runtime.h revision 785049f8083e56e88dfeab5ff74fb3817f9854e3
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_RUNTIME_H_ 18#define ART_RUNTIME_RUNTIME_H_ 19 20#include <jni.h> 21#include <stdio.h> 22 23#include <iosfwd> 24#include <set> 25#include <string> 26#include <utility> 27#include <vector> 28 29#include "arch/instruction_set.h" 30#include "base/allocator.h" 31#include "base/arena_allocator.h" 32#include "base/macros.h" 33#include "compiler_callbacks.h" 34#include "gc_root.h" 35#include "instrumentation.h" 36#include "jobject_comparator.h" 37#include "object_callbacks.h" 38#include "offsets.h" 39#include "profiler_options.h" 40#include "quick/quick_method_frame_info.h" 41#include "runtime_stats.h" 42#include "safe_map.h" 43 44namespace art { 45 46namespace gc { 47 class Heap; 48 namespace collector { 49 class GarbageCollector; 50 } // namespace collector 51} // namespace gc 52 53namespace jit { 54 class Jit; 55 class JitOptions; 56} // namespace jit 57 58namespace mirror { 59 class ArtMethod; 60 class ClassLoader; 61 class Array; 62 template<class T> class ObjectArray; 63 template<class T> class PrimitiveArray; 64 typedef PrimitiveArray<int8_t> ByteArray; 65 class String; 66 class Throwable; 67} // namespace mirror 68namespace verifier { 69 class MethodVerifier; 70} // namespace verifier 71class ClassLinker; 72class Closure; 73class DexFile; 74class InternTable; 75class JavaVMExt; 76class MonitorList; 77class MonitorPool; 78class NullPointerHandler; 79class SignalCatcher; 80class StackOverflowHandler; 81class SuspensionHandler; 82class ThreadList; 83class Trace; 84class Transaction; 85 86typedef std::vector<std::pair<std::string, const void*>> RuntimeOptions; 87 88// Not all combinations of flags are valid. You may not visit all roots as well as the new roots 89// (no logical reason to do this). You also may not start logging new roots and stop logging new 90// roots (also no logical reason to do this). 91enum VisitRootFlags : uint8_t { 92 kVisitRootFlagAllRoots = 0x1, 93 kVisitRootFlagNewRoots = 0x2, 94 kVisitRootFlagStartLoggingNewRoots = 0x4, 95 kVisitRootFlagStopLoggingNewRoots = 0x8, 96 kVisitRootFlagClearRootLog = 0x10, 97}; 98 99class Runtime { 100 public: 101 // Creates and initializes a new runtime. 102 static bool Create(const RuntimeOptions& options, bool ignore_unrecognized) 103 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 104 105 // IsAotCompiler for compilers that don't have a running runtime. Only dex2oat currently. 106 bool IsAotCompiler() const { 107 return !UseJit() && IsCompiler(); 108 } 109 110 // IsCompiler is any runtime which has a running compiler, either dex2oat or JIT. 111 bool IsCompiler() const { 112 return compiler_callbacks_ != nullptr; 113 } 114 115 bool CanRelocate() const { 116 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 117 } 118 119 bool ShouldRelocate() const { 120 return must_relocate_ && CanRelocate(); 121 } 122 123 bool MustRelocateIfPossible() const { 124 return must_relocate_; 125 } 126 127 bool IsDex2OatEnabled() const { 128 return dex2oat_enabled_ && IsImageDex2OatEnabled(); 129 } 130 131 bool IsImageDex2OatEnabled() const { 132 return image_dex2oat_enabled_; 133 } 134 135 CompilerCallbacks* GetCompilerCallbacks() { 136 return compiler_callbacks_; 137 } 138 139 bool IsZygote() const { 140 return is_zygote_; 141 } 142 143 bool IsExplicitGcDisabled() const { 144 return is_explicit_gc_disabled_; 145 } 146 147 std::string GetCompilerExecutable() const; 148 std::string GetPatchoatExecutable() const; 149 150 const std::vector<std::string>& GetCompilerOptions() const { 151 return compiler_options_; 152 } 153 154 void AddCompilerOption(std::string option) { 155 compiler_options_.push_back(option); 156 } 157 158 const std::vector<std::string>& GetImageCompilerOptions() const { 159 return image_compiler_options_; 160 } 161 162 const std::string& GetImageLocation() const { 163 return image_location_; 164 } 165 166 const ProfilerOptions& GetProfilerOptions() const { 167 return profiler_options_; 168 } 169 170 // Starts a runtime, which may cause threads to be started and code to run. 171 bool Start() UNLOCK_FUNCTION(Locks::mutator_lock_); 172 173 bool IsShuttingDown(Thread* self); 174 bool IsShuttingDownLocked() const EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 175 return shutting_down_; 176 } 177 178 size_t NumberOfThreadsBeingBorn() const EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 179 return threads_being_born_; 180 } 181 182 void StartThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 183 threads_being_born_++; 184 } 185 186 void EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_); 187 188 bool IsStarted() const { 189 return started_; 190 } 191 192 bool IsFinishedStarting() const { 193 return finished_starting_; 194 } 195 196 static Runtime* Current() { 197 return instance_; 198 } 199 200 // Aborts semi-cleanly. Used in the implementation of LOG(FATAL), which most 201 // callers should prefer. 202 NO_RETURN static void Abort() LOCKS_EXCLUDED(Locks::abort_lock_); 203 204 // Returns the "main" ThreadGroup, used when attaching user threads. 205 jobject GetMainThreadGroup() const; 206 207 // Returns the "system" ThreadGroup, used when attaching our internal threads. 208 jobject GetSystemThreadGroup() const; 209 210 // Returns the system ClassLoader which represents the CLASSPATH. 211 jobject GetSystemClassLoader() const; 212 213 // Attaches the calling native thread to the runtime. 214 bool AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 215 bool create_peer); 216 217 void CallExitHook(jint status); 218 219 // Detaches the current native thread from the runtime. 220 void DetachCurrentThread() LOCKS_EXCLUDED(Locks::mutator_lock_); 221 222 void DumpForSigQuit(std::ostream& os); 223 void DumpLockHolders(std::ostream& os); 224 225 ~Runtime(); 226 227 const std::string& GetBootClassPathString() const { 228 return boot_class_path_string_; 229 } 230 231 const std::string& GetClassPathString() const { 232 return class_path_string_; 233 } 234 235 ClassLinker* GetClassLinker() const { 236 return class_linker_; 237 } 238 239 size_t GetDefaultStackSize() const { 240 return default_stack_size_; 241 } 242 243 gc::Heap* GetHeap() const { 244 return heap_; 245 } 246 247 InternTable* GetInternTable() const { 248 DCHECK(intern_table_ != NULL); 249 return intern_table_; 250 } 251 252 JavaVMExt* GetJavaVM() const { 253 return java_vm_; 254 } 255 256 size_t GetMaxSpinsBeforeThinkLockInflation() const { 257 return max_spins_before_thin_lock_inflation_; 258 } 259 260 MonitorList* GetMonitorList() const { 261 return monitor_list_; 262 } 263 264 MonitorPool* GetMonitorPool() const { 265 return monitor_pool_; 266 } 267 268 // Is the given object the special object used to mark a cleared JNI weak global? 269 bool IsClearedJniWeakGlobal(mirror::Object* obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 270 271 // Get the special object used to mark a cleared JNI weak global. 272 mirror::Object* GetClearedJniWeakGlobal() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 273 274 mirror::Throwable* GetPreAllocatedOutOfMemoryError() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 275 276 mirror::Throwable* GetPreAllocatedNoClassDefFoundError() 277 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 278 279 const std::vector<std::string>& GetProperties() const { 280 return properties_; 281 } 282 283 ThreadList* GetThreadList() const { 284 return thread_list_; 285 } 286 287 static const char* GetVersion() { 288 return "2.1.0"; 289 } 290 291 void DisallowNewSystemWeaks() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 292 void AllowNewSystemWeaks() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 293 void EnsureNewSystemWeaksDisallowed() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 294 295 // Visit all the roots. If only_dirty is true then non-dirty roots won't be visited. If 296 // clean_dirty is true then dirty roots will be marked as non-dirty after visiting. 297 void VisitRoots(RootCallback* visitor, void* arg, VisitRootFlags flags = kVisitRootFlagAllRoots) 298 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 299 300 // Visit all of the roots we can do safely do concurrently. 301 void VisitConcurrentRoots(RootCallback* visitor, void* arg, 302 VisitRootFlags flags = kVisitRootFlagAllRoots) 303 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 304 305 // Visit all of the non thread roots, we can do this with mutators unpaused. 306 void VisitNonThreadRoots(RootCallback* visitor, void* arg) 307 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 308 309 void VisitTransactionRoots(RootCallback* visitor, void* arg) 310 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 311 312 // Visit all of the thread roots. 313 void VisitThreadRoots(RootCallback* visitor, void* arg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 314 315 // Flip thread roots from from-space refs to to-space refs. 316 size_t FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 317 gc::collector::GarbageCollector* collector) 318 LOCKS_EXCLUDED(Locks::mutator_lock_); 319 320 // Visit all other roots which must be done with mutators suspended. 321 void VisitNonConcurrentRoots(RootCallback* visitor, void* arg) 322 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 323 324 // Sweep system weaks, the system weak is deleted if the visitor return nullptr. Otherwise, the 325 // system weak is updated to be the visitor's returned value. 326 void SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) 327 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 328 329 // Constant roots are the roots which never change after the runtime is initialized, they only 330 // need to be visited once per GC cycle. 331 void VisitConstantRoots(RootCallback* callback, void* arg) 332 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 333 334 // Returns a special method that calls into a trampoline for runtime method resolution 335 mirror::ArtMethod* GetResolutionMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 336 337 bool HasResolutionMethod() const { 338 return !resolution_method_.IsNull(); 339 } 340 341 void SetResolutionMethod(mirror::ArtMethod* method) { 342 resolution_method_ = GcRoot<mirror::ArtMethod>(method); 343 } 344 345 mirror::ArtMethod* CreateResolutionMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 346 347 // Returns a special method that calls into a trampoline for runtime imt conflicts. 348 mirror::ArtMethod* GetImtConflictMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 349 mirror::ArtMethod* GetImtUnimplementedMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 350 351 bool HasImtConflictMethod() const { 352 return !imt_conflict_method_.IsNull(); 353 } 354 355 void SetImtConflictMethod(mirror::ArtMethod* method); 356 void SetImtUnimplementedMethod(mirror::ArtMethod* method) { 357 imt_unimplemented_method_ = GcRoot<mirror::ArtMethod>(method); 358 } 359 360 mirror::ArtMethod* CreateImtConflictMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 361 362 // Returns an imt with every entry set to conflict, used as default imt for all classes. 363 mirror::ObjectArray<mirror::ArtMethod>* GetDefaultImt() 364 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 365 366 bool HasDefaultImt() const { 367 return !default_imt_.IsNull(); 368 } 369 370 void SetDefaultImt(mirror::ObjectArray<mirror::ArtMethod>* imt) { 371 default_imt_ = GcRoot<mirror::ObjectArray<mirror::ArtMethod>>(imt); 372 } 373 374 mirror::ObjectArray<mirror::ArtMethod>* CreateDefaultImt(ClassLinker* cl) 375 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 376 377 // Returns a special method that describes all callee saves being spilled to the stack. 378 enum CalleeSaveType { 379 kSaveAll, 380 kRefsOnly, 381 kRefsAndArgs, 382 kLastCalleeSaveType // Value used for iteration 383 }; 384 385 bool HasCalleeSaveMethod(CalleeSaveType type) const { 386 return !callee_save_methods_[type].IsNull(); 387 } 388 389 mirror::ArtMethod* GetCalleeSaveMethod(CalleeSaveType type) 390 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 391 392 mirror::ArtMethod* GetCalleeSaveMethodUnchecked(CalleeSaveType type) 393 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 394 395 QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const { 396 return callee_save_method_frame_infos_[type]; 397 } 398 399 QuickMethodFrameInfo GetRuntimeMethodFrameInfo(mirror::ArtMethod* method) 400 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 401 402 static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) { 403 return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]); 404 } 405 406 InstructionSet GetInstructionSet() const { 407 return instruction_set_; 408 } 409 410 void SetInstructionSet(InstructionSet instruction_set); 411 412 void SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type); 413 414 mirror::ArtMethod* CreateCalleeSaveMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 415 416 int32_t GetStat(int kind); 417 418 RuntimeStats* GetStats() { 419 return &stats_; 420 } 421 422 bool HasStatsEnabled() const { 423 return stats_enabled_; 424 } 425 426 void ResetStats(int kinds); 427 428 void SetStatsEnabled(bool new_state) LOCKS_EXCLUDED(Locks::instrument_entrypoints_lock_, 429 Locks::mutator_lock_); 430 431 enum class NativeBridgeAction { // private 432 kUnload, 433 kInitialize 434 }; 435 436 jit::Jit* GetJit() { 437 return jit_.get(); 438 } 439 bool UseJit() const { 440 return jit_.get() != nullptr; 441 } 442 443 void PreZygoteFork(); 444 bool InitZygote(); 445 void DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa); 446 447 const instrumentation::Instrumentation* GetInstrumentation() const { 448 return &instrumentation_; 449 } 450 451 instrumentation::Instrumentation* GetInstrumentation() { 452 return &instrumentation_; 453 } 454 455 bool UseCompileTimeClassPath() const { 456 return use_compile_time_class_path_; 457 } 458 459 const std::vector<const DexFile*>& GetCompileTimeClassPath(jobject class_loader); 460 461 // The caller is responsible for ensuring the class_path DexFiles remain 462 // valid as long as the Runtime object remains valid. 463 void SetCompileTimeClassPath(jobject class_loader, std::vector<const DexFile*>& class_path); 464 465 void StartProfiler(const char* profile_output_filename); 466 void UpdateProfilerState(int state); 467 468 // Transaction support. 469 bool IsActiveTransaction() const { 470 return preinitialization_transaction_ != nullptr; 471 } 472 void EnterTransactionMode(Transaction* transaction); 473 void ExitTransactionMode(); 474 bool IsTransactionAborted() const; 475 476 void AbortTransactionAndThrowInternalError(Thread* self, const std::string& abort_message) 477 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 478 void ThrowInternalErrorForAbortedTransaction(Thread* self) 479 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 480 481 void RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, uint8_t value, 482 bool is_volatile) const; 483 void RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, int8_t value, 484 bool is_volatile) const; 485 void RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, uint16_t value, 486 bool is_volatile) const; 487 void RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, int16_t value, 488 bool is_volatile) const; 489 void RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, uint32_t value, 490 bool is_volatile) const; 491 void RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, uint64_t value, 492 bool is_volatile) const; 493 void RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 494 mirror::Object* value, bool is_volatile) const; 495 void RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const 496 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 497 void RecordStrongStringInsertion(mirror::String* s) const 498 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 499 void RecordWeakStringInsertion(mirror::String* s) const 500 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 501 void RecordStrongStringRemoval(mirror::String* s) const 502 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 503 void RecordWeakStringRemoval(mirror::String* s) const 504 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 505 506 void SetFaultMessage(const std::string& message); 507 // Only read by the signal handler, NO_THREAD_SAFETY_ANALYSIS to prevent lock order violations 508 // with the unexpected_signal_lock_. 509 const std::string& GetFaultMessage() NO_THREAD_SAFETY_ANALYSIS { 510 return fault_message_; 511 } 512 513 void AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* arg_vector) const; 514 515 bool ExplicitStackOverflowChecks() const { 516 return !implicit_so_checks_; 517 } 518 519 bool IsVerificationEnabled() const { 520 return verify_; 521 } 522 523 bool IsDexFileFallbackEnabled() const { 524 return allow_dex_file_fallback_; 525 } 526 527 const std::vector<std::string>& GetCpuAbilist() const { 528 return cpu_abilist_; 529 } 530 531 bool RunningOnValgrind() const { 532 return running_on_valgrind_; 533 } 534 535 void SetTargetSdkVersion(int32_t version) { 536 target_sdk_version_ = version; 537 } 538 539 int32_t GetTargetSdkVersion() const { 540 return target_sdk_version_; 541 } 542 543 uint32_t GetZygoteMaxFailedBoots() const { 544 return zygote_max_failed_boots_; 545 } 546 547 // Create the JIT and instrumentation and code cache. 548 void CreateJit(); 549 550 ArenaPool* GetArenaPool() { 551 return arena_pool_.get(); 552 } 553 const ArenaPool* GetArenaPool() const { 554 return arena_pool_.get(); 555 } 556 557 jit::JitOptions* GetJITOptions() { 558 return jit_options_.get(); 559 } 560 561 private: 562 static void InitPlatformSignalHandlers(); 563 564 Runtime(); 565 566 void BlockSignals(); 567 568 bool Init(const RuntimeOptions& options, bool ignore_unrecognized) 569 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 570 void InitNativeMethods() LOCKS_EXCLUDED(Locks::mutator_lock_); 571 void InitThreadGroups(Thread* self); 572 void RegisterRuntimeNativeMethods(JNIEnv* env); 573 574 void StartDaemonThreads(); 575 void StartSignalCatcher(); 576 577 // A pointer to the active runtime or NULL. 578 static Runtime* instance_; 579 580 // NOTE: these must match the gc::ProcessState values as they come directly from the framework. 581 static constexpr int kProfileForground = 0; 582 static constexpr int kProfileBackgrouud = 1; 583 584 GcRoot<mirror::ArtMethod> callee_save_methods_[kLastCalleeSaveType]; 585 GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_; 586 GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_; 587 GcRoot<mirror::ArtMethod> resolution_method_; 588 GcRoot<mirror::ArtMethod> imt_conflict_method_; 589 // Unresolved method has the same behavior as the conflict method, it is used by the class linker 590 // for differentiating between unfilled imt slots vs conflict slots in superclasses. 591 GcRoot<mirror::ArtMethod> imt_unimplemented_method_; 592 GcRoot<mirror::ObjectArray<mirror::ArtMethod>> default_imt_; 593 594 // Special sentinel object used to invalid conditions in JNI (cleared weak references) and 595 // JDWP (invalid references). 596 GcRoot<mirror::Object> sentinel_; 597 598 InstructionSet instruction_set_; 599 QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType]; 600 601 CompilerCallbacks* compiler_callbacks_; 602 bool is_zygote_; 603 bool must_relocate_; 604 bool is_concurrent_gc_enabled_; 605 bool is_explicit_gc_disabled_; 606 bool dex2oat_enabled_; 607 bool image_dex2oat_enabled_; 608 609 std::string compiler_executable_; 610 std::string patchoat_executable_; 611 std::vector<std::string> compiler_options_; 612 std::vector<std::string> image_compiler_options_; 613 std::string image_location_; 614 615 std::string boot_class_path_string_; 616 std::string class_path_string_; 617 std::vector<std::string> properties_; 618 619 // The default stack size for managed threads created by the runtime. 620 size_t default_stack_size_; 621 622 gc::Heap* heap_; 623 624 std::unique_ptr<ArenaPool> arena_pool_; 625 626 // The number of spins that are done before thread suspension is used to forcibly inflate. 627 size_t max_spins_before_thin_lock_inflation_; 628 MonitorList* monitor_list_; 629 MonitorPool* monitor_pool_; 630 631 ThreadList* thread_list_; 632 633 InternTable* intern_table_; 634 635 ClassLinker* class_linker_; 636 637 SignalCatcher* signal_catcher_; 638 std::string stack_trace_file_; 639 640 JavaVMExt* java_vm_; 641 642 std::unique_ptr<jit::Jit> jit_; 643 std::unique_ptr<jit::JitOptions> jit_options_; 644 645 // Fault message, printed when we get a SIGSEGV. 646 Mutex fault_message_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 647 std::string fault_message_ GUARDED_BY(fault_message_lock_); 648 649 // A non-zero value indicates that a thread has been created but not yet initialized. Guarded by 650 // the shutdown lock so that threads aren't born while we're shutting down. 651 size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_); 652 653 // Waited upon until no threads are being born. 654 std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_); 655 656 // Set when runtime shutdown is past the point that new threads may attach. 657 bool shutting_down_ GUARDED_BY(Locks::runtime_shutdown_lock_); 658 659 // The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. 660 bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_); 661 662 bool started_; 663 664 // New flag added which tells us if the runtime has finished starting. If 665 // this flag is set then the Daemon threads are created and the class loader 666 // is created. This flag is needed for knowing if its safe to request CMS. 667 bool finished_starting_; 668 669 // Hooks supported by JNI_CreateJavaVM 670 jint (*vfprintf_)(FILE* stream, const char* format, va_list ap); 671 void (*exit_)(jint status); 672 void (*abort_)(); 673 674 bool stats_enabled_; 675 RuntimeStats stats_; 676 677 const bool running_on_valgrind_; 678 679 std::string profile_output_filename_; 680 ProfilerOptions profiler_options_; 681 bool profiler_started_; 682 683 bool method_trace_; 684 std::string method_trace_file_; 685 size_t method_trace_file_size_; 686 instrumentation::Instrumentation instrumentation_; 687 688 typedef AllocationTrackingSafeMap<jobject, std::vector<const DexFile*>, 689 kAllocatorTagCompileTimeClassPath, JobjectComparator> 690 CompileTimeClassPaths; 691 CompileTimeClassPaths compile_time_class_paths_; 692 bool use_compile_time_class_path_; 693 694 jobject main_thread_group_; 695 jobject system_thread_group_; 696 697 // As returned by ClassLoader.getSystemClassLoader(). 698 jobject system_class_loader_; 699 700 // If true, then we dump the GC cumulative timings on shutdown. 701 bool dump_gc_performance_on_shutdown_; 702 703 // Transaction used for pre-initializing classes at compilation time. 704 Transaction* preinitialization_transaction_; 705 706 // If false, verification is disabled. True by default. 707 bool verify_; 708 709 // If true, the runtime may use dex files directly with the interpreter if an oat file is not 710 // available/usable. 711 bool allow_dex_file_fallback_; 712 713 // List of supported cpu abis. 714 std::vector<std::string> cpu_abilist_; 715 716 // Specifies target SDK version to allow workarounds for certain API levels. 717 int32_t target_sdk_version_; 718 719 // Implicit checks flags. 720 bool implicit_null_checks_; // NullPointer checks are implicit. 721 bool implicit_so_checks_; // StackOverflow checks are implicit. 722 bool implicit_suspend_checks_; // Thread suspension checks are implicit. 723 724 // Whether or not a native bridge has been loaded. 725 // 726 // The native bridge allows running native code compiled for a foreign ISA. The way it works is, 727 // if standard dlopen fails to load native library associated with native activity, it calls to 728 // the native bridge to load it and then gets the trampoline for the entry to native activity. 729 // 730 // The option 'native_bridge_library_filename' specifies the name of the native bridge. 731 // When non-empty the native bridge will be loaded from the given file. An empty value means 732 // that there's no native bridge. 733 bool is_native_bridge_loaded_; 734 735 // The maximum number of failed boots we allow before pruning the dalvik cache 736 // and trying again. This option is only inspected when we're running as a 737 // zygote. 738 uint32_t zygote_max_failed_boots_; 739 740 DISALLOW_COPY_AND_ASSIGN(Runtime); 741}; 742std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs); 743 744} // namespace art 745 746#endif // ART_RUNTIME_RUNTIME_H_ 747