1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_RUNTIME_INSTRUMENTATION_H_ 18 #define ART_RUNTIME_INSTRUMENTATION_H_ 19 20 #include <stdint.h> 21 #include <list> 22 #include <map> 23 24 #include "atomic.h" 25 #include "instruction_set.h" 26 #include "base/macros.h" 27 #include "base/mutex.h" 28 #include "gc_root.h" 29 #include "object_callbacks.h" 30 31 namespace art { 32 namespace mirror { 33 class ArtField; 34 class ArtMethod; 35 class Class; 36 class Object; 37 class Throwable; 38 } // namespace mirror 39 union JValue; 40 class Thread; 41 class ThrowLocation; 42 43 namespace instrumentation { 44 45 // Interpreter handler tables. 46 enum InterpreterHandlerTable { 47 kMainHandlerTable = 0, // Main handler table: no suspend check, no instrumentation. 48 kAlternativeHandlerTable = 1, // Alternative handler table: suspend check and/or instrumentation 49 // enabled. 50 kNumHandlerTables 51 }; 52 53 // Instrumentation event listener API. Registered listeners will get the appropriate call back for 54 // the events they are listening for. The call backs supply the thread, method and dex_pc the event 55 // occurred upon. The thread may or may not be Thread::Current(). 56 struct InstrumentationListener { 57 InstrumentationListener() {} 58 virtual ~InstrumentationListener() {} 59 60 // Call-back for when a method is entered. 61 virtual void MethodEntered(Thread* thread, mirror::Object* this_object, 62 mirror::ArtMethod* method, 63 uint32_t dex_pc) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; 64 65 // Call-back for when a method is exited. 66 // TODO: its likely passing the return value would be useful, however, we may need to get and 67 // parse the shorty to determine what kind of register holds the result. 68 virtual void MethodExited(Thread* thread, mirror::Object* this_object, 69 mirror::ArtMethod* method, uint32_t dex_pc, 70 const JValue& return_value) 71 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; 72 73 // Call-back for when a method is popped due to an exception throw. A method will either cause a 74 // MethodExited call-back or a MethodUnwind call-back when its activation is removed. 75 virtual void MethodUnwind(Thread* thread, mirror::Object* this_object, 76 mirror::ArtMethod* method, uint32_t dex_pc) 77 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; 78 79 // Call-back for when the dex pc moves in a method. 80 virtual void DexPcMoved(Thread* thread, mirror::Object* this_object, 81 mirror::ArtMethod* method, uint32_t new_dex_pc) 82 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; 83 84 // Call-back for when we read from a field. 85 virtual void FieldRead(Thread* thread, mirror::Object* this_object, mirror::ArtMethod* method, 86 uint32_t dex_pc, mirror::ArtField* field) = 0; 87 88 // Call-back for when we write into a field. 89 virtual void FieldWritten(Thread* thread, mirror::Object* this_object, mirror::ArtMethod* method, 90 uint32_t dex_pc, mirror::ArtField* field, const JValue& field_value) = 0; 91 92 // Call-back when an exception is caught. 93 virtual void ExceptionCaught(Thread* thread, const ThrowLocation& throw_location, 94 mirror::ArtMethod* catch_method, uint32_t catch_dex_pc, 95 mirror::Throwable* exception_object) 96 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; 97 }; 98 99 // Instrumentation is a catch-all for when extra information is required from the runtime. The 100 // typical use for instrumentation is for profiling and debugging. Instrumentation may add stubs 101 // to method entry and exit, it may also force execution to be switched to the interpreter and 102 // trigger deoptimization. 103 class Instrumentation { 104 public: 105 enum InstrumentationEvent { 106 kMethodEntered = 1 << 0, 107 kMethodExited = 1 << 1, 108 kMethodUnwind = 1 << 2, 109 kDexPcMoved = 1 << 3, 110 kFieldRead = 1 << 4, 111 kFieldWritten = 1 << 5, 112 kExceptionCaught = 1 << 6, 113 }; 114 115 Instrumentation(); 116 117 // Add a listener to be notified of the masked together sent of instrumentation events. This 118 // suspend the runtime to install stubs. You are expected to hold the mutator lock as a proxy 119 // for saying you should have suspended all threads (installing stubs while threads are running 120 // will break). 121 void AddListener(InstrumentationListener* listener, uint32_t events) 122 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 123 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_); 124 125 // Removes a listener possibly removing instrumentation stubs. 126 void RemoveListener(InstrumentationListener* listener, uint32_t events) 127 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 128 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_); 129 130 // Deoptimization. 131 void EnableDeoptimization() 132 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 133 LOCKS_EXCLUDED(deoptimized_methods_lock_); 134 void DisableDeoptimization() 135 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 136 LOCKS_EXCLUDED(deoptimized_methods_lock_); 137 bool AreAllMethodsDeoptimized() const { 138 return interpreter_stubs_installed_; 139 } 140 bool ShouldNotifyMethodEnterExitEvents() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 141 142 // Executes everything with interpreter. 143 void DeoptimizeEverything() 144 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 145 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_); 146 147 // Executes everything with compiled code (or interpreter if there is no code). 148 void UndeoptimizeEverything() 149 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 150 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_); 151 152 // Deoptimize a method by forcing its execution with the interpreter. Nevertheless, a static 153 // method (except a class initializer) set to the resolution trampoline will be deoptimized only 154 // once its declaring class is initialized. 155 void Deoptimize(mirror::ArtMethod* method) 156 LOCKS_EXCLUDED(Locks::thread_list_lock_, deoptimized_methods_lock_) 157 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_); 158 159 // Undeoptimze the method by restoring its entrypoints. Nevertheless, a static method 160 // (except a class initializer) set to the resolution trampoline will be updated only once its 161 // declaring class is initialized. 162 void Undeoptimize(mirror::ArtMethod* method) 163 LOCKS_EXCLUDED(Locks::thread_list_lock_, deoptimized_methods_lock_) 164 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_); 165 166 bool IsDeoptimized(mirror::ArtMethod* method) 167 LOCKS_EXCLUDED(deoptimized_methods_lock_) 168 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 169 170 // Enable method tracing by installing instrumentation entry/exit stubs. 171 void EnableMethodTracing() 172 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 173 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_); 174 175 // Disable method tracing by uninstalling instrumentation entry/exit stubs. 176 void DisableMethodTracing() 177 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 178 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_); 179 180 InterpreterHandlerTable GetInterpreterHandlerTable() const 181 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 182 return interpreter_handler_table_; 183 } 184 185 void InstrumentQuickAllocEntryPoints() LOCKS_EXCLUDED(Locks::instrument_entrypoints_lock_); 186 void UninstrumentQuickAllocEntryPoints() LOCKS_EXCLUDED(Locks::instrument_entrypoints_lock_); 187 void InstrumentQuickAllocEntryPointsLocked() 188 EXCLUSIVE_LOCKS_REQUIRED(Locks::instrument_entrypoints_lock_) 189 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::runtime_shutdown_lock_); 190 void UninstrumentQuickAllocEntryPointsLocked() 191 EXCLUSIVE_LOCKS_REQUIRED(Locks::instrument_entrypoints_lock_) 192 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::runtime_shutdown_lock_); 193 void ResetQuickAllocEntryPoints() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_); 194 195 // Update the code of a method respecting any installed stubs. 196 void UpdateMethodsCode(mirror::ArtMethod* method, const void* quick_code, 197 const void* portable_code, bool have_portable_code) 198 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 199 200 // Get the quick code for the given method. More efficient than asking the class linker as it 201 // will short-cut to GetCode if instrumentation and static method resolution stubs aren't 202 // installed. 203 const void* GetQuickCodeFor(mirror::ArtMethod* method, size_t pointer_size) const 204 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 205 206 void ForceInterpretOnly() { 207 interpret_only_ = true; 208 forced_interpret_only_ = true; 209 } 210 211 // Called by ArtMethod::Invoke to determine dispatch mechanism. 212 bool InterpretOnly() const { 213 return interpret_only_; 214 } 215 216 bool IsForcedInterpretOnly() const { 217 return forced_interpret_only_; 218 } 219 220 bool ShouldPortableCodeDeoptimize() const { 221 return instrumentation_stubs_installed_; 222 } 223 224 bool AreExitStubsInstalled() const { 225 return instrumentation_stubs_installed_; 226 } 227 228 bool HasMethodEntryListeners() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 229 return have_method_entry_listeners_; 230 } 231 232 bool HasMethodExitListeners() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 233 return have_method_exit_listeners_; 234 } 235 236 bool HasDexPcListeners() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 237 return have_dex_pc_listeners_; 238 } 239 240 bool HasFieldReadListeners() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 241 return have_field_read_listeners_; 242 } 243 244 bool HasFieldWriteListeners() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 245 return have_field_write_listeners_; 246 } 247 248 bool HasExceptionCaughtListeners() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 249 return have_exception_caught_listeners_; 250 } 251 252 bool IsActive() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 253 return have_dex_pc_listeners_ || have_method_entry_listeners_ || have_method_exit_listeners_ || 254 have_field_read_listeners_ || have_field_write_listeners_ || 255 have_exception_caught_listeners_ || have_method_unwind_listeners_; 256 } 257 258 // Inform listeners that a method has been entered. A dex PC is provided as we may install 259 // listeners into executing code and get method enter events for methods already on the stack. 260 void MethodEnterEvent(Thread* thread, mirror::Object* this_object, 261 mirror::ArtMethod* method, uint32_t dex_pc) const 262 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 263 if (UNLIKELY(HasMethodEntryListeners())) { 264 MethodEnterEventImpl(thread, this_object, method, dex_pc); 265 } 266 } 267 268 // Inform listeners that a method has been exited. 269 void MethodExitEvent(Thread* thread, mirror::Object* this_object, 270 mirror::ArtMethod* method, uint32_t dex_pc, 271 const JValue& return_value) const 272 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 273 if (UNLIKELY(HasMethodExitListeners())) { 274 MethodExitEventImpl(thread, this_object, method, dex_pc, return_value); 275 } 276 } 277 278 // Inform listeners that a method has been exited due to an exception. 279 void MethodUnwindEvent(Thread* thread, mirror::Object* this_object, 280 mirror::ArtMethod* method, uint32_t dex_pc) const 281 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 282 283 // Inform listeners that the dex pc has moved (only supported by the interpreter). 284 void DexPcMovedEvent(Thread* thread, mirror::Object* this_object, 285 mirror::ArtMethod* method, uint32_t dex_pc) const 286 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 287 if (UNLIKELY(HasDexPcListeners())) { 288 DexPcMovedEventImpl(thread, this_object, method, dex_pc); 289 } 290 } 291 292 // Inform listeners that we read a field (only supported by the interpreter). 293 void FieldReadEvent(Thread* thread, mirror::Object* this_object, 294 mirror::ArtMethod* method, uint32_t dex_pc, 295 mirror::ArtField* field) const 296 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 297 if (UNLIKELY(HasFieldReadListeners())) { 298 FieldReadEventImpl(thread, this_object, method, dex_pc, field); 299 } 300 } 301 302 // Inform listeners that we write a field (only supported by the interpreter). 303 void FieldWriteEvent(Thread* thread, mirror::Object* this_object, 304 mirror::ArtMethod* method, uint32_t dex_pc, 305 mirror::ArtField* field, const JValue& field_value) const 306 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 307 if (UNLIKELY(HasFieldWriteListeners())) { 308 FieldWriteEventImpl(thread, this_object, method, dex_pc, field, field_value); 309 } 310 } 311 312 // Inform listeners that an exception was caught. 313 void ExceptionCaughtEvent(Thread* thread, const ThrowLocation& throw_location, 314 mirror::ArtMethod* catch_method, uint32_t catch_dex_pc, 315 mirror::Throwable* exception_object) const 316 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 317 318 // Called when an instrumented method is entered. The intended link register (lr) is saved so 319 // that returning causes a branch to the method exit stub. Generates method enter events. 320 void PushInstrumentationStackFrame(Thread* self, mirror::Object* this_object, 321 mirror::ArtMethod* method, uintptr_t lr, 322 bool interpreter_entry) 323 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 324 325 // Called when an instrumented method is exited. Removes the pushed instrumentation frame 326 // returning the intended link register. Generates method exit events. 327 TwoWordReturn PopInstrumentationStackFrame(Thread* self, uintptr_t* return_pc, 328 uint64_t gpr_result, uint64_t fpr_result) 329 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 330 331 // Pops an instrumentation frame from the current thread and generate an unwind event. 332 void PopMethodForUnwind(Thread* self, bool is_deoptimization) const 333 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 334 335 // Call back for configure stubs. 336 bool InstallStubsForClass(mirror::Class* klass) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 337 338 void InstallStubsForMethod(mirror::ArtMethod* method) 339 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 340 341 void VisitRoots(RootCallback* callback, void* arg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 342 LOCKS_EXCLUDED(deoptimized_methods_lock_); 343 344 private: 345 // Does the job of installing or removing instrumentation code within methods. 346 void ConfigureStubs(bool require_entry_exit_stubs, bool require_interpreter) 347 EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) 348 LOCKS_EXCLUDED(Locks::thread_list_lock_, Locks::classlinker_classes_lock_, 349 deoptimized_methods_lock_); 350 351 void UpdateInterpreterHandlerTable() EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) { 352 interpreter_handler_table_ = IsActive() ? kAlternativeHandlerTable : kMainHandlerTable; 353 } 354 355 // No thread safety analysis to get around SetQuickAllocEntryPointsInstrumented requiring 356 // exclusive access to mutator lock which you can't get if the runtime isn't started. 357 void SetEntrypointsInstrumented(bool instrumented) NO_THREAD_SAFETY_ANALYSIS; 358 359 void MethodEnterEventImpl(Thread* thread, mirror::Object* this_object, 360 mirror::ArtMethod* method, uint32_t dex_pc) const 361 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 362 void MethodExitEventImpl(Thread* thread, mirror::Object* this_object, 363 mirror::ArtMethod* method, 364 uint32_t dex_pc, const JValue& return_value) const 365 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 366 void DexPcMovedEventImpl(Thread* thread, mirror::Object* this_object, 367 mirror::ArtMethod* method, uint32_t dex_pc) const 368 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 369 void FieldReadEventImpl(Thread* thread, mirror::Object* this_object, 370 mirror::ArtMethod* method, uint32_t dex_pc, 371 mirror::ArtField* field) const 372 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 373 void FieldWriteEventImpl(Thread* thread, mirror::Object* this_object, 374 mirror::ArtMethod* method, uint32_t dex_pc, 375 mirror::ArtField* field, const JValue& field_value) const 376 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 377 378 // Read barrier-aware utility functions for accessing deoptimized_methods_ 379 bool AddDeoptimizedMethod(mirror::ArtMethod* method) 380 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 381 EXCLUSIVE_LOCKS_REQUIRED(deoptimized_methods_lock_); 382 bool FindDeoptimizedMethod(mirror::ArtMethod* method) 383 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 384 SHARED_LOCKS_REQUIRED(deoptimized_methods_lock_); 385 bool RemoveDeoptimizedMethod(mirror::ArtMethod* method) 386 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 387 EXCLUSIVE_LOCKS_REQUIRED(deoptimized_methods_lock_); 388 mirror::ArtMethod* BeginDeoptimizedMethod() 389 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 390 SHARED_LOCKS_REQUIRED(deoptimized_methods_lock_); 391 bool IsDeoptimizedMethodsEmpty() const 392 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 393 SHARED_LOCKS_REQUIRED(deoptimized_methods_lock_); 394 395 // Have we hijacked ArtMethod::code_ so that it calls instrumentation/interpreter code? 396 bool instrumentation_stubs_installed_; 397 398 // Have we hijacked ArtMethod::code_ to reference the enter/exit stubs? 399 bool entry_exit_stubs_installed_; 400 401 // Have we hijacked ArtMethod::code_ to reference the enter interpreter stub? 402 bool interpreter_stubs_installed_; 403 404 // Do we need the fidelity of events that we only get from running within the interpreter? 405 bool interpret_only_; 406 407 // Did the runtime request we only run in the interpreter? ie -Xint mode. 408 bool forced_interpret_only_; 409 410 // Do we have any listeners for method entry events? Short-cut to avoid taking the 411 // instrumentation_lock_. 412 bool have_method_entry_listeners_ GUARDED_BY(Locks::mutator_lock_); 413 414 // Do we have any listeners for method exit events? Short-cut to avoid taking the 415 // instrumentation_lock_. 416 bool have_method_exit_listeners_ GUARDED_BY(Locks::mutator_lock_); 417 418 // Do we have any listeners for method unwind events? Short-cut to avoid taking the 419 // instrumentation_lock_. 420 bool have_method_unwind_listeners_ GUARDED_BY(Locks::mutator_lock_); 421 422 // Do we have any listeners for dex move events? Short-cut to avoid taking the 423 // instrumentation_lock_. 424 bool have_dex_pc_listeners_ GUARDED_BY(Locks::mutator_lock_); 425 426 // Do we have any listeners for field read events? Short-cut to avoid taking the 427 // instrumentation_lock_. 428 bool have_field_read_listeners_ GUARDED_BY(Locks::mutator_lock_); 429 430 // Do we have any listeners for field write events? Short-cut to avoid taking the 431 // instrumentation_lock_. 432 bool have_field_write_listeners_ GUARDED_BY(Locks::mutator_lock_); 433 434 // Do we have any exception caught listeners? Short-cut to avoid taking the instrumentation_lock_. 435 bool have_exception_caught_listeners_ GUARDED_BY(Locks::mutator_lock_); 436 437 // The event listeners, written to with the mutator_lock_ exclusively held. 438 std::list<InstrumentationListener*> method_entry_listeners_ GUARDED_BY(Locks::mutator_lock_); 439 std::list<InstrumentationListener*> method_exit_listeners_ GUARDED_BY(Locks::mutator_lock_); 440 std::list<InstrumentationListener*> method_unwind_listeners_ GUARDED_BY(Locks::mutator_lock_); 441 std::shared_ptr<std::list<InstrumentationListener*>> dex_pc_listeners_ 442 GUARDED_BY(Locks::mutator_lock_); 443 std::shared_ptr<std::list<InstrumentationListener*>> field_read_listeners_ 444 GUARDED_BY(Locks::mutator_lock_); 445 std::shared_ptr<std::list<InstrumentationListener*>> field_write_listeners_ 446 GUARDED_BY(Locks::mutator_lock_); 447 std::shared_ptr<std::list<InstrumentationListener*>> exception_caught_listeners_ 448 GUARDED_BY(Locks::mutator_lock_); 449 450 // The set of methods being deoptimized (by the debugger) which must be executed with interpreter 451 // only. 452 mutable ReaderWriterMutex deoptimized_methods_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 453 std::multimap<int32_t, GcRoot<mirror::ArtMethod>> deoptimized_methods_ 454 GUARDED_BY(deoptimized_methods_lock_); 455 bool deoptimization_enabled_; 456 457 // Current interpreter handler table. This is updated each time the thread state flags are 458 // modified. 459 InterpreterHandlerTable interpreter_handler_table_ GUARDED_BY(Locks::mutator_lock_); 460 461 // Greater than 0 if quick alloc entry points instrumented. 462 size_t quick_alloc_entry_points_instrumentation_counter_ 463 GUARDED_BY(Locks::instrument_entrypoints_lock_); 464 465 DISALLOW_COPY_AND_ASSIGN(Instrumentation); 466 }; 467 468 // An element in the instrumentation side stack maintained in art::Thread. 469 struct InstrumentationStackFrame { 470 InstrumentationStackFrame(mirror::Object* this_object, mirror::ArtMethod* method, 471 uintptr_t return_pc, size_t frame_id, bool interpreter_entry) 472 : this_object_(this_object), method_(method), return_pc_(return_pc), frame_id_(frame_id), 473 interpreter_entry_(interpreter_entry) { 474 } 475 476 std::string Dump() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 477 478 mirror::Object* this_object_; 479 mirror::ArtMethod* method_; 480 uintptr_t return_pc_; 481 size_t frame_id_; 482 bool interpreter_entry_; 483 }; 484 485 } // namespace instrumentation 486 } // namespace art 487 488 #endif // ART_RUNTIME_INSTRUMENTATION_H_ 489
