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annotate src/share/vm/prims/jvmtiExport.cpp @ 11722:ff05c78a7f64
use time passed to decide what methods to compile or inline
author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 19 Sep 2013 10:36:56 +0200 |
parents | 825e6cb66923 |
children | f92b82d454fa |
rev | line source |
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0 | 1 /* |
7951 | 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "code/nmethod.hpp" | |
28 #include "code/pcDesc.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "interpreter/interpreter.hpp" | |
31 #include "jvmtifiles/jvmtiEnv.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/objArrayOop.hpp" | |
35 #include "prims/jvmtiCodeBlobEvents.hpp" | |
36 #include "prims/jvmtiEventController.hpp" | |
37 #include "prims/jvmtiEventController.inline.hpp" | |
38 #include "prims/jvmtiExport.hpp" | |
39 #include "prims/jvmtiImpl.hpp" | |
40 #include "prims/jvmtiManageCapabilities.hpp" | |
41 #include "prims/jvmtiRawMonitor.hpp" | |
42 #include "prims/jvmtiTagMap.hpp" | |
43 #include "prims/jvmtiThreadState.inline.hpp" | |
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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" | |
50 #include "runtime/thread.hpp" | |
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 |
59 #ifdef JVMTI_TRACE | |
60 #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
61 #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
62 #else | |
63 #define EVT_TRIG_TRACE(evt,out) | |
64 #define EVT_TRACE(evt,out) | |
65 #endif | |
66 | |
67 /////////////////////////////////////////////////////////////// | |
68 // | |
69 // JvmtiEventTransition | |
70 // | |
71 // TO DO -- | |
72 // more handle purging | |
73 | |
74 // Use this for JavaThreads and state is _thread_in_vm. | |
75 class JvmtiJavaThreadEventTransition : StackObj { | |
76 private: | |
77 ResourceMark _rm; | |
78 ThreadToNativeFromVM _transition; | |
79 HandleMark _hm; | |
80 | |
81 public: | |
82 JvmtiJavaThreadEventTransition(JavaThread *thread) : | |
83 _rm(), | |
84 _transition(thread), | |
85 _hm(thread) {}; | |
86 }; | |
87 | |
88 // For JavaThreads which are not in _thread_in_vm state | |
89 // and other system threads use this. | |
90 class JvmtiThreadEventTransition : StackObj { | |
91 private: | |
92 ResourceMark _rm; | |
93 HandleMark _hm; | |
94 JavaThreadState _saved_state; | |
95 JavaThread *_jthread; | |
96 | |
97 public: | |
98 JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { | |
99 if (thread->is_Java_thread()) { | |
100 _jthread = (JavaThread *)thread; | |
101 _saved_state = _jthread->thread_state(); | |
102 if (_saved_state == _thread_in_Java) { | |
103 ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); | |
104 } else { | |
105 ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); | |
106 } | |
107 } else { | |
108 _jthread = NULL; | |
109 } | |
110 } | |
111 | |
112 ~JvmtiThreadEventTransition() { | |
113 if (_jthread != NULL) | |
114 ThreadStateTransition::transition_from_native(_jthread, _saved_state); | |
115 } | |
116 }; | |
117 | |
118 | |
119 /////////////////////////////////////////////////////////////// | |
120 // | |
121 // JvmtiEventMark | |
122 // | |
123 | |
124 class JvmtiEventMark : public StackObj { | |
125 private: | |
126 JavaThread *_thread; | |
127 JNIEnv* _jni_env; | |
128 bool _exception_detected; | |
129 bool _exception_caught; | |
130 #if 0 | |
131 JNIHandleBlock* _hblock; | |
132 #endif | |
133 | |
134 public: | |
135 JvmtiEventMark(JavaThread *thread) : _thread(thread), | |
136 _jni_env(thread->jni_environment()) { | |
137 #if 0 | |
138 _hblock = thread->active_handles(); | |
139 _hblock->clear_thoroughly(); // so we can be safe | |
140 #else | |
141 // we want to use the code above - but that needs the JNIHandle changes - later... | |
142 // for now, steal JNI push local frame code | |
143 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
144 // we are before an event. | |
145 // Save current jvmti thread exception state. | |
146 if (state != NULL) { | |
147 _exception_detected = state->is_exception_detected(); | |
148 _exception_caught = state->is_exception_caught(); | |
149 } else { | |
150 _exception_detected = false; | |
151 _exception_caught = false; | |
152 } | |
153 | |
154 JNIHandleBlock* old_handles = thread->active_handles(); | |
155 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
156 assert(new_handles != NULL, "should not be NULL"); | |
157 new_handles->set_pop_frame_link(old_handles); | |
158 thread->set_active_handles(new_handles); | |
159 #endif | |
160 assert(thread == JavaThread::current(), "thread must be current!"); | |
161 thread->frame_anchor()->make_walkable(thread); | |
162 }; | |
163 | |
164 ~JvmtiEventMark() { | |
165 #if 0 | |
166 _hblock->clear(); // for consistency with future correct behavior | |
167 #else | |
168 // we want to use the code above - but that needs the JNIHandle changes - later... | |
169 // for now, steal JNI pop local frame code | |
170 JNIHandleBlock* old_handles = _thread->active_handles(); | |
171 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); | |
172 assert(new_handles != NULL, "should not be NULL"); | |
173 _thread->set_active_handles(new_handles); | |
174 // Note that we set the pop_frame_link to NULL explicitly, otherwise | |
175 // the release_block call will release the blocks. | |
176 old_handles->set_pop_frame_link(NULL); | |
177 JNIHandleBlock::release_block(old_handles, _thread); // may block | |
178 #endif | |
179 | |
180 JvmtiThreadState* state = _thread->jvmti_thread_state(); | |
181 // we are continuing after an event. | |
182 if (state != NULL) { | |
183 // Restore the jvmti thread exception state. | |
184 if (_exception_detected) { | |
185 state->set_exception_detected(); | |
186 } | |
187 if (_exception_caught) { | |
188 state->set_exception_caught(); | |
189 } | |
190 } | |
191 } | |
192 | |
193 #if 0 | |
194 jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } | |
195 #else | |
196 // we want to use the code above - but that needs the JNIHandle changes - later... | |
197 // for now, use regular make_local | |
198 jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } | |
199 #endif | |
200 | |
6983 | 201 jclass to_jclass(Klass* klass) { return (klass == NULL ? NULL : (jclass)to_jobject(klass->java_mirror())); } |
0 | 202 |
203 jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } | |
204 | |
205 JNIEnv* jni_env() { return _jni_env; } | |
206 }; | |
207 | |
208 class JvmtiThreadEventMark : public JvmtiEventMark { | |
209 private: | |
210 jthread _jt; | |
211 | |
212 public: | |
213 JvmtiThreadEventMark(JavaThread *thread) : | |
214 JvmtiEventMark(thread) { | |
215 _jt = (jthread)(to_jobject(thread->threadObj())); | |
216 }; | |
217 jthread jni_thread() { return _jt; } | |
218 }; | |
219 | |
220 class JvmtiClassEventMark : public JvmtiThreadEventMark { | |
221 private: | |
222 jclass _jc; | |
223 | |
224 public: | |
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225 JvmtiClassEventMark(JavaThread *thread, Klass* klass) : |
0 | 226 JvmtiThreadEventMark(thread) { |
227 _jc = to_jclass(klass); | |
228 }; | |
229 jclass jni_class() { return _jc; } | |
230 }; | |
231 | |
232 class JvmtiMethodEventMark : public JvmtiThreadEventMark { | |
233 private: | |
234 jmethodID _mid; | |
235 | |
236 public: | |
237 JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : | |
238 JvmtiThreadEventMark(thread), | |
239 _mid(to_jmethodID(method)) {}; | |
240 jmethodID jni_methodID() { return _mid; } | |
241 }; | |
242 | |
243 class JvmtiLocationEventMark : public JvmtiMethodEventMark { | |
244 private: | |
245 jlocation _loc; | |
246 | |
247 public: | |
248 JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : | |
249 JvmtiMethodEventMark(thread, method), | |
250 _loc(location - method->code_base()) {}; | |
251 jlocation location() { return _loc; } | |
252 }; | |
253 | |
254 class JvmtiExceptionEventMark : public JvmtiLocationEventMark { | |
255 private: | |
256 jobject _exc; | |
257 | |
258 public: | |
259 JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : | |
260 JvmtiLocationEventMark(thread, method, location), | |
261 _exc(to_jobject(exception())) {}; | |
262 jobject exception() { return _exc; } | |
263 }; | |
264 | |
265 class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { | |
266 private: | |
267 const char *_class_name; | |
268 jobject _jloader; | |
269 jobject _protection_domain; | |
270 jclass _class_being_redefined; | |
271 | |
272 public: | |
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273 JvmtiClassFileLoadEventMark(JavaThread *thread, Symbol* name, |
0 | 274 Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { |
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275 _class_name = name != NULL? name->as_utf8() : NULL; |
0 | 276 _jloader = (jobject)to_jobject(class_loader()); |
277 _protection_domain = (jobject)to_jobject(prot_domain()); | |
278 if (class_being_redefined == NULL) { | |
279 _class_being_redefined = NULL; | |
280 } else { | |
281 _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); | |
282 } | |
283 }; | |
284 const char *class_name() { | |
285 return _class_name; | |
286 } | |
287 jobject jloader() { | |
288 return _jloader; | |
289 } | |
290 jobject protection_domain() { | |
291 return _protection_domain; | |
292 } | |
293 jclass class_being_redefined() { | |
294 return _class_being_redefined; | |
295 } | |
296 }; | |
297 | |
298 ////////////////////////////////////////////////////////////////////////////// | |
299 | |
300 int JvmtiExport::_field_access_count = 0; | |
301 int JvmtiExport::_field_modification_count = 0; | |
302 | |
303 bool JvmtiExport::_can_access_local_variables = false; | |
304 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
305 bool JvmtiExport::_can_modify_any_class = false; | |
306 bool JvmtiExport::_can_walk_any_space = false; | |
307 | |
308 bool JvmtiExport::_has_redefined_a_class = false; | |
309 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
310 | |
311 // | |
312 // field access management | |
313 // | |
314 | |
315 // interpreter generator needs the address of the counter | |
316 address JvmtiExport::get_field_access_count_addr() { | |
317 // We don't grab a lock because we don't want to | |
318 // serialize field access between all threads. This means that a | |
319 // thread on another processor can see the wrong count value and | |
320 // may either miss making a needed call into post_field_access() | |
321 // or will make an unneeded call into post_field_access(). We pay | |
322 // this price to avoid slowing down the VM when we aren't watching | |
323 // field accesses. | |
324 // Other access/mutation safe by virtue of being in VM state. | |
325 return (address)(&_field_access_count); | |
326 } | |
327 | |
328 // | |
329 // field modification management | |
330 // | |
331 | |
332 // interpreter generator needs the address of the counter | |
333 address JvmtiExport::get_field_modification_count_addr() { | |
334 // We don't grab a lock because we don't | |
335 // want to serialize field modification between all threads. This | |
336 // means that a thread on another processor can see the wrong | |
337 // count value and may either miss making a needed call into | |
338 // post_field_modification() or will make an unneeded call into | |
339 // post_field_modification(). We pay this price to avoid slowing | |
340 // down the VM when we aren't watching field modifications. | |
341 // Other access/mutation safe by virtue of being in VM state. | |
342 return (address)(&_field_modification_count); | |
343 } | |
344 | |
345 | |
346 /////////////////////////////////////////////////////////////// | |
347 // Functions needed by java.lang.instrument for starting up javaagent. | |
348 /////////////////////////////////////////////////////////////// | |
349 | |
350 jint | |
351 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
1121 | 352 // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
353 // has already been validated in JNI GetEnv(). | |
354 int major, minor, micro; | |
355 | |
356 // micro version doesn't matter here (yet?) | |
357 decode_version_values(version, &major, &minor, µ); | |
358 switch (major) { | |
1988 | 359 case 1: |
1121 | 360 switch (minor) { |
1988 | 361 case 0: // version 1.0.<micro> is recognized |
362 case 1: // version 1.1.<micro> is recognized | |
363 case 2: // version 1.2.<micro> is recognized | |
1121 | 364 break; |
365 | |
1988 | 366 default: |
1121 | 367 return JNI_EVERSION; // unsupported minor version number |
368 } | |
369 break; | |
1988 | 370 default: |
1121 | 371 return JNI_EVERSION; // unsupported major version number |
372 } | |
0 | 373 |
374 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
375 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
376 // transition code: native to VM | |
377 ThreadInVMfromNative __tiv(current_thread); | |
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378 VM_ENTRY_BASE(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) |
0 | 379 debug_only(VMNativeEntryWrapper __vew;) |
380 | |
1121 | 381 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 382 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
383 return JNI_OK; | |
384 | |
385 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
386 // not live, no thread to transition | |
1121 | 387 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 388 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
389 return JNI_OK; | |
390 | |
391 } else { | |
392 // Called at the wrong time | |
393 *penv = NULL; | |
394 return JNI_EDETACHED; | |
395 } | |
396 } | |
397 | |
1121 | 398 |
399 void | |
400 JvmtiExport::decode_version_values(jint version, int * major, int * minor, | |
401 int * micro) { | |
402 *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; | |
403 *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; | |
404 *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; | |
405 } | |
406 | |
0 | 407 void JvmtiExport::enter_primordial_phase() { |
408 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
409 } | |
410 | |
411 void JvmtiExport::enter_start_phase() { | |
412 JvmtiManageCapabilities::recompute_always_capabilities(); | |
413 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
414 } | |
415 | |
416 void JvmtiExport::enter_onload_phase() { | |
417 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
418 } | |
419 | |
420 void JvmtiExport::enter_live_phase() { | |
421 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
422 } | |
423 | |
424 // | |
425 // JVMTI events that the VM posts to the debugger and also startup agent | |
426 // and call the agent's premain() for java.lang.instrument. | |
427 // | |
428 | |
429 void JvmtiExport::post_vm_start() { | |
430 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
431 | |
432 // can now enable some events | |
433 JvmtiEventController::vm_start(); | |
434 | |
435 JvmtiEnvIterator it; | |
436 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
437 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
438 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
439 | |
440 JavaThread *thread = JavaThread::current(); | |
441 JvmtiThreadEventMark jem(thread); | |
442 JvmtiJavaThreadEventTransition jet(thread); | |
443 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
444 if (callback != NULL) { | |
445 (*callback)(env->jvmti_external(), jem.jni_env()); | |
446 } | |
447 } | |
448 } | |
449 } | |
450 | |
451 | |
452 void JvmtiExport::post_vm_initialized() { | |
453 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
454 | |
455 // can now enable events | |
456 JvmtiEventController::vm_init(); | |
457 | |
458 JvmtiEnvIterator it; | |
459 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
460 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
461 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
462 | |
463 JavaThread *thread = JavaThread::current(); | |
464 JvmtiThreadEventMark jem(thread); | |
465 JvmtiJavaThreadEventTransition jet(thread); | |
466 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
467 if (callback != NULL) { | |
468 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
469 } | |
470 } | |
471 } | |
472 } | |
473 | |
474 | |
475 void JvmtiExport::post_vm_death() { | |
476 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
477 | |
478 JvmtiEnvIterator it; | |
479 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
480 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
481 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
482 | |
483 JavaThread *thread = JavaThread::current(); | |
484 JvmtiEventMark jem(thread); | |
485 JvmtiJavaThreadEventTransition jet(thread); | |
486 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
487 if (callback != NULL) { | |
488 (*callback)(env->jvmti_external(), jem.jni_env()); | |
489 } | |
490 } | |
491 } | |
492 | |
493 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
494 JvmtiEventController::vm_death(); | |
495 } | |
496 | |
497 char** | |
498 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
499 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
500 // go away while we iterate them. No locks during VM bring-up. | |
501 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
502 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
503 } else { | |
504 MutexLocker mu(JvmtiThreadState_lock); | |
505 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
506 } | |
507 } | |
508 | |
509 class JvmtiClassFileLoadHookPoster : public StackObj { | |
510 private: | |
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511 Symbol* _h_name; |
0 | 512 Handle _class_loader; |
513 Handle _h_protection_domain; | |
514 unsigned char ** _data_ptr; | |
515 unsigned char ** _end_ptr; | |
516 JavaThread * _thread; | |
517 jint _curr_len; | |
518 unsigned char * _curr_data; | |
519 JvmtiEnv * _curr_env; | |
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520 JvmtiCachedClassFileData ** _cached_class_file_ptr; |
0 | 521 JvmtiThreadState * _state; |
522 KlassHandle * _h_class_being_redefined; | |
523 JvmtiClassLoadKind _load_kind; | |
524 | |
525 public: | |
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526 inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
0 | 527 Handle h_protection_domain, |
528 unsigned char **data_ptr, unsigned char **end_ptr, | |
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529 JvmtiCachedClassFileData **cache_ptr) { |
0 | 530 _h_name = h_name; |
531 _class_loader = class_loader; | |
532 _h_protection_domain = h_protection_domain; | |
533 _data_ptr = data_ptr; | |
534 _end_ptr = end_ptr; | |
535 _thread = JavaThread::current(); | |
536 _curr_len = *end_ptr - *data_ptr; | |
537 _curr_data = *data_ptr; | |
538 _curr_env = NULL; | |
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539 _cached_class_file_ptr = cache_ptr; |
0 | 540 |
541 _state = _thread->jvmti_thread_state(); | |
542 if (_state != NULL) { | |
543 _h_class_being_redefined = _state->get_class_being_redefined(); | |
544 _load_kind = _state->get_class_load_kind(); | |
545 // Clear class_being_redefined flag here. The action | |
546 // from agent handler could generate a new class file load | |
547 // hook event and if it is not cleared the new event generated | |
548 // from regular class file load could have this stale redefined | |
549 // class handle info. | |
550 _state->clear_class_being_redefined(); | |
551 } else { | |
552 // redefine and retransform will always set the thread state | |
553 _h_class_being_redefined = (KlassHandle *) NULL; | |
554 _load_kind = jvmti_class_load_kind_load; | |
555 } | |
556 } | |
557 | |
558 void post() { | |
559 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
560 // ("JVMTI [%s] class file load hook event triggered", | |
561 // JvmtiTrace::safe_get_thread_name(_thread))); | |
562 post_all_envs(); | |
563 copy_modified_data(); | |
564 } | |
565 | |
566 private: | |
567 void post_all_envs() { | |
568 if (_load_kind != jvmti_class_load_kind_retransform) { | |
569 // for class load and redefine, | |
570 // call the non-retransformable agents | |
571 JvmtiEnvIterator it; | |
572 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
573 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
574 // non-retransformable agents cannot retransform back, | |
575 // so no need to cache the original class file bytes | |
576 post_to_env(env, false); | |
577 } | |
578 } | |
579 } | |
580 JvmtiEnvIterator it; | |
581 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
582 // retransformable agents get all events | |
583 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
584 // retransformable agents need to cache the original class file | |
585 // bytes if changes are made via the ClassFileLoadHook | |
586 post_to_env(env, true); | |
587 } | |
588 } | |
589 } | |
590 | |
591 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
592 unsigned char *new_data = NULL; | |
593 jint new_len = 0; | |
594 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
595 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
596 // JvmtiTrace::safe_get_thread_name(_thread), | |
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597 // _h_name == NULL ? "NULL" : _h_name->as_utf8(), |
0 | 598 // _curr_data, _curr_len )); |
599 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
600 _h_protection_domain, | |
601 _h_class_being_redefined); | |
602 JvmtiJavaThreadEventTransition jet(_thread); | |
603 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
604 NULL : jem.jni_env(); | |
605 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
606 if (callback != NULL) { | |
607 (*callback)(env->jvmti_external(), jni_env, | |
608 jem.class_being_redefined(), | |
609 jem.jloader(), jem.class_name(), | |
610 jem.protection_domain(), | |
611 _curr_len, _curr_data, | |
612 &new_len, &new_data); | |
613 } | |
614 if (new_data != NULL) { | |
615 // this agent has modified class data. | |
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616 if (caching_needed && *_cached_class_file_ptr == NULL) { |
0 | 617 // data has been changed by the new retransformable agent |
618 // and it hasn't already been cached, cache it | |
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619 JvmtiCachedClassFileData *p; |
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620 p = (JvmtiCachedClassFileData *)os::malloc( |
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621 offset_of(JvmtiCachedClassFileData, data) + _curr_len, mtInternal); |
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622 if (p == NULL) { |
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623 vm_exit_out_of_memory(offset_of(JvmtiCachedClassFileData, data) + _curr_len, |
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624 OOM_MALLOC_ERROR, |
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625 "unable to allocate cached copy of original class bytes"); |
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626 } |
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627 p->length = _curr_len; |
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628 memcpy(p->data, _curr_data, _curr_len); |
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629 *_cached_class_file_ptr = p; |
0 | 630 } |
631 | |
632 if (_curr_data != *_data_ptr) { | |
633 // curr_data is previous agent modified class data. | |
634 // And this has been changed by the new agent so | |
635 // we can delete it now. | |
636 _curr_env->Deallocate(_curr_data); | |
637 } | |
638 | |
639 // Class file data has changed by the current agent. | |
640 _curr_data = new_data; | |
641 _curr_len = new_len; | |
642 // Save the current agent env we need this to deallocate the | |
643 // memory allocated by this agent. | |
644 _curr_env = env; | |
645 } | |
646 } | |
647 | |
648 void copy_modified_data() { | |
649 // if one of the agent has modified class file data. | |
650 // Copy modified class data to new resources array. | |
651 if (_curr_data != *_data_ptr) { | |
652 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
653 memcpy(*_data_ptr, _curr_data, _curr_len); | |
654 *_end_ptr = *_data_ptr + _curr_len; | |
655 _curr_env->Deallocate(_curr_data); | |
656 } | |
657 } | |
658 }; | |
659 | |
660 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
661 | |
662 // this entry is for class file load hook on class load, redefine and retransform | |
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663 void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
0 | 664 Handle class_loader, |
665 Handle h_protection_domain, | |
666 unsigned char **data_ptr, | |
667 unsigned char **end_ptr, | |
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668 JvmtiCachedClassFileData **cache_ptr) { |
0 | 669 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, |
670 h_protection_domain, | |
671 data_ptr, end_ptr, | |
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672 cache_ptr); |
0 | 673 poster.post(); |
674 } | |
675 | |
676 void JvmtiExport::report_unsupported(bool on) { | |
677 // If any JVMTI service is turned on, we need to exit before native code | |
678 // tries to access nonexistant services. | |
679 if (on) { | |
680 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
681 } | |
682 } | |
683 | |
684 | |
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685 static inline Klass* oop_to_klass(oop obj) { |
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686 Klass* k = obj->klass(); |
0 | 687 |
688 // if the object is a java.lang.Class then return the java mirror | |
1142 | 689 if (k == SystemDictionary::Class_klass()) { |
0 | 690 if (!java_lang_Class::is_primitive(obj)) { |
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691 k = java_lang_Class::as_Klass(obj); |
0 | 692 assert(k != NULL, "class for non-primitive mirror must exist"); |
693 } | |
694 } | |
695 return k; | |
696 } | |
697 | |
698 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
699 private: | |
700 jobject _jobj; | |
701 jlong _size; | |
702 public: | |
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703 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klass(obj)) { |
0 | 704 _jobj = (jobject)to_jobject(obj); |
705 _size = obj->size() * wordSize; | |
706 }; | |
707 jobject jni_jobject() { return _jobj; } | |
708 jlong size() { return _size; } | |
709 }; | |
710 | |
711 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
712 private: | |
713 jint _code_size; | |
714 const void *_code_data; | |
715 jint _map_length; | |
716 jvmtiAddrLocationMap *_map; | |
717 const void *_compile_info; | |
718 public: | |
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719 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
0 | 720 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
1748 | 721 _code_data = nm->insts_begin(); |
722 _code_size = nm->insts_size(); | |
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723 _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
0 | 724 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
725 } | |
726 ~JvmtiCompiledMethodLoadEventMark() { | |
6197 | 727 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map, mtInternal); |
0 | 728 } |
729 | |
730 jint code_size() { return _code_size; } | |
731 const void *code_data() { return _code_data; } | |
732 jint map_length() { return _map_length; } | |
733 const jvmtiAddrLocationMap* map() { return _map; } | |
734 const void *compile_info() { return _compile_info; } | |
735 }; | |
736 | |
737 | |
738 | |
739 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
740 private: | |
741 jobject _jobj; | |
742 public: | |
743 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
744 : JvmtiThreadEventMark(thread){ | |
745 _jobj = to_jobject(object); | |
746 } | |
747 jobject jni_object() { return _jobj; } | |
748 }; | |
749 | |
750 /////////////////////////////////////////////////////////////// | |
751 // | |
752 // pending CompiledMethodUnload support | |
753 // | |
754 | |
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755 void JvmtiExport::post_compiled_method_unload( |
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756 jmethodID method, const void *code_begin) { |
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757 JavaThread* thread = JavaThread::current(); |
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758 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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759 ("JVMTI [%s] method compile unload event triggered", |
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760 JvmtiTrace::safe_get_thread_name(thread))); |
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761 |
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762 // post the event for each environment that has this event enabled. |
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763 JvmtiEnvIterator it; |
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764 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
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765 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
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766 |
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767 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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768 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
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769 JvmtiTrace::safe_get_thread_name(thread), method)); |
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770 |
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771 ResourceMark rm(thread); |
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772 |
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773 JvmtiEventMark jem(thread); |
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774 JvmtiJavaThreadEventTransition jet(thread); |
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775 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
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776 if (callback != NULL) { |
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777 (*callback)(env->jvmti_external(), method, code_begin); |
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778 } |
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779 } |
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780 } |
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781 } |
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782 |
0 | 783 /////////////////////////////////////////////////////////////// |
784 // | |
785 // JvmtiExport | |
786 // | |
787 | |
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788 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, Method* method, address location) { |
0 | 789 HandleMark hm(thread); |
790 methodHandle mh(thread, method); | |
791 | |
792 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
793 if (state == NULL) { | |
794 return; | |
795 } | |
796 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
797 JvmtiTrace::safe_get_thread_name(thread))); | |
798 JvmtiEnvThreadStateIterator it(state); | |
799 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
800 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
801 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
802 ThreadState old_os_state = thread->osthread()->get_state(); | |
803 thread->osthread()->set_state(BREAKPOINTED); | |
804 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
805 JvmtiTrace::safe_get_thread_name(thread), | |
806 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
807 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
808 location - mh()->code_base() )); | |
809 | |
810 JvmtiEnv *env = ets->get_env(); | |
811 JvmtiLocationEventMark jem(thread, mh, location); | |
812 JvmtiJavaThreadEventTransition jet(thread); | |
813 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
814 if (callback != NULL) { | |
815 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
816 jem.jni_methodID(), jem.location()); | |
817 } | |
818 | |
819 ets->set_breakpoint_posted(); | |
820 thread->osthread()->set_state(old_os_state); | |
821 } | |
822 } | |
823 } | |
824 | |
825 ////////////////////////////////////////////////////////////////////////////// | |
826 | |
827 bool JvmtiExport::_can_get_source_debug_extension = false; | |
828 bool JvmtiExport::_can_maintain_original_method_order = false; | |
829 bool JvmtiExport::_can_post_interpreter_events = false; | |
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830 bool JvmtiExport::_can_post_on_exceptions = false; |
0 | 831 bool JvmtiExport::_can_post_breakpoint = false; |
832 bool JvmtiExport::_can_post_field_access = false; | |
833 bool JvmtiExport::_can_post_field_modification = false; | |
834 bool JvmtiExport::_can_post_method_entry = false; | |
835 bool JvmtiExport::_can_post_method_exit = false; | |
836 bool JvmtiExport::_can_pop_frame = false; | |
837 bool JvmtiExport::_can_force_early_return = false; | |
838 | |
839 bool JvmtiExport::_should_post_single_step = false; | |
840 bool JvmtiExport::_should_post_field_access = false; | |
841 bool JvmtiExport::_should_post_field_modification = false; | |
842 bool JvmtiExport::_should_post_class_load = false; | |
843 bool JvmtiExport::_should_post_class_prepare = false; | |
844 bool JvmtiExport::_should_post_class_unload = false; | |
845 bool JvmtiExport::_should_post_thread_life = false; | |
846 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
847 bool JvmtiExport::_should_post_native_method_bind = false; | |
848 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
849 bool JvmtiExport::_should_post_data_dump = false; | |
850 bool JvmtiExport::_should_post_compiled_method_load = false; | |
851 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
852 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
853 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
854 bool JvmtiExport::_should_post_monitor_wait = false; | |
855 bool JvmtiExport::_should_post_monitor_waited = false; | |
856 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
857 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
858 bool JvmtiExport::_should_post_object_free = false; | |
859 bool JvmtiExport::_should_post_resource_exhausted = false; | |
860 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
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861 bool JvmtiExport::_should_post_on_exceptions = false; |
0 | 862 |
863 //////////////////////////////////////////////////////////////////////////////////////////////// | |
864 | |
865 | |
866 // | |
867 // JVMTI single step management | |
868 // | |
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869 void JvmtiExport::at_single_stepping_point(JavaThread *thread, Method* method, address location) { |
0 | 870 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); |
871 | |
872 HandleMark hm(thread); | |
873 methodHandle mh(thread, method); | |
874 | |
875 // update information about current location and post a step event | |
876 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
877 if (state == NULL) { | |
878 return; | |
879 } | |
880 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
881 JvmtiTrace::safe_get_thread_name(thread))); | |
882 if (!state->hide_single_stepping()) { | |
883 if (state->is_pending_step_for_popframe()) { | |
884 state->process_pending_step_for_popframe(); | |
885 } | |
886 if (state->is_pending_step_for_earlyret()) { | |
887 state->process_pending_step_for_earlyret(); | |
888 } | |
889 JvmtiExport::post_single_step(thread, mh(), location); | |
890 } | |
891 } | |
892 | |
893 | |
894 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
895 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
896 if (state != NULL) { | |
897 state->clear_hide_single_stepping(); | |
898 } | |
899 } | |
900 | |
901 | |
902 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
903 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
904 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
905 state->set_hide_single_stepping(); | |
906 return true; | |
907 } else { | |
908 return false; | |
909 } | |
910 } | |
911 | |
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912 void JvmtiExport::post_class_load(JavaThread *thread, Klass* klass) { |
0 | 913 HandleMark hm(thread); |
914 KlassHandle kh(thread, klass); | |
915 | |
916 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
917 JvmtiTrace::safe_get_thread_name(thread))); | |
918 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
919 if (state == NULL) { | |
920 return; | |
921 } | |
922 JvmtiEnvThreadStateIterator it(state); | |
923 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
924 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
925 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
926 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 927 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 928 |
929 JvmtiEnv *env = ets->get_env(); | |
930 JvmtiClassEventMark jem(thread, kh()); | |
931 JvmtiJavaThreadEventTransition jet(thread); | |
932 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
933 if (callback != NULL) { | |
934 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
935 } | |
936 } | |
937 } | |
938 } | |
939 | |
940 | |
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941 void JvmtiExport::post_class_prepare(JavaThread *thread, Klass* klass) { |
0 | 942 HandleMark hm(thread); |
943 KlassHandle kh(thread, klass); | |
944 | |
945 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
946 JvmtiTrace::safe_get_thread_name(thread))); | |
947 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
948 if (state == NULL) { | |
949 return; | |
950 } | |
951 JvmtiEnvThreadStateIterator it(state); | |
952 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
953 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
954 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
955 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 956 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 957 |
958 JvmtiEnv *env = ets->get_env(); | |
959 JvmtiClassEventMark jem(thread, kh()); | |
960 JvmtiJavaThreadEventTransition jet(thread); | |
961 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
962 if (callback != NULL) { | |
963 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
964 } | |
965 } | |
966 } | |
967 } | |
968 | |
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969 void JvmtiExport::post_class_unload(Klass* klass) { |
0 | 970 Thread *thread = Thread::current(); |
971 HandleMark hm(thread); | |
972 KlassHandle kh(thread, klass); | |
973 | |
974 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
975 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
976 assert(thread->is_VM_thread(), "wrong thread"); | |
977 | |
978 // get JavaThread for whom we are proxy | |
979 JavaThread *real_thread = | |
980 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
981 | |
982 JvmtiEnvIterator it; | |
983 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
984 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
985 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
6983 | 986 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 987 |
988 // do everything manually, since this is a proxy - needs special care | |
989 JNIEnv* jni_env = real_thread->jni_environment(); | |
990 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
6983 | 991 jclass jk = (jclass)JNIHandles::make_local(real_thread, kh()->java_mirror()); |
0 | 992 |
993 // Before we call the JVMTI agent, we have to set the state in the | |
994 // thread for which we are proxying. | |
995 JavaThreadState prev_state = real_thread->thread_state(); | |
996 assert(prev_state == _thread_blocked, "JavaThread should be at safepoint"); | |
997 real_thread->set_thread_state(_thread_in_native); | |
998 | |
999 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
1000 if (callback != NULL) { | |
1001 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
1002 } | |
1003 | |
1004 assert(real_thread->thread_state() == _thread_in_native, | |
1005 "JavaThread should be in native"); | |
1006 real_thread->set_thread_state(prev_state); | |
1007 | |
1008 JNIHandles::destroy_local(jk); | |
1009 JNIHandles::destroy_local(jt); | |
1010 } | |
1011 } | |
1012 } | |
1013 } | |
1014 | |
1015 | |
1016 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
1017 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1018 | |
1019 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
1020 JvmtiTrace::safe_get_thread_name(thread))); | |
1021 | |
1022 // do JVMTI thread initialization (if needed) | |
1023 JvmtiEventController::thread_started(thread); | |
1024 | |
1025 // Do not post thread start event for hidden java thread. | |
1026 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
1027 !thread->is_hidden_from_external_view()) { | |
1028 JvmtiEnvIterator it; | |
1029 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1030 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
1031 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
1032 JvmtiTrace::safe_get_thread_name(thread) )); | |
1033 | |
1034 JvmtiThreadEventMark jem(thread); | |
1035 JvmtiJavaThreadEventTransition jet(thread); | |
1036 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
1037 if (callback != NULL) { | |
1038 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1039 } | |
1040 } | |
1041 } | |
1042 } | |
1043 } | |
1044 | |
1045 | |
1046 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
1047 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
1048 JvmtiTrace::safe_get_thread_name(thread))); | |
1049 | |
1050 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1051 if (state == NULL) { | |
1052 return; | |
1053 } | |
1054 | |
1055 // Do not post thread end event for hidden java thread. | |
1056 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
1057 !thread->is_hidden_from_external_view()) { | |
1058 | |
1059 JvmtiEnvThreadStateIterator it(state); | |
1060 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1061 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
1062 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
1063 JvmtiTrace::safe_get_thread_name(thread) )); | |
1064 | |
1065 JvmtiEnv *env = ets->get_env(); | |
1066 JvmtiThreadEventMark jem(thread); | |
1067 JvmtiJavaThreadEventTransition jet(thread); | |
1068 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
1069 if (callback != NULL) { | |
1070 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1071 } | |
1072 } | |
1073 } | |
1074 } | |
1075 } | |
1076 | |
1077 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
1078 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
1079 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
1080 | |
1081 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
1082 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
1083 | |
1084 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
1085 if (callback != NULL) { | |
1086 (*callback)(env->jvmti_external(), tag); | |
1087 } | |
1088 } | |
1089 | |
1090 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
1091 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
1092 | |
1093 JvmtiEnvIterator it; | |
1094 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1095 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
1096 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
1097 | |
1098 JavaThread *thread = JavaThread::current(); | |
1099 JvmtiThreadEventMark jem(thread); | |
1100 JvmtiJavaThreadEventTransition jet(thread); | |
1101 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
1102 if (callback != NULL) { | |
1103 (*callback)(env->jvmti_external(), jem.jni_env(), | |
1104 resource_exhausted_flags, NULL, description); | |
1105 } | |
1106 } | |
1107 } | |
1108 } | |
1109 | |
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1110 void JvmtiExport::post_method_entry(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1111 HandleMark hm(thread); |
1112 methodHandle mh(thread, method); | |
1113 | |
1114 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
1115 JvmtiTrace::safe_get_thread_name(thread), | |
1116 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1117 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1118 | |
1119 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1120 if (state == NULL || !state->is_interp_only_mode()) { | |
1121 // for any thread that actually wants method entry, interp_only_mode is set | |
1122 return; | |
1123 } | |
1124 | |
1125 state->incr_cur_stack_depth(); | |
1126 | |
1127 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1128 JvmtiEnvThreadStateIterator it(state); | |
1129 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1130 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1131 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
1132 JvmtiTrace::safe_get_thread_name(thread), | |
1133 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1134 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1135 | |
1136 JvmtiEnv *env = ets->get_env(); | |
1137 JvmtiMethodEventMark jem(thread, mh); | |
1138 JvmtiJavaThreadEventTransition jet(thread); | |
1139 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
1140 if (callback != NULL) { | |
1141 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
1142 } | |
1143 } | |
1144 } | |
1145 } | |
1146 } | |
1147 | |
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1148 void JvmtiExport::post_method_exit(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1149 HandleMark hm(thread); |
1150 methodHandle mh(thread, method); | |
1151 | |
1152 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
1153 JvmtiTrace::safe_get_thread_name(thread), | |
1154 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1155 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1156 | |
1157 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1158 if (state == NULL || !state->is_interp_only_mode()) { | |
1159 // for any thread that actually wants method exit, interp_only_mode is set | |
1160 return; | |
1161 } | |
1162 | |
1163 // return a flag when a method terminates by throwing an exception | |
1164 // i.e. if an exception is thrown and it's not caught by the current method | |
1165 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
1166 | |
1167 | |
1168 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1169 Handle result; | |
1170 jvalue value; | |
1171 value.j = 0L; | |
1172 | |
1173 // if the method hasn't been popped because of an exception then we populate | |
1174 // the return_value parameter for the callback. At this point we only have | |
1175 // the address of a "raw result" and we just call into the interpreter to | |
1176 // convert this into a jvalue. | |
1177 if (!exception_exit) { | |
1178 oop oop_result; | |
1179 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
1180 if (type == T_OBJECT || type == T_ARRAY) { | |
1181 result = Handle(thread, oop_result); | |
1182 } | |
1183 } | |
1184 | |
1185 JvmtiEnvThreadStateIterator it(state); | |
1186 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1187 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1188 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", | |
1189 JvmtiTrace::safe_get_thread_name(thread), | |
1190 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1191 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1192 | |
1193 JvmtiEnv *env = ets->get_env(); | |
1194 JvmtiMethodEventMark jem(thread, mh); | |
1195 if (result.not_null()) { | |
1196 value.l = JNIHandles::make_local(thread, result()); | |
1197 } | |
1198 JvmtiJavaThreadEventTransition jet(thread); | |
1199 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
1200 if (callback != NULL) { | |
1201 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1202 jem.jni_methodID(), exception_exit, value); | |
1203 } | |
1204 } | |
1205 } | |
1206 } | |
1207 | |
1208 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1209 JvmtiEnvThreadStateIterator it(state); | |
1210 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1211 int cur_frame_number = state->cur_stack_depth(); | |
1212 | |
1213 if (ets->is_frame_pop(cur_frame_number)) { | |
1214 // we have a NotifyFramePop entry for this frame. | |
1215 // now check that this env/thread wants this event | |
1216 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1217 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
1218 JvmtiTrace::safe_get_thread_name(thread), | |
1219 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1220 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1221 | |
1222 // we also need to issue a frame pop event for this frame | |
1223 JvmtiEnv *env = ets->get_env(); | |
1224 JvmtiMethodEventMark jem(thread, mh); | |
1225 JvmtiJavaThreadEventTransition jet(thread); | |
1226 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
1227 if (callback != NULL) { | |
1228 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1229 jem.jni_methodID(), exception_exit); | |
1230 } | |
1231 } | |
1232 // remove the frame's entry | |
1233 ets->clear_frame_pop(cur_frame_number); | |
1234 } | |
1235 } | |
1236 } | |
1237 | |
1238 state->decr_cur_stack_depth(); | |
1239 } | |
1240 | |
1241 | |
1242 // Todo: inline this for optimization | |
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1243 void JvmtiExport::post_single_step(JavaThread *thread, Method* method, address location) { |
0 | 1244 HandleMark hm(thread); |
1245 methodHandle mh(thread, method); | |
1246 | |
1247 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1248 if (state == NULL) { | |
1249 return; | |
1250 } | |
1251 JvmtiEnvThreadStateIterator it(state); | |
1252 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1253 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
1254 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
1255 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
1256 JvmtiTrace::safe_get_thread_name(thread), | |
1257 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1258 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1259 location - mh()->code_base() )); | |
1260 | |
1261 JvmtiEnv *env = ets->get_env(); | |
1262 JvmtiLocationEventMark jem(thread, mh, location); | |
1263 JvmtiJavaThreadEventTransition jet(thread); | |
1264 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
1265 if (callback != NULL) { | |
1266 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1267 jem.jni_methodID(), jem.location()); | |
1268 } | |
1269 | |
1270 ets->set_single_stepping_posted(); | |
1271 } | |
1272 } | |
1273 } | |
1274 | |
1275 | |
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1276 void JvmtiExport::post_exception_throw(JavaThread *thread, Method* method, address location, oop exception) { |
0 | 1277 HandleMark hm(thread); |
1278 methodHandle mh(thread, method); | |
1279 Handle exception_handle(thread, exception); | |
1280 | |
1281 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1282 if (state == NULL) { | |
1283 return; | |
1284 } | |
1285 | |
1286 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
1287 JvmtiTrace::safe_get_thread_name(thread))); | |
1288 if (!state->is_exception_detected()) { | |
1289 state->set_exception_detected(); | |
1290 JvmtiEnvThreadStateIterator it(state); | |
1291 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1292 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
1293 | |
1294 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
1295 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
1296 JvmtiTrace::safe_get_thread_name(thread), | |
1297 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1298 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1299 location - mh()->code_base() )); | |
1300 | |
1301 JvmtiEnv *env = ets->get_env(); | |
1302 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1303 | |
1304 // It's okay to clear these exceptions here because we duplicate | |
1305 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
1306 EXCEPTION_MARK; | |
1307 | |
1308 bool should_repeat; | |
1309 vframeStream st(thread); | |
1310 assert(!st.at_end(), "cannot be at end"); | |
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1311 Method* current_method = NULL; |
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1312 // A GC may occur during the Method::fast_exception_handler_bci_for() |
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1313 // call below if it needs to load the constraint class. Using a |
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1314 // methodHandle to keep the 'current_method' from being deallocated |
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1315 // if GC happens. |
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1316 methodHandle current_mh = methodHandle(thread, current_method); |
0 | 1317 int current_bci = -1; |
1318 do { | |
1319 current_method = st.method(); | |
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1320 current_mh = methodHandle(thread, current_method); |
0 | 1321 current_bci = st.bci(); |
1322 do { | |
1323 should_repeat = false; | |
1324 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
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1325 current_bci = Method::fast_exception_handler_bci_for( |
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1326 current_mh, eh_klass, current_bci, THREAD); |
0 | 1327 if (HAS_PENDING_EXCEPTION) { |
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1328 exception_handle = Handle(thread, PENDING_EXCEPTION); |
0 | 1329 CLEAR_PENDING_EXCEPTION; |
1330 should_repeat = true; | |
1331 } | |
1332 } while (should_repeat && (current_bci != -1)); | |
1333 st.next(); | |
1334 } while ((current_bci < 0) && (!st.at_end())); | |
1335 | |
1336 jmethodID catch_jmethodID; | |
1337 if (current_bci < 0) { | |
1338 catch_jmethodID = 0; | |
1339 current_bci = 0; | |
1340 } else { | |
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1341 catch_jmethodID = jem.to_jmethodID(current_mh); |
0 | 1342 } |
1343 | |
1344 JvmtiJavaThreadEventTransition jet(thread); | |
1345 jvmtiEventException callback = env->callbacks()->Exception; | |
1346 if (callback != NULL) { | |
1347 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1348 jem.jni_methodID(), jem.location(), | |
1349 jem.exception(), | |
1350 catch_jmethodID, current_bci); | |
1351 } | |
1352 } | |
1353 } | |
1354 } | |
1355 | |
1356 // frames may get popped because of this throw, be safe - invalidate cached depth | |
1357 state->invalidate_cur_stack_depth(); | |
1358 } | |
1359 | |
1360 | |
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1361 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, Method* method, address location, oop exception, bool in_handler_frame) { |
0 | 1362 HandleMark hm(thread); |
1363 methodHandle mh(thread, method); | |
1364 Handle exception_handle(thread, exception); | |
1365 | |
1366 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1367 if (state == NULL) { | |
1368 return; | |
1369 } | |
1370 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1371 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
1372 JvmtiTrace::safe_get_thread_name(thread), | |
1373 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1374 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1375 location==0? "no location:" : "", | |
1376 location==0? 0 : location - mh()->code_base(), | |
1377 in_handler_frame? "in handler frame" : "not handler frame" )); | |
1378 | |
1379 if (state->is_exception_detected()) { | |
1380 | |
1381 state->invalidate_cur_stack_depth(); | |
1382 if (!in_handler_frame) { | |
1383 // Not in exception handler. | |
1384 if(state->is_interp_only_mode()) { | |
1385 // method exit and frame pop events are posted only in interp mode. | |
1386 // When these events are enabled code should be in running in interp mode. | |
1387 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
1388 // The cached cur_stack_depth might have changed from the | |
1389 // operations of frame pop or method exit. We are not 100% sure | |
1390 // the cached cur_stack_depth is still valid depth so invalidate | |
1391 // it. | |
1392 state->invalidate_cur_stack_depth(); | |
1393 } | |
1394 } else { | |
1395 // In exception handler frame. Report exception catch. | |
1396 assert(location != NULL, "must be a known location"); | |
1397 // Update cur_stack_depth - the frames above the current frame | |
1398 // have been unwound due to this exception: | |
1399 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
1400 state->set_exception_caught(); | |
1401 | |
1402 JvmtiEnvThreadStateIterator it(state); | |
1403 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1404 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
1405 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1406 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
1407 JvmtiTrace::safe_get_thread_name(thread), | |
1408 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1409 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1410 location - mh()->code_base() )); | |
1411 | |
1412 JvmtiEnv *env = ets->get_env(); | |
1413 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1414 JvmtiJavaThreadEventTransition jet(thread); | |
1415 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
1416 if (callback != NULL) { | |
1417 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1418 jem.jni_methodID(), jem.location(), | |
1419 jem.exception()); | |
1420 } | |
1421 } | |
1422 } | |
1423 } | |
1424 } | |
1425 } | |
1426 | |
1427 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1428 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1429 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1430 // At least one field access watch is set so we have more work | |
1431 // to do. This wrapper is used by entry points that allow us | |
1432 // to create handles in post_field_access_by_jni(). | |
1433 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1434 // event posting can block so refetch oop if we were passed a jobj | |
1435 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1436 } | |
1437 return obj; | |
1438 } | |
1439 | |
1440 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1441 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1442 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1443 // At least one field access watch is set so we have more work | |
1444 // to do. This wrapper is used by "quick" entry points that don't | |
1445 // allow us to create handles in post_field_access_by_jni(). We | |
1446 // override that with a ResetNoHandleMark. | |
1447 ResetNoHandleMark rnhm; | |
1448 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1449 // event posting can block so refetch oop if we were passed a jobj | |
1450 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1451 } | |
1452 return obj; | |
1453 } | |
1454 | |
1455 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
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1456 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1457 // We must be called with a Java context in order to provide reasonable |
1458 // values for the klazz, method, and location fields. The callers of this | |
1459 // function don't make the call unless there is a Java context. | |
1460 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
1461 | |
1462 ResourceMark rm; | |
1463 fieldDescriptor fd; | |
1464 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1465 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1466 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
1467 if (!valid_fieldID) return; | |
1468 // field accesses are not watched so bail | |
1469 if (!fd.is_field_access_watched()) return; | |
1470 | |
1471 HandleMark hm(thread); | |
1472 KlassHandle h_klass(thread, klass); | |
1473 Handle h_obj; | |
1474 if (!is_static) { | |
1475 // non-static field accessors have an object, but we need a handle | |
1476 assert(obj != NULL, "non-static needs an object"); | |
1477 h_obj = Handle(thread, obj); | |
1478 } | |
1479 post_field_access(thread, | |
1480 thread->last_frame().interpreter_frame_method(), | |
1481 thread->last_frame().interpreter_frame_bcp(), | |
1482 h_klass, h_obj, fieldID); | |
1483 } | |
1484 | |
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1485 void JvmtiExport::post_field_access(JavaThread *thread, Method* method, |
0 | 1486 address location, KlassHandle field_klass, Handle object, jfieldID field) { |
1487 | |
1488 HandleMark hm(thread); | |
1489 methodHandle mh(thread, method); | |
1490 | |
1491 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1492 if (state == NULL) { | |
1493 return; | |
1494 } | |
1495 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
1496 JvmtiTrace::safe_get_thread_name(thread))); | |
1497 JvmtiEnvThreadStateIterator it(state); | |
1498 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1499 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
1500 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
1501 JvmtiTrace::safe_get_thread_name(thread), | |
1502 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1503 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1504 location - mh()->code_base() )); | |
1505 | |
1506 JvmtiEnv *env = ets->get_env(); | |
1507 JvmtiLocationEventMark jem(thread, mh, location); | |
1508 jclass field_jclass = jem.to_jclass(field_klass()); | |
1509 jobject field_jobject = jem.to_jobject(object()); | |
1510 JvmtiJavaThreadEventTransition jet(thread); | |
1511 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
1512 if (callback != NULL) { | |
1513 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1514 jem.jni_methodID(), jem.location(), | |
1515 field_jclass, field_jobject, field); | |
1516 } | |
1517 } | |
1518 } | |
1519 } | |
1520 | |
1521 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1522 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1523 char sig_type, jvalue *value) { |
1524 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1525 // At least one field modification watch is set so we have more work | |
1526 // to do. This wrapper is used by entry points that allow us | |
1527 // to create handles in post_field_modification_by_jni(). | |
1528 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1529 // event posting can block so refetch oop if we were passed a jobj | |
1530 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1531 } | |
1532 return obj; | |
1533 } | |
1534 | |
1535 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1536 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1537 char sig_type, jvalue *value) { |
1538 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1539 // At least one field modification watch is set so we have more work | |
1540 // to do. This wrapper is used by "quick" entry points that don't | |
1541 // allow us to create handles in post_field_modification_by_jni(). We | |
1542 // override that with a ResetNoHandleMark. | |
1543 ResetNoHandleMark rnhm; | |
1544 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1545 // event posting can block so refetch oop if we were passed a jobj | |
1546 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1547 } | |
1548 return obj; | |
1549 } | |
1550 | |
1551 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
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1552 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1553 char sig_type, jvalue *value) { |
1554 // We must be called with a Java context in order to provide reasonable | |
1555 // values for the klazz, method, and location fields. The callers of this | |
1556 // function don't make the call unless there is a Java context. | |
1557 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
1558 | |
1559 ResourceMark rm; | |
1560 fieldDescriptor fd; | |
1561 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1562 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1563 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
1564 if (!valid_fieldID) return; | |
1565 // field modifications are not watched so bail | |
1566 if (!fd.is_field_modification_watched()) return; | |
1567 | |
1568 HandleMark hm(thread); | |
1569 | |
1570 Handle h_obj; | |
1571 if (!is_static) { | |
1572 // non-static field accessors have an object, but we need a handle | |
1573 assert(obj != NULL, "non-static needs an object"); | |
1574 h_obj = Handle(thread, obj); | |
1575 } | |
1576 KlassHandle h_klass(thread, klass); | |
1577 post_field_modification(thread, | |
1578 thread->last_frame().interpreter_frame_method(), | |
1579 thread->last_frame().interpreter_frame_bcp(), | |
1580 h_klass, h_obj, fieldID, sig_type, value); | |
1581 } | |
1582 | |
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1583 void JvmtiExport::post_raw_field_modification(JavaThread *thread, Method* method, |
0 | 1584 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1585 char sig_type, jvalue *value) { | |
1586 | |
1587 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'C' || sig_type == 'S') { | |
1588 // 'I' instructions are used for byte, char, short and int. | |
1589 // determine which it really is, and convert | |
1590 fieldDescriptor fd; | |
1591 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
1592 // should be found (if not, leave as is) | |
1593 if (found) { | |
1594 jint ival = value->i; | |
1595 // convert value from int to appropriate type | |
1596 switch (fd.field_type()) { | |
1597 case T_BOOLEAN: | |
1598 sig_type = 'Z'; | |
1599 value->i = 0; // clear it | |
1600 value->z = (jboolean)ival; | |
1601 break; | |
1602 case T_BYTE: | |
1603 sig_type = 'B'; | |
1604 value->i = 0; // clear it | |
1605 value->b = (jbyte)ival; | |
1606 break; | |
1607 case T_CHAR: | |
1608 sig_type = 'C'; | |
1609 value->i = 0; // clear it | |
1610 value->c = (jchar)ival; | |
1611 break; | |
1612 case T_SHORT: | |
1613 sig_type = 'S'; | |
1614 value->i = 0; // clear it | |
1615 value->s = (jshort)ival; | |
1616 break; | |
1617 case T_INT: | |
1618 // nothing to do | |
1619 break; | |
1620 default: | |
1621 // this is an integer instruction, should be one of above | |
1622 ShouldNotReachHere(); | |
1623 break; | |
1624 } | |
1625 } | |
1626 } | |
1627 | |
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1628 assert(sig_type != '[', "array should have sig_type == 'L'"); |
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1629 bool handle_created = false; |
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1630 |
0 | 1631 // convert oop to JNI handle. |
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1632 if (sig_type == 'L') { |
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1633 handle_created = true; |
0 | 1634 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); |
1635 } | |
1636 | |
1637 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
1638 | |
1639 // Destroy the JNI handle allocated above. | |
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1640 if (handle_created) { |
0 | 1641 JNIHandles::destroy_local(value->l); |
1642 } | |
1643 } | |
1644 | |
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1645 void JvmtiExport::post_field_modification(JavaThread *thread, Method* method, |
0 | 1646 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1647 char sig_type, jvalue *value_ptr) { | |
1648 | |
1649 HandleMark hm(thread); | |
1650 methodHandle mh(thread, method); | |
1651 | |
1652 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1653 if (state == NULL) { | |
1654 return; | |
1655 } | |
1656 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1657 ("JVMTI [%s] Trg Field Modification event triggered", | |
1658 JvmtiTrace::safe_get_thread_name(thread))); | |
1659 | |
1660 JvmtiEnvThreadStateIterator it(state); | |
1661 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1662 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
1663 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1664 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
1665 JvmtiTrace::safe_get_thread_name(thread), | |
1666 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1667 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1668 location - mh()->code_base() )); | |
1669 | |
1670 JvmtiEnv *env = ets->get_env(); | |
1671 JvmtiLocationEventMark jem(thread, mh, location); | |
1672 jclass field_jclass = jem.to_jclass(field_klass()); | |
1673 jobject field_jobject = jem.to_jobject(object()); | |
1674 JvmtiJavaThreadEventTransition jet(thread); | |
1675 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
1676 if (callback != NULL) { | |
1677 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1678 jem.jni_methodID(), jem.location(), | |
1679 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
1680 } | |
1681 } | |
1682 } | |
1683 } | |
1684 | |
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1685 void JvmtiExport::post_native_method_bind(Method* method, address* function_ptr) { |
0 | 1686 JavaThread* thread = JavaThread::current(); |
1687 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1688 | |
1689 HandleMark hm(thread); | |
1690 methodHandle mh(thread, method); | |
1691 | |
1692 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
1693 JvmtiTrace::safe_get_thread_name(thread))); | |
1694 | |
1695 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1696 JvmtiEnvIterator it; | |
1697 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1698 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1699 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
1700 JvmtiTrace::safe_get_thread_name(thread) )); | |
1701 | |
1702 JvmtiMethodEventMark jem(thread, mh); | |
1703 JvmtiJavaThreadEventTransition jet(thread); | |
1704 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
1705 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
1706 if (callback != NULL) { | |
1707 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
1708 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
1709 } | |
1710 } | |
1711 } | |
1712 } | |
1713 } | |
1714 | |
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1715 // Returns a record containing inlining information for the given nmethod |
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1716 jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
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1717 jint numstackframes = 0; |
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1718 jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
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1719 record->header.kind = JVMTI_CMLR_INLINE_INFO; |
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1720 record->header.next = NULL; |
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1721 record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
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1722 record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
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1723 record->numpcs = 0; |
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1724 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1725 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1726 record->numpcs++; |
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1727 } |
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1728 record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
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1729 int scope = 0; |
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1730 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1731 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1732 void* pc_address = (void*)p->real_pc(nm); |
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1733 assert(pc_address != NULL, "pc_address must be non-null"); |
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1734 record->pcinfo[scope].pc = pc_address; |
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1735 numstackframes=0; |
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1736 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1737 numstackframes++; |
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1738 } |
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1739 assert(numstackframes != 0, "numstackframes must be nonzero."); |
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1740 record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
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1741 record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
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1742 record->pcinfo[scope].numstackframes = numstackframes; |
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1743 int stackframe = 0; |
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1744 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1745 // 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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1746 assert(sd->method() != NULL, "sd->method() cannot be null."); |
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1747 record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
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1748 record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
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1749 stackframe++; |
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1750 } |
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1751 scope++; |
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1752 } |
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1753 return record; |
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1754 } |
0 | 1755 |
1756 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
1757 JavaThread* thread = JavaThread::current(); | |
1758 | |
1759 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1760 ("JVMTI [%s] method compile load event triggered", | |
1761 JvmtiTrace::safe_get_thread_name(thread))); | |
1762 | |
1763 JvmtiEnvIterator it; | |
1764 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1765 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1766 | |
1767 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1768 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
1769 JvmtiTrace::safe_get_thread_name(thread), | |
1770 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
1771 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
1772 ResourceMark rm(thread); | |
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1773 HandleMark hm(thread); |
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1774 |
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1775 // Add inlining information |
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1776 jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
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1777 // Pass inlining information through the void pointer |
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1778 JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
0 | 1779 JvmtiJavaThreadEventTransition jet(thread); |
1780 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1781 if (callback != NULL) { | |
1782 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
1783 jem.code_size(), jem.code_data(), jem.map_length(), | |
1784 jem.map(), jem.compile_info()); | |
1785 } | |
1786 } | |
1787 } | |
1788 } | |
1789 | |
1790 | |
1791 // post a COMPILED_METHOD_LOAD event for a given environment | |
1792 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
1793 const void *code_begin, const jint map_length, | |
1794 const jvmtiAddrLocationMap* map) | |
1795 { | |
1796 JavaThread* thread = JavaThread::current(); | |
1797 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1798 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
1799 JvmtiTrace::safe_get_thread_name(thread))); | |
1800 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1801 | |
1802 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1803 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
1804 JvmtiTrace::safe_get_thread_name(thread), method)); | |
1805 | |
1806 JvmtiEventMark jem(thread); | |
1807 JvmtiJavaThreadEventTransition jet(thread); | |
1808 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1809 if (callback != NULL) { | |
1810 (*callback)(env->jvmti_external(), method, | |
1811 length, code_begin, map_length, | |
1812 map, NULL); | |
1813 } | |
1814 } | |
1815 } | |
1816 | |
1817 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
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1818 assert(name != NULL && name[0] != '\0', "sanity check"); |
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1819 |
0 | 1820 JavaThread* thread = JavaThread::current(); |
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1821 // In theory everyone coming thru here is in_vm but we need to be certain |
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1822 // because a callee will do a vm->native transition |
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1823 ThreadInVMfromUnknown __tiv; |
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1824 |
0 | 1825 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
1826 ("JVMTI [%s] method dynamic code generated event triggered", | |
1827 JvmtiTrace::safe_get_thread_name(thread))); | |
1828 JvmtiEnvIterator it; | |
1829 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1830 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1831 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1832 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1833 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1834 JvmtiEventMark jem(thread); | |
1835 JvmtiJavaThreadEventTransition jet(thread); | |
1836 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1837 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1838 if (callback != NULL) { | |
1839 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1840 } | |
1841 } | |
1842 } | |
1843 } | |
1844 | |
1845 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
1846 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
1847 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
1848 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
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1849 } else { |
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1850 // It may not be safe to post the event from this thread. Defer all |
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1851 // postings to the service thread so that it can perform them in a safe |
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1852 // context and in-order. |
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1853 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1854 JvmtiDeferredEvent event = JvmtiDeferredEvent::dynamic_code_generated_event( |
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1855 name, code_begin, code_end); |
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1856 JvmtiDeferredEventQueue::enqueue(event); |
0 | 1857 } |
1858 } | |
1859 | |
1860 | |
1861 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
1862 // used by GenerateEvents | |
1863 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
1864 const void *code_begin, const void *code_end) | |
1865 { | |
1866 JavaThread* thread = JavaThread::current(); | |
1867 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1868 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
1869 JvmtiTrace::safe_get_thread_name(thread))); | |
1870 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1871 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1872 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1873 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1874 JvmtiEventMark jem(thread); | |
1875 JvmtiJavaThreadEventTransition jet(thread); | |
1876 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1877 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1878 if (callback != NULL) { | |
1879 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1880 } | |
1881 } | |
1882 } | |
1883 | |
1884 // post a DynamicCodeGenerated event while holding locks in the VM. | |
1885 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
1886 address code_begin, address code_end) | |
1887 { | |
1888 // register the stub with the current dynamic code event collector | |
1889 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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1890 // state can only be NULL if the current thread is exiting which |
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1891 // should not happen since we're trying to post an event |
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1892 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
0 | 1893 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
1894 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
1895 collector->register_stub(name, code_begin, code_end); | |
1896 } | |
1897 | |
1898 // Collect all the vm internally allocated objects which are visible to java world | |
1899 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
1900 Thread* thread = ThreadLocalStorage::thread(); | |
1901 if (thread != NULL && thread->is_Java_thread()) { | |
1902 // Can not take safepoint here. | |
1903 No_Safepoint_Verifier no_sfpt; | |
1904 // Can not take safepoint here so can not use state_for to get | |
1905 // jvmti thread state. | |
1906 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
1907 if (state != NULL ) { | |
1908 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
1909 JvmtiVMObjectAllocEventCollector *collector; | |
1910 collector = state->get_vm_object_alloc_event_collector(); | |
1911 if (collector != NULL && collector->is_enabled()) { | |
1912 // Don't record classes as these will be notified via the ClassLoad | |
1913 // event. | |
1142 | 1914 if (obj->klass() != SystemDictionary::Class_klass()) { |
0 | 1915 collector->record_allocation(obj); |
1916 } | |
1917 } | |
1918 } | |
1919 } | |
1920 } | |
1921 | |
1922 void JvmtiExport::post_garbage_collection_finish() { | |
1923 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
1924 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1925 ("JVMTI [%s] garbage collection finish event triggered", | |
1926 JvmtiTrace::safe_get_thread_name(thread))); | |
1927 JvmtiEnvIterator it; | |
1928 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1929 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { | |
1930 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1931 ("JVMTI [%s] garbage collection finish event sent ", | |
1932 JvmtiTrace::safe_get_thread_name(thread))); | |
1933 JvmtiThreadEventTransition jet(thread); | |
1934 // JNIEnv is NULL here because this event is posted from VM Thread | |
1935 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
1936 if (callback != NULL) { | |
1937 (*callback)(env->jvmti_external()); | |
1938 } | |
1939 } | |
1940 } | |
1941 } | |
1942 | |
1943 void JvmtiExport::post_garbage_collection_start() { | |
1944 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
1945 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1946 ("JVMTI [%s] garbage collection start event triggered", | |
1947 JvmtiTrace::safe_get_thread_name(thread))); | |
1948 JvmtiEnvIterator it; | |
1949 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1950 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
1951 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1952 ("JVMTI [%s] garbage collection start event sent ", | |
1953 JvmtiTrace::safe_get_thread_name(thread))); | |
1954 JvmtiThreadEventTransition jet(thread); | |
1955 // JNIEnv is NULL here because this event is posted from VM Thread | |
1956 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
1957 if (callback != NULL) { | |
1958 (*callback)(env->jvmti_external()); | |
1959 } | |
1960 } | |
1961 } | |
1962 } | |
1963 | |
1964 void JvmtiExport::post_data_dump() { | |
1965 Thread *thread = Thread::current(); | |
1966 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1967 ("JVMTI [%s] data dump request event triggered", | |
1968 JvmtiTrace::safe_get_thread_name(thread))); | |
1969 JvmtiEnvIterator it; | |
1970 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1971 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
1972 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1973 ("JVMTI [%s] data dump request event sent ", | |
1974 JvmtiTrace::safe_get_thread_name(thread))); | |
1975 JvmtiThreadEventTransition jet(thread); | |
1976 // JNIEnv is NULL here because this event is posted from VM Thread | |
1977 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
1978 if (callback != NULL) { | |
1979 (*callback)(env->jvmti_external()); | |
1980 } | |
1981 } | |
1982 } | |
1983 } | |
1984 | |
1985 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
1986 oop object = (oop)obj_mntr->object(); | |
1987 if (!ServiceUtil::visible_oop(object)) { | |
1988 // Ignore monitor contended enter for vm internal object. | |
1989 return; | |
1990 } | |
1991 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1992 if (state == NULL) { | |
1993 return; | |
1994 } | |
1995 | |
1996 HandleMark hm(thread); | |
1997 Handle h(thread, object); | |
1998 | |
1999 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2000 ("JVMTI [%s] montior contended enter event triggered", | |
2001 JvmtiTrace::safe_get_thread_name(thread))); | |
2002 | |
2003 JvmtiEnvThreadStateIterator it(state); | |
2004 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2005 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
2006 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2007 ("JVMTI [%s] monitor contended enter event sent", | |
2008 JvmtiTrace::safe_get_thread_name(thread))); | |
2009 JvmtiMonitorEventMark jem(thread, h()); | |
2010 JvmtiEnv *env = ets->get_env(); | |
2011 JvmtiThreadEventTransition jet(thread); | |
2012 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
2013 if (callback != NULL) { | |
2014 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2015 } | |
2016 } | |
2017 } | |
2018 } | |
2019 | |
2020 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
2021 oop object = (oop)obj_mntr->object(); | |
2022 if (!ServiceUtil::visible_oop(object)) { | |
2023 // Ignore monitor contended entered for vm internal object. | |
2024 return; | |
2025 } | |
2026 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2027 if (state == NULL) { | |
2028 return; | |
2029 } | |
2030 | |
2031 HandleMark hm(thread); | |
2032 Handle h(thread, object); | |
2033 | |
2034 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2035 ("JVMTI [%s] montior contended entered event triggered", | |
2036 JvmtiTrace::safe_get_thread_name(thread))); | |
2037 | |
2038 JvmtiEnvThreadStateIterator it(state); | |
2039 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2040 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
2041 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2042 ("JVMTI [%s] monitor contended enter event sent", | |
2043 JvmtiTrace::safe_get_thread_name(thread))); | |
2044 JvmtiMonitorEventMark jem(thread, h()); | |
2045 JvmtiEnv *env = ets->get_env(); | |
2046 JvmtiThreadEventTransition jet(thread); | |
2047 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
2048 if (callback != NULL) { | |
2049 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2050 } | |
2051 } | |
2052 } | |
2053 } | |
2054 | |
2055 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
2056 jlong timeout) { | |
2057 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2058 if (state == NULL) { | |
2059 return; | |
2060 } | |
2061 | |
2062 HandleMark hm(thread); | |
2063 Handle h(thread, object); | |
2064 | |
2065 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2066 ("JVMTI [%s] montior wait event triggered", | |
2067 JvmtiTrace::safe_get_thread_name(thread))); | |
2068 | |
2069 JvmtiEnvThreadStateIterator it(state); | |
2070 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2071 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
2072 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2073 ("JVMTI [%s] monitor wait event sent ", | |
2074 JvmtiTrace::safe_get_thread_name(thread))); | |
2075 JvmtiMonitorEventMark jem(thread, h()); | |
2076 JvmtiEnv *env = ets->get_env(); | |
2077 JvmtiThreadEventTransition jet(thread); | |
2078 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
2079 if (callback != NULL) { | |
2080 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2081 jem.jni_object(), timeout); | |
2082 } | |
2083 } | |
2084 } | |
2085 } | |
2086 | |
2087 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
2088 oop object = (oop)obj_mntr->object(); | |
2089 if (!ServiceUtil::visible_oop(object)) { | |
2090 // Ignore monitor waited for vm internal object. | |
2091 return; | |
2092 } | |
2093 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2094 if (state == NULL) { | |
2095 return; | |
2096 } | |
2097 | |
2098 HandleMark hm(thread); | |
2099 Handle h(thread, object); | |
2100 | |
2101 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2102 ("JVMTI [%s] montior waited event triggered", | |
2103 JvmtiTrace::safe_get_thread_name(thread))); | |
2104 | |
2105 JvmtiEnvThreadStateIterator it(state); | |
2106 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2107 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
2108 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2109 ("JVMTI [%s] monitor waited event sent ", | |
2110 JvmtiTrace::safe_get_thread_name(thread))); | |
2111 JvmtiMonitorEventMark jem(thread, h()); | |
2112 JvmtiEnv *env = ets->get_env(); | |
2113 JvmtiThreadEventTransition jet(thread); | |
2114 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
2115 if (callback != NULL) { | |
2116 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2117 jem.jni_object(), timed_out); | |
2118 } | |
2119 } | |
2120 } | |
2121 } | |
2122 | |
2123 | |
2124 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
2125 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
2126 JvmtiTrace::safe_get_thread_name(thread))); | |
2127 if (object == NULL) { | |
2128 return; | |
2129 } | |
2130 HandleMark hm(thread); | |
2131 Handle h(thread, object); | |
2132 JvmtiEnvIterator it; | |
2133 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2134 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
2135 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
2136 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 2137 object==NULL? "NULL" : java_lang_Class::as_Klass(object)->external_name())); |
0 | 2138 |
2139 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
2140 JvmtiJavaThreadEventTransition jet(thread); | |
2141 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
2142 if (callback != NULL) { | |
2143 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2144 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
2145 } | |
2146 } | |
2147 } | |
2148 } | |
2149 | |
2150 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2151 | |
2152 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
2153 assert(JavaThread::current() == thread, "thread is not current"); | |
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2154 MutexLocker mu(JvmtiThreadState_lock); |
0 | 2155 |
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2156 if (thread->jvmti_thread_state() != NULL) { |
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2157 // This has to happen after the thread state is removed, which is |
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2158 // why it is not in post_thread_end_event like its complement |
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2159 // Maybe both these functions should be rolled into the posts? |
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2160 JvmtiEventController::thread_ended(thread); |
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2161 } |
0 | 2162 } |
2163 | |
2164 void JvmtiExport::oops_do(OopClosure* f) { | |
2165 JvmtiCurrentBreakpoints::oops_do(f); | |
2166 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
2167 } | |
2168 | |
2147
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2169 void JvmtiExport::weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f) { |
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2170 JvmtiTagMap::weak_oops_do(is_alive, f); |
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2171 } |
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2172 |
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2173 void JvmtiExport::gc_epilogue() { |
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2174 JvmtiCurrentBreakpoints::gc_epilogue(); |
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2175 } |
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2176 |
0 | 2177 // Onload raw monitor transition. |
2178 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
2179 JvmtiPendingMonitors::transition_raw_monitors(); | |
2180 } | |
2181 | |
2182 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2183 | |
2184 // type for the Agent_OnAttach entry point | |
2185 extern "C" { | |
2186 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
2187 } | |
2188 | |
2189 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
2190 char ebuf[1024]; | |
2191 char buffer[JVM_MAXPATHLEN]; | |
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2192 void* library = NULL; |
0 | 2193 jint result = JNI_ERR; |
2194 | |
2195 // get agent name and options | |
2196 const char* agent = op->arg(0); | |
2197 const char* absParam = op->arg(1); | |
2198 const char* options = op->arg(2); | |
2199 | |
2200 // The abs paramter should be "true" or "false" | |
2201 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
2202 | |
2203 | |
2204 // If the path is absolute we attempt to load the library. Otherwise we try to | |
2205 // load it from the standard dll directory. | |
2206 | |
2207 if (is_absolute_path) { | |
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2208 library = os::dll_load(agent, ebuf, sizeof ebuf); |
0 | 2209 } else { |
2210 // Try to load the agent from the standard dll directory | |
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2211 if (os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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2212 agent)) { |
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2213 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2214 } |
0 | 2215 if (library == NULL) { |
2216 // not found - try local path | |
2217 char ns[1] = {0}; | |
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2218 if (os::dll_build_name(buffer, sizeof(buffer), ns, agent)) { |
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2219 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2220 } |
0 | 2221 } |
2222 } | |
2223 | |
2224 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
2225 // function | |
2226 if (library != NULL) { | |
2227 | |
2228 // Lookup the Agent_OnAttach function | |
2229 OnAttachEntry_t on_attach_entry = NULL; | |
2230 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; | |
2231 for (uint symbol_index = 0; symbol_index < ARRAY_SIZE(on_attach_symbols); symbol_index++) { | |
2232 on_attach_entry = | |
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2233 CAST_TO_FN_PTR(OnAttachEntry_t, os::dll_lookup(library, on_attach_symbols[symbol_index])); |
0 | 2234 if (on_attach_entry != NULL) break; |
2235 } | |
2236 | |
2237 if (on_attach_entry == NULL) { | |
2238 // Agent_OnAttach missing - unload library | |
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2239 os::dll_unload(library); |
0 | 2240 } else { |
2241 // Invoke the Agent_OnAttach function | |
2242 JavaThread* THREAD = JavaThread::current(); | |
2243 { | |
2244 extern struct JavaVM_ main_vm; | |
2245 JvmtiThreadEventMark jem(THREAD); | |
2246 JvmtiJavaThreadEventTransition jet(THREAD); | |
2247 | |
2248 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
2249 } | |
2250 | |
2251 // Agent_OnAttach may have used JNI | |
2252 if (HAS_PENDING_EXCEPTION) { | |
2253 CLEAR_PENDING_EXCEPTION; | |
2254 } | |
2255 | |
2256 // If OnAttach returns JNI_OK then we add it to the list of | |
2257 // agent libraries so that we can call Agent_OnUnload later. | |
2258 if (result == JNI_OK) { | |
2259 Arguments::add_loaded_agent(agent, (char*)options, is_absolute_path, library); | |
2260 } | |
2261 | |
2262 // Agent_OnAttach executed so completion status is JNI_OK | |
2263 st->print_cr("%d", result); | |
2264 result = JNI_OK; | |
2265 } | |
2266 } | |
2267 return result; | |
2268 } | |
2269 | |
2270 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2271 | |
2272 // Setup current current thread for event collection. | |
2273 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
2274 // set this event collector to be the current one. | |
2275 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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2276 // state can only be NULL if the current thread is exiting which |
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2277 // should not happen since we're trying to configure for event collection |
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2278 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
0 | 2279 if (is_vm_object_alloc_event()) { |
2280 _prev = state->get_vm_object_alloc_event_collector(); | |
2281 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
2282 } else if (is_dynamic_code_event()) { | |
2283 _prev = state->get_dynamic_code_event_collector(); | |
2284 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
2285 } | |
2286 } | |
2287 | |
2288 // Unset current event collection in this thread and reset it with previous | |
2289 // collector. | |
2290 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
2291 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
2292 if (state != NULL) { | |
2293 // restore the previous event collector (if any) | |
2294 if (is_vm_object_alloc_event()) { | |
2295 if (state->get_vm_object_alloc_event_collector() == this) { | |
2296 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
2297 } else { | |
2298 // this thread's jvmti state was created during the scope of | |
2299 // the event collector. | |
2300 } | |
2301 } else { | |
2302 if (is_dynamic_code_event()) { | |
2303 if (state->get_dynamic_code_event_collector() == this) { | |
2304 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
2305 } else { | |
2306 // this thread's jvmti state was created during the scope of | |
2307 // the event collector. | |
2308 } | |
2309 } | |
2310 } | |
2311 } | |
2312 } | |
2313 | |
2314 // create the dynamic code event collector | |
2315 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
2316 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
2317 setup_jvmti_thread_state(); | |
2318 } | |
2319 } | |
2320 | |
2321 // iterate over any code blob descriptors collected and post a | |
2322 // DYNAMIC_CODE_GENERATED event to the profiler. | |
2323 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
2324 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
2325 // iterate over any code blob descriptors that we collected | |
2326 if (_code_blobs != NULL) { | |
2327 for (int i=0; i<_code_blobs->length(); i++) { | |
2328 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
2329 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
2330 FreeHeap(blob); | |
2331 } | |
2332 delete _code_blobs; | |
2333 } | |
2334 unset_jvmti_thread_state(); | |
2335 } | |
2336 | |
2337 // register a stub | |
2338 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
2339 if (_code_blobs == NULL) { | |
6197 | 2340 _code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(1,true); |
0 | 2341 } |
2342 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
2343 } | |
2344 | |
2345 // Setup current thread to record vm allocated objects. | |
2346 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
2347 if (JvmtiExport::should_post_vm_object_alloc()) { | |
2348 _enable = true; | |
2349 setup_jvmti_thread_state(); | |
2350 } else { | |
2351 _enable = false; | |
2352 } | |
2353 } | |
2354 | |
2355 // Post vm_object_alloc event for vm allocated objects visible to java | |
2356 // world. | |
2357 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
2358 if (_allocated != NULL) { | |
2359 set_enabled(false); | |
2360 for (int i = 0; i < _allocated->length(); i++) { | |
2361 oop obj = _allocated->at(i); | |
2362 if (ServiceUtil::visible_oop(obj)) { | |
2363 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
2364 } | |
2365 } | |
2366 delete _allocated; | |
2367 } | |
2368 unset_jvmti_thread_state(); | |
2369 } | |
2370 | |
2371 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
2372 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
2373 if (_allocated == NULL) { | |
6197 | 2374 _allocated = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<oop>(1, true); |
0 | 2375 } |
2376 _allocated->push(obj); | |
2377 } | |
2378 | |
2379 // GC support. | |
2380 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
2381 if (_allocated != NULL) { | |
2382 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
2383 if (_allocated->at(i) != NULL) { | |
2384 f->do_oop(_allocated->adr_at(i)); | |
2385 } | |
2386 } | |
2387 } | |
2388 } | |
2389 | |
2390 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
2391 // no-op if jvmti not enabled | |
2392 if (!JvmtiEnv::environments_might_exist()) { | |
2393 return; | |
2394 } | |
2395 | |
2396 // Runs at safepoint. So no need to acquire Threads_lock. | |
2397 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
2398 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
2399 if (state != NULL) { | |
2400 JvmtiVMObjectAllocEventCollector *collector; | |
2401 collector = state->get_vm_object_alloc_event_collector(); | |
2402 while (collector != NULL) { | |
2403 collector->oops_do(f); | |
2404 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
2405 } | |
2406 } | |
2407 } | |
2408 } | |
2409 | |
2410 | |
2411 // Disable collection of VMObjectAlloc events | |
2412 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
2413 // a no-op if VMObjectAlloc event is not enabled | |
2414 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
2415 return; | |
2416 } | |
2417 Thread* thread = ThreadLocalStorage::thread(); | |
2418 if (thread != NULL && thread->is_Java_thread()) { | |
2419 JavaThread* current_thread = (JavaThread*)thread; | |
2420 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
2421 if (state != NULL) { | |
2422 JvmtiVMObjectAllocEventCollector *collector; | |
2423 collector = state->get_vm_object_alloc_event_collector(); | |
2424 if (collector != NULL && collector->is_enabled()) { | |
2425 _collector = collector; | |
2426 _collector->set_enabled(false); | |
2427 } | |
2428 } | |
2429 } | |
2430 } | |
2431 | |
2432 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
2433 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
2434 if (was_enabled()) { | |
2435 _collector->set_enabled(true); | |
2436 } | |
2437 }; | |
2438 | |
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2439 JvmtiGCMarker::JvmtiGCMarker() { |
0 | 2440 // if there aren't any JVMTI environments then nothing to do |
2441 if (!JvmtiEnv::environments_might_exist()) { | |
2442 return; | |
2443 } | |
2444 | |
2445 if (JvmtiExport::should_post_garbage_collection_start()) { | |
2446 JvmtiExport::post_garbage_collection_start(); | |
2447 } | |
2448 | |
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|
2449 if (SafepointSynchronize::is_at_safepoint()) { |
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diff
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|
2450 // Do clean up tasks that need to be done at a safepoint |
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diff
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|
2451 JvmtiEnvBase::check_for_periodic_clean_up(); |
0 | 2452 } |
2453 } | |
2454 | |
2455 JvmtiGCMarker::~JvmtiGCMarker() { | |
2456 // if there aren't any JVMTI environments then nothing to do | |
2457 if (!JvmtiEnv::environments_might_exist()) { | |
2458 return; | |
2459 } | |
2460 | |
2461 // JVMTI notify gc finish | |
2462 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
2463 JvmtiExport::post_garbage_collection_finish(); | |
2464 } | |
2465 } |