Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEventController.cpp @ 20465:7301840ea20e
8023461: Thread holding lock at safepoint that vm can block on: MethodCompileQueue_lock
Reviewed-by: kvn, iveresov
| author | vlivanov |
|---|---|
| date | Tue, 11 Mar 2014 15:06:34 +0400 |
| parents | 78bbf4d43a14 |
| children | 52b4284cb496 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "interpreter/interpreter.hpp" | |
| 27 #include "jvmtifiles/jvmtiEnv.hpp" | |
| 28 #include "memory/resourceArea.hpp" | |
| 29 #include "prims/jvmtiEventController.hpp" | |
| 30 #include "prims/jvmtiEventController.inline.hpp" | |
| 31 #include "prims/jvmtiExport.hpp" | |
| 32 #include "prims/jvmtiImpl.hpp" | |
| 33 #include "prims/jvmtiThreadState.inline.hpp" | |
| 34 #include "runtime/frame.hpp" | |
| 35 #include "runtime/thread.hpp" | |
| 36 #include "runtime/vframe.hpp" | |
| 37 #include "runtime/vframe_hp.hpp" | |
| 38 #include "runtime/vmThread.hpp" | |
| 39 #include "runtime/vm_operations.hpp" | |
| 0 | 40 |
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41 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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42 |
| 0 | 43 #ifdef JVMTI_TRACE |
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44 #define EC_TRACE(out) do { \ |
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45 if (JvmtiTrace::trace_event_controller()) { \ |
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46 SafeResourceMark rm; \ |
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47 tty->print_cr out; \ |
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48 } \ |
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49 } while (0) |
| 0 | 50 #else |
| 51 #define EC_TRACE(out) | |
| 52 #endif /*JVMTI_TRACE */ | |
| 53 | |
| 54 // bits for standard events | |
| 55 | |
| 56 static const jlong SINGLE_STEP_BIT = (((jlong)1) << (JVMTI_EVENT_SINGLE_STEP - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 57 static const jlong FRAME_POP_BIT = (((jlong)1) << (JVMTI_EVENT_FRAME_POP - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 58 static const jlong BREAKPOINT_BIT = (((jlong)1) << (JVMTI_EVENT_BREAKPOINT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 59 static const jlong FIELD_ACCESS_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_ACCESS - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 60 static const jlong FIELD_MODIFICATION_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_MODIFICATION - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 61 static const jlong METHOD_ENTRY_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_ENTRY - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 62 static const jlong METHOD_EXIT_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_EXIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 63 static const jlong CLASS_FILE_LOAD_HOOK_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 64 static const jlong NATIVE_METHOD_BIND_BIT = (((jlong)1) << (JVMTI_EVENT_NATIVE_METHOD_BIND - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 65 static const jlong VM_START_BIT = (((jlong)1) << (JVMTI_EVENT_VM_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 66 static const jlong VM_INIT_BIT = (((jlong)1) << (JVMTI_EVENT_VM_INIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 67 static const jlong VM_DEATH_BIT = (((jlong)1) << (JVMTI_EVENT_VM_DEATH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 68 static const jlong CLASS_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 69 static const jlong CLASS_PREPARE_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_PREPARE - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 70 static const jlong THREAD_START_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 71 static const jlong THREAD_END_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_END - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 72 static const jlong EXCEPTION_THROW_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 73 static const jlong EXCEPTION_CATCH_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION_CATCH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 74 static const jlong MONITOR_CONTENDED_ENTER_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTER - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 75 static const jlong MONITOR_CONTENDED_ENTERED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 76 static const jlong MONITOR_WAIT_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 77 static const jlong MONITOR_WAITED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAITED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 78 static const jlong DYNAMIC_CODE_GENERATED_BIT = (((jlong)1) << (JVMTI_EVENT_DYNAMIC_CODE_GENERATED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 79 static const jlong DATA_DUMP_BIT = (((jlong)1) << (JVMTI_EVENT_DATA_DUMP_REQUEST - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 80 static const jlong COMPILED_METHOD_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 81 static const jlong COMPILED_METHOD_UNLOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 82 static const jlong GARBAGE_COLLECTION_START_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 83 static const jlong GARBAGE_COLLECTION_FINISH_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 84 static const jlong OBJECT_FREE_BIT = (((jlong)1) << (JVMTI_EVENT_OBJECT_FREE - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 85 static const jlong RESOURCE_EXHAUSTED_BIT = (((jlong)1) << (JVMTI_EVENT_RESOURCE_EXHAUSTED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 86 static const jlong VM_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_VM_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 87 | |
| 88 // bits for extension events | |
| 89 static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
| 90 | |
| 91 | |
| 92 static const jlong MONITOR_BITS = MONITOR_CONTENDED_ENTER_BIT | MONITOR_CONTENDED_ENTERED_BIT | | |
| 93 MONITOR_WAIT_BIT | MONITOR_WAITED_BIT; | |
| 94 static const jlong EXCEPTION_BITS = EXCEPTION_THROW_BIT | EXCEPTION_CATCH_BIT; | |
| 95 static const jlong INTERP_EVENT_BITS = SINGLE_STEP_BIT | METHOD_ENTRY_BIT | METHOD_EXIT_BIT | | |
| 96 FRAME_POP_BIT | FIELD_ACCESS_BIT | FIELD_MODIFICATION_BIT; | |
| 97 static const jlong THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS | | |
| 98 BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT; | |
| 99 static const jlong NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT; | |
| 100 static const jlong EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT | | |
| 101 VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT | | |
| 102 THREAD_START_BIT | THREAD_END_BIT | | |
| 103 DYNAMIC_CODE_GENERATED_BIT; | |
| 104 static const jlong GLOBAL_EVENT_BITS = ~THREAD_FILTERED_EVENT_BITS; | |
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105 static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT; |
| 0 | 106 |
| 107 /////////////////////////////////////////////////////////////// | |
| 108 // | |
| 109 // JvmtiEventEnabled | |
| 110 // | |
| 111 | |
| 112 JvmtiEventEnabled::JvmtiEventEnabled() { | |
| 113 clear(); | |
| 114 } | |
| 115 | |
| 116 | |
| 117 void JvmtiEventEnabled::clear() { | |
| 118 _enabled_bits = 0; | |
| 119 #ifndef PRODUCT | |
| 120 _init_guard = JEE_INIT_GUARD; | |
| 121 #endif | |
| 122 } | |
| 123 | |
| 124 void JvmtiEventEnabled::set_enabled(jvmtiEvent event_type, bool enabled) { | |
| 125 jlong bits = get_bits(); | |
| 126 jlong mask = bit_for(event_type); | |
| 127 if (enabled) { | |
| 128 bits |= mask; | |
| 129 } else { | |
| 130 bits &= ~mask; | |
| 131 } | |
| 132 set_bits(bits); | |
| 133 } | |
| 134 | |
| 135 | |
| 136 /////////////////////////////////////////////////////////////// | |
| 137 // | |
| 138 // JvmtiEnvThreadEventEnable | |
| 139 // | |
| 140 | |
| 141 JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() { | |
| 142 _event_user_enabled.clear(); | |
| 143 _event_enabled.clear(); | |
| 144 } | |
| 145 | |
| 146 | |
| 147 JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() { | |
| 148 _event_user_enabled.clear(); | |
| 149 _event_enabled.clear(); | |
| 150 } | |
| 151 | |
| 152 | |
| 153 /////////////////////////////////////////////////////////////// | |
| 154 // | |
| 155 // JvmtiThreadEventEnable | |
| 156 // | |
| 157 | |
| 158 JvmtiThreadEventEnable::JvmtiThreadEventEnable() { | |
| 159 _event_enabled.clear(); | |
| 160 } | |
| 161 | |
| 162 | |
| 163 JvmtiThreadEventEnable::~JvmtiThreadEventEnable() { | |
| 164 _event_enabled.clear(); | |
| 165 } | |
| 166 | |
| 167 | |
| 168 /////////////////////////////////////////////////////////////// | |
| 169 // | |
| 170 // JvmtiEnvEventEnable | |
| 171 // | |
| 172 | |
| 173 JvmtiEnvEventEnable::JvmtiEnvEventEnable() { | |
| 174 _event_user_enabled.clear(); | |
| 175 _event_callback_enabled.clear(); | |
| 176 _event_enabled.clear(); | |
| 177 } | |
| 178 | |
| 179 | |
| 180 JvmtiEnvEventEnable::~JvmtiEnvEventEnable() { | |
| 181 _event_user_enabled.clear(); | |
| 182 _event_callback_enabled.clear(); | |
| 183 _event_enabled.clear(); | |
| 184 } | |
| 185 | |
| 186 | |
| 187 /////////////////////////////////////////////////////////////// | |
| 188 // | |
| 189 // VM_EnterInterpOnlyMode | |
| 190 // | |
| 191 | |
| 192 class VM_EnterInterpOnlyMode : public VM_Operation { | |
| 193 private: | |
| 194 JvmtiThreadState *_state; | |
| 195 | |
| 196 public: | |
| 197 VM_EnterInterpOnlyMode(JvmtiThreadState *state); | |
| 198 | |
| 199 bool allow_nested_vm_operations() const { return true; } | |
| 200 VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; } | |
| 201 void doit(); | |
| 202 | |
| 203 // to do: this same function is in jvmtiImpl - should be in one place | |
| 204 bool can_be_deoptimized(vframe* vf) { | |
| 205 return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized()); | |
| 206 } | |
| 207 }; | |
| 208 | |
| 209 VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state) | |
| 210 : _state(state) | |
| 211 { | |
| 212 } | |
| 213 | |
| 214 | |
| 215 void VM_EnterInterpOnlyMode::doit() { | |
| 216 // Set up the current stack depth for later tracking | |
| 217 _state->invalidate_cur_stack_depth(); | |
| 218 | |
| 219 _state->enter_interp_only_mode(); | |
| 220 | |
| 221 JavaThread *thread = _state->get_thread(); | |
| 222 if (thread->has_last_Java_frame()) { | |
| 223 // If running in fullspeed mode, single stepping is implemented | |
| 224 // as follows: first, the interpreter does not dispatch to | |
| 225 // compiled code for threads that have single stepping enabled; | |
| 226 // second, we deoptimize all methods on the thread's stack when | |
| 227 // interpreted-only mode is enabled the first time for a given | |
| 228 // thread (nothing to do if no Java frames yet). | |
| 229 int num_marked = 0; | |
| 230 ResourceMark resMark; | |
| 231 RegisterMap rm(thread, false); | |
| 232 for (vframe* vf = thread->last_java_vframe(&rm); vf; vf = vf->sender()) { | |
| 233 if (can_be_deoptimized(vf)) { | |
| 234 ((compiledVFrame*) vf)->code()->mark_for_deoptimization(); | |
| 235 ++num_marked; | |
| 236 } | |
| 237 } | |
| 238 if (num_marked > 0) { | |
| 239 VM_Deoptimize op; | |
| 240 VMThread::execute(&op); | |
| 241 } | |
| 242 } | |
| 243 } | |
| 244 | |
| 245 | |
| 246 /////////////////////////////////////////////////////////////// | |
| 247 // | |
| 248 // VM_ChangeSingleStep | |
| 249 // | |
| 250 | |
| 251 class VM_ChangeSingleStep : public VM_Operation { | |
| 252 private: | |
| 253 bool _on; | |
| 254 | |
| 255 public: | |
| 256 VM_ChangeSingleStep(bool on); | |
| 257 VMOp_Type type() const { return VMOp_ChangeSingleStep; } | |
| 258 bool allow_nested_vm_operations() const { return true; } | |
| 259 void doit(); // method definition is after definition of JvmtiEventControllerPrivate because of scoping | |
| 260 }; | |
| 261 | |
| 262 | |
| 263 VM_ChangeSingleStep::VM_ChangeSingleStep(bool on) | |
| 264 : _on(on != 0) | |
| 265 { | |
| 266 } | |
| 267 | |
| 268 | |
| 269 | |
| 270 | |
| 271 /////////////////////////////////////////////////////////////// | |
| 272 // | |
| 273 // JvmtiEventControllerPrivate | |
| 274 // | |
| 275 // Private internal implementation methods for JvmtiEventController. | |
| 276 // | |
| 277 // These methods are thread safe either because they are called | |
| 278 // in early VM initialization which is single threaded, or they | |
| 279 // hold the JvmtiThreadState_lock. | |
| 280 // | |
| 281 | |
| 282 class JvmtiEventControllerPrivate : public AllStatic { | |
| 283 static bool _initialized; | |
| 284 public: | |
| 285 static void set_should_post_single_step(bool on); | |
| 286 static void enter_interp_only_mode(JvmtiThreadState *state); | |
| 287 static void leave_interp_only_mode(JvmtiThreadState *state); | |
| 288 static void recompute_enabled(); | |
| 289 static jlong recompute_env_enabled(JvmtiEnvBase* env); | |
| 290 static jlong recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state); | |
| 291 static jlong recompute_thread_enabled(JvmtiThreadState *state); | |
| 292 static void event_init(); | |
| 293 | |
| 294 static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
| 295 jvmtiEvent event_type, bool enabled); | |
| 296 static void set_event_callbacks(JvmtiEnvBase *env, | |
| 297 const jvmtiEventCallbacks* callbacks, | |
| 298 jint size_of_callbacks); | |
| 299 | |
| 300 static void set_extension_event_callback(JvmtiEnvBase *env, | |
| 301 jint extension_event_index, | |
| 302 jvmtiExtensionEvent callback); | |
| 303 | |
| 304 static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
| 305 static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
| 306 static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
| 307 static void change_field_watch(jvmtiEvent event_type, bool added); | |
| 308 | |
| 309 static void thread_started(JavaThread *thread); | |
| 310 static void thread_ended(JavaThread *thread); | |
| 311 | |
| 312 static void env_initialize(JvmtiEnvBase *env); | |
| 313 static void env_dispose(JvmtiEnvBase *env); | |
| 314 | |
| 315 static void vm_start(); | |
| 316 static void vm_init(); | |
| 317 static void vm_death(); | |
| 318 | |
| 319 static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed); | |
| 320 static void trace_changed(jlong now_enabled, jlong changed); | |
| 321 }; | |
| 322 | |
| 323 bool JvmtiEventControllerPrivate::_initialized = false; | |
| 324 | |
| 325 void JvmtiEventControllerPrivate::set_should_post_single_step(bool on) { | |
| 326 // we have permission to do this, VM op doesn't | |
| 327 JvmtiExport::set_should_post_single_step(on); | |
| 328 } | |
| 329 | |
| 330 | |
| 331 // This change must always be occur when at a safepoint. | |
| 332 // Being at a safepoint causes the interpreter to use the | |
| 333 // safepoint dispatch table which we overload to find single | |
| 334 // step points. Just to be sure that it has been set, we | |
| 335 // call notice_safepoints when turning on single stepping. | |
| 336 // When we leave our current safepoint, should_post_single_step | |
| 337 // will be checked by the interpreter, and the table kept | |
| 338 // or changed accordingly. | |
| 339 void VM_ChangeSingleStep::doit() { | |
| 340 JvmtiEventControllerPrivate::set_should_post_single_step(_on); | |
| 341 if (_on) { | |
| 342 Interpreter::notice_safepoints(); | |
| 343 } | |
| 344 } | |
| 345 | |
| 346 | |
| 347 void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) { | |
| 348 EC_TRACE(("JVMTI [%s] # Entering interpreter only mode", | |
| 349 JvmtiTrace::safe_get_thread_name(state->get_thread()))); | |
| 350 | |
| 351 VM_EnterInterpOnlyMode op(state); | |
| 352 VMThread::execute(&op); | |
| 353 } | |
| 354 | |
| 355 | |
| 356 void | |
| 357 JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) { | |
| 358 EC_TRACE(("JVMTI [%s] # Leaving interpreter only mode", | |
| 359 JvmtiTrace::safe_get_thread_name(state->get_thread()))); | |
| 360 state->leave_interp_only_mode(); | |
| 361 } | |
| 362 | |
| 363 | |
| 364 void | |
| 365 JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed) { | |
| 366 #ifdef JVMTI_TRACE | |
| 367 if (JvmtiTrace::trace_event_controller()) { | |
| 368 SafeResourceMark rm; | |
| 369 // traces standard events only | |
| 370 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
| 371 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
| 372 if (changed & bit) { | |
| 373 // it changed, print it | |
| 374 tty->print_cr("JVMTI [%s] # %s event %s", | |
| 375 JvmtiTrace::safe_get_thread_name(state->get_thread()), | |
| 376 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); | |
| 377 } | |
| 378 } | |
| 379 } | |
| 380 #endif /*JVMTI_TRACE */ | |
| 381 } | |
| 382 | |
| 383 | |
| 384 void | |
| 385 JvmtiEventControllerPrivate::trace_changed(jlong now_enabled, jlong changed) { | |
| 386 #ifdef JVMTI_TRACE | |
| 387 if (JvmtiTrace::trace_event_controller()) { | |
| 388 SafeResourceMark rm; | |
| 389 // traces standard events only | |
| 390 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
| 391 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
| 392 if (changed & bit) { | |
| 393 // it changed, print it | |
| 394 tty->print_cr("JVMTI [-] # %s event %s", | |
| 395 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); | |
| 396 } | |
| 397 } | |
| 398 } | |
| 399 #endif /*JVMTI_TRACE */ | |
| 400 } | |
| 401 | |
| 402 | |
| 403 // For the specified env: compute the currently truly enabled events | |
| 404 // set external state accordingly. | |
| 405 // Return value and set value must include all events. | |
| 406 // But outside this class, only non-thread-filtered events can be queried.. | |
| 407 jlong | |
| 408 JvmtiEventControllerPrivate::recompute_env_enabled(JvmtiEnvBase* env) { | |
| 409 jlong was_enabled = env->env_event_enable()->_event_enabled.get_bits(); | |
| 410 jlong now_enabled = | |
| 411 env->env_event_enable()->_event_callback_enabled.get_bits() & | |
| 412 env->env_event_enable()->_event_user_enabled.get_bits(); | |
| 413 | |
| 414 switch (JvmtiEnv::get_phase()) { | |
| 415 case JVMTI_PHASE_PRIMORDIAL: | |
| 416 case JVMTI_PHASE_ONLOAD: | |
| 417 // only these events allowed in primordial or onload phase | |
| 418 now_enabled &= (EARLY_EVENT_BITS & ~THREAD_FILTERED_EVENT_BITS); | |
| 419 break; | |
| 420 case JVMTI_PHASE_START: | |
| 421 // only these events allowed in start phase | |
| 422 now_enabled &= EARLY_EVENT_BITS; | |
| 423 break; | |
| 424 case JVMTI_PHASE_LIVE: | |
| 425 // all events allowed during live phase | |
| 426 break; | |
| 427 case JVMTI_PHASE_DEAD: | |
| 428 // no events allowed when dead | |
| 429 now_enabled = 0; | |
| 430 break; | |
| 431 default: | |
| 432 assert(false, "no other phases - sanity check"); | |
| 433 break; | |
| 434 } | |
| 435 | |
| 436 // will we really send these events to this env | |
| 437 env->env_event_enable()->_event_enabled.set_bits(now_enabled); | |
| 438 | |
| 439 trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS); | |
| 440 | |
| 441 return now_enabled; | |
| 442 } | |
| 443 | |
| 444 | |
| 445 // For the specified env and thread: compute the currently truly enabled events | |
| 446 // set external state accordingly. Only thread-filtered events are included. | |
| 447 jlong | |
| 448 JvmtiEventControllerPrivate::recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state) { | |
| 449 JvmtiEnv *env = ets->get_env(); | |
| 450 | |
| 451 jlong was_enabled = ets->event_enable()->_event_enabled.get_bits(); | |
| 452 jlong now_enabled = THREAD_FILTERED_EVENT_BITS & | |
| 453 env->env_event_enable()->_event_callback_enabled.get_bits() & | |
| 454 (env->env_event_enable()->_event_user_enabled.get_bits() | | |
| 455 ets->event_enable()->_event_user_enabled.get_bits()); | |
| 456 | |
| 457 // for frame pops and field watchs, computed enabled state | |
| 458 // is only true if an event has been requested | |
| 459 if (!ets->has_frame_pops()) { | |
| 460 now_enabled &= ~FRAME_POP_BIT; | |
| 461 } | |
| 462 if (*((int *)JvmtiExport::get_field_access_count_addr()) == 0) { | |
| 463 now_enabled &= ~FIELD_ACCESS_BIT; | |
| 464 } | |
| 465 if (*((int *)JvmtiExport::get_field_modification_count_addr()) == 0) { | |
| 466 now_enabled &= ~FIELD_MODIFICATION_BIT; | |
| 467 } | |
| 468 | |
| 469 switch (JvmtiEnv::get_phase()) { | |
| 470 case JVMTI_PHASE_DEAD: | |
| 471 // no events allowed when dead | |
| 472 now_enabled = 0; | |
| 473 break; | |
| 474 } | |
| 475 | |
| 476 // if anything changed do update | |
| 477 if (now_enabled != was_enabled) { | |
| 478 | |
| 479 // will we really send these events to this thread x env | |
| 480 ets->event_enable()->_event_enabled.set_bits(now_enabled); | |
| 481 | |
| 482 // If the enabled status of the single step or breakpoint events changed, | |
| 483 // the location status may need to change as well. | |
| 484 jlong changed = now_enabled ^ was_enabled; | |
| 485 if (changed & SINGLE_STEP_BIT) { | |
| 486 ets->reset_current_location(JVMTI_EVENT_SINGLE_STEP, (now_enabled & SINGLE_STEP_BIT) != 0); | |
| 487 } | |
| 488 if (changed & BREAKPOINT_BIT) { | |
| 489 ets->reset_current_location(JVMTI_EVENT_BREAKPOINT, (now_enabled & BREAKPOINT_BIT) != 0); | |
| 490 } | |
| 491 trace_changed(state, now_enabled, changed); | |
| 492 } | |
| 493 return now_enabled; | |
| 494 } | |
| 495 | |
| 496 | |
| 497 // For the specified thread: compute the currently truly enabled events | |
| 498 // set external state accordingly. Only thread-filtered events are included. | |
| 499 jlong | |
| 500 JvmtiEventControllerPrivate::recompute_thread_enabled(JvmtiThreadState *state) { | |
|
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501 if (state == NULL) { |
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502 // associated JavaThread is exiting |
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503 return (jlong)0; |
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504 } |
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505 |
| 0 | 506 jlong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits(); |
| 507 jlong any_env_enabled = 0; | |
| 508 | |
| 509 { | |
| 510 // This iteration will include JvmtiEnvThreadStates whoses environments | |
| 511 // have been disposed. These JvmtiEnvThreadStates must not be filtered | |
| 512 // as recompute must be called on them to disable their events, | |
| 513 JvmtiEnvThreadStateIterator it(state); | |
| 514 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
| 515 any_env_enabled |= recompute_env_thread_enabled(ets, state); | |
| 516 } | |
| 517 } | |
| 518 | |
| 519 if (any_env_enabled != was_any_env_enabled) { | |
| 520 // mark if event is truly enabled on this thread in any environment | |
| 521 state->thread_event_enable()->_event_enabled.set_bits(any_env_enabled); | |
| 522 | |
| 523 // compute interp_only mode | |
| 524 bool should_be_interp = (any_env_enabled & INTERP_EVENT_BITS) != 0; | |
| 525 bool is_now_interp = state->is_interp_only_mode(); | |
| 526 | |
| 527 if (should_be_interp != is_now_interp) { | |
| 528 if (should_be_interp) { | |
| 529 enter_interp_only_mode(state); | |
| 530 } else { | |
| 531 leave_interp_only_mode(state); | |
| 532 } | |
| 533 } | |
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534 |
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535 // update the JavaThread cached value for thread-specific should_post_on_exceptions value |
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536 bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0; |
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537 state->set_should_post_on_exceptions(should_post_on_exceptions); |
| 0 | 538 } |
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539 |
| 0 | 540 return any_env_enabled; |
| 541 } | |
| 542 | |
| 543 | |
| 544 // Compute truly enabled events - meaning if the event can and could be | |
| 545 // sent. An event is truly enabled if it is user enabled on the thread | |
| 546 // or globally user enabled, but only if there is a callback or event hook | |
| 547 // for it and, for field watch and frame pop, one has been set. | |
| 548 // Compute if truly enabled, per thread, per environment, per combination | |
| 549 // (thread x environment), and overall. These merges are true if any is true. | |
| 550 // True per thread if some environment has callback set and the event is globally | |
| 551 // enabled or enabled for this thread. | |
| 552 // True per environment if the callback is set and the event is globally | |
| 553 // enabled in this environment or enabled for any thread in this environment. | |
| 554 // True per combination if the environment has the callback set and the | |
| 555 // event is globally enabled in this environment or the event is enabled | |
| 556 // for this thread and environment. | |
| 557 // | |
| 558 // All states transitions dependent on these transitions are also handled here. | |
| 559 void | |
| 560 JvmtiEventControllerPrivate::recompute_enabled() { | |
| 561 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 562 | |
| 563 // event enabled for any thread in any environment | |
| 564 jlong was_any_env_thread_enabled = JvmtiEventController::_universal_global_event_enabled.get_bits(); | |
| 565 jlong any_env_thread_enabled = 0; | |
| 566 | |
| 567 EC_TRACE(("JVMTI [-] # recompute enabled - before %llx", was_any_env_thread_enabled)); | |
| 568 | |
| 569 // compute non-thread-filters events. | |
| 570 // This must be done separately from thread-filtered events, since some | |
| 571 // events can occur before any threads exist. | |
| 572 JvmtiEnvIterator it; | |
| 573 for (JvmtiEnvBase* env = it.first(); env != NULL; env = it.next(env)) { | |
| 574 any_env_thread_enabled |= recompute_env_enabled(env); | |
| 575 } | |
| 576 | |
| 577 // We need to create any missing jvmti_thread_state if there are globally set thread | |
| 578 // filtered events and there weren't last time | |
| 579 if ( (any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) != 0 && | |
| 580 (was_any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) == 0) { | |
| 581 assert(JvmtiEnv::is_vm_live() || (JvmtiEnv::get_phase()==JVMTI_PHASE_START), | |
| 582 "thread filtered events should not be enabled when VM not in start or live phase"); | |
| 583 { | |
| 584 MutexLocker mu(Threads_lock); //hold the Threads_lock for the iteration | |
| 585 for (JavaThread *tp = Threads::first(); tp != NULL; tp = tp->next()) { | |
|
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586 // state_for_while_locked() makes tp->is_exiting() check |
| 0 | 587 JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing |
| 588 } | |
| 589 }// release Threads_lock | |
| 590 } | |
| 591 | |
| 592 // compute and set thread-filtered events | |
| 593 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { | |
| 594 any_env_thread_enabled |= recompute_thread_enabled(state); | |
| 595 } | |
| 596 | |
| 597 // set universal state (across all envs and threads) | |
| 598 jlong delta = any_env_thread_enabled ^ was_any_env_thread_enabled; | |
| 599 if (delta != 0) { | |
| 600 JvmtiExport::set_should_post_field_access((any_env_thread_enabled & FIELD_ACCESS_BIT) != 0); | |
| 601 JvmtiExport::set_should_post_field_modification((any_env_thread_enabled & FIELD_MODIFICATION_BIT) != 0); | |
| 602 JvmtiExport::set_should_post_class_load((any_env_thread_enabled & CLASS_LOAD_BIT) != 0); | |
| 603 JvmtiExport::set_should_post_class_file_load_hook((any_env_thread_enabled & CLASS_FILE_LOAD_HOOK_BIT) != 0); | |
| 604 JvmtiExport::set_should_post_native_method_bind((any_env_thread_enabled & NATIVE_METHOD_BIND_BIT) != 0); | |
| 605 JvmtiExport::set_should_post_dynamic_code_generated((any_env_thread_enabled & DYNAMIC_CODE_GENERATED_BIT) != 0); | |
| 606 JvmtiExport::set_should_post_data_dump((any_env_thread_enabled & DATA_DUMP_BIT) != 0); | |
| 607 JvmtiExport::set_should_post_class_prepare((any_env_thread_enabled & CLASS_PREPARE_BIT) != 0); | |
| 608 JvmtiExport::set_should_post_class_unload((any_env_thread_enabled & CLASS_UNLOAD_BIT) != 0); | |
| 609 JvmtiExport::set_should_post_monitor_contended_enter((any_env_thread_enabled & MONITOR_CONTENDED_ENTER_BIT) != 0); | |
| 610 JvmtiExport::set_should_post_monitor_contended_entered((any_env_thread_enabled & MONITOR_CONTENDED_ENTERED_BIT) != 0); | |
| 611 JvmtiExport::set_should_post_monitor_wait((any_env_thread_enabled & MONITOR_WAIT_BIT) != 0); | |
| 612 JvmtiExport::set_should_post_monitor_waited((any_env_thread_enabled & MONITOR_WAITED_BIT) != 0); | |
| 613 JvmtiExport::set_should_post_garbage_collection_start((any_env_thread_enabled & GARBAGE_COLLECTION_START_BIT) != 0); | |
| 614 JvmtiExport::set_should_post_garbage_collection_finish((any_env_thread_enabled & GARBAGE_COLLECTION_FINISH_BIT) != 0); | |
| 615 JvmtiExport::set_should_post_object_free((any_env_thread_enabled & OBJECT_FREE_BIT) != 0); | |
| 616 JvmtiExport::set_should_post_resource_exhausted((any_env_thread_enabled & RESOURCE_EXHAUSTED_BIT) != 0); | |
| 617 JvmtiExport::set_should_post_compiled_method_load((any_env_thread_enabled & COMPILED_METHOD_LOAD_BIT) != 0); | |
| 618 JvmtiExport::set_should_post_compiled_method_unload((any_env_thread_enabled & COMPILED_METHOD_UNLOAD_BIT) != 0); | |
| 619 JvmtiExport::set_should_post_vm_object_alloc((any_env_thread_enabled & VM_OBJECT_ALLOC_BIT) != 0); | |
| 620 | |
| 621 // need this if we want thread events or we need them to init data | |
| 622 JvmtiExport::set_should_post_thread_life((any_env_thread_enabled & NEED_THREAD_LIFE_EVENTS) != 0); | |
| 623 | |
| 624 // If single stepping is turned on or off, execute the VM op to change it. | |
| 625 if (delta & SINGLE_STEP_BIT) { | |
| 626 switch (JvmtiEnv::get_phase()) { | |
| 627 case JVMTI_PHASE_DEAD: | |
| 628 // If the VM is dying we can't execute VM ops | |
| 629 break; | |
| 630 case JVMTI_PHASE_LIVE: { | |
| 631 VM_ChangeSingleStep op((any_env_thread_enabled & SINGLE_STEP_BIT) != 0); | |
| 632 VMThread::execute(&op); | |
| 633 break; | |
| 634 } | |
| 635 default: | |
| 636 assert(false, "should never come here before live phase"); | |
| 637 break; | |
| 638 } | |
| 639 } | |
| 640 | |
| 641 // set global truly enabled, that is, any thread in any environment | |
| 642 JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled); | |
|
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643 |
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644 // set global should_post_on_exceptions |
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645 JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0); |
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646 |
| 0 | 647 } |
| 648 | |
| 649 EC_TRACE(("JVMTI [-] # recompute enabled - after %llx", any_env_thread_enabled)); | |
| 650 } | |
| 651 | |
| 652 | |
| 653 void | |
| 654 JvmtiEventControllerPrivate::thread_started(JavaThread *thread) { | |
| 655 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
| 656 assert(thread == Thread::current(), "must be current thread"); | |
| 657 assert(JvmtiEnvBase::environments_might_exist(), "to enter event controller, JVM TI environments must exist"); | |
| 658 | |
| 659 EC_TRACE(("JVMTI [%s] # thread started", JvmtiTrace::safe_get_thread_name(thread))); | |
| 660 | |
| 661 // if we have any thread filtered events globally enabled, create/update the thread state | |
| 662 if ((JvmtiEventController::_universal_global_event_enabled.get_bits() & THREAD_FILTERED_EVENT_BITS) != 0) { | |
| 663 MutexLocker mu(JvmtiThreadState_lock); | |
| 664 // create the thread state if missing | |
| 665 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); | |
| 666 if (state != NULL) { // skip threads with no JVMTI thread state | |
| 667 recompute_thread_enabled(state); | |
| 668 } | |
| 669 } | |
| 670 } | |
| 671 | |
| 672 | |
| 673 void | |
| 674 JvmtiEventControllerPrivate::thread_ended(JavaThread *thread) { | |
| 675 // Removes the JvmtiThreadState associated with the specified thread. | |
| 676 // May be called after all environments have been disposed. | |
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677 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); |
| 0 | 678 |
| 679 EC_TRACE(("JVMTI [%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread))); | |
| 680 | |
| 681 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
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682 assert(state != NULL, "else why are we here?"); |
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683 delete state; |
| 0 | 684 } |
| 685 | |
| 686 void JvmtiEventControllerPrivate::set_event_callbacks(JvmtiEnvBase *env, | |
| 687 const jvmtiEventCallbacks* callbacks, | |
| 688 jint size_of_callbacks) { | |
| 689 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 690 EC_TRACE(("JVMTI [*] # set event callbacks")); | |
| 691 | |
| 692 env->set_event_callbacks(callbacks, size_of_callbacks); | |
| 693 jlong enabled_bits = 0; | |
| 694 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
| 695 jvmtiEvent evt_t = (jvmtiEvent)ei; | |
| 696 if (env->has_callback(evt_t)) { | |
| 697 enabled_bits |= JvmtiEventEnabled::bit_for(evt_t); | |
| 698 } | |
| 699 } | |
| 700 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); | |
| 701 recompute_enabled(); | |
| 702 } | |
| 703 | |
| 704 void | |
| 705 JvmtiEventControllerPrivate::set_extension_event_callback(JvmtiEnvBase *env, | |
| 706 jint extension_event_index, | |
| 707 jvmtiExtensionEvent callback) | |
| 708 { | |
| 709 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 710 EC_TRACE(("JVMTI [*] # set extension event callback")); | |
| 711 | |
| 712 // extension events are allocated below JVMTI_MIN_EVENT_TYPE_VAL | |
| 713 assert(extension_event_index >= (jint)EXT_MIN_EVENT_TYPE_VAL && | |
| 714 extension_event_index <= (jint)EXT_MAX_EVENT_TYPE_VAL, "sanity check"); | |
| 715 | |
| 716 | |
| 717 // As the bits for both standard (jvmtiEvent) and extension | |
| 718 // (jvmtiExtEvents) are stored in the same word we cast here to | |
| 719 // jvmtiEvent to set/clear the bit for this extension event. | |
| 720 jvmtiEvent event_type = (jvmtiEvent)extension_event_index; | |
| 721 | |
| 722 // Prevent a possible race condition where events are re-enabled by a call to | |
| 723 // set event callbacks, where the DisposeEnvironment occurs after the boiler-plate | |
| 724 // environment check and before the lock is acquired. | |
| 725 // We can safely do the is_valid check now, as JvmtiThreadState_lock is held. | |
| 726 bool enabling = (callback != NULL) && (env->is_valid()); | |
| 727 env->env_event_enable()->set_user_enabled(event_type, enabling); | |
| 728 | |
| 729 // update the callback | |
| 730 jvmtiExtEventCallbacks* ext_callbacks = env->ext_callbacks(); | |
| 731 switch (extension_event_index) { | |
| 732 case EXT_EVENT_CLASS_UNLOAD : | |
| 733 ext_callbacks->ClassUnload = callback; | |
| 734 break; | |
| 735 default: | |
| 736 ShouldNotReachHere(); | |
| 737 } | |
| 738 | |
| 739 // update the callback enable/disable bit | |
| 740 jlong enabled_bits = env->env_event_enable()->_event_callback_enabled.get_bits(); | |
| 741 jlong bit_for = JvmtiEventEnabled::bit_for(event_type); | |
| 742 if (enabling) { | |
| 743 enabled_bits |= bit_for; | |
| 744 } else { | |
| 745 enabled_bits &= ~bit_for; | |
| 746 } | |
| 747 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); | |
| 748 | |
| 749 recompute_enabled(); | |
| 750 } | |
| 751 | |
| 752 | |
| 753 void | |
| 754 JvmtiEventControllerPrivate::env_initialize(JvmtiEnvBase *env) { | |
| 755 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 756 EC_TRACE(("JVMTI [*] # env initialize")); | |
| 757 | |
| 758 if (JvmtiEnvBase::is_vm_live()) { | |
| 759 // if we didn't initialize event info already (this is a late | |
| 760 // launched environment), do it now. | |
| 761 event_init(); | |
| 762 } | |
| 763 | |
| 764 env->initialize(); | |
| 765 | |
| 766 // add the JvmtiEnvThreadState to each JvmtiThreadState | |
| 767 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { | |
| 768 state->add_env(env); | |
| 769 assert((JvmtiEnv*)(state->env_thread_state(env)->get_env()) == env, "sanity check"); | |
| 770 } | |
| 771 JvmtiEventControllerPrivate::recompute_enabled(); | |
| 772 } | |
| 773 | |
| 774 | |
| 775 void | |
| 776 JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) { | |
| 777 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 778 EC_TRACE(("JVMTI [*] # env dispose")); | |
| 779 | |
| 780 // Before the environment is marked disposed, disable all events on this | |
| 781 // environment (by zapping the callbacks). As a result, the disposed | |
| 782 // environment will not call event handlers. | |
| 783 set_event_callbacks(env, NULL, 0); | |
| 784 for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL; | |
| 785 extension_event_index <= EXT_MAX_EVENT_TYPE_VAL; | |
| 786 ++extension_event_index) { | |
| 787 set_extension_event_callback(env, extension_event_index, NULL); | |
| 788 } | |
| 789 | |
| 790 // Let the environment finish disposing itself. | |
| 791 env->env_dispose(); | |
| 792 } | |
| 793 | |
| 794 | |
| 795 void | |
| 796 JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
| 797 jvmtiEvent event_type, bool enabled) { | |
| 798 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 799 | |
| 800 EC_TRACE(("JVMTI [%s] # user %s event %s", | |
| 801 thread==NULL? "ALL": JvmtiTrace::safe_get_thread_name(thread), | |
| 802 enabled? "enabled" : "disabled", JvmtiTrace::event_name(event_type))); | |
| 803 | |
| 804 if (thread == NULL) { | |
| 805 env->env_event_enable()->set_user_enabled(event_type, enabled); | |
| 806 } else { | |
| 807 // create the thread state (if it didn't exist before) | |
| 808 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); | |
| 809 if (state != NULL) { | |
| 810 state->env_thread_state(env)->event_enable()->set_user_enabled(event_type, enabled); | |
| 811 } | |
| 812 } | |
| 813 recompute_enabled(); | |
| 814 } | |
| 815 | |
| 816 | |
| 817 void | |
| 818 JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
| 819 EC_TRACE(("JVMTI [%s] # set frame pop - frame=%d", | |
| 820 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
| 821 fpop.frame_number() )); | |
| 822 | |
| 823 ets->get_frame_pops()->set(fpop); | |
| 824 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
| 825 } | |
| 826 | |
| 827 | |
| 828 void | |
| 829 JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
| 830 EC_TRACE(("JVMTI [%s] # clear frame pop - frame=%d", | |
| 831 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
| 832 fpop.frame_number() )); | |
| 833 | |
| 834 ets->get_frame_pops()->clear(fpop); | |
| 835 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
| 836 } | |
| 837 | |
| 838 | |
| 839 void | |
| 840 JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
| 841 int cleared_cnt = ets->get_frame_pops()->clear_to(fpop); | |
| 842 | |
| 843 EC_TRACE(("JVMTI [%s] # clear to frame pop - frame=%d, count=%d", | |
| 844 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
| 845 fpop.frame_number(), | |
| 846 cleared_cnt )); | |
| 847 | |
| 848 if (cleared_cnt > 0) { | |
| 849 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
| 850 } | |
| 851 } | |
| 852 | |
| 853 void | |
| 854 JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) { | |
| 855 int *count_addr; | |
| 856 | |
| 857 switch (event_type) { | |
| 858 case JVMTI_EVENT_FIELD_MODIFICATION: | |
| 859 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
| 860 break; | |
| 861 case JVMTI_EVENT_FIELD_ACCESS: | |
| 862 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
| 863 break; | |
| 864 default: | |
| 865 assert(false, "incorrect event"); | |
| 866 return; | |
| 867 } | |
| 868 | |
| 869 EC_TRACE(("JVMTI [-] # change field watch - %s %s count=%d", | |
| 870 event_type==JVMTI_EVENT_FIELD_MODIFICATION? "modification" : "access", | |
| 871 added? "add" : "remove", | |
| 872 *count_addr)); | |
| 873 | |
| 874 if (added) { | |
| 875 (*count_addr)++; | |
| 876 if (*count_addr == 1) { | |
| 877 recompute_enabled(); | |
| 878 } | |
| 879 } else { | |
| 880 if (*count_addr > 0) { | |
| 881 (*count_addr)--; | |
| 882 if (*count_addr == 0) { | |
| 883 recompute_enabled(); | |
| 884 } | |
| 885 } else { | |
| 886 assert(false, "field watch out of phase"); | |
| 887 } | |
| 888 } | |
| 889 } | |
| 890 | |
| 891 void | |
| 892 JvmtiEventControllerPrivate::event_init() { | |
| 893 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); | |
| 894 | |
| 895 if (_initialized) { | |
| 896 return; | |
| 897 } | |
| 898 | |
| 899 EC_TRACE(("JVMTI [-] # VM live")); | |
| 900 | |
| 901 #ifdef ASSERT | |
| 902 // check that our idea and the spec's idea of threaded events match | |
| 903 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
| 904 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
| 905 assert(((THREAD_FILTERED_EVENT_BITS & bit) != 0) == JvmtiUtil::event_threaded(ei), | |
| 906 "thread filtered event list does not match"); | |
| 907 } | |
| 908 #endif | |
| 909 | |
| 910 _initialized = true; | |
| 911 } | |
| 912 | |
| 913 void | |
| 914 JvmtiEventControllerPrivate::vm_start() { | |
| 915 // some events are now able to be enabled (phase has changed) | |
| 916 JvmtiEventControllerPrivate::recompute_enabled(); | |
| 917 } | |
| 918 | |
| 919 | |
| 920 void | |
| 921 JvmtiEventControllerPrivate::vm_init() { | |
| 922 event_init(); | |
| 923 | |
| 924 // all the events are now able to be enabled (phase has changed) | |
| 925 JvmtiEventControllerPrivate::recompute_enabled(); | |
| 926 } | |
| 927 | |
| 928 | |
| 929 void | |
| 930 JvmtiEventControllerPrivate::vm_death() { | |
| 931 // events are disabled (phase has changed) | |
| 932 JvmtiEventControllerPrivate::recompute_enabled(); | |
| 933 } | |
| 934 | |
| 935 | |
| 936 /////////////////////////////////////////////////////////////// | |
| 937 // | |
| 938 // JvmtiEventController | |
| 939 // | |
| 940 | |
| 941 JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled; | |
| 942 | |
| 943 bool | |
| 944 JvmtiEventController::is_global_event(jvmtiEvent event_type) { | |
| 945 assert(is_valid_event_type(event_type), "invalid event type"); | |
| 946 jlong bit_for = ((jlong)1) << (event_type - TOTAL_MIN_EVENT_TYPE_VAL); | |
| 947 return((bit_for & GLOBAL_EVENT_BITS)!=0); | |
| 948 } | |
| 949 | |
| 950 void | |
| 951 JvmtiEventController::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, jvmtiEvent event_type, bool enabled) { | |
| 952 if (Threads::number_of_threads() == 0) { | |
| 953 // during early VM start-up locks don't exist, but we are safely single threaded, | |
| 954 // call the functionality without holding the JvmtiThreadState_lock. | |
| 955 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); | |
| 956 } else { | |
| 957 MutexLocker mu(JvmtiThreadState_lock); | |
| 958 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); | |
| 959 } | |
| 960 } | |
| 961 | |
| 962 | |
| 963 void | |
| 964 JvmtiEventController::set_event_callbacks(JvmtiEnvBase *env, | |
| 965 const jvmtiEventCallbacks* callbacks, | |
| 966 jint size_of_callbacks) { | |
| 967 if (Threads::number_of_threads() == 0) { | |
| 968 // during early VM start-up locks don't exist, but we are safely single threaded, | |
| 969 // call the functionality without holding the JvmtiThreadState_lock. | |
| 970 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); | |
| 971 } else { | |
| 972 MutexLocker mu(JvmtiThreadState_lock); | |
| 973 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); | |
| 974 } | |
| 975 } | |
| 976 | |
| 977 void | |
| 978 JvmtiEventController::set_extension_event_callback(JvmtiEnvBase *env, | |
| 979 jint extension_event_index, | |
| 980 jvmtiExtensionEvent callback) { | |
| 981 if (Threads::number_of_threads() == 0) { | |
| 982 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); | |
| 983 } else { | |
| 984 MutexLocker mu(JvmtiThreadState_lock); | |
| 985 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); | |
| 986 } | |
| 987 } | |
| 988 | |
| 989 | |
| 990 | |
| 991 | |
| 992 void | |
| 993 JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
| 994 MutexLocker mu(JvmtiThreadState_lock); | |
| 995 JvmtiEventControllerPrivate::set_frame_pop(ets, fpop); | |
| 996 } | |
| 997 | |
| 998 | |
| 999 void | |
| 1000 JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
| 1001 MutexLocker mu(JvmtiThreadState_lock); | |
| 1002 JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop); | |
| 1003 } | |
| 1004 | |
| 1005 | |
| 1006 void | |
| 1007 JvmtiEventController::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
| 1008 MutexLocker mu(JvmtiThreadState_lock); | |
| 1009 JvmtiEventControllerPrivate::clear_to_frame_pop(ets, fpop); | |
| 1010 } | |
| 1011 | |
| 1012 void | |
| 1013 JvmtiEventController::change_field_watch(jvmtiEvent event_type, bool added) { | |
| 1014 MutexLocker mu(JvmtiThreadState_lock); | |
| 1015 JvmtiEventControllerPrivate::change_field_watch(event_type, added); | |
| 1016 } | |
| 1017 | |
| 1018 void | |
| 1019 JvmtiEventController::thread_started(JavaThread *thread) { | |
| 1020 // operates only on the current thread | |
| 1021 // JvmtiThreadState_lock grabbed only if needed. | |
| 1022 JvmtiEventControllerPrivate::thread_started(thread); | |
| 1023 } | |
| 1024 | |
| 1025 void | |
| 1026 JvmtiEventController::thread_ended(JavaThread *thread) { | |
| 1027 // operates only on the current thread | |
| 1028 // JvmtiThreadState_lock grabbed only if needed. | |
| 1029 JvmtiEventControllerPrivate::thread_ended(thread); | |
| 1030 } | |
| 1031 | |
| 1032 void | |
| 1033 JvmtiEventController::env_initialize(JvmtiEnvBase *env) { | |
| 1034 if (Threads::number_of_threads() == 0) { | |
| 1035 // during early VM start-up locks don't exist, but we are safely single threaded, | |
| 1036 // call the functionality without holding the JvmtiThreadState_lock. | |
| 1037 JvmtiEventControllerPrivate::env_initialize(env); | |
| 1038 } else { | |
| 1039 MutexLocker mu(JvmtiThreadState_lock); | |
| 1040 JvmtiEventControllerPrivate::env_initialize(env); | |
| 1041 } | |
| 1042 } | |
| 1043 | |
| 1044 void | |
| 1045 JvmtiEventController::env_dispose(JvmtiEnvBase *env) { | |
| 1046 if (Threads::number_of_threads() == 0) { | |
| 1047 // during early VM start-up locks don't exist, but we are safely single threaded, | |
| 1048 // call the functionality without holding the JvmtiThreadState_lock. | |
| 1049 JvmtiEventControllerPrivate::env_dispose(env); | |
| 1050 } else { | |
| 1051 MutexLocker mu(JvmtiThreadState_lock); | |
| 1052 JvmtiEventControllerPrivate::env_dispose(env); | |
| 1053 } | |
| 1054 } | |
| 1055 | |
| 1056 | |
| 1057 void | |
| 1058 JvmtiEventController::vm_start() { | |
| 1059 if (JvmtiEnvBase::environments_might_exist()) { | |
| 1060 MutexLocker mu(JvmtiThreadState_lock); | |
| 1061 JvmtiEventControllerPrivate::vm_start(); | |
| 1062 } | |
| 1063 } | |
| 1064 | |
| 1065 void | |
| 1066 JvmtiEventController::vm_init() { | |
| 1067 if (JvmtiEnvBase::environments_might_exist()) { | |
| 1068 MutexLocker mu(JvmtiThreadState_lock); | |
| 1069 JvmtiEventControllerPrivate::vm_init(); | |
| 1070 } | |
| 1071 } | |
| 1072 | |
| 1073 void | |
| 1074 JvmtiEventController::vm_death() { | |
| 1075 if (JvmtiEnvBase::environments_might_exist()) { | |
| 1076 MutexLocker mu(JvmtiThreadState_lock); | |
| 1077 JvmtiEventControllerPrivate::vm_death(); | |
| 1078 } | |
| 1079 } |