Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvmtiExport.cpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Mon, 18 Sep 2017 18:49:45 +0200 |
parents | f13e777eb255 |
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rev | line source |
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0 | 1 /* |
23614 | 2 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "code/nmethod.hpp" | |
28 #include "code/pcDesc.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "interpreter/interpreter.hpp" | |
31 #include "jvmtifiles/jvmtiEnv.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/objArrayOop.hpp" | |
35 #include "prims/jvmtiCodeBlobEvents.hpp" | |
36 #include "prims/jvmtiEventController.hpp" | |
37 #include "prims/jvmtiEventController.inline.hpp" | |
38 #include "prims/jvmtiExport.hpp" | |
39 #include "prims/jvmtiImpl.hpp" | |
40 #include "prims/jvmtiManageCapabilities.hpp" | |
41 #include "prims/jvmtiRawMonitor.hpp" | |
42 #include "prims/jvmtiTagMap.hpp" | |
43 #include "prims/jvmtiThreadState.inline.hpp" | |
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44 #include "prims/jvmtiRedefineClasses.hpp" |
1972 | 45 #include "runtime/arguments.hpp" |
46 #include "runtime/handles.hpp" | |
47 #include "runtime/interfaceSupport.hpp" | |
48 #include "runtime/objectMonitor.hpp" | |
49 #include "runtime/objectMonitor.inline.hpp" | |
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50 #include "runtime/thread.inline.hpp" |
1972 | 51 #include "runtime/vframe.hpp" |
52 #include "services/attachListener.hpp" | |
53 #include "services/serviceUtil.hpp" | |
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54 #include "utilities/macros.hpp" |
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55 #if INCLUDE_ALL_GCS |
1972 | 56 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" |
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57 #endif // INCLUDE_ALL_GCS |
0 | 58 |
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59 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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60 |
0 | 61 #ifdef JVMTI_TRACE |
62 #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
63 #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
64 #else | |
65 #define EVT_TRIG_TRACE(evt,out) | |
66 #define EVT_TRACE(evt,out) | |
67 #endif | |
68 | |
69 /////////////////////////////////////////////////////////////// | |
70 // | |
71 // JvmtiEventTransition | |
72 // | |
73 // TO DO -- | |
74 // more handle purging | |
75 | |
76 // Use this for JavaThreads and state is _thread_in_vm. | |
77 class JvmtiJavaThreadEventTransition : StackObj { | |
78 private: | |
79 ResourceMark _rm; | |
80 ThreadToNativeFromVM _transition; | |
81 HandleMark _hm; | |
82 | |
83 public: | |
84 JvmtiJavaThreadEventTransition(JavaThread *thread) : | |
85 _rm(), | |
86 _transition(thread), | |
87 _hm(thread) {}; | |
88 }; | |
89 | |
90 // For JavaThreads which are not in _thread_in_vm state | |
91 // and other system threads use this. | |
92 class JvmtiThreadEventTransition : StackObj { | |
93 private: | |
94 ResourceMark _rm; | |
95 HandleMark _hm; | |
96 JavaThreadState _saved_state; | |
97 JavaThread *_jthread; | |
98 | |
99 public: | |
100 JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { | |
101 if (thread->is_Java_thread()) { | |
102 _jthread = (JavaThread *)thread; | |
103 _saved_state = _jthread->thread_state(); | |
104 if (_saved_state == _thread_in_Java) { | |
105 ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); | |
106 } else { | |
107 ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); | |
108 } | |
109 } else { | |
110 _jthread = NULL; | |
111 } | |
112 } | |
113 | |
114 ~JvmtiThreadEventTransition() { | |
115 if (_jthread != NULL) | |
116 ThreadStateTransition::transition_from_native(_jthread, _saved_state); | |
117 } | |
118 }; | |
119 | |
120 | |
121 /////////////////////////////////////////////////////////////// | |
122 // | |
123 // JvmtiEventMark | |
124 // | |
125 | |
126 class JvmtiEventMark : public StackObj { | |
127 private: | |
128 JavaThread *_thread; | |
129 JNIEnv* _jni_env; | |
130 bool _exception_detected; | |
131 bool _exception_caught; | |
132 #if 0 | |
133 JNIHandleBlock* _hblock; | |
134 #endif | |
135 | |
136 public: | |
137 JvmtiEventMark(JavaThread *thread) : _thread(thread), | |
138 _jni_env(thread->jni_environment()) { | |
139 #if 0 | |
140 _hblock = thread->active_handles(); | |
141 _hblock->clear_thoroughly(); // so we can be safe | |
142 #else | |
143 // we want to use the code above - but that needs the JNIHandle changes - later... | |
144 // for now, steal JNI push local frame code | |
145 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
146 // we are before an event. | |
147 // Save current jvmti thread exception state. | |
148 if (state != NULL) { | |
149 _exception_detected = state->is_exception_detected(); | |
150 _exception_caught = state->is_exception_caught(); | |
151 } else { | |
152 _exception_detected = false; | |
153 _exception_caught = false; | |
154 } | |
155 | |
156 JNIHandleBlock* old_handles = thread->active_handles(); | |
157 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
158 assert(new_handles != NULL, "should not be NULL"); | |
159 new_handles->set_pop_frame_link(old_handles); | |
160 thread->set_active_handles(new_handles); | |
161 #endif | |
162 assert(thread == JavaThread::current(), "thread must be current!"); | |
163 thread->frame_anchor()->make_walkable(thread); | |
164 }; | |
165 | |
166 ~JvmtiEventMark() { | |
167 #if 0 | |
168 _hblock->clear(); // for consistency with future correct behavior | |
169 #else | |
170 // we want to use the code above - but that needs the JNIHandle changes - later... | |
171 // for now, steal JNI pop local frame code | |
172 JNIHandleBlock* old_handles = _thread->active_handles(); | |
173 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); | |
174 assert(new_handles != NULL, "should not be NULL"); | |
175 _thread->set_active_handles(new_handles); | |
176 // Note that we set the pop_frame_link to NULL explicitly, otherwise | |
177 // the release_block call will release the blocks. | |
178 old_handles->set_pop_frame_link(NULL); | |
179 JNIHandleBlock::release_block(old_handles, _thread); // may block | |
180 #endif | |
181 | |
182 JvmtiThreadState* state = _thread->jvmti_thread_state(); | |
183 // we are continuing after an event. | |
184 if (state != NULL) { | |
185 // Restore the jvmti thread exception state. | |
186 if (_exception_detected) { | |
187 state->set_exception_detected(); | |
188 } | |
189 if (_exception_caught) { | |
190 state->set_exception_caught(); | |
191 } | |
192 } | |
193 } | |
194 | |
195 #if 0 | |
196 jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } | |
197 #else | |
198 // we want to use the code above - but that needs the JNIHandle changes - later... | |
199 // for now, use regular make_local | |
200 jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } | |
201 #endif | |
202 | |
6983 | 203 jclass to_jclass(Klass* klass) { return (klass == NULL ? NULL : (jclass)to_jobject(klass->java_mirror())); } |
0 | 204 |
205 jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } | |
206 | |
207 JNIEnv* jni_env() { return _jni_env; } | |
208 }; | |
209 | |
210 class JvmtiThreadEventMark : public JvmtiEventMark { | |
211 private: | |
212 jthread _jt; | |
213 | |
214 public: | |
215 JvmtiThreadEventMark(JavaThread *thread) : | |
216 JvmtiEventMark(thread) { | |
217 _jt = (jthread)(to_jobject(thread->threadObj())); | |
218 }; | |
219 jthread jni_thread() { return _jt; } | |
220 }; | |
221 | |
222 class JvmtiClassEventMark : public JvmtiThreadEventMark { | |
223 private: | |
224 jclass _jc; | |
225 | |
226 public: | |
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227 JvmtiClassEventMark(JavaThread *thread, Klass* klass) : |
0 | 228 JvmtiThreadEventMark(thread) { |
229 _jc = to_jclass(klass); | |
230 }; | |
231 jclass jni_class() { return _jc; } | |
232 }; | |
233 | |
234 class JvmtiMethodEventMark : public JvmtiThreadEventMark { | |
235 private: | |
236 jmethodID _mid; | |
237 | |
238 public: | |
239 JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : | |
240 JvmtiThreadEventMark(thread), | |
241 _mid(to_jmethodID(method)) {}; | |
242 jmethodID jni_methodID() { return _mid; } | |
243 }; | |
244 | |
245 class JvmtiLocationEventMark : public JvmtiMethodEventMark { | |
246 private: | |
247 jlocation _loc; | |
248 | |
249 public: | |
250 JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : | |
251 JvmtiMethodEventMark(thread, method), | |
252 _loc(location - method->code_base()) {}; | |
253 jlocation location() { return _loc; } | |
254 }; | |
255 | |
256 class JvmtiExceptionEventMark : public JvmtiLocationEventMark { | |
257 private: | |
258 jobject _exc; | |
259 | |
260 public: | |
261 JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : | |
262 JvmtiLocationEventMark(thread, method, location), | |
263 _exc(to_jobject(exception())) {}; | |
264 jobject exception() { return _exc; } | |
265 }; | |
266 | |
267 class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { | |
268 private: | |
269 const char *_class_name; | |
270 jobject _jloader; | |
271 jobject _protection_domain; | |
272 jclass _class_being_redefined; | |
273 | |
274 public: | |
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275 JvmtiClassFileLoadEventMark(JavaThread *thread, Symbol* name, |
0 | 276 Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { |
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277 _class_name = name != NULL? name->as_utf8() : NULL; |
0 | 278 _jloader = (jobject)to_jobject(class_loader()); |
279 _protection_domain = (jobject)to_jobject(prot_domain()); | |
280 if (class_being_redefined == NULL) { | |
281 _class_being_redefined = NULL; | |
282 } else { | |
283 _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); | |
284 } | |
285 }; | |
286 const char *class_name() { | |
287 return _class_name; | |
288 } | |
289 jobject jloader() { | |
290 return _jloader; | |
291 } | |
292 jobject protection_domain() { | |
293 return _protection_domain; | |
294 } | |
295 jclass class_being_redefined() { | |
296 return _class_being_redefined; | |
297 } | |
298 }; | |
299 | |
300 ////////////////////////////////////////////////////////////////////////////// | |
301 | |
302 int JvmtiExport::_field_access_count = 0; | |
303 int JvmtiExport::_field_modification_count = 0; | |
304 | |
305 bool JvmtiExport::_can_access_local_variables = false; | |
306 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
307 bool JvmtiExport::_can_modify_any_class = false; | |
308 bool JvmtiExport::_can_walk_any_space = false; | |
309 | |
310 bool JvmtiExport::_has_redefined_a_class = false; | |
311 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
312 | |
313 // | |
314 // field access management | |
315 // | |
316 | |
317 // interpreter generator needs the address of the counter | |
318 address JvmtiExport::get_field_access_count_addr() { | |
319 // We don't grab a lock because we don't want to | |
320 // serialize field access between all threads. This means that a | |
321 // thread on another processor can see the wrong count value and | |
322 // may either miss making a needed call into post_field_access() | |
323 // or will make an unneeded call into post_field_access(). We pay | |
324 // this price to avoid slowing down the VM when we aren't watching | |
325 // field accesses. | |
326 // Other access/mutation safe by virtue of being in VM state. | |
327 return (address)(&_field_access_count); | |
328 } | |
329 | |
330 // | |
331 // field modification management | |
332 // | |
333 | |
334 // interpreter generator needs the address of the counter | |
335 address JvmtiExport::get_field_modification_count_addr() { | |
336 // We don't grab a lock because we don't | |
337 // want to serialize field modification between all threads. This | |
338 // means that a thread on another processor can see the wrong | |
339 // count value and may either miss making a needed call into | |
340 // post_field_modification() or will make an unneeded call into | |
341 // post_field_modification(). We pay this price to avoid slowing | |
342 // down the VM when we aren't watching field modifications. | |
343 // Other access/mutation safe by virtue of being in VM state. | |
344 return (address)(&_field_modification_count); | |
345 } | |
346 | |
347 | |
348 /////////////////////////////////////////////////////////////// | |
349 // Functions needed by java.lang.instrument for starting up javaagent. | |
350 /////////////////////////////////////////////////////////////// | |
351 | |
352 jint | |
353 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
1121 | 354 // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
355 // has already been validated in JNI GetEnv(). | |
356 int major, minor, micro; | |
357 | |
358 // micro version doesn't matter here (yet?) | |
359 decode_version_values(version, &major, &minor, µ); | |
360 switch (major) { | |
1988 | 361 case 1: |
1121 | 362 switch (minor) { |
1988 | 363 case 0: // version 1.0.<micro> is recognized |
364 case 1: // version 1.1.<micro> is recognized | |
365 case 2: // version 1.2.<micro> is recognized | |
1121 | 366 break; |
367 | |
1988 | 368 default: |
1121 | 369 return JNI_EVERSION; // unsupported minor version number |
370 } | |
371 break; | |
1988 | 372 default: |
1121 | 373 return JNI_EVERSION; // unsupported major version number |
374 } | |
0 | 375 |
376 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
377 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
378 // transition code: native to VM | |
379 ThreadInVMfromNative __tiv(current_thread); | |
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380 VM_ENTRY_BASE(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) |
0 | 381 debug_only(VMNativeEntryWrapper __vew;) |
382 | |
1121 | 383 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 384 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
385 return JNI_OK; | |
386 | |
387 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
388 // not live, no thread to transition | |
1121 | 389 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
0 | 390 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
391 return JNI_OK; | |
392 | |
393 } else { | |
394 // Called at the wrong time | |
395 *penv = NULL; | |
396 return JNI_EDETACHED; | |
397 } | |
398 } | |
399 | |
1121 | 400 |
401 void | |
402 JvmtiExport::decode_version_values(jint version, int * major, int * minor, | |
403 int * micro) { | |
404 *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; | |
405 *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; | |
406 *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; | |
407 } | |
408 | |
0 | 409 void JvmtiExport::enter_primordial_phase() { |
410 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
411 } | |
412 | |
413 void JvmtiExport::enter_start_phase() { | |
414 JvmtiManageCapabilities::recompute_always_capabilities(); | |
415 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
416 } | |
417 | |
418 void JvmtiExport::enter_onload_phase() { | |
419 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
420 } | |
421 | |
422 void JvmtiExport::enter_live_phase() { | |
423 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
424 } | |
425 | |
426 // | |
427 // JVMTI events that the VM posts to the debugger and also startup agent | |
428 // and call the agent's premain() for java.lang.instrument. | |
429 // | |
430 | |
431 void JvmtiExport::post_vm_start() { | |
432 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
433 | |
434 // can now enable some events | |
435 JvmtiEventController::vm_start(); | |
436 | |
437 JvmtiEnvIterator it; | |
438 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
439 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
440 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
441 | |
442 JavaThread *thread = JavaThread::current(); | |
443 JvmtiThreadEventMark jem(thread); | |
444 JvmtiJavaThreadEventTransition jet(thread); | |
445 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
446 if (callback != NULL) { | |
447 (*callback)(env->jvmti_external(), jem.jni_env()); | |
448 } | |
449 } | |
450 } | |
451 } | |
452 | |
453 | |
454 void JvmtiExport::post_vm_initialized() { | |
455 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
456 | |
457 // can now enable events | |
458 JvmtiEventController::vm_init(); | |
459 | |
460 JvmtiEnvIterator it; | |
461 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
462 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
463 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
464 | |
465 JavaThread *thread = JavaThread::current(); | |
466 JvmtiThreadEventMark jem(thread); | |
467 JvmtiJavaThreadEventTransition jet(thread); | |
468 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
469 if (callback != NULL) { | |
470 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
471 } | |
472 } | |
473 } | |
474 } | |
475 | |
476 | |
477 void JvmtiExport::post_vm_death() { | |
478 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
479 | |
480 JvmtiEnvIterator it; | |
481 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
482 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
483 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
484 | |
485 JavaThread *thread = JavaThread::current(); | |
486 JvmtiEventMark jem(thread); | |
487 JvmtiJavaThreadEventTransition jet(thread); | |
488 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
489 if (callback != NULL) { | |
490 (*callback)(env->jvmti_external(), jem.jni_env()); | |
491 } | |
492 } | |
493 } | |
494 | |
495 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
496 JvmtiEventController::vm_death(); | |
497 } | |
498 | |
499 char** | |
500 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
501 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
502 // go away while we iterate them. No locks during VM bring-up. | |
503 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
504 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
505 } else { | |
506 MutexLocker mu(JvmtiThreadState_lock); | |
507 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
508 } | |
509 } | |
510 | |
511 class JvmtiClassFileLoadHookPoster : public StackObj { | |
512 private: | |
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513 Symbol* _h_name; |
0 | 514 Handle _class_loader; |
515 Handle _h_protection_domain; | |
516 unsigned char ** _data_ptr; | |
517 unsigned char ** _end_ptr; | |
518 JavaThread * _thread; | |
519 jint _curr_len; | |
520 unsigned char * _curr_data; | |
521 JvmtiEnv * _curr_env; | |
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522 JvmtiCachedClassFileData ** _cached_class_file_ptr; |
0 | 523 JvmtiThreadState * _state; |
524 KlassHandle * _h_class_being_redefined; | |
525 JvmtiClassLoadKind _load_kind; | |
526 | |
527 public: | |
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528 inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
0 | 529 Handle h_protection_domain, |
530 unsigned char **data_ptr, unsigned char **end_ptr, | |
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531 JvmtiCachedClassFileData **cache_ptr) { |
0 | 532 _h_name = h_name; |
533 _class_loader = class_loader; | |
534 _h_protection_domain = h_protection_domain; | |
535 _data_ptr = data_ptr; | |
536 _end_ptr = end_ptr; | |
537 _thread = JavaThread::current(); | |
538 _curr_len = *end_ptr - *data_ptr; | |
539 _curr_data = *data_ptr; | |
540 _curr_env = NULL; | |
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541 _cached_class_file_ptr = cache_ptr; |
0 | 542 |
543 _state = _thread->jvmti_thread_state(); | |
544 if (_state != NULL) { | |
545 _h_class_being_redefined = _state->get_class_being_redefined(); | |
546 _load_kind = _state->get_class_load_kind(); | |
547 // Clear class_being_redefined flag here. The action | |
548 // from agent handler could generate a new class file load | |
549 // hook event and if it is not cleared the new event generated | |
550 // from regular class file load could have this stale redefined | |
551 // class handle info. | |
552 _state->clear_class_being_redefined(); | |
553 } else { | |
554 // redefine and retransform will always set the thread state | |
555 _h_class_being_redefined = (KlassHandle *) NULL; | |
556 _load_kind = jvmti_class_load_kind_load; | |
557 } | |
558 } | |
559 | |
560 void post() { | |
561 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
562 // ("JVMTI [%s] class file load hook event triggered", | |
563 // JvmtiTrace::safe_get_thread_name(_thread))); | |
564 post_all_envs(); | |
565 copy_modified_data(); | |
566 } | |
567 | |
568 private: | |
569 void post_all_envs() { | |
570 if (_load_kind != jvmti_class_load_kind_retransform) { | |
571 // for class load and redefine, | |
572 // call the non-retransformable agents | |
573 JvmtiEnvIterator it; | |
574 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
575 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
576 // non-retransformable agents cannot retransform back, | |
577 // so no need to cache the original class file bytes | |
578 post_to_env(env, false); | |
579 } | |
580 } | |
581 } | |
582 JvmtiEnvIterator it; | |
583 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
584 // retransformable agents get all events | |
585 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
586 // retransformable agents need to cache the original class file | |
587 // bytes if changes are made via the ClassFileLoadHook | |
588 post_to_env(env, true); | |
589 } | |
590 } | |
591 } | |
592 | |
593 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
594 unsigned char *new_data = NULL; | |
595 jint new_len = 0; | |
596 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
597 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
598 // JvmtiTrace::safe_get_thread_name(_thread), | |
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599 // _h_name == NULL ? "NULL" : _h_name->as_utf8(), |
0 | 600 // _curr_data, _curr_len )); |
601 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
602 _h_protection_domain, | |
603 _h_class_being_redefined); | |
604 JvmtiJavaThreadEventTransition jet(_thread); | |
605 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
606 NULL : jem.jni_env(); | |
607 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
608 if (callback != NULL) { | |
609 (*callback)(env->jvmti_external(), jni_env, | |
610 jem.class_being_redefined(), | |
611 jem.jloader(), jem.class_name(), | |
612 jem.protection_domain(), | |
613 _curr_len, _curr_data, | |
614 &new_len, &new_data); | |
615 } | |
616 if (new_data != NULL) { | |
617 // this agent has modified class data. | |
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618 if (caching_needed && *_cached_class_file_ptr == NULL) { |
0 | 619 // data has been changed by the new retransformable agent |
620 // and it hasn't already been cached, cache it | |
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621 JvmtiCachedClassFileData *p; |
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622 p = (JvmtiCachedClassFileData *)os::malloc( |
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623 offset_of(JvmtiCachedClassFileData, data) + _curr_len, mtInternal); |
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624 if (p == NULL) { |
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625 vm_exit_out_of_memory(offset_of(JvmtiCachedClassFileData, data) + _curr_len, |
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626 OOM_MALLOC_ERROR, |
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627 "unable to allocate cached copy of original class bytes"); |
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628 } |
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629 p->length = _curr_len; |
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630 memcpy(p->data, _curr_data, _curr_len); |
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631 *_cached_class_file_ptr = p; |
0 | 632 } |
633 | |
634 if (_curr_data != *_data_ptr) { | |
635 // curr_data is previous agent modified class data. | |
636 // And this has been changed by the new agent so | |
637 // we can delete it now. | |
638 _curr_env->Deallocate(_curr_data); | |
639 } | |
640 | |
641 // Class file data has changed by the current agent. | |
642 _curr_data = new_data; | |
643 _curr_len = new_len; | |
644 // Save the current agent env we need this to deallocate the | |
645 // memory allocated by this agent. | |
646 _curr_env = env; | |
647 } | |
648 } | |
649 | |
650 void copy_modified_data() { | |
651 // if one of the agent has modified class file data. | |
652 // Copy modified class data to new resources array. | |
653 if (_curr_data != *_data_ptr) { | |
654 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
655 memcpy(*_data_ptr, _curr_data, _curr_len); | |
656 *_end_ptr = *_data_ptr + _curr_len; | |
657 _curr_env->Deallocate(_curr_data); | |
658 } | |
659 } | |
660 }; | |
661 | |
662 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
663 | |
664 // this entry is for class file load hook on class load, redefine and retransform | |
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665 void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
0 | 666 Handle class_loader, |
667 Handle h_protection_domain, | |
668 unsigned char **data_ptr, | |
669 unsigned char **end_ptr, | |
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670 JvmtiCachedClassFileData **cache_ptr) { |
0 | 671 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, |
672 h_protection_domain, | |
673 data_ptr, end_ptr, | |
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674 cache_ptr); |
0 | 675 poster.post(); |
676 } | |
677 | |
678 void JvmtiExport::report_unsupported(bool on) { | |
679 // If any JVMTI service is turned on, we need to exit before native code | |
680 // tries to access nonexistant services. | |
681 if (on) { | |
682 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
683 } | |
684 } | |
685 | |
686 | |
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687 static inline Klass* oop_to_klass(oop obj) { |
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688 Klass* k = obj->klass(); |
0 | 689 |
690 // if the object is a java.lang.Class then return the java mirror | |
1142 | 691 if (k == SystemDictionary::Class_klass()) { |
0 | 692 if (!java_lang_Class::is_primitive(obj)) { |
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693 k = java_lang_Class::as_Klass(obj); |
0 | 694 assert(k != NULL, "class for non-primitive mirror must exist"); |
695 } | |
696 } | |
697 return k; | |
698 } | |
699 | |
700 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
701 private: | |
702 jobject _jobj; | |
703 jlong _size; | |
704 public: | |
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705 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klass(obj)) { |
0 | 706 _jobj = (jobject)to_jobject(obj); |
707 _size = obj->size() * wordSize; | |
708 }; | |
709 jobject jni_jobject() { return _jobj; } | |
710 jlong size() { return _size; } | |
711 }; | |
712 | |
713 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
714 private: | |
715 jint _code_size; | |
716 const void *_code_data; | |
717 jint _map_length; | |
718 jvmtiAddrLocationMap *_map; | |
719 const void *_compile_info; | |
720 public: | |
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721 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
0 | 722 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
1748 | 723 _code_data = nm->insts_begin(); |
724 _code_size = nm->insts_size(); | |
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725 _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
0 | 726 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
727 } | |
728 ~JvmtiCompiledMethodLoadEventMark() { | |
6197 | 729 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map, mtInternal); |
0 | 730 } |
731 | |
732 jint code_size() { return _code_size; } | |
733 const void *code_data() { return _code_data; } | |
734 jint map_length() { return _map_length; } | |
735 const jvmtiAddrLocationMap* map() { return _map; } | |
736 const void *compile_info() { return _compile_info; } | |
737 }; | |
738 | |
739 | |
740 | |
741 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
742 private: | |
743 jobject _jobj; | |
744 public: | |
745 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
746 : JvmtiThreadEventMark(thread){ | |
747 _jobj = to_jobject(object); | |
748 } | |
749 jobject jni_object() { return _jobj; } | |
750 }; | |
751 | |
752 /////////////////////////////////////////////////////////////// | |
753 // | |
754 // pending CompiledMethodUnload support | |
755 // | |
756 | |
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757 void JvmtiExport::post_compiled_method_unload( |
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758 jmethodID method, const void *code_begin) { |
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759 JavaThread* thread = JavaThread::current(); |
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760 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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761 ("JVMTI [%s] method compile unload event triggered", |
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762 JvmtiTrace::safe_get_thread_name(thread))); |
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763 |
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764 // post the event for each environment that has this event enabled. |
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765 JvmtiEnvIterator it; |
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766 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
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767 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
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768 |
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769 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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770 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
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771 JvmtiTrace::safe_get_thread_name(thread), method)); |
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772 |
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773 ResourceMark rm(thread); |
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774 |
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775 JvmtiEventMark jem(thread); |
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776 JvmtiJavaThreadEventTransition jet(thread); |
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777 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
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778 if (callback != NULL) { |
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779 (*callback)(env->jvmti_external(), method, code_begin); |
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780 } |
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781 } |
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782 } |
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783 } |
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784 |
0 | 785 /////////////////////////////////////////////////////////////// |
786 // | |
787 // JvmtiExport | |
788 // | |
789 | |
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790 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, Method* method, address location) { |
0 | 791 HandleMark hm(thread); |
792 methodHandle mh(thread, method); | |
793 | |
794 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
795 if (state == NULL) { | |
796 return; | |
797 } | |
798 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
799 JvmtiTrace::safe_get_thread_name(thread))); | |
800 JvmtiEnvThreadStateIterator it(state); | |
801 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
802 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
803 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
804 ThreadState old_os_state = thread->osthread()->get_state(); | |
805 thread->osthread()->set_state(BREAKPOINTED); | |
806 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
807 JvmtiTrace::safe_get_thread_name(thread), | |
808 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
809 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
810 location - mh()->code_base() )); | |
811 | |
812 JvmtiEnv *env = ets->get_env(); | |
813 JvmtiLocationEventMark jem(thread, mh, location); | |
814 JvmtiJavaThreadEventTransition jet(thread); | |
815 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
816 if (callback != NULL) { | |
817 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
818 jem.jni_methodID(), jem.location()); | |
819 } | |
820 | |
821 ets->set_breakpoint_posted(); | |
822 thread->osthread()->set_state(old_os_state); | |
823 } | |
824 } | |
825 } | |
826 | |
827 ////////////////////////////////////////////////////////////////////////////// | |
828 | |
829 bool JvmtiExport::_can_get_source_debug_extension = false; | |
830 bool JvmtiExport::_can_maintain_original_method_order = false; | |
831 bool JvmtiExport::_can_post_interpreter_events = false; | |
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832 bool JvmtiExport::_can_post_on_exceptions = false; |
0 | 833 bool JvmtiExport::_can_post_breakpoint = false; |
834 bool JvmtiExport::_can_post_field_access = false; | |
835 bool JvmtiExport::_can_post_field_modification = false; | |
836 bool JvmtiExport::_can_post_method_entry = false; | |
837 bool JvmtiExport::_can_post_method_exit = false; | |
838 bool JvmtiExport::_can_pop_frame = false; | |
839 bool JvmtiExport::_can_force_early_return = false; | |
840 | |
841 bool JvmtiExport::_should_post_single_step = false; | |
842 bool JvmtiExport::_should_post_field_access = false; | |
843 bool JvmtiExport::_should_post_field_modification = false; | |
844 bool JvmtiExport::_should_post_class_load = false; | |
845 bool JvmtiExport::_should_post_class_prepare = false; | |
846 bool JvmtiExport::_should_post_class_unload = false; | |
847 bool JvmtiExport::_should_post_thread_life = false; | |
848 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
849 bool JvmtiExport::_should_post_native_method_bind = false; | |
850 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
851 bool JvmtiExport::_should_post_data_dump = false; | |
852 bool JvmtiExport::_should_post_compiled_method_load = false; | |
853 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
854 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
855 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
856 bool JvmtiExport::_should_post_monitor_wait = false; | |
857 bool JvmtiExport::_should_post_monitor_waited = false; | |
858 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
859 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
860 bool JvmtiExport::_should_post_object_free = false; | |
861 bool JvmtiExport::_should_post_resource_exhausted = false; | |
862 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
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863 bool JvmtiExport::_should_post_on_exceptions = false; |
0 | 864 |
865 //////////////////////////////////////////////////////////////////////////////////////////////// | |
866 | |
867 | |
868 // | |
869 // JVMTI single step management | |
870 // | |
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871 void JvmtiExport::at_single_stepping_point(JavaThread *thread, Method* method, address location) { |
0 | 872 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); |
873 | |
874 HandleMark hm(thread); | |
875 methodHandle mh(thread, method); | |
876 | |
877 // update information about current location and post a step event | |
878 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
879 if (state == NULL) { | |
880 return; | |
881 } | |
882 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
883 JvmtiTrace::safe_get_thread_name(thread))); | |
884 if (!state->hide_single_stepping()) { | |
885 if (state->is_pending_step_for_popframe()) { | |
886 state->process_pending_step_for_popframe(); | |
887 } | |
888 if (state->is_pending_step_for_earlyret()) { | |
889 state->process_pending_step_for_earlyret(); | |
890 } | |
891 JvmtiExport::post_single_step(thread, mh(), location); | |
892 } | |
893 } | |
894 | |
895 | |
896 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
897 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
898 if (state != NULL) { | |
899 state->clear_hide_single_stepping(); | |
900 } | |
901 } | |
902 | |
903 | |
904 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
905 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
906 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
907 state->set_hide_single_stepping(); | |
908 return true; | |
909 } else { | |
910 return false; | |
911 } | |
912 } | |
913 | |
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914 void JvmtiExport::post_class_load(JavaThread *thread, Klass* klass) { |
0 | 915 HandleMark hm(thread); |
916 KlassHandle kh(thread, klass); | |
917 | |
918 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
919 JvmtiTrace::safe_get_thread_name(thread))); | |
920 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
921 if (state == NULL) { | |
922 return; | |
923 } | |
924 JvmtiEnvThreadStateIterator it(state); | |
925 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
926 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
927 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
928 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 929 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 930 |
931 JvmtiEnv *env = ets->get_env(); | |
932 JvmtiClassEventMark jem(thread, kh()); | |
933 JvmtiJavaThreadEventTransition jet(thread); | |
934 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
935 if (callback != NULL) { | |
936 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
937 } | |
938 } | |
939 } | |
940 } | |
941 | |
942 | |
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943 void JvmtiExport::post_class_prepare(JavaThread *thread, Klass* klass) { |
0 | 944 HandleMark hm(thread); |
945 KlassHandle kh(thread, klass); | |
946 | |
947 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
948 JvmtiTrace::safe_get_thread_name(thread))); | |
949 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
950 if (state == NULL) { | |
951 return; | |
952 } | |
953 JvmtiEnvThreadStateIterator it(state); | |
954 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
955 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
956 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
957 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 958 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 959 |
960 JvmtiEnv *env = ets->get_env(); | |
961 JvmtiClassEventMark jem(thread, kh()); | |
962 JvmtiJavaThreadEventTransition jet(thread); | |
963 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
964 if (callback != NULL) { | |
965 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
966 } | |
967 } | |
968 } | |
969 } | |
970 | |
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971 void JvmtiExport::post_class_unload(Klass* klass) { |
0 | 972 Thread *thread = Thread::current(); |
973 HandleMark hm(thread); | |
974 KlassHandle kh(thread, klass); | |
975 | |
976 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
977 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
978 assert(thread->is_VM_thread(), "wrong thread"); | |
979 | |
980 // get JavaThread for whom we are proxy | |
981 JavaThread *real_thread = | |
982 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
983 | |
984 JvmtiEnvIterator it; | |
985 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
986 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
987 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
6983 | 988 kh()==NULL? "NULL" : kh()->external_name() )); |
0 | 989 |
990 // do everything manually, since this is a proxy - needs special care | |
991 JNIEnv* jni_env = real_thread->jni_environment(); | |
992 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
6983 | 993 jclass jk = (jclass)JNIHandles::make_local(real_thread, kh()->java_mirror()); |
0 | 994 |
995 // Before we call the JVMTI agent, we have to set the state in the | |
996 // thread for which we are proxying. | |
997 JavaThreadState prev_state = real_thread->thread_state(); | |
23832 | 998 assert(((Thread *)real_thread)->is_ConcurrentGC_thread() || |
999 (real_thread->is_Java_thread() && prev_state == _thread_blocked), | |
1000 "should be ConcurrentGCThread or JavaThread at safepoint"); | |
0 | 1001 real_thread->set_thread_state(_thread_in_native); |
1002 | |
1003 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
1004 if (callback != NULL) { | |
1005 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
1006 } | |
1007 | |
1008 assert(real_thread->thread_state() == _thread_in_native, | |
1009 "JavaThread should be in native"); | |
1010 real_thread->set_thread_state(prev_state); | |
1011 | |
1012 JNIHandles::destroy_local(jk); | |
1013 JNIHandles::destroy_local(jt); | |
1014 } | |
1015 } | |
1016 } | |
1017 } | |
1018 | |
1019 | |
1020 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
1021 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1022 | |
1023 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
1024 JvmtiTrace::safe_get_thread_name(thread))); | |
1025 | |
1026 // do JVMTI thread initialization (if needed) | |
1027 JvmtiEventController::thread_started(thread); | |
1028 | |
1029 // Do not post thread start event for hidden java thread. | |
1030 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
1031 !thread->is_hidden_from_external_view()) { | |
1032 JvmtiEnvIterator it; | |
1033 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1034 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
1035 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
1036 JvmtiTrace::safe_get_thread_name(thread) )); | |
1037 | |
1038 JvmtiThreadEventMark jem(thread); | |
1039 JvmtiJavaThreadEventTransition jet(thread); | |
1040 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
1041 if (callback != NULL) { | |
1042 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1043 } | |
1044 } | |
1045 } | |
1046 } | |
1047 } | |
1048 | |
1049 | |
1050 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
1051 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
1052 JvmtiTrace::safe_get_thread_name(thread))); | |
1053 | |
1054 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1055 if (state == NULL) { | |
1056 return; | |
1057 } | |
1058 | |
1059 // Do not post thread end event for hidden java thread. | |
1060 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
1061 !thread->is_hidden_from_external_view()) { | |
1062 | |
1063 JvmtiEnvThreadStateIterator it(state); | |
1064 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1065 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
1066 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
1067 JvmtiTrace::safe_get_thread_name(thread) )); | |
1068 | |
1069 JvmtiEnv *env = ets->get_env(); | |
1070 JvmtiThreadEventMark jem(thread); | |
1071 JvmtiJavaThreadEventTransition jet(thread); | |
1072 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
1073 if (callback != NULL) { | |
1074 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
1075 } | |
1076 } | |
1077 } | |
1078 } | |
1079 } | |
1080 | |
1081 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
1082 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
1083 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
1084 | |
1085 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
1086 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
1087 | |
1088 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
1089 if (callback != NULL) { | |
1090 (*callback)(env->jvmti_external(), tag); | |
1091 } | |
1092 } | |
1093 | |
1094 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
1095 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
1096 | |
1097 JvmtiEnvIterator it; | |
1098 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1099 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
1100 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
1101 | |
1102 JavaThread *thread = JavaThread::current(); | |
1103 JvmtiThreadEventMark jem(thread); | |
1104 JvmtiJavaThreadEventTransition jet(thread); | |
1105 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
1106 if (callback != NULL) { | |
1107 (*callback)(env->jvmti_external(), jem.jni_env(), | |
1108 resource_exhausted_flags, NULL, description); | |
1109 } | |
1110 } | |
1111 } | |
1112 } | |
1113 | |
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1114 void JvmtiExport::post_method_entry(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1115 HandleMark hm(thread); |
1116 methodHandle mh(thread, method); | |
1117 | |
1118 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
1119 JvmtiTrace::safe_get_thread_name(thread), | |
1120 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1121 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1122 | |
1123 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
1124 if (state == NULL || !state->is_interp_only_mode()) { | |
1125 // for any thread that actually wants method entry, interp_only_mode is set | |
1126 return; | |
1127 } | |
1128 | |
1129 state->incr_cur_stack_depth(); | |
1130 | |
1131 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1132 JvmtiEnvThreadStateIterator it(state); | |
1133 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1134 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
1135 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
1136 JvmtiTrace::safe_get_thread_name(thread), | |
1137 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1138 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1139 | |
1140 JvmtiEnv *env = ets->get_env(); | |
1141 JvmtiMethodEventMark jem(thread, mh); | |
1142 JvmtiJavaThreadEventTransition jet(thread); | |
1143 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
1144 if (callback != NULL) { | |
1145 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
1146 } | |
1147 } | |
1148 } | |
1149 } | |
1150 } | |
1151 | |
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1152 void JvmtiExport::post_method_exit(JavaThread *thread, Method* method, frame current_frame) { |
0 | 1153 HandleMark hm(thread); |
1154 methodHandle mh(thread, method); | |
1155 | |
1156 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
1157 JvmtiTrace::safe_get_thread_name(thread), | |
1158 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1159 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1160 | |
1161 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1162 if (state == NULL || !state->is_interp_only_mode()) { | |
1163 // for any thread that actually wants method exit, interp_only_mode is set | |
1164 return; | |
1165 } | |
1166 | |
1167 // return a flag when a method terminates by throwing an exception | |
1168 // i.e. if an exception is thrown and it's not caught by the current method | |
1169 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
1170 | |
1171 | |
1172 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1173 Handle result; | |
1174 jvalue value; | |
1175 value.j = 0L; | |
1176 | |
1177 // if the method hasn't been popped because of an exception then we populate | |
1178 // the return_value parameter for the callback. At this point we only have | |
1179 // the address of a "raw result" and we just call into the interpreter to | |
1180 // convert this into a jvalue. | |
1181 if (!exception_exit) { | |
1182 oop oop_result; | |
1183 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
1184 if (type == T_OBJECT || type == T_ARRAY) { | |
1185 result = Handle(thread, oop_result); | |
1186 } | |
1187 } | |
1188 | |
1189 JvmtiEnvThreadStateIterator it(state); | |
1190 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1191 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
1192 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", | |
1193 JvmtiTrace::safe_get_thread_name(thread), | |
1194 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1195 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1196 | |
1197 JvmtiEnv *env = ets->get_env(); | |
1198 JvmtiMethodEventMark jem(thread, mh); | |
1199 if (result.not_null()) { | |
1200 value.l = JNIHandles::make_local(thread, result()); | |
1201 } | |
1202 JvmtiJavaThreadEventTransition jet(thread); | |
1203 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
1204 if (callback != NULL) { | |
1205 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1206 jem.jni_methodID(), exception_exit, value); | |
1207 } | |
1208 } | |
1209 } | |
1210 } | |
1211 | |
1212 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1213 JvmtiEnvThreadStateIterator it(state); | |
1214 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1215 int cur_frame_number = state->cur_stack_depth(); | |
1216 | |
1217 if (ets->is_frame_pop(cur_frame_number)) { | |
1218 // we have a NotifyFramePop entry for this frame. | |
1219 // now check that this env/thread wants this event | |
1220 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
1221 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
1222 JvmtiTrace::safe_get_thread_name(thread), | |
1223 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1224 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
1225 | |
1226 // we also need to issue a frame pop event for this frame | |
1227 JvmtiEnv *env = ets->get_env(); | |
1228 JvmtiMethodEventMark jem(thread, mh); | |
1229 JvmtiJavaThreadEventTransition jet(thread); | |
1230 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
1231 if (callback != NULL) { | |
1232 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1233 jem.jni_methodID(), exception_exit); | |
1234 } | |
1235 } | |
1236 // remove the frame's entry | |
1237 ets->clear_frame_pop(cur_frame_number); | |
1238 } | |
1239 } | |
1240 } | |
1241 | |
1242 state->decr_cur_stack_depth(); | |
1243 } | |
1244 | |
1245 | |
1246 // Todo: inline this for optimization | |
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1247 void JvmtiExport::post_single_step(JavaThread *thread, Method* method, address location) { |
0 | 1248 HandleMark hm(thread); |
1249 methodHandle mh(thread, method); | |
1250 | |
1251 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1252 if (state == NULL) { | |
1253 return; | |
1254 } | |
1255 JvmtiEnvThreadStateIterator it(state); | |
1256 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1257 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
1258 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
1259 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
1260 JvmtiTrace::safe_get_thread_name(thread), | |
1261 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1262 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1263 location - mh()->code_base() )); | |
1264 | |
1265 JvmtiEnv *env = ets->get_env(); | |
1266 JvmtiLocationEventMark jem(thread, mh, location); | |
1267 JvmtiJavaThreadEventTransition jet(thread); | |
1268 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
1269 if (callback != NULL) { | |
1270 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1271 jem.jni_methodID(), jem.location()); | |
1272 } | |
1273 | |
1274 ets->set_single_stepping_posted(); | |
1275 } | |
1276 } | |
1277 } | |
1278 | |
1279 | |
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1280 void JvmtiExport::post_exception_throw(JavaThread *thread, Method* method, address location, oop exception) { |
0 | 1281 HandleMark hm(thread); |
1282 methodHandle mh(thread, method); | |
1283 Handle exception_handle(thread, exception); | |
1284 | |
1285 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1286 if (state == NULL) { | |
1287 return; | |
1288 } | |
1289 | |
1290 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
1291 JvmtiTrace::safe_get_thread_name(thread))); | |
1292 if (!state->is_exception_detected()) { | |
1293 state->set_exception_detected(); | |
1294 JvmtiEnvThreadStateIterator it(state); | |
1295 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1296 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
1297 | |
1298 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
1299 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
1300 JvmtiTrace::safe_get_thread_name(thread), | |
1301 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1302 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1303 location - mh()->code_base() )); | |
1304 | |
1305 JvmtiEnv *env = ets->get_env(); | |
1306 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1307 | |
1308 // It's okay to clear these exceptions here because we duplicate | |
1309 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
1310 EXCEPTION_MARK; | |
1311 | |
1312 bool should_repeat; | |
1313 vframeStream st(thread); | |
1314 assert(!st.at_end(), "cannot be at end"); | |
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1315 Method* current_method = NULL; |
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1316 // A GC may occur during the Method::fast_exception_handler_bci_for() |
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1317 // call below if it needs to load the constraint class. Using a |
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1318 // methodHandle to keep the 'current_method' from being deallocated |
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1319 // if GC happens. |
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1320 methodHandle current_mh = methodHandle(thread, current_method); |
0 | 1321 int current_bci = -1; |
1322 do { | |
1323 current_method = st.method(); | |
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1324 current_mh = methodHandle(thread, current_method); |
0 | 1325 current_bci = st.bci(); |
1326 do { | |
1327 should_repeat = false; | |
1328 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
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1329 current_bci = Method::fast_exception_handler_bci_for( |
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1330 current_mh, eh_klass, current_bci, THREAD); |
0 | 1331 if (HAS_PENDING_EXCEPTION) { |
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1332 exception_handle = Handle(thread, PENDING_EXCEPTION); |
0 | 1333 CLEAR_PENDING_EXCEPTION; |
1334 should_repeat = true; | |
1335 } | |
1336 } while (should_repeat && (current_bci != -1)); | |
1337 st.next(); | |
1338 } while ((current_bci < 0) && (!st.at_end())); | |
1339 | |
1340 jmethodID catch_jmethodID; | |
1341 if (current_bci < 0) { | |
1342 catch_jmethodID = 0; | |
1343 current_bci = 0; | |
1344 } else { | |
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1345 catch_jmethodID = jem.to_jmethodID(current_mh); |
0 | 1346 } |
1347 | |
1348 JvmtiJavaThreadEventTransition jet(thread); | |
1349 jvmtiEventException callback = env->callbacks()->Exception; | |
1350 if (callback != NULL) { | |
1351 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1352 jem.jni_methodID(), jem.location(), | |
1353 jem.exception(), | |
1354 catch_jmethodID, current_bci); | |
1355 } | |
1356 } | |
1357 } | |
1358 } | |
1359 | |
1360 // frames may get popped because of this throw, be safe - invalidate cached depth | |
1361 state->invalidate_cur_stack_depth(); | |
1362 } | |
1363 | |
1364 | |
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1365 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, Method* method, address location, oop exception, bool in_handler_frame) { |
0 | 1366 HandleMark hm(thread); |
1367 methodHandle mh(thread, method); | |
1368 Handle exception_handle(thread, exception); | |
1369 | |
1370 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1371 if (state == NULL) { | |
1372 return; | |
1373 } | |
1374 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1375 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
1376 JvmtiTrace::safe_get_thread_name(thread), | |
1377 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1378 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1379 location==0? "no location:" : "", | |
1380 location==0? 0 : location - mh()->code_base(), | |
1381 in_handler_frame? "in handler frame" : "not handler frame" )); | |
1382 | |
1383 if (state->is_exception_detected()) { | |
1384 | |
1385 state->invalidate_cur_stack_depth(); | |
1386 if (!in_handler_frame) { | |
1387 // Not in exception handler. | |
1388 if(state->is_interp_only_mode()) { | |
1389 // method exit and frame pop events are posted only in interp mode. | |
1390 // When these events are enabled code should be in running in interp mode. | |
1391 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
1392 // The cached cur_stack_depth might have changed from the | |
1393 // operations of frame pop or method exit. We are not 100% sure | |
1394 // the cached cur_stack_depth is still valid depth so invalidate | |
1395 // it. | |
1396 state->invalidate_cur_stack_depth(); | |
1397 } | |
1398 } else { | |
1399 // In exception handler frame. Report exception catch. | |
1400 assert(location != NULL, "must be a known location"); | |
1401 // Update cur_stack_depth - the frames above the current frame | |
1402 // have been unwound due to this exception: | |
1403 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
1404 state->set_exception_caught(); | |
1405 | |
1406 JvmtiEnvThreadStateIterator it(state); | |
1407 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1408 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
1409 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
1410 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
1411 JvmtiTrace::safe_get_thread_name(thread), | |
1412 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1413 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1414 location - mh()->code_base() )); | |
1415 | |
1416 JvmtiEnv *env = ets->get_env(); | |
1417 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
1418 JvmtiJavaThreadEventTransition jet(thread); | |
1419 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
1420 if (callback != NULL) { | |
1421 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1422 jem.jni_methodID(), jem.location(), | |
1423 jem.exception()); | |
1424 } | |
1425 } | |
1426 } | |
1427 } | |
1428 } | |
1429 } | |
1430 | |
1431 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1432 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1433 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1434 // At least one field access watch is set so we have more work | |
1435 // to do. This wrapper is used by entry points that allow us | |
1436 // to create handles in post_field_access_by_jni(). | |
1437 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1438 // event posting can block so refetch oop if we were passed a jobj | |
1439 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1440 } | |
1441 return obj; | |
1442 } | |
1443 | |
1444 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1445 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1446 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
1447 // At least one field access watch is set so we have more work | |
1448 // to do. This wrapper is used by "quick" entry points that don't | |
1449 // allow us to create handles in post_field_access_by_jni(). We | |
1450 // override that with a ResetNoHandleMark. | |
1451 ResetNoHandleMark rnhm; | |
1452 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
1453 // event posting can block so refetch oop if we were passed a jobj | |
1454 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1455 } | |
1456 return obj; | |
1457 } | |
1458 | |
1459 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
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1460 Klass* klass, jfieldID fieldID, bool is_static) { |
0 | 1461 // We must be called with a Java context in order to provide reasonable |
1462 // values for the klazz, method, and location fields. The callers of this | |
1463 // function don't make the call unless there is a Java context. | |
1464 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
1465 | |
1466 ResourceMark rm; | |
1467 fieldDescriptor fd; | |
1468 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1469 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1470 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
1471 if (!valid_fieldID) return; | |
1472 // field accesses are not watched so bail | |
1473 if (!fd.is_field_access_watched()) return; | |
1474 | |
1475 HandleMark hm(thread); | |
1476 KlassHandle h_klass(thread, klass); | |
1477 Handle h_obj; | |
1478 if (!is_static) { | |
1479 // non-static field accessors have an object, but we need a handle | |
1480 assert(obj != NULL, "non-static needs an object"); | |
1481 h_obj = Handle(thread, obj); | |
1482 } | |
1483 post_field_access(thread, | |
1484 thread->last_frame().interpreter_frame_method(), | |
1485 thread->last_frame().interpreter_frame_bcp(), | |
1486 h_klass, h_obj, fieldID); | |
1487 } | |
1488 | |
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1489 void JvmtiExport::post_field_access(JavaThread *thread, Method* method, |
0 | 1490 address location, KlassHandle field_klass, Handle object, jfieldID field) { |
1491 | |
1492 HandleMark hm(thread); | |
1493 methodHandle mh(thread, method); | |
1494 | |
1495 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1496 if (state == NULL) { | |
1497 return; | |
1498 } | |
1499 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
1500 JvmtiTrace::safe_get_thread_name(thread))); | |
1501 JvmtiEnvThreadStateIterator it(state); | |
1502 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1503 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
1504 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
1505 JvmtiTrace::safe_get_thread_name(thread), | |
1506 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1507 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1508 location - mh()->code_base() )); | |
1509 | |
1510 JvmtiEnv *env = ets->get_env(); | |
1511 JvmtiLocationEventMark jem(thread, mh, location); | |
1512 jclass field_jclass = jem.to_jclass(field_klass()); | |
1513 jobject field_jobject = jem.to_jobject(object()); | |
1514 JvmtiJavaThreadEventTransition jet(thread); | |
1515 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
1516 if (callback != NULL) { | |
1517 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1518 jem.jni_methodID(), jem.location(), | |
1519 field_jclass, field_jobject, field); | |
1520 } | |
1521 } | |
1522 } | |
1523 } | |
1524 | |
1525 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
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1526 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1527 char sig_type, jvalue *value) { |
1528 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1529 // At least one field modification watch is set so we have more work | |
1530 // to do. This wrapper is used by entry points that allow us | |
1531 // to create handles in post_field_modification_by_jni(). | |
1532 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1533 // event posting can block so refetch oop if we were passed a jobj | |
1534 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1535 } | |
1536 return obj; | |
1537 } | |
1538 | |
1539 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
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1540 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1541 char sig_type, jvalue *value) { |
1542 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
1543 // At least one field modification watch is set so we have more work | |
1544 // to do. This wrapper is used by "quick" entry points that don't | |
1545 // allow us to create handles in post_field_modification_by_jni(). We | |
1546 // override that with a ResetNoHandleMark. | |
1547 ResetNoHandleMark rnhm; | |
1548 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
1549 // event posting can block so refetch oop if we were passed a jobj | |
1550 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
1551 } | |
1552 return obj; | |
1553 } | |
1554 | |
1555 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
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1556 Klass* klass, jfieldID fieldID, bool is_static, |
0 | 1557 char sig_type, jvalue *value) { |
1558 // We must be called with a Java context in order to provide reasonable | |
1559 // values for the klazz, method, and location fields. The callers of this | |
1560 // function don't make the call unless there is a Java context. | |
1561 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
1562 | |
1563 ResourceMark rm; | |
1564 fieldDescriptor fd; | |
1565 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
1566 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
1567 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
1568 if (!valid_fieldID) return; | |
1569 // field modifications are not watched so bail | |
1570 if (!fd.is_field_modification_watched()) return; | |
1571 | |
1572 HandleMark hm(thread); | |
1573 | |
1574 Handle h_obj; | |
1575 if (!is_static) { | |
1576 // non-static field accessors have an object, but we need a handle | |
1577 assert(obj != NULL, "non-static needs an object"); | |
1578 h_obj = Handle(thread, obj); | |
1579 } | |
1580 KlassHandle h_klass(thread, klass); | |
1581 post_field_modification(thread, | |
1582 thread->last_frame().interpreter_frame_method(), | |
1583 thread->last_frame().interpreter_frame_bcp(), | |
1584 h_klass, h_obj, fieldID, sig_type, value); | |
1585 } | |
1586 | |
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1587 void JvmtiExport::post_raw_field_modification(JavaThread *thread, Method* method, |
0 | 1588 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1589 char sig_type, jvalue *value) { | |
1590 | |
23614 | 1591 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'B' || sig_type == 'C' || sig_type == 'S') { |
0 | 1592 // 'I' instructions are used for byte, char, short and int. |
1593 // determine which it really is, and convert | |
1594 fieldDescriptor fd; | |
1595 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
1596 // should be found (if not, leave as is) | |
1597 if (found) { | |
1598 jint ival = value->i; | |
1599 // convert value from int to appropriate type | |
1600 switch (fd.field_type()) { | |
1601 case T_BOOLEAN: | |
1602 sig_type = 'Z'; | |
1603 value->i = 0; // clear it | |
1604 value->z = (jboolean)ival; | |
1605 break; | |
1606 case T_BYTE: | |
1607 sig_type = 'B'; | |
1608 value->i = 0; // clear it | |
1609 value->b = (jbyte)ival; | |
1610 break; | |
1611 case T_CHAR: | |
1612 sig_type = 'C'; | |
1613 value->i = 0; // clear it | |
1614 value->c = (jchar)ival; | |
1615 break; | |
1616 case T_SHORT: | |
1617 sig_type = 'S'; | |
1618 value->i = 0; // clear it | |
1619 value->s = (jshort)ival; | |
1620 break; | |
1621 case T_INT: | |
1622 // nothing to do | |
1623 break; | |
1624 default: | |
1625 // this is an integer instruction, should be one of above | |
1626 ShouldNotReachHere(); | |
1627 break; | |
1628 } | |
1629 } | |
1630 } | |
1631 | |
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1632 assert(sig_type != '[', "array should have sig_type == 'L'"); |
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1633 bool handle_created = false; |
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1634 |
0 | 1635 // convert oop to JNI handle. |
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1636 if (sig_type == 'L') { |
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1637 handle_created = true; |
0 | 1638 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); |
1639 } | |
1640 | |
1641 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
1642 | |
1643 // Destroy the JNI handle allocated above. | |
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1644 if (handle_created) { |
0 | 1645 JNIHandles::destroy_local(value->l); |
1646 } | |
1647 } | |
1648 | |
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1649 void JvmtiExport::post_field_modification(JavaThread *thread, Method* method, |
0 | 1650 address location, KlassHandle field_klass, Handle object, jfieldID field, |
1651 char sig_type, jvalue *value_ptr) { | |
1652 | |
1653 HandleMark hm(thread); | |
1654 methodHandle mh(thread, method); | |
1655 | |
1656 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1657 if (state == NULL) { | |
1658 return; | |
1659 } | |
1660 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1661 ("JVMTI [%s] Trg Field Modification event triggered", | |
1662 JvmtiTrace::safe_get_thread_name(thread))); | |
1663 | |
1664 JvmtiEnvThreadStateIterator it(state); | |
1665 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
1666 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
1667 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
1668 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
1669 JvmtiTrace::safe_get_thread_name(thread), | |
1670 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
1671 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
1672 location - mh()->code_base() )); | |
1673 | |
1674 JvmtiEnv *env = ets->get_env(); | |
1675 JvmtiLocationEventMark jem(thread, mh, location); | |
1676 jclass field_jclass = jem.to_jclass(field_klass()); | |
1677 jobject field_jobject = jem.to_jobject(object()); | |
1678 JvmtiJavaThreadEventTransition jet(thread); | |
1679 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
1680 if (callback != NULL) { | |
1681 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
1682 jem.jni_methodID(), jem.location(), | |
1683 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
1684 } | |
1685 } | |
1686 } | |
1687 } | |
1688 | |
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1689 void JvmtiExport::post_native_method_bind(Method* method, address* function_ptr) { |
0 | 1690 JavaThread* thread = JavaThread::current(); |
1691 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
1692 | |
1693 HandleMark hm(thread); | |
1694 methodHandle mh(thread, method); | |
1695 | |
1696 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
1697 JvmtiTrace::safe_get_thread_name(thread))); | |
1698 | |
1699 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1700 JvmtiEnvIterator it; | |
1701 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1702 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
1703 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
1704 JvmtiTrace::safe_get_thread_name(thread) )); | |
1705 | |
1706 JvmtiMethodEventMark jem(thread, mh); | |
1707 JvmtiJavaThreadEventTransition jet(thread); | |
1708 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
1709 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
1710 if (callback != NULL) { | |
1711 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
1712 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
1713 } | |
1714 } | |
1715 } | |
1716 } | |
1717 } | |
1718 | |
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1719 // Returns a record containing inlining information for the given nmethod |
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1720 jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
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1721 jint numstackframes = 0; |
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1722 jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
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1723 record->header.kind = JVMTI_CMLR_INLINE_INFO; |
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1724 record->header.next = NULL; |
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1725 record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
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1726 record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
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1727 record->numpcs = 0; |
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1728 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1729 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1730 record->numpcs++; |
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1731 } |
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1732 record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
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1733 int scope = 0; |
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1734 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1735 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1736 void* pc_address = (void*)p->real_pc(nm); |
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1737 assert(pc_address != NULL, "pc_address must be non-null"); |
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1738 record->pcinfo[scope].pc = pc_address; |
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1739 numstackframes=0; |
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1740 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1741 numstackframes++; |
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1742 } |
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1743 assert(numstackframes != 0, "numstackframes must be nonzero."); |
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1744 record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
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1745 record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
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1746 record->pcinfo[scope].numstackframes = numstackframes; |
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1747 int stackframe = 0; |
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1748 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1749 // 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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1750 assert(sd->method() != NULL, "sd->method() cannot be null."); |
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1751 record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
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1752 record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
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1753 stackframe++; |
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1754 } |
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1755 scope++; |
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1756 } |
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1757 return record; |
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1758 } |
0 | 1759 |
1760 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
1761 JavaThread* thread = JavaThread::current(); | |
1762 | |
1763 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1764 ("JVMTI [%s] method compile load event triggered", | |
1765 JvmtiTrace::safe_get_thread_name(thread))); | |
1766 | |
1767 JvmtiEnvIterator it; | |
1768 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1769 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1770 | |
1771 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1772 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
1773 JvmtiTrace::safe_get_thread_name(thread), | |
1774 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
1775 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
1776 ResourceMark rm(thread); | |
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1777 HandleMark hm(thread); |
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1778 |
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1779 // Add inlining information |
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1780 jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
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1781 // Pass inlining information through the void pointer |
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1782 JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
0 | 1783 JvmtiJavaThreadEventTransition jet(thread); |
1784 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1785 if (callback != NULL) { | |
1786 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
1787 jem.code_size(), jem.code_data(), jem.map_length(), | |
1788 jem.map(), jem.compile_info()); | |
1789 } | |
1790 } | |
1791 } | |
1792 } | |
1793 | |
1794 | |
1795 // post a COMPILED_METHOD_LOAD event for a given environment | |
1796 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
1797 const void *code_begin, const jint map_length, | |
1798 const jvmtiAddrLocationMap* map) | |
1799 { | |
1800 JavaThread* thread = JavaThread::current(); | |
1801 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1802 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
1803 JvmtiTrace::safe_get_thread_name(thread))); | |
1804 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
1805 | |
1806 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
1807 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
1808 JvmtiTrace::safe_get_thread_name(thread), method)); | |
1809 | |
1810 JvmtiEventMark jem(thread); | |
1811 JvmtiJavaThreadEventTransition jet(thread); | |
1812 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
1813 if (callback != NULL) { | |
1814 (*callback)(env->jvmti_external(), method, | |
1815 length, code_begin, map_length, | |
1816 map, NULL); | |
1817 } | |
1818 } | |
1819 } | |
1820 | |
1821 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
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1822 assert(name != NULL && name[0] != '\0', "sanity check"); |
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1823 |
0 | 1824 JavaThread* thread = JavaThread::current(); |
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1825 // In theory everyone coming thru here is in_vm but we need to be certain |
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1826 // because a callee will do a vm->native transition |
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1827 ThreadInVMfromUnknown __tiv; |
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1828 |
0 | 1829 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
1830 ("JVMTI [%s] method dynamic code generated event triggered", | |
1831 JvmtiTrace::safe_get_thread_name(thread))); | |
1832 JvmtiEnvIterator it; | |
1833 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1834 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1835 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1836 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1837 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1838 JvmtiEventMark jem(thread); | |
1839 JvmtiJavaThreadEventTransition jet(thread); | |
1840 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1841 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1842 if (callback != NULL) { | |
1843 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1844 } | |
1845 } | |
1846 } | |
1847 } | |
1848 | |
1849 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
1850 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
1851 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
1852 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
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1853 } else { |
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1854 // It may not be safe to post the event from this thread. Defer all |
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1855 // postings to the service thread so that it can perform them in a safe |
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1856 // context and in-order. |
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1857 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1858 JvmtiDeferredEvent event = JvmtiDeferredEvent::dynamic_code_generated_event( |
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1859 name, code_begin, code_end); |
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1860 JvmtiDeferredEventQueue::enqueue(event); |
0 | 1861 } |
1862 } | |
1863 | |
1864 | |
1865 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
1866 // used by GenerateEvents | |
1867 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
1868 const void *code_begin, const void *code_end) | |
1869 { | |
1870 JavaThread* thread = JavaThread::current(); | |
1871 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1872 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
1873 JvmtiTrace::safe_get_thread_name(thread))); | |
1874 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
1875 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
1876 ("JVMTI [%s] dynamic code generated event sent for %s", | |
1877 JvmtiTrace::safe_get_thread_name(thread), name)); | |
1878 JvmtiEventMark jem(thread); | |
1879 JvmtiJavaThreadEventTransition jet(thread); | |
1880 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
1881 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
1882 if (callback != NULL) { | |
1883 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
1884 } | |
1885 } | |
1886 } | |
1887 | |
1888 // post a DynamicCodeGenerated event while holding locks in the VM. | |
1889 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
1890 address code_begin, address code_end) | |
1891 { | |
1892 // register the stub with the current dynamic code event collector | |
1893 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
609
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1894 // state can only be NULL if the current thread is exiting which |
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1895 // should not happen since we're trying to post an event |
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1896 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
0 | 1897 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
1898 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
1899 collector->register_stub(name, code_begin, code_end); | |
1900 } | |
1901 | |
1902 // Collect all the vm internally allocated objects which are visible to java world | |
1903 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
1904 Thread* thread = ThreadLocalStorage::thread(); | |
1905 if (thread != NULL && thread->is_Java_thread()) { | |
1906 // Can not take safepoint here. | |
1907 No_Safepoint_Verifier no_sfpt; | |
1908 // Can not take safepoint here so can not use state_for to get | |
1909 // jvmti thread state. | |
1910 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
1911 if (state != NULL ) { | |
1912 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
1913 JvmtiVMObjectAllocEventCollector *collector; | |
1914 collector = state->get_vm_object_alloc_event_collector(); | |
1915 if (collector != NULL && collector->is_enabled()) { | |
1916 // Don't record classes as these will be notified via the ClassLoad | |
1917 // event. | |
1142 | 1918 if (obj->klass() != SystemDictionary::Class_klass()) { |
0 | 1919 collector->record_allocation(obj); |
1920 } | |
1921 } | |
1922 } | |
1923 } | |
1924 } | |
1925 | |
1926 void JvmtiExport::post_garbage_collection_finish() { | |
1927 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
1928 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1929 ("JVMTI [%s] garbage collection finish event triggered", | |
1930 JvmtiTrace::safe_get_thread_name(thread))); | |
1931 JvmtiEnvIterator it; | |
1932 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1933 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { | |
1934 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
1935 ("JVMTI [%s] garbage collection finish event sent ", | |
1936 JvmtiTrace::safe_get_thread_name(thread))); | |
1937 JvmtiThreadEventTransition jet(thread); | |
1938 // JNIEnv is NULL here because this event is posted from VM Thread | |
1939 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
1940 if (callback != NULL) { | |
1941 (*callback)(env->jvmti_external()); | |
1942 } | |
1943 } | |
1944 } | |
1945 } | |
1946 | |
1947 void JvmtiExport::post_garbage_collection_start() { | |
1948 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
1949 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1950 ("JVMTI [%s] garbage collection start event triggered", | |
1951 JvmtiTrace::safe_get_thread_name(thread))); | |
1952 JvmtiEnvIterator it; | |
1953 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1954 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
1955 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
1956 ("JVMTI [%s] garbage collection start event sent ", | |
1957 JvmtiTrace::safe_get_thread_name(thread))); | |
1958 JvmtiThreadEventTransition jet(thread); | |
1959 // JNIEnv is NULL here because this event is posted from VM Thread | |
1960 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
1961 if (callback != NULL) { | |
1962 (*callback)(env->jvmti_external()); | |
1963 } | |
1964 } | |
1965 } | |
1966 } | |
1967 | |
1968 void JvmtiExport::post_data_dump() { | |
1969 Thread *thread = Thread::current(); | |
1970 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1971 ("JVMTI [%s] data dump request event triggered", | |
1972 JvmtiTrace::safe_get_thread_name(thread))); | |
1973 JvmtiEnvIterator it; | |
1974 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
1975 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
1976 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
1977 ("JVMTI [%s] data dump request event sent ", | |
1978 JvmtiTrace::safe_get_thread_name(thread))); | |
1979 JvmtiThreadEventTransition jet(thread); | |
1980 // JNIEnv is NULL here because this event is posted from VM Thread | |
1981 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
1982 if (callback != NULL) { | |
1983 (*callback)(env->jvmti_external()); | |
1984 } | |
1985 } | |
1986 } | |
1987 } | |
1988 | |
1989 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
1990 oop object = (oop)obj_mntr->object(); | |
1991 if (!ServiceUtil::visible_oop(object)) { | |
1992 // Ignore monitor contended enter for vm internal object. | |
1993 return; | |
1994 } | |
1995 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
1996 if (state == NULL) { | |
1997 return; | |
1998 } | |
1999 | |
2000 HandleMark hm(thread); | |
2001 Handle h(thread, object); | |
2002 | |
2003 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2004 ("JVMTI [%s] montior contended enter event triggered", | |
2005 JvmtiTrace::safe_get_thread_name(thread))); | |
2006 | |
2007 JvmtiEnvThreadStateIterator it(state); | |
2008 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2009 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
2010 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
2011 ("JVMTI [%s] monitor contended enter event sent", | |
2012 JvmtiTrace::safe_get_thread_name(thread))); | |
2013 JvmtiMonitorEventMark jem(thread, h()); | |
2014 JvmtiEnv *env = ets->get_env(); | |
2015 JvmtiThreadEventTransition jet(thread); | |
2016 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
2017 if (callback != NULL) { | |
2018 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2019 } | |
2020 } | |
2021 } | |
2022 } | |
2023 | |
2024 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
2025 oop object = (oop)obj_mntr->object(); | |
2026 if (!ServiceUtil::visible_oop(object)) { | |
2027 // Ignore monitor contended entered for vm internal object. | |
2028 return; | |
2029 } | |
2030 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2031 if (state == NULL) { | |
2032 return; | |
2033 } | |
2034 | |
2035 HandleMark hm(thread); | |
2036 Handle h(thread, object); | |
2037 | |
2038 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2039 ("JVMTI [%s] montior contended entered event triggered", | |
2040 JvmtiTrace::safe_get_thread_name(thread))); | |
2041 | |
2042 JvmtiEnvThreadStateIterator it(state); | |
2043 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2044 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
2045 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
2046 ("JVMTI [%s] monitor contended enter event sent", | |
2047 JvmtiTrace::safe_get_thread_name(thread))); | |
2048 JvmtiMonitorEventMark jem(thread, h()); | |
2049 JvmtiEnv *env = ets->get_env(); | |
2050 JvmtiThreadEventTransition jet(thread); | |
2051 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
2052 if (callback != NULL) { | |
2053 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
2054 } | |
2055 } | |
2056 } | |
2057 } | |
2058 | |
2059 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
2060 jlong timeout) { | |
2061 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2062 if (state == NULL) { | |
2063 return; | |
2064 } | |
2065 | |
2066 HandleMark hm(thread); | |
2067 Handle h(thread, object); | |
2068 | |
2069 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2070 ("JVMTI [%s] montior wait event triggered", | |
2071 JvmtiTrace::safe_get_thread_name(thread))); | |
2072 | |
2073 JvmtiEnvThreadStateIterator it(state); | |
2074 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2075 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
2076 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
2077 ("JVMTI [%s] monitor wait event sent ", | |
2078 JvmtiTrace::safe_get_thread_name(thread))); | |
2079 JvmtiMonitorEventMark jem(thread, h()); | |
2080 JvmtiEnv *env = ets->get_env(); | |
2081 JvmtiThreadEventTransition jet(thread); | |
2082 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
2083 if (callback != NULL) { | |
2084 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2085 jem.jni_object(), timeout); | |
2086 } | |
2087 } | |
2088 } | |
2089 } | |
2090 | |
2091 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
2092 oop object = (oop)obj_mntr->object(); | |
2093 if (!ServiceUtil::visible_oop(object)) { | |
2094 // Ignore monitor waited for vm internal object. | |
2095 return; | |
2096 } | |
2097 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2098 if (state == NULL) { | |
2099 return; | |
2100 } | |
2101 | |
2102 HandleMark hm(thread); | |
2103 Handle h(thread, object); | |
2104 | |
2105 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2106 ("JVMTI [%s] montior waited event triggered", | |
2107 JvmtiTrace::safe_get_thread_name(thread))); | |
2108 | |
2109 JvmtiEnvThreadStateIterator it(state); | |
2110 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
2111 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
2112 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
2113 ("JVMTI [%s] monitor waited event sent ", | |
2114 JvmtiTrace::safe_get_thread_name(thread))); | |
2115 JvmtiMonitorEventMark jem(thread, h()); | |
2116 JvmtiEnv *env = ets->get_env(); | |
2117 JvmtiThreadEventTransition jet(thread); | |
2118 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
2119 if (callback != NULL) { | |
2120 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2121 jem.jni_object(), timed_out); | |
2122 } | |
2123 } | |
2124 } | |
2125 } | |
2126 | |
2127 | |
2128 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
2129 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
2130 JvmtiTrace::safe_get_thread_name(thread))); | |
2131 if (object == NULL) { | |
2132 return; | |
2133 } | |
2134 HandleMark hm(thread); | |
2135 Handle h(thread, object); | |
2136 JvmtiEnvIterator it; | |
2137 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
2138 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
2139 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
2140 JvmtiTrace::safe_get_thread_name(thread), | |
6983 | 2141 object==NULL? "NULL" : java_lang_Class::as_Klass(object)->external_name())); |
0 | 2142 |
2143 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
2144 JvmtiJavaThreadEventTransition jet(thread); | |
2145 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
2146 if (callback != NULL) { | |
2147 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
2148 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
2149 } | |
2150 } | |
2151 } | |
2152 } | |
2153 | |
2154 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2155 | |
2156 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
2157 assert(JavaThread::current() == thread, "thread is not current"); | |
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2158 MutexLocker mu(JvmtiThreadState_lock); |
0 | 2159 |
2126
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2160 if (thread->jvmti_thread_state() != NULL) { |
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2161 // This has to happen after the thread state is removed, which is |
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2162 // why it is not in post_thread_end_event like its complement |
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2163 // Maybe both these functions should be rolled into the posts? |
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2164 JvmtiEventController::thread_ended(thread); |
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2165 } |
0 | 2166 } |
2167 | |
23007
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2168 void JvmtiExport::clear_detected_exception(JavaThread* thread) { |
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2169 assert(JavaThread::current() == thread, "thread is not current"); |
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2170 |
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2171 JvmtiThreadState* state = thread->jvmti_thread_state(); |
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2172 if (state != NULL) { |
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2173 state->clear_exception_detected(); |
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2174 } |
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2175 } |
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2176 |
0 | 2177 void JvmtiExport::oops_do(OopClosure* f) { |
2178 JvmtiCurrentBreakpoints::oops_do(f); | |
2179 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
2180 } | |
2181 | |
2147
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2182 void JvmtiExport::weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f) { |
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2183 JvmtiTagMap::weak_oops_do(is_alive, f); |
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2184 } |
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2185 |
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2186 void JvmtiExport::gc_epilogue() { |
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2187 JvmtiCurrentBreakpoints::gc_epilogue(); |
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2188 } |
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2189 |
0 | 2190 // Onload raw monitor transition. |
2191 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
2192 JvmtiPendingMonitors::transition_raw_monitors(); | |
2193 } | |
2194 | |
2195 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2196 | |
2197 // type for the Agent_OnAttach entry point | |
2198 extern "C" { | |
2199 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
2200 } | |
2201 | |
2202 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
2203 char ebuf[1024]; | |
2204 char buffer[JVM_MAXPATHLEN]; | |
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2205 void* library = NULL; |
0 | 2206 jint result = JNI_ERR; |
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2207 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; |
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2208 size_t num_symbol_entries = ARRAY_SIZE(on_attach_symbols); |
0 | 2209 |
2210 // get agent name and options | |
2211 const char* agent = op->arg(0); | |
2212 const char* absParam = op->arg(1); | |
2213 const char* options = op->arg(2); | |
2214 | |
2215 // The abs paramter should be "true" or "false" | |
2216 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
2217 | |
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2218 // Initially marked as invalid. It will be set to valid if we can find the agent |
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2219 AgentLibrary *agent_lib = new AgentLibrary(agent, options, is_absolute_path, NULL); |
0 | 2220 |
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2221 // Check for statically linked in agent. If not found then if the path is |
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2222 // absolute we attempt to load the library. Otherwise we try to load it |
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2223 // from the standard dll directory. |
0 | 2224 |
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2225 if (!os::find_builtin_agent(agent_lib, on_attach_symbols, num_symbol_entries)) { |
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2226 if (is_absolute_path) { |
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2227 library = os::dll_load(agent, ebuf, sizeof ebuf); |
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2228 } else { |
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2229 // Try to load the agent from the standard dll directory |
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2230 if (os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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2231 agent)) { |
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2232 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2233 } |
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2234 if (library == NULL) { |
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2235 // not found - try local path |
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2236 char ns[1] = {0}; |
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2237 if (os::dll_build_name(buffer, sizeof(buffer), ns, agent)) { |
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2238 library = os::dll_load(buffer, ebuf, sizeof ebuf); |
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2239 } |
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2240 } |
0 | 2241 } |
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2242 if (library != NULL) { |
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2243 agent_lib->set_os_lib(library); |
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2244 agent_lib->set_valid(); |
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2245 } |
0 | 2246 } |
2247 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
2248 // function | |
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2249 if (agent_lib->valid()) { |
0 | 2250 // Lookup the Agent_OnAttach function |
2251 OnAttachEntry_t on_attach_entry = NULL; | |
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2252 on_attach_entry = CAST_TO_FN_PTR(OnAttachEntry_t, |
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2253 os::find_agent_function(agent_lib, false, on_attach_symbols, num_symbol_entries)); |
0 | 2254 if (on_attach_entry == NULL) { |
2255 // Agent_OnAttach missing - unload library | |
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2256 if (!agent_lib->is_static_lib()) { |
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2257 os::dll_unload(library); |
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2258 } |
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2259 delete agent_lib; |
0 | 2260 } else { |
2261 // Invoke the Agent_OnAttach function | |
2262 JavaThread* THREAD = JavaThread::current(); | |
2263 { | |
2264 extern struct JavaVM_ main_vm; | |
2265 JvmtiThreadEventMark jem(THREAD); | |
2266 JvmtiJavaThreadEventTransition jet(THREAD); | |
2267 | |
2268 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
2269 } | |
2270 | |
2271 // Agent_OnAttach may have used JNI | |
2272 if (HAS_PENDING_EXCEPTION) { | |
2273 CLEAR_PENDING_EXCEPTION; | |
2274 } | |
2275 | |
2276 // If OnAttach returns JNI_OK then we add it to the list of | |
2277 // agent libraries so that we can call Agent_OnUnload later. | |
2278 if (result == JNI_OK) { | |
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2279 Arguments::add_loaded_agent(agent_lib); |
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2280 } else { |
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2281 delete agent_lib; |
0 | 2282 } |
2283 | |
2284 // Agent_OnAttach executed so completion status is JNI_OK | |
2285 st->print_cr("%d", result); | |
2286 result = JNI_OK; | |
2287 } | |
2288 } | |
2289 return result; | |
2290 } | |
2291 | |
2292 //////////////////////////////////////////////////////////////////////////////////////////////// | |
2293 | |
2294 // Setup current current thread for event collection. | |
2295 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
2296 // set this event collector to be the current one. | |
2297 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
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2298 // state can only be NULL if the current thread is exiting which |
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2299 // should not happen since we're trying to configure for event collection |
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2300 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
0 | 2301 if (is_vm_object_alloc_event()) { |
2302 _prev = state->get_vm_object_alloc_event_collector(); | |
2303 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
2304 } else if (is_dynamic_code_event()) { | |
2305 _prev = state->get_dynamic_code_event_collector(); | |
2306 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
2307 } | |
2308 } | |
2309 | |
2310 // Unset current event collection in this thread and reset it with previous | |
2311 // collector. | |
2312 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
2313 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
2314 if (state != NULL) { | |
2315 // restore the previous event collector (if any) | |
2316 if (is_vm_object_alloc_event()) { | |
2317 if (state->get_vm_object_alloc_event_collector() == this) { | |
2318 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
2319 } else { | |
2320 // this thread's jvmti state was created during the scope of | |
2321 // the event collector. | |
2322 } | |
2323 } else { | |
2324 if (is_dynamic_code_event()) { | |
2325 if (state->get_dynamic_code_event_collector() == this) { | |
2326 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
2327 } else { | |
2328 // this thread's jvmti state was created during the scope of | |
2329 // the event collector. | |
2330 } | |
2331 } | |
2332 } | |
2333 } | |
2334 } | |
2335 | |
2336 // create the dynamic code event collector | |
2337 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
2338 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
2339 setup_jvmti_thread_state(); | |
2340 } | |
2341 } | |
2342 | |
2343 // iterate over any code blob descriptors collected and post a | |
2344 // DYNAMIC_CODE_GENERATED event to the profiler. | |
2345 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
2346 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
2347 // iterate over any code blob descriptors that we collected | |
2348 if (_code_blobs != NULL) { | |
2349 for (int i=0; i<_code_blobs->length(); i++) { | |
2350 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
2351 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
2352 FreeHeap(blob); | |
2353 } | |
2354 delete _code_blobs; | |
2355 } | |
2356 unset_jvmti_thread_state(); | |
2357 } | |
2358 | |
2359 // register a stub | |
2360 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
2361 if (_code_blobs == NULL) { | |
6197 | 2362 _code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(1,true); |
0 | 2363 } |
2364 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
2365 } | |
2366 | |
2367 // Setup current thread to record vm allocated objects. | |
2368 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
2369 if (JvmtiExport::should_post_vm_object_alloc()) { | |
2370 _enable = true; | |
2371 setup_jvmti_thread_state(); | |
2372 } else { | |
2373 _enable = false; | |
2374 } | |
2375 } | |
2376 | |
2377 // Post vm_object_alloc event for vm allocated objects visible to java | |
2378 // world. | |
2379 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
2380 if (_allocated != NULL) { | |
2381 set_enabled(false); | |
2382 for (int i = 0; i < _allocated->length(); i++) { | |
2383 oop obj = _allocated->at(i); | |
2384 if (ServiceUtil::visible_oop(obj)) { | |
2385 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
2386 } | |
2387 } | |
2388 delete _allocated; | |
2389 } | |
2390 unset_jvmti_thread_state(); | |
2391 } | |
2392 | |
2393 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
2394 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
2395 if (_allocated == NULL) { | |
6197 | 2396 _allocated = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<oop>(1, true); |
0 | 2397 } |
2398 _allocated->push(obj); | |
2399 } | |
2400 | |
2401 // GC support. | |
2402 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
2403 if (_allocated != NULL) { | |
2404 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
2405 if (_allocated->at(i) != NULL) { | |
2406 f->do_oop(_allocated->adr_at(i)); | |
2407 } | |
2408 } | |
2409 } | |
2410 } | |
2411 | |
2412 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
2413 // no-op if jvmti not enabled | |
2414 if (!JvmtiEnv::environments_might_exist()) { | |
2415 return; | |
2416 } | |
2417 | |
2418 // Runs at safepoint. So no need to acquire Threads_lock. | |
2419 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
2420 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
2421 if (state != NULL) { | |
2422 JvmtiVMObjectAllocEventCollector *collector; | |
2423 collector = state->get_vm_object_alloc_event_collector(); | |
2424 while (collector != NULL) { | |
2425 collector->oops_do(f); | |
2426 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
2427 } | |
2428 } | |
2429 } | |
2430 } | |
2431 | |
2432 | |
2433 // Disable collection of VMObjectAlloc events | |
2434 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
2435 // a no-op if VMObjectAlloc event is not enabled | |
2436 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
2437 return; | |
2438 } | |
2439 Thread* thread = ThreadLocalStorage::thread(); | |
2440 if (thread != NULL && thread->is_Java_thread()) { | |
2441 JavaThread* current_thread = (JavaThread*)thread; | |
2442 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
2443 if (state != NULL) { | |
2444 JvmtiVMObjectAllocEventCollector *collector; | |
2445 collector = state->get_vm_object_alloc_event_collector(); | |
2446 if (collector != NULL && collector->is_enabled()) { | |
2447 _collector = collector; | |
2448 _collector->set_enabled(false); | |
2449 } | |
2450 } | |
2451 } | |
2452 } | |
2453 | |
2454 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
2455 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
2456 if (was_enabled()) { | |
2457 _collector->set_enabled(true); | |
2458 } | |
2459 }; | |
2460 | |
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|
2461 JvmtiGCMarker::JvmtiGCMarker() { |
0 | 2462 // if there aren't any JVMTI environments then nothing to do |
2463 if (!JvmtiEnv::environments_might_exist()) { | |
2464 return; | |
2465 } | |
2466 | |
2467 if (JvmtiExport::should_post_garbage_collection_start()) { | |
2468 JvmtiExport::post_garbage_collection_start(); | |
2469 } | |
2470 | |
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2471 if (SafepointSynchronize::is_at_safepoint()) { |
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|
2472 // Do clean up tasks that need to be done at a safepoint |
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2473 JvmtiEnvBase::check_for_periodic_clean_up(); |
0 | 2474 } |
2475 } | |
2476 | |
2477 JvmtiGCMarker::~JvmtiGCMarker() { | |
2478 // if there aren't any JVMTI environments then nothing to do | |
2479 if (!JvmtiEnv::environments_might_exist()) { | |
2480 return; | |
2481 } | |
2482 | |
2483 // JVMTI notify gc finish | |
2484 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
2485 JvmtiExport::post_garbage_collection_finish(); | |
2486 } | |
2487 } |