runtime.h revision ba69a51724d33444064443e456ce78b71db2fd16
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/macros.h" 31#include "experimental_flags.h" 32#include "gc_root.h" 33#include "instrumentation.h" 34#include "jobject_comparator.h" 35#include "method_reference.h" 36#include "object_callbacks.h" 37#include "offsets.h" 38#include "profiler_options.h" 39#include "quick/quick_method_frame_info.h" 40#include "runtime_stats.h" 41#include "safe_map.h" 42 43namespace art { 44 45namespace gc { 46 class Heap; 47 namespace collector { 48 class GarbageCollector; 49 } // namespace collector 50} // namespace gc 51 52namespace jit { 53 class Jit; 54 class JitOptions; 55} // namespace jit 56 57namespace lambda { 58 class BoxTable; 59} // namespace lambda 60 61namespace mirror { 62 class ClassLoader; 63 class Array; 64 template<class T> class ObjectArray; 65 template<class T> class PrimitiveArray; 66 typedef PrimitiveArray<int8_t> ByteArray; 67 class String; 68 class Throwable; 69} // namespace mirror 70namespace verifier { 71 class MethodVerifier; 72 enum class VerifyMode : int8_t; 73} // namespace verifier 74class ArenaPool; 75class ArtMethod; 76class ClassLinker; 77class Closure; 78class CompilerCallbacks; 79class DexFile; 80class InternTable; 81class JavaVMExt; 82class LinearAlloc; 83class MonitorList; 84class MonitorPool; 85class NullPointerHandler; 86class OatFileManager; 87class SignalCatcher; 88class StackOverflowHandler; 89class SuspensionHandler; 90class ThreadList; 91class Trace; 92struct TraceConfig; 93class Transaction; 94 95typedef std::vector<std::pair<std::string, const void*>> RuntimeOptions; 96typedef SafeMap<MethodReference, SafeMap<uint32_t, std::set<uint32_t>>, 97 MethodReferenceComparator> MethodRefToStringInitRegMap; 98 99// Not all combinations of flags are valid. You may not visit all roots as well as the new roots 100// (no logical reason to do this). You also may not start logging new roots and stop logging new 101// roots (also no logical reason to do this). 102enum VisitRootFlags : uint8_t { 103 kVisitRootFlagAllRoots = 0x1, 104 kVisitRootFlagNewRoots = 0x2, 105 kVisitRootFlagStartLoggingNewRoots = 0x4, 106 kVisitRootFlagStopLoggingNewRoots = 0x8, 107 kVisitRootFlagClearRootLog = 0x10, 108 // Non moving means we can have optimizations where we don't visit some roots if they are 109 // definitely reachable from another location. E.g. ArtMethod and ArtField roots. 110 kVisitRootFlagNonMoving = 0x20, 111}; 112 113class Runtime { 114 public: 115 // Creates and initializes a new runtime. 116 static bool Create(const RuntimeOptions& options, bool ignore_unrecognized) 117 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 118 119 // IsAotCompiler for compilers that don't have a running runtime. Only dex2oat currently. 120 bool IsAotCompiler() const { 121 return !UseJit() && IsCompiler(); 122 } 123 124 // IsCompiler is any runtime which has a running compiler, either dex2oat or JIT. 125 bool IsCompiler() const { 126 return compiler_callbacks_ != nullptr; 127 } 128 129 // If a compiler, are we compiling a boot image? 130 bool IsCompilingBootImage() const; 131 132 bool CanRelocate() const; 133 134 bool ShouldRelocate() const { 135 return must_relocate_ && CanRelocate(); 136 } 137 138 bool MustRelocateIfPossible() const { 139 return must_relocate_; 140 } 141 142 bool IsDex2OatEnabled() const { 143 return dex2oat_enabled_ && IsImageDex2OatEnabled(); 144 } 145 146 bool IsImageDex2OatEnabled() const { 147 return image_dex2oat_enabled_; 148 } 149 150 CompilerCallbacks* GetCompilerCallbacks() { 151 return compiler_callbacks_; 152 } 153 154 void SetCompilerCallbacks(CompilerCallbacks* callbacks) { 155 CHECK(callbacks != nullptr); 156 compiler_callbacks_ = callbacks; 157 } 158 159 bool IsZygote() const { 160 return is_zygote_; 161 } 162 163 bool IsExplicitGcDisabled() const { 164 return is_explicit_gc_disabled_; 165 } 166 167 std::string GetCompilerExecutable() const; 168 std::string GetPatchoatExecutable() const; 169 170 const std::vector<std::string>& GetCompilerOptions() const { 171 return compiler_options_; 172 } 173 174 void AddCompilerOption(std::string option) { 175 compiler_options_.push_back(option); 176 } 177 178 const std::vector<std::string>& GetImageCompilerOptions() const { 179 return image_compiler_options_; 180 } 181 182 const std::string& GetImageLocation() const { 183 return image_location_; 184 } 185 186 const ProfilerOptions& GetProfilerOptions() const { 187 return profiler_options_; 188 } 189 190 // Starts a runtime, which may cause threads to be started and code to run. 191 bool Start() UNLOCK_FUNCTION(Locks::mutator_lock_); 192 193 bool IsShuttingDown(Thread* self); 194 bool IsShuttingDownLocked() const REQUIRES(Locks::runtime_shutdown_lock_) { 195 return shutting_down_; 196 } 197 198 size_t NumberOfThreadsBeingBorn() const REQUIRES(Locks::runtime_shutdown_lock_) { 199 return threads_being_born_; 200 } 201 202 void StartThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 203 threads_being_born_++; 204 } 205 206 void EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_); 207 208 bool IsStarted() const { 209 return started_; 210 } 211 212 bool IsFinishedStarting() const { 213 return finished_starting_; 214 } 215 216 static Runtime* Current() { 217 return instance_; 218 } 219 220 // Aborts semi-cleanly. Used in the implementation of LOG(FATAL), which most 221 // callers should prefer. 222 NO_RETURN static void Abort() REQUIRES(!Locks::abort_lock_); 223 224 // Returns the "main" ThreadGroup, used when attaching user threads. 225 jobject GetMainThreadGroup() const; 226 227 // Returns the "system" ThreadGroup, used when attaching our internal threads. 228 jobject GetSystemThreadGroup() const; 229 230 // Returns the system ClassLoader which represents the CLASSPATH. 231 jobject GetSystemClassLoader() const; 232 233 // Attaches the calling native thread to the runtime. 234 bool AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 235 bool create_peer); 236 237 void CallExitHook(jint status); 238 239 // Detaches the current native thread from the runtime. 240 void DetachCurrentThread() REQUIRES(!Locks::mutator_lock_); 241 242 void DumpForSigQuit(std::ostream& os); 243 void DumpLockHolders(std::ostream& os); 244 245 ~Runtime(); 246 247 const std::string& GetBootClassPathString() const { 248 return boot_class_path_string_; 249 } 250 251 const std::string& GetClassPathString() const { 252 return class_path_string_; 253 } 254 255 ClassLinker* GetClassLinker() const { 256 return class_linker_; 257 } 258 259 size_t GetDefaultStackSize() const { 260 return default_stack_size_; 261 } 262 263 gc::Heap* GetHeap() const { 264 return heap_; 265 } 266 267 InternTable* GetInternTable() const { 268 DCHECK(intern_table_ != nullptr); 269 return intern_table_; 270 } 271 272 JavaVMExt* GetJavaVM() const { 273 return java_vm_; 274 } 275 276 size_t GetMaxSpinsBeforeThinkLockInflation() const { 277 return max_spins_before_thin_lock_inflation_; 278 } 279 280 MonitorList* GetMonitorList() const { 281 return monitor_list_; 282 } 283 284 MonitorPool* GetMonitorPool() const { 285 return monitor_pool_; 286 } 287 288 // Is the given object the special object used to mark a cleared JNI weak global? 289 bool IsClearedJniWeakGlobal(mirror::Object* obj) SHARED_REQUIRES(Locks::mutator_lock_); 290 291 // Get the special object used to mark a cleared JNI weak global. 292 mirror::Object* GetClearedJniWeakGlobal() SHARED_REQUIRES(Locks::mutator_lock_); 293 294 mirror::Throwable* GetPreAllocatedOutOfMemoryError() SHARED_REQUIRES(Locks::mutator_lock_); 295 296 mirror::Throwable* GetPreAllocatedNoClassDefFoundError() 297 SHARED_REQUIRES(Locks::mutator_lock_); 298 299 const std::vector<std::string>& GetProperties() const { 300 return properties_; 301 } 302 303 ThreadList* GetThreadList() const { 304 return thread_list_; 305 } 306 307 static const char* GetVersion() { 308 return "2.1.0"; 309 } 310 311 void DisallowNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 312 void AllowNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 313 void BroadcastForNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 314 315 // Visit all the roots. If only_dirty is true then non-dirty roots won't be visited. If 316 // clean_dirty is true then dirty roots will be marked as non-dirty after visiting. 317 void VisitRoots(RootVisitor* visitor, VisitRootFlags flags = kVisitRootFlagAllRoots) 318 SHARED_REQUIRES(Locks::mutator_lock_); 319 320 // Visit image roots, only used for hprof since the GC uses the image space mod union table 321 // instead. 322 void VisitImageRoots(RootVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_); 323 324 // Visit all of the roots we can do safely do concurrently. 325 void VisitConcurrentRoots(RootVisitor* visitor, 326 VisitRootFlags flags = kVisitRootFlagAllRoots) 327 SHARED_REQUIRES(Locks::mutator_lock_); 328 329 // Visit all of the non thread roots, we can do this with mutators unpaused. 330 void VisitNonThreadRoots(RootVisitor* visitor) 331 SHARED_REQUIRES(Locks::mutator_lock_); 332 333 void VisitTransactionRoots(RootVisitor* visitor) 334 SHARED_REQUIRES(Locks::mutator_lock_); 335 336 // Visit all of the thread roots. 337 void VisitThreadRoots(RootVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_); 338 339 // Flip thread roots from from-space refs to to-space refs. 340 size_t FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 341 gc::collector::GarbageCollector* collector) 342 REQUIRES(!Locks::mutator_lock_); 343 344 // Visit all other roots which must be done with mutators suspended. 345 void VisitNonConcurrentRoots(RootVisitor* visitor) 346 SHARED_REQUIRES(Locks::mutator_lock_); 347 348 // Sweep system weaks, the system weak is deleted if the visitor return null. Otherwise, the 349 // system weak is updated to be the visitor's returned value. 350 void SweepSystemWeaks(IsMarkedVisitor* visitor) 351 SHARED_REQUIRES(Locks::mutator_lock_); 352 353 // Constant roots are the roots which never change after the runtime is initialized, they only 354 // need to be visited once per GC cycle. 355 void VisitConstantRoots(RootVisitor* visitor) 356 SHARED_REQUIRES(Locks::mutator_lock_); 357 358 // Returns a special method that calls into a trampoline for runtime method resolution 359 ArtMethod* GetResolutionMethod() SHARED_REQUIRES(Locks::mutator_lock_); 360 361 bool HasResolutionMethod() const { 362 return resolution_method_ != nullptr; 363 } 364 365 void SetResolutionMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 366 367 ArtMethod* CreateResolutionMethod() SHARED_REQUIRES(Locks::mutator_lock_); 368 369 // Returns a special method that calls into a trampoline for runtime imt conflicts. 370 ArtMethod* GetImtConflictMethod() SHARED_REQUIRES(Locks::mutator_lock_); 371 ArtMethod* GetImtUnimplementedMethod() SHARED_REQUIRES(Locks::mutator_lock_); 372 373 bool HasImtConflictMethod() const { 374 return imt_conflict_method_ != nullptr; 375 } 376 377 void SetImtConflictMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 378 void SetImtUnimplementedMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 379 380 ArtMethod* CreateImtConflictMethod() SHARED_REQUIRES(Locks::mutator_lock_); 381 382 // Returns a special method that describes all callee saves being spilled to the stack. 383 enum CalleeSaveType { 384 kSaveAll, 385 kRefsOnly, 386 kRefsAndArgs, 387 kLastCalleeSaveType // Value used for iteration 388 }; 389 390 bool HasCalleeSaveMethod(CalleeSaveType type) const { 391 return callee_save_methods_[type] != 0u; 392 } 393 394 ArtMethod* GetCalleeSaveMethod(CalleeSaveType type) 395 SHARED_REQUIRES(Locks::mutator_lock_); 396 397 ArtMethod* GetCalleeSaveMethodUnchecked(CalleeSaveType type) 398 SHARED_REQUIRES(Locks::mutator_lock_); 399 400 QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const { 401 return callee_save_method_frame_infos_[type]; 402 } 403 404 QuickMethodFrameInfo GetRuntimeMethodFrameInfo(ArtMethod* method) 405 SHARED_REQUIRES(Locks::mutator_lock_); 406 407 static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) { 408 return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]); 409 } 410 411 InstructionSet GetInstructionSet() const { 412 return instruction_set_; 413 } 414 415 void SetInstructionSet(InstructionSet instruction_set); 416 417 void SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type); 418 419 ArtMethod* CreateCalleeSaveMethod() SHARED_REQUIRES(Locks::mutator_lock_); 420 421 int32_t GetStat(int kind); 422 423 RuntimeStats* GetStats() { 424 return &stats_; 425 } 426 427 bool HasStatsEnabled() const { 428 return stats_enabled_; 429 } 430 431 void ResetStats(int kinds); 432 433 void SetStatsEnabled(bool new_state) 434 REQUIRES(!Locks::instrument_entrypoints_lock_, !Locks::mutator_lock_); 435 436 enum class NativeBridgeAction { // private 437 kUnload, 438 kInitialize 439 }; 440 441 jit::Jit* GetJit() { 442 return jit_.get(); 443 } 444 bool UseJit() const { 445 return jit_.get() != nullptr; 446 } 447 448 void PreZygoteFork(); 449 bool InitZygote(); 450 void InitNonZygoteOrPostFork(JNIEnv* env, NativeBridgeAction action, const char* isa); 451 452 const instrumentation::Instrumentation* GetInstrumentation() const { 453 return &instrumentation_; 454 } 455 456 instrumentation::Instrumentation* GetInstrumentation() { 457 return &instrumentation_; 458 } 459 460 void StartProfiler(const char* profile_output_filename); 461 void UpdateProfilerState(int state); 462 463 // Transaction support. 464 bool IsActiveTransaction() const { 465 return preinitialization_transaction_ != nullptr; 466 } 467 void EnterTransactionMode(Transaction* transaction); 468 void ExitTransactionMode(); 469 bool IsTransactionAborted() const; 470 471 void AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) 472 SHARED_REQUIRES(Locks::mutator_lock_); 473 void ThrowTransactionAbortError(Thread* self) 474 SHARED_REQUIRES(Locks::mutator_lock_); 475 476 void RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, uint8_t value, 477 bool is_volatile) const; 478 void RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, int8_t value, 479 bool is_volatile) const; 480 void RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, uint16_t value, 481 bool is_volatile) const; 482 void RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, int16_t value, 483 bool is_volatile) const; 484 void RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, uint32_t value, 485 bool is_volatile) const; 486 void RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, uint64_t value, 487 bool is_volatile) const; 488 void RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 489 mirror::Object* value, bool is_volatile) const; 490 void RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const 491 SHARED_REQUIRES(Locks::mutator_lock_); 492 void RecordStrongStringInsertion(mirror::String* s) const 493 REQUIRES(Locks::intern_table_lock_); 494 void RecordWeakStringInsertion(mirror::String* s) const 495 REQUIRES(Locks::intern_table_lock_); 496 void RecordStrongStringRemoval(mirror::String* s) const 497 REQUIRES(Locks::intern_table_lock_); 498 void RecordWeakStringRemoval(mirror::String* s) const 499 REQUIRES(Locks::intern_table_lock_); 500 501 void SetFaultMessage(const std::string& message) REQUIRES(!fault_message_lock_); 502 // Only read by the signal handler, NO_THREAD_SAFETY_ANALYSIS to prevent lock order violations 503 // with the unexpected_signal_lock_. 504 const std::string& GetFaultMessage() NO_THREAD_SAFETY_ANALYSIS { 505 return fault_message_; 506 } 507 508 void AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* arg_vector) const; 509 510 bool ExplicitStackOverflowChecks() const { 511 return !implicit_so_checks_; 512 } 513 514 bool IsVerificationEnabled() const; 515 bool IsVerificationSoftFail() const; 516 517 bool IsDexFileFallbackEnabled() const { 518 return allow_dex_file_fallback_; 519 } 520 521 const std::vector<std::string>& GetCpuAbilist() const { 522 return cpu_abilist_; 523 } 524 525 bool IsRunningOnMemoryTool() const { 526 return is_running_on_memory_tool_; 527 } 528 529 void SetTargetSdkVersion(int32_t version) { 530 target_sdk_version_ = version; 531 } 532 533 int32_t GetTargetSdkVersion() const { 534 return target_sdk_version_; 535 } 536 537 uint32_t GetZygoteMaxFailedBoots() const { 538 return zygote_max_failed_boots_; 539 } 540 541 bool AreExperimentalFlagsEnabled(ExperimentalFlags flags) { 542 return (experimental_flags_ & flags) != ExperimentalFlags::kNone; 543 } 544 545 lambda::BoxTable* GetLambdaBoxTable() const { 546 return lambda_box_table_.get(); 547 } 548 549 // Create the JIT and instrumentation and code cache. 550 void CreateJit(); 551 552 ArenaPool* GetArenaPool() { 553 return arena_pool_.get(); 554 } 555 const ArenaPool* GetArenaPool() const { 556 return arena_pool_.get(); 557 } 558 LinearAlloc* GetLinearAlloc() { 559 return linear_alloc_.get(); 560 } 561 562 jit::JitOptions* GetJITOptions() { 563 return jit_options_.get(); 564 } 565 566 MethodRefToStringInitRegMap& GetStringInitMap() { 567 return method_ref_string_init_reg_map_; 568 } 569 570 bool IsDebuggable() const; 571 572 // Returns the build fingerprint, if set. Otherwise an empty string is returned. 573 std::string GetFingerprint() { 574 return fingerprint_; 575 } 576 577 // Called from class linker. 578 void SetSentinel(mirror::Object* sentinel) SHARED_REQUIRES(Locks::mutator_lock_); 579 580 // Create a normal LinearAlloc or low 4gb version if we are 64 bit AOT compiler. 581 LinearAlloc* CreateLinearAlloc(); 582 583 OatFileManager& GetOatFileManager() const { 584 DCHECK(oat_file_manager_ != nullptr); 585 return *oat_file_manager_; 586 } 587 588 double GetHashTableMinLoadFactor() const; 589 double GetHashTableMaxLoadFactor() const; 590 591 void SetSafeMode(bool mode) { 592 safe_mode_ = mode; 593 } 594 595 private: 596 static void InitPlatformSignalHandlers(); 597 598 Runtime(); 599 600 void BlockSignals(); 601 602 bool Init(const RuntimeOptions& options, bool ignore_unrecognized) 603 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 604 void InitNativeMethods() REQUIRES(!Locks::mutator_lock_); 605 void InitThreadGroups(Thread* self); 606 void RegisterRuntimeNativeMethods(JNIEnv* env); 607 608 void StartDaemonThreads(); 609 void StartSignalCatcher(); 610 611 // A pointer to the active runtime or null. 612 static Runtime* instance_; 613 614 // NOTE: these must match the gc::ProcessState values as they come directly from the framework. 615 static constexpr int kProfileForground = 0; 616 static constexpr int kProfileBackgrouud = 1; 617 618 // 64 bit so that we can share the same asm offsets for both 32 and 64 bits. 619 uint64_t callee_save_methods_[kLastCalleeSaveType]; 620 GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_; 621 GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_; 622 ArtMethod* resolution_method_; 623 ArtMethod* imt_conflict_method_; 624 // Unresolved method has the same behavior as the conflict method, it is used by the class linker 625 // for differentiating between unfilled imt slots vs conflict slots in superclasses. 626 ArtMethod* imt_unimplemented_method_; 627 628 // Special sentinel object used to invalid conditions in JNI (cleared weak references) and 629 // JDWP (invalid references). 630 GcRoot<mirror::Object> sentinel_; 631 632 InstructionSet instruction_set_; 633 QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType]; 634 635 CompilerCallbacks* compiler_callbacks_; 636 bool is_zygote_; 637 bool must_relocate_; 638 bool is_concurrent_gc_enabled_; 639 bool is_explicit_gc_disabled_; 640 bool dex2oat_enabled_; 641 bool image_dex2oat_enabled_; 642 643 std::string compiler_executable_; 644 std::string patchoat_executable_; 645 std::vector<std::string> compiler_options_; 646 std::vector<std::string> image_compiler_options_; 647 std::string image_location_; 648 649 std::string boot_class_path_string_; 650 std::string class_path_string_; 651 std::vector<std::string> properties_; 652 653 // The default stack size for managed threads created by the runtime. 654 size_t default_stack_size_; 655 656 gc::Heap* heap_; 657 658 std::unique_ptr<ArenaPool> arena_pool_; 659 // Special low 4gb pool for compiler linear alloc. We need ArtFields to be in low 4gb if we are 660 // compiling using a 32 bit image on a 64 bit compiler in case we resolve things in the image 661 // since the field arrays are int arrays in this case. 662 std::unique_ptr<ArenaPool> low_4gb_arena_pool_; 663 664 // Shared linear alloc for now. 665 std::unique_ptr<LinearAlloc> linear_alloc_; 666 667 // The number of spins that are done before thread suspension is used to forcibly inflate. 668 size_t max_spins_before_thin_lock_inflation_; 669 MonitorList* monitor_list_; 670 MonitorPool* monitor_pool_; 671 672 ThreadList* thread_list_; 673 674 InternTable* intern_table_; 675 676 ClassLinker* class_linker_; 677 678 SignalCatcher* signal_catcher_; 679 std::string stack_trace_file_; 680 681 JavaVMExt* java_vm_; 682 683 std::unique_ptr<jit::Jit> jit_; 684 std::unique_ptr<jit::JitOptions> jit_options_; 685 686 std::unique_ptr<lambda::BoxTable> lambda_box_table_; 687 688 // Fault message, printed when we get a SIGSEGV. 689 Mutex fault_message_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 690 std::string fault_message_ GUARDED_BY(fault_message_lock_); 691 692 // A non-zero value indicates that a thread has been created but not yet initialized. Guarded by 693 // the shutdown lock so that threads aren't born while we're shutting down. 694 size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_); 695 696 // Waited upon until no threads are being born. 697 std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_); 698 699 // Set when runtime shutdown is past the point that new threads may attach. 700 bool shutting_down_ GUARDED_BY(Locks::runtime_shutdown_lock_); 701 702 // The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. 703 bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_); 704 705 bool started_; 706 707 // New flag added which tells us if the runtime has finished starting. If 708 // this flag is set then the Daemon threads are created and the class loader 709 // is created. This flag is needed for knowing if its safe to request CMS. 710 bool finished_starting_; 711 712 // Hooks supported by JNI_CreateJavaVM 713 jint (*vfprintf_)(FILE* stream, const char* format, va_list ap); 714 void (*exit_)(jint status); 715 void (*abort_)(); 716 717 bool stats_enabled_; 718 RuntimeStats stats_; 719 720 const bool is_running_on_memory_tool_; 721 722 std::string profile_output_filename_; 723 ProfilerOptions profiler_options_; 724 bool profiler_started_; 725 726 std::unique_ptr<TraceConfig> trace_config_; 727 728 instrumentation::Instrumentation instrumentation_; 729 730 jobject main_thread_group_; 731 jobject system_thread_group_; 732 733 // As returned by ClassLoader.getSystemClassLoader(). 734 jobject system_class_loader_; 735 736 // If true, then we dump the GC cumulative timings on shutdown. 737 bool dump_gc_performance_on_shutdown_; 738 739 // Transaction used for pre-initializing classes at compilation time. 740 Transaction* preinitialization_transaction_; 741 742 // If kNone, verification is disabled. kEnable by default. 743 verifier::VerifyMode verify_; 744 745 // If true, the runtime may use dex files directly with the interpreter if an oat file is not 746 // available/usable. 747 bool allow_dex_file_fallback_; 748 749 // List of supported cpu abis. 750 std::vector<std::string> cpu_abilist_; 751 752 // Specifies target SDK version to allow workarounds for certain API levels. 753 int32_t target_sdk_version_; 754 755 // Implicit checks flags. 756 bool implicit_null_checks_; // NullPointer checks are implicit. 757 bool implicit_so_checks_; // StackOverflow checks are implicit. 758 bool implicit_suspend_checks_; // Thread suspension checks are implicit. 759 760 // Whether or not the sig chain (and implicitly the fault handler) should be 761 // disabled. Tools like dex2oat or patchoat don't need them. This enables 762 // building a statically link version of dex2oat. 763 bool no_sig_chain_; 764 765 // Whether or not a native bridge has been loaded. 766 // 767 // The native bridge allows running native code compiled for a foreign ISA. The way it works is, 768 // if standard dlopen fails to load native library associated with native activity, it calls to 769 // the native bridge to load it and then gets the trampoline for the entry to native activity. 770 // 771 // The option 'native_bridge_library_filename' specifies the name of the native bridge. 772 // When non-empty the native bridge will be loaded from the given file. An empty value means 773 // that there's no native bridge. 774 bool is_native_bridge_loaded_; 775 776 // The maximum number of failed boots we allow before pruning the dalvik cache 777 // and trying again. This option is only inspected when we're running as a 778 // zygote. 779 uint32_t zygote_max_failed_boots_; 780 781 // Enable experimental opcodes that aren't fully specified yet. The intent is to 782 // eventually publish them as public-usable opcodes, but they aren't ready yet. 783 // 784 // Experimental opcodes should not be used by other production code. 785 ExperimentalFlags experimental_flags_; 786 787 MethodRefToStringInitRegMap method_ref_string_init_reg_map_; 788 789 // Contains the build fingerprint, if given as a parameter. 790 std::string fingerprint_; 791 792 // Oat file manager, keeps track of what oat files are open. 793 OatFileManager* oat_file_manager_; 794 795 // Whether or not we are on a low RAM device. 796 bool is_low_memory_mode_; 797 798 // Whether the application should run in safe mode, that is, interpreter only. 799 bool safe_mode_; 800 801 DISALLOW_COPY_AND_ASSIGN(Runtime); 802}; 803std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs); 804 805} // namespace art 806 807#endif // ART_RUNTIME_RUNTIME_H_ 808