_klassOop(obj); | |
690 assert(k != NULL, "class for non-primitive mirror must exist"); | |
691 } | |
692 } | |
693 return k; | |
694 } | |
695 | |
696 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
697 private: | |
698 jobject _jobj; | |
699 jlong _size; | |
700 public: | |
701 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klassOop(obj)) { | |
702 _jobj = (jobject)to_jobject(obj); | |
703 _size = obj->size() * wordSize; | |
704 }; | |
705 jobject jni_jobject() { return _jobj; } | |
706 jlong size() { return _size; } | |
707 }; | |
708 | |
709 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
710 private: | |
711 jint _code_size; | |
712 const void *_code_data; | |
713 jint _map_length; | |
714 jvmtiAddrLocationMap *_map; | |
715 const void *_compile_info; | |
716 public: | |
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717 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
0 | 718 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
1748 | 719 _code_data = nm->insts_begin(); |
720 _code_size = nm->insts_size(); | |
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721 _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
0 | 722 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
723 } | |
724 ~JvmtiCompiledMethodLoadEventMark() { | |
725 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map); | |
726 } | |
727 | |
728 jint code_size() { return _code_size; } | |
729 const void *code_data() { return _code_data; } | |
730 jint map_length() { return _map_length; } | |
731 const jvmtiAddrLocationMap* map() { return _map; } | |
732 const void *compile_info() { return _compile_info; } | |
733 }; | |
734 | |
735 | |
736 | |
737 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
738 private: | |
739 jobject _jobj; | |
740 public: | |
741 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
742 : JvmtiThreadEventMark(thread){ | |
743 _jobj = to_jobject(object); | |
744 } | |
745 jobject jni_object() { return _jobj; } | |
746 }; | |
747 | |
748 /////////////////////////////////////////////////////////////// | |
749 // | |
750 // pending CompiledMethodUnload support | |
751 // | |
752 | |
753 bool JvmtiExport::_have_pending_compiled_method_unload_events; | |
754 GrowableArray<jmethodID>* JvmtiExport::_pending_compiled_method_unload_method_ids; | |
755 GrowableArray<const void *>* JvmtiExport::_pending_compiled_method_unload_code_begins; | |
756 JavaThread* JvmtiExport::_current_poster; | |
757 | |
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758 void JvmtiExport::post_compiled_method_unload_internal(JavaThread* self, jmethodID method, const void *code_begin) { |
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759 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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760 ("JVMTI [%s] method compile unload event triggered", |
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761 JvmtiTrace::safe_get_thread_name(self))); |
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762 |
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763 // post the event for each environment that has this event enabled. |
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764 JvmtiEnvIterator it; |
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765 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
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766 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
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767 |
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768 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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769 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
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770 JvmtiTrace::safe_get_thread_name(self), method)); |
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771 |
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772 ResourceMark rm(self); |
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773 |
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774 JvmtiEventMark jem(self); |
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775 JvmtiJavaThreadEventTransition jet(self); |
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776 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
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777 if (callback != NULL) { |
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778 (*callback)(env->jvmti_external(), method, code_begin); |
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779 } |
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780 } |
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781 } |
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782 } |
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783 |
0 | 784 // post any pending CompiledMethodUnload events |
785 | |
786 void JvmtiExport::post_pending_compiled_method_unload_events() { | |
787 JavaThread* self = JavaThread::current(); | |
788 assert(!self->owns_locks(), "can't hold locks"); | |
789 | |
790 // Indicates if this is the first activiation of this function. | |
791 // In theory the profiler's callback could call back into VM and provoke | |
792 // another CompiledMethodLoad event to be posted from this thread. As the | |
793 // stack rewinds we need to ensure that the original activation does the | |
794 // completion and notifies any waiters. | |
795 bool first_activation = false; | |
796 | |
797 // the jmethodID (may not be valid) to be used for a single event | |
798 jmethodID method; | |
799 const void *code_begin; | |
800 | |
801 // grab the monitor and check if another thread is already posting | |
802 // events. If there is another thread posting events then we wait | |
803 // until it completes. (In theory we could check the pending events to | |
804 // see if any of the addresses overlap with the event that we want to | |
805 // post but as it will happen so rarely we just block any thread waiting | |
806 // to post a CompiledMethodLoad or DynamicCodeGenerated event until all | |
807 // pending CompiledMethodUnload events have been posted). | |
808 // | |
809 // If another thread isn't posting we examine the list of pending jmethodIDs. | |
810 // If the list is empty then we are done. If it's not empty then this thread | |
811 // (self) becomes the pending event poster and we remove the top (last) | |
812 // event from the list. Note that this means we remove the newest event first | |
813 // but as they are all CompiledMethodUnload events the order doesn't matter. | |
814 // Once we have removed a jmethodID then we exit the monitor. Any other thread | |
815 // wanting to post a CompiledMethodLoad or DynamicCodeGenerated event will | |
816 // be forced to wait on the monitor. | |
817 { | |
818 MutexLocker mu(JvmtiPendingEvent_lock); | |
819 if (_current_poster != self) { | |
820 while (_current_poster != NULL) { | |
821 JvmtiPendingEvent_lock->wait(); | |
822 } | |
823 } | |
824 if ((_pending_compiled_method_unload_method_ids == NULL) || | |
825 (_pending_compiled_method_unload_method_ids->length() == 0)) { | |
826 return; | |
827 } | |
828 if (_current_poster == NULL) { | |
829 _current_poster = self; | |
830 first_activation = true; | |
831 } else { | |
832 // re-entrant | |
833 guarantee(_current_poster == self, "checking"); | |
834 } | |
835 method = _pending_compiled_method_unload_method_ids->pop(); | |
836 code_begin = _pending_compiled_method_unload_code_begins->pop(); | |
837 } | |
838 | |
839 // This thread is the pending event poster so it first posts the CompiledMethodUnload | |
840 // event for the jmethodID that has been removed from the list. Once posted it | |
841 // re-grabs the monitor and checks the list again. If the list is empty then and this | |
842 // is the first activation of the function then we reset the _have_pending_events | |
843 // flag, cleanup _current_poster to indicate that no thread is now servicing the | |
844 // pending events list, and finally notify any thread that might be waiting. | |
845 for (;;) { | |
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846 post_compiled_method_unload_internal(self, method, code_begin); |
0 | 847 |
848 // event posted, now re-grab monitor and get the next event | |
849 // If there's no next event then we are done. If this is the first | |
850 // activiation of this function by this thread notify any waiters | |
851 // so that they can post. | |
852 { | |
853 MutexLocker ml(JvmtiPendingEvent_lock); | |
854 if (_pending_compiled_method_unload_method_ids->length() == 0) { | |
855 if (first_activation) { | |
856 _have_pending_compiled_method_unload_events = false; | |
857 _current_poster = NULL; | |
858 JvmtiPendingEvent_lock->notify_all(); | |
859 } | |
860 return; | |
861 } | |
862 method = _pending_compiled_method_unload_method_ids->pop(); | |
863 code_begin = _pending_compiled_method_unload_code_begins->pop(); | |
864 } | |
865 } | |
866 } | |
867 | |
868 /////////////////////////////////////////////////////////////// | |
869 // | |
870 // JvmtiExport | |
871 // | |
872 | |
873 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, methodOop method, address location) { | |
874 HandleMark hm(thread); | |
875 methodHandle mh(thread, method); | |
876 | |
877 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
878 if (state == NULL) { | |
879 return; | |
880 } | |
881 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
882 JvmtiTrace::safe_get_thread_name(thread))); | |
883 JvmtiEnvThreadStateIterator it(state); | |
884 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
885 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
886 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
887 ThreadState old_os_state = thread->osthread()->get_state(); | |
888 thread->osthread()->set_state(BREAKPOINTED); | |
889 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
890 JvmtiTrace::safe_get_thread_name(thread), | |
891 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
892 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
893 location - mh()->code_base() )); | |
894 | |
895 JvmtiEnv *env = ets->get_env(); | |
896 JvmtiLocationEventMark jem(thread, mh, location); | |
897 JvmtiJavaThreadEventTransition jet(thread); | |
898 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
899 if (callback != NULL) { | |
900 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
901 jem.jni_methodID(), jem.location()); | |
902 } | |
903 | |
904 ets->set_breakpoint_posted(); | |
905 thread->osthread()->set_state(old_os_state); | |
906 } | |
907 } | |
908 } | |
909 | |
910 ////////////////////////////////////////////////////////////////////////////// | |
911 | |
912 bool JvmtiExport::_can_get_source_debug_extension = false; | |
913 bool JvmtiExport::_can_maintain_original_method_order = false; | |
914 bool JvmtiExport::_can_post_interpreter_events = false; | |
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915 bool JvmtiExport::_can_post_on_exceptions = false; |
0 | 916 bool JvmtiExport::_can_post_breakpoint = false; |
917 bool JvmtiExport::_can_post_field_access = false; | |
918 bool JvmtiExport::_can_post_field_modification = false; | |
919 bool JvmtiExport::_can_post_method_entry = false; | |
920 bool JvmtiExport::_can_post_method_exit = false; | |
921 bool JvmtiExport::_can_pop_frame = false; | |
922 bool JvmtiExport::_can_force_early_return = false; | |
923 | |
924 bool JvmtiExport::_should_post_single_step = false; | |
925 bool JvmtiExport::_should_post_field_access = false; | |
926 bool JvmtiExport::_should_post_field_modification = false; | |
927 bool JvmtiExport::_should_post_class_load = false; | |
928 bool JvmtiExport::_should_post_class_prepare = false; | |
929 bool JvmtiExport::_should_post_class_unload = false; | |
930 bool JvmtiExport::_should_post_thread_life = false; | |
931 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
932 bool JvmtiExport::_should_post_native_method_bind = false; | |
933 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
934 bool JvmtiExport::_should_post_data_dump = false; | |
935 bool JvmtiExport::_should_post_compiled_method_load = false; | |
936 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
937 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
938 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
939 bool JvmtiExport::_should_post_monitor_wait = false; | |
940 bool JvmtiExport::_should_post_monitor_waited = false; | |
941 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
942 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
943 bool JvmtiExport::_should_post_object_free = false; | |
944 bool JvmtiExport::_should_post_resource_exhausted = false; | |
945 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
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946 bool JvmtiExport::_should_post_on_exceptions = false; |
0 | 947 |
948 //////////////////////////////////////////////////////////////////////////////////////////////// | |
949 | |
950 | |
951 // | |
952 // JVMTI single step management | |
953 // | |
954 void JvmtiExport::at_single_stepping_point(JavaThread *thread, methodOop method, address location) { | |
955 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); | |
956 | |
957 HandleMark hm(thread); | |
958 methodHandle mh(thread, method); | |
959 | |
960 // update information about current location and post a step event | |
961 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
962 if (state == NULL) { | |
963 return; | |
964 } | |
965 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
966 JvmtiTrace::safe_get_thread_name(thread))); | |
967 if (!state->hide_single_stepping()) { | |
968 if (state->is_pending_step_for_popframe()) { | |
969 state->process_pending_step_for_popframe(); | |
970 } | |
971 if (state->is_pending_step_for_earlyret()) { | |
972 state->process_pending_step_for_earlyret(); | |
973 } | |
974 JvmtiExport::post_single_step(thread, mh(), location); | |
975 } | |
976 } | |
977 | |
978 | |
979 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
980 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
981 if (state != NULL) { | |
982 state->clear_hide_single_stepping(); | |
983 } | |
984 } | |
985 | |
986 | |
987 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
988 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
989 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
990 state->set_hide_single_stepping(); | |
991 return true; | |
992 } else { | |
993 return false; | |
994 } | |
995 } | |
996 | |
997 void JvmtiExport::post_class_load(JavaThread *thread, klassOop klass) { | |
998 HandleMark hm(thread); | |
999 KlassHandle kh(thread, klass); | |
1000 | |
1001 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
1002 JvmtiTrace::safe_get_thread_name(thread))); | |
1003 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1004 if (state == NULL) { | |
1005 return; | |
1006 } | |
1007 JvmtiEnvThreadStateIterator it(state); | |
1008 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1009 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
1010 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
1011 JvmtiTrace::safe_get_thread_name(thread), | |
1012 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
1013 | |
1014 JvmtiEnv *env = ets->get_env(); | |
1015 JvmtiClassEventMark jem(thread, kh()); | |
1016 JvmtiJavaThreadEventTransition jet(thread); | |
1017 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
1018 if (callback != NULL) { | |
1019 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
1020 } | |
1021 } | |
1022 } | |
1023 } | |
1024 | |
1025 | |
1026 void JvmtiExport::post_class_prepare(JavaThread *thread, klassOop klass) { | |
1027 HandleMark hm(thread); | |
1028 KlassHandle kh(thread, klass); | |
1029 | |
1030 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
1031 JvmtiTrace::safe_get_thread_name(thread))); | |
1032 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1033 if (state == NULL) { | |
1034 return; | |
1035 } | |
1036 JvmtiEnvThreadStateIterator it(state); | |
1037 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1038 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
1039 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
1040 JvmtiTrace::safe_get_thread_name(thread), | |
1041 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
1042 | |
1043 JvmtiEnv *env = ets->get_env(); | |
1044 JvmtiClassEventMark jem(thread, kh()); | |
1045 JvmtiJavaThreadEventTransition jet(thread); | |
1046 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
1047 if (callback != NULL) { | |
1048 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
1049 } | |
1050 } | |
1051 } | |
1052 } | |
1053 | |
1054 void JvmtiExport::post_class_unload(klassOop klass) { | |
1055 Thread *thread = Thread::current(); | |
1056 HandleMark hm(thread); | |
1057 KlassHandle kh(thread, klass); | |
1058 | |
1059 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
1060 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
1061 assert(thread->is_VM_thread(), "wrong thread"); | |
1062 | |
1063 // get JavaThread for whom we are proxy | |
1064 JavaThread *real_thread = | |
1065 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
1066 | |
1067 JvmtiEnvIterator it; | |
1068 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1069 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
1070 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
1071 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
1072 | |
1073 // do everything manually, since this is a proxy - needs special care | |
1074 JNIEnv* jni_env = real_thread->jni_environment(); | |
1075 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
1076 jclass jk = (jclass)JNIHandles::make_local(real_thread, Klass::cast(kh())->java_mirror()); | |
1077 | |
1078 // Before we call the JVMTI agent, we have to set the state in the | |
1079 // thread for which we are proxying. | |
1080 JavaThreadState prev_state = real_thread->thread_state(); | |
1081 assert(prev_state == _thread_blocked, "JavaThread should be at safepoint"); | |
1082 real_thread->set_thread_state(_thread_in_native); | |
1083 | |
1084 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
1085 if (callback != NULL) { | |
1086 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
1087 } | |
1088 | |
1089 assert(real_thread->thread_state() == _thread_in_native, | |
1090 "JavaThread should be in native"); | |
1091 real_thread->set_thread_state(prev_state); | |
1092 | |
1093 JNIHandles::destroy_local(jk); | |
1094 JNIHandles::destroy_local(jt); | |
1095 } | |
1096 } | |
1097 } | |
1098 } | |
1099 | |
1100 | |
1101 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
1102 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1103 | |
1104 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
1105 JvmtiTrace::safe_get_thread_name(thread))); | |
1106 | |
1107 // do JVMTI thread initialization (if needed) | |
1108 JvmtiEventController::thread_started(thread); | |
1109 | |
1110 // Do not post thread start event for hidden java thread. | |
1111 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
1112 !thread->is_hidden_from_external_view()) { | |
1113 JvmtiEnvIterator it; | |
1114 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1115 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
1116 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
1117 JvmtiTrace::safe_get_thread_name(thread) )); | |
1118 | |
1119 JvmtiThreadEventMark jem(thread); | |
1120 JvmtiJavaThreadEventTransition jet(thread); | |
1121 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
1122 if (callback != NULL) { | |
1123 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1124 } | |
1125 } | |
1126 } | |
1127 } | |
1128 } | |
1129 | |
1130 | |
1131 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
1132 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
1133 JvmtiTrace::safe_get_thread_name(thread))); | |
1134 | |
1135 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1136 if (state == NULL) { | |
1137 return; | |
1138 } | |
1139 | |
1140 // Do not post thread end event for hidden java thread. | |
1141 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
1142 !thread->is_hidden_from_external_view()) { | |
1143 | |
1144 JvmtiEnvThreadStateIterator it(state); | |
1145 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1146 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
1147 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
1148 JvmtiTrace::safe_get_thread_name(thread) )); | |
1149 | |
1150 JvmtiEnv *env = ets->get_env(); | |
1151 JvmtiThreadEventMark jem(thread); | |
1152 JvmtiJavaThreadEventTransition jet(thread); | |
1153 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
1154 if (callback != NULL) { | |
1155 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1156 } | |
1157 } | |
1158 } | |
1159 } | |
1160 } | |
1161 | |
1162 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
1163 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
1164 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
1165 | |
1166 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
1167 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
1168 | |
1169 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
1170 if (callback != NULL) { | |
1171 (*callback)(env->jvmti_external(), tag); | |
1172 } | |
1173 } | |
1174 | |
1175 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
1176 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
1177 | |
1178 JvmtiEnvIterator it; | |
1179 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1180 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
1181 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
1182 | |
1183 JavaThread *thread = JavaThread::current(); | |
1184 JvmtiThreadEventMark jem(thread); | |
1185 JvmtiJavaThreadEventTransition jet(thread); | |
1186 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
1187 if (callback != NULL) { | |
1188 (*callback)(env->jvmti_external(), jem.jni_env(), | |
1189 resource_exhausted_flags, NULL, description); | |
1190 } | |
1191 } | |
1192 } | |
1193 } | |
1194 | |
1195 void JvmtiExport::post_method_entry(JavaThread *thread, methodOop method, frame current_frame) { | |
1196 HandleMark hm(thread); | |
1197 methodHandle mh(thread, method); | |
1198 | |
1199 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
1200 JvmtiTrace::safe_get_thread_name(thread), | |
1201 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1202 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1203 | |
1204 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1205 if (state == NULL || !state->is_interp_only_mode()) { | |
1206 // for any thread that actually wants method entry, interp_only_mode is set | |
1207 return; | |
1208 } | |
1209 | |
1210 state->incr_cur_stack_depth(); | |
1211 | |
1212 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1213 JvmtiEnvThreadStateIterator it(state); | |
1214 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1215 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1216 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
1217 JvmtiTrace::safe_get_thread_name(thread), | |
1218 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1219 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1220 | |
1221 JvmtiEnv *env = ets->get_env(); | |
1222 JvmtiMethodEventMark jem(thread, mh); | |
1223 JvmtiJavaThreadEventTransition jet(thread); | |
1224 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
1225 if (callback != NULL) { | |
1226 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
1227 } | |
1228 } | |
1229 } | |
1230 } | |
1231 } | |
1232 | |
1233 void JvmtiExport::post_method_exit(JavaThread *thread, methodOop method, frame current_frame) { | |
1234 HandleMark hm(thread); | |
1235 methodHandle mh(thread, method); | |
1236 | |
1237 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
1238 JvmtiTrace::safe_get_thread_name(thread), | |
1239 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1240 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1241 | |
1242 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1243 if (state == NULL || !state->is_interp_only_mode()) { | |
1244 // for any thread that actually wants method exit, interp_only_mode is set | |
1245 return; | |
1246 } | |
1247 | |
1248 // return a flag when a method terminates by throwing an exception | |
1249 // i.e. if an exception is thrown and it's not caught by the current method | |
1250 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
1251 | |
1252 | |
1253 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1254 Handle result; | |
1255 jvalue value; | |
1256 value.j = 0L; | |
1257 | |
1258 // if the method hasn't been popped because of an exception then we populate | |
1259 // the return_value parameter for the callback. At this point we only have | |
1260 // the address of a "raw result" and we just call into the interpreter to | |
1261 // convert this into a jvalue. | |
1262 if (!exception_exit) { | |
1263 oop oop_result; | |
1264 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
1265 if (type == T_OBJECT || type == T_ARRAY) { | |
1266 result = Handle(thread, oop_result); | |
1267 } | |
1268 } | |
1269 | |
1270 JvmtiEnvThreadStateIterator it(state); | |
1271 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1272 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1273 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", | |
1274 JvmtiTrace::safe_get_thread_name(thread), | |
1275 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1276 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1277 | |
1278 JvmtiEnv *env = ets->get_env(); | |
1279 JvmtiMethodEventMark jem(thread, mh); | |
1280 if (result.not_null()) { | |
1281 value.l = JNIHandles::make_local(thread, result()); | |
1282 } | |
1283 JvmtiJavaThreadEventTransition jet(thread); | |
1284 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
1285 if (callback != NULL) { | |
1286 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1287 jem.jni_methodID(), exception_exit, value); | |
1288 } | |
1289 } | |
1290 } | |
1291 } | |
1292 | |
1293 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1294 JvmtiEnvThreadStateIterator it(state); | |
1295 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1296 int cur_frame_number = state->cur_stack_depth(); | |
1297 | |
1298 if (ets->is_frame_pop(cur_frame_number)) { | |
1299 // we have a NotifyFramePop entry for this frame. | |
1300 // now check that this env/thread wants this event | |
1301 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1302 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
1303 JvmtiTrace::safe_get_thread_name(thread), | |
1304 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1305 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1306 | |
1307 // we also need to issue a frame pop event for this frame | |
1308 JvmtiEnv *env = ets->get_env(); | |
1309 JvmtiMethodEventMark jem(thread, mh); | |
1310 JvmtiJavaThreadEventTransition jet(thread); | |
1311 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
1312 if (callback != NULL) { | |
1313 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1314 jem.jni_methodID(), exception_exit); | |
1315 } | |
1316 } | |
1317 // remove the frame's entry | |
1318 ets->clear_frame_pop(cur_frame_number); | |
1319 } | |
1320 } | |
1321 } | |
1322 | |
1323 state->decr_cur_stack_depth(); | |
1324 } | |
1325 | |
1326 | |
1327 // Todo: inline this for optimization | |
1328 void JvmtiExport::post_single_step(JavaThread *thread, methodOop method, address location) { | |
1329 HandleMark hm(thread); | |
1330 methodHandle mh(thread, method); | |
1331 | |
1332 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1333 if (state == NULL) { | |
1334 return; | |
1335 } | |
1336 JvmtiEnvThreadStateIterator it(state); | |
1337 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1338 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
1339 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
1340 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
1341 JvmtiTrace::safe_get_thread_name(thread), | |
1342 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1343 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1344 location - mh()->code_base() )); | |
1345 | |
1346 JvmtiEnv *env = ets->get_env(); | |
1347 JvmtiLocationEventMark jem(thread, mh, location); | |
1348 JvmtiJavaThreadEventTransition jet(thread); | |
1349 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
1350 if (callback != NULL) { | |
1351 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1352 jem.jni_methodID(), jem.location()); | |
1353 } | |
1354 | |
1355 ets->set_single_stepping_posted(); | |
1356 } | |
1357 } | |
1358 } | |
1359 | |
1360 | |
1361 void JvmtiExport::post_exception_throw(JavaThread *thread, methodOop method, address location, oop exception) { | |
1362 HandleMark hm(thread); | |
1363 methodHandle mh(thread, method); | |
1364 Handle exception_handle(thread, exception); | |
1365 | |
1366 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1367 if (state == NULL) { | |
1368 return; | |
1369 } | |
1370 | |
1371 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
1372 JvmtiTrace::safe_get_thread_name(thread))); | |
1373 if (!state->is_exception_detected()) { | |
1374 state->set_exception_detected(); | |
1375 JvmtiEnvThreadStateIterator it(state); | |
1376 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1377 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
1378 | |
1379 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
1380 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
1381 JvmtiTrace::safe_get_thread_name(thread), | |
1382 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1383 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1384 location - mh()->code_base() )); | |
1385 | |
1386 JvmtiEnv *env = ets->get_env(); | |
1387 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1388 | |
1389 // It's okay to clear these exceptions here because we duplicate | |
1390 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
1391 EXCEPTION_MARK; | |
1392 | |
1393 bool should_repeat; | |
1394 vframeStream st(thread); | |
1395 assert(!st.at_end(), "cannot be at end"); | |
1396 methodOop current_method = NULL; | |
1397 int current_bci = -1; | |
1398 do { | |
1399 current_method = st.method(); | |
1400 current_bci = st.bci(); | |
1401 do { | |
1402 should_repeat = false; | |
1403 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
1404 current_bci = current_method->fast_exception_handler_bci_for( | |
1405 eh_klass, current_bci, THREAD); | |
1406 if (HAS_PENDING_EXCEPTION) { | |
1407 exception_handle = KlassHandle(thread, PENDING_EXCEPTION); | |
1408 CLEAR_PENDING_EXCEPTION; | |
1409 should_repeat = true; | |
1410 } | |
1411 } while (should_repeat && (current_bci != -1)); | |
1412 st.next(); | |
1413 } while ((current_bci < 0) && (!st.at_end())); | |
1414 | |
1415 jmethodID catch_jmethodID; | |
1416 if (current_bci < 0) { | |
1417 catch_jmethodID = 0; | |
1418 current_bci = 0; | |
1419 } else { | |
1420 catch_jmethodID = jem.to_jmethodID( | |
1421 methodHandle(thread, current_method)); | |
1422 } | |
1423 | |
1424 JvmtiJavaThreadEventTransition jet(thread); | |
1425 jvmtiEventException callback = env->callbacks()->Exception; | |
1426 if (callback != NULL) { | |
1427 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1428 jem.jni_methodID(), jem.location(), | |
1429 jem.exception(), | |
1430 catch_jmethodID, current_bci); | |
1431 } | |
1432 } | |
1433 } | |
1434 } | |
1435 | |
1436 // frames may get popped because of this throw, be safe - invalidate cached depth | |
1437 state->invalidate_cur_stack_depth(); | |
1438 } | |
1439 | |
1440 | |
1441 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, methodOop method, address location, oop exception, bool in_handler_frame) { | |
1442 HandleMark hm(thread); | |
1443 methodHandle mh(thread, method); | |
1444 Handle exception_handle(thread, exception); | |
1445 | |
1446 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1447 if (state == NULL) { | |
1448 return; | |
1449 } | |
1450 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1451 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
1452 JvmtiTrace::safe_get_thread_name(thread), | |
1453 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1454 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1455 location==0? "no location:" : "", | |
1456 location==0? 0 : location - mh()->code_base(), | |
1457 in_handler_frame? "in handler frame" : "not handler frame" )); | |
1458 | |
1459 if (state->is_exception_detected()) { | |
1460 | |
1461 state->invalidate_cur_stack_depth(); | |
1462 if (!in_handler_frame) { | |
1463 // Not in exception handler. | |
1464 if(state->is_interp_only_mode()) { | |
1465 // method exit and frame pop events are posted only in interp mode. | |
1466 // When these events are enabled code should be in running in interp mode. | |
1467 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
1468 // The cached cur_stack_depth might have changed from the | |
1469 // operations of frame pop or method exit. We are not 100% sure | |
1470 // the cached cur_stack_depth is still valid depth so invalidate | |
1471 // it. | |
1472 state->invalidate_cur_stack_depth(); | |
1473 } | |
1474 } else { | |
1475 // In exception handler frame. Report exception catch. | |
1476 assert(location != NULL, "must be a known location"); | |
1477 // Update cur_stack_depth - the frames above the current frame | |
1478 // have been unwound due to this exception: | |
1479 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
1480 state->set_exception_caught(); | |
1481 | |
1482 JvmtiEnvThreadStateIterator it(state); | |
1483 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1484 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
1485 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1486 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
1487 JvmtiTrace::safe_get_thread_name(thread), | |
1488 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1489 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1490 location - mh()->code_base() )); | |
1491 | |
1492 JvmtiEnv *env = ets->get_env(); | |
1493 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1494 JvmtiJavaThreadEventTransition jet(thread); | |
1495 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
1496 if (callback != NULL) { | |
1497 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1498 jem.jni_methodID(), jem.location(), | |
1499 jem.exception()); | |
1500 } | |
1501 } | |
1502 } | |
1503 } | |
1504 } | |
1505 } | |
1506 | |
1507 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
1508 klassOop klass, jfieldID fieldID, bool is_static) { | |
1509 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1510 // At least one field access watch is set so we have more work | |
1511 // to do. This wrapper is used by entry points that allow us | |
1512 // to create handles in post_field_access_by_jni(). | |
1513 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1514 // event posting can block so refetch oop if we were passed a jobj | |
1515 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1516 } | |
1517 return obj; | |
1518 } | |
1519 | |
1520 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
1521 klassOop klass, jfieldID fieldID, bool is_static) { | |
1522 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1523 // At least one field access watch is set so we have more work | |
1524 // to do. This wrapper is used by "quick" entry points that don't | |
1525 // allow us to create handles in post_field_access_by_jni(). We | |
1526 // override that with a ResetNoHandleMark. | |
1527 ResetNoHandleMark rnhm; | |
1528 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1529 // event posting can block so refetch oop if we were passed a jobj | |
1530 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1531 } | |
1532 return obj; | |
1533 } | |
1534 | |
1535 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
1536 klassOop klass, jfieldID fieldID, bool is_static) { | |
1537 // We must be called with a Java context in order to provide reasonable | |
1538 // values for the klazz, method, and location fields. The callers of this | |
1539 // function don't make the call unless there is a Java context. | |
1540 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
1541 | |
1542 ResourceMark rm; | |
1543 fieldDescriptor fd; | |
1544 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1545 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1546 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
1547 if (!valid_fieldID) return; | |
1548 // field accesses are not watched so bail | |
1549 if (!fd.is_field_access_watched()) return; | |
1550 | |
1551 HandleMark hm(thread); | |
1552 KlassHandle h_klass(thread, klass); | |
1553 Handle h_obj; | |
1554 if (!is_static) { | |
1555 // non-static field accessors have an object, but we need a handle | |
1556 assert(obj != NULL, "non-static needs an object"); | |
1557 h_obj = Handle(thread, obj); | |
1558 } | |
1559 post_field_access(thread, | |
1560 thread->last_frame().interpreter_frame_method(), | |
1561 thread->last_frame().interpreter_frame_bcp(), | |
1562 h_klass, h_obj, fieldID); | |
1563 } | |
1564 | |
1565 void JvmtiExport::post_field_access(JavaThread *thread, methodOop method, | |
1566 address location, KlassHandle field_klass, Handle object, jfieldID field) { | |
1567 | |
1568 HandleMark hm(thread); | |
1569 methodHandle mh(thread, method); | |
1570 | |
1571 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1572 if (state == NULL) { | |
1573 return; | |
1574 } | |
1575 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
1576 JvmtiTrace::safe_get_thread_name(thread))); | |
1577 JvmtiEnvThreadStateIterator it(state); | |
1578 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1579 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
1580 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
1581 JvmtiTrace::safe_get_thread_name(thread), | |
1582 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1583 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1584 location - mh()->code_base() )); | |
1585 | |
1586 JvmtiEnv *env = ets->get_env(); | |
1587 JvmtiLocationEventMark jem(thread, mh, location); | |
1588 jclass field_jclass = jem.to_jclass(field_klass()); | |
1589 jobject field_jobject = jem.to_jobject(object()); | |
1590 JvmtiJavaThreadEventTransition jet(thread); | |
1591 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
1592 if (callback != NULL) { | |
1593 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1594 jem.jni_methodID(), jem.location(), | |
1595 field_jclass, field_jobject, field); | |
1596 } | |
1597 } | |
1598 } | |
1599 } | |
1600 | |
1601 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
1602 klassOop klass, jfieldID fieldID, bool is_static, | |
1603 char sig_type, jvalue *value) { | |
1604 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1605 // At least one field modification watch is set so we have more work | |
1606 // to do. This wrapper is used by entry points that allow us | |
1607 // to create handles in post_field_modification_by_jni(). | |
1608 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1609 // event posting can block so refetch oop if we were passed a jobj | |
1610 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1611 } | |
1612 return obj; | |
1613 } | |
1614 | |
1615 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
1616 klassOop klass, jfieldID fieldID, bool is_static, | |
1617 char sig_type, jvalue *value) { | |
1618 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1619 // At least one field modification watch is set so we have more work | |
1620 // to do. This wrapper is used by "quick" entry points that don't | |
1621 // allow us to create handles in post_field_modification_by_jni(). We | |
1622 // override that with a ResetNoHandleMark. | |
1623 ResetNoHandleMark rnhm; | |
1624 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1625 // event posting can block so refetch oop if we were passed a jobj | |
1626 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1627 } | |
1628 return obj; | |
1629 } | |
1630 | |
1631 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
1632 klassOop klass, jfieldID fieldID, bool is_static, | |
1633 char sig_type, jvalue *value) { | |
1634 // We must be called with a Java context in order to provide reasonable | |
1635 // values for the klazz, method, and location fields. The callers of this | |
1636 // function don't make the call unless there is a Java context. | |
1637 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
1638 | |
1639 ResourceMark rm; | |
1640 fieldDescriptor fd; | |
1641 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1642 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1643 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
1644 if (!valid_fieldID) return; | |
1645 // field modifications are not watched so bail | |
1646 if (!fd.is_field_modification_watched()) return; | |
1647 | |
1648 HandleMark hm(thread); | |
1649 | |
1650 Handle h_obj; | |
1651 if (!is_static) { | |
1652 // non-static field accessors have an object, but we need a handle | |
1653 assert(obj != NULL, "non-static needs an object"); | |
1654 h_obj = Handle(thread, obj); | |
1655 } | |
1656 KlassHandle h_klass(thread, klass); | |
1657 post_field_modification(thread, | |
1658 thread->last_frame().interpreter_frame_method(), | |
1659 thread->last_frame().interpreter_frame_bcp(), | |
1660 h_klass, h_obj, fieldID, sig_type, value); | |
1661 } | |
1662 | |
1663 void JvmtiExport::post_raw_field_modification(JavaThread *thread, methodOop method, | |
1664 address location, KlassHandle field_klass, Handle object, jfieldID field, | |
1665 char sig_type, jvalue *value) { | |
1666 | |
1667 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'C' || sig_type == 'S') { | |
1668 // 'I' instructions are used for byte, char, short and int. | |
1669 // determine which it really is, and convert | |
1670 fieldDescriptor fd; | |
1671 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
1672 // should be found (if not, leave as is) | |
1673 if (found) { | |
1674 jint ival = value->i; | |
1675 // convert value from int to appropriate type | |
1676 switch (fd.field_type()) { | |
1677 case T_BOOLEAN: | |
1678 sig_type = 'Z'; | |
1679 value->i = 0; // clear it | |
1680 value->z = (jboolean)ival; | |
1681 break; | |
1682 case T_BYTE: | |
1683 sig_type = 'B'; | |
1684 value->i = 0; // clear it | |
1685 value->b = (jbyte)ival; | |
1686 break; | |
1687 case T_CHAR: | |
1688 sig_type = 'C'; | |
1689 value->i = 0; // clear it | |
1690 value->c = (jchar)ival; | |
1691 break; | |
1692 case T_SHORT: | |
1693 sig_type = 'S'; | |
1694 value->i = 0; // clear it | |
1695 value->s = (jshort)ival; | |
1696 break; | |
1697 case T_INT: | |
1698 // nothing to do | |
1699 break; | |
1700 default: | |
1701 // this is an integer instruction, should be one of above | |
1702 ShouldNotReachHere(); | |
1703 break; | |
1704 } | |
1705 } | |
1706 } | |
1707 | |
1708 // convert oop to JNI handle. | |
1709 if (sig_type == 'L' || sig_type == '[') { | |
1710 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); | |
1711 } | |
1712 | |
1713 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
1714 | |
1715 // Destroy the JNI handle allocated above. | |
1716 if (sig_type == 'L') { | |
1717 JNIHandles::destroy_local(value->l); | |
1718 } | |
1719 } | |
1720 | |
1721 void JvmtiExport::post_field_modification(JavaThread *thread, methodOop method, | |
1722 address location, KlassHandle field_klass, Handle object, jfieldID field, | |
1723 char sig_type, jvalue *value_ptr) { | |
1724 | |
1725 HandleMark hm(thread); | |
1726 methodHandle mh(thread, method); | |
1727 | |
1728 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1729 if (state == NULL) { | |
1730 return; | |
1731 } | |
1732 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1733 ("JVMTI [%s] Trg Field Modification event triggered", | |
1734 JvmtiTrace::safe_get_thread_name(thread))); | |
1735 | |
1736 JvmtiEnvThreadStateIterator it(state); | |
1737 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1738 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
1739 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1740 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
1741 JvmtiTrace::safe_get_thread_name(thread), | |
1742 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1743 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1744 location - mh()->code_base() )); | |
1745 | |
1746 JvmtiEnv *env = ets->get_env(); | |
1747 JvmtiLocationEventMark jem(thread, mh, location); | |
1748 jclass field_jclass = jem.to_jclass(field_klass()); | |
1749 jobject field_jobject = jem.to_jobject(object()); | |
1750 JvmtiJavaThreadEventTransition jet(thread); | |
1751 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
1752 if (callback != NULL) { | |
1753 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1754 jem.jni_methodID(), jem.location(), | |
1755 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
1756 } | |
1757 } | |
1758 } | |
1759 } | |
1760 | |
1761 void JvmtiExport::post_native_method_bind(methodOop method, address* function_ptr) { | |
1762 JavaThread* thread = JavaThread::current(); | |
1763 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1764 | |
1765 HandleMark hm(thread); | |
1766 methodHandle mh(thread, method); | |
1767 | |
1768 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
1769 JvmtiTrace::safe_get_thread_name(thread))); | |
1770 | |
1771 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1772 JvmtiEnvIterator it; | |
1773 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1774 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1775 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
1776 JvmtiTrace::safe_get_thread_name(thread) )); | |
1777 | |
1778 JvmtiMethodEventMark jem(thread, mh); | |
1779 JvmtiJavaThreadEventTransition jet(thread); | |
1780 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
1781 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
1782 if (callback != NULL) { | |
1783 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
1784 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
1785 } | |
1786 } | |
1787 } | |
1788 } | |
1789 } | |
1790 | |
1184
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1791 // Returns a record containing inlining information for the given nmethod |
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1792 jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
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1793 jint numstackframes = 0; |
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1794 jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
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1795 record->header.kind = JVMTI_CMLR_INLINE_INFO; |
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1796 record->header.next = NULL; |
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1797 record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
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1798 record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
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1799 record->numpcs = 0; |
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1800 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1801 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1802 record->numpcs++; |
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1803 } |
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1804 record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
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1805 int scope = 0; |
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1806 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1807 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1808 void* pc_address = (void*)p->real_pc(nm); |
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1809 assert(pc_address != NULL, "pc_address must be non-null"); |
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1810 record->pcinfo[scope].pc = pc_address; |
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1811 numstackframes=0; |
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1812 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1813 numstackframes++; |
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1814 } |
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1815 assert(numstackframes != 0, "numstackframes must be nonzero."); |
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1816 record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
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1817 record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
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1818 record->pcinfo[scope].numstackframes = numstackframes; |
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1819 int stackframe = 0; |
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1820 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1821 // 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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1822 assert(!sd->method().is_null(), "sd->method() cannot be null."); |
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1823 record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
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1824 record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
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1825 stackframe++; |
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1826 } |
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1827 scope++; |
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1828 } |
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1829 return record; |
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1830 } |
0 | 1831 |
1832 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
1833 // If there are pending CompiledMethodUnload events then these are | |
1834 // posted before this CompiledMethodLoad event. We "lock" the nmethod and | |
1835 // maintain a handle to the methodOop to ensure that the nmethod isn't | |
1836 // flushed or unloaded while posting the events. | |
1837 JavaThread* thread = JavaThread::current(); | |
1838 if (have_pending_compiled_method_unload_events()) { | |
1839 methodHandle mh(thread, nm->method()); | |
1840 nmethodLocker nml(nm); | |
1841 post_pending_compiled_method_unload_events(); | |
1842 } | |
1843 | |
1844 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1845 ("JVMTI [%s] method compile load event triggered", | |
1846 JvmtiTrace::safe_get_thread_name(thread))); | |
1847 | |
1848 JvmtiEnvIterator it; | |
1849 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1850 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1851 | |
1852 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1853 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
1854 JvmtiTrace::safe_get_thread_name(thread), | |
1855 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
1856 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
1857 | |
1858 ResourceMark rm(thread); | |
1184
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1859 |
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1860 // Add inlining information |
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1861 jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
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1862 // Pass inlining information through the void pointer |
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1863 JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
0 | 1864 JvmtiJavaThreadEventTransition jet(thread); |
1865 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1866 if (callback != NULL) { | |
1867 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
1868 jem.code_size(), jem.code_data(), jem.map_length(), | |
1869 jem.map(), jem.compile_info()); | |
1870 } | |
1871 } | |
1872 } | |
1873 } | |
1874 | |
1875 | |
1876 // post a COMPILED_METHOD_LOAD event for a given environment | |
1877 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
1878 const void *code_begin, const jint map_length, | |
1879 const jvmtiAddrLocationMap* map) | |
1880 { | |
1881 JavaThread* thread = JavaThread::current(); | |
1882 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1883 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
1884 JvmtiTrace::safe_get_thread_name(thread))); | |
1885 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1886 | |
1887 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1888 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
1889 JvmtiTrace::safe_get_thread_name(thread), method)); | |
1890 | |
1891 JvmtiEventMark jem(thread); | |
1892 JvmtiJavaThreadEventTransition jet(thread); | |
1893 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1894 if (callback != NULL) { | |
1895 (*callback)(env->jvmti_external(), method, | |
1896 length, code_begin, map_length, | |
1897 map, NULL); | |
1898 } | |
1899 } | |
1900 } | |
1901 | |
1902 // used at a safepoint to post a CompiledMethodUnload event | |
1577
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1903 void JvmtiExport::post_compiled_method_unload(jmethodID mid, const void *code_begin) { |
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1904 if (SafepointSynchronize::is_at_safepoint()) { |
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1905 // Class unloading can cause nmethod unloading which is reported |
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1906 // by the VMThread. These must be batched to be processed later. |
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1907 if (_pending_compiled_method_unload_method_ids == NULL) { |
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1908 // create list lazily |
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1909 _pending_compiled_method_unload_method_ids = new (ResourceObj::C_HEAP) GrowableArray<jmethodID>(10,true); |
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1910 _pending_compiled_method_unload_code_begins = new (ResourceObj::C_HEAP) GrowableArray<const void *>(10,true); |
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1911 } |
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1912 _pending_compiled_method_unload_method_ids->append(mid); |
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1913 _pending_compiled_method_unload_code_begins->append(code_begin); |
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1914 _have_pending_compiled_method_unload_events = true; |
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1915 } else { |
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1916 // Unloading caused by the sweeper can be reported synchronously. |
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1917 if (have_pending_compiled_method_unload_events()) { |
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1918 post_pending_compiled_method_unload_events(); |
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1919 } |
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1920 post_compiled_method_unload_internal(JavaThread::current(), mid, code_begin); |
0 | 1921 } |
1922 } | |
1923 | |
1924 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
1925 JavaThread* thread = JavaThread::current(); | |
1926 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1927 ("JVMTI [%s] method dynamic code generated event triggered", | |
1928 JvmtiTrace::safe_get_thread_name(thread))); | |
1929 JvmtiEnvIterator it; | |
1930 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1931 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1932 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1933 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1934 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1935 JvmtiEventMark jem(thread); | |
1936 JvmtiJavaThreadEventTransition jet(thread); | |
1937 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1938 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1939 if (callback != NULL) { | |
1940 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1941 } | |
1942 } | |
1943 } | |
1944 } | |
1945 | |
1946 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
1947 // In theory everyone coming thru here is in_vm but we need to be certain | |
1948 // because a callee will do a vm->native transition | |
1949 ThreadInVMfromUnknown __tiv; | |
1950 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
1951 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
1952 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
1953 return; | |
1954 } | |
1955 | |
1956 if (have_pending_compiled_method_unload_events()) { | |
1957 post_pending_compiled_method_unload_events(); | |
1958 } | |
1959 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
1960 } | |
1961 | |
1962 | |
1963 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
1964 // used by GenerateEvents | |
1965 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
1966 const void *code_begin, const void *code_end) | |
1967 { | |
1968 JavaThread* thread = JavaThread::current(); | |
1969 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1970 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
1971 JvmtiTrace::safe_get_thread_name(thread))); | |
1972 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1973 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1974 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1975 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1976 JvmtiEventMark jem(thread); | |
1977 JvmtiJavaThreadEventTransition jet(thread); | |
1978 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1979 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1980 if (callback != NULL) { | |
1981 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1982 } | |
1983 } | |
1984 } | |
1985 | |
1986 // post a DynamicCodeGenerated event while holding locks in the VM. | |
1987 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
1988 address code_begin, address code_end) | |
1989 { | |
1990 // register the stub with the current dynamic code event collector | |
1991 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
609
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1992 // state can only be NULL if the current thread is exiting which |
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1993 // should not happen since we're trying to post an event |
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1994 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
0 | 1995 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
1996 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
1997 collector->register_stub(name, code_begin, code_end); | |
1998 } | |
1999 | |
2000 // Collect all the vm internally allocated objects which are visible to java world | |
2001 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
2002 Thread* thread = ThreadLocalStorage::thread(); | |
2003 if (thread != NULL && thread->is_Java_thread()) { | |
2004 // Can not take safepoint here. | |
2005 No_Safepoint_Verifier no_sfpt; | |
2006 // Can not take safepoint here so can not use state_for to get | |
2007 // jvmti thread state. | |
2008 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
2009 if (state != NULL ) { | |
2010 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
2011 JvmtiVMObjectAllocEventCollector *collector; | |
2012 collector = state->get_vm_object_alloc_event_collector(); | |
2013 if (collector != NULL && collector->is_enabled()) { | |
2014 // Don't record classes as these will be notified via the ClassLoad | |
2015 // event. | |
1142 | 2016 if (obj->klass() != SystemDictionary::Class_klass()) { |
0 | 2017 collector->record_allocation(obj); |
2018 } | |
2019 } | |
2020 } | |
2021 } | |
2022 } | |
2023 | |
2024 void JvmtiExport::post_garbage_collection_finish() { | |
2025 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
2026 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
2027 ("JVMTI [%s] garbage collection finish event triggered", | |
2028 JvmtiTrace::safe_get_thread_name(thread))); | |
2029 JvmtiEnvIterator it; | |
2030 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2031 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { | |
2032 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
2033 ("JVMTI [%s] garbage collection finish event sent ", | |
2034 JvmtiTrace::safe_get_thread_name(thread))); | |
2035 JvmtiThreadEventTransition jet(thread); | |
2036 // JNIEnv is NULL here because this event is posted from VM Thread | |
2037 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
2038 if (callback != NULL) { | |
2039 (*callback)(env->jvmti_external()); | |
2040 } | |
2041 } | |
2042 } | |
2043 } | |
2044 | |
2045 void JvmtiExport::post_garbage_collection_start() { | |
2046 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
2047 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
2048 ("JVMTI [%s] garbage collection start event triggered", | |
2049 JvmtiTrace::safe_get_thread_name(thread))); | |
2050 JvmtiEnvIterator it; | |
2051 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2052 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
2053 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
2054 ("JVMTI [%s] garbage collection start event sent ", | |
2055 JvmtiTrace::safe_get_thread_name(thread))); | |
2056 JvmtiThreadEventTransition jet(thread); | |
2057 // JNIEnv is NULL here because this event is posted from VM Thread | |
2058 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
2059 if (callback != NULL) { | |
2060 (*callback)(env->jvmti_external()); | |
2061 } | |
2062 } | |
2063 } | |
2064 } | |
2065 | |
2066 void JvmtiExport::post_data_dump() { | |
2067 Thread *thread = Thread::current(); | |
2068 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
2069 ("JVMTI [%s] data dump request event triggered", | |
2070 JvmtiTrace::safe_get_thread_name(thread))); | |
2071 JvmtiEnvIterator it; | |
2072 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2073 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
2074 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
2075 ("JVMTI [%s] data dump request event sent ", | |
2076 JvmtiTrace::safe_get_thread_name(thread))); | |
2077 JvmtiThreadEventTransition jet(thread); | |
2078 // JNIEnv is NULL here because this event is posted from VM Thread | |
2079 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
2080 if (callback != NULL) { | |
2081 (*callback)(env->jvmti_external()); | |
2082 } | |
2083 } | |
2084 } | |
2085 } | |
2086 | |
2087 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
2088 oop object = (oop)obj_mntr->object(); | |
2089 if (!ServiceUtil::visible_oop(object)) { | |
2090 // Ignore monitor contended enter for vm internal object. | |
2091 return; | |
2092 } | |
2093 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2094 if (state == NULL) { | |
2095 return; | |
2096 } | |
2097 | |
2098 HandleMark hm(thread); | |
2099 Handle h(thread, object); | |
2100 | |
2101 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2102 ("JVMTI [%s] montior contended enter event triggered", | |
2103 JvmtiTrace::safe_get_thread_name(thread))); | |
2104 | |
2105 JvmtiEnvThreadStateIterator it(state); | |
2106 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2107 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
2108 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2109 ("JVMTI [%s] monitor contended enter event sent", | |
2110 JvmtiTrace::safe_get_thread_name(thread))); | |
2111 JvmtiMonitorEventMark jem(thread, h()); | |
2112 JvmtiEnv *env = ets->get_env(); | |
2113 JvmtiThreadEventTransition jet(thread); | |
2114 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
2115 if (callback != NULL) { | |
2116 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2117 } | |
2118 } | |
2119 } | |
2120 } | |
2121 | |
2122 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
2123 oop object = (oop)obj_mntr->object(); | |
2124 if (!ServiceUtil::visible_oop(object)) { | |
2125 // Ignore monitor contended entered for vm internal object. | |
2126 return; | |
2127 } | |
2128 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2129 if (state == NULL) { | |
2130 return; | |
2131 } | |
2132 | |
2133 HandleMark hm(thread); | |
2134 Handle h(thread, object); | |
2135 | |
2136 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2137 ("JVMTI [%s] montior contended entered event triggered", | |
2138 JvmtiTrace::safe_get_thread_name(thread))); | |
2139 | |
2140 JvmtiEnvThreadStateIterator it(state); | |
2141 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2142 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
2143 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2144 ("JVMTI [%s] monitor contended enter event sent", | |
2145 JvmtiTrace::safe_get_thread_name(thread))); | |
2146 JvmtiMonitorEventMark jem(thread, h()); | |
2147 JvmtiEnv *env = ets->get_env(); | |
2148 JvmtiThreadEventTransition jet(thread); | |
2149 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
2150 if (callback != NULL) { | |
2151 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2152 } | |
2153 } | |
2154 } | |
2155 } | |
2156 | |
2157 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
2158 jlong timeout) { | |
2159 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2160 if (state == NULL) { | |
2161 return; | |
2162 } | |
2163 | |
2164 HandleMark hm(thread); | |
2165 Handle h(thread, object); | |
2166 | |
2167 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2168 ("JVMTI [%s] montior wait event triggered", | |
2169 JvmtiTrace::safe_get_thread_name(thread))); | |
2170 | |
2171 JvmtiEnvThreadStateIterator it(state); | |
2172 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2173 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
2174 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2175 ("JVMTI [%s] monitor wait event sent ", | |
2176 JvmtiTrace::safe_get_thread_name(thread))); | |
2177 JvmtiMonitorEventMark jem(thread, h()); | |
2178 JvmtiEnv *env = ets->get_env(); | |
2179 JvmtiThreadEventTransition jet(thread); | |
2180 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
2181 if (callback != NULL) { | |
2182 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2183 jem.jni_object(), timeout); | |
2184 } | |
2185 } | |
2186 } | |
2187 } | |
2188 | |
2189 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
2190 oop object = (oop)obj_mntr->object(); | |
2191 if (!ServiceUtil::visible_oop(object)) { | |
2192 // Ignore monitor waited for vm internal object. | |
2193 return; | |
2194 } | |
2195 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2196 if (state == NULL) { | |
2197 return; | |
2198 } | |
2199 | |
2200 HandleMark hm(thread); | |
2201 Handle h(thread, object); | |
2202 | |
2203 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2204 ("JVMTI [%s] montior waited event triggered", | |
2205 JvmtiTrace::safe_get_thread_name(thread))); | |
2206 | |
2207 JvmtiEnvThreadStateIterator it(state); | |
2208 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2209 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
2210 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2211 ("JVMTI [%s] monitor waited event sent ", | |
2212 JvmtiTrace::safe_get_thread_name(thread))); | |
2213 JvmtiMonitorEventMark jem(thread, h()); | |
2214 JvmtiEnv *env = ets->get_env(); | |
2215 JvmtiThreadEventTransition jet(thread); | |
2216 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
2217 if (callback != NULL) { | |
2218 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2219 jem.jni_object(), timed_out); | |
2220 } | |
2221 } | |
2222 } | |
2223 } | |
2224 | |
2225 | |
2226 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
2227 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
2228 JvmtiTrace::safe_get_thread_name(thread))); | |
2229 if (object == NULL) { | |
2230 return; | |
2231 } | |
2232 HandleMark hm(thread); | |
2233 Handle h(thread, object); | |
2234 JvmtiEnvIterator it; | |
2235 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2236 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
2237 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
2238 JvmtiTrace::safe_get_thread_name(thread), | |
2239 object==NULL? "NULL" : Klass::cast(java_lang_Class::as_klassOop(object))->external_name())); | |
2240 | |
2241 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
2242 JvmtiJavaThreadEventTransition jet(thread); | |
2243 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
2244 if (callback != NULL) { | |
2245 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2246 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
2247 } | |
2248 } | |
2249 } | |
2250 } | |
2251 | |
2252 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2253 | |
2254 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
2255 assert(JavaThread::current() == thread, "thread is not current"); | |
2256 | |
2257 | |
2258 // This has to happen after the thread state is removed, which is | |
2259 // why it is not in post_thread_end_event like its complement | |
2260 // Maybe both these functions should be rolled into the posts? | |
2261 JvmtiEventController::thread_ended(thread); | |
2262 } | |
2263 | |
2264 void JvmtiExport::oops_do(OopClosure* f) { | |
2265 JvmtiCurrentBreakpoints::oops_do(f); | |
2266 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
2267 } | |
2268 | |
2269 // Onload raw monitor transition. | |
2270 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
2271 JvmtiPendingMonitors::transition_raw_monitors(); | |
2272 } | |
2273 | |
2274 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2275 | |
2276 // type for the Agent_OnAttach entry point | |
2277 extern "C" { | |
2278 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
2279 } | |
2280 | |
2281 #ifndef SERVICES_KERNEL | |
2282 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
2283 char ebuf[1024]; | |
2284 char buffer[JVM_MAXPATHLEN]; | |
2285 void* library; | |
2286 jint result = JNI_ERR; | |
2287 | |
2288 // get agent name and options | |
2289 const char* agent = op->arg(0); | |
2290 const char* absParam = op->arg(1); | |
2291 const char* options = op->arg(2); | |
2292 | |
2293 // The abs paramter should be "true" or "false" | |
2294 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
2295 | |
2296 | |
2297 // If the path is absolute we attempt to load the library. Otherwise we try to | |
2298 // load it from the standard dll directory. | |
2299 | |
2300 if (is_absolute_path) { | |
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diff
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2301 library = os::dll_load(agent, ebuf, sizeof ebuf); |
0 | 2302 } else { |
2303 // Try to load the agent from the standard dll directory | |
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2304 os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), agent); |
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2305 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
0 | 2306 if (library == NULL) { |
2307 // not found - try local path | |
2308 char ns[1] = {0}; | |
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diff
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2309 os::dll_build_name(buffer, sizeof(buffer), ns, agent); |
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diff
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2310 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
0 | 2311 } |
2312 } | |
2313 | |
2314 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
2315 // function | |
2316 if (library != NULL) { | |
2317 | |
2318 // Lookup the Agent_OnAttach function | |
2319 OnAttachEntry_t on_attach_entry = NULL; | |
2320 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; | |
2321 for (uint symbol_index = 0; symbol_index < ARRAY_SIZE(on_attach_symbols); symbol_index++) { | |
2322 on_attach_entry = | |
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|
2323 CAST_TO_FN_PTR(OnAttachEntry_t, os::dll_lookup(library, on_attach_symbols[symbol_index])); |
0 | 2324 if (on_attach_entry != NULL) break; |
2325 } | |
2326 | |
2327 if (on_attach_entry == NULL) { | |
2328 // Agent_OnAttach missing - unload library | |
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2329 os::dll_unload(library); |
0 | 2330 } else { |
2331 // Invoke the Agent_OnAttach function | |
2332 JavaThread* THREAD = JavaThread::current(); | |
2333 { | |
2334 extern struct JavaVM_ main_vm; | |
2335 JvmtiThreadEventMark jem(THREAD); | |
2336 JvmtiJavaThreadEventTransition jet(THREAD); | |
2337 | |
2338 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
2339 } | |
2340 | |
2341 // Agent_OnAttach may have used JNI | |
2342 if (HAS_PENDING_EXCEPTION) { | |
2343 CLEAR_PENDING_EXCEPTION; | |
2344 } | |
2345 | |
2346 // If OnAttach returns JNI_OK then we add it to the list of | |
2347 // agent libraries so that we can call Agent_OnUnload later. | |
2348 if (result == JNI_OK) { | |
2349 Arguments::add_loaded_agent(agent, (char*)options, is_absolute_path, library); | |
2350 } | |
2351 | |
2352 // Agent_OnAttach executed so completion status is JNI_OK | |
2353 st->print_cr("%d", result); | |
2354 result = JNI_OK; | |
2355 } | |
2356 } | |
2357 return result; | |
2358 } | |
2359 #endif // SERVICES_KERNEL | |
2360 | |
2361 // CMS has completed referencing processing so may need to update | |
2362 // tag maps. | |
2363 void JvmtiExport::cms_ref_processing_epilogue() { | |
2364 if (JvmtiEnv::environments_might_exist()) { | |
2365 JvmtiTagMap::cms_ref_processing_epilogue(); | |
2366 } | |
2367 } | |
2368 | |
2369 | |
2370 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2371 | |
2372 // Setup current current thread for event collection. | |
2373 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
2374 // set this event collector to be the current one. | |
2375 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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2376 // state can only be NULL if the current thread is exiting which |
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2377 // should not happen since we're trying to configure for event collection |
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2378 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
0 | 2379 if (is_vm_object_alloc_event()) { |
2380 _prev = state->get_vm_object_alloc_event_collector(); | |
2381 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
2382 } else if (is_dynamic_code_event()) { | |
2383 _prev = state->get_dynamic_code_event_collector(); | |
2384 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
2385 } | |
2386 } | |
2387 | |
2388 // Unset current event collection in this thread and reset it with previous | |
2389 // collector. | |
2390 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
2391 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
2392 if (state != NULL) { | |
2393 // restore the previous event collector (if any) | |
2394 if (is_vm_object_alloc_event()) { | |
2395 if (state->get_vm_object_alloc_event_collector() == this) { | |
2396 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
2397 } else { | |
2398 // this thread's jvmti state was created during the scope of | |
2399 // the event collector. | |
2400 } | |
2401 } else { | |
2402 if (is_dynamic_code_event()) { | |
2403 if (state->get_dynamic_code_event_collector() == this) { | |
2404 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
2405 } else { | |
2406 // this thread's jvmti state was created during the scope of | |
2407 // the event collector. | |
2408 } | |
2409 } | |
2410 } | |
2411 } | |
2412 } | |
2413 | |
2414 // create the dynamic code event collector | |
2415 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
2416 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
2417 setup_jvmti_thread_state(); | |
2418 } | |
2419 } | |
2420 | |
2421 // iterate over any code blob descriptors collected and post a | |
2422 // DYNAMIC_CODE_GENERATED event to the profiler. | |
2423 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
2424 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
2425 // iterate over any code blob descriptors that we collected | |
2426 if (_code_blobs != NULL) { | |
2427 for (int i=0; i<_code_blobs->length(); i++) { | |
2428 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
2429 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
2430 FreeHeap(blob); | |
2431 } | |
2432 delete _code_blobs; | |
2433 } | |
2434 unset_jvmti_thread_state(); | |
2435 } | |
2436 | |
2437 // register a stub | |
2438 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
2439 if (_code_blobs == NULL) { | |
2440 _code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(1,true); | |
2441 } | |
2442 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
2443 } | |
2444 | |
2445 // Setup current thread to record vm allocated objects. | |
2446 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
2447 if (JvmtiExport::should_post_vm_object_alloc()) { | |
2448 _enable = true; | |
2449 setup_jvmti_thread_state(); | |
2450 } else { | |
2451 _enable = false; | |
2452 } | |
2453 } | |
2454 | |
2455 // Post vm_object_alloc event for vm allocated objects visible to java | |
2456 // world. | |
2457 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
2458 if (_allocated != NULL) { | |
2459 set_enabled(false); | |
2460 for (int i = 0; i < _allocated->length(); i++) { | |
2461 oop obj = _allocated->at(i); | |
2462 if (ServiceUtil::visible_oop(obj)) { | |
2463 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
2464 } | |
2465 } | |
2466 delete _allocated; | |
2467 } | |
2468 unset_jvmti_thread_state(); | |
2469 } | |
2470 | |
2471 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
2472 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
2473 if (_allocated == NULL) { | |
2474 _allocated = new (ResourceObj::C_HEAP) GrowableArray<oop>(1, true); | |
2475 } | |
2476 _allocated->push(obj); | |
2477 } | |
2478 | |
2479 // GC support. | |
2480 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
2481 if (_allocated != NULL) { | |
2482 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
2483 if (_allocated->at(i) != NULL) { | |
2484 f->do_oop(_allocated->adr_at(i)); | |
2485 } | |
2486 } | |
2487 } | |
2488 } | |
2489 | |
2490 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
2491 // no-op if jvmti not enabled | |
2492 if (!JvmtiEnv::environments_might_exist()) { | |
2493 return; | |
2494 } | |
2495 | |
2496 // Runs at safepoint. So no need to acquire Threads_lock. | |
2497 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
2498 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
2499 if (state != NULL) { | |
2500 JvmtiVMObjectAllocEventCollector *collector; | |
2501 collector = state->get_vm_object_alloc_event_collector(); | |
2502 while (collector != NULL) { | |
2503 collector->oops_do(f); | |
2504 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
2505 } | |
2506 } | |
2507 } | |
2508 } | |
2509 | |
2510 | |
2511 // Disable collection of VMObjectAlloc events | |
2512 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
2513 // a no-op if VMObjectAlloc event is not enabled | |
2514 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
2515 return; | |
2516 } | |
2517 Thread* thread = ThreadLocalStorage::thread(); | |
2518 if (thread != NULL && thread->is_Java_thread()) { | |
2519 JavaThread* current_thread = (JavaThread*)thread; | |
2520 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
2521 if (state != NULL) { | |
2522 JvmtiVMObjectAllocEventCollector *collector; | |
2523 collector = state->get_vm_object_alloc_event_collector(); | |
2524 if (collector != NULL && collector->is_enabled()) { | |
2525 _collector = collector; | |
2526 _collector->set_enabled(false); | |
2527 } | |
2528 } | |
2529 } | |
2530 } | |
2531 | |
2532 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
2533 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
2534 if (was_enabled()) { | |
2535 _collector->set_enabled(true); | |
2536 } | |
2537 }; | |
2538 | |
2539 JvmtiGCMarker::JvmtiGCMarker(bool full) : _full(full), _invocation_count(0) { | |
2540 assert(Thread::current()->is_VM_thread(), "wrong thread"); | |
2541 | |
2542 // if there aren't any JVMTI environments then nothing to do | |
2543 if (!JvmtiEnv::environments_might_exist()) { | |
2544 return; | |
2545 } | |
2546 | |
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|
2547 if (ForceFullGCJVMTIEpilogues) { |
2b4230d1e589
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342
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changeset
|
2548 // force 'Full GC' was done semantics for JVMTI GC epilogues |
2b4230d1e589
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dcubed
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|
2549 _full = true; |
2b4230d1e589
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changeset
|
2550 } |
2b4230d1e589
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|
2551 |
0 | 2552 // GarbageCollectionStart event posted from VM thread - okay because |
2553 // JVMTI is clear that the "world is stopped" and callback shouldn't | |
2554 // try to call into the VM. | |
2555 if (JvmtiExport::should_post_garbage_collection_start()) { | |
2556 JvmtiExport::post_garbage_collection_start(); | |
2557 } | |
2558 | |
2559 // if "full" is false it probably means this is a scavenge of the young | |
2560 // generation. However it could turn out that a "full" GC is required | |
2561 // so we record the number of collections so that it can be checked in | |
2562 // the destructor. | |
2563 if (!_full) { | |
342 | 2564 _invocation_count = Universe::heap()->total_full_collections(); |
0 | 2565 } |
2566 | |
2567 // Do clean up tasks that need to be done at a safepoint | |
2568 JvmtiEnvBase::check_for_periodic_clean_up(); | |
2569 } | |
2570 | |
2571 JvmtiGCMarker::~JvmtiGCMarker() { | |
2572 // if there aren't any JVMTI environments then nothing to do | |
2573 if (!JvmtiEnv::environments_might_exist()) { | |
2574 return; | |
2575 } | |
2576 | |
2577 // JVMTI notify gc finish | |
2578 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
2579 JvmtiExport::post_garbage_collection_finish(); | |
2580 } | |
2581 | |
2582 // we might have initially started out doing a scavenge of the young | |
2583 // generation but could have ended up doing a "full" GC - check the | |
2584 // GC count to see. | |
2585 if (!_full) { | |
342 | 2586 _full = (_invocation_count != Universe::heap()->total_full_collections()); |
0 | 2587 } |
2588 | |
2589 // Full collection probably means the perm generation has been GC'ed | |
2590 // so we clear the breakpoint cache. | |
2591 if (_full) { | |
2592 JvmtiCurrentBreakpoints::gc_epilogue(); | |
2593 } | |
2594 | |
2595 // Notify heap/object tagging support | |
2596 JvmtiTagMap::gc_epilogue(_full); | |
2597 } | |
2598 #endif // JVMTI_KERNEL |