Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiExport.cpp @ 1577:852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
Reviewed-by: kvn, dcubed
| author | never |
|---|---|
| date | Wed, 02 Jun 2010 14:23:23 -0700 |
| parents | b4776199210f |
| children | e9ff18c4ace7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1184
7fbf850d87b7
6580131: 3/4 CompiledMethodLoad events don't produce the expected extra notifications to describe inlining
dcubed
parents:
1121
diff
changeset
|
2 * Copyright 2003-2010 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_jvmtiExport.cpp.incl" | |
| 27 | |
| 28 #ifdef JVMTI_TRACE | |
| 29 #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
| 30 #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } | |
| 31 #else | |
| 32 #define EVT_TRIG_TRACE(evt,out) | |
| 33 #define EVT_TRACE(evt,out) | |
| 34 #endif | |
| 35 | |
| 36 /////////////////////////////////////////////////////////////// | |
| 37 // | |
| 38 // JvmtiEventTransition | |
| 39 // | |
| 40 // TO DO -- | |
| 41 // more handle purging | |
| 42 | |
| 43 // Use this for JavaThreads and state is _thread_in_vm. | |
| 44 class JvmtiJavaThreadEventTransition : StackObj { | |
| 45 private: | |
| 46 ResourceMark _rm; | |
| 47 ThreadToNativeFromVM _transition; | |
| 48 HandleMark _hm; | |
| 49 | |
| 50 public: | |
| 51 JvmtiJavaThreadEventTransition(JavaThread *thread) : | |
| 52 _rm(), | |
| 53 _transition(thread), | |
| 54 _hm(thread) {}; | |
| 55 }; | |
| 56 | |
| 57 // For JavaThreads which are not in _thread_in_vm state | |
| 58 // and other system threads use this. | |
| 59 class JvmtiThreadEventTransition : StackObj { | |
| 60 private: | |
| 61 ResourceMark _rm; | |
| 62 HandleMark _hm; | |
| 63 JavaThreadState _saved_state; | |
| 64 JavaThread *_jthread; | |
| 65 | |
| 66 public: | |
| 67 JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { | |
| 68 if (thread->is_Java_thread()) { | |
| 69 _jthread = (JavaThread *)thread; | |
| 70 _saved_state = _jthread->thread_state(); | |
| 71 if (_saved_state == _thread_in_Java) { | |
| 72 ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); | |
| 73 } else { | |
| 74 ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); | |
| 75 } | |
| 76 } else { | |
| 77 _jthread = NULL; | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 ~JvmtiThreadEventTransition() { | |
| 82 if (_jthread != NULL) | |
| 83 ThreadStateTransition::transition_from_native(_jthread, _saved_state); | |
| 84 } | |
| 85 }; | |
| 86 | |
| 87 | |
| 88 /////////////////////////////////////////////////////////////// | |
| 89 // | |
| 90 // JvmtiEventMark | |
| 91 // | |
| 92 | |
| 93 class JvmtiEventMark : public StackObj { | |
| 94 private: | |
| 95 JavaThread *_thread; | |
| 96 JNIEnv* _jni_env; | |
| 97 bool _exception_detected; | |
| 98 bool _exception_caught; | |
| 99 #if 0 | |
| 100 JNIHandleBlock* _hblock; | |
| 101 #endif | |
| 102 | |
| 103 public: | |
| 104 JvmtiEventMark(JavaThread *thread) : _thread(thread), | |
| 105 _jni_env(thread->jni_environment()) { | |
| 106 #if 0 | |
| 107 _hblock = thread->active_handles(); | |
| 108 _hblock->clear_thoroughly(); // so we can be safe | |
| 109 #else | |
| 110 // we want to use the code above - but that needs the JNIHandle changes - later... | |
| 111 // for now, steal JNI push local frame code | |
| 112 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 113 // we are before an event. | |
| 114 // Save current jvmti thread exception state. | |
| 115 if (state != NULL) { | |
| 116 _exception_detected = state->is_exception_detected(); | |
| 117 _exception_caught = state->is_exception_caught(); | |
| 118 } else { | |
| 119 _exception_detected = false; | |
| 120 _exception_caught = false; | |
| 121 } | |
| 122 | |
| 123 JNIHandleBlock* old_handles = thread->active_handles(); | |
| 124 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
| 125 assert(new_handles != NULL, "should not be NULL"); | |
| 126 new_handles->set_pop_frame_link(old_handles); | |
| 127 thread->set_active_handles(new_handles); | |
| 128 #endif | |
| 129 assert(thread == JavaThread::current(), "thread must be current!"); | |
| 130 thread->frame_anchor()->make_walkable(thread); | |
| 131 }; | |
| 132 | |
| 133 ~JvmtiEventMark() { | |
| 134 #if 0 | |
| 135 _hblock->clear(); // for consistency with future correct behavior | |
| 136 #else | |
| 137 // we want to use the code above - but that needs the JNIHandle changes - later... | |
| 138 // for now, steal JNI pop local frame code | |
| 139 JNIHandleBlock* old_handles = _thread->active_handles(); | |
| 140 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); | |
| 141 assert(new_handles != NULL, "should not be NULL"); | |
| 142 _thread->set_active_handles(new_handles); | |
| 143 // Note that we set the pop_frame_link to NULL explicitly, otherwise | |
| 144 // the release_block call will release the blocks. | |
| 145 old_handles->set_pop_frame_link(NULL); | |
| 146 JNIHandleBlock::release_block(old_handles, _thread); // may block | |
| 147 #endif | |
| 148 | |
| 149 JvmtiThreadState* state = _thread->jvmti_thread_state(); | |
| 150 // we are continuing after an event. | |
| 151 if (state != NULL) { | |
| 152 // Restore the jvmti thread exception state. | |
| 153 if (_exception_detected) { | |
| 154 state->set_exception_detected(); | |
| 155 } | |
| 156 if (_exception_caught) { | |
| 157 state->set_exception_caught(); | |
| 158 } | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 #if 0 | |
| 163 jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } | |
| 164 #else | |
| 165 // we want to use the code above - but that needs the JNIHandle changes - later... | |
| 166 // for now, use regular make_local | |
| 167 jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } | |
| 168 #endif | |
| 169 | |
| 170 jclass to_jclass(klassOop klass) { return (klass == NULL ? NULL : (jclass)to_jobject(Klass::cast(klass)->java_mirror())); } | |
| 171 | |
| 172 jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } | |
| 173 | |
| 174 JNIEnv* jni_env() { return _jni_env; } | |
| 175 }; | |
| 176 | |
| 177 class JvmtiThreadEventMark : public JvmtiEventMark { | |
| 178 private: | |
| 179 jthread _jt; | |
| 180 | |
| 181 public: | |
| 182 JvmtiThreadEventMark(JavaThread *thread) : | |
| 183 JvmtiEventMark(thread) { | |
| 184 _jt = (jthread)(to_jobject(thread->threadObj())); | |
| 185 }; | |
| 186 jthread jni_thread() { return _jt; } | |
| 187 }; | |
| 188 | |
| 189 class JvmtiClassEventMark : public JvmtiThreadEventMark { | |
| 190 private: | |
| 191 jclass _jc; | |
| 192 | |
| 193 public: | |
| 194 JvmtiClassEventMark(JavaThread *thread, klassOop klass) : | |
| 195 JvmtiThreadEventMark(thread) { | |
| 196 _jc = to_jclass(klass); | |
| 197 }; | |
| 198 jclass jni_class() { return _jc; } | |
| 199 }; | |
| 200 | |
| 201 class JvmtiMethodEventMark : public JvmtiThreadEventMark { | |
| 202 private: | |
| 203 jmethodID _mid; | |
| 204 | |
| 205 public: | |
| 206 JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : | |
| 207 JvmtiThreadEventMark(thread), | |
| 208 _mid(to_jmethodID(method)) {}; | |
| 209 jmethodID jni_methodID() { return _mid; } | |
| 210 }; | |
| 211 | |
| 212 class JvmtiLocationEventMark : public JvmtiMethodEventMark { | |
| 213 private: | |
| 214 jlocation _loc; | |
| 215 | |
| 216 public: | |
| 217 JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : | |
| 218 JvmtiMethodEventMark(thread, method), | |
| 219 _loc(location - method->code_base()) {}; | |
| 220 jlocation location() { return _loc; } | |
| 221 }; | |
| 222 | |
| 223 class JvmtiExceptionEventMark : public JvmtiLocationEventMark { | |
| 224 private: | |
| 225 jobject _exc; | |
| 226 | |
| 227 public: | |
| 228 JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : | |
| 229 JvmtiLocationEventMark(thread, method, location), | |
| 230 _exc(to_jobject(exception())) {}; | |
| 231 jobject exception() { return _exc; } | |
| 232 }; | |
| 233 | |
| 234 class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { | |
| 235 private: | |
| 236 const char *_class_name; | |
| 237 jobject _jloader; | |
| 238 jobject _protection_domain; | |
| 239 jclass _class_being_redefined; | |
| 240 | |
| 241 public: | |
| 242 JvmtiClassFileLoadEventMark(JavaThread *thread, symbolHandle name, | |
| 243 Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { | |
| 244 _class_name = name() != NULL? name->as_utf8() : NULL; | |
| 245 _jloader = (jobject)to_jobject(class_loader()); | |
| 246 _protection_domain = (jobject)to_jobject(prot_domain()); | |
| 247 if (class_being_redefined == NULL) { | |
| 248 _class_being_redefined = NULL; | |
| 249 } else { | |
| 250 _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); | |
| 251 } | |
| 252 }; | |
| 253 const char *class_name() { | |
| 254 return _class_name; | |
| 255 } | |
| 256 jobject jloader() { | |
| 257 return _jloader; | |
| 258 } | |
| 259 jobject protection_domain() { | |
| 260 return _protection_domain; | |
| 261 } | |
| 262 jclass class_being_redefined() { | |
| 263 return _class_being_redefined; | |
| 264 } | |
| 265 }; | |
| 266 | |
| 267 ////////////////////////////////////////////////////////////////////////////// | |
| 268 | |
| 269 int JvmtiExport::_field_access_count = 0; | |
| 270 int JvmtiExport::_field_modification_count = 0; | |
| 271 | |
| 272 bool JvmtiExport::_can_access_local_variables = false; | |
| 273 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
| 274 bool JvmtiExport::_can_modify_any_class = false; | |
| 275 bool JvmtiExport::_can_walk_any_space = false; | |
| 276 | |
| 277 bool JvmtiExport::_has_redefined_a_class = false; | |
| 278 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
| 279 | |
| 280 // | |
| 281 // field access management | |
| 282 // | |
| 283 | |
| 284 // interpreter generator needs the address of the counter | |
| 285 address JvmtiExport::get_field_access_count_addr() { | |
| 286 // We don't grab a lock because we don't want to | |
| 287 // serialize field access between all threads. This means that a | |
| 288 // thread on another processor can see the wrong count value and | |
| 289 // may either miss making a needed call into post_field_access() | |
| 290 // or will make an unneeded call into post_field_access(). We pay | |
| 291 // this price to avoid slowing down the VM when we aren't watching | |
| 292 // field accesses. | |
| 293 // Other access/mutation safe by virtue of being in VM state. | |
| 294 return (address)(&_field_access_count); | |
| 295 } | |
| 296 | |
| 297 // | |
| 298 // field modification management | |
| 299 // | |
| 300 | |
| 301 // interpreter generator needs the address of the counter | |
| 302 address JvmtiExport::get_field_modification_count_addr() { | |
| 303 // We don't grab a lock because we don't | |
| 304 // want to serialize field modification between all threads. This | |
| 305 // means that a thread on another processor can see the wrong | |
| 306 // count value and may either miss making a needed call into | |
| 307 // post_field_modification() or will make an unneeded call into | |
| 308 // post_field_modification(). We pay this price to avoid slowing | |
| 309 // down the VM when we aren't watching field modifications. | |
| 310 // Other access/mutation safe by virtue of being in VM state. | |
| 311 return (address)(&_field_modification_count); | |
| 312 } | |
| 313 | |
| 314 | |
| 315 /////////////////////////////////////////////////////////////// | |
| 316 // Functions needed by java.lang.instrument for starting up javaagent. | |
| 317 /////////////////////////////////////////////////////////////// | |
| 318 | |
| 319 jint | |
| 320 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
| 1121 | 321 // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
| 322 // has already been validated in JNI GetEnv(). | |
| 323 int major, minor, micro; | |
| 324 | |
| 325 // micro version doesn't matter here (yet?) | |
| 326 decode_version_values(version, &major, &minor, µ); | |
| 327 switch (major) { | |
| 328 case 1: | |
| 329 switch (minor) { | |
| 330 case 0: // version 1.0.<micro> is recognized | |
| 331 case 1: // version 1.1.<micro> is recognized | |
| 332 break; | |
| 333 | |
| 334 default: | |
| 335 return JNI_EVERSION; // unsupported minor version number | |
| 336 } | |
| 337 break; | |
| 338 | |
| 339 default: | |
| 340 return JNI_EVERSION; // unsupported major version number | |
| 341 } | |
| 0 | 342 |
| 343 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
| 344 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
| 345 // transition code: native to VM | |
| 346 ThreadInVMfromNative __tiv(current_thread); | |
| 347 __ENTRY(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) | |
| 348 debug_only(VMNativeEntryWrapper __vew;) | |
| 349 | |
| 1121 | 350 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
| 0 | 351 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
| 352 return JNI_OK; | |
| 353 | |
| 354 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
| 355 // not live, no thread to transition | |
| 1121 | 356 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
| 0 | 357 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
| 358 return JNI_OK; | |
| 359 | |
| 360 } else { | |
| 361 // Called at the wrong time | |
| 362 *penv = NULL; | |
| 363 return JNI_EDETACHED; | |
| 364 } | |
| 365 } | |
| 366 | |
| 1121 | 367 |
| 368 void | |
| 369 JvmtiExport::decode_version_values(jint version, int * major, int * minor, | |
| 370 int * micro) { | |
| 371 *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; | |
| 372 *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; | |
| 373 *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; | |
| 374 } | |
| 375 | |
| 0 | 376 void JvmtiExport::enter_primordial_phase() { |
| 377 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
| 378 } | |
| 379 | |
| 380 void JvmtiExport::enter_start_phase() { | |
| 381 JvmtiManageCapabilities::recompute_always_capabilities(); | |
| 382 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
| 383 } | |
| 384 | |
| 385 void JvmtiExport::enter_onload_phase() { | |
| 386 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
| 387 } | |
| 388 | |
| 389 void JvmtiExport::enter_live_phase() { | |
| 390 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
| 391 } | |
| 392 | |
| 393 // | |
| 394 // JVMTI events that the VM posts to the debugger and also startup agent | |
| 395 // and call the agent's premain() for java.lang.instrument. | |
| 396 // | |
| 397 | |
| 398 void JvmtiExport::post_vm_start() { | |
| 399 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
| 400 | |
| 401 // can now enable some events | |
| 402 JvmtiEventController::vm_start(); | |
| 403 | |
| 404 JvmtiEnvIterator it; | |
| 405 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 406 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
| 407 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
| 408 | |
| 409 JavaThread *thread = JavaThread::current(); | |
| 410 JvmtiThreadEventMark jem(thread); | |
| 411 JvmtiJavaThreadEventTransition jet(thread); | |
| 412 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
| 413 if (callback != NULL) { | |
| 414 (*callback)(env->jvmti_external(), jem.jni_env()); | |
| 415 } | |
| 416 } | |
| 417 } | |
| 418 } | |
| 419 | |
| 420 | |
| 421 void JvmtiExport::post_vm_initialized() { | |
| 422 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
| 423 | |
| 424 // can now enable events | |
| 425 JvmtiEventController::vm_init(); | |
| 426 | |
| 427 JvmtiEnvIterator it; | |
| 428 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 429 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
| 430 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
| 431 | |
| 432 JavaThread *thread = JavaThread::current(); | |
| 433 JvmtiThreadEventMark jem(thread); | |
| 434 JvmtiJavaThreadEventTransition jet(thread); | |
| 435 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
| 436 if (callback != NULL) { | |
| 437 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
| 438 } | |
| 439 } | |
| 440 } | |
| 441 } | |
| 442 | |
| 443 | |
| 444 void JvmtiExport::post_vm_death() { | |
| 445 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
| 446 | |
| 447 JvmtiEnvIterator it; | |
| 448 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 449 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
| 450 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
| 451 | |
| 452 JavaThread *thread = JavaThread::current(); | |
| 453 JvmtiEventMark jem(thread); | |
| 454 JvmtiJavaThreadEventTransition jet(thread); | |
| 455 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
| 456 if (callback != NULL) { | |
| 457 (*callback)(env->jvmti_external(), jem.jni_env()); | |
| 458 } | |
| 459 } | |
| 460 } | |
| 461 | |
| 462 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
| 463 JvmtiEventController::vm_death(); | |
| 464 } | |
| 465 | |
| 466 char** | |
| 467 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
| 468 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
| 469 // go away while we iterate them. No locks during VM bring-up. | |
| 470 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
| 471 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
| 472 } else { | |
| 473 MutexLocker mu(JvmtiThreadState_lock); | |
| 474 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
| 475 } | |
| 476 } | |
| 477 | |
| 478 class JvmtiClassFileLoadHookPoster : public StackObj { | |
| 479 private: | |
| 480 symbolHandle _h_name; | |
| 481 Handle _class_loader; | |
| 482 Handle _h_protection_domain; | |
| 483 unsigned char ** _data_ptr; | |
| 484 unsigned char ** _end_ptr; | |
| 485 JavaThread * _thread; | |
| 486 jint _curr_len; | |
| 487 unsigned char * _curr_data; | |
| 488 JvmtiEnv * _curr_env; | |
| 489 jint * _cached_length_ptr; | |
| 490 unsigned char ** _cached_data_ptr; | |
| 491 JvmtiThreadState * _state; | |
| 492 KlassHandle * _h_class_being_redefined; | |
| 493 JvmtiClassLoadKind _load_kind; | |
| 494 | |
| 495 public: | |
| 496 inline JvmtiClassFileLoadHookPoster(symbolHandle h_name, Handle class_loader, | |
| 497 Handle h_protection_domain, | |
| 498 unsigned char **data_ptr, unsigned char **end_ptr, | |
| 499 unsigned char **cached_data_ptr, | |
| 500 jint *cached_length_ptr) { | |
| 501 _h_name = h_name; | |
| 502 _class_loader = class_loader; | |
| 503 _h_protection_domain = h_protection_domain; | |
| 504 _data_ptr = data_ptr; | |
| 505 _end_ptr = end_ptr; | |
| 506 _thread = JavaThread::current(); | |
| 507 _curr_len = *end_ptr - *data_ptr; | |
| 508 _curr_data = *data_ptr; | |
| 509 _curr_env = NULL; | |
| 510 _cached_length_ptr = cached_length_ptr; | |
| 511 _cached_data_ptr = cached_data_ptr; | |
| 512 *_cached_length_ptr = 0; | |
| 513 *_cached_data_ptr = NULL; | |
| 514 | |
| 515 _state = _thread->jvmti_thread_state(); | |
| 516 if (_state != NULL) { | |
| 517 _h_class_being_redefined = _state->get_class_being_redefined(); | |
| 518 _load_kind = _state->get_class_load_kind(); | |
| 519 // Clear class_being_redefined flag here. The action | |
| 520 // from agent handler could generate a new class file load | |
| 521 // hook event and if it is not cleared the new event generated | |
| 522 // from regular class file load could have this stale redefined | |
| 523 // class handle info. | |
| 524 _state->clear_class_being_redefined(); | |
| 525 } else { | |
| 526 // redefine and retransform will always set the thread state | |
| 527 _h_class_being_redefined = (KlassHandle *) NULL; | |
| 528 _load_kind = jvmti_class_load_kind_load; | |
| 529 } | |
| 530 } | |
| 531 | |
| 532 void post() { | |
| 533 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
| 534 // ("JVMTI [%s] class file load hook event triggered", | |
| 535 // JvmtiTrace::safe_get_thread_name(_thread))); | |
| 536 post_all_envs(); | |
| 537 copy_modified_data(); | |
| 538 } | |
| 539 | |
| 540 private: | |
| 541 void post_all_envs() { | |
| 542 if (_load_kind != jvmti_class_load_kind_retransform) { | |
| 543 // for class load and redefine, | |
| 544 // call the non-retransformable agents | |
| 545 JvmtiEnvIterator it; | |
| 546 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 547 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
| 548 // non-retransformable agents cannot retransform back, | |
| 549 // so no need to cache the original class file bytes | |
| 550 post_to_env(env, false); | |
| 551 } | |
| 552 } | |
| 553 } | |
| 554 JvmtiEnvIterator it; | |
| 555 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 556 // retransformable agents get all events | |
| 557 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
| 558 // retransformable agents need to cache the original class file | |
| 559 // bytes if changes are made via the ClassFileLoadHook | |
| 560 post_to_env(env, true); | |
| 561 } | |
| 562 } | |
| 563 } | |
| 564 | |
| 565 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
| 566 unsigned char *new_data = NULL; | |
| 567 jint new_len = 0; | |
| 568 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
| 569 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
| 570 // JvmtiTrace::safe_get_thread_name(_thread), | |
| 571 // _h_name.is_null() ? "NULL" : _h_name->as_utf8(), | |
| 572 // _curr_data, _curr_len )); | |
| 573 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
| 574 _h_protection_domain, | |
| 575 _h_class_being_redefined); | |
| 576 JvmtiJavaThreadEventTransition jet(_thread); | |
| 577 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
| 578 NULL : jem.jni_env(); | |
| 579 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
| 580 if (callback != NULL) { | |
| 581 (*callback)(env->jvmti_external(), jni_env, | |
| 582 jem.class_being_redefined(), | |
| 583 jem.jloader(), jem.class_name(), | |
| 584 jem.protection_domain(), | |
| 585 _curr_len, _curr_data, | |
| 586 &new_len, &new_data); | |
| 587 } | |
| 588 if (new_data != NULL) { | |
| 589 // this agent has modified class data. | |
| 590 if (caching_needed && *_cached_data_ptr == NULL) { | |
| 591 // data has been changed by the new retransformable agent | |
| 592 // and it hasn't already been cached, cache it | |
| 593 *_cached_data_ptr = (unsigned char *)os::malloc(_curr_len); | |
| 594 memcpy(*_cached_data_ptr, _curr_data, _curr_len); | |
| 595 *_cached_length_ptr = _curr_len; | |
| 596 } | |
| 597 | |
| 598 if (_curr_data != *_data_ptr) { | |
| 599 // curr_data is previous agent modified class data. | |
| 600 // And this has been changed by the new agent so | |
| 601 // we can delete it now. | |
| 602 _curr_env->Deallocate(_curr_data); | |
| 603 } | |
| 604 | |
| 605 // Class file data has changed by the current agent. | |
| 606 _curr_data = new_data; | |
| 607 _curr_len = new_len; | |
| 608 // Save the current agent env we need this to deallocate the | |
| 609 // memory allocated by this agent. | |
| 610 _curr_env = env; | |
| 611 } | |
| 612 } | |
| 613 | |
| 614 void copy_modified_data() { | |
| 615 // if one of the agent has modified class file data. | |
| 616 // Copy modified class data to new resources array. | |
| 617 if (_curr_data != *_data_ptr) { | |
| 618 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
| 619 memcpy(*_data_ptr, _curr_data, _curr_len); | |
| 620 *_end_ptr = *_data_ptr + _curr_len; | |
| 621 _curr_env->Deallocate(_curr_data); | |
| 622 } | |
| 623 } | |
| 624 }; | |
| 625 | |
| 626 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
| 627 | |
| 628 // this entry is for class file load hook on class load, redefine and retransform | |
| 629 void JvmtiExport::post_class_file_load_hook(symbolHandle h_name, | |
| 630 Handle class_loader, | |
| 631 Handle h_protection_domain, | |
| 632 unsigned char **data_ptr, | |
| 633 unsigned char **end_ptr, | |
| 634 unsigned char **cached_data_ptr, | |
| 635 jint *cached_length_ptr) { | |
| 636 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, | |
| 637 h_protection_domain, | |
| 638 data_ptr, end_ptr, | |
| 639 cached_data_ptr, | |
| 640 cached_length_ptr); | |
| 641 poster.post(); | |
| 642 } | |
| 643 | |
| 644 void JvmtiExport::report_unsupported(bool on) { | |
| 645 // If any JVMTI service is turned on, we need to exit before native code | |
| 646 // tries to access nonexistant services. | |
| 647 if (on) { | |
| 648 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 | |
| 653 #ifndef JVMTI_KERNEL | |
| 654 static inline klassOop oop_to_klassOop(oop obj) { | |
| 655 klassOop k = obj->klass(); | |
| 656 | |
| 657 // if the object is a java.lang.Class then return the java mirror | |
| 1142 | 658 if (k == SystemDictionary::Class_klass()) { |
| 0 | 659 if (!java_lang_Class::is_primitive(obj)) { |
| 660 k = java_lang_Class::as_klassOop(obj); | |
| 661 assert(k != NULL, "class for non-primitive mirror must exist"); | |
| 662 } | |
| 663 } | |
| 664 return k; | |
| 665 } | |
| 666 | |
| 667 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
| 668 private: | |
| 669 jobject _jobj; | |
| 670 jlong _size; | |
| 671 public: | |
| 672 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klassOop(obj)) { | |
| 673 _jobj = (jobject)to_jobject(obj); | |
| 674 _size = obj->size() * wordSize; | |
| 675 }; | |
| 676 jobject jni_jobject() { return _jobj; } | |
| 677 jlong size() { return _size; } | |
| 678 }; | |
| 679 | |
| 680 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
| 681 private: | |
| 682 jint _code_size; | |
| 683 const void *_code_data; | |
| 684 jint _map_length; | |
| 685 jvmtiAddrLocationMap *_map; | |
| 686 const void *_compile_info; | |
| 687 public: | |
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688 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
| 0 | 689 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
| 690 _code_data = nm->code_begin(); | |
| 691 _code_size = nm->code_size(); | |
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692 _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
| 0 | 693 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
| 694 } | |
| 695 ~JvmtiCompiledMethodLoadEventMark() { | |
| 696 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map); | |
| 697 } | |
| 698 | |
| 699 jint code_size() { return _code_size; } | |
| 700 const void *code_data() { return _code_data; } | |
| 701 jint map_length() { return _map_length; } | |
| 702 const jvmtiAddrLocationMap* map() { return _map; } | |
| 703 const void *compile_info() { return _compile_info; } | |
| 704 }; | |
| 705 | |
| 706 | |
| 707 | |
| 708 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
| 709 private: | |
| 710 jobject _jobj; | |
| 711 public: | |
| 712 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
| 713 : JvmtiThreadEventMark(thread){ | |
| 714 _jobj = to_jobject(object); | |
| 715 } | |
| 716 jobject jni_object() { return _jobj; } | |
| 717 }; | |
| 718 | |
| 719 /////////////////////////////////////////////////////////////// | |
| 720 // | |
| 721 // pending CompiledMethodUnload support | |
| 722 // | |
| 723 | |
| 724 bool JvmtiExport::_have_pending_compiled_method_unload_events; | |
| 725 GrowableArray<jmethodID>* JvmtiExport::_pending_compiled_method_unload_method_ids; | |
| 726 GrowableArray<const void *>* JvmtiExport::_pending_compiled_method_unload_code_begins; | |
| 727 JavaThread* JvmtiExport::_current_poster; | |
| 728 | |
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729 void JvmtiExport::post_compiled_method_unload_internal(JavaThread* self, jmethodID method, const void *code_begin) { |
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730 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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731 ("JVMTI [%s] method compile unload event triggered", |
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732 JvmtiTrace::safe_get_thread_name(self))); |
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733 |
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734 // post the event for each environment that has this event enabled. |
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735 JvmtiEnvIterator it; |
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736 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
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737 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
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738 |
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739 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
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740 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
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741 JvmtiTrace::safe_get_thread_name(self), method)); |
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742 |
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743 ResourceMark rm(self); |
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744 |
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745 JvmtiEventMark jem(self); |
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746 JvmtiJavaThreadEventTransition jet(self); |
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747 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
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748 if (callback != NULL) { |
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749 (*callback)(env->jvmti_external(), method, code_begin); |
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750 } |
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751 } |
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752 } |
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753 } |
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754 |
| 0 | 755 // post any pending CompiledMethodUnload events |
| 756 | |
| 757 void JvmtiExport::post_pending_compiled_method_unload_events() { | |
| 758 JavaThread* self = JavaThread::current(); | |
| 759 assert(!self->owns_locks(), "can't hold locks"); | |
| 760 | |
| 761 // Indicates if this is the first activiation of this function. | |
| 762 // In theory the profiler's callback could call back into VM and provoke | |
| 763 // another CompiledMethodLoad event to be posted from this thread. As the | |
| 764 // stack rewinds we need to ensure that the original activation does the | |
| 765 // completion and notifies any waiters. | |
| 766 bool first_activation = false; | |
| 767 | |
| 768 // the jmethodID (may not be valid) to be used for a single event | |
| 769 jmethodID method; | |
| 770 const void *code_begin; | |
| 771 | |
| 772 // grab the monitor and check if another thread is already posting | |
| 773 // events. If there is another thread posting events then we wait | |
| 774 // until it completes. (In theory we could check the pending events to | |
| 775 // see if any of the addresses overlap with the event that we want to | |
| 776 // post but as it will happen so rarely we just block any thread waiting | |
| 777 // to post a CompiledMethodLoad or DynamicCodeGenerated event until all | |
| 778 // pending CompiledMethodUnload events have been posted). | |
| 779 // | |
| 780 // If another thread isn't posting we examine the list of pending jmethodIDs. | |
| 781 // If the list is empty then we are done. If it's not empty then this thread | |
| 782 // (self) becomes the pending event poster and we remove the top (last) | |
| 783 // event from the list. Note that this means we remove the newest event first | |
| 784 // but as they are all CompiledMethodUnload events the order doesn't matter. | |
| 785 // Once we have removed a jmethodID then we exit the monitor. Any other thread | |
| 786 // wanting to post a CompiledMethodLoad or DynamicCodeGenerated event will | |
| 787 // be forced to wait on the monitor. | |
| 788 { | |
| 789 MutexLocker mu(JvmtiPendingEvent_lock); | |
| 790 if (_current_poster != self) { | |
| 791 while (_current_poster != NULL) { | |
| 792 JvmtiPendingEvent_lock->wait(); | |
| 793 } | |
| 794 } | |
| 795 if ((_pending_compiled_method_unload_method_ids == NULL) || | |
| 796 (_pending_compiled_method_unload_method_ids->length() == 0)) { | |
| 797 return; | |
| 798 } | |
| 799 if (_current_poster == NULL) { | |
| 800 _current_poster = self; | |
| 801 first_activation = true; | |
| 802 } else { | |
| 803 // re-entrant | |
| 804 guarantee(_current_poster == self, "checking"); | |
| 805 } | |
| 806 method = _pending_compiled_method_unload_method_ids->pop(); | |
| 807 code_begin = _pending_compiled_method_unload_code_begins->pop(); | |
| 808 } | |
| 809 | |
| 810 // This thread is the pending event poster so it first posts the CompiledMethodUnload | |
| 811 // event for the jmethodID that has been removed from the list. Once posted it | |
| 812 // re-grabs the monitor and checks the list again. If the list is empty then and this | |
| 813 // is the first activation of the function then we reset the _have_pending_events | |
| 814 // flag, cleanup _current_poster to indicate that no thread is now servicing the | |
| 815 // pending events list, and finally notify any thread that might be waiting. | |
| 816 for (;;) { | |
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817 post_compiled_method_unload_internal(self, method, code_begin); |
| 0 | 818 |
| 819 // event posted, now re-grab monitor and get the next event | |
| 820 // If there's no next event then we are done. If this is the first | |
| 821 // activiation of this function by this thread notify any waiters | |
| 822 // so that they can post. | |
| 823 { | |
| 824 MutexLocker ml(JvmtiPendingEvent_lock); | |
| 825 if (_pending_compiled_method_unload_method_ids->length() == 0) { | |
| 826 if (first_activation) { | |
| 827 _have_pending_compiled_method_unload_events = false; | |
| 828 _current_poster = NULL; | |
| 829 JvmtiPendingEvent_lock->notify_all(); | |
| 830 } | |
| 831 return; | |
| 832 } | |
| 833 method = _pending_compiled_method_unload_method_ids->pop(); | |
| 834 code_begin = _pending_compiled_method_unload_code_begins->pop(); | |
| 835 } | |
| 836 } | |
| 837 } | |
| 838 | |
| 839 /////////////////////////////////////////////////////////////// | |
| 840 // | |
| 841 // JvmtiExport | |
| 842 // | |
| 843 | |
| 844 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, methodOop method, address location) { | |
| 845 HandleMark hm(thread); | |
| 846 methodHandle mh(thread, method); | |
| 847 | |
| 848 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 849 if (state == NULL) { | |
| 850 return; | |
| 851 } | |
| 852 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
| 853 JvmtiTrace::safe_get_thread_name(thread))); | |
| 854 JvmtiEnvThreadStateIterator it(state); | |
| 855 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 856 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
| 857 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
| 858 ThreadState old_os_state = thread->osthread()->get_state(); | |
| 859 thread->osthread()->set_state(BREAKPOINTED); | |
| 860 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
| 861 JvmtiTrace::safe_get_thread_name(thread), | |
| 862 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 863 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 864 location - mh()->code_base() )); | |
| 865 | |
| 866 JvmtiEnv *env = ets->get_env(); | |
| 867 JvmtiLocationEventMark jem(thread, mh, location); | |
| 868 JvmtiJavaThreadEventTransition jet(thread); | |
| 869 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
| 870 if (callback != NULL) { | |
| 871 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 872 jem.jni_methodID(), jem.location()); | |
| 873 } | |
| 874 | |
| 875 ets->set_breakpoint_posted(); | |
| 876 thread->osthread()->set_state(old_os_state); | |
| 877 } | |
| 878 } | |
| 879 } | |
| 880 | |
| 881 ////////////////////////////////////////////////////////////////////////////// | |
| 882 | |
| 883 bool JvmtiExport::_can_get_source_debug_extension = false; | |
| 884 bool JvmtiExport::_can_maintain_original_method_order = false; | |
| 885 bool JvmtiExport::_can_post_interpreter_events = false; | |
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886 bool JvmtiExport::_can_post_on_exceptions = false; |
| 0 | 887 bool JvmtiExport::_can_post_breakpoint = false; |
| 888 bool JvmtiExport::_can_post_field_access = false; | |
| 889 bool JvmtiExport::_can_post_field_modification = false; | |
| 890 bool JvmtiExport::_can_post_method_entry = false; | |
| 891 bool JvmtiExport::_can_post_method_exit = false; | |
| 892 bool JvmtiExport::_can_pop_frame = false; | |
| 893 bool JvmtiExport::_can_force_early_return = false; | |
| 894 | |
| 895 bool JvmtiExport::_should_post_single_step = false; | |
| 896 bool JvmtiExport::_should_post_field_access = false; | |
| 897 bool JvmtiExport::_should_post_field_modification = false; | |
| 898 bool JvmtiExport::_should_post_class_load = false; | |
| 899 bool JvmtiExport::_should_post_class_prepare = false; | |
| 900 bool JvmtiExport::_should_post_class_unload = false; | |
| 901 bool JvmtiExport::_should_post_thread_life = false; | |
| 902 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
| 903 bool JvmtiExport::_should_post_native_method_bind = false; | |
| 904 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
| 905 bool JvmtiExport::_should_post_data_dump = false; | |
| 906 bool JvmtiExport::_should_post_compiled_method_load = false; | |
| 907 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
| 908 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
| 909 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
| 910 bool JvmtiExport::_should_post_monitor_wait = false; | |
| 911 bool JvmtiExport::_should_post_monitor_waited = false; | |
| 912 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
| 913 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
| 914 bool JvmtiExport::_should_post_object_free = false; | |
| 915 bool JvmtiExport::_should_post_resource_exhausted = false; | |
| 916 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
|
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917 bool JvmtiExport::_should_post_on_exceptions = false; |
| 0 | 918 |
| 919 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 920 | |
| 921 | |
| 922 // | |
| 923 // JVMTI single step management | |
| 924 // | |
| 925 void JvmtiExport::at_single_stepping_point(JavaThread *thread, methodOop method, address location) { | |
| 926 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); | |
| 927 | |
| 928 HandleMark hm(thread); | |
| 929 methodHandle mh(thread, method); | |
| 930 | |
| 931 // update information about current location and post a step event | |
| 932 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 933 if (state == NULL) { | |
| 934 return; | |
| 935 } | |
| 936 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
| 937 JvmtiTrace::safe_get_thread_name(thread))); | |
| 938 if (!state->hide_single_stepping()) { | |
| 939 if (state->is_pending_step_for_popframe()) { | |
| 940 state->process_pending_step_for_popframe(); | |
| 941 } | |
| 942 if (state->is_pending_step_for_earlyret()) { | |
| 943 state->process_pending_step_for_earlyret(); | |
| 944 } | |
| 945 JvmtiExport::post_single_step(thread, mh(), location); | |
| 946 } | |
| 947 } | |
| 948 | |
| 949 | |
| 950 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
| 951 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 952 if (state != NULL) { | |
| 953 state->clear_hide_single_stepping(); | |
| 954 } | |
| 955 } | |
| 956 | |
| 957 | |
| 958 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
| 959 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 960 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
| 961 state->set_hide_single_stepping(); | |
| 962 return true; | |
| 963 } else { | |
| 964 return false; | |
| 965 } | |
| 966 } | |
| 967 | |
| 968 void JvmtiExport::post_class_load(JavaThread *thread, klassOop klass) { | |
| 969 HandleMark hm(thread); | |
| 970 KlassHandle kh(thread, klass); | |
| 971 | |
| 972 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
| 973 JvmtiTrace::safe_get_thread_name(thread))); | |
| 974 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
| 975 if (state == NULL) { | |
| 976 return; | |
| 977 } | |
| 978 JvmtiEnvThreadStateIterator it(state); | |
| 979 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 980 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
| 981 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
| 982 JvmtiTrace::safe_get_thread_name(thread), | |
| 983 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
| 984 | |
| 985 JvmtiEnv *env = ets->get_env(); | |
| 986 JvmtiClassEventMark jem(thread, kh()); | |
| 987 JvmtiJavaThreadEventTransition jet(thread); | |
| 988 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
| 989 if (callback != NULL) { | |
| 990 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
| 991 } | |
| 992 } | |
| 993 } | |
| 994 } | |
| 995 | |
| 996 | |
| 997 void JvmtiExport::post_class_prepare(JavaThread *thread, klassOop klass) { | |
| 998 HandleMark hm(thread); | |
| 999 KlassHandle kh(thread, klass); | |
| 1000 | |
| 1001 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
| 1002 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1003 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
| 1004 if (state == NULL) { | |
| 1005 return; | |
| 1006 } | |
| 1007 JvmtiEnvThreadStateIterator it(state); | |
| 1008 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1009 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
| 1010 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
| 1011 JvmtiTrace::safe_get_thread_name(thread), | |
| 1012 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
| 1013 | |
| 1014 JvmtiEnv *env = ets->get_env(); | |
| 1015 JvmtiClassEventMark jem(thread, kh()); | |
| 1016 JvmtiJavaThreadEventTransition jet(thread); | |
| 1017 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
| 1018 if (callback != NULL) { | |
| 1019 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
| 1020 } | |
| 1021 } | |
| 1022 } | |
| 1023 } | |
| 1024 | |
| 1025 void JvmtiExport::post_class_unload(klassOop klass) { | |
| 1026 Thread *thread = Thread::current(); | |
| 1027 HandleMark hm(thread); | |
| 1028 KlassHandle kh(thread, klass); | |
| 1029 | |
| 1030 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
| 1031 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
| 1032 assert(thread->is_VM_thread(), "wrong thread"); | |
| 1033 | |
| 1034 // get JavaThread for whom we are proxy | |
| 1035 JavaThread *real_thread = | |
| 1036 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
| 1037 | |
| 1038 JvmtiEnvIterator it; | |
| 1039 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1040 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
| 1041 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
| 1042 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
| 1043 | |
| 1044 // do everything manually, since this is a proxy - needs special care | |
| 1045 JNIEnv* jni_env = real_thread->jni_environment(); | |
| 1046 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
| 1047 jclass jk = (jclass)JNIHandles::make_local(real_thread, Klass::cast(kh())->java_mirror()); | |
| 1048 | |
| 1049 // Before we call the JVMTI agent, we have to set the state in the | |
| 1050 // thread for which we are proxying. | |
| 1051 JavaThreadState prev_state = real_thread->thread_state(); | |
| 1052 assert(prev_state == _thread_blocked, "JavaThread should be at safepoint"); | |
| 1053 real_thread->set_thread_state(_thread_in_native); | |
| 1054 | |
| 1055 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
| 1056 if (callback != NULL) { | |
| 1057 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
| 1058 } | |
| 1059 | |
| 1060 assert(real_thread->thread_state() == _thread_in_native, | |
| 1061 "JavaThread should be in native"); | |
| 1062 real_thread->set_thread_state(prev_state); | |
| 1063 | |
| 1064 JNIHandles::destroy_local(jk); | |
| 1065 JNIHandles::destroy_local(jt); | |
| 1066 } | |
| 1067 } | |
| 1068 } | |
| 1069 } | |
| 1070 | |
| 1071 | |
| 1072 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
| 1073 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
| 1074 | |
| 1075 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
| 1076 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1077 | |
| 1078 // do JVMTI thread initialization (if needed) | |
| 1079 JvmtiEventController::thread_started(thread); | |
| 1080 | |
| 1081 // Do not post thread start event for hidden java thread. | |
| 1082 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
| 1083 !thread->is_hidden_from_external_view()) { | |
| 1084 JvmtiEnvIterator it; | |
| 1085 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1086 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
| 1087 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
| 1088 JvmtiTrace::safe_get_thread_name(thread) )); | |
| 1089 | |
| 1090 JvmtiThreadEventMark jem(thread); | |
| 1091 JvmtiJavaThreadEventTransition jet(thread); | |
| 1092 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
| 1093 if (callback != NULL) { | |
| 1094 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
| 1095 } | |
| 1096 } | |
| 1097 } | |
| 1098 } | |
| 1099 } | |
| 1100 | |
| 1101 | |
| 1102 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
| 1103 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
| 1104 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1105 | |
| 1106 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1107 if (state == NULL) { | |
| 1108 return; | |
| 1109 } | |
| 1110 | |
| 1111 // Do not post thread end event for hidden java thread. | |
| 1112 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
| 1113 !thread->is_hidden_from_external_view()) { | |
| 1114 | |
| 1115 JvmtiEnvThreadStateIterator it(state); | |
| 1116 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1117 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
| 1118 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
| 1119 JvmtiTrace::safe_get_thread_name(thread) )); | |
| 1120 | |
| 1121 JvmtiEnv *env = ets->get_env(); | |
| 1122 JvmtiThreadEventMark jem(thread); | |
| 1123 JvmtiJavaThreadEventTransition jet(thread); | |
| 1124 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
| 1125 if (callback != NULL) { | |
| 1126 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
| 1127 } | |
| 1128 } | |
| 1129 } | |
| 1130 } | |
| 1131 } | |
| 1132 | |
| 1133 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
| 1134 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
| 1135 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
| 1136 | |
| 1137 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
| 1138 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
| 1139 | |
| 1140 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
| 1141 if (callback != NULL) { | |
| 1142 (*callback)(env->jvmti_external(), tag); | |
| 1143 } | |
| 1144 } | |
| 1145 | |
| 1146 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
| 1147 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
| 1148 | |
| 1149 JvmtiEnvIterator it; | |
| 1150 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1151 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
| 1152 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
| 1153 | |
| 1154 JavaThread *thread = JavaThread::current(); | |
| 1155 JvmtiThreadEventMark jem(thread); | |
| 1156 JvmtiJavaThreadEventTransition jet(thread); | |
| 1157 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
| 1158 if (callback != NULL) { | |
| 1159 (*callback)(env->jvmti_external(), jem.jni_env(), | |
| 1160 resource_exhausted_flags, NULL, description); | |
| 1161 } | |
| 1162 } | |
| 1163 } | |
| 1164 } | |
| 1165 | |
| 1166 void JvmtiExport::post_method_entry(JavaThread *thread, methodOop method, frame current_frame) { | |
| 1167 HandleMark hm(thread); | |
| 1168 methodHandle mh(thread, method); | |
| 1169 | |
| 1170 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
| 1171 JvmtiTrace::safe_get_thread_name(thread), | |
| 1172 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1173 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1174 | |
| 1175 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
| 1176 if (state == NULL || !state->is_interp_only_mode()) { | |
| 1177 // for any thread that actually wants method entry, interp_only_mode is set | |
| 1178 return; | |
| 1179 } | |
| 1180 | |
| 1181 state->incr_cur_stack_depth(); | |
| 1182 | |
| 1183 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
| 1184 JvmtiEnvThreadStateIterator it(state); | |
| 1185 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1186 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
| 1187 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
| 1188 JvmtiTrace::safe_get_thread_name(thread), | |
| 1189 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1190 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1191 | |
| 1192 JvmtiEnv *env = ets->get_env(); | |
| 1193 JvmtiMethodEventMark jem(thread, mh); | |
| 1194 JvmtiJavaThreadEventTransition jet(thread); | |
| 1195 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
| 1196 if (callback != NULL) { | |
| 1197 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
| 1198 } | |
| 1199 } | |
| 1200 } | |
| 1201 } | |
| 1202 } | |
| 1203 | |
| 1204 void JvmtiExport::post_method_exit(JavaThread *thread, methodOop method, frame current_frame) { | |
| 1205 HandleMark hm(thread); | |
| 1206 methodHandle mh(thread, method); | |
| 1207 | |
| 1208 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
| 1209 JvmtiTrace::safe_get_thread_name(thread), | |
| 1210 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1211 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1212 | |
| 1213 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1214 if (state == NULL || !state->is_interp_only_mode()) { | |
| 1215 // for any thread that actually wants method exit, interp_only_mode is set | |
| 1216 return; | |
| 1217 } | |
| 1218 | |
| 1219 // return a flag when a method terminates by throwing an exception | |
| 1220 // i.e. if an exception is thrown and it's not caught by the current method | |
| 1221 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
| 1222 | |
| 1223 | |
| 1224 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
| 1225 Handle result; | |
| 1226 jvalue value; | |
| 1227 value.j = 0L; | |
| 1228 | |
| 1229 // if the method hasn't been popped because of an exception then we populate | |
| 1230 // the return_value parameter for the callback. At this point we only have | |
| 1231 // the address of a "raw result" and we just call into the interpreter to | |
| 1232 // convert this into a jvalue. | |
| 1233 if (!exception_exit) { | |
| 1234 oop oop_result; | |
| 1235 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
| 1236 if (type == T_OBJECT || type == T_ARRAY) { | |
| 1237 result = Handle(thread, oop_result); | |
| 1238 } | |
| 1239 } | |
| 1240 | |
| 1241 JvmtiEnvThreadStateIterator it(state); | |
| 1242 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1243 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
| 1244 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", | |
| 1245 JvmtiTrace::safe_get_thread_name(thread), | |
| 1246 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1247 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1248 | |
| 1249 JvmtiEnv *env = ets->get_env(); | |
| 1250 JvmtiMethodEventMark jem(thread, mh); | |
| 1251 if (result.not_null()) { | |
| 1252 value.l = JNIHandles::make_local(thread, result()); | |
| 1253 } | |
| 1254 JvmtiJavaThreadEventTransition jet(thread); | |
| 1255 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
| 1256 if (callback != NULL) { | |
| 1257 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1258 jem.jni_methodID(), exception_exit, value); | |
| 1259 } | |
| 1260 } | |
| 1261 } | |
| 1262 } | |
| 1263 | |
| 1264 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
| 1265 JvmtiEnvThreadStateIterator it(state); | |
| 1266 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1267 int cur_frame_number = state->cur_stack_depth(); | |
| 1268 | |
| 1269 if (ets->is_frame_pop(cur_frame_number)) { | |
| 1270 // we have a NotifyFramePop entry for this frame. | |
| 1271 // now check that this env/thread wants this event | |
| 1272 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
| 1273 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
| 1274 JvmtiTrace::safe_get_thread_name(thread), | |
| 1275 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1276 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1277 | |
| 1278 // we also need to issue a frame pop event for this frame | |
| 1279 JvmtiEnv *env = ets->get_env(); | |
| 1280 JvmtiMethodEventMark jem(thread, mh); | |
| 1281 JvmtiJavaThreadEventTransition jet(thread); | |
| 1282 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
| 1283 if (callback != NULL) { | |
| 1284 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1285 jem.jni_methodID(), exception_exit); | |
| 1286 } | |
| 1287 } | |
| 1288 // remove the frame's entry | |
| 1289 ets->clear_frame_pop(cur_frame_number); | |
| 1290 } | |
| 1291 } | |
| 1292 } | |
| 1293 | |
| 1294 state->decr_cur_stack_depth(); | |
| 1295 } | |
| 1296 | |
| 1297 | |
| 1298 // Todo: inline this for optimization | |
| 1299 void JvmtiExport::post_single_step(JavaThread *thread, methodOop method, address location) { | |
| 1300 HandleMark hm(thread); | |
| 1301 methodHandle mh(thread, method); | |
| 1302 | |
| 1303 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1304 if (state == NULL) { | |
| 1305 return; | |
| 1306 } | |
| 1307 JvmtiEnvThreadStateIterator it(state); | |
| 1308 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1309 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
| 1310 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
| 1311 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
| 1312 JvmtiTrace::safe_get_thread_name(thread), | |
| 1313 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1314 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1315 location - mh()->code_base() )); | |
| 1316 | |
| 1317 JvmtiEnv *env = ets->get_env(); | |
| 1318 JvmtiLocationEventMark jem(thread, mh, location); | |
| 1319 JvmtiJavaThreadEventTransition jet(thread); | |
| 1320 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
| 1321 if (callback != NULL) { | |
| 1322 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1323 jem.jni_methodID(), jem.location()); | |
| 1324 } | |
| 1325 | |
| 1326 ets->set_single_stepping_posted(); | |
| 1327 } | |
| 1328 } | |
| 1329 } | |
| 1330 | |
| 1331 | |
| 1332 void JvmtiExport::post_exception_throw(JavaThread *thread, methodOop method, address location, oop exception) { | |
| 1333 HandleMark hm(thread); | |
| 1334 methodHandle mh(thread, method); | |
| 1335 Handle exception_handle(thread, exception); | |
| 1336 | |
| 1337 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1338 if (state == NULL) { | |
| 1339 return; | |
| 1340 } | |
| 1341 | |
| 1342 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
| 1343 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1344 if (!state->is_exception_detected()) { | |
| 1345 state->set_exception_detected(); | |
| 1346 JvmtiEnvThreadStateIterator it(state); | |
| 1347 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1348 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
| 1349 | |
| 1350 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
| 1351 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
| 1352 JvmtiTrace::safe_get_thread_name(thread), | |
| 1353 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1354 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1355 location - mh()->code_base() )); | |
| 1356 | |
| 1357 JvmtiEnv *env = ets->get_env(); | |
| 1358 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
| 1359 | |
| 1360 // It's okay to clear these exceptions here because we duplicate | |
| 1361 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
| 1362 EXCEPTION_MARK; | |
| 1363 | |
| 1364 bool should_repeat; | |
| 1365 vframeStream st(thread); | |
| 1366 assert(!st.at_end(), "cannot be at end"); | |
| 1367 methodOop current_method = NULL; | |
| 1368 int current_bci = -1; | |
| 1369 do { | |
| 1370 current_method = st.method(); | |
| 1371 current_bci = st.bci(); | |
| 1372 do { | |
| 1373 should_repeat = false; | |
| 1374 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
| 1375 current_bci = current_method->fast_exception_handler_bci_for( | |
| 1376 eh_klass, current_bci, THREAD); | |
| 1377 if (HAS_PENDING_EXCEPTION) { | |
| 1378 exception_handle = KlassHandle(thread, PENDING_EXCEPTION); | |
| 1379 CLEAR_PENDING_EXCEPTION; | |
| 1380 should_repeat = true; | |
| 1381 } | |
| 1382 } while (should_repeat && (current_bci != -1)); | |
| 1383 st.next(); | |
| 1384 } while ((current_bci < 0) && (!st.at_end())); | |
| 1385 | |
| 1386 jmethodID catch_jmethodID; | |
| 1387 if (current_bci < 0) { | |
| 1388 catch_jmethodID = 0; | |
| 1389 current_bci = 0; | |
| 1390 } else { | |
| 1391 catch_jmethodID = jem.to_jmethodID( | |
| 1392 methodHandle(thread, current_method)); | |
| 1393 } | |
| 1394 | |
| 1395 JvmtiJavaThreadEventTransition jet(thread); | |
| 1396 jvmtiEventException callback = env->callbacks()->Exception; | |
| 1397 if (callback != NULL) { | |
| 1398 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1399 jem.jni_methodID(), jem.location(), | |
| 1400 jem.exception(), | |
| 1401 catch_jmethodID, current_bci); | |
| 1402 } | |
| 1403 } | |
| 1404 } | |
| 1405 } | |
| 1406 | |
| 1407 // frames may get popped because of this throw, be safe - invalidate cached depth | |
| 1408 state->invalidate_cur_stack_depth(); | |
| 1409 } | |
| 1410 | |
| 1411 | |
| 1412 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, methodOop method, address location, oop exception, bool in_handler_frame) { | |
| 1413 HandleMark hm(thread); | |
| 1414 methodHandle mh(thread, method); | |
| 1415 Handle exception_handle(thread, exception); | |
| 1416 | |
| 1417 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1418 if (state == NULL) { | |
| 1419 return; | |
| 1420 } | |
| 1421 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
| 1422 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
| 1423 JvmtiTrace::safe_get_thread_name(thread), | |
| 1424 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1425 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1426 location==0? "no location:" : "", | |
| 1427 location==0? 0 : location - mh()->code_base(), | |
| 1428 in_handler_frame? "in handler frame" : "not handler frame" )); | |
| 1429 | |
| 1430 if (state->is_exception_detected()) { | |
| 1431 | |
| 1432 state->invalidate_cur_stack_depth(); | |
| 1433 if (!in_handler_frame) { | |
| 1434 // Not in exception handler. | |
| 1435 if(state->is_interp_only_mode()) { | |
| 1436 // method exit and frame pop events are posted only in interp mode. | |
| 1437 // When these events are enabled code should be in running in interp mode. | |
| 1438 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
| 1439 // The cached cur_stack_depth might have changed from the | |
| 1440 // operations of frame pop or method exit. We are not 100% sure | |
| 1441 // the cached cur_stack_depth is still valid depth so invalidate | |
| 1442 // it. | |
| 1443 state->invalidate_cur_stack_depth(); | |
| 1444 } | |
| 1445 } else { | |
| 1446 // In exception handler frame. Report exception catch. | |
| 1447 assert(location != NULL, "must be a known location"); | |
| 1448 // Update cur_stack_depth - the frames above the current frame | |
| 1449 // have been unwound due to this exception: | |
| 1450 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
| 1451 state->set_exception_caught(); | |
| 1452 | |
| 1453 JvmtiEnvThreadStateIterator it(state); | |
| 1454 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1455 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
| 1456 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
| 1457 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
| 1458 JvmtiTrace::safe_get_thread_name(thread), | |
| 1459 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1460 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1461 location - mh()->code_base() )); | |
| 1462 | |
| 1463 JvmtiEnv *env = ets->get_env(); | |
| 1464 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
| 1465 JvmtiJavaThreadEventTransition jet(thread); | |
| 1466 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
| 1467 if (callback != NULL) { | |
| 1468 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1469 jem.jni_methodID(), jem.location(), | |
| 1470 jem.exception()); | |
| 1471 } | |
| 1472 } | |
| 1473 } | |
| 1474 } | |
| 1475 } | |
| 1476 } | |
| 1477 | |
| 1478 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
| 1479 klassOop klass, jfieldID fieldID, bool is_static) { | |
| 1480 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1481 // At least one field access watch is set so we have more work | |
| 1482 // to do. This wrapper is used by entry points that allow us | |
| 1483 // to create handles in post_field_access_by_jni(). | |
| 1484 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
| 1485 // event posting can block so refetch oop if we were passed a jobj | |
| 1486 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1487 } | |
| 1488 return obj; | |
| 1489 } | |
| 1490 | |
| 1491 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
| 1492 klassOop klass, jfieldID fieldID, bool is_static) { | |
| 1493 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1494 // At least one field access watch is set so we have more work | |
| 1495 // to do. This wrapper is used by "quick" entry points that don't | |
| 1496 // allow us to create handles in post_field_access_by_jni(). We | |
| 1497 // override that with a ResetNoHandleMark. | |
| 1498 ResetNoHandleMark rnhm; | |
| 1499 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
| 1500 // event posting can block so refetch oop if we were passed a jobj | |
| 1501 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1502 } | |
| 1503 return obj; | |
| 1504 } | |
| 1505 | |
| 1506 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
| 1507 klassOop klass, jfieldID fieldID, bool is_static) { | |
| 1508 // We must be called with a Java context in order to provide reasonable | |
| 1509 // values for the klazz, method, and location fields. The callers of this | |
| 1510 // function don't make the call unless there is a Java context. | |
| 1511 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
| 1512 | |
| 1513 ResourceMark rm; | |
| 1514 fieldDescriptor fd; | |
| 1515 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
| 1516 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
| 1517 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
| 1518 if (!valid_fieldID) return; | |
| 1519 // field accesses are not watched so bail | |
| 1520 if (!fd.is_field_access_watched()) return; | |
| 1521 | |
| 1522 HandleMark hm(thread); | |
| 1523 KlassHandle h_klass(thread, klass); | |
| 1524 Handle h_obj; | |
| 1525 if (!is_static) { | |
| 1526 // non-static field accessors have an object, but we need a handle | |
| 1527 assert(obj != NULL, "non-static needs an object"); | |
| 1528 h_obj = Handle(thread, obj); | |
| 1529 } | |
| 1530 post_field_access(thread, | |
| 1531 thread->last_frame().interpreter_frame_method(), | |
| 1532 thread->last_frame().interpreter_frame_bcp(), | |
| 1533 h_klass, h_obj, fieldID); | |
| 1534 } | |
| 1535 | |
| 1536 void JvmtiExport::post_field_access(JavaThread *thread, methodOop method, | |
| 1537 address location, KlassHandle field_klass, Handle object, jfieldID field) { | |
| 1538 | |
| 1539 HandleMark hm(thread); | |
| 1540 methodHandle mh(thread, method); | |
| 1541 | |
| 1542 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1543 if (state == NULL) { | |
| 1544 return; | |
| 1545 } | |
| 1546 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
| 1547 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1548 JvmtiEnvThreadStateIterator it(state); | |
| 1549 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1550 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
| 1551 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
| 1552 JvmtiTrace::safe_get_thread_name(thread), | |
| 1553 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1554 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1555 location - mh()->code_base() )); | |
| 1556 | |
| 1557 JvmtiEnv *env = ets->get_env(); | |
| 1558 JvmtiLocationEventMark jem(thread, mh, location); | |
| 1559 jclass field_jclass = jem.to_jclass(field_klass()); | |
| 1560 jobject field_jobject = jem.to_jobject(object()); | |
| 1561 JvmtiJavaThreadEventTransition jet(thread); | |
| 1562 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
| 1563 if (callback != NULL) { | |
| 1564 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1565 jem.jni_methodID(), jem.location(), | |
| 1566 field_jclass, field_jobject, field); | |
| 1567 } | |
| 1568 } | |
| 1569 } | |
| 1570 } | |
| 1571 | |
| 1572 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
| 1573 klassOop klass, jfieldID fieldID, bool is_static, | |
| 1574 char sig_type, jvalue *value) { | |
| 1575 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1576 // At least one field modification watch is set so we have more work | |
| 1577 // to do. This wrapper is used by entry points that allow us | |
| 1578 // to create handles in post_field_modification_by_jni(). | |
| 1579 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
| 1580 // event posting can block so refetch oop if we were passed a jobj | |
| 1581 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1582 } | |
| 1583 return obj; | |
| 1584 } | |
| 1585 | |
| 1586 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
| 1587 klassOop klass, jfieldID fieldID, bool is_static, | |
| 1588 char sig_type, jvalue *value) { | |
| 1589 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1590 // At least one field modification watch is set so we have more work | |
| 1591 // to do. This wrapper is used by "quick" entry points that don't | |
| 1592 // allow us to create handles in post_field_modification_by_jni(). We | |
| 1593 // override that with a ResetNoHandleMark. | |
| 1594 ResetNoHandleMark rnhm; | |
| 1595 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
| 1596 // event posting can block so refetch oop if we were passed a jobj | |
| 1597 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1598 } | |
| 1599 return obj; | |
| 1600 } | |
| 1601 | |
| 1602 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
| 1603 klassOop klass, jfieldID fieldID, bool is_static, | |
| 1604 char sig_type, jvalue *value) { | |
| 1605 // We must be called with a Java context in order to provide reasonable | |
| 1606 // values for the klazz, method, and location fields. The callers of this | |
| 1607 // function don't make the call unless there is a Java context. | |
| 1608 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
| 1609 | |
| 1610 ResourceMark rm; | |
| 1611 fieldDescriptor fd; | |
| 1612 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
| 1613 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
| 1614 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
| 1615 if (!valid_fieldID) return; | |
| 1616 // field modifications are not watched so bail | |
| 1617 if (!fd.is_field_modification_watched()) return; | |
| 1618 | |
| 1619 HandleMark hm(thread); | |
| 1620 | |
| 1621 Handle h_obj; | |
| 1622 if (!is_static) { | |
| 1623 // non-static field accessors have an object, but we need a handle | |
| 1624 assert(obj != NULL, "non-static needs an object"); | |
| 1625 h_obj = Handle(thread, obj); | |
| 1626 } | |
| 1627 KlassHandle h_klass(thread, klass); | |
| 1628 post_field_modification(thread, | |
| 1629 thread->last_frame().interpreter_frame_method(), | |
| 1630 thread->last_frame().interpreter_frame_bcp(), | |
| 1631 h_klass, h_obj, fieldID, sig_type, value); | |
| 1632 } | |
| 1633 | |
| 1634 void JvmtiExport::post_raw_field_modification(JavaThread *thread, methodOop method, | |
| 1635 address location, KlassHandle field_klass, Handle object, jfieldID field, | |
| 1636 char sig_type, jvalue *value) { | |
| 1637 | |
| 1638 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'C' || sig_type == 'S') { | |
| 1639 // 'I' instructions are used for byte, char, short and int. | |
| 1640 // determine which it really is, and convert | |
| 1641 fieldDescriptor fd; | |
| 1642 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
| 1643 // should be found (if not, leave as is) | |
| 1644 if (found) { | |
| 1645 jint ival = value->i; | |
| 1646 // convert value from int to appropriate type | |
| 1647 switch (fd.field_type()) { | |
| 1648 case T_BOOLEAN: | |
| 1649 sig_type = 'Z'; | |
| 1650 value->i = 0; // clear it | |
| 1651 value->z = (jboolean)ival; | |
| 1652 break; | |
| 1653 case T_BYTE: | |
| 1654 sig_type = 'B'; | |
| 1655 value->i = 0; // clear it | |
| 1656 value->b = (jbyte)ival; | |
| 1657 break; | |
| 1658 case T_CHAR: | |
| 1659 sig_type = 'C'; | |
| 1660 value->i = 0; // clear it | |
| 1661 value->c = (jchar)ival; | |
| 1662 break; | |
| 1663 case T_SHORT: | |
| 1664 sig_type = 'S'; | |
| 1665 value->i = 0; // clear it | |
| 1666 value->s = (jshort)ival; | |
| 1667 break; | |
| 1668 case T_INT: | |
| 1669 // nothing to do | |
| 1670 break; | |
| 1671 default: | |
| 1672 // this is an integer instruction, should be one of above | |
| 1673 ShouldNotReachHere(); | |
| 1674 break; | |
| 1675 } | |
| 1676 } | |
| 1677 } | |
| 1678 | |
| 1679 // convert oop to JNI handle. | |
| 1680 if (sig_type == 'L' || sig_type == '[') { | |
| 1681 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); | |
| 1682 } | |
| 1683 | |
| 1684 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
| 1685 | |
| 1686 // Destroy the JNI handle allocated above. | |
| 1687 if (sig_type == 'L') { | |
| 1688 JNIHandles::destroy_local(value->l); | |
| 1689 } | |
| 1690 } | |
| 1691 | |
| 1692 void JvmtiExport::post_field_modification(JavaThread *thread, methodOop method, | |
| 1693 address location, KlassHandle field_klass, Handle object, jfieldID field, | |
| 1694 char sig_type, jvalue *value_ptr) { | |
| 1695 | |
| 1696 HandleMark hm(thread); | |
| 1697 methodHandle mh(thread, method); | |
| 1698 | |
| 1699 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1700 if (state == NULL) { | |
| 1701 return; | |
| 1702 } | |
| 1703 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
| 1704 ("JVMTI [%s] Trg Field Modification event triggered", | |
| 1705 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1706 | |
| 1707 JvmtiEnvThreadStateIterator it(state); | |
| 1708 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1709 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
| 1710 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
| 1711 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
| 1712 JvmtiTrace::safe_get_thread_name(thread), | |
| 1713 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1714 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1715 location - mh()->code_base() )); | |
| 1716 | |
| 1717 JvmtiEnv *env = ets->get_env(); | |
| 1718 JvmtiLocationEventMark jem(thread, mh, location); | |
| 1719 jclass field_jclass = jem.to_jclass(field_klass()); | |
| 1720 jobject field_jobject = jem.to_jobject(object()); | |
| 1721 JvmtiJavaThreadEventTransition jet(thread); | |
| 1722 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
| 1723 if (callback != NULL) { | |
| 1724 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1725 jem.jni_methodID(), jem.location(), | |
| 1726 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
| 1727 } | |
| 1728 } | |
| 1729 } | |
| 1730 } | |
| 1731 | |
| 1732 void JvmtiExport::post_native_method_bind(methodOop method, address* function_ptr) { | |
| 1733 JavaThread* thread = JavaThread::current(); | |
| 1734 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
| 1735 | |
| 1736 HandleMark hm(thread); | |
| 1737 methodHandle mh(thread, method); | |
| 1738 | |
| 1739 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
| 1740 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1741 | |
| 1742 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
| 1743 JvmtiEnvIterator it; | |
| 1744 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1745 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
| 1746 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
| 1747 JvmtiTrace::safe_get_thread_name(thread) )); | |
| 1748 | |
| 1749 JvmtiMethodEventMark jem(thread, mh); | |
| 1750 JvmtiJavaThreadEventTransition jet(thread); | |
| 1751 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
| 1752 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
| 1753 if (callback != NULL) { | |
| 1754 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
| 1755 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
| 1756 } | |
| 1757 } | |
| 1758 } | |
| 1759 } | |
| 1760 } | |
| 1761 | |
|
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1762 // Returns a record containing inlining information for the given nmethod |
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1763 jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
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1764 jint numstackframes = 0; |
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1765 jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
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1766 record->header.kind = JVMTI_CMLR_INLINE_INFO; |
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1767 record->header.next = NULL; |
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1768 record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
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1769 record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
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1770 record->numpcs = 0; |
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1771 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1772 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1773 record->numpcs++; |
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1774 } |
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1775 record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
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1776 int scope = 0; |
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1777 for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
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1778 if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
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1779 void* pc_address = (void*)p->real_pc(nm); |
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1780 assert(pc_address != NULL, "pc_address must be non-null"); |
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1781 record->pcinfo[scope].pc = pc_address; |
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1782 numstackframes=0; |
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1783 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1784 numstackframes++; |
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1785 } |
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1786 assert(numstackframes != 0, "numstackframes must be nonzero."); |
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1787 record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
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1788 record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
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1789 record->pcinfo[scope].numstackframes = numstackframes; |
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1790 int stackframe = 0; |
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1791 for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
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1792 // 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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1793 assert(!sd->method().is_null(), "sd->method() cannot be null."); |
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1794 record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
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1795 record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
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1796 stackframe++; |
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1797 } |
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1798 scope++; |
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1799 } |
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1800 return record; |
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1801 } |
| 0 | 1802 |
| 1803 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
| 1804 // If there are pending CompiledMethodUnload events then these are | |
| 1805 // posted before this CompiledMethodLoad event. We "lock" the nmethod and | |
| 1806 // maintain a handle to the methodOop to ensure that the nmethod isn't | |
| 1807 // flushed or unloaded while posting the events. | |
| 1808 JavaThread* thread = JavaThread::current(); | |
| 1809 if (have_pending_compiled_method_unload_events()) { | |
| 1810 methodHandle mh(thread, nm->method()); | |
| 1811 nmethodLocker nml(nm); | |
| 1812 post_pending_compiled_method_unload_events(); | |
| 1813 } | |
| 1814 | |
| 1815 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1816 ("JVMTI [%s] method compile load event triggered", | |
| 1817 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1818 | |
| 1819 JvmtiEnvIterator it; | |
| 1820 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1821 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
| 1822 | |
| 1823 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1824 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
| 1825 JvmtiTrace::safe_get_thread_name(thread), | |
| 1826 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
| 1827 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
| 1828 | |
| 1829 ResourceMark rm(thread); | |
|
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1830 |
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1831 // Add inlining information |
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1832 jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
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1833 // Pass inlining information through the void pointer |
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1834 JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
| 0 | 1835 JvmtiJavaThreadEventTransition jet(thread); |
| 1836 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
| 1837 if (callback != NULL) { | |
| 1838 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
| 1839 jem.code_size(), jem.code_data(), jem.map_length(), | |
| 1840 jem.map(), jem.compile_info()); | |
| 1841 } | |
| 1842 } | |
| 1843 } | |
| 1844 } | |
| 1845 | |
| 1846 | |
| 1847 // post a COMPILED_METHOD_LOAD event for a given environment | |
| 1848 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
| 1849 const void *code_begin, const jint map_length, | |
| 1850 const jvmtiAddrLocationMap* map) | |
| 1851 { | |
| 1852 JavaThread* thread = JavaThread::current(); | |
| 1853 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1854 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
| 1855 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1856 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
| 1857 | |
| 1858 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1859 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
| 1860 JvmtiTrace::safe_get_thread_name(thread), method)); | |
| 1861 | |
| 1862 JvmtiEventMark jem(thread); | |
| 1863 JvmtiJavaThreadEventTransition jet(thread); | |
| 1864 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
| 1865 if (callback != NULL) { | |
| 1866 (*callback)(env->jvmti_external(), method, | |
| 1867 length, code_begin, map_length, | |
| 1868 map, NULL); | |
| 1869 } | |
| 1870 } | |
| 1871 } | |
| 1872 | |
| 1873 // used at a safepoint to post a CompiledMethodUnload event | |
|
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1874 void JvmtiExport::post_compiled_method_unload(jmethodID mid, const void *code_begin) { |
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1875 if (SafepointSynchronize::is_at_safepoint()) { |
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1876 // Class unloading can cause nmethod unloading which is reported |
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1877 // by the VMThread. These must be batched to be processed later. |
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1878 if (_pending_compiled_method_unload_method_ids == NULL) { |
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1879 // create list lazily |
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1880 _pending_compiled_method_unload_method_ids = new (ResourceObj::C_HEAP) GrowableArray<jmethodID>(10,true); |
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1881 _pending_compiled_method_unload_code_begins = new (ResourceObj::C_HEAP) GrowableArray<const void *>(10,true); |
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1882 } |
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1883 _pending_compiled_method_unload_method_ids->append(mid); |
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1884 _pending_compiled_method_unload_code_begins->append(code_begin); |
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1885 _have_pending_compiled_method_unload_events = true; |
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1886 } else { |
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1887 // Unloading caused by the sweeper can be reported synchronously. |
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1888 if (have_pending_compiled_method_unload_events()) { |
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1889 post_pending_compiled_method_unload_events(); |
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1890 } |
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1891 post_compiled_method_unload_internal(JavaThread::current(), mid, code_begin); |
| 0 | 1892 } |
| 1893 } | |
| 1894 | |
| 1895 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
| 1896 JavaThread* thread = JavaThread::current(); | |
| 1897 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1898 ("JVMTI [%s] method dynamic code generated event triggered", | |
| 1899 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1900 JvmtiEnvIterator it; | |
| 1901 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1902 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
| 1903 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1904 ("JVMTI [%s] dynamic code generated event sent for %s", | |
| 1905 JvmtiTrace::safe_get_thread_name(thread), name)); | |
| 1906 JvmtiEventMark jem(thread); | |
| 1907 JvmtiJavaThreadEventTransition jet(thread); | |
| 1908 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
| 1909 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
| 1910 if (callback != NULL) { | |
| 1911 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
| 1912 } | |
| 1913 } | |
| 1914 } | |
| 1915 } | |
| 1916 | |
| 1917 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
| 1918 // In theory everyone coming thru here is in_vm but we need to be certain | |
| 1919 // because a callee will do a vm->native transition | |
| 1920 ThreadInVMfromUnknown __tiv; | |
| 1921 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
| 1922 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
| 1923 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
| 1924 return; | |
| 1925 } | |
| 1926 | |
| 1927 if (have_pending_compiled_method_unload_events()) { | |
| 1928 post_pending_compiled_method_unload_events(); | |
| 1929 } | |
| 1930 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
| 1931 } | |
| 1932 | |
| 1933 | |
| 1934 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
| 1935 // used by GenerateEvents | |
| 1936 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
| 1937 const void *code_begin, const void *code_end) | |
| 1938 { | |
| 1939 JavaThread* thread = JavaThread::current(); | |
| 1940 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1941 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
| 1942 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1943 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
| 1944 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1945 ("JVMTI [%s] dynamic code generated event sent for %s", | |
| 1946 JvmtiTrace::safe_get_thread_name(thread), name)); | |
| 1947 JvmtiEventMark jem(thread); | |
| 1948 JvmtiJavaThreadEventTransition jet(thread); | |
| 1949 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
| 1950 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
| 1951 if (callback != NULL) { | |
| 1952 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
| 1953 } | |
| 1954 } | |
| 1955 } | |
| 1956 | |
| 1957 // post a DynamicCodeGenerated event while holding locks in the VM. | |
| 1958 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
| 1959 address code_begin, address code_end) | |
| 1960 { | |
| 1961 // register the stub with the current dynamic code event collector | |
| 1962 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
|
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1963 // state can only be NULL if the current thread is exiting which |
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1964 // should not happen since we're trying to post an event |
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1965 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
| 0 | 1966 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
| 1967 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
| 1968 collector->register_stub(name, code_begin, code_end); | |
| 1969 } | |
| 1970 | |
| 1971 // Collect all the vm internally allocated objects which are visible to java world | |
| 1972 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
| 1973 Thread* thread = ThreadLocalStorage::thread(); | |
| 1974 if (thread != NULL && thread->is_Java_thread()) { | |
| 1975 // Can not take safepoint here. | |
| 1976 No_Safepoint_Verifier no_sfpt; | |
| 1977 // Can not take safepoint here so can not use state_for to get | |
| 1978 // jvmti thread state. | |
| 1979 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
| 1980 if (state != NULL ) { | |
| 1981 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
| 1982 JvmtiVMObjectAllocEventCollector *collector; | |
| 1983 collector = state->get_vm_object_alloc_event_collector(); | |
| 1984 if (collector != NULL && collector->is_enabled()) { | |
| 1985 // Don't record classes as these will be notified via the ClassLoad | |
| 1986 // event. | |
| 1142 | 1987 if (obj->klass() != SystemDictionary::Class_klass()) { |
| 0 | 1988 collector->record_allocation(obj); |
| 1989 } | |
| 1990 } | |
| 1991 } | |
| 1992 } | |
| 1993 } | |
| 1994 | |
| 1995 void JvmtiExport::post_garbage_collection_finish() { | |
| 1996 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
| 1997 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
| 1998 ("JVMTI [%s] garbage collection finish event triggered", | |
| 1999 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2000 JvmtiEnvIterator it; | |
| 2001 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 2002 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { | |
| 2003 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
| 2004 ("JVMTI [%s] garbage collection finish event sent ", | |
| 2005 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2006 JvmtiThreadEventTransition jet(thread); | |
| 2007 // JNIEnv is NULL here because this event is posted from VM Thread | |
| 2008 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
| 2009 if (callback != NULL) { | |
| 2010 (*callback)(env->jvmti_external()); | |
| 2011 } | |
| 2012 } | |
| 2013 } | |
| 2014 } | |
| 2015 | |
| 2016 void JvmtiExport::post_garbage_collection_start() { | |
| 2017 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
| 2018 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
| 2019 ("JVMTI [%s] garbage collection start event triggered", | |
| 2020 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2021 JvmtiEnvIterator it; | |
| 2022 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 2023 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
| 2024 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
| 2025 ("JVMTI [%s] garbage collection start event sent ", | |
| 2026 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2027 JvmtiThreadEventTransition jet(thread); | |
| 2028 // JNIEnv is NULL here because this event is posted from VM Thread | |
| 2029 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
| 2030 if (callback != NULL) { | |
| 2031 (*callback)(env->jvmti_external()); | |
| 2032 } | |
| 2033 } | |
| 2034 } | |
| 2035 } | |
| 2036 | |
| 2037 void JvmtiExport::post_data_dump() { | |
| 2038 Thread *thread = Thread::current(); | |
| 2039 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
| 2040 ("JVMTI [%s] data dump request event triggered", | |
| 2041 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2042 JvmtiEnvIterator it; | |
| 2043 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 2044 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
| 2045 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
| 2046 ("JVMTI [%s] data dump request event sent ", | |
| 2047 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2048 JvmtiThreadEventTransition jet(thread); | |
| 2049 // JNIEnv is NULL here because this event is posted from VM Thread | |
| 2050 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
| 2051 if (callback != NULL) { | |
| 2052 (*callback)(env->jvmti_external()); | |
| 2053 } | |
| 2054 } | |
| 2055 } | |
| 2056 } | |
| 2057 | |
| 2058 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
| 2059 oop object = (oop)obj_mntr->object(); | |
| 2060 if (!ServiceUtil::visible_oop(object)) { | |
| 2061 // Ignore monitor contended enter for vm internal object. | |
| 2062 return; | |
| 2063 } | |
| 2064 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2065 if (state == NULL) { | |
| 2066 return; | |
| 2067 } | |
| 2068 | |
| 2069 HandleMark hm(thread); | |
| 2070 Handle h(thread, object); | |
| 2071 | |
| 2072 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
| 2073 ("JVMTI [%s] montior contended enter event triggered", | |
| 2074 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2075 | |
| 2076 JvmtiEnvThreadStateIterator it(state); | |
| 2077 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2078 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
| 2079 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
| 2080 ("JVMTI [%s] monitor contended enter event sent", | |
| 2081 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2082 JvmtiMonitorEventMark jem(thread, h()); | |
| 2083 JvmtiEnv *env = ets->get_env(); | |
| 2084 JvmtiThreadEventTransition jet(thread); | |
| 2085 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
| 2086 if (callback != NULL) { | |
| 2087 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
| 2088 } | |
| 2089 } | |
| 2090 } | |
| 2091 } | |
| 2092 | |
| 2093 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
| 2094 oop object = (oop)obj_mntr->object(); | |
| 2095 if (!ServiceUtil::visible_oop(object)) { | |
| 2096 // Ignore monitor contended entered for vm internal object. | |
| 2097 return; | |
| 2098 } | |
| 2099 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2100 if (state == NULL) { | |
| 2101 return; | |
| 2102 } | |
| 2103 | |
| 2104 HandleMark hm(thread); | |
| 2105 Handle h(thread, object); | |
| 2106 | |
| 2107 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
| 2108 ("JVMTI [%s] montior contended entered event triggered", | |
| 2109 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2110 | |
| 2111 JvmtiEnvThreadStateIterator it(state); | |
| 2112 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2113 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
| 2114 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
| 2115 ("JVMTI [%s] monitor contended enter event sent", | |
| 2116 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2117 JvmtiMonitorEventMark jem(thread, h()); | |
| 2118 JvmtiEnv *env = ets->get_env(); | |
| 2119 JvmtiThreadEventTransition jet(thread); | |
| 2120 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
| 2121 if (callback != NULL) { | |
| 2122 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
| 2123 } | |
| 2124 } | |
| 2125 } | |
| 2126 } | |
| 2127 | |
| 2128 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
| 2129 jlong timeout) { | |
| 2130 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2131 if (state == NULL) { | |
| 2132 return; | |
| 2133 } | |
| 2134 | |
| 2135 HandleMark hm(thread); | |
| 2136 Handle h(thread, object); | |
| 2137 | |
| 2138 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
| 2139 ("JVMTI [%s] montior wait event triggered", | |
| 2140 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2141 | |
| 2142 JvmtiEnvThreadStateIterator it(state); | |
| 2143 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2144 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
| 2145 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
| 2146 ("JVMTI [%s] monitor wait event sent ", | |
| 2147 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2148 JvmtiMonitorEventMark jem(thread, h()); | |
| 2149 JvmtiEnv *env = ets->get_env(); | |
| 2150 JvmtiThreadEventTransition jet(thread); | |
| 2151 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
| 2152 if (callback != NULL) { | |
| 2153 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 2154 jem.jni_object(), timeout); | |
| 2155 } | |
| 2156 } | |
| 2157 } | |
| 2158 } | |
| 2159 | |
| 2160 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
| 2161 oop object = (oop)obj_mntr->object(); | |
| 2162 if (!ServiceUtil::visible_oop(object)) { | |
| 2163 // Ignore monitor waited for vm internal object. | |
| 2164 return; | |
| 2165 } | |
| 2166 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2167 if (state == NULL) { | |
| 2168 return; | |
| 2169 } | |
| 2170 | |
| 2171 HandleMark hm(thread); | |
| 2172 Handle h(thread, object); | |
| 2173 | |
| 2174 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
| 2175 ("JVMTI [%s] montior waited event triggered", | |
| 2176 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2177 | |
| 2178 JvmtiEnvThreadStateIterator it(state); | |
| 2179 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2180 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
| 2181 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
| 2182 ("JVMTI [%s] monitor waited event sent ", | |
| 2183 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2184 JvmtiMonitorEventMark jem(thread, h()); | |
| 2185 JvmtiEnv *env = ets->get_env(); | |
| 2186 JvmtiThreadEventTransition jet(thread); | |
| 2187 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
| 2188 if (callback != NULL) { | |
| 2189 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 2190 jem.jni_object(), timed_out); | |
| 2191 } | |
| 2192 } | |
| 2193 } | |
| 2194 } | |
| 2195 | |
| 2196 | |
| 2197 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
| 2198 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
| 2199 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2200 if (object == NULL) { | |
| 2201 return; | |
| 2202 } | |
| 2203 HandleMark hm(thread); | |
| 2204 Handle h(thread, object); | |
| 2205 JvmtiEnvIterator it; | |
| 2206 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 2207 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
| 2208 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
| 2209 JvmtiTrace::safe_get_thread_name(thread), | |
| 2210 object==NULL? "NULL" : Klass::cast(java_lang_Class::as_klassOop(object))->external_name())); | |
| 2211 | |
| 2212 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
| 2213 JvmtiJavaThreadEventTransition jet(thread); | |
| 2214 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
| 2215 if (callback != NULL) { | |
| 2216 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 2217 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
| 2218 } | |
| 2219 } | |
| 2220 } | |
| 2221 } | |
| 2222 | |
| 2223 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2224 | |
| 2225 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
| 2226 assert(JavaThread::current() == thread, "thread is not current"); | |
| 2227 | |
| 2228 | |
| 2229 // This has to happen after the thread state is removed, which is | |
| 2230 // why it is not in post_thread_end_event like its complement | |
| 2231 // Maybe both these functions should be rolled into the posts? | |
| 2232 JvmtiEventController::thread_ended(thread); | |
| 2233 } | |
| 2234 | |
| 2235 void JvmtiExport::oops_do(OopClosure* f) { | |
| 2236 JvmtiCurrentBreakpoints::oops_do(f); | |
| 2237 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
| 2238 } | |
| 2239 | |
| 2240 // Onload raw monitor transition. | |
| 2241 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
| 2242 JvmtiPendingMonitors::transition_raw_monitors(); | |
| 2243 } | |
| 2244 | |
| 2245 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2246 | |
| 2247 // type for the Agent_OnAttach entry point | |
| 2248 extern "C" { | |
| 2249 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
| 2250 } | |
| 2251 | |
| 2252 #ifndef SERVICES_KERNEL | |
| 2253 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
| 2254 char ebuf[1024]; | |
| 2255 char buffer[JVM_MAXPATHLEN]; | |
| 2256 void* library; | |
| 2257 jint result = JNI_ERR; | |
| 2258 | |
| 2259 // get agent name and options | |
| 2260 const char* agent = op->arg(0); | |
| 2261 const char* absParam = op->arg(1); | |
| 2262 const char* options = op->arg(2); | |
| 2263 | |
| 2264 // The abs paramter should be "true" or "false" | |
| 2265 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
| 2266 | |
| 2267 | |
| 2268 // If the path is absolute we attempt to load the library. Otherwise we try to | |
| 2269 // load it from the standard dll directory. | |
| 2270 | |
| 2271 if (is_absolute_path) { | |
| 2272 library = hpi::dll_load(agent, ebuf, sizeof ebuf); | |
| 2273 } else { | |
| 2274 // Try to load the agent from the standard dll directory | |
| 2275 hpi::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), agent); | |
| 2276 library = hpi::dll_load(buffer, ebuf, sizeof ebuf); | |
| 2277 if (library == NULL) { | |
| 2278 // not found - try local path | |
| 2279 char ns[1] = {0}; | |
| 2280 hpi::dll_build_name(buffer, sizeof(buffer), ns, agent); | |
| 2281 library = hpi::dll_load(buffer, ebuf, sizeof ebuf); | |
| 2282 } | |
| 2283 } | |
| 2284 | |
| 2285 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
| 2286 // function | |
| 2287 if (library != NULL) { | |
| 2288 | |
| 2289 // Lookup the Agent_OnAttach function | |
| 2290 OnAttachEntry_t on_attach_entry = NULL; | |
| 2291 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; | |
| 2292 for (uint symbol_index = 0; symbol_index < ARRAY_SIZE(on_attach_symbols); symbol_index++) { | |
| 2293 on_attach_entry = | |
| 2294 CAST_TO_FN_PTR(OnAttachEntry_t, hpi::dll_lookup(library, on_attach_symbols[symbol_index])); | |
| 2295 if (on_attach_entry != NULL) break; | |
| 2296 } | |
| 2297 | |
| 2298 if (on_attach_entry == NULL) { | |
| 2299 // Agent_OnAttach missing - unload library | |
| 2300 hpi::dll_unload(library); | |
| 2301 } else { | |
| 2302 // Invoke the Agent_OnAttach function | |
| 2303 JavaThread* THREAD = JavaThread::current(); | |
| 2304 { | |
| 2305 extern struct JavaVM_ main_vm; | |
| 2306 JvmtiThreadEventMark jem(THREAD); | |
| 2307 JvmtiJavaThreadEventTransition jet(THREAD); | |
| 2308 | |
| 2309 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
| 2310 } | |
| 2311 | |
| 2312 // Agent_OnAttach may have used JNI | |
| 2313 if (HAS_PENDING_EXCEPTION) { | |
| 2314 CLEAR_PENDING_EXCEPTION; | |
| 2315 } | |
| 2316 | |
| 2317 // If OnAttach returns JNI_OK then we add it to the list of | |
| 2318 // agent libraries so that we can call Agent_OnUnload later. | |
| 2319 if (result == JNI_OK) { | |
| 2320 Arguments::add_loaded_agent(agent, (char*)options, is_absolute_path, library); | |
| 2321 } | |
| 2322 | |
| 2323 // Agent_OnAttach executed so completion status is JNI_OK | |
| 2324 st->print_cr("%d", result); | |
| 2325 result = JNI_OK; | |
| 2326 } | |
| 2327 } | |
| 2328 return result; | |
| 2329 } | |
| 2330 #endif // SERVICES_KERNEL | |
| 2331 | |
| 2332 // CMS has completed referencing processing so may need to update | |
| 2333 // tag maps. | |
| 2334 void JvmtiExport::cms_ref_processing_epilogue() { | |
| 2335 if (JvmtiEnv::environments_might_exist()) { | |
| 2336 JvmtiTagMap::cms_ref_processing_epilogue(); | |
| 2337 } | |
| 2338 } | |
| 2339 | |
| 2340 | |
| 2341 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2342 | |
| 2343 // Setup current current thread for event collection. | |
| 2344 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
| 2345 // set this event collector to be the current one. | |
| 2346 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
|
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2347 // state can only be NULL if the current thread is exiting which |
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2348 // should not happen since we're trying to configure for event collection |
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2349 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
| 0 | 2350 if (is_vm_object_alloc_event()) { |
| 2351 _prev = state->get_vm_object_alloc_event_collector(); | |
| 2352 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
| 2353 } else if (is_dynamic_code_event()) { | |
| 2354 _prev = state->get_dynamic_code_event_collector(); | |
| 2355 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
| 2356 } | |
| 2357 } | |
| 2358 | |
| 2359 // Unset current event collection in this thread and reset it with previous | |
| 2360 // collector. | |
| 2361 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
| 2362 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
| 2363 if (state != NULL) { | |
| 2364 // restore the previous event collector (if any) | |
| 2365 if (is_vm_object_alloc_event()) { | |
| 2366 if (state->get_vm_object_alloc_event_collector() == this) { | |
| 2367 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
| 2368 } else { | |
| 2369 // this thread's jvmti state was created during the scope of | |
| 2370 // the event collector. | |
| 2371 } | |
| 2372 } else { | |
| 2373 if (is_dynamic_code_event()) { | |
| 2374 if (state->get_dynamic_code_event_collector() == this) { | |
| 2375 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
| 2376 } else { | |
| 2377 // this thread's jvmti state was created during the scope of | |
| 2378 // the event collector. | |
| 2379 } | |
| 2380 } | |
| 2381 } | |
| 2382 } | |
| 2383 } | |
| 2384 | |
| 2385 // create the dynamic code event collector | |
| 2386 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
| 2387 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 2388 setup_jvmti_thread_state(); | |
| 2389 } | |
| 2390 } | |
| 2391 | |
| 2392 // iterate over any code blob descriptors collected and post a | |
| 2393 // DYNAMIC_CODE_GENERATED event to the profiler. | |
| 2394 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
| 2395 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
| 2396 // iterate over any code blob descriptors that we collected | |
| 2397 if (_code_blobs != NULL) { | |
| 2398 for (int i=0; i<_code_blobs->length(); i++) { | |
| 2399 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
| 2400 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
| 2401 FreeHeap(blob); | |
| 2402 } | |
| 2403 delete _code_blobs; | |
| 2404 } | |
| 2405 unset_jvmti_thread_state(); | |
| 2406 } | |
| 2407 | |
| 2408 // register a stub | |
| 2409 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
| 2410 if (_code_blobs == NULL) { | |
| 2411 _code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(1,true); | |
| 2412 } | |
| 2413 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
| 2414 } | |
| 2415 | |
| 2416 // Setup current thread to record vm allocated objects. | |
| 2417 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
| 2418 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 2419 _enable = true; | |
| 2420 setup_jvmti_thread_state(); | |
| 2421 } else { | |
| 2422 _enable = false; | |
| 2423 } | |
| 2424 } | |
| 2425 | |
| 2426 // Post vm_object_alloc event for vm allocated objects visible to java | |
| 2427 // world. | |
| 2428 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
| 2429 if (_allocated != NULL) { | |
| 2430 set_enabled(false); | |
| 2431 for (int i = 0; i < _allocated->length(); i++) { | |
| 2432 oop obj = _allocated->at(i); | |
| 2433 if (ServiceUtil::visible_oop(obj)) { | |
| 2434 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
| 2435 } | |
| 2436 } | |
| 2437 delete _allocated; | |
| 2438 } | |
| 2439 unset_jvmti_thread_state(); | |
| 2440 } | |
| 2441 | |
| 2442 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
| 2443 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
| 2444 if (_allocated == NULL) { | |
| 2445 _allocated = new (ResourceObj::C_HEAP) GrowableArray<oop>(1, true); | |
| 2446 } | |
| 2447 _allocated->push(obj); | |
| 2448 } | |
| 2449 | |
| 2450 // GC support. | |
| 2451 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
| 2452 if (_allocated != NULL) { | |
| 2453 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
| 2454 if (_allocated->at(i) != NULL) { | |
| 2455 f->do_oop(_allocated->adr_at(i)); | |
| 2456 } | |
| 2457 } | |
| 2458 } | |
| 2459 } | |
| 2460 | |
| 2461 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
| 2462 // no-op if jvmti not enabled | |
| 2463 if (!JvmtiEnv::environments_might_exist()) { | |
| 2464 return; | |
| 2465 } | |
| 2466 | |
| 2467 // Runs at safepoint. So no need to acquire Threads_lock. | |
| 2468 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
| 2469 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
| 2470 if (state != NULL) { | |
| 2471 JvmtiVMObjectAllocEventCollector *collector; | |
| 2472 collector = state->get_vm_object_alloc_event_collector(); | |
| 2473 while (collector != NULL) { | |
| 2474 collector->oops_do(f); | |
| 2475 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
| 2476 } | |
| 2477 } | |
| 2478 } | |
| 2479 } | |
| 2480 | |
| 2481 | |
| 2482 // Disable collection of VMObjectAlloc events | |
| 2483 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
| 2484 // a no-op if VMObjectAlloc event is not enabled | |
| 2485 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
| 2486 return; | |
| 2487 } | |
| 2488 Thread* thread = ThreadLocalStorage::thread(); | |
| 2489 if (thread != NULL && thread->is_Java_thread()) { | |
| 2490 JavaThread* current_thread = (JavaThread*)thread; | |
| 2491 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
| 2492 if (state != NULL) { | |
| 2493 JvmtiVMObjectAllocEventCollector *collector; | |
| 2494 collector = state->get_vm_object_alloc_event_collector(); | |
| 2495 if (collector != NULL && collector->is_enabled()) { | |
| 2496 _collector = collector; | |
| 2497 _collector->set_enabled(false); | |
| 2498 } | |
| 2499 } | |
| 2500 } | |
| 2501 } | |
| 2502 | |
| 2503 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
| 2504 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
| 2505 if (was_enabled()) { | |
| 2506 _collector->set_enabled(true); | |
| 2507 } | |
| 2508 }; | |
| 2509 | |
| 2510 JvmtiGCMarker::JvmtiGCMarker(bool full) : _full(full), _invocation_count(0) { | |
| 2511 assert(Thread::current()->is_VM_thread(), "wrong thread"); | |
| 2512 | |
| 2513 // if there aren't any JVMTI environments then nothing to do | |
| 2514 if (!JvmtiEnv::environments_might_exist()) { | |
| 2515 return; | |
| 2516 } | |
| 2517 | |
|
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2518 if (ForceFullGCJVMTIEpilogues) { |
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2519 // force 'Full GC' was done semantics for JVMTI GC epilogues |
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2520 _full = true; |
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2521 } |
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2522 |
| 0 | 2523 // GarbageCollectionStart event posted from VM thread - okay because |
| 2524 // JVMTI is clear that the "world is stopped" and callback shouldn't | |
| 2525 // try to call into the VM. | |
| 2526 if (JvmtiExport::should_post_garbage_collection_start()) { | |
| 2527 JvmtiExport::post_garbage_collection_start(); | |
| 2528 } | |
| 2529 | |
| 2530 // if "full" is false it probably means this is a scavenge of the young | |
| 2531 // generation. However it could turn out that a "full" GC is required | |
| 2532 // so we record the number of collections so that it can be checked in | |
| 2533 // the destructor. | |
| 2534 if (!_full) { | |
| 342 | 2535 _invocation_count = Universe::heap()->total_full_collections(); |
| 0 | 2536 } |
| 2537 | |
| 2538 // Do clean up tasks that need to be done at a safepoint | |
| 2539 JvmtiEnvBase::check_for_periodic_clean_up(); | |
| 2540 } | |
| 2541 | |
| 2542 JvmtiGCMarker::~JvmtiGCMarker() { | |
| 2543 // if there aren't any JVMTI environments then nothing to do | |
| 2544 if (!JvmtiEnv::environments_might_exist()) { | |
| 2545 return; | |
| 2546 } | |
| 2547 | |
| 2548 // JVMTI notify gc finish | |
| 2549 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
| 2550 JvmtiExport::post_garbage_collection_finish(); | |
| 2551 } | |
| 2552 | |
| 2553 // we might have initially started out doing a scavenge of the young | |
| 2554 // generation but could have ended up doing a "full" GC - check the | |
| 2555 // GC count to see. | |
| 2556 if (!_full) { | |
| 342 | 2557 _full = (_invocation_count != Universe::heap()->total_full_collections()); |
| 0 | 2558 } |
| 2559 | |
| 2560 // Full collection probably means the perm generation has been GC'ed | |
| 2561 // so we clear the breakpoint cache. | |
| 2562 if (_full) { | |
| 2563 JvmtiCurrentBreakpoints::gc_epilogue(); | |
| 2564 } | |
| 2565 | |
| 2566 // Notify heap/object tagging support | |
| 2567 JvmtiTagMap::gc_epilogue(_full); | |
| 2568 } | |
| 2569 #endif // JVMTI_KERNEL |