Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiExport.cpp @ 609:ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
Summary: Check for NULL return values from jvmti_thread_state() and state_for() and return a JVM TI error code as appropriate.
Reviewed-by: coleenp, swamyv
| author | dcubed |
|---|---|
| date | Mon, 02 Mar 2009 14:00:23 -0700 |
| parents | 37f87013dfd8 |
| children | 16c930df1e9b |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 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_examine_or_deopt_anywhere = false; | |
| 274 bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; | |
| 275 bool JvmtiExport::_can_modify_any_class = false; | |
| 276 bool JvmtiExport::_can_walk_any_space = false; | |
| 277 | |
| 278 bool JvmtiExport::_has_redefined_a_class = false; | |
| 279 bool JvmtiExport::_all_dependencies_are_recorded = false; | |
| 280 | |
| 281 // | |
| 282 // field access management | |
| 283 // | |
| 284 | |
| 285 // interpreter generator needs the address of the counter | |
| 286 address JvmtiExport::get_field_access_count_addr() { | |
| 287 // We don't grab a lock because we don't want to | |
| 288 // serialize field access between all threads. This means that a | |
| 289 // thread on another processor can see the wrong count value and | |
| 290 // may either miss making a needed call into post_field_access() | |
| 291 // or will make an unneeded call into post_field_access(). We pay | |
| 292 // this price to avoid slowing down the VM when we aren't watching | |
| 293 // field accesses. | |
| 294 // Other access/mutation safe by virtue of being in VM state. | |
| 295 return (address)(&_field_access_count); | |
| 296 } | |
| 297 | |
| 298 // | |
| 299 // field modification management | |
| 300 // | |
| 301 | |
| 302 // interpreter generator needs the address of the counter | |
| 303 address JvmtiExport::get_field_modification_count_addr() { | |
| 304 // We don't grab a lock because we don't | |
| 305 // want to serialize field modification between all threads. This | |
| 306 // means that a thread on another processor can see the wrong | |
| 307 // count value and may either miss making a needed call into | |
| 308 // post_field_modification() or will make an unneeded call into | |
| 309 // post_field_modification(). We pay this price to avoid slowing | |
| 310 // down the VM when we aren't watching field modifications. | |
| 311 // Other access/mutation safe by virtue of being in VM state. | |
| 312 return (address)(&_field_modification_count); | |
| 313 } | |
| 314 | |
| 315 | |
| 316 /////////////////////////////////////////////////////////////// | |
| 317 // Functions needed by java.lang.instrument for starting up javaagent. | |
| 318 /////////////////////////////////////////////////////////////// | |
| 319 | |
| 320 jint | |
| 321 JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { | |
| 322 /* To Do: add version checks */ | |
| 323 | |
| 324 if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { | |
| 325 JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); | |
| 326 // transition code: native to VM | |
| 327 ThreadInVMfromNative __tiv(current_thread); | |
| 328 __ENTRY(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) | |
| 329 debug_only(VMNativeEntryWrapper __vew;) | |
| 330 | |
| 331 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(); | |
| 332 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* | |
| 333 return JNI_OK; | |
| 334 | |
| 335 } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { | |
| 336 // not live, no thread to transition | |
| 337 JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(); | |
| 338 *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* | |
| 339 return JNI_OK; | |
| 340 | |
| 341 } else { | |
| 342 // Called at the wrong time | |
| 343 *penv = NULL; | |
| 344 return JNI_EDETACHED; | |
| 345 } | |
| 346 } | |
| 347 | |
| 348 void JvmtiExport::enter_primordial_phase() { | |
| 349 JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); | |
| 350 } | |
| 351 | |
| 352 void JvmtiExport::enter_start_phase() { | |
| 353 JvmtiManageCapabilities::recompute_always_capabilities(); | |
| 354 JvmtiEnvBase::set_phase(JVMTI_PHASE_START); | |
| 355 } | |
| 356 | |
| 357 void JvmtiExport::enter_onload_phase() { | |
| 358 JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); | |
| 359 } | |
| 360 | |
| 361 void JvmtiExport::enter_live_phase() { | |
| 362 JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); | |
| 363 } | |
| 364 | |
| 365 // | |
| 366 // JVMTI events that the VM posts to the debugger and also startup agent | |
| 367 // and call the agent's premain() for java.lang.instrument. | |
| 368 // | |
| 369 | |
| 370 void JvmtiExport::post_vm_start() { | |
| 371 EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); | |
| 372 | |
| 373 // can now enable some events | |
| 374 JvmtiEventController::vm_start(); | |
| 375 | |
| 376 JvmtiEnvIterator it; | |
| 377 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 378 if (env->is_enabled(JVMTI_EVENT_VM_START)) { | |
| 379 EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); | |
| 380 | |
| 381 JavaThread *thread = JavaThread::current(); | |
| 382 JvmtiThreadEventMark jem(thread); | |
| 383 JvmtiJavaThreadEventTransition jet(thread); | |
| 384 jvmtiEventVMStart callback = env->callbacks()->VMStart; | |
| 385 if (callback != NULL) { | |
| 386 (*callback)(env->jvmti_external(), jem.jni_env()); | |
| 387 } | |
| 388 } | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 | |
| 393 void JvmtiExport::post_vm_initialized() { | |
| 394 EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); | |
| 395 | |
| 396 // can now enable events | |
| 397 JvmtiEventController::vm_init(); | |
| 398 | |
| 399 JvmtiEnvIterator it; | |
| 400 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 401 if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { | |
| 402 EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); | |
| 403 | |
| 404 JavaThread *thread = JavaThread::current(); | |
| 405 JvmtiThreadEventMark jem(thread); | |
| 406 JvmtiJavaThreadEventTransition jet(thread); | |
| 407 jvmtiEventVMInit callback = env->callbacks()->VMInit; | |
| 408 if (callback != NULL) { | |
| 409 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
| 410 } | |
| 411 } | |
| 412 } | |
| 413 } | |
| 414 | |
| 415 | |
| 416 void JvmtiExport::post_vm_death() { | |
| 417 EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); | |
| 418 | |
| 419 JvmtiEnvIterator it; | |
| 420 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 421 if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { | |
| 422 EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); | |
| 423 | |
| 424 JavaThread *thread = JavaThread::current(); | |
| 425 JvmtiEventMark jem(thread); | |
| 426 JvmtiJavaThreadEventTransition jet(thread); | |
| 427 jvmtiEventVMDeath callback = env->callbacks()->VMDeath; | |
| 428 if (callback != NULL) { | |
| 429 (*callback)(env->jvmti_external(), jem.jni_env()); | |
| 430 } | |
| 431 } | |
| 432 } | |
| 433 | |
| 434 JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); | |
| 435 JvmtiEventController::vm_death(); | |
| 436 } | |
| 437 | |
| 438 char** | |
| 439 JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { | |
| 440 // Have to grab JVMTI thread state lock to be sure environment doesn't | |
| 441 // go away while we iterate them. No locks during VM bring-up. | |
| 442 if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { | |
| 443 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
| 444 } else { | |
| 445 MutexLocker mu(JvmtiThreadState_lock); | |
| 446 return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); | |
| 447 } | |
| 448 } | |
| 449 | |
| 450 class JvmtiClassFileLoadHookPoster : public StackObj { | |
| 451 private: | |
| 452 symbolHandle _h_name; | |
| 453 Handle _class_loader; | |
| 454 Handle _h_protection_domain; | |
| 455 unsigned char ** _data_ptr; | |
| 456 unsigned char ** _end_ptr; | |
| 457 JavaThread * _thread; | |
| 458 jint _curr_len; | |
| 459 unsigned char * _curr_data; | |
| 460 JvmtiEnv * _curr_env; | |
| 461 jint * _cached_length_ptr; | |
| 462 unsigned char ** _cached_data_ptr; | |
| 463 JvmtiThreadState * _state; | |
| 464 KlassHandle * _h_class_being_redefined; | |
| 465 JvmtiClassLoadKind _load_kind; | |
| 466 | |
| 467 public: | |
| 468 inline JvmtiClassFileLoadHookPoster(symbolHandle h_name, Handle class_loader, | |
| 469 Handle h_protection_domain, | |
| 470 unsigned char **data_ptr, unsigned char **end_ptr, | |
| 471 unsigned char **cached_data_ptr, | |
| 472 jint *cached_length_ptr) { | |
| 473 _h_name = h_name; | |
| 474 _class_loader = class_loader; | |
| 475 _h_protection_domain = h_protection_domain; | |
| 476 _data_ptr = data_ptr; | |
| 477 _end_ptr = end_ptr; | |
| 478 _thread = JavaThread::current(); | |
| 479 _curr_len = *end_ptr - *data_ptr; | |
| 480 _curr_data = *data_ptr; | |
| 481 _curr_env = NULL; | |
| 482 _cached_length_ptr = cached_length_ptr; | |
| 483 _cached_data_ptr = cached_data_ptr; | |
| 484 *_cached_length_ptr = 0; | |
| 485 *_cached_data_ptr = NULL; | |
| 486 | |
| 487 _state = _thread->jvmti_thread_state(); | |
| 488 if (_state != NULL) { | |
| 489 _h_class_being_redefined = _state->get_class_being_redefined(); | |
| 490 _load_kind = _state->get_class_load_kind(); | |
| 491 // Clear class_being_redefined flag here. The action | |
| 492 // from agent handler could generate a new class file load | |
| 493 // hook event and if it is not cleared the new event generated | |
| 494 // from regular class file load could have this stale redefined | |
| 495 // class handle info. | |
| 496 _state->clear_class_being_redefined(); | |
| 497 } else { | |
| 498 // redefine and retransform will always set the thread state | |
| 499 _h_class_being_redefined = (KlassHandle *) NULL; | |
| 500 _load_kind = jvmti_class_load_kind_load; | |
| 501 } | |
| 502 } | |
| 503 | |
| 504 void post() { | |
| 505 // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
| 506 // ("JVMTI [%s] class file load hook event triggered", | |
| 507 // JvmtiTrace::safe_get_thread_name(_thread))); | |
| 508 post_all_envs(); | |
| 509 copy_modified_data(); | |
| 510 } | |
| 511 | |
| 512 private: | |
| 513 void post_all_envs() { | |
| 514 if (_load_kind != jvmti_class_load_kind_retransform) { | |
| 515 // for class load and redefine, | |
| 516 // call the non-retransformable agents | |
| 517 JvmtiEnvIterator it; | |
| 518 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 519 if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
| 520 // non-retransformable agents cannot retransform back, | |
| 521 // so no need to cache the original class file bytes | |
| 522 post_to_env(env, false); | |
| 523 } | |
| 524 } | |
| 525 } | |
| 526 JvmtiEnvIterator it; | |
| 527 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 528 // retransformable agents get all events | |
| 529 if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { | |
| 530 // retransformable agents need to cache the original class file | |
| 531 // bytes if changes are made via the ClassFileLoadHook | |
| 532 post_to_env(env, true); | |
| 533 } | |
| 534 } | |
| 535 } | |
| 536 | |
| 537 void post_to_env(JvmtiEnv* env, bool caching_needed) { | |
| 538 unsigned char *new_data = NULL; | |
| 539 jint new_len = 0; | |
| 540 // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, | |
| 541 // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", | |
| 542 // JvmtiTrace::safe_get_thread_name(_thread), | |
| 543 // _h_name.is_null() ? "NULL" : _h_name->as_utf8(), | |
| 544 // _curr_data, _curr_len )); | |
| 545 JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, | |
| 546 _h_protection_domain, | |
| 547 _h_class_being_redefined); | |
| 548 JvmtiJavaThreadEventTransition jet(_thread); | |
| 549 JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? | |
| 550 NULL : jem.jni_env(); | |
| 551 jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; | |
| 552 if (callback != NULL) { | |
| 553 (*callback)(env->jvmti_external(), jni_env, | |
| 554 jem.class_being_redefined(), | |
| 555 jem.jloader(), jem.class_name(), | |
| 556 jem.protection_domain(), | |
| 557 _curr_len, _curr_data, | |
| 558 &new_len, &new_data); | |
| 559 } | |
| 560 if (new_data != NULL) { | |
| 561 // this agent has modified class data. | |
| 562 if (caching_needed && *_cached_data_ptr == NULL) { | |
| 563 // data has been changed by the new retransformable agent | |
| 564 // and it hasn't already been cached, cache it | |
| 565 *_cached_data_ptr = (unsigned char *)os::malloc(_curr_len); | |
| 566 memcpy(*_cached_data_ptr, _curr_data, _curr_len); | |
| 567 *_cached_length_ptr = _curr_len; | |
| 568 } | |
| 569 | |
| 570 if (_curr_data != *_data_ptr) { | |
| 571 // curr_data is previous agent modified class data. | |
| 572 // And this has been changed by the new agent so | |
| 573 // we can delete it now. | |
| 574 _curr_env->Deallocate(_curr_data); | |
| 575 } | |
| 576 | |
| 577 // Class file data has changed by the current agent. | |
| 578 _curr_data = new_data; | |
| 579 _curr_len = new_len; | |
| 580 // Save the current agent env we need this to deallocate the | |
| 581 // memory allocated by this agent. | |
| 582 _curr_env = env; | |
| 583 } | |
| 584 } | |
| 585 | |
| 586 void copy_modified_data() { | |
| 587 // if one of the agent has modified class file data. | |
| 588 // Copy modified class data to new resources array. | |
| 589 if (_curr_data != *_data_ptr) { | |
| 590 *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); | |
| 591 memcpy(*_data_ptr, _curr_data, _curr_len); | |
| 592 *_end_ptr = *_data_ptr + _curr_len; | |
| 593 _curr_env->Deallocate(_curr_data); | |
| 594 } | |
| 595 } | |
| 596 }; | |
| 597 | |
| 598 bool JvmtiExport::_should_post_class_file_load_hook = false; | |
| 599 | |
| 600 // this entry is for class file load hook on class load, redefine and retransform | |
| 601 void JvmtiExport::post_class_file_load_hook(symbolHandle h_name, | |
| 602 Handle class_loader, | |
| 603 Handle h_protection_domain, | |
| 604 unsigned char **data_ptr, | |
| 605 unsigned char **end_ptr, | |
| 606 unsigned char **cached_data_ptr, | |
| 607 jint *cached_length_ptr) { | |
| 608 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, | |
| 609 h_protection_domain, | |
| 610 data_ptr, end_ptr, | |
| 611 cached_data_ptr, | |
| 612 cached_length_ptr); | |
| 613 poster.post(); | |
| 614 } | |
| 615 | |
| 616 void JvmtiExport::report_unsupported(bool on) { | |
| 617 // If any JVMTI service is turned on, we need to exit before native code | |
| 618 // tries to access nonexistant services. | |
| 619 if (on) { | |
| 620 vm_exit_during_initialization("Java Kernel does not support JVMTI."); | |
| 621 } | |
| 622 } | |
| 623 | |
| 624 | |
| 625 #ifndef JVMTI_KERNEL | |
| 626 static inline klassOop oop_to_klassOop(oop obj) { | |
| 627 klassOop k = obj->klass(); | |
| 628 | |
| 629 // if the object is a java.lang.Class then return the java mirror | |
| 630 if (k == SystemDictionary::class_klass()) { | |
| 631 if (!java_lang_Class::is_primitive(obj)) { | |
| 632 k = java_lang_Class::as_klassOop(obj); | |
| 633 assert(k != NULL, "class for non-primitive mirror must exist"); | |
| 634 } | |
| 635 } | |
| 636 return k; | |
| 637 } | |
| 638 | |
| 639 class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { | |
| 640 private: | |
| 641 jobject _jobj; | |
| 642 jlong _size; | |
| 643 public: | |
| 644 JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klassOop(obj)) { | |
| 645 _jobj = (jobject)to_jobject(obj); | |
| 646 _size = obj->size() * wordSize; | |
| 647 }; | |
| 648 jobject jni_jobject() { return _jobj; } | |
| 649 jlong size() { return _size; } | |
| 650 }; | |
| 651 | |
| 652 class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { | |
| 653 private: | |
| 654 jint _code_size; | |
| 655 const void *_code_data; | |
| 656 jint _map_length; | |
| 657 jvmtiAddrLocationMap *_map; | |
| 658 const void *_compile_info; | |
| 659 public: | |
| 660 JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm) | |
| 661 : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { | |
| 662 _code_data = nm->code_begin(); | |
| 663 _code_size = nm->code_size(); | |
| 664 _compile_info = NULL; /* no info for our VM. */ | |
| 665 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); | |
| 666 } | |
| 667 ~JvmtiCompiledMethodLoadEventMark() { | |
| 668 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map); | |
| 669 } | |
| 670 | |
| 671 jint code_size() { return _code_size; } | |
| 672 const void *code_data() { return _code_data; } | |
| 673 jint map_length() { return _map_length; } | |
| 674 const jvmtiAddrLocationMap* map() { return _map; } | |
| 675 const void *compile_info() { return _compile_info; } | |
| 676 }; | |
| 677 | |
| 678 | |
| 679 | |
| 680 class JvmtiMonitorEventMark : public JvmtiThreadEventMark { | |
| 681 private: | |
| 682 jobject _jobj; | |
| 683 public: | |
| 684 JvmtiMonitorEventMark(JavaThread *thread, oop object) | |
| 685 : JvmtiThreadEventMark(thread){ | |
| 686 _jobj = to_jobject(object); | |
| 687 } | |
| 688 jobject jni_object() { return _jobj; } | |
| 689 }; | |
| 690 | |
| 691 /////////////////////////////////////////////////////////////// | |
| 692 // | |
| 693 // pending CompiledMethodUnload support | |
| 694 // | |
| 695 | |
| 696 bool JvmtiExport::_have_pending_compiled_method_unload_events; | |
| 697 GrowableArray<jmethodID>* JvmtiExport::_pending_compiled_method_unload_method_ids; | |
| 698 GrowableArray<const void *>* JvmtiExport::_pending_compiled_method_unload_code_begins; | |
| 699 JavaThread* JvmtiExport::_current_poster; | |
| 700 | |
| 701 // post any pending CompiledMethodUnload events | |
| 702 | |
| 703 void JvmtiExport::post_pending_compiled_method_unload_events() { | |
| 704 JavaThread* self = JavaThread::current(); | |
| 705 assert(!self->owns_locks(), "can't hold locks"); | |
| 706 | |
| 707 // Indicates if this is the first activiation of this function. | |
| 708 // In theory the profiler's callback could call back into VM and provoke | |
| 709 // another CompiledMethodLoad event to be posted from this thread. As the | |
| 710 // stack rewinds we need to ensure that the original activation does the | |
| 711 // completion and notifies any waiters. | |
| 712 bool first_activation = false; | |
| 713 | |
| 714 // the jmethodID (may not be valid) to be used for a single event | |
| 715 jmethodID method; | |
| 716 const void *code_begin; | |
| 717 | |
| 718 // grab the monitor and check if another thread is already posting | |
| 719 // events. If there is another thread posting events then we wait | |
| 720 // until it completes. (In theory we could check the pending events to | |
| 721 // see if any of the addresses overlap with the event that we want to | |
| 722 // post but as it will happen so rarely we just block any thread waiting | |
| 723 // to post a CompiledMethodLoad or DynamicCodeGenerated event until all | |
| 724 // pending CompiledMethodUnload events have been posted). | |
| 725 // | |
| 726 // If another thread isn't posting we examine the list of pending jmethodIDs. | |
| 727 // If the list is empty then we are done. If it's not empty then this thread | |
| 728 // (self) becomes the pending event poster and we remove the top (last) | |
| 729 // event from the list. Note that this means we remove the newest event first | |
| 730 // but as they are all CompiledMethodUnload events the order doesn't matter. | |
| 731 // Once we have removed a jmethodID then we exit the monitor. Any other thread | |
| 732 // wanting to post a CompiledMethodLoad or DynamicCodeGenerated event will | |
| 733 // be forced to wait on the monitor. | |
| 734 { | |
| 735 MutexLocker mu(JvmtiPendingEvent_lock); | |
| 736 if (_current_poster != self) { | |
| 737 while (_current_poster != NULL) { | |
| 738 JvmtiPendingEvent_lock->wait(); | |
| 739 } | |
| 740 } | |
| 741 if ((_pending_compiled_method_unload_method_ids == NULL) || | |
| 742 (_pending_compiled_method_unload_method_ids->length() == 0)) { | |
| 743 return; | |
| 744 } | |
| 745 if (_current_poster == NULL) { | |
| 746 _current_poster = self; | |
| 747 first_activation = true; | |
| 748 } else { | |
| 749 // re-entrant | |
| 750 guarantee(_current_poster == self, "checking"); | |
| 751 } | |
| 752 method = _pending_compiled_method_unload_method_ids->pop(); | |
| 753 code_begin = _pending_compiled_method_unload_code_begins->pop(); | |
| 754 } | |
| 755 | |
| 756 // This thread is the pending event poster so it first posts the CompiledMethodUnload | |
| 757 // event for the jmethodID that has been removed from the list. Once posted it | |
| 758 // re-grabs the monitor and checks the list again. If the list is empty then and this | |
| 759 // is the first activation of the function then we reset the _have_pending_events | |
| 760 // flag, cleanup _current_poster to indicate that no thread is now servicing the | |
| 761 // pending events list, and finally notify any thread that might be waiting. | |
| 762 for (;;) { | |
| 763 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, | |
| 764 ("JVMTI [%s] method compile unload event triggered", | |
| 765 JvmtiTrace::safe_get_thread_name(self))); | |
| 766 | |
| 767 // post the event for each environment that has this event enabled. | |
| 768 JvmtiEnvIterator it; | |
| 769 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 770 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { | |
| 771 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, | |
| 772 ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, | |
| 773 JvmtiTrace::safe_get_thread_name(self), method)); | |
| 774 | |
| 775 JvmtiEventMark jem(self); | |
| 776 JvmtiJavaThreadEventTransition jet(self); | |
| 777 jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; | |
| 778 if (callback != NULL) { | |
| 779 (*callback)(env->jvmti_external(), method, code_begin); | |
| 780 } | |
| 781 } | |
| 782 } | |
| 783 | |
| 784 // event posted, now re-grab monitor and get the next event | |
| 785 // If there's no next event then we are done. If this is the first | |
| 786 // activiation of this function by this thread notify any waiters | |
| 787 // so that they can post. | |
| 788 { | |
| 789 MutexLocker ml(JvmtiPendingEvent_lock); | |
| 790 if (_pending_compiled_method_unload_method_ids->length() == 0) { | |
| 791 if (first_activation) { | |
| 792 _have_pending_compiled_method_unload_events = false; | |
| 793 _current_poster = NULL; | |
| 794 JvmtiPendingEvent_lock->notify_all(); | |
| 795 } | |
| 796 return; | |
| 797 } | |
| 798 method = _pending_compiled_method_unload_method_ids->pop(); | |
| 799 code_begin = _pending_compiled_method_unload_code_begins->pop(); | |
| 800 } | |
| 801 } | |
| 802 } | |
| 803 | |
| 804 /////////////////////////////////////////////////////////////// | |
| 805 // | |
| 806 // JvmtiExport | |
| 807 // | |
| 808 | |
| 809 void JvmtiExport::post_raw_breakpoint(JavaThread *thread, methodOop method, address location) { | |
| 810 HandleMark hm(thread); | |
| 811 methodHandle mh(thread, method); | |
| 812 | |
| 813 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 814 if (state == NULL) { | |
| 815 return; | |
| 816 } | |
| 817 EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", | |
| 818 JvmtiTrace::safe_get_thread_name(thread))); | |
| 819 JvmtiEnvThreadStateIterator it(state); | |
| 820 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 821 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); | |
| 822 if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { | |
| 823 ThreadState old_os_state = thread->osthread()->get_state(); | |
| 824 thread->osthread()->set_state(BREAKPOINTED); | |
| 825 EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", | |
| 826 JvmtiTrace::safe_get_thread_name(thread), | |
| 827 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 828 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 829 location - mh()->code_base() )); | |
| 830 | |
| 831 JvmtiEnv *env = ets->get_env(); | |
| 832 JvmtiLocationEventMark jem(thread, mh, location); | |
| 833 JvmtiJavaThreadEventTransition jet(thread); | |
| 834 jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; | |
| 835 if (callback != NULL) { | |
| 836 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 837 jem.jni_methodID(), jem.location()); | |
| 838 } | |
| 839 | |
| 840 ets->set_breakpoint_posted(); | |
| 841 thread->osthread()->set_state(old_os_state); | |
| 842 } | |
| 843 } | |
| 844 } | |
| 845 | |
| 846 ////////////////////////////////////////////////////////////////////////////// | |
| 847 | |
| 848 bool JvmtiExport::_can_get_source_debug_extension = false; | |
| 849 bool JvmtiExport::_can_maintain_original_method_order = false; | |
| 850 bool JvmtiExport::_can_post_interpreter_events = false; | |
| 851 bool JvmtiExport::_can_post_exceptions = false; | |
| 852 bool JvmtiExport::_can_post_breakpoint = false; | |
| 853 bool JvmtiExport::_can_post_field_access = false; | |
| 854 bool JvmtiExport::_can_post_field_modification = false; | |
| 855 bool JvmtiExport::_can_post_method_entry = false; | |
| 856 bool JvmtiExport::_can_post_method_exit = false; | |
| 857 bool JvmtiExport::_can_pop_frame = false; | |
| 858 bool JvmtiExport::_can_force_early_return = false; | |
| 859 | |
| 860 bool JvmtiExport::_should_post_single_step = false; | |
| 861 bool JvmtiExport::_should_post_field_access = false; | |
| 862 bool JvmtiExport::_should_post_field_modification = false; | |
| 863 bool JvmtiExport::_should_post_class_load = false; | |
| 864 bool JvmtiExport::_should_post_class_prepare = false; | |
| 865 bool JvmtiExport::_should_post_class_unload = false; | |
| 866 bool JvmtiExport::_should_post_thread_life = false; | |
| 867 bool JvmtiExport::_should_clean_up_heap_objects = false; | |
| 868 bool JvmtiExport::_should_post_native_method_bind = false; | |
| 869 bool JvmtiExport::_should_post_dynamic_code_generated = false; | |
| 870 bool JvmtiExport::_should_post_data_dump = false; | |
| 871 bool JvmtiExport::_should_post_compiled_method_load = false; | |
| 872 bool JvmtiExport::_should_post_compiled_method_unload = false; | |
| 873 bool JvmtiExport::_should_post_monitor_contended_enter = false; | |
| 874 bool JvmtiExport::_should_post_monitor_contended_entered = false; | |
| 875 bool JvmtiExport::_should_post_monitor_wait = false; | |
| 876 bool JvmtiExport::_should_post_monitor_waited = false; | |
| 877 bool JvmtiExport::_should_post_garbage_collection_start = false; | |
| 878 bool JvmtiExport::_should_post_garbage_collection_finish = false; | |
| 879 bool JvmtiExport::_should_post_object_free = false; | |
| 880 bool JvmtiExport::_should_post_resource_exhausted = false; | |
| 881 bool JvmtiExport::_should_post_vm_object_alloc = false; | |
| 882 | |
| 883 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 884 | |
| 885 | |
| 886 // | |
| 887 // JVMTI single step management | |
| 888 // | |
| 889 void JvmtiExport::at_single_stepping_point(JavaThread *thread, methodOop method, address location) { | |
| 890 assert(JvmtiExport::should_post_single_step(), "must be single stepping"); | |
| 891 | |
| 892 HandleMark hm(thread); | |
| 893 methodHandle mh(thread, method); | |
| 894 | |
| 895 // update information about current location and post a step event | |
| 896 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 897 if (state == NULL) { | |
| 898 return; | |
| 899 } | |
| 900 EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", | |
| 901 JvmtiTrace::safe_get_thread_name(thread))); | |
| 902 if (!state->hide_single_stepping()) { | |
| 903 if (state->is_pending_step_for_popframe()) { | |
| 904 state->process_pending_step_for_popframe(); | |
| 905 } | |
| 906 if (state->is_pending_step_for_earlyret()) { | |
| 907 state->process_pending_step_for_earlyret(); | |
| 908 } | |
| 909 JvmtiExport::post_single_step(thread, mh(), location); | |
| 910 } | |
| 911 } | |
| 912 | |
| 913 | |
| 914 void JvmtiExport::expose_single_stepping(JavaThread *thread) { | |
| 915 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 916 if (state != NULL) { | |
| 917 state->clear_hide_single_stepping(); | |
| 918 } | |
| 919 } | |
| 920 | |
| 921 | |
| 922 bool JvmtiExport::hide_single_stepping(JavaThread *thread) { | |
| 923 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 924 if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
| 925 state->set_hide_single_stepping(); | |
| 926 return true; | |
| 927 } else { | |
| 928 return false; | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 void JvmtiExport::post_class_load(JavaThread *thread, klassOop klass) { | |
| 933 HandleMark hm(thread); | |
| 934 KlassHandle kh(thread, klass); | |
| 935 | |
| 936 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", | |
| 937 JvmtiTrace::safe_get_thread_name(thread))); | |
| 938 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
| 939 if (state == NULL) { | |
| 940 return; | |
| 941 } | |
| 942 JvmtiEnvThreadStateIterator it(state); | |
| 943 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 944 if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { | |
| 945 EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", | |
| 946 JvmtiTrace::safe_get_thread_name(thread), | |
| 947 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
| 948 | |
| 949 JvmtiEnv *env = ets->get_env(); | |
| 950 JvmtiClassEventMark jem(thread, kh()); | |
| 951 JvmtiJavaThreadEventTransition jet(thread); | |
| 952 jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; | |
| 953 if (callback != NULL) { | |
| 954 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
| 955 } | |
| 956 } | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 | |
| 961 void JvmtiExport::post_class_prepare(JavaThread *thread, klassOop klass) { | |
| 962 HandleMark hm(thread); | |
| 963 KlassHandle kh(thread, klass); | |
| 964 | |
| 965 EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", | |
| 966 JvmtiTrace::safe_get_thread_name(thread))); | |
| 967 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
| 968 if (state == NULL) { | |
| 969 return; | |
| 970 } | |
| 971 JvmtiEnvThreadStateIterator it(state); | |
| 972 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 973 if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { | |
| 974 EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", | |
| 975 JvmtiTrace::safe_get_thread_name(thread), | |
| 976 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
| 977 | |
| 978 JvmtiEnv *env = ets->get_env(); | |
| 979 JvmtiClassEventMark jem(thread, kh()); | |
| 980 JvmtiJavaThreadEventTransition jet(thread); | |
| 981 jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; | |
| 982 if (callback != NULL) { | |
| 983 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); | |
| 984 } | |
| 985 } | |
| 986 } | |
| 987 } | |
| 988 | |
| 989 void JvmtiExport::post_class_unload(klassOop klass) { | |
| 990 Thread *thread = Thread::current(); | |
| 991 HandleMark hm(thread); | |
| 992 KlassHandle kh(thread, klass); | |
| 993 | |
| 994 EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); | |
| 995 if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
| 996 assert(thread->is_VM_thread(), "wrong thread"); | |
| 997 | |
| 998 // get JavaThread for whom we are proxy | |
| 999 JavaThread *real_thread = | |
| 1000 (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); | |
| 1001 | |
| 1002 JvmtiEnvIterator it; | |
| 1003 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1004 if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { | |
| 1005 EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", | |
| 1006 kh()==NULL? "NULL" : Klass::cast(kh())->external_name() )); | |
| 1007 | |
| 1008 // do everything manually, since this is a proxy - needs special care | |
| 1009 JNIEnv* jni_env = real_thread->jni_environment(); | |
| 1010 jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); | |
| 1011 jclass jk = (jclass)JNIHandles::make_local(real_thread, Klass::cast(kh())->java_mirror()); | |
| 1012 | |
| 1013 // Before we call the JVMTI agent, we have to set the state in the | |
| 1014 // thread for which we are proxying. | |
| 1015 JavaThreadState prev_state = real_thread->thread_state(); | |
| 1016 assert(prev_state == _thread_blocked, "JavaThread should be at safepoint"); | |
| 1017 real_thread->set_thread_state(_thread_in_native); | |
| 1018 | |
| 1019 jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; | |
| 1020 if (callback != NULL) { | |
| 1021 (*callback)(env->jvmti_external(), jni_env, jt, jk); | |
| 1022 } | |
| 1023 | |
| 1024 assert(real_thread->thread_state() == _thread_in_native, | |
| 1025 "JavaThread should be in native"); | |
| 1026 real_thread->set_thread_state(prev_state); | |
| 1027 | |
| 1028 JNIHandles::destroy_local(jk); | |
| 1029 JNIHandles::destroy_local(jt); | |
| 1030 } | |
| 1031 } | |
| 1032 } | |
| 1033 } | |
| 1034 | |
| 1035 | |
| 1036 void JvmtiExport::post_thread_start(JavaThread *thread) { | |
| 1037 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
| 1038 | |
| 1039 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", | |
| 1040 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1041 | |
| 1042 // do JVMTI thread initialization (if needed) | |
| 1043 JvmtiEventController::thread_started(thread); | |
| 1044 | |
| 1045 // Do not post thread start event for hidden java thread. | |
| 1046 if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && | |
| 1047 !thread->is_hidden_from_external_view()) { | |
| 1048 JvmtiEnvIterator it; | |
| 1049 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1050 if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { | |
| 1051 EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", | |
| 1052 JvmtiTrace::safe_get_thread_name(thread) )); | |
| 1053 | |
| 1054 JvmtiThreadEventMark jem(thread); | |
| 1055 JvmtiJavaThreadEventTransition jet(thread); | |
| 1056 jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; | |
| 1057 if (callback != NULL) { | |
| 1058 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
| 1059 } | |
| 1060 } | |
| 1061 } | |
| 1062 } | |
| 1063 } | |
| 1064 | |
| 1065 | |
| 1066 void JvmtiExport::post_thread_end(JavaThread *thread) { | |
| 1067 EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", | |
| 1068 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1069 | |
| 1070 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1071 if (state == NULL) { | |
| 1072 return; | |
| 1073 } | |
| 1074 | |
| 1075 // Do not post thread end event for hidden java thread. | |
| 1076 if (state->is_enabled(JVMTI_EVENT_THREAD_END) && | |
| 1077 !thread->is_hidden_from_external_view()) { | |
| 1078 | |
| 1079 JvmtiEnvThreadStateIterator it(state); | |
| 1080 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1081 if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { | |
| 1082 EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", | |
| 1083 JvmtiTrace::safe_get_thread_name(thread) )); | |
| 1084 | |
| 1085 JvmtiEnv *env = ets->get_env(); | |
| 1086 JvmtiThreadEventMark jem(thread); | |
| 1087 JvmtiJavaThreadEventTransition jet(thread); | |
| 1088 jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; | |
| 1089 if (callback != NULL) { | |
| 1090 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); | |
| 1091 } | |
| 1092 } | |
| 1093 } | |
| 1094 } | |
| 1095 } | |
| 1096 | |
| 1097 void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { | |
| 1098 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); | |
| 1099 assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); | |
| 1100 | |
| 1101 EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); | |
| 1102 EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); | |
| 1103 | |
| 1104 jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; | |
| 1105 if (callback != NULL) { | |
| 1106 (*callback)(env->jvmti_external(), tag); | |
| 1107 } | |
| 1108 } | |
| 1109 | |
| 1110 void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { | |
| 1111 EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); | |
| 1112 | |
| 1113 JvmtiEnvIterator it; | |
| 1114 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1115 if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { | |
| 1116 EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); | |
| 1117 | |
| 1118 JavaThread *thread = JavaThread::current(); | |
| 1119 JvmtiThreadEventMark jem(thread); | |
| 1120 JvmtiJavaThreadEventTransition jet(thread); | |
| 1121 jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; | |
| 1122 if (callback != NULL) { | |
| 1123 (*callback)(env->jvmti_external(), jem.jni_env(), | |
| 1124 resource_exhausted_flags, NULL, description); | |
| 1125 } | |
| 1126 } | |
| 1127 } | |
| 1128 } | |
| 1129 | |
| 1130 void JvmtiExport::post_method_entry(JavaThread *thread, methodOop method, frame current_frame) { | |
| 1131 HandleMark hm(thread); | |
| 1132 methodHandle mh(thread, method); | |
| 1133 | |
| 1134 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", | |
| 1135 JvmtiTrace::safe_get_thread_name(thread), | |
| 1136 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1137 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1138 | |
| 1139 JvmtiThreadState* state = thread->jvmti_thread_state(); | |
| 1140 if (state == NULL || !state->is_interp_only_mode()) { | |
| 1141 // for any thread that actually wants method entry, interp_only_mode is set | |
| 1142 return; | |
| 1143 } | |
| 1144 | |
| 1145 state->incr_cur_stack_depth(); | |
| 1146 | |
| 1147 if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
| 1148 JvmtiEnvThreadStateIterator it(state); | |
| 1149 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1150 if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { | |
| 1151 EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", | |
| 1152 JvmtiTrace::safe_get_thread_name(thread), | |
| 1153 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1154 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1155 | |
| 1156 JvmtiEnv *env = ets->get_env(); | |
| 1157 JvmtiMethodEventMark jem(thread, mh); | |
| 1158 JvmtiJavaThreadEventTransition jet(thread); | |
| 1159 jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; | |
| 1160 if (callback != NULL) { | |
| 1161 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); | |
| 1162 } | |
| 1163 } | |
| 1164 } | |
| 1165 } | |
| 1166 } | |
| 1167 | |
| 1168 void JvmtiExport::post_method_exit(JavaThread *thread, methodOop method, frame current_frame) { | |
| 1169 HandleMark hm(thread); | |
| 1170 methodHandle mh(thread, method); | |
| 1171 | |
| 1172 EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", | |
| 1173 JvmtiTrace::safe_get_thread_name(thread), | |
| 1174 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1175 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1176 | |
| 1177 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1178 if (state == NULL || !state->is_interp_only_mode()) { | |
| 1179 // for any thread that actually wants method exit, interp_only_mode is set | |
| 1180 return; | |
| 1181 } | |
| 1182 | |
| 1183 // return a flag when a method terminates by throwing an exception | |
| 1184 // i.e. if an exception is thrown and it's not caught by the current method | |
| 1185 bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); | |
| 1186 | |
| 1187 | |
| 1188 if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
| 1189 Handle result; | |
| 1190 jvalue value; | |
| 1191 value.j = 0L; | |
| 1192 | |
| 1193 // if the method hasn't been popped because of an exception then we populate | |
| 1194 // the return_value parameter for the callback. At this point we only have | |
| 1195 // the address of a "raw result" and we just call into the interpreter to | |
| 1196 // convert this into a jvalue. | |
| 1197 if (!exception_exit) { | |
| 1198 oop oop_result; | |
| 1199 BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); | |
| 1200 if (type == T_OBJECT || type == T_ARRAY) { | |
| 1201 result = Handle(thread, oop_result); | |
| 1202 } | |
| 1203 } | |
| 1204 | |
| 1205 JvmtiEnvThreadStateIterator it(state); | |
| 1206 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1207 if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { | |
| 1208 EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %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 JvmtiEnv *env = ets->get_env(); | |
| 1214 JvmtiMethodEventMark jem(thread, mh); | |
| 1215 if (result.not_null()) { | |
| 1216 value.l = JNIHandles::make_local(thread, result()); | |
| 1217 } | |
| 1218 JvmtiJavaThreadEventTransition jet(thread); | |
| 1219 jvmtiEventMethodExit callback = env->callbacks()->MethodExit; | |
| 1220 if (callback != NULL) { | |
| 1221 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1222 jem.jni_methodID(), exception_exit, value); | |
| 1223 } | |
| 1224 } | |
| 1225 } | |
| 1226 } | |
| 1227 | |
| 1228 if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
| 1229 JvmtiEnvThreadStateIterator it(state); | |
| 1230 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1231 int cur_frame_number = state->cur_stack_depth(); | |
| 1232 | |
| 1233 if (ets->is_frame_pop(cur_frame_number)) { | |
| 1234 // we have a NotifyFramePop entry for this frame. | |
| 1235 // now check that this env/thread wants this event | |
| 1236 if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { | |
| 1237 EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", | |
| 1238 JvmtiTrace::safe_get_thread_name(thread), | |
| 1239 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1240 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); | |
| 1241 | |
| 1242 // we also need to issue a frame pop event for this frame | |
| 1243 JvmtiEnv *env = ets->get_env(); | |
| 1244 JvmtiMethodEventMark jem(thread, mh); | |
| 1245 JvmtiJavaThreadEventTransition jet(thread); | |
| 1246 jvmtiEventFramePop callback = env->callbacks()->FramePop; | |
| 1247 if (callback != NULL) { | |
| 1248 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1249 jem.jni_methodID(), exception_exit); | |
| 1250 } | |
| 1251 } | |
| 1252 // remove the frame's entry | |
| 1253 ets->clear_frame_pop(cur_frame_number); | |
| 1254 } | |
| 1255 } | |
| 1256 } | |
| 1257 | |
| 1258 state->decr_cur_stack_depth(); | |
| 1259 } | |
| 1260 | |
| 1261 | |
| 1262 // Todo: inline this for optimization | |
| 1263 void JvmtiExport::post_single_step(JavaThread *thread, methodOop method, address location) { | |
| 1264 HandleMark hm(thread); | |
| 1265 methodHandle mh(thread, method); | |
| 1266 | |
| 1267 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1268 if (state == NULL) { | |
| 1269 return; | |
| 1270 } | |
| 1271 JvmtiEnvThreadStateIterator it(state); | |
| 1272 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1273 ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); | |
| 1274 if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { | |
| 1275 EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", | |
| 1276 JvmtiTrace::safe_get_thread_name(thread), | |
| 1277 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1278 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1279 location - mh()->code_base() )); | |
| 1280 | |
| 1281 JvmtiEnv *env = ets->get_env(); | |
| 1282 JvmtiLocationEventMark jem(thread, mh, location); | |
| 1283 JvmtiJavaThreadEventTransition jet(thread); | |
| 1284 jvmtiEventSingleStep callback = env->callbacks()->SingleStep; | |
| 1285 if (callback != NULL) { | |
| 1286 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1287 jem.jni_methodID(), jem.location()); | |
| 1288 } | |
| 1289 | |
| 1290 ets->set_single_stepping_posted(); | |
| 1291 } | |
| 1292 } | |
| 1293 } | |
| 1294 | |
| 1295 | |
| 1296 void JvmtiExport::post_exception_throw(JavaThread *thread, methodOop method, address location, oop exception) { | |
| 1297 HandleMark hm(thread); | |
| 1298 methodHandle mh(thread, method); | |
| 1299 Handle exception_handle(thread, exception); | |
| 1300 | |
| 1301 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1302 if (state == NULL) { | |
| 1303 return; | |
| 1304 } | |
| 1305 | |
| 1306 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", | |
| 1307 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1308 if (!state->is_exception_detected()) { | |
| 1309 state->set_exception_detected(); | |
| 1310 JvmtiEnvThreadStateIterator it(state); | |
| 1311 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1312 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { | |
| 1313 | |
| 1314 EVT_TRACE(JVMTI_EVENT_EXCEPTION, | |
| 1315 ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", | |
| 1316 JvmtiTrace::safe_get_thread_name(thread), | |
| 1317 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1318 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1319 location - mh()->code_base() )); | |
| 1320 | |
| 1321 JvmtiEnv *env = ets->get_env(); | |
| 1322 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
| 1323 | |
| 1324 // It's okay to clear these exceptions here because we duplicate | |
| 1325 // this lookup in InterpreterRuntime::exception_handler_for_exception. | |
| 1326 EXCEPTION_MARK; | |
| 1327 | |
| 1328 bool should_repeat; | |
| 1329 vframeStream st(thread); | |
| 1330 assert(!st.at_end(), "cannot be at end"); | |
| 1331 methodOop current_method = NULL; | |
| 1332 int current_bci = -1; | |
| 1333 do { | |
| 1334 current_method = st.method(); | |
| 1335 current_bci = st.bci(); | |
| 1336 do { | |
| 1337 should_repeat = false; | |
| 1338 KlassHandle eh_klass(thread, exception_handle()->klass()); | |
| 1339 current_bci = current_method->fast_exception_handler_bci_for( | |
| 1340 eh_klass, current_bci, THREAD); | |
| 1341 if (HAS_PENDING_EXCEPTION) { | |
| 1342 exception_handle = KlassHandle(thread, PENDING_EXCEPTION); | |
| 1343 CLEAR_PENDING_EXCEPTION; | |
| 1344 should_repeat = true; | |
| 1345 } | |
| 1346 } while (should_repeat && (current_bci != -1)); | |
| 1347 st.next(); | |
| 1348 } while ((current_bci < 0) && (!st.at_end())); | |
| 1349 | |
| 1350 jmethodID catch_jmethodID; | |
| 1351 if (current_bci < 0) { | |
| 1352 catch_jmethodID = 0; | |
| 1353 current_bci = 0; | |
| 1354 } else { | |
| 1355 catch_jmethodID = jem.to_jmethodID( | |
| 1356 methodHandle(thread, current_method)); | |
| 1357 } | |
| 1358 | |
| 1359 JvmtiJavaThreadEventTransition jet(thread); | |
| 1360 jvmtiEventException callback = env->callbacks()->Exception; | |
| 1361 if (callback != NULL) { | |
| 1362 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1363 jem.jni_methodID(), jem.location(), | |
| 1364 jem.exception(), | |
| 1365 catch_jmethodID, current_bci); | |
| 1366 } | |
| 1367 } | |
| 1368 } | |
| 1369 } | |
| 1370 | |
| 1371 // frames may get popped because of this throw, be safe - invalidate cached depth | |
| 1372 state->invalidate_cur_stack_depth(); | |
| 1373 } | |
| 1374 | |
| 1375 | |
| 1376 void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, methodOop method, address location, oop exception, bool in_handler_frame) { | |
| 1377 HandleMark hm(thread); | |
| 1378 methodHandle mh(thread, method); | |
| 1379 Handle exception_handle(thread, exception); | |
| 1380 | |
| 1381 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1382 if (state == NULL) { | |
| 1383 return; | |
| 1384 } | |
| 1385 EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
| 1386 ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", | |
| 1387 JvmtiTrace::safe_get_thread_name(thread), | |
| 1388 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1389 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1390 location==0? "no location:" : "", | |
| 1391 location==0? 0 : location - mh()->code_base(), | |
| 1392 in_handler_frame? "in handler frame" : "not handler frame" )); | |
| 1393 | |
| 1394 if (state->is_exception_detected()) { | |
| 1395 | |
| 1396 state->invalidate_cur_stack_depth(); | |
| 1397 if (!in_handler_frame) { | |
| 1398 // Not in exception handler. | |
| 1399 if(state->is_interp_only_mode()) { | |
| 1400 // method exit and frame pop events are posted only in interp mode. | |
| 1401 // When these events are enabled code should be in running in interp mode. | |
| 1402 JvmtiExport::post_method_exit(thread, method, thread->last_frame()); | |
| 1403 // The cached cur_stack_depth might have changed from the | |
| 1404 // operations of frame pop or method exit. We are not 100% sure | |
| 1405 // the cached cur_stack_depth is still valid depth so invalidate | |
| 1406 // it. | |
| 1407 state->invalidate_cur_stack_depth(); | |
| 1408 } | |
| 1409 } else { | |
| 1410 // In exception handler frame. Report exception catch. | |
| 1411 assert(location != NULL, "must be a known location"); | |
| 1412 // Update cur_stack_depth - the frames above the current frame | |
| 1413 // have been unwound due to this exception: | |
| 1414 assert(!state->is_exception_caught(), "exception must not be caught yet."); | |
| 1415 state->set_exception_caught(); | |
| 1416 | |
| 1417 JvmtiEnvThreadStateIterator it(state); | |
| 1418 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1419 if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { | |
| 1420 EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, | |
| 1421 ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", | |
| 1422 JvmtiTrace::safe_get_thread_name(thread), | |
| 1423 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1424 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1425 location - mh()->code_base() )); | |
| 1426 | |
| 1427 JvmtiEnv *env = ets->get_env(); | |
| 1428 JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); | |
| 1429 JvmtiJavaThreadEventTransition jet(thread); | |
| 1430 jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; | |
| 1431 if (callback != NULL) { | |
| 1432 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1433 jem.jni_methodID(), jem.location(), | |
| 1434 jem.exception()); | |
| 1435 } | |
| 1436 } | |
| 1437 } | |
| 1438 } | |
| 1439 } | |
| 1440 } | |
| 1441 | |
| 1442 oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
| 1443 klassOop klass, jfieldID fieldID, bool is_static) { | |
| 1444 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1445 // At least one field access watch is set so we have more work | |
| 1446 // to do. This wrapper is used by entry points that allow us | |
| 1447 // to create handles in post_field_access_by_jni(). | |
| 1448 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
| 1449 // event posting can block so refetch oop if we were passed a jobj | |
| 1450 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1451 } | |
| 1452 return obj; | |
| 1453 } | |
| 1454 | |
| 1455 oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
| 1456 klassOop klass, jfieldID fieldID, bool is_static) { | |
| 1457 if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1458 // At least one field access watch is set so we have more work | |
| 1459 // to do. This wrapper is used by "quick" entry points that don't | |
| 1460 // allow us to create handles in post_field_access_by_jni(). We | |
| 1461 // override that with a ResetNoHandleMark. | |
| 1462 ResetNoHandleMark rnhm; | |
| 1463 post_field_access_by_jni(thread, obj, klass, fieldID, is_static); | |
| 1464 // event posting can block so refetch oop if we were passed a jobj | |
| 1465 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1466 } | |
| 1467 return obj; | |
| 1468 } | |
| 1469 | |
| 1470 void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, | |
| 1471 klassOop klass, jfieldID fieldID, bool is_static) { | |
| 1472 // We must be called with a Java context in order to provide reasonable | |
| 1473 // values for the klazz, method, and location fields. The callers of this | |
| 1474 // function don't make the call unless there is a Java context. | |
| 1475 assert(thread->has_last_Java_frame(), "must be called with a Java context"); | |
| 1476 | |
| 1477 ResourceMark rm; | |
| 1478 fieldDescriptor fd; | |
| 1479 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
| 1480 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
| 1481 assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); | |
| 1482 if (!valid_fieldID) return; | |
| 1483 // field accesses are not watched so bail | |
| 1484 if (!fd.is_field_access_watched()) return; | |
| 1485 | |
| 1486 HandleMark hm(thread); | |
| 1487 KlassHandle h_klass(thread, klass); | |
| 1488 Handle h_obj; | |
| 1489 if (!is_static) { | |
| 1490 // non-static field accessors have an object, but we need a handle | |
| 1491 assert(obj != NULL, "non-static needs an object"); | |
| 1492 h_obj = Handle(thread, obj); | |
| 1493 } | |
| 1494 post_field_access(thread, | |
| 1495 thread->last_frame().interpreter_frame_method(), | |
| 1496 thread->last_frame().interpreter_frame_bcp(), | |
| 1497 h_klass, h_obj, fieldID); | |
| 1498 } | |
| 1499 | |
| 1500 void JvmtiExport::post_field_access(JavaThread *thread, methodOop method, | |
| 1501 address location, KlassHandle field_klass, Handle object, jfieldID field) { | |
| 1502 | |
| 1503 HandleMark hm(thread); | |
| 1504 methodHandle mh(thread, method); | |
| 1505 | |
| 1506 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1507 if (state == NULL) { | |
| 1508 return; | |
| 1509 } | |
| 1510 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", | |
| 1511 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1512 JvmtiEnvThreadStateIterator it(state); | |
| 1513 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1514 if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { | |
| 1515 EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", | |
| 1516 JvmtiTrace::safe_get_thread_name(thread), | |
| 1517 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1518 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1519 location - mh()->code_base() )); | |
| 1520 | |
| 1521 JvmtiEnv *env = ets->get_env(); | |
| 1522 JvmtiLocationEventMark jem(thread, mh, location); | |
| 1523 jclass field_jclass = jem.to_jclass(field_klass()); | |
| 1524 jobject field_jobject = jem.to_jobject(object()); | |
| 1525 JvmtiJavaThreadEventTransition jet(thread); | |
| 1526 jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; | |
| 1527 if (callback != NULL) { | |
| 1528 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1529 jem.jni_methodID(), jem.location(), | |
| 1530 field_jclass, field_jobject, field); | |
| 1531 } | |
| 1532 } | |
| 1533 } | |
| 1534 } | |
| 1535 | |
| 1536 oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, | |
| 1537 klassOop klass, jfieldID fieldID, bool is_static, | |
| 1538 char sig_type, jvalue *value) { | |
| 1539 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1540 // At least one field modification watch is set so we have more work | |
| 1541 // to do. This wrapper is used by entry points that allow us | |
| 1542 // to create handles in post_field_modification_by_jni(). | |
| 1543 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
| 1544 // event posting can block so refetch oop if we were passed a jobj | |
| 1545 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1546 } | |
| 1547 return obj; | |
| 1548 } | |
| 1549 | |
| 1550 oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, | |
| 1551 klassOop klass, jfieldID fieldID, bool is_static, | |
| 1552 char sig_type, jvalue *value) { | |
| 1553 if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { | |
| 1554 // At least one field modification watch is set so we have more work | |
| 1555 // to do. This wrapper is used by "quick" entry points that don't | |
| 1556 // allow us to create handles in post_field_modification_by_jni(). We | |
| 1557 // override that with a ResetNoHandleMark. | |
| 1558 ResetNoHandleMark rnhm; | |
| 1559 post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); | |
| 1560 // event posting can block so refetch oop if we were passed a jobj | |
| 1561 if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); | |
| 1562 } | |
| 1563 return obj; | |
| 1564 } | |
| 1565 | |
| 1566 void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, | |
| 1567 klassOop klass, jfieldID fieldID, bool is_static, | |
| 1568 char sig_type, jvalue *value) { | |
| 1569 // We must be called with a Java context in order to provide reasonable | |
| 1570 // values for the klazz, method, and location fields. The callers of this | |
| 1571 // function don't make the call unless there is a Java context. | |
| 1572 assert(thread->has_last_Java_frame(), "must be called with Java context"); | |
| 1573 | |
| 1574 ResourceMark rm; | |
| 1575 fieldDescriptor fd; | |
| 1576 // if get_field_descriptor finds fieldID to be invalid, then we just bail | |
| 1577 bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); | |
| 1578 assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); | |
| 1579 if (!valid_fieldID) return; | |
| 1580 // field modifications are not watched so bail | |
| 1581 if (!fd.is_field_modification_watched()) return; | |
| 1582 | |
| 1583 HandleMark hm(thread); | |
| 1584 | |
| 1585 Handle h_obj; | |
| 1586 if (!is_static) { | |
| 1587 // non-static field accessors have an object, but we need a handle | |
| 1588 assert(obj != NULL, "non-static needs an object"); | |
| 1589 h_obj = Handle(thread, obj); | |
| 1590 } | |
| 1591 KlassHandle h_klass(thread, klass); | |
| 1592 post_field_modification(thread, | |
| 1593 thread->last_frame().interpreter_frame_method(), | |
| 1594 thread->last_frame().interpreter_frame_bcp(), | |
| 1595 h_klass, h_obj, fieldID, sig_type, value); | |
| 1596 } | |
| 1597 | |
| 1598 void JvmtiExport::post_raw_field_modification(JavaThread *thread, methodOop method, | |
| 1599 address location, KlassHandle field_klass, Handle object, jfieldID field, | |
| 1600 char sig_type, jvalue *value) { | |
| 1601 | |
| 1602 if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'C' || sig_type == 'S') { | |
| 1603 // 'I' instructions are used for byte, char, short and int. | |
| 1604 // determine which it really is, and convert | |
| 1605 fieldDescriptor fd; | |
| 1606 bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); | |
| 1607 // should be found (if not, leave as is) | |
| 1608 if (found) { | |
| 1609 jint ival = value->i; | |
| 1610 // convert value from int to appropriate type | |
| 1611 switch (fd.field_type()) { | |
| 1612 case T_BOOLEAN: | |
| 1613 sig_type = 'Z'; | |
| 1614 value->i = 0; // clear it | |
| 1615 value->z = (jboolean)ival; | |
| 1616 break; | |
| 1617 case T_BYTE: | |
| 1618 sig_type = 'B'; | |
| 1619 value->i = 0; // clear it | |
| 1620 value->b = (jbyte)ival; | |
| 1621 break; | |
| 1622 case T_CHAR: | |
| 1623 sig_type = 'C'; | |
| 1624 value->i = 0; // clear it | |
| 1625 value->c = (jchar)ival; | |
| 1626 break; | |
| 1627 case T_SHORT: | |
| 1628 sig_type = 'S'; | |
| 1629 value->i = 0; // clear it | |
| 1630 value->s = (jshort)ival; | |
| 1631 break; | |
| 1632 case T_INT: | |
| 1633 // nothing to do | |
| 1634 break; | |
| 1635 default: | |
| 1636 // this is an integer instruction, should be one of above | |
| 1637 ShouldNotReachHere(); | |
| 1638 break; | |
| 1639 } | |
| 1640 } | |
| 1641 } | |
| 1642 | |
| 1643 // convert oop to JNI handle. | |
| 1644 if (sig_type == 'L' || sig_type == '[') { | |
| 1645 value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); | |
| 1646 } | |
| 1647 | |
| 1648 post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); | |
| 1649 | |
| 1650 // Destroy the JNI handle allocated above. | |
| 1651 if (sig_type == 'L') { | |
| 1652 JNIHandles::destroy_local(value->l); | |
| 1653 } | |
| 1654 } | |
| 1655 | |
| 1656 void JvmtiExport::post_field_modification(JavaThread *thread, methodOop method, | |
| 1657 address location, KlassHandle field_klass, Handle object, jfieldID field, | |
| 1658 char sig_type, jvalue *value_ptr) { | |
| 1659 | |
| 1660 HandleMark hm(thread); | |
| 1661 methodHandle mh(thread, method); | |
| 1662 | |
| 1663 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1664 if (state == NULL) { | |
| 1665 return; | |
| 1666 } | |
| 1667 EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
| 1668 ("JVMTI [%s] Trg Field Modification event triggered", | |
| 1669 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1670 | |
| 1671 JvmtiEnvThreadStateIterator it(state); | |
| 1672 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1673 if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { | |
| 1674 EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, | |
| 1675 ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", | |
| 1676 JvmtiTrace::safe_get_thread_name(thread), | |
| 1677 (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), | |
| 1678 (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), | |
| 1679 location - mh()->code_base() )); | |
| 1680 | |
| 1681 JvmtiEnv *env = ets->get_env(); | |
| 1682 JvmtiLocationEventMark jem(thread, mh, location); | |
| 1683 jclass field_jclass = jem.to_jclass(field_klass()); | |
| 1684 jobject field_jobject = jem.to_jobject(object()); | |
| 1685 JvmtiJavaThreadEventTransition jet(thread); | |
| 1686 jvmtiEventFieldModification callback = env->callbacks()->FieldModification; | |
| 1687 if (callback != NULL) { | |
| 1688 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 1689 jem.jni_methodID(), jem.location(), | |
| 1690 field_jclass, field_jobject, field, sig_type, *value_ptr); | |
| 1691 } | |
| 1692 } | |
| 1693 } | |
| 1694 } | |
| 1695 | |
| 1696 void JvmtiExport::post_native_method_bind(methodOop method, address* function_ptr) { | |
| 1697 JavaThread* thread = JavaThread::current(); | |
| 1698 assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); | |
| 1699 | |
| 1700 HandleMark hm(thread); | |
| 1701 methodHandle mh(thread, method); | |
| 1702 | |
| 1703 EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", | |
| 1704 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1705 | |
| 1706 if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
| 1707 JvmtiEnvIterator it; | |
| 1708 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1709 if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { | |
| 1710 EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", | |
| 1711 JvmtiTrace::safe_get_thread_name(thread) )); | |
| 1712 | |
| 1713 JvmtiMethodEventMark jem(thread, mh); | |
| 1714 JvmtiJavaThreadEventTransition jet(thread); | |
| 1715 JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); | |
| 1716 jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; | |
| 1717 if (callback != NULL) { | |
| 1718 (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), | |
| 1719 jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); | |
| 1720 } | |
| 1721 } | |
| 1722 } | |
| 1723 } | |
| 1724 } | |
| 1725 | |
| 1726 | |
| 1727 void JvmtiExport::post_compiled_method_load(nmethod *nm) { | |
| 1728 // If there are pending CompiledMethodUnload events then these are | |
| 1729 // posted before this CompiledMethodLoad event. We "lock" the nmethod and | |
| 1730 // maintain a handle to the methodOop to ensure that the nmethod isn't | |
| 1731 // flushed or unloaded while posting the events. | |
| 1732 JavaThread* thread = JavaThread::current(); | |
| 1733 if (have_pending_compiled_method_unload_events()) { | |
| 1734 methodHandle mh(thread, nm->method()); | |
| 1735 nmethodLocker nml(nm); | |
| 1736 post_pending_compiled_method_unload_events(); | |
| 1737 } | |
| 1738 | |
| 1739 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1740 ("JVMTI [%s] method compile load event triggered", | |
| 1741 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1742 | |
| 1743 JvmtiEnvIterator it; | |
| 1744 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1745 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
| 1746 | |
| 1747 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1748 ("JVMTI [%s] class compile method load event sent %s.%s ", | |
| 1749 JvmtiTrace::safe_get_thread_name(thread), | |
| 1750 (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), | |
| 1751 (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); | |
| 1752 | |
| 1753 ResourceMark rm(thread); | |
| 1754 JvmtiCompiledMethodLoadEventMark jem(thread, nm); | |
| 1755 JvmtiJavaThreadEventTransition jet(thread); | |
| 1756 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
| 1757 if (callback != NULL) { | |
| 1758 (*callback)(env->jvmti_external(), jem.jni_methodID(), | |
| 1759 jem.code_size(), jem.code_data(), jem.map_length(), | |
| 1760 jem.map(), jem.compile_info()); | |
| 1761 } | |
| 1762 } | |
| 1763 } | |
| 1764 } | |
| 1765 | |
| 1766 | |
| 1767 // post a COMPILED_METHOD_LOAD event for a given environment | |
| 1768 void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
| 1769 const void *code_begin, const jint map_length, | |
| 1770 const jvmtiAddrLocationMap* map) | |
| 1771 { | |
| 1772 JavaThread* thread = JavaThread::current(); | |
| 1773 EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1774 ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", | |
| 1775 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1776 if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { | |
| 1777 | |
| 1778 EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, | |
| 1779 ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, | |
| 1780 JvmtiTrace::safe_get_thread_name(thread), method)); | |
| 1781 | |
| 1782 JvmtiEventMark jem(thread); | |
| 1783 JvmtiJavaThreadEventTransition jet(thread); | |
| 1784 jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; | |
| 1785 if (callback != NULL) { | |
| 1786 (*callback)(env->jvmti_external(), method, | |
| 1787 length, code_begin, map_length, | |
| 1788 map, NULL); | |
| 1789 } | |
| 1790 } | |
| 1791 } | |
| 1792 | |
| 1793 // used at a safepoint to post a CompiledMethodUnload event | |
| 1794 void JvmtiExport::post_compiled_method_unload_at_safepoint(jmethodID mid, const void *code_begin) { | |
| 1795 assert(SafepointSynchronize::is_at_safepoint(), "must be executed at a safepoint"); | |
| 1796 | |
| 1797 // create list lazily | |
| 1798 if (_pending_compiled_method_unload_method_ids == NULL) { | |
| 1799 _pending_compiled_method_unload_method_ids = new (ResourceObj::C_HEAP) GrowableArray<jmethodID>(10,true); | |
| 1800 _pending_compiled_method_unload_code_begins = new (ResourceObj::C_HEAP) GrowableArray<const void *>(10,true); | |
| 1801 } | |
| 1802 _pending_compiled_method_unload_method_ids->append(mid); | |
| 1803 _pending_compiled_method_unload_code_begins->append(code_begin); | |
| 1804 _have_pending_compiled_method_unload_events = true; | |
| 1805 } | |
| 1806 | |
| 1807 void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { | |
| 1808 JavaThread* thread = JavaThread::current(); | |
| 1809 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1810 ("JVMTI [%s] method dynamic code generated event triggered", | |
| 1811 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1812 JvmtiEnvIterator it; | |
| 1813 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1814 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
| 1815 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1816 ("JVMTI [%s] dynamic code generated event sent for %s", | |
| 1817 JvmtiTrace::safe_get_thread_name(thread), name)); | |
| 1818 JvmtiEventMark jem(thread); | |
| 1819 JvmtiJavaThreadEventTransition jet(thread); | |
| 1820 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
| 1821 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
| 1822 if (callback != NULL) { | |
| 1823 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
| 1824 } | |
| 1825 } | |
| 1826 } | |
| 1827 } | |
| 1828 | |
| 1829 void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { | |
| 1830 // In theory everyone coming thru here is in_vm but we need to be certain | |
| 1831 // because a callee will do a vm->native transition | |
| 1832 ThreadInVMfromUnknown __tiv; | |
| 1833 jvmtiPhase phase = JvmtiEnv::get_phase(); | |
| 1834 if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { | |
| 1835 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
| 1836 return; | |
| 1837 } | |
| 1838 | |
| 1839 if (have_pending_compiled_method_unload_events()) { | |
| 1840 post_pending_compiled_method_unload_events(); | |
| 1841 } | |
| 1842 post_dynamic_code_generated_internal(name, code_begin, code_end); | |
| 1843 } | |
| 1844 | |
| 1845 | |
| 1846 // post a DYNAMIC_CODE_GENERATED event for a given environment | |
| 1847 // used by GenerateEvents | |
| 1848 void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, | |
| 1849 const void *code_begin, const void *code_end) | |
| 1850 { | |
| 1851 JavaThread* thread = JavaThread::current(); | |
| 1852 EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1853 ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", | |
| 1854 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1855 if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { | |
| 1856 EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, | |
| 1857 ("JVMTI [%s] dynamic code generated event sent for %s", | |
| 1858 JvmtiTrace::safe_get_thread_name(thread), name)); | |
| 1859 JvmtiEventMark jem(thread); | |
| 1860 JvmtiJavaThreadEventTransition jet(thread); | |
| 1861 jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); | |
| 1862 jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; | |
| 1863 if (callback != NULL) { | |
| 1864 (*callback)(env->jvmti_external(), name, (void*)code_begin, length); | |
| 1865 } | |
| 1866 } | |
| 1867 } | |
| 1868 | |
| 1869 // post a DynamicCodeGenerated event while holding locks in the VM. | |
| 1870 void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, | |
| 1871 address code_begin, address code_end) | |
| 1872 { | |
| 1873 // register the stub with the current dynamic code event collector | |
| 1874 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
|
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1877 guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
| 0 | 1878 JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
| 1879 guarantee(collector != NULL, "attempt to register stub without event collector"); | |
| 1880 collector->register_stub(name, code_begin, code_end); | |
| 1881 } | |
| 1882 | |
| 1883 // Collect all the vm internally allocated objects which are visible to java world | |
| 1884 void JvmtiExport::record_vm_internal_object_allocation(oop obj) { | |
| 1885 Thread* thread = ThreadLocalStorage::thread(); | |
| 1886 if (thread != NULL && thread->is_Java_thread()) { | |
| 1887 // Can not take safepoint here. | |
| 1888 No_Safepoint_Verifier no_sfpt; | |
| 1889 // Can not take safepoint here so can not use state_for to get | |
| 1890 // jvmti thread state. | |
| 1891 JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); | |
| 1892 if (state != NULL ) { | |
| 1893 // state is non NULL when VMObjectAllocEventCollector is enabled. | |
| 1894 JvmtiVMObjectAllocEventCollector *collector; | |
| 1895 collector = state->get_vm_object_alloc_event_collector(); | |
| 1896 if (collector != NULL && collector->is_enabled()) { | |
| 1897 // Don't record classes as these will be notified via the ClassLoad | |
| 1898 // event. | |
| 1899 if (obj->klass() != SystemDictionary::class_klass()) { | |
| 1900 collector->record_allocation(obj); | |
| 1901 } | |
| 1902 } | |
| 1903 } | |
| 1904 } | |
| 1905 } | |
| 1906 | |
| 1907 void JvmtiExport::post_garbage_collection_finish() { | |
| 1908 Thread *thread = Thread::current(); // this event is posted from VM-Thread. | |
| 1909 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
| 1910 ("JVMTI [%s] garbage collection finish event triggered", | |
| 1911 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1912 JvmtiEnvIterator it; | |
| 1913 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1914 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { | |
| 1915 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, | |
| 1916 ("JVMTI [%s] garbage collection finish event sent ", | |
| 1917 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1918 JvmtiThreadEventTransition jet(thread); | |
| 1919 // JNIEnv is NULL here because this event is posted from VM Thread | |
| 1920 jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; | |
| 1921 if (callback != NULL) { | |
| 1922 (*callback)(env->jvmti_external()); | |
| 1923 } | |
| 1924 } | |
| 1925 } | |
| 1926 } | |
| 1927 | |
| 1928 void JvmtiExport::post_garbage_collection_start() { | |
| 1929 Thread* thread = Thread::current(); // this event is posted from vm-thread. | |
| 1930 EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
| 1931 ("JVMTI [%s] garbage collection start event triggered", | |
| 1932 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1933 JvmtiEnvIterator it; | |
| 1934 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1935 if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { | |
| 1936 EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, | |
| 1937 ("JVMTI [%s] garbage collection start event sent ", | |
| 1938 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1939 JvmtiThreadEventTransition jet(thread); | |
| 1940 // JNIEnv is NULL here because this event is posted from VM Thread | |
| 1941 jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; | |
| 1942 if (callback != NULL) { | |
| 1943 (*callback)(env->jvmti_external()); | |
| 1944 } | |
| 1945 } | |
| 1946 } | |
| 1947 } | |
| 1948 | |
| 1949 void JvmtiExport::post_data_dump() { | |
| 1950 Thread *thread = Thread::current(); | |
| 1951 EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
| 1952 ("JVMTI [%s] data dump request event triggered", | |
| 1953 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1954 JvmtiEnvIterator it; | |
| 1955 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 1956 if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { | |
| 1957 EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, | |
| 1958 ("JVMTI [%s] data dump request event sent ", | |
| 1959 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1960 JvmtiThreadEventTransition jet(thread); | |
| 1961 // JNIEnv is NULL here because this event is posted from VM Thread | |
| 1962 jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; | |
| 1963 if (callback != NULL) { | |
| 1964 (*callback)(env->jvmti_external()); | |
| 1965 } | |
| 1966 } | |
| 1967 } | |
| 1968 } | |
| 1969 | |
| 1970 void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
| 1971 oop object = (oop)obj_mntr->object(); | |
| 1972 if (!ServiceUtil::visible_oop(object)) { | |
| 1973 // Ignore monitor contended enter for vm internal object. | |
| 1974 return; | |
| 1975 } | |
| 1976 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 1977 if (state == NULL) { | |
| 1978 return; | |
| 1979 } | |
| 1980 | |
| 1981 HandleMark hm(thread); | |
| 1982 Handle h(thread, object); | |
| 1983 | |
| 1984 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
| 1985 ("JVMTI [%s] montior contended enter event triggered", | |
| 1986 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1987 | |
| 1988 JvmtiEnvThreadStateIterator it(state); | |
| 1989 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 1990 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { | |
| 1991 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, | |
| 1992 ("JVMTI [%s] monitor contended enter event sent", | |
| 1993 JvmtiTrace::safe_get_thread_name(thread))); | |
| 1994 JvmtiMonitorEventMark jem(thread, h()); | |
| 1995 JvmtiEnv *env = ets->get_env(); | |
| 1996 JvmtiThreadEventTransition jet(thread); | |
| 1997 jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; | |
| 1998 if (callback != NULL) { | |
| 1999 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
| 2000 } | |
| 2001 } | |
| 2002 } | |
| 2003 } | |
| 2004 | |
| 2005 void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { | |
| 2006 oop object = (oop)obj_mntr->object(); | |
| 2007 if (!ServiceUtil::visible_oop(object)) { | |
| 2008 // Ignore monitor contended entered for vm internal object. | |
| 2009 return; | |
| 2010 } | |
| 2011 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2012 if (state == NULL) { | |
| 2013 return; | |
| 2014 } | |
| 2015 | |
| 2016 HandleMark hm(thread); | |
| 2017 Handle h(thread, object); | |
| 2018 | |
| 2019 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
| 2020 ("JVMTI [%s] montior contended entered event triggered", | |
| 2021 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2022 | |
| 2023 JvmtiEnvThreadStateIterator it(state); | |
| 2024 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2025 if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { | |
| 2026 EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, | |
| 2027 ("JVMTI [%s] monitor contended enter event sent", | |
| 2028 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2029 JvmtiMonitorEventMark jem(thread, h()); | |
| 2030 JvmtiEnv *env = ets->get_env(); | |
| 2031 JvmtiThreadEventTransition jet(thread); | |
| 2032 jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; | |
| 2033 if (callback != NULL) { | |
| 2034 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); | |
| 2035 } | |
| 2036 } | |
| 2037 } | |
| 2038 } | |
| 2039 | |
| 2040 void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, | |
| 2041 jlong timeout) { | |
| 2042 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2043 if (state == NULL) { | |
| 2044 return; | |
| 2045 } | |
| 2046 | |
| 2047 HandleMark hm(thread); | |
| 2048 Handle h(thread, object); | |
| 2049 | |
| 2050 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
| 2051 ("JVMTI [%s] montior wait event triggered", | |
| 2052 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2053 | |
| 2054 JvmtiEnvThreadStateIterator it(state); | |
| 2055 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2056 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { | |
| 2057 EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, | |
| 2058 ("JVMTI [%s] monitor wait event sent ", | |
| 2059 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2060 JvmtiMonitorEventMark jem(thread, h()); | |
| 2061 JvmtiEnv *env = ets->get_env(); | |
| 2062 JvmtiThreadEventTransition jet(thread); | |
| 2063 jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; | |
| 2064 if (callback != NULL) { | |
| 2065 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 2066 jem.jni_object(), timeout); | |
| 2067 } | |
| 2068 } | |
| 2069 } | |
| 2070 } | |
| 2071 | |
| 2072 void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { | |
| 2073 oop object = (oop)obj_mntr->object(); | |
| 2074 if (!ServiceUtil::visible_oop(object)) { | |
| 2075 // Ignore monitor waited for vm internal object. | |
| 2076 return; | |
| 2077 } | |
| 2078 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
| 2079 if (state == NULL) { | |
| 2080 return; | |
| 2081 } | |
| 2082 | |
| 2083 HandleMark hm(thread); | |
| 2084 Handle h(thread, object); | |
| 2085 | |
| 2086 EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
| 2087 ("JVMTI [%s] montior waited event triggered", | |
| 2088 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2089 | |
| 2090 JvmtiEnvThreadStateIterator it(state); | |
| 2091 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 2092 if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { | |
| 2093 EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, | |
| 2094 ("JVMTI [%s] monitor waited event sent ", | |
| 2095 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2096 JvmtiMonitorEventMark jem(thread, h()); | |
| 2097 JvmtiEnv *env = ets->get_env(); | |
| 2098 JvmtiThreadEventTransition jet(thread); | |
| 2099 jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; | |
| 2100 if (callback != NULL) { | |
| 2101 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 2102 jem.jni_object(), timed_out); | |
| 2103 } | |
| 2104 } | |
| 2105 } | |
| 2106 } | |
| 2107 | |
| 2108 | |
| 2109 void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { | |
| 2110 EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", | |
| 2111 JvmtiTrace::safe_get_thread_name(thread))); | |
| 2112 if (object == NULL) { | |
| 2113 return; | |
| 2114 } | |
| 2115 HandleMark hm(thread); | |
| 2116 Handle h(thread, object); | |
| 2117 JvmtiEnvIterator it; | |
| 2118 for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { | |
| 2119 if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { | |
| 2120 EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", | |
| 2121 JvmtiTrace::safe_get_thread_name(thread), | |
| 2122 object==NULL? "NULL" : Klass::cast(java_lang_Class::as_klassOop(object))->external_name())); | |
| 2123 | |
| 2124 JvmtiVMObjectAllocEventMark jem(thread, h()); | |
| 2125 JvmtiJavaThreadEventTransition jet(thread); | |
| 2126 jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; | |
| 2127 if (callback != NULL) { | |
| 2128 (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), | |
| 2129 jem.jni_jobject(), jem.jni_class(), jem.size()); | |
| 2130 } | |
| 2131 } | |
| 2132 } | |
| 2133 } | |
| 2134 | |
| 2135 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2136 | |
| 2137 void JvmtiExport::cleanup_thread(JavaThread* thread) { | |
| 2138 assert(JavaThread::current() == thread, "thread is not current"); | |
| 2139 | |
| 2140 | |
| 2141 // This has to happen after the thread state is removed, which is | |
| 2142 // why it is not in post_thread_end_event like its complement | |
| 2143 // Maybe both these functions should be rolled into the posts? | |
| 2144 JvmtiEventController::thread_ended(thread); | |
| 2145 } | |
| 2146 | |
| 2147 void JvmtiExport::oops_do(OopClosure* f) { | |
| 2148 JvmtiCurrentBreakpoints::oops_do(f); | |
| 2149 JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); | |
| 2150 } | |
| 2151 | |
| 2152 // Onload raw monitor transition. | |
| 2153 void JvmtiExport::transition_pending_onload_raw_monitors() { | |
| 2154 JvmtiPendingMonitors::transition_raw_monitors(); | |
| 2155 } | |
| 2156 | |
| 2157 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2158 | |
| 2159 // type for the Agent_OnAttach entry point | |
| 2160 extern "C" { | |
| 2161 typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); | |
| 2162 } | |
| 2163 | |
| 2164 #ifndef SERVICES_KERNEL | |
| 2165 jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { | |
| 2166 char ebuf[1024]; | |
| 2167 char buffer[JVM_MAXPATHLEN]; | |
| 2168 void* library; | |
| 2169 jint result = JNI_ERR; | |
| 2170 | |
| 2171 // get agent name and options | |
| 2172 const char* agent = op->arg(0); | |
| 2173 const char* absParam = op->arg(1); | |
| 2174 const char* options = op->arg(2); | |
| 2175 | |
| 2176 // The abs paramter should be "true" or "false" | |
| 2177 bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); | |
| 2178 | |
| 2179 | |
| 2180 // If the path is absolute we attempt to load the library. Otherwise we try to | |
| 2181 // load it from the standard dll directory. | |
| 2182 | |
| 2183 if (is_absolute_path) { | |
| 2184 library = hpi::dll_load(agent, ebuf, sizeof ebuf); | |
| 2185 } else { | |
| 2186 // Try to load the agent from the standard dll directory | |
| 2187 hpi::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), agent); | |
| 2188 library = hpi::dll_load(buffer, ebuf, sizeof ebuf); | |
| 2189 if (library == NULL) { | |
| 2190 // not found - try local path | |
| 2191 char ns[1] = {0}; | |
| 2192 hpi::dll_build_name(buffer, sizeof(buffer), ns, agent); | |
| 2193 library = hpi::dll_load(buffer, ebuf, sizeof ebuf); | |
| 2194 } | |
| 2195 } | |
| 2196 | |
| 2197 // If the library was loaded then we attempt to invoke the Agent_OnAttach | |
| 2198 // function | |
| 2199 if (library != NULL) { | |
| 2200 | |
| 2201 // Lookup the Agent_OnAttach function | |
| 2202 OnAttachEntry_t on_attach_entry = NULL; | |
| 2203 const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; | |
| 2204 for (uint symbol_index = 0; symbol_index < ARRAY_SIZE(on_attach_symbols); symbol_index++) { | |
| 2205 on_attach_entry = | |
| 2206 CAST_TO_FN_PTR(OnAttachEntry_t, hpi::dll_lookup(library, on_attach_symbols[symbol_index])); | |
| 2207 if (on_attach_entry != NULL) break; | |
| 2208 } | |
| 2209 | |
| 2210 if (on_attach_entry == NULL) { | |
| 2211 // Agent_OnAttach missing - unload library | |
| 2212 hpi::dll_unload(library); | |
| 2213 } else { | |
| 2214 // Invoke the Agent_OnAttach function | |
| 2215 JavaThread* THREAD = JavaThread::current(); | |
| 2216 { | |
| 2217 extern struct JavaVM_ main_vm; | |
| 2218 JvmtiThreadEventMark jem(THREAD); | |
| 2219 JvmtiJavaThreadEventTransition jet(THREAD); | |
| 2220 | |
| 2221 result = (*on_attach_entry)(&main_vm, (char*)options, NULL); | |
| 2222 } | |
| 2223 | |
| 2224 // Agent_OnAttach may have used JNI | |
| 2225 if (HAS_PENDING_EXCEPTION) { | |
| 2226 CLEAR_PENDING_EXCEPTION; | |
| 2227 } | |
| 2228 | |
| 2229 // If OnAttach returns JNI_OK then we add it to the list of | |
| 2230 // agent libraries so that we can call Agent_OnUnload later. | |
| 2231 if (result == JNI_OK) { | |
| 2232 Arguments::add_loaded_agent(agent, (char*)options, is_absolute_path, library); | |
| 2233 } | |
| 2234 | |
| 2235 // Agent_OnAttach executed so completion status is JNI_OK | |
| 2236 st->print_cr("%d", result); | |
| 2237 result = JNI_OK; | |
| 2238 } | |
| 2239 } | |
| 2240 return result; | |
| 2241 } | |
| 2242 #endif // SERVICES_KERNEL | |
| 2243 | |
| 2244 // CMS has completed referencing processing so may need to update | |
| 2245 // tag maps. | |
| 2246 void JvmtiExport::cms_ref_processing_epilogue() { | |
| 2247 if (JvmtiEnv::environments_might_exist()) { | |
| 2248 JvmtiTagMap::cms_ref_processing_epilogue(); | |
| 2249 } | |
| 2250 } | |
| 2251 | |
| 2252 | |
| 2253 //////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2254 | |
| 2255 // Setup current current thread for event collection. | |
| 2256 void JvmtiEventCollector::setup_jvmti_thread_state() { | |
| 2257 // set this event collector to be the current one. | |
| 2258 JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); | |
|
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2260 // should not happen since we're trying to configure for event collection |
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2261 guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
| 0 | 2262 if (is_vm_object_alloc_event()) { |
| 2263 _prev = state->get_vm_object_alloc_event_collector(); | |
| 2264 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); | |
| 2265 } else if (is_dynamic_code_event()) { | |
| 2266 _prev = state->get_dynamic_code_event_collector(); | |
| 2267 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); | |
| 2268 } | |
| 2269 } | |
| 2270 | |
| 2271 // Unset current event collection in this thread and reset it with previous | |
| 2272 // collector. | |
| 2273 void JvmtiEventCollector::unset_jvmti_thread_state() { | |
| 2274 JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); | |
| 2275 if (state != NULL) { | |
| 2276 // restore the previous event collector (if any) | |
| 2277 if (is_vm_object_alloc_event()) { | |
| 2278 if (state->get_vm_object_alloc_event_collector() == this) { | |
| 2279 state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); | |
| 2280 } else { | |
| 2281 // this thread's jvmti state was created during the scope of | |
| 2282 // the event collector. | |
| 2283 } | |
| 2284 } else { | |
| 2285 if (is_dynamic_code_event()) { | |
| 2286 if (state->get_dynamic_code_event_collector() == this) { | |
| 2287 state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); | |
| 2288 } else { | |
| 2289 // this thread's jvmti state was created during the scope of | |
| 2290 // the event collector. | |
| 2291 } | |
| 2292 } | |
| 2293 } | |
| 2294 } | |
| 2295 } | |
| 2296 | |
| 2297 // create the dynamic code event collector | |
| 2298 JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { | |
| 2299 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 2300 setup_jvmti_thread_state(); | |
| 2301 } | |
| 2302 } | |
| 2303 | |
| 2304 // iterate over any code blob descriptors collected and post a | |
| 2305 // DYNAMIC_CODE_GENERATED event to the profiler. | |
| 2306 JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { | |
| 2307 assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); | |
| 2308 // iterate over any code blob descriptors that we collected | |
| 2309 if (_code_blobs != NULL) { | |
| 2310 for (int i=0; i<_code_blobs->length(); i++) { | |
| 2311 JvmtiCodeBlobDesc* blob = _code_blobs->at(i); | |
| 2312 JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); | |
| 2313 FreeHeap(blob); | |
| 2314 } | |
| 2315 delete _code_blobs; | |
| 2316 } | |
| 2317 unset_jvmti_thread_state(); | |
| 2318 } | |
| 2319 | |
| 2320 // register a stub | |
| 2321 void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { | |
| 2322 if (_code_blobs == NULL) { | |
| 2323 _code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(1,true); | |
| 2324 } | |
| 2325 _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); | |
| 2326 } | |
| 2327 | |
| 2328 // Setup current thread to record vm allocated objects. | |
| 2329 JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { | |
| 2330 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 2331 _enable = true; | |
| 2332 setup_jvmti_thread_state(); | |
| 2333 } else { | |
| 2334 _enable = false; | |
| 2335 } | |
| 2336 } | |
| 2337 | |
| 2338 // Post vm_object_alloc event for vm allocated objects visible to java | |
| 2339 // world. | |
| 2340 JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { | |
| 2341 if (_allocated != NULL) { | |
| 2342 set_enabled(false); | |
| 2343 for (int i = 0; i < _allocated->length(); i++) { | |
| 2344 oop obj = _allocated->at(i); | |
| 2345 if (ServiceUtil::visible_oop(obj)) { | |
| 2346 JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); | |
| 2347 } | |
| 2348 } | |
| 2349 delete _allocated; | |
| 2350 } | |
| 2351 unset_jvmti_thread_state(); | |
| 2352 } | |
| 2353 | |
| 2354 void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { | |
| 2355 assert(is_enabled(), "VM object alloc event collector is not enabled"); | |
| 2356 if (_allocated == NULL) { | |
| 2357 _allocated = new (ResourceObj::C_HEAP) GrowableArray<oop>(1, true); | |
| 2358 } | |
| 2359 _allocated->push(obj); | |
| 2360 } | |
| 2361 | |
| 2362 // GC support. | |
| 2363 void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { | |
| 2364 if (_allocated != NULL) { | |
| 2365 for(int i=_allocated->length() - 1; i >= 0; i--) { | |
| 2366 if (_allocated->at(i) != NULL) { | |
| 2367 f->do_oop(_allocated->adr_at(i)); | |
| 2368 } | |
| 2369 } | |
| 2370 } | |
| 2371 } | |
| 2372 | |
| 2373 void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { | |
| 2374 // no-op if jvmti not enabled | |
| 2375 if (!JvmtiEnv::environments_might_exist()) { | |
| 2376 return; | |
| 2377 } | |
| 2378 | |
| 2379 // Runs at safepoint. So no need to acquire Threads_lock. | |
| 2380 for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { | |
| 2381 JvmtiThreadState *state = jthr->jvmti_thread_state(); | |
| 2382 if (state != NULL) { | |
| 2383 JvmtiVMObjectAllocEventCollector *collector; | |
| 2384 collector = state->get_vm_object_alloc_event_collector(); | |
| 2385 while (collector != NULL) { | |
| 2386 collector->oops_do(f); | |
| 2387 collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); | |
| 2388 } | |
| 2389 } | |
| 2390 } | |
| 2391 } | |
| 2392 | |
| 2393 | |
| 2394 // Disable collection of VMObjectAlloc events | |
| 2395 NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { | |
| 2396 // a no-op if VMObjectAlloc event is not enabled | |
| 2397 if (!JvmtiExport::should_post_vm_object_alloc()) { | |
| 2398 return; | |
| 2399 } | |
| 2400 Thread* thread = ThreadLocalStorage::thread(); | |
| 2401 if (thread != NULL && thread->is_Java_thread()) { | |
| 2402 JavaThread* current_thread = (JavaThread*)thread; | |
| 2403 JvmtiThreadState *state = current_thread->jvmti_thread_state(); | |
| 2404 if (state != NULL) { | |
| 2405 JvmtiVMObjectAllocEventCollector *collector; | |
| 2406 collector = state->get_vm_object_alloc_event_collector(); | |
| 2407 if (collector != NULL && collector->is_enabled()) { | |
| 2408 _collector = collector; | |
| 2409 _collector->set_enabled(false); | |
| 2410 } | |
| 2411 } | |
| 2412 } | |
| 2413 } | |
| 2414 | |
| 2415 // Re-Enable collection of VMObjectAlloc events (if previously enabled) | |
| 2416 NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { | |
| 2417 if (was_enabled()) { | |
| 2418 _collector->set_enabled(true); | |
| 2419 } | |
| 2420 }; | |
| 2421 | |
| 2422 JvmtiGCMarker::JvmtiGCMarker(bool full) : _full(full), _invocation_count(0) { | |
| 2423 assert(Thread::current()->is_VM_thread(), "wrong thread"); | |
| 2424 | |
| 2425 // if there aren't any JVMTI environments then nothing to do | |
| 2426 if (!JvmtiEnv::environments_might_exist()) { | |
| 2427 return; | |
| 2428 } | |
| 2429 | |
| 2430 // GarbageCollectionStart event posted from VM thread - okay because | |
| 2431 // JVMTI is clear that the "world is stopped" and callback shouldn't | |
| 2432 // try to call into the VM. | |
| 2433 if (JvmtiExport::should_post_garbage_collection_start()) { | |
| 2434 JvmtiExport::post_garbage_collection_start(); | |
| 2435 } | |
| 2436 | |
| 2437 // if "full" is false it probably means this is a scavenge of the young | |
| 2438 // generation. However it could turn out that a "full" GC is required | |
| 2439 // so we record the number of collections so that it can be checked in | |
| 2440 // the destructor. | |
| 2441 if (!_full) { | |
| 342 | 2442 _invocation_count = Universe::heap()->total_full_collections(); |
| 0 | 2443 } |
| 2444 | |
| 2445 // Do clean up tasks that need to be done at a safepoint | |
| 2446 JvmtiEnvBase::check_for_periodic_clean_up(); | |
| 2447 } | |
| 2448 | |
| 2449 JvmtiGCMarker::~JvmtiGCMarker() { | |
| 2450 // if there aren't any JVMTI environments then nothing to do | |
| 2451 if (!JvmtiEnv::environments_might_exist()) { | |
| 2452 return; | |
| 2453 } | |
| 2454 | |
| 2455 // JVMTI notify gc finish | |
| 2456 if (JvmtiExport::should_post_garbage_collection_finish()) { | |
| 2457 JvmtiExport::post_garbage_collection_finish(); | |
| 2458 } | |
| 2459 | |
| 2460 // we might have initially started out doing a scavenge of the young | |
| 2461 // generation but could have ended up doing a "full" GC - check the | |
| 2462 // GC count to see. | |
| 2463 if (!_full) { | |
| 342 | 2464 _full = (_invocation_count != Universe::heap()->total_full_collections()); |
| 0 | 2465 } |
| 2466 | |
| 2467 // Full collection probably means the perm generation has been GC'ed | |
| 2468 // so we clear the breakpoint cache. | |
| 2469 if (_full) { | |
| 2470 JvmtiCurrentBreakpoints::gc_epilogue(); | |
| 2471 } | |
| 2472 | |
| 2473 // Notify heap/object tagging support | |
| 2474 JvmtiTagMap::gc_epilogue(_full); | |
| 2475 } | |
| 2476 #endif // JVMTI_KERNEL |