Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiExport.cpp @ 21183:565d7dbae77c
LIRGenerator: replace doBlockStart/doBlockEnd with an AutoCloseable.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 20 Apr 2015 11:16:15 +0200 |
parents | 7848fc12602b |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "code/nmethod.hpp" | |
28 #include "code/pcDesc.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "interpreter/interpreter.hpp" | |
31 #include "jvmtifiles/jvmtiEnv.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/objArrayOop.hpp" | |
35 #include "prims/jvmtiCodeBlobEvents.hpp" | |
36 #include "prims/jvmtiEventController.hpp" | |
37 #include "prims/jvmtiEventController.inline.hpp" | |
38 #include "prims/jvmtiExport.hpp" | |
39 #include "prims/jvmtiImpl.hpp" | |
40 #include "prims/jvmtiManageCapabilities.hpp" | |
41 #include "prims/jvmtiRawMonitor.hpp" | |
42 #include "prims/jvmtiTagMap.hpp" | |
43 #include "prims/jvmtiThreadState.inline.hpp" | |
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44 #include "prims/jvmtiRedefineClasses.hpp" |
1972 | 45 #include "runtime/arguments.hpp" |
46 #include "runtime/handles.hpp" | |
47 #include "runtime/interfaceSupport.hpp" | |
48 #include "runtime/objectMonitor.hpp" | |
49 #include "runtime/objectMonitor.inline.hpp" | |
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50 #include "runtime/thread.inline.hpp" |
1972 | 51 #include "runtime/vframe.hpp" |
52 #include "services/attachListener.hpp" | |
53 #include "services/serviceUtil.hpp" | |
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54 #include "utilities/macros.hpp" |
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55 #if INCLUDE_ALL_GCS |
1972 | 56 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" |
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57 #endif // INCLUDE_ALL_GCS |
0 | 58 |
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59 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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60 |
0 | 61 #ifdef JVMTI_TRACE |
62 #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
63 #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
64 #else | |
65 #define EVT_TRIG_TRACE(evt,out) | |
66 #define EVT_TRACE(evt,out) | |
67 #endif | |
68 | |
69 /////////////////////////////////////////////////////////////// | |
70 // | |
71 // JvmtiEventTransition | |
72 // | |
73 // TO DO -- | |
74 // more handle purging | |
75 | |
76 // Use this for JavaThreads and state is _thread_in_vm. | |
77 class JvmtiJavaThreadEventTransition : StackObj { | |
78 private: | |
79 ResourceMark _rm; | |
80 ThreadToNativeFromVM _transition; | |
81 HandleMark _hm; | |
82 | |
83 public: | |
84 JvmtiJavaThreadEventTransition(JavaThread *thread) : | |
85 _rm(), | |
86 _transition(thread), | |
87 _hm(thread) {}; | |
88 }; | |
89 | |
90 // For JavaThreads which are not in _thread_in_vm state | |
91 // and other system threads use this. | |
92 class JvmtiThreadEventTransition : StackObj { | |
93 private: | |
94 ResourceMark _rm; | |
95 HandleMark _hm; | |
96 JavaThreadState _saved_state; | |
97 JavaThread *_jthread; | |
98 | |
99 public: | |
100 JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { | |
101 if (thread->is_Java_thread()) { | |
102 _jthread = (JavaThread *)thread; | |
103 _saved_state = _jthread->thread_state(); | |
104 if (_saved_state == _thread_in_Java) { | |
105 ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); | |
106 } else { | |
107 ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); | |
108 } | |
109 } else { | |
110 _jthread = NULL; | |
111 } | |
112 } | |
113 | |
114 ~JvmtiThreadEventTransition() { | |
115 if (_jthread != NULL) | |
116 ThreadStateTransition::transition_from_native(_jthread, _saved_state); | |
117 } | |
118 }; | |
119 | |
120 | |
121 /////////////////////////////////////////////////////////////// | |
122 // | |
123 // JvmtiEventMark | |
124 // | |
125 | |
126 class JvmtiEventMark : public StackObj { | |
127 private: | |
128 JavaThread *_thread; | |
129 JNIEnv* _jni_env; | |
130 bool _exception_detected; | |
131 bool _exception_caught; | |
132 #if 0 | |
133 JNIHandleBlock* _hblock; | |
134 #endif | |
135 | |
136 public: | |
137 JvmtiEventMark(JavaThread *thread) : _thread(thread), | |
138 _jni_env(thread->jni_environment()) { | |
139 #if 0 | |
140 _hblock = thread->active_handles(); | |
141 _hblock->clear_thoroughly(); // so we can be safe | |
142 #else | |
143 // we want to use the code above - but that needs the JNIHandle changes - later... | |
144 // for now, steal JNI push local frame code | |
145 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
146 // we are before an event. | |
147 // Save current jvmti thread exception state. | |
148 if (state != NULL) { | |
149 _exception_detected = state->is_exception_detected(); | |
150 _exception_caught = state->is_exception_caught(); | |
151 } else { | |
152 _exception_detected = false; | |
153 _exception_caught = false; | |
154 } | |
155 | |
156 JNIHandleBlock* old_handles = thread->active_handles(); | |
157 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
158 assert(new_handles != NULL, "should not be NULL"); | |
159 new_handles->set_pop_frame_link(old_handles); | |
160 thread->set_active_handles(new_handles); | |
161 #endif | |
162 assert(thread == JavaThread::current(), "thread must be current!"); | |
163 thread->frame_anchor()->make_walkable(thread); | |
164 }; | |
165 | |
166 ~JvmtiEventMark() { | |
167 #if 0 | |
168 _hblock->clear(); // for consistency with future correct behavior | |
169 #else | |
170 // we want to use the code above - but that needs the JNIHandle changes - later... | |
171 // for now, steal JNI pop local frame code | |
172 JNIHandleBlock* old_handles = _thread->active_handles(); | |
173 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); | |
174 assert(new_handles != NULL, "should not be NULL"); | |
175 _thread->set_active_handles(new_handles); | |
176 // Note that we set the pop_frame_link to NULL explicitly, otherwise | |
177 // the release_block call will release the blocks. | |
178 old_handles->set_pop_frame_link(NULL); | |
179 JNIHandleBlock::release_block(old_handles, _thread); // may block | |
180 #endif | |
181 | |
182 JvmtiThreadState* state = _thread->jvmti_thread_state(); | |
183 // we are continuing after an event. | |
184 if (state != NULL) { | |
185 // Restore the jvmti thread exception state. | |
186 if (_exception_detected) { | |
187 state->set_exception_detected(); | |
188 } | |
189 if (_exception_caught) { | |
190 state->set_exception_caught(); | |
191 } | |
192 } | |
193 } | |
194 | |
195 #if 0 | |
196 jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } | |
197 #else | |
198 // we want to use the code above - but that needs the JNIHandle changes - later... | |
199 // for now, use regular make_local | |
200 jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } | |
201 #endif | |
202 | |
6983 | 203 jclass to_jclass(Klass* klass) { return (klass == NULL ? NULL : (jclass)to_jobject(klass->java_mirror())); } |
0 | 204 |
205 jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } | |
206 | |
207 JNIEnv* jni_env() { return _jni_env; } | |
208 }; | |
209 | |
210 class JvmtiThreadEventMark : public JvmtiEventMark { | |
211 private: | |
212 jthread _jt; | |
213 | |
214 public: | |
215 JvmtiThreadEventMark(JavaThread *thread) : | |
216 JvmtiEventMark(thread) { | |
217 _jt = (jthread)(to_jobject(thread->threadObj())); | |
218 }; | |
219 jthread jni_thread() { return _jt; } | |
220 }; | |
221 | |
222 class JvmtiClassEventMark : public JvmtiThreadEventMark { | |
223 private: | |
224 jclass _jc; | |
225 | |
226 public: | |
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227 JvmtiClassEventMark(JavaThread *thread, Klass* klass) : |
0 | 228 JvmtiThreadEventMark(thread) { |
229 _jc = to_jclass(klass); | |
230 }; | |
231 jclass jni_class() { return _jc; } | |
232 }; | |
233 | |
234 class JvmtiMethodEventMark : public JvmtiThreadEventMark { | |
235 private: | |
236 jmethodID _mid; | |
237 | |
238 public: | |
239 JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : | |
240 JvmtiThreadEventMark(thread), | |
241 _mid(to_jmethodID(method)) {}; | |
242 jmethodID jni_methodID() { return _mid; } | |
243 }; | |
244 | |
245 class JvmtiLocationEventMark : public JvmtiMethodEventMark { | |
246 private: | |
247 jlocation _loc; | |
248 | |
249 public: | |
250 JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : | |
251 JvmtiMethodEventMark(thread, method), | |
252 _loc(location - method->code_base()) {}; | |
253 jlocation location() { return _loc; } | |
254 }; | |
255 | |
256 class JvmtiExceptionEventMark : public JvmtiLocationEventMark { | |
257 private: | |
258 jobject _exc; | |
259 | |
260 public: | |
261 JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : | |
262 JvmtiLocationEventMark(thread, method, location), | |
263 _exc(to_jobject(exception())) {}; | |
264 jobject exception() { return _exc; } | |
265 }; | |
266 | |
267 class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { | |
268 private: | |
269 const char *_class_name; | |
270 jobject _jloader; | |
271 jobject _protection_domain; | |
272 jclass _class_being_redefined; | |
273 | |
274 public: | |
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275 JvmtiClassFileLoadEventMark(JavaThread *thread, Symbol* name, |
0 | 276 Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { |
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277 _class_name = name != NULL? name->as_utf8() : NULL; |
0 | 278 _jloader = (jobject)to_jobject(class_loader()); |
279 _protection_domain = (jobject)to_jobject(prot_domain()); | |
280 if (class_being_redefined == NULL) { | |
281 _class_being_redefined = NULL; | |
282 } else { | |
283 _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); | |
284 } | |
285 }; | |
286 const char *class_name() { | |
287 return _class_name; | |
288 } | |
289 jobject jloader() { | |
290 return _jloader; | |
291 } | |
292 jobject protection_domain() { | |
293 return _protection_domain; | |
294 } | |
295 jclass class_being_redefined() { | |
296 return _class_being_redefined; | |
297 } | |
298 }; | |
299 | |
300 ////////////////////////////////////////////////////////////////////////////// | |
301 | |
302 int JvmtiExport::_field_access_count = 0; | |
303 int JvmtiExport::_field_modification_count = 0; | |
304 | |
305 bool JvmtiExport::_can_access_local_variables = false; | |
306 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
307 bool JvmtiExport::_can_modify_any_class = false; | |
308 bool JvmtiExport::_can_walk_any_space = false; | |
309 | |
310 bool JvmtiExport::_has_redefined_a_class = false; | |
311 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
312 | |
313 // | |
314 // field access management | |
315 // | |
316 | |
317 // interpreter generator needs the address of the counter | |
318 address JvmtiExport::get_field_access_count_addr() { | |
319 // We don't grab a lock because we don't want to | |
320 // serialize field access between all threads. This means that a | |
321 // thread on another processor can see the wrong count value and | |
322 // may either miss making a needed call into post_field_access() | |
323 // or will make an unneeded call into post_field_access(). We pay | |
324 // this price to avoid slowing down the VM when we aren't watching | |
325 // field accesses. | |
326 // Other access/mutation safe by virtue of being in VM state. | |
327 return (address)(&_field_access_count); | |
328 } | |
329 | |
330 // | |
331 // field modification management | |
332 // | |
333 | |
334 // interpreter generator needs the address of the counter | |
335 address JvmtiExport::get_field_modification_count_addr() { | |
336 // We don't grab a lock because we don't | |
337 // want to serialize field modification between all threads. This | |
338 // means that a thread on another processor can see the wrong | |
339 // count value and may either miss making a needed call into | |
340 // post_field_modification() or will make an unneeded call into | |
341 // post_field_modification(). We pay this price to avoid slowing | |
342 // down the VM when we aren't watching field modifications. | |
343 // Other access/mutation safe by virtue of being in VM state. | |
344 return (address)(&_field_modification_count); | |
345 } | |
346 | |
347 | |
348 /////////////////////////////////////////////////////////////// | |
349 // Functions needed by java.lang.instrument for starting up javaagent. | |
350 /////////////////////////////////////////////////////////////// | |
351 | |
352 jint | |
353 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
1121 | 354 // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
355 // has already been validated in JNI GetEnv(). | |
356 int major, minor, micro; | |
357 | |
358 // micro version doesn't matter here (yet?) | |
359 decode_version_values(version, &major, &minor, µ); | |
360 switch (major) { | |
1988 | 361 case 1: |
1121 | 362 switch (minor) { |
1988 | 363 case 0: // version 1.0.<micro> is recognized |
364 case 1: // version 1.1.<micro> is recognized | |
365 case 2: // version 1.2.<micro> is recognized | |
1121 | 366 break; |
367 | |
1988 | 368 default: |
1121 | 369 return JNI_EVERSION; // unsupported minor version number |
370 } | |
371 break; | |
1988 | 372 default: |
1121 | 373 return JNI_EVERSION; // unsupported major version number |
374 } | |
0 | 375 |
376 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
377 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
378 // transition code: native to VM | |
379 ThreadInVMfromNative __tiv(current_thread); | |
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380 VM_ENTRY_BASE(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) |
0 | 381 debug_only(VMNativeEntryWrapper __vew;) |
382 | |
1121 | 383 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 384 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
385 return JNI_OK; | |
386 | |
387 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
388 // not live, no thread to transition | |
1121 | 389 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 390 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
391 return JNI_OK; | |
392 | |
393 } else { | |
394 // Called at the wrong time | |
395 *penv = NULL; | |
396 return JNI_EDETACHED; | |
397 } | |
398 } | |
399 | |
1121 | 400 |
401 void | |
402 JvmtiExport::decode_version_values(jint version, int * major, int * minor, | |
403 int * micro) { | |
404 *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; | |
405 *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; | |
406 *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; | |
407 } | |
408 | |
0 | 409 void JvmtiExport::enter_primordial_phase() { |
410 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
411 } | |
412 | |
413 void JvmtiExport::enter_start_phase() { | |
414 JvmtiManageCapabilities::recompute_always_capabilities(); | |
415 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
416 } | |
417 | |
418 void JvmtiExport::enter_onload_phase() { | |
419 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
420 } | |
421 | |
422 void JvmtiExport::enter_live_phase() { | |
423 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
424 } | |
425 | |
426 // | |
427 // JVMTI events that the VM posts to the debugger and also startup agent | |
428 // and call the agent's premain() for java.lang.instrument. | |
429 // | |
430 | |
431 void JvmtiExport::post_vm_start() { | |
432 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
433 | |
434 // can now enable some events | |
435 JvmtiEventController::vm_start(); | |
436 | |
437 JvmtiEnvIterator it; | |
438 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
439 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
440 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
441 | |
442 JavaThread *thread = JavaThread::current(); | |
443 JvmtiThreadEventMark jem(thread); | |
444 JvmtiJavaThreadEventTransition jet(thread); | |
445 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
446 if (callback != NULL) { | |
447 (*callback)(env->jvmti_external(), jem.jni_env()); | |
448 } | |
449 } | |
450 } | |
451 } | |
452 | |
453 | |
454 void JvmtiExport::post_vm_initialized() { | |
455 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
456 | |
457 // can now enable events | |
458 JvmtiEventController::vm_init(); | |
459 | |
460 JvmtiEnvIterator it; | |
461 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
462 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
463 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
464 | |
465 JavaThread *thread = JavaThread::current(); | |
466 JvmtiThreadEventMark jem(thread); | |
467 JvmtiJavaThreadEventTransition jet(thread); | |
468 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
469 if (callback != NULL) { | |
470 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
471 } | |
472 } | |
473 } | |
474 } | |
475 | |
476 | |
477 void JvmtiExport::post_vm_death() { | |
478 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
479 | |
480 JvmtiEnvIterator it; | |
481 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
482 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
483 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
484 | |
485 JavaThread *thread = JavaThread::current(); | |
486 JvmtiEventMark jem(thread); | |
487 JvmtiJavaThreadEventTransition jet(thread); | |
488 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
489 if (callback != NULL) { | |
490 (*callback)(env->jvmti_external(), jem.jni_env()); | |
491 } | |
492 } | |
493 } | |
494 | |
495 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
496 JvmtiEventController::vm_death(); | |
497 } | |
498 | |
499 char** | |
500 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
501 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
502 // go away while we iterate them. No locks during VM bring-up. | |
503 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
504 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
505 } else { | |
506 MutexLocker mu(JvmtiThreadState_lock); | |
507 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
508 } | |
509 } | |
510 | |
511 class JvmtiClassFileLoadHookPoster : public StackObj { | |
512 private: | |
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513 Symbol* _h_name; |
0 | 514 Handle _class_loader; |
515 Handle _h_protection_domain; | |
516 unsigned char ** _data_ptr; | |
517 unsigned char ** _end_ptr; | |
518 JavaThread * _thread; | |
519 jint _curr_len; | |
520 unsigned char * _curr_data; | |
521 JvmtiEnv * _curr_env; | |
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522 JvmtiCachedClassFileData ** _cached_class_file_ptr; |
0 | 523 JvmtiThreadState * _state; |
524 KlassHandle * _h_class_being_redefined; | |
525 JvmtiClassLoadKind _load_kind; | |
526 | |
527 public: | |
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528 inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
0 | 529 Handle h_protection_domain, |
530 unsigned char **data_ptr, unsigned char **end_ptr, | |
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531 JvmtiCachedClassFileData **cache_ptr) { |
0 | 532 _h_name = h_name; |
533 _class_loader = class_loader; | |
534 _h_protection_domain = h_protection_domain; | |
535 _data_ptr = data_ptr; | |
536 _end_ptr = end_ptr; | |
537 _thread = JavaThread::current(); | |
538 _curr_len = *end_ptr - *data_ptr; | |
539 _curr_data = *data_ptr; | |
540 _curr_env = NULL; | |
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541 _cached_class_file_ptr = cache_ptr; |
0 | 542 |
543 _state = _thread->jvmti_thread_state(); | |
544 if (_state != NULL) { | |
545 _h_class_being_redefined = _state->get_class_being_redefined(); | |
546 _load_kind = _state->get_class_load_kind(); | |
547 // Clear class_being_redefined flag here. The action | |
548 // from agent handler could generate a new class file load | |
549 // hook event and if it is not cleared the new event generated | |
550 // from regular class file load could have this stale redefined | |
551 // class handle info. | |
552 _state->clear_class_being_redefined(); | |
553 } else { | |
554 // redefine and retransform will always set the thread state | |
555 _h_class_being_redefined = (KlassHandle *) NULL; | |
556 _load_kind = jvmti_class_load_kind_load; | |
557 } | |
558 } | |
559 | |
560 void post() { | |
561 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
562 // ("JVMTI [%s] class file load hook event triggered", | |
563 // JvmtiTrace::safe_get_thread_name(_thread))); | |
564 post_all_envs(); | |
565 copy_modified_data(); | |
566 } | |
567 | |
568 private: | |
569 void post_all_envs() { | |
570 if (_load_kind != jvmti_class_load_kind_retransform) { | |
571 // for class load and redefine, | |
572 // call the non-retransformable agents | |
573 JvmtiEnvIterator it; | |
574 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
575 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
576 // non-retransformable agents cannot retransform back, | |
577 // so no need to cache the original class file bytes | |
578 post_to_env(env, false); | |
579 } | |
580 } | |
581 } | |
582 JvmtiEnvIterator it; | |
583 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
584 // retransformable agents get all events | |
585 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
586 // retransformable agents need to cache the original class file | |
587 // bytes if changes are made via the ClassFileLoadHook | |
588 post_to_env(env, true); | |
589 } | |
590 } | |
591 } | |
592 | |
593 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
594 unsigned char *new_data = NULL; | |
595 jint new_len = 0; | |
596 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
597 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
598 // JvmtiTrace::safe_get_thread_name(_thread), | |
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599 // _h_name == NULL ? "NULL" : _h_name->as_utf8(), |
0 | 600 // _curr_data, _curr_len )); |
601 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
602 _h_protection_domain, | |
603 _h_class_being_redefined); | |
604 JvmtiJavaThreadEventTransition jet(_thread); | |
605 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
606 NULL : jem.jni_env(); | |
607 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
608 if (callback != NULL) { | |
609 (*callback)(env->jvmti_external(), jni_env, | |
610 jem.class_being_redefined(), | |
611 jem.jloader(), jem.class_name(), | |
612 jem.protection_domain(), | |
613 _curr_len, _curr_data, | |
614 &new_len, &new_data); | |
615 } | |
616 if (new_data != NULL) { | |
617 // this agent has modified class data. | |
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618 if (caching_needed && *_cached_class_file_ptr == NULL) { |
0 | 619 // data has been changed by the new retransformable agent |
620 // and it hasn't already been cached, cache it | |
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621 JvmtiCachedClassFileData *p; |
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622 p = (JvmtiCachedClassFileData *)os::malloc( |
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623 offset_of(JvmtiCachedClassFileData, data) + _curr_len, mtInternal); |
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624 if (p == NULL) { |
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625 vm_exit_out_of_memory(offset_of(JvmtiCachedClassFileData, data) + _curr_len, |
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626 OOM_MALLOC_ERROR, |
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627 "unable to allocate cached copy of original class bytes"); |
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628 } |
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629 p->length = _curr_len; |
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630 memcpy(p->data, _curr_data, _curr_len); |
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631 *_cached_class_file_ptr = p; |
0 | 632 } |
633 | |
634 if (_curr_data != *_data_ptr) { | |
635 // curr_data is previous agent modified class data. | |
636 // And this has been changed by the new agent so | |
637 // we can delete it now. | |
638 _curr_env->Deallocate(_curr_data); | |
639 } | |
640 | |
641 // Class file data has changed by the current agent. | |
642 _curr_data = new_data; | |
643 _curr_len = new_len; | |
644 // Save the current agent env we need this to deallocate the | |
645 // memory allocated by this agent. | |
646 _curr_env = env; | |
647 } | |
648 } | |
649 | |
650 void copy_modified_data() { | |
651 // if one of the agent has modified class file data. | |
652 // Copy modified class data to new resources array. | |
653 if (_curr_data != *_data_ptr) { | |
654 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
655 memcpy(*_data_ptr, _curr_data, _curr_len); | |
656 *_end_ptr = *_data_ptr + _curr_len; | |
657 _curr_env->Deallocate(_curr_data); | |
658 } | |
659 } | |
660 }; | |
661 | |
662 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
663 | |
664 // this entry is for class file load hook on class load, redefine and retransform | |
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665 void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
0 | 666 Handle class_loader, |
667 Handle h_protection_domain, | |
668 unsigned char **data_ptr, | |
669 unsigned char **end_ptr, | |
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670 JvmtiCachedClassFileData **cache_ptr) { |
0 | 671 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, |
672 h_protection_domain, | |
673 data_ptr, end_ptr, | |
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674 cache_ptr); |
0 | 675 poster.post(); |
676 } | |
677 | |
678 void JvmtiExport::report_unsupported(bool on) { | |
679 // If any JVMTI service is turned on, we need to exit before native code | |
680 // tries to access nonexistant services. | |
681 if (on) { | |
682 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
683 } | |
684 } | |
685 | |
686 | |
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687 static inline Klass* oop_to_klass(oop obj) { |
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688 Klass* k = obj->klass(); |
0 | 689 |
690 // if the object is a java.lang.Class then return the java mirror | |
1142 | 691 if (k == SystemDictionary::Class_klass()) { |
0 | 692 if (!java_lang_Class::is_primitive(obj)) { |
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693 k = java_lang_Class::as_Klass(obj); |
0 | 694 assert(k != NULL, "class for non-primitive mirror must exist"); |
695 } | |
696 } | |
697 return k; | |
698 } | |
699 | |
700 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
701 private: | |
702 jobject _jobj; | |
703 jlong _size; | |
704 public: | |
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705 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klass(obj)) { |
0 | 706 _jobj = (jobject)to_jobject(obj); |
707 _size = obj->size() * wordSize; | |
708 }; | |
709 jobject jni_jobject() { return _jobj; } | |
710 jlong size() { return _size; } | |
711 }; | |
712 | |
713 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
714 private: | |
715 jint _code_size; | |
716 const void *_code_data; | |
717 jint _map_length; | |
718 jvmtiAddrLocationMap *_map; | |
719 const void *_compile_info; | |
720 public: | |
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721 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
0 | 722 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
1748 | 723 _code_data = nm->insts_begin(); |
724 _code_size = nm->insts_size(); | |
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725 _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
0 | 726 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
727 } | |
728 ~JvmtiCompiledMethodLoadEventMark() { | |
6197 | 729 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map, mtInternal); |
0 | 730 } |
731 | |
732 jint code_size() { return _code_size; } | |
733 const void *code_data() { return _code_data; } | |
734 jint map_length() { return _map_length; } | |
735 const jvmtiAddrLocationMap* map() { return _map; } | |
736 const void *compile_info() { return _compile_info; } | |
737 }; | |
738 | |
739 | |
740 | |
741 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
742 private: | |
743 jobject _jobj; | |
744 public: | |
745 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
746 : JvmtiThreadEventMark(thread){ | |
747 _jobj = to_jobject(object); | |
748 } | |
749 jobject jni_object() { return _jobj; } | |
750 }; | |
751 | |
752 /////////////////////////////////////////////////////////////// | |
753 // | |
754 // pending CompiledMethodUnload support | |
755 // | |
756 | |
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757 void JvmtiExport::post_compiled_method_unload( |
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758 jmethodID method, const void *code_begin) { |
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759 JavaThread* thread = JavaThread::current(); |
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760 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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761 ("JVMTI [%s] method compile unload event triggered", |
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762 JvmtiTrace::safe_get_thread_name(thread))); |
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763 |
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764 // post the event for each environment that has this event enabled. |
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765 JvmtiEnvIterator it; |
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766 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
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767 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
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768 |
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769 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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770 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
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771 JvmtiTrace::safe_get_thread_name(thread), method)); |
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772 |
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773 ResourceMark rm(thread); |
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774 |
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775 JvmtiEventMark jem(thread); |
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776 JvmtiJavaThreadEventTransition jet(thread); |
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777 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
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778 if (callback != NULL) { |
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779 (*callback)(env->jvmti_external(), method, code_begin); |
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780 } |
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781 } |
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782 } |
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783 } |
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784 |
0 | 785 /////////////////////////////////////////////////////////////// |
786 // | |
787 // JvmtiExport | |
788 // | |
789 | |
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790 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, Method* method, address location) { |
0 | 791 HandleMark hm(thread); |
792 methodHandle mh(thread, method); | |
793 | |
794 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
795 if (state == NULL) { | |
796 return; | |
797 } | |
798 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
799 JvmtiTrace::safe_get_thread_name(thread))); | |
800 JvmtiEnvThreadStateIterator it(state); | |
801 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
802 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
803 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
804 ThreadState old_os_state = thread->osthread()->get_state(); | |
805 thread->osthread()->set_state(BREAKPOINTED); | |
806 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
807 JvmtiTrace::safe_get_thread_name(thread), | |
808 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
809 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
810 location - mh()->code_base() )); | |
811 | |
812 JvmtiEnv *env = ets->get_env(); | |
813 JvmtiLocationEventMark jem(thread, mh, location); | |
814 JvmtiJavaThreadEventTransition jet(thread); | |
815 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
816 if (callback != NULL) { | |
817 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
818 jem.jni_methodID(), jem.location()); | |
819 } | |
820 | |
821 ets->set_breakpoint_posted(); | |
822 thread->osthread()->set_state(old_os_state); | |
823 } | |
824 } | |
825 } | |
826 | |
827 ////////////////////////////////////////////////////////////////////////////// | |
828 | |
829 bool JvmtiExport::_can_get_source_debug_extension = false; | |
830 bool JvmtiExport::_can_maintain_original_method_order = false; | |
831 bool JvmtiExport::_can_post_interpreter_events = false; | |
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832 bool JvmtiExport::_can_post_on_exceptions = false; |
0 | 833 bool JvmtiExport::_can_post_breakpoint = false; |
834 bool JvmtiExport::_can_post_field_access = false; | |
835 bool JvmtiExport::_can_post_field_modification = false; | |
836 bool JvmtiExport::_can_post_method_entry = false; | |
837 bool JvmtiExport::_can_post_method_exit = false; | |
838 bool JvmtiExport::_can_pop_frame = false; | |
839 bool JvmtiExport::_can_force_early_return = false; | |
840 | |
841 bool JvmtiExport::_should_post_single_step = false; | |
842 bool JvmtiExport::_should_post_field_access = false; | |
843 bool JvmtiExport::_should_post_field_modification = false; | |
844 bool JvmtiExport::_should_post_class_load = false; | |
845 bool JvmtiExport::_should_post_class_prepare = false; | |
846 bool JvmtiExport::_should_post_class_unload = false; | |
847 bool JvmtiExport::_should_post_thread_life = false; | |
848 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
849 bool JvmtiExport::_should_post_native_method_bind = false; | |
850 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
851 bool JvmtiExport::_should_post_data_dump = false; | |
852 bool JvmtiExport::_should_post_compiled_method_load = false; | |
853 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
854 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
855 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
856 bool JvmtiExport::_should_post_monitor_wait = false; | |
857 bool JvmtiExport::_should_post_monitor_waited = false; | |
858 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
859 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
860 bool JvmtiExport::_should_post_object_free = false; | |
861 bool JvmtiExport::_should_post_resource_exhausted = false; | |
862 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
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863 bool JvmtiExport::_should_post_on_exceptions = false; |
0 | 864 |
865 //////////////////////////////////////////////////////////////////////////////////////////////// | |
866 | |
867 | |
868 // | |
869 // JVMTI single step management | |
870 // | |
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871 void JvmtiExport::at_single_stepping_point(JavaThread *thread, Method* method, address location) { |
0 | 872 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); |
873 | |
874 HandleMark hm(thread); | |
875 methodHandle mh(thread, method); | |
876 | |
877 // update information about current location and post a step event | |
878 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
879 if (state == NULL) { | |
880 return; | |
881 } | |
882 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
883 JvmtiTrace::safe_get_thread_name(thread))); | |
884 if (!state->hide_single_stepping()) { | |
885 if (state->is_pending_step_for_popframe()) { | |
886 state->process_pending_step_for_popframe(); | |
887 } | |
888 if (state->is_pending_step_for_earlyret()) { | |
889 state->process_pending_step_for_earlyret(); | |
890 } | |
891 JvmtiExport::post_single_step(thread, mh(), location); | |
892 } | |
893 } | |
894 | |
895 | |
896 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
897 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
898 if (state != NULL) { | |
899 state->clear_hide_single_stepping(); | |
900 } | |
901 } | |
902 | |
903 | |
904 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
905 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
906 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
907 state->set_hide_single_stepping(); | |
908 return true; | |
909 } else { | |
910 return false; | |
911 } | |
912 } | |
913 | |
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914 void JvmtiExport::post_class_load(JavaThread *thread, Klass* klass) { |
0 | 915 HandleMark hm(thread); |
916 KlassHandle kh(thread, klass); | |
917 | |
918 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
919 JvmtiTrace::safe_get_thread_name(thread))); | |
920 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
921 if (state == NULL) { | |
922 return; | |
923 } | |
924 JvmtiEnvThreadStateIterator it(state); | |
925 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
926 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
927 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
928 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 929 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 930 |
931 JvmtiEnv *env = ets->get_env(); | |
932 JvmtiClassEventMark jem(thread, kh()); | |
933 JvmtiJavaThreadEventTransition jet(thread); | |
934 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
935 if (callback != NULL) { | |
936 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
937 } | |
938 } | |
939 } | |
940 } | |
941 | |
942 | |
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943 void JvmtiExport::post_class_prepare(JavaThread *thread, Klass* klass) { |
0 | 944 HandleMark hm(thread); |
945 KlassHandle kh(thread, klass); | |
946 | |
947 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
948 JvmtiTrace::safe_get_thread_name(thread))); | |
949 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
950 if (state == NULL) { | |
951 return; | |
952 } | |
953 JvmtiEnvThreadStateIterator it(state); | |
954 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
955 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
956 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
957 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 958 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 959 |
960 JvmtiEnv *env = ets->get_env(); | |
961 JvmtiClassEventMark jem(thread, kh()); | |
962 JvmtiJavaThreadEventTransition jet(thread); | |
963 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
964 if (callback != NULL) { | |
965 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
966 } | |
967 } | |
968 } | |
969 } | |
970 | |
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971 void JvmtiExport::post_class_unload(Klass* klass) { |
0 | 972 Thread *thread = Thread::current(); |
973 HandleMark hm(thread); | |
974 KlassHandle kh(thread, klass); | |
975 | |
976 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
977 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
978 assert(thread->is_VM_thread(), "wrong thread"); | |
979 | |
980 // get JavaThread for whom we are proxy | |
981 JavaThread *real_thread = | |
982 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
983 | |
984 JvmtiEnvIterator it; | |
985 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
986 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
987 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
6983 | 988 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 989 |
990 // do everything manually, since this is a proxy - needs special care | |
991 JNIEnv* jni_env = real_thread->jni_environment(); | |
992 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
6983 | 993 jclass jk = (jclass)JNIHandles::make_local(real_thread, kh()->java_mirror()); |
0 | 994 |
995 // Before we call the JVMTI agent, we have to set the state in the | |
996 // thread for which we are proxying. | |
997 JavaThreadState prev_state = real_thread->thread_state(); | |
998 assert(prev_state == _thread_blocked, "JavaThread should be at safepoint"); | |
999 real_thread->set_thread_state(_thread_in_native); | |
1000 | |
1001 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
1002 if (callback != NULL) { | |
1003 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
1004 } | |
1005 | |
1006 assert(real_thread->thread_state() == _thread_in_native, | |
1007 "JavaThread should be in native"); | |
1008 real_thread->set_thread_state(prev_state); | |
1009 | |
1010 JNIHandles::destroy_local(jk); | |
1011 JNIHandles::destroy_local(jt); | |
1012 } | |
1013 } | |
1014 } | |
1015 } | |
1016 | |
1017 | |
1018 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
1019 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1020 | |
1021 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
1022 JvmtiTrace::safe_get_thread_name(thread))); | |
1023 | |
1024 // do JVMTI thread initialization (if needed) | |
1025 JvmtiEventController::thread_started(thread); | |
1026 | |
1027 // Do not post thread start event for hidden java thread. | |
1028 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
1029 !thread->is_hidden_from_external_view()) { | |
1030 JvmtiEnvIterator it; | |
1031 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1032 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
1033 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
1034 JvmtiTrace::safe_get_thread_name(thread) )); | |
1035 | |
1036 JvmtiThreadEventMark jem(thread); | |
1037 JvmtiJavaThreadEventTransition jet(thread); | |
1038 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
1039 if (callback != NULL) { | |
1040 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1041 } | |
1042 } | |
1043 } | |
1044 } | |
1045 } | |
1046 | |
1047 | |
1048 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
1049 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
1050 JvmtiTrace::safe_get_thread_name(thread))); | |
1051 | |
1052 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1053 if (state == NULL) { | |
1054 return; | |
1055 } | |
1056 | |
1057 // Do not post thread end event for hidden java thread. | |
1058 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
1059 !thread->is_hidden_from_external_view()) { | |
1060 | |
1061 JvmtiEnvThreadStateIterator it(state); | |
1062 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1063 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
1064 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
1065 JvmtiTrace::safe_get_thread_name(thread) )); | |
1066 | |
1067 JvmtiEnv *env = ets->get_env(); | |
1068 JvmtiThreadEventMark jem(thread); | |
1069 JvmtiJavaThreadEventTransition jet(thread); | |
1070 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
1071 if (callback != NULL) { | |
1072 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1073 } | |
1074 } | |
1075 } | |
1076 } | |
1077 } | |
1078 | |
1079 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
1080 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
1081 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
1082 | |
1083 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
1084 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
1085 | |
1086 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
1087 if (callback != NULL) { | |
1088 (*callback)(env->jvmti_external(), tag); | |
1089 } | |
1090 } | |
1091 | |
1092 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
1093 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
1094 | |
1095 JvmtiEnvIterator it; | |
1096 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1097 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
1098 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
1099 | |
1100 JavaThread *thread = JavaThread::current(); | |
1101 JvmtiThreadEventMark jem(thread); | |
1102 JvmtiJavaThreadEventTransition jet(thread); | |
1103 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
1104 if (callback != NULL) { | |
1105 (*callback)(env->jvmti_external(), jem.jni_env(), | |
1106 resource_exhausted_flags, NULL, description); | |
1107 } | |
1108 } | |
1109 } | |
1110 } | |
1111 | |
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1112 void JvmtiExport::post_method_entry(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1113 HandleMark hm(thread); |
1114 methodHandle mh(thread, method); | |
1115 | |
1116 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
1117 JvmtiTrace::safe_get_thread_name(thread), | |
1118 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1119 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1120 | |
1121 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1122 if (state == NULL || !state->is_interp_only_mode()) { | |
1123 // for any thread that actually wants method entry, interp_only_mode is set | |
1124 return; | |
1125 } | |
1126 | |
1127 state->incr_cur_stack_depth(); | |
1128 | |
1129 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1130 JvmtiEnvThreadStateIterator it(state); | |
1131 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1132 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1133 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
1134 JvmtiTrace::safe_get_thread_name(thread), | |
1135 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1136 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1137 | |
1138 JvmtiEnv *env = ets->get_env(); | |
1139 JvmtiMethodEventMark jem(thread, mh); | |
1140 JvmtiJavaThreadEventTransition jet(thread); | |
1141 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
1142 if (callback != NULL) { | |
1143 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
1144 } | |
1145 } | |
1146 } | |
1147 } | |
1148 } | |
1149 | |
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1150 void JvmtiExport::post_method_exit(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1151 HandleMark hm(thread); |
1152 methodHandle mh(thread, method); | |
1153 | |
1154 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
1155 JvmtiTrace::safe_get_thread_name(thread), | |
1156 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1157 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1158 | |
1159 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1160 if (state == NULL || !state->is_interp_only_mode()) { | |
1161 // for any thread that actually wants method exit, interp_only_mode is set | |
1162 return; | |
1163 } | |
1164 | |
1165 // return a flag when a method terminates by throwing an exception | |
1166 // i.e. if an exception is thrown and it's not caught by the current method | |
1167 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
1168 | |
1169 | |
1170 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1171 Handle result; | |
1172 jvalue value; | |
1173 value.j = 0L; | |
1174 | |
1175 // if the method hasn't been popped because of an exception then we populate | |
1176 // the return_value parameter for the callback. At this point we only have | |
1177 // the address of a "raw result" and we just call into the interpreter to | |
1178 // convert this into a jvalue. | |
1179 if (!exception_exit) { | |
1180 oop oop_result; | |
1181 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
1182 if (type == T_OBJECT || type == T_ARRAY) { | |
1183 result = Handle(thread, oop_result); | |
1184 } | |
1185 } | |
1186 | |
1187 JvmtiEnvThreadStateIterator it(state); | |
1188 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1189 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1190 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", | |
1191 JvmtiTrace::safe_get_thread_name(thread), | |
1192 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1193 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1194 | |
1195 JvmtiEnv *env = ets->get_env(); | |
1196 JvmtiMethodEventMark jem(thread, mh); | |
1197 if (result.not_null()) { | |
1198 value.l = JNIHandles::make_local(thread, result()); | |
1199 } | |
1200 JvmtiJavaThreadEventTransition jet(thread); | |
1201 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
1202 if (callback != NULL) { | |
1203 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1204 jem.jni_methodID(), exception_exit, value); | |
1205 } | |
1206 } | |
1207 } | |
1208 } | |
1209 | |
1210 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1211 JvmtiEnvThreadStateIterator it(state); | |
1212 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1213 int cur_frame_number = state->cur_stack_depth(); | |
1214 | |
1215 if (ets->is_frame_pop(cur_frame_number)) { | |
1216 // we have a NotifyFramePop entry for this frame. | |
1217 // now check that this env/thread wants this event | |
1218 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1219 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
1220 JvmtiTrace::safe_get_thread_name(thread), | |
1221 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1222 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1223 | |
1224 // we also need to issue a frame pop event for this frame | |
1225 JvmtiEnv *env = ets->get_env(); | |
1226 JvmtiMethodEventMark jem(thread, mh); | |
1227 JvmtiJavaThreadEventTransition jet(thread); | |
1228 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
1229 if (callback != NULL) { | |
1230 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1231 jem.jni_methodID(), exception_exit); | |
1232 } | |
1233 } | |
1234 // remove the frame's entry | |
1235 ets->clear_frame_pop(cur_frame_number); | |
1236 } | |
1237 } | |
1238 } | |
1239 | |
1240 state->decr_cur_stack_depth(); | |
1241 } | |
1242 | |
1243 | |
1244 // Todo: inline this for optimization | |
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1245 void JvmtiExport::post_single_step(JavaThread *thread, Method* method, address location) { |
0 | 1246 HandleMark hm(thread); |
1247 methodHandle mh(thread, method); | |
1248 | |
1249 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1250 if (state == NULL) { | |
1251 return; | |
1252 } | |
1253 JvmtiEnvThreadStateIterator it(state); | |
1254 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1255 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
1256 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
1257 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
1258 JvmtiTrace::safe_get_thread_name(thread), | |
1259 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1260 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1261 location - mh()->code_base() )); | |
1262 | |
1263 JvmtiEnv *env = ets->get_env(); | |
1264 JvmtiLocationEventMark jem(thread, mh, location); | |
1265 JvmtiJavaThreadEventTransition jet(thread); | |
1266 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
1267 if (callback != NULL) { | |
1268 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1269 jem.jni_methodID(), jem.location()); | |
1270 } | |
1271 | |
1272 ets->set_single_stepping_posted(); | |
1273 } | |
1274 } | |
1275 } | |
1276 | |
1277 | |
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1278 void JvmtiExport::post_exception_throw(JavaThread *thread, Method* method, address location, oop exception) { |
0 | 1279 HandleMark hm(thread); |
1280 methodHandle mh(thread, method); | |
1281 Handle exception_handle(thread, exception); | |
1282 | |
1283 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1284 if (state == NULL) { | |
1285 return; | |
1286 } | |
1287 | |
1288 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
1289 JvmtiTrace::safe_get_thread_name(thread))); | |
1290 if (!state->is_exception_detected()) { | |
1291 state->set_exception_detected(); | |
1292 JvmtiEnvThreadStateIterator it(state); | |
1293 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1294 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
1295 | |
1296 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
1297 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
1298 JvmtiTrace::safe_get_thread_name(thread), | |
1299 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1300 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1301 location - mh()->code_base() )); | |
1302 | |
1303 JvmtiEnv *env = ets->get_env(); | |
1304 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1305 | |
1306 // It's okay to clear these exceptions here because we duplicate | |
1307 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
1308 EXCEPTION_MARK; | |
1309 | |
1310 bool should_repeat; | |
1311 vframeStream st(thread); | |
1312 assert(!st.at_end(), "cannot be at end"); | |
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1313 Method* current_method = NULL; |
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1314 // A GC may occur during the Method::fast_exception_handler_bci_for() |
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1315 // call below if it needs to load the constraint class. Using a |
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1316 // methodHandle to keep the 'current_method' from being deallocated |
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1317 // if GC happens. |
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1318 methodHandle current_mh = methodHandle(thread, current_method); |
0 | 1319 int current_bci = -1; |
1320 do { | |
1321 current_method = st.method(); | |
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1322 current_mh = methodHandle(thread, current_method); |
0 | 1323 current_bci = st.bci(); |
1324 do { | |
1325 should_repeat = false; | |
1326 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
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1327 current_bci = Method::fast_exception_handler_bci_for( |
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1328 current_mh, eh_klass, current_bci, THREAD); |
0 | 1329 if (HAS_PENDING_EXCEPTION) { |
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1330 exception_handle = Handle(thread, PENDING_EXCEPTION); |
0 | 1331 CLEAR_PENDING_EXCEPTION; |
1332 should_repeat = true; | |
1333 } | |
1334 } while (should_repeat && (current_bci != -1)); | |
1335 st.next(); | |
1336 } while ((current_bci < 0) && (!st.at_end())); | |
1337 | |
1338 jmethodID catch_jmethodID; | |
1339 if (current_bci < 0) { | |
1340 catch_jmethodID = 0; | |
1341 current_bci = 0; | |
1342 } else { | |
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1343 catch_jmethodID = jem.to_jmethodID(current_mh); |
0 | 1344 } |
1345 | |
1346 JvmtiJavaThreadEventTransition jet(thread); | |
1347 jvmtiEventException callback = env->callbacks()->Exception; | |
1348 if (callback != NULL) { | |
1349 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1350 jem.jni_methodID(), jem.location(), | |
1351 jem.exception(), | |
1352 catch_jmethodID, current_bci); | |
1353 } | |
1354 } | |
1355 } | |
1356 } | |
1357 | |
1358 // frames may get popped because of this throw, be safe - invalidate cached depth | |
1359 state->invalidate_cur_stack_depth(); | |
1360 } | |
1361 | |
1362 | |
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1363 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, Method* method, address location, oop exception, bool in_handler_frame) { |
0 | 1364 HandleMark hm(thread); |
1365 methodHandle mh(thread, method); | |
1366 Handle exception_handle(thread, exception); | |
1367 | |
1368 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1369 if (state == NULL) { | |
1370 return; | |
1371 } | |
1372 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1373 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
1374 JvmtiTrace::safe_get_thread_name(thread), | |
1375 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1376 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1377 location==0? "no location:" : "", | |
1378 location==0? 0 : location - mh()->code_base(), | |
1379 in_handler_frame? "in handler frame" : "not handler frame" )); | |
1380 | |
1381 if (state->is_exception_detected()) { | |
1382 | |
1383 state->invalidate_cur_stack_depth(); | |
1384 if (!in_handler_frame) { | |
1385 // Not in exception handler. | |
1386 if(state->is_interp_only_mode()) { | |
1387 // method exit and frame pop events are posted only in interp mode. | |
1388 // When these events are enabled code should be in running in interp mode. | |
1389 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
1390 // The cached cur_stack_depth might have changed from the | |
1391 // operations of frame pop or method exit. We are not 100% sure | |
1392 // the cached cur_stack_depth is still valid depth so invalidate | |
1393 // it. | |
1394 state->invalidate_cur_stack_depth(); | |
1395 } | |
1396 } else { | |
1397 // In exception handler frame. Report exception catch. | |
1398 assert(location != NULL, "must be a known location"); | |
1399 // Update cur_stack_depth - the frames above the current frame | |
1400 // have been unwound due to this exception: | |
1401 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
1402 state->set_exception_caught(); | |
1403 | |
1404 JvmtiEnvThreadStateIterator it(state); | |
1405 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1406 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
1407 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1408 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
1409 JvmtiTrace::safe_get_thread_name(thread), | |
1410 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1411 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1412 location - mh()->code_base() )); | |
1413 | |
1414 JvmtiEnv *env = ets->get_env(); | |
1415 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1416 JvmtiJavaThreadEventTransition jet(thread); | |
1417 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
1418 if (callback != NULL) { | |
1419 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1420 jem.jni_methodID(), jem.location(), | |
1421 jem.exception()); | |
1422 } | |
1423 } | |
1424 } | |
1425 } | |
1426 } | |
1427 } | |
1428 | |
1429 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1430 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1431 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1432 // At least one field access watch is set so we have more work | |
1433 // to do. This wrapper is used by entry points that allow us | |
1434 // to create handles in post_field_access_by_jni(). | |
1435 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1436 // event posting can block so refetch oop if we were passed a jobj | |
1437 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1438 } | |
1439 return obj; | |
1440 } | |
1441 | |
1442 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1443 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1444 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1445 // At least one field access watch is set so we have more work | |
1446 // to do. This wrapper is used by "quick" entry points that don't | |
1447 // allow us to create handles in post_field_access_by_jni(). We | |
1448 // override that with a ResetNoHandleMark. | |
1449 ResetNoHandleMark rnhm; | |
1450 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1451 // event posting can block so refetch oop if we were passed a jobj | |
1452 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1453 } | |
1454 return obj; | |
1455 } | |
1456 | |
1457 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
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1458 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1459 // We must be called with a Java context in order to provide reasonable |
1460 // values for the klazz, method, and location fields. The callers of this | |
1461 // function don't make the call unless there is a Java context. | |
1462 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
1463 | |
1464 ResourceMark rm; | |
1465 fieldDescriptor fd; | |
1466 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1467 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1468 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
1469 if (!valid_fieldID) return; | |
1470 // field accesses are not watched so bail | |
1471 if (!fd.is_field_access_watched()) return; | |
1472 | |
1473 HandleMark hm(thread); | |
1474 KlassHandle h_klass(thread, klass); | |
1475 Handle h_obj; | |
1476 if (!is_static) { | |
1477 // non-static field accessors have an object, but we need a handle | |
1478 assert(obj != NULL, "non-static needs an object"); | |
1479 h_obj = Handle(thread, obj); | |
1480 } | |
1481 post_field_access(thread, | |
1482 thread->last_frame().interpreter_frame_method(), | |
1483 thread->last_frame().interpreter_frame_bcp(), | |
1484 h_klass, h_obj, fieldID); | |
1485 } | |
1486 | |
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1487 void JvmtiExport::post_field_access(JavaThread *thread, Method* method, |
0 | 1488 address location, KlassHandle field_klass, Handle object, jfieldID field) { |
1489 | |
1490 HandleMark hm(thread); | |
1491 methodHandle mh(thread, method); | |
1492 | |
1493 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1494 if (state == NULL) { | |
1495 return; | |
1496 } | |
1497 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
1498 JvmtiTrace::safe_get_thread_name(thread))); | |
1499 JvmtiEnvThreadStateIterator it(state); | |
1500 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1501 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
1502 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
1503 JvmtiTrace::safe_get_thread_name(thread), | |
1504 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1505 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1506 location - mh()->code_base() )); | |
1507 | |
1508 JvmtiEnv *env = ets->get_env(); | |
1509 JvmtiLocationEventMark jem(thread, mh, location); | |
1510 jclass field_jclass = jem.to_jclass(field_klass()); | |
1511 jobject field_jobject = jem.to_jobject(object()); | |
1512 JvmtiJavaThreadEventTransition jet(thread); | |
1513 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
1514 if (callback != NULL) { | |
1515 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1516 jem.jni_methodID(), jem.location(), | |
1517 field_jclass, field_jobject, field); | |
1518 } | |
1519 } | |
1520 } | |
1521 } | |
1522 | |
1523 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1524 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1525 char sig_type, jvalue *value) { |
1526 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1527 // At least one field modification watch is set so we have more work | |
1528 // to do. This wrapper is used by entry points that allow us | |
1529 // to create handles in post_field_modification_by_jni(). | |
1530 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1531 // event posting can block so refetch oop if we were passed a jobj | |
1532 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1533 } | |
1534 return obj; | |
1535 } | |
1536 | |
1537 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1538 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1539 char sig_type, jvalue *value) { |
1540 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1541 // At least one field modification watch is set so we have more work | |
1542 // to do. This wrapper is used by "quick" entry points that don't | |
1543 // allow us to create handles in post_field_modification_by_jni(). We | |
1544 // override that with a ResetNoHandleMark. | |
1545 ResetNoHandleMark rnhm; | |
1546 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1547 // event posting can block so refetch oop if we were passed a jobj | |
1548 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1549 } | |
1550 return obj; | |
1551 } | |
1552 | |
1553 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
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1554 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1555 char sig_type, jvalue *value) { |
1556 // We must be called with a Java context in order to provide reasonable | |
1557 // values for the klazz, method, and location fields. The callers of this | |
1558 // function don't make the call unless there is a Java context. | |
1559 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
1560 | |
1561 ResourceMark rm; | |
1562 fieldDescriptor fd; | |
1563 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1564 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1565 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
1566 if (!valid_fieldID) return; | |
1567 // field modifications are not watched so bail | |
1568 if (!fd.is_field_modification_watched()) return; | |
1569 | |
1570 HandleMark hm(thread); | |
1571 | |
1572 Handle h_obj; | |
1573 if (!is_static) { | |
1574 // non-static field accessors have an object, but we need a handle | |
1575 assert(obj != NULL, "non-static needs an object"); | |
1576 h_obj = Handle(thread, obj); | |
1577 } | |
1578 KlassHandle h_klass(thread, klass); | |
1579 post_field_modification(thread, | |
1580 thread->last_frame().interpreter_frame_method(), | |
1581 thread->last_frame().interpreter_frame_bcp(), | |
1582 h_klass, h_obj, fieldID, sig_type, value); | |
1583 } | |
1584 | |
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1585 void JvmtiExport::post_raw_field_modification(JavaThread *thread, Method* method, |
0 | 1586 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1587 char sig_type, jvalue *value) { | |
1588 | |
1589 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'C' || sig_type == 'S') { | |
1590 // 'I' instructions are used for byte, char, short and int. | |
1591 // determine which it really is, and convert | |
1592 fieldDescriptor fd; | |
1593 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
1594 // should be found (if not, leave as is) | |
1595 if (found) { | |
1596 jint ival = value->i; | |
1597 // convert value from int to appropriate type | |
1598 switch (fd.field_type()) { | |
1599 case T_BOOLEAN: | |
1600 sig_type = 'Z'; | |
1601 value->i = 0; // clear it | |
1602 value->z = (jboolean)ival; | |
1603 break; | |
1604 case T_BYTE: | |
1605 sig_type = 'B'; | |
1606 value->i = 0; // clear it | |
1607 value->b = (jbyte)ival; | |
1608 break; | |
1609 case T_CHAR: | |
1610 sig_type = 'C'; | |
1611 value->i = 0; // clear it | |
1612 value->c = (jchar)ival; | |
1613 break; | |
1614 case T_SHORT: | |
1615 sig_type = 'S'; | |
1616 value->i = 0; // clear it | |
1617 value->s = (jshort)ival; | |
1618 break; | |
1619 case T_INT: | |
1620 // nothing to do | |
1621 break; | |
1622 default: | |
1623 // this is an integer instruction, should be one of above | |
1624 ShouldNotReachHere(); | |
1625 break; | |
1626 } | |
1627 } | |
1628 } | |
1629 | |
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1630 assert(sig_type != '[', "array should have sig_type == 'L'"); |
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1631 bool handle_created = false; |
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1632 |
0 | 1633 // convert oop to JNI handle. |
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1634 if (sig_type == 'L') { |
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1635 handle_created = true; |
0 | 1636 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); |
1637 } | |
1638 | |
1639 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
1640 | |
1641 // Destroy the JNI handle allocated above. | |
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1642 if (handle_created) { |
0 | 1643 JNIHandles::destroy_local(value->l); |
1644 } | |
1645 } | |
1646 | |
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1647 void JvmtiExport::post_field_modification(JavaThread *thread, Method* method, |
0 | 1648 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1649 char sig_type, jvalue *value_ptr) { | |
1650 | |
1651 HandleMark hm(thread); | |
1652 methodHandle mh(thread, method); | |
1653 | |
1654 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1655 if (state == NULL) { | |
1656 return; | |
1657 } | |
1658 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1659 ("JVMTI [%s] Trg Field Modification event triggered", | |
1660 JvmtiTrace::safe_get_thread_name(thread))); | |
1661 | |
1662 JvmtiEnvThreadStateIterator it(state); | |
1663 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1664 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
1665 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1666 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
1667 JvmtiTrace::safe_get_thread_name(thread), | |
1668 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1669 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1670 location - mh()->code_base() )); | |
1671 | |
1672 JvmtiEnv *env = ets->get_env(); | |
1673 JvmtiLocationEventMark jem(thread, mh, location); | |
1674 jclass field_jclass = jem.to_jclass(field_klass()); | |
1675 jobject field_jobject = jem.to_jobject(object()); | |
1676 JvmtiJavaThreadEventTransition jet(thread); | |
1677 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
1678 if (callback != NULL) { | |
1679 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1680 jem.jni_methodID(), jem.location(), | |
1681 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
1682 } | |
1683 } | |
1684 } | |
1685 } | |
1686 | |
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1687 void JvmtiExport::post_native_method_bind(Method* method, address* function_ptr) { |
0 | 1688 JavaThread* thread = JavaThread::current(); |
1689 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1690 | |
1691 HandleMark hm(thread); | |
1692 methodHandle mh(thread, method); | |
1693 | |
1694 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
1695 JvmtiTrace::safe_get_thread_name(thread))); | |
1696 | |
1697 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1698 JvmtiEnvIterator it; | |
1699 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1700 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1701 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
1702 JvmtiTrace::safe_get_thread_name(thread) )); | |
1703 | |
1704 JvmtiMethodEventMark jem(thread, mh); | |
1705 JvmtiJavaThreadEventTransition jet(thread); | |
1706 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
1707 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
1708 if (callback != NULL) { | |
1709 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
1710 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
1711 } | |
1712 } | |
1713 } | |
1714 } | |
1715 } | |
1716 | |
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1717 // Returns a record containing inlining information for the given nmethod |
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1718 jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
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1719 jint numstackframes = 0; |
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1720 jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
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1721 record->header.kind = JVMTI_CMLR_INLINE_INFO; |
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1722 record->header.next = NULL; |
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1723 record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
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1724 record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
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1725 record->numpcs = 0; |
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1726 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1727 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1728 record->numpcs++; |
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1729 } |
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1730 record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
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1731 int scope = 0; |
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1732 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1733 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1734 void* pc_address = (void*)p->real_pc(nm); |
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1735 assert(pc_address != NULL, "pc_address must be non-null"); |
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1736 record->pcinfo[scope].pc = pc_address; |
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1737 numstackframes=0; |
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1738 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1739 numstackframes++; |
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1740 } |
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1741 assert(numstackframes != 0, "numstackframes must be nonzero."); |
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1742 record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
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1743 record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
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1744 record->pcinfo[scope].numstackframes = numstackframes; |
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1745 int stackframe = 0; |
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1746 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1747 // 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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1748 assert(sd->method() != NULL, "sd->method() cannot be null."); |
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1749 record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
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1750 record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
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1751 stackframe++; |
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1752 } |
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1753 scope++; |
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1754 } |
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1755 return record; |
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1756 } |
0 | 1757 |
1758 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
1759 JavaThread* thread = JavaThread::current(); | |
1760 | |
1761 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1762 ("JVMTI [%s] method compile load event triggered", | |
1763 JvmtiTrace::safe_get_thread_name(thread))); | |
1764 | |
1765 JvmtiEnvIterator it; | |
1766 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1767 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1768 | |
1769 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1770 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
1771 JvmtiTrace::safe_get_thread_name(thread), | |
1772 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
1773 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
1774 ResourceMark rm(thread); | |
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1775 HandleMark hm(thread); |
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1776 |
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1777 // Add inlining information |
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1778 jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
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1779 // Pass inlining information through the void pointer |
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1780 JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
0 | 1781 JvmtiJavaThreadEventTransition jet(thread); |
1782 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1783 if (callback != NULL) { | |
1784 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
1785 jem.code_size(), jem.code_data(), jem.map_length(), | |
1786 jem.map(), jem.compile_info()); | |
1787 } | |
1788 } | |
1789 } | |
1790 } | |
1791 | |
1792 | |
1793 // post a COMPILED_METHOD_LOAD event for a given environment | |
1794 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
1795 const void *code_begin, const jint map_length, | |
1796 const jvmtiAddrLocationMap* map) | |
1797 { | |
1798 JavaThread* thread = JavaThread::current(); | |
1799 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1800 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
1801 JvmtiTrace::safe_get_thread_name(thread))); | |
1802 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1803 | |
1804 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1805 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
1806 JvmtiTrace::safe_get_thread_name(thread), method)); | |
1807 | |
1808 JvmtiEventMark jem(thread); | |
1809 JvmtiJavaThreadEventTransition jet(thread); | |
1810 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1811 if (callback != NULL) { | |
1812 (*callback)(env->jvmti_external(), method, | |
1813 length, code_begin, map_length, | |
1814 map, NULL); | |
1815 } | |
1816 } | |
1817 } | |
1818 | |
1819 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
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1820 assert(name != NULL && name[0] != '\0', "sanity check"); |
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1821 |
0 | 1822 JavaThread* thread = JavaThread::current(); |
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1823 // In theory everyone coming thru here is in_vm but we need to be certain |
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1824 // because a callee will do a vm->native transition |
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1825 ThreadInVMfromUnknown __tiv; |
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1826 |
0 | 1827 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
1828 ("JVMTI [%s] method dynamic code generated event triggered", | |
1829 JvmtiTrace::safe_get_thread_name(thread))); | |
1830 JvmtiEnvIterator it; | |
1831 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1832 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1833 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1834 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1835 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1836 JvmtiEventMark jem(thread); | |
1837 JvmtiJavaThreadEventTransition jet(thread); | |
1838 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1839 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1840 if (callback != NULL) { | |
1841 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1842 } | |
1843 } | |
1844 } | |
1845 } | |
1846 | |
1847 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
1848 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
1849 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
1850 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
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1851 } else { |
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1852 // It may not be safe to post the event from this thread. Defer all |
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1853 // postings to the service thread so that it can perform them in a safe |
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1854 // context and in-order. |
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1855 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1856 JvmtiDeferredEvent event = JvmtiDeferredEvent::dynamic_code_generated_event( |
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1857 name, code_begin, code_end); |
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1858 JvmtiDeferredEventQueue::enqueue(event); |
0 | 1859 } |
1860 } | |
1861 | |
1862 | |
1863 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
1864 // used by GenerateEvents | |
1865 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
1866 const void *code_begin, const void *code_end) | |
1867 { | |
1868 JavaThread* thread = JavaThread::current(); | |
1869 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1870 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
1871 JvmtiTrace::safe_get_thread_name(thread))); | |
1872 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1873 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1874 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1875 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1876 JvmtiEventMark jem(thread); | |
1877 JvmtiJavaThreadEventTransition jet(thread); | |
1878 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1879 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1880 if (callback != NULL) { | |
1881 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1882 } | |
1883 } | |
1884 } | |
1885 | |
1886 // post a DynamicCodeGenerated event while holding locks in the VM. | |
1887 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
1888 address code_begin, address code_end) | |
1889 { | |
1890 // register the stub with the current dynamic code event collector | |
1891 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
609
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1892 // state can only be NULL if the current thread is exiting which |
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1893 // should not happen since we're trying to post an event |
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1894 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
0 | 1895 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
1896 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
1897 collector->register_stub(name, code_begin, code_end); | |
1898 } | |
1899 | |
1900 // Collect all the vm internally allocated objects which are visible to java world | |
1901 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
1902 Thread* thread = ThreadLocalStorage::thread(); | |
1903 if (thread != NULL && thread->is_Java_thread()) { | |
1904 // Can not take safepoint here. | |
1905 No_Safepoint_Verifier no_sfpt; | |
1906 // Can not take safepoint here so can not use state_for to get | |
1907 // jvmti thread state. | |
1908 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
1909 if (state != NULL ) { | |
1910 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
1911 JvmtiVMObjectAllocEventCollector *collector; | |
1912 collector = state->get_vm_object_alloc_event_collector(); | |
1913 if (collector != NULL && collector->is_enabled()) { | |
1914 // Don't record classes as these will be notified via the ClassLoad | |
1915 // event. | |
1142 | 1916 if (obj->klass() != SystemDictionary::Class_klass()) { |
0 | 1917 collector->record_allocation(obj); |
1918 } | |
1919 } | |
1920 } | |
1921 } | |
1922 } | |
1923 | |
1924 void JvmtiExport::post_garbage_collection_finish() { | |
1925 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
1926 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1927 ("JVMTI [%s] garbage collection finish 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_GARBAGE_COLLECTION_FINISH)) { | |
1932 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1933 ("JVMTI [%s] garbage collection finish event sent ", | |
1934 JvmtiTrace::safe_get_thread_name(thread))); | |
1935 JvmtiThreadEventTransition jet(thread); | |
1936 // JNIEnv is NULL here because this event is posted from VM Thread | |
1937 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
1938 if (callback != NULL) { | |
1939 (*callback)(env->jvmti_external()); | |
1940 } | |
1941 } | |
1942 } | |
1943 } | |
1944 | |
1945 void JvmtiExport::post_garbage_collection_start() { | |
1946 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
1947 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1948 ("JVMTI [%s] garbage collection start event triggered", | |
1949 JvmtiTrace::safe_get_thread_name(thread))); | |
1950 JvmtiEnvIterator it; | |
1951 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1952 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
1953 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1954 ("JVMTI [%s] garbage collection start event sent ", | |
1955 JvmtiTrace::safe_get_thread_name(thread))); | |
1956 JvmtiThreadEventTransition jet(thread); | |
1957 // JNIEnv is NULL here because this event is posted from VM Thread | |
1958 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
1959 if (callback != NULL) { | |
1960 (*callback)(env->jvmti_external()); | |
1961 } | |
1962 } | |
1963 } | |
1964 } | |
1965 | |
1966 void JvmtiExport::post_data_dump() { | |
1967 Thread *thread = Thread::current(); | |
1968 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1969 ("JVMTI [%s] data dump request event triggered", | |
1970 JvmtiTrace::safe_get_thread_name(thread))); | |
1971 JvmtiEnvIterator it; | |
1972 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1973 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
1974 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1975 ("JVMTI [%s] data dump request event sent ", | |
1976 JvmtiTrace::safe_get_thread_name(thread))); | |
1977 JvmtiThreadEventTransition jet(thread); | |
1978 // JNIEnv is NULL here because this event is posted from VM Thread | |
1979 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
1980 if (callback != NULL) { | |
1981 (*callback)(env->jvmti_external()); | |
1982 } | |
1983 } | |
1984 } | |
1985 } | |
1986 | |
1987 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
1988 oop object = (oop)obj_mntr->object(); | |
1989 if (!ServiceUtil::visible_oop(object)) { | |
1990 // Ignore monitor contended enter for vm internal object. | |
1991 return; | |
1992 } | |
1993 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1994 if (state == NULL) { | |
1995 return; | |
1996 } | |
1997 | |
1998 HandleMark hm(thread); | |
1999 Handle h(thread, object); | |
2000 | |
2001 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2002 ("JVMTI [%s] montior contended enter event triggered", | |
2003 JvmtiTrace::safe_get_thread_name(thread))); | |
2004 | |
2005 JvmtiEnvThreadStateIterator it(state); | |
2006 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2007 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
2008 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2009 ("JVMTI [%s] monitor contended enter event sent", | |
2010 JvmtiTrace::safe_get_thread_name(thread))); | |
2011 JvmtiMonitorEventMark jem(thread, h()); | |
2012 JvmtiEnv *env = ets->get_env(); | |
2013 JvmtiThreadEventTransition jet(thread); | |
2014 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
2015 if (callback != NULL) { | |
2016 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2017 } | |
2018 } | |
2019 } | |
2020 } | |
2021 | |
2022 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
2023 oop object = (oop)obj_mntr->object(); | |
2024 if (!ServiceUtil::visible_oop(object)) { | |
2025 // Ignore monitor contended entered for vm internal object. | |
2026 return; | |
2027 } | |
2028 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2029 if (state == NULL) { | |
2030 return; | |
2031 } | |
2032 | |
2033 HandleMark hm(thread); | |
2034 Handle h(thread, object); | |
2035 | |
2036 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2037 ("JVMTI [%s] montior contended entered event triggered", | |
2038 JvmtiTrace::safe_get_thread_name(thread))); | |
2039 | |
2040 JvmtiEnvThreadStateIterator it(state); | |
2041 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2042 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
2043 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2044 ("JVMTI [%s] monitor contended enter event sent", | |
2045 JvmtiTrace::safe_get_thread_name(thread))); | |
2046 JvmtiMonitorEventMark jem(thread, h()); | |
2047 JvmtiEnv *env = ets->get_env(); | |
2048 JvmtiThreadEventTransition jet(thread); | |
2049 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
2050 if (callback != NULL) { | |
2051 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2052 } | |
2053 } | |
2054 } | |
2055 } | |
2056 | |
2057 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
2058 jlong timeout) { | |
2059 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2060 if (state == NULL) { | |
2061 return; | |
2062 } | |
2063 | |
2064 HandleMark hm(thread); | |
2065 Handle h(thread, object); | |
2066 | |
2067 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2068 ("JVMTI [%s] montior wait event triggered", | |
2069 JvmtiTrace::safe_get_thread_name(thread))); | |
2070 | |
2071 JvmtiEnvThreadStateIterator it(state); | |
2072 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2073 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
2074 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2075 ("JVMTI [%s] monitor wait event sent ", | |
2076 JvmtiTrace::safe_get_thread_name(thread))); | |
2077 JvmtiMonitorEventMark jem(thread, h()); | |
2078 JvmtiEnv *env = ets->get_env(); | |
2079 JvmtiThreadEventTransition jet(thread); | |
2080 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
2081 if (callback != NULL) { | |
2082 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2083 jem.jni_object(), timeout); | |
2084 } | |
2085 } | |
2086 } | |
2087 } | |
2088 | |
2089 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
2090 oop object = (oop)obj_mntr->object(); | |
2091 if (!ServiceUtil::visible_oop(object)) { | |
2092 // Ignore monitor waited for vm internal object. | |
2093 return; | |
2094 } | |
2095 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2096 if (state == NULL) { | |
2097 return; | |
2098 } | |
2099 | |
2100 HandleMark hm(thread); | |
2101 Handle h(thread, object); | |
2102 | |
2103 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2104 ("JVMTI [%s] montior waited event triggered", | |
2105 JvmtiTrace::safe_get_thread_name(thread))); | |
2106 | |
2107 JvmtiEnvThreadStateIterator it(state); | |
2108 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2109 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
2110 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2111 ("JVMTI [%s] monitor waited event sent ", | |
2112 JvmtiTrace::safe_get_thread_name(thread))); | |
2113 JvmtiMonitorEventMark jem(thread, h()); | |
2114 JvmtiEnv *env = ets->get_env(); | |
2115 JvmtiThreadEventTransition jet(thread); | |
2116 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
2117 if (callback != NULL) { | |
2118 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2119 jem.jni_object(), timed_out); | |
2120 } | |
2121 } | |
2122 } | |
2123 } | |
2124 | |
2125 | |
2126 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
2127 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
2128 JvmtiTrace::safe_get_thread_name(thread))); | |
2129 if (object == NULL) { | |
2130 return; | |
2131 } | |
2132 HandleMark hm(thread); | |
2133 Handle h(thread, object); | |
2134 JvmtiEnvIterator it; | |
2135 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2136 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
2137 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
2138 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 2139 object==NULL? "NULL" : java_lang_Class::as_Klass(object)->external_name())); |
0 | 2140 |
2141 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
2142 JvmtiJavaThreadEventTransition jet(thread); | |
2143 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
2144 if (callback != NULL) { | |
2145 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2146 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
2147 } | |
2148 } | |
2149 } | |
2150 } | |
2151 | |
2152 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2153 | |
2154 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
2155 assert(JavaThread::current() == thread, "thread is not current"); | |
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2156 MutexLocker mu(JvmtiThreadState_lock); |
0 | 2157 |
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2158 if (thread->jvmti_thread_state() != NULL) { |
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2159 // This has to happen after the thread state is removed, which is |
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2160 // why it is not in post_thread_end_event like its complement |
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2161 // Maybe both these functions should be rolled into the posts? |
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2162 JvmtiEventController::thread_ended(thread); |
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2163 } |
0 | 2164 } |
2165 | |
2166 void JvmtiExport::oops_do(OopClosure* f) { | |
2167 JvmtiCurrentBreakpoints::oops_do(f); | |
2168 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
2169 } | |
2170 | |
2147
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2171 void JvmtiExport::weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f) { |
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2172 JvmtiTagMap::weak_oops_do(is_alive, f); |
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2173 } |
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2174 |
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2175 void JvmtiExport::gc_epilogue() { |
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2176 JvmtiCurrentBreakpoints::gc_epilogue(); |
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2177 } |
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2178 |
0 | 2179 // Onload raw monitor transition. |
2180 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
2181 JvmtiPendingMonitors::transition_raw_monitors(); | |
2182 } | |
2183 | |
2184 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2185 | |
2186 // type for the Agent_OnAttach entry point | |
2187 extern "C" { | |
2188 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
2189 } | |
2190 | |
2191 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
2192 char ebuf[1024]; | |
2193 char buffer[JVM_MAXPATHLEN]; | |
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2194 void* library = NULL; |
0 | 2195 jint result = JNI_ERR; |
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2196 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; |
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2197 size_t num_symbol_entries = ARRAY_SIZE(on_attach_symbols); |
0 | 2198 |
2199 // get agent name and options | |
2200 const char* agent = op->arg(0); | |
2201 const char* absParam = op->arg(1); | |
2202 const char* options = op->arg(2); | |
2203 | |
2204 // The abs paramter should be "true" or "false" | |
2205 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
2206 | |
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2207 // Initially marked as invalid. It will be set to valid if we can find the agent |
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2208 AgentLibrary *agent_lib = new AgentLibrary(agent, options, is_absolute_path, NULL); |
0 | 2209 |
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2210 // Check for statically linked in agent. If not found then if the path is |
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2211 // absolute we attempt to load the library. Otherwise we try to load it |
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2212 // from the standard dll directory. |
0 | 2213 |
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2214 if (!os::find_builtin_agent(agent_lib, on_attach_symbols, num_symbol_entries)) { |
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2215 if (is_absolute_path) { |
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2216 library = os::dll_load(agent, ebuf, sizeof ebuf); |
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2217 } else { |
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2218 // Try to load the agent from the standard dll directory |
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2219 if (os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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2220 agent)) { |
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2221 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2222 } |
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2223 if (library == NULL) { |
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2224 // not found - try local path |
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2225 char ns[1] = {0}; |
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2226 if (os::dll_build_name(buffer, sizeof(buffer), ns, agent)) { |
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2227 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2228 } |
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2229 } |
0 | 2230 } |
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2231 if (library != NULL) { |
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2232 agent_lib->set_os_lib(library); |
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2233 agent_lib->set_valid(); |
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2234 } |
0 | 2235 } |
2236 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
2237 // function | |
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2238 if (agent_lib->valid()) { |
0 | 2239 // Lookup the Agent_OnAttach function |
2240 OnAttachEntry_t on_attach_entry = NULL; | |
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2241 on_attach_entry = CAST_TO_FN_PTR(OnAttachEntry_t, |
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2242 os::find_agent_function(agent_lib, false, on_attach_symbols, num_symbol_entries)); |
0 | 2243 if (on_attach_entry == NULL) { |
2244 // Agent_OnAttach missing - unload library | |
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2245 if (!agent_lib->is_static_lib()) { |
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2246 os::dll_unload(library); |
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2247 } |
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2248 delete agent_lib; |
0 | 2249 } else { |
2250 // Invoke the Agent_OnAttach function | |
2251 JavaThread* THREAD = JavaThread::current(); | |
2252 { | |
2253 extern struct JavaVM_ main_vm; | |
2254 JvmtiThreadEventMark jem(THREAD); | |
2255 JvmtiJavaThreadEventTransition jet(THREAD); | |
2256 | |
2257 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
2258 } | |
2259 | |
2260 // Agent_OnAttach may have used JNI | |
2261 if (HAS_PENDING_EXCEPTION) { | |
2262 CLEAR_PENDING_EXCEPTION; | |
2263 } | |
2264 | |
2265 // If OnAttach returns JNI_OK then we add it to the list of | |
2266 // agent libraries so that we can call Agent_OnUnload later. | |
2267 if (result == JNI_OK) { | |
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2268 Arguments::add_loaded_agent(agent_lib); |
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2269 } else { |
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2270 delete agent_lib; |
0 | 2271 } |
2272 | |
2273 // Agent_OnAttach executed so completion status is JNI_OK | |
2274 st->print_cr("%d", result); | |
2275 result = JNI_OK; | |
2276 } | |
2277 } | |
2278 return result; | |
2279 } | |
2280 | |
2281 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2282 | |
2283 // Setup current current thread for event collection. | |
2284 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
2285 // set this event collector to be the current one. | |
2286 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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2287 // state can only be NULL if the current thread is exiting which |
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2288 // should not happen since we're trying to configure for event collection |
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2289 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
0 | 2290 if (is_vm_object_alloc_event()) { |
2291 _prev = state->get_vm_object_alloc_event_collector(); | |
2292 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
2293 } else if (is_dynamic_code_event()) { | |
2294 _prev = state->get_dynamic_code_event_collector(); | |
2295 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
2296 } | |
2297 } | |
2298 | |
2299 // Unset current event collection in this thread and reset it with previous | |
2300 // collector. | |
2301 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
2302 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
2303 if (state != NULL) { | |
2304 // restore the previous event collector (if any) | |
2305 if (is_vm_object_alloc_event()) { | |
2306 if (state->get_vm_object_alloc_event_collector() == this) { | |
2307 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
2308 } else { | |
2309 // this thread's jvmti state was created during the scope of | |
2310 // the event collector. | |
2311 } | |
2312 } else { | |
2313 if (is_dynamic_code_event()) { | |
2314 if (state->get_dynamic_code_event_collector() == this) { | |
2315 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
2316 } else { | |
2317 // this thread's jvmti state was created during the scope of | |
2318 // the event collector. | |
2319 } | |
2320 } | |
2321 } | |
2322 } | |
2323 } | |
2324 | |
2325 // create the dynamic code event collector | |
2326 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
2327 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
2328 setup_jvmti_thread_state(); | |
2329 } | |
2330 } | |
2331 | |
2332 // iterate over any code blob descriptors collected and post a | |
2333 // DYNAMIC_CODE_GENERATED event to the profiler. | |
2334 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
2335 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
2336 // iterate over any code blob descriptors that we collected | |
2337 if (_code_blobs != NULL) { | |
2338 for (int i=0; i<_code_blobs->length(); i++) { | |
2339 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
2340 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
2341 FreeHeap(blob); | |
2342 } | |
2343 delete _code_blobs; | |
2344 } | |
2345 unset_jvmti_thread_state(); | |
2346 } | |
2347 | |
2348 // register a stub | |
2349 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
2350 if (_code_blobs == NULL) { | |
6197 | 2351 _code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(1,true); |
0 | 2352 } |
2353 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
2354 } | |
2355 | |
2356 // Setup current thread to record vm allocated objects. | |
2357 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
2358 if (JvmtiExport::should_post_vm_object_alloc()) { | |
2359 _enable = true; | |
2360 setup_jvmti_thread_state(); | |
2361 } else { | |
2362 _enable = false; | |
2363 } | |
2364 } | |
2365 | |
2366 // Post vm_object_alloc event for vm allocated objects visible to java | |
2367 // world. | |
2368 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
2369 if (_allocated != NULL) { | |
2370 set_enabled(false); | |
2371 for (int i = 0; i < _allocated->length(); i++) { | |
2372 oop obj = _allocated->at(i); | |
2373 if (ServiceUtil::visible_oop(obj)) { | |
2374 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
2375 } | |
2376 } | |
2377 delete _allocated; | |
2378 } | |
2379 unset_jvmti_thread_state(); | |
2380 } | |
2381 | |
2382 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
2383 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
2384 if (_allocated == NULL) { | |
6197 | 2385 _allocated = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<oop>(1, true); |
0 | 2386 } |
2387 _allocated->push(obj); | |
2388 } | |
2389 | |
2390 // GC support. | |
2391 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
2392 if (_allocated != NULL) { | |
2393 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
2394 if (_allocated->at(i) != NULL) { | |
2395 f->do_oop(_allocated->adr_at(i)); | |
2396 } | |
2397 } | |
2398 } | |
2399 } | |
2400 | |
2401 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
2402 // no-op if jvmti not enabled | |
2403 if (!JvmtiEnv::environments_might_exist()) { | |
2404 return; | |
2405 } | |
2406 | |
2407 // Runs at safepoint. So no need to acquire Threads_lock. | |
2408 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
2409 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
2410 if (state != NULL) { | |
2411 JvmtiVMObjectAllocEventCollector *collector; | |
2412 collector = state->get_vm_object_alloc_event_collector(); | |
2413 while (collector != NULL) { | |
2414 collector->oops_do(f); | |
2415 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
2416 } | |
2417 } | |
2418 } | |
2419 } | |
2420 | |
2421 | |
2422 // Disable collection of VMObjectAlloc events | |
2423 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
2424 // a no-op if VMObjectAlloc event is not enabled | |
2425 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
2426 return; | |
2427 } | |
2428 Thread* thread = ThreadLocalStorage::thread(); | |
2429 if (thread != NULL && thread->is_Java_thread()) { | |
2430 JavaThread* current_thread = (JavaThread*)thread; | |
2431 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
2432 if (state != NULL) { | |
2433 JvmtiVMObjectAllocEventCollector *collector; | |
2434 collector = state->get_vm_object_alloc_event_collector(); | |
2435 if (collector != NULL && collector->is_enabled()) { | |
2436 _collector = collector; | |
2437 _collector->set_enabled(false); | |
2438 } | |
2439 } | |
2440 } | |
2441 } | |
2442 | |
2443 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
2444 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
2445 if (was_enabled()) { | |
2446 _collector->set_enabled(true); | |
2447 } | |
2448 }; | |
2449 | |
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2450 JvmtiGCMarker::JvmtiGCMarker() { |
0 | 2451 // if there aren't any JVMTI environments then nothing to do |
2452 if (!JvmtiEnv::environments_might_exist()) { | |
2453 return; | |
2454 } | |
2455 | |
2456 if (JvmtiExport::should_post_garbage_collection_start()) { | |
2457 JvmtiExport::post_garbage_collection_start(); | |
2458 } | |
2459 | |
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2460 if (SafepointSynchronize::is_at_safepoint()) { |
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2461 // Do clean up tasks that need to be done at a safepoint |
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2462 JvmtiEnvBase::check_for_periodic_clean_up(); |
0 | 2463 } |
2464 } | |
2465 | |
2466 JvmtiGCMarker::~JvmtiGCMarker() { | |
2467 // if there aren't any JVMTI environments then nothing to do | |
2468 if (!JvmtiEnv::environments_might_exist()) { | |
2469 return; | |
2470 } | |
2471 | |
2472 // JVMTI notify gc finish | |
2473 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
2474 JvmtiExport::post_garbage_collection_finish(); | |
2475 } | |
2476 } |