runtime.h revision 1488ff8aa3b041734ef0fbd113df512a2376e44e
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 "process_state.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 lambda { 59 class BoxTable; 60} // namespace lambda 61 62namespace mirror { 63 class ClassLoader; 64 class Array; 65 template<class T> class ObjectArray; 66 template<class T> class PrimitiveArray; 67 typedef PrimitiveArray<int8_t> ByteArray; 68 class String; 69 class Throwable; 70} // namespace mirror 71namespace verifier { 72 class MethodVerifier; 73 enum class VerifyMode : int8_t; 74} // namespace verifier 75class ArenaPool; 76class ArtMethod; 77class ClassLinker; 78class Closure; 79class CompilerCallbacks; 80class DexFile; 81class InternTable; 82class JavaVMExt; 83class LinearAlloc; 84class MonitorList; 85class MonitorPool; 86class NullPointerHandler; 87class OatFileManager; 88struct RuntimeArgumentMap; 89class SignalCatcher; 90class StackOverflowHandler; 91class SuspensionHandler; 92class ThreadList; 93class Trace; 94struct TraceConfig; 95class Transaction; 96 97typedef std::vector<std::pair<std::string, const void*>> RuntimeOptions; 98 99struct EnvSnapshot { 100 public: 101 std::vector<std::unique_ptr<std::string> > name_value_pairs_; 102}; 103 104// Not all combinations of flags are valid. You may not visit all roots as well as the new roots 105// (no logical reason to do this). You also may not start logging new roots and stop logging new 106// roots (also no logical reason to do this). 107enum VisitRootFlags : uint8_t { 108 kVisitRootFlagAllRoots = 0x1, 109 kVisitRootFlagNewRoots = 0x2, 110 kVisitRootFlagStartLoggingNewRoots = 0x4, 111 kVisitRootFlagStopLoggingNewRoots = 0x8, 112 kVisitRootFlagClearRootLog = 0x10, 113 // Non moving means we can have optimizations where we don't visit some roots if they are 114 // definitely reachable from another location. E.g. ArtMethod and ArtField roots. 115 kVisitRootFlagNonMoving = 0x20, 116}; 117 118class Runtime { 119 public: 120 // Parse raw runtime options. 121 static bool ParseOptions(const RuntimeOptions& raw_options, 122 bool ignore_unrecognized, 123 RuntimeArgumentMap* runtime_options); 124 125 // Creates and initializes a new runtime. 126 static bool Create(RuntimeArgumentMap&& runtime_options) 127 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 128 129 // Creates and initializes a new runtime. 130 static bool Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) 131 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 132 133 // IsAotCompiler for compilers that don't have a running runtime. Only dex2oat currently. 134 bool IsAotCompiler() const { 135 return !UseJitCompilation() && IsCompiler(); 136 } 137 138 // IsCompiler is any runtime which has a running compiler, either dex2oat or JIT. 139 bool IsCompiler() const { 140 return compiler_callbacks_ != nullptr; 141 } 142 143 // If a compiler, are we compiling a boot image? 144 bool IsCompilingBootImage() const; 145 146 bool CanRelocate() const; 147 148 bool ShouldRelocate() const { 149 return must_relocate_ && CanRelocate(); 150 } 151 152 bool MustRelocateIfPossible() const { 153 return must_relocate_; 154 } 155 156 bool IsDex2OatEnabled() const { 157 return dex2oat_enabled_ && IsImageDex2OatEnabled(); 158 } 159 160 bool IsImageDex2OatEnabled() const { 161 return image_dex2oat_enabled_; 162 } 163 164 CompilerCallbacks* GetCompilerCallbacks() { 165 return compiler_callbacks_; 166 } 167 168 void SetCompilerCallbacks(CompilerCallbacks* callbacks) { 169 CHECK(callbacks != nullptr); 170 compiler_callbacks_ = callbacks; 171 } 172 173 bool IsZygote() const { 174 return is_zygote_; 175 } 176 177 bool IsExplicitGcDisabled() const { 178 return is_explicit_gc_disabled_; 179 } 180 181 std::string GetCompilerExecutable() const; 182 std::string GetPatchoatExecutable() const; 183 184 const std::vector<std::string>& GetCompilerOptions() const { 185 return compiler_options_; 186 } 187 188 void AddCompilerOption(std::string option) { 189 compiler_options_.push_back(option); 190 } 191 192 const std::vector<std::string>& GetImageCompilerOptions() const { 193 return image_compiler_options_; 194 } 195 196 const std::string& GetImageLocation() const { 197 return image_location_; 198 } 199 200 const ProfilerOptions& GetProfilerOptions() const { 201 return profiler_options_; 202 } 203 204 // Starts a runtime, which may cause threads to be started and code to run. 205 bool Start() UNLOCK_FUNCTION(Locks::mutator_lock_); 206 207 bool IsShuttingDown(Thread* self); 208 bool IsShuttingDownLocked() const REQUIRES(Locks::runtime_shutdown_lock_) { 209 return shutting_down_; 210 } 211 212 size_t NumberOfThreadsBeingBorn() const REQUIRES(Locks::runtime_shutdown_lock_) { 213 return threads_being_born_; 214 } 215 216 void StartThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 217 threads_being_born_++; 218 } 219 220 void EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_); 221 222 bool IsStarted() const { 223 return started_; 224 } 225 226 bool IsFinishedStarting() const { 227 return finished_starting_; 228 } 229 230 static Runtime* Current() { 231 return instance_; 232 } 233 234 // Aborts semi-cleanly. Used in the implementation of LOG(FATAL), which most 235 // callers should prefer. 236 NO_RETURN static void Abort() REQUIRES(!Locks::abort_lock_); 237 238 // Returns the "main" ThreadGroup, used when attaching user threads. 239 jobject GetMainThreadGroup() const; 240 241 // Returns the "system" ThreadGroup, used when attaching our internal threads. 242 jobject GetSystemThreadGroup() const; 243 244 // Returns the system ClassLoader which represents the CLASSPATH. 245 jobject GetSystemClassLoader() const; 246 247 // Attaches the calling native thread to the runtime. 248 bool AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 249 bool create_peer); 250 251 void CallExitHook(jint status); 252 253 // Detaches the current native thread from the runtime. 254 void DetachCurrentThread() REQUIRES(!Locks::mutator_lock_); 255 256 void DumpForSigQuit(std::ostream& os); 257 void DumpLockHolders(std::ostream& os); 258 259 ~Runtime(); 260 261 const std::string& GetBootClassPathString() const { 262 return boot_class_path_string_; 263 } 264 265 const std::string& GetClassPathString() const { 266 return class_path_string_; 267 } 268 269 ClassLinker* GetClassLinker() const { 270 return class_linker_; 271 } 272 273 size_t GetDefaultStackSize() const { 274 return default_stack_size_; 275 } 276 277 gc::Heap* GetHeap() const { 278 return heap_; 279 } 280 281 InternTable* GetInternTable() const { 282 DCHECK(intern_table_ != nullptr); 283 return intern_table_; 284 } 285 286 JavaVMExt* GetJavaVM() const { 287 return java_vm_; 288 } 289 290 size_t GetMaxSpinsBeforeThinkLockInflation() const { 291 return max_spins_before_thin_lock_inflation_; 292 } 293 294 MonitorList* GetMonitorList() const { 295 return monitor_list_; 296 } 297 298 MonitorPool* GetMonitorPool() const { 299 return monitor_pool_; 300 } 301 302 // Is the given object the special object used to mark a cleared JNI weak global? 303 bool IsClearedJniWeakGlobal(mirror::Object* obj) SHARED_REQUIRES(Locks::mutator_lock_); 304 305 // Get the special object used to mark a cleared JNI weak global. 306 mirror::Object* GetClearedJniWeakGlobal() SHARED_REQUIRES(Locks::mutator_lock_); 307 308 mirror::Throwable* GetPreAllocatedOutOfMemoryError() SHARED_REQUIRES(Locks::mutator_lock_); 309 310 mirror::Throwable* GetPreAllocatedNoClassDefFoundError() 311 SHARED_REQUIRES(Locks::mutator_lock_); 312 313 const std::vector<std::string>& GetProperties() const { 314 return properties_; 315 } 316 317 ThreadList* GetThreadList() const { 318 return thread_list_; 319 } 320 321 static const char* GetVersion() { 322 return "2.1.0"; 323 } 324 325 void DisallowNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 326 void AllowNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 327 void BroadcastForNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 328 329 // Visit all the roots. If only_dirty is true then non-dirty roots won't be visited. If 330 // clean_dirty is true then dirty roots will be marked as non-dirty after visiting. 331 void VisitRoots(RootVisitor* visitor, VisitRootFlags flags = kVisitRootFlagAllRoots) 332 SHARED_REQUIRES(Locks::mutator_lock_); 333 334 // Visit image roots, only used for hprof since the GC uses the image space mod union table 335 // instead. 336 void VisitImageRoots(RootVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_); 337 338 // Visit all of the roots we can do safely do concurrently. 339 void VisitConcurrentRoots(RootVisitor* visitor, 340 VisitRootFlags flags = kVisitRootFlagAllRoots) 341 SHARED_REQUIRES(Locks::mutator_lock_); 342 343 // Visit all of the non thread roots, we can do this with mutators unpaused. 344 void VisitNonThreadRoots(RootVisitor* visitor) 345 SHARED_REQUIRES(Locks::mutator_lock_); 346 347 void VisitTransactionRoots(RootVisitor* visitor) 348 SHARED_REQUIRES(Locks::mutator_lock_); 349 350 // Visit all of the thread roots. 351 void VisitThreadRoots(RootVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_); 352 353 // Flip thread roots from from-space refs to to-space refs. 354 size_t FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 355 gc::collector::GarbageCollector* collector) 356 REQUIRES(!Locks::mutator_lock_); 357 358 // Visit all other roots which must be done with mutators suspended. 359 void VisitNonConcurrentRoots(RootVisitor* visitor) 360 SHARED_REQUIRES(Locks::mutator_lock_); 361 362 // Sweep system weaks, the system weak is deleted if the visitor return null. Otherwise, the 363 // system weak is updated to be the visitor's returned value. 364 void SweepSystemWeaks(IsMarkedVisitor* visitor) 365 SHARED_REQUIRES(Locks::mutator_lock_); 366 367 // Constant roots are the roots which never change after the runtime is initialized, they only 368 // need to be visited once per GC cycle. 369 void VisitConstantRoots(RootVisitor* visitor) 370 SHARED_REQUIRES(Locks::mutator_lock_); 371 372 // Returns a special method that calls into a trampoline for runtime method resolution 373 ArtMethod* GetResolutionMethod(); 374 375 bool HasResolutionMethod() const { 376 return resolution_method_ != nullptr; 377 } 378 379 void SetResolutionMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 380 381 ArtMethod* CreateResolutionMethod() SHARED_REQUIRES(Locks::mutator_lock_); 382 383 // Returns a special method that calls into a trampoline for runtime imt conflicts. 384 ArtMethod* GetImtConflictMethod(); 385 ArtMethod* GetImtUnimplementedMethod(); 386 387 bool HasImtConflictMethod() const { 388 return imt_conflict_method_ != nullptr; 389 } 390 391 void FixupConflictTables(); 392 void SetImtConflictMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 393 void SetImtUnimplementedMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 394 395 ArtMethod* CreateImtConflictMethod(LinearAlloc* linear_alloc) 396 SHARED_REQUIRES(Locks::mutator_lock_); 397 398 // Returns a special method that describes all callee saves being spilled to the stack. 399 enum CalleeSaveType { 400 kSaveAll, 401 kRefsOnly, 402 kRefsAndArgs, 403 kLastCalleeSaveType // Value used for iteration 404 }; 405 406 bool HasCalleeSaveMethod(CalleeSaveType type) const { 407 return callee_save_methods_[type] != 0u; 408 } 409 410 ArtMethod* GetCalleeSaveMethod(CalleeSaveType type) 411 SHARED_REQUIRES(Locks::mutator_lock_); 412 413 ArtMethod* GetCalleeSaveMethodUnchecked(CalleeSaveType type) 414 SHARED_REQUIRES(Locks::mutator_lock_); 415 416 QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const { 417 return callee_save_method_frame_infos_[type]; 418 } 419 420 QuickMethodFrameInfo GetRuntimeMethodFrameInfo(ArtMethod* method) 421 SHARED_REQUIRES(Locks::mutator_lock_); 422 423 static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) { 424 return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]); 425 } 426 427 InstructionSet GetInstructionSet() const { 428 return instruction_set_; 429 } 430 431 void SetInstructionSet(InstructionSet instruction_set); 432 433 void SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type); 434 435 ArtMethod* CreateCalleeSaveMethod() SHARED_REQUIRES(Locks::mutator_lock_); 436 437 int32_t GetStat(int kind); 438 439 RuntimeStats* GetStats() { 440 return &stats_; 441 } 442 443 bool HasStatsEnabled() const { 444 return stats_enabled_; 445 } 446 447 void ResetStats(int kinds); 448 449 void SetStatsEnabled(bool new_state) 450 REQUIRES(!Locks::instrument_entrypoints_lock_, !Locks::mutator_lock_); 451 452 enum class NativeBridgeAction { // private 453 kUnload, 454 kInitialize 455 }; 456 457 jit::Jit* GetJit() { 458 return jit_.get(); 459 } 460 461 // Returns true if JIT compilations are enabled. GetJit() will be not null in this case. 462 bool UseJitCompilation() const; 463 // Returns true if profile saving is enabled. GetJit() will be not null in this case. 464 bool SaveProfileInfo() const; 465 466 void PreZygoteFork(); 467 bool InitZygote(); 468 void InitNonZygoteOrPostFork( 469 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa); 470 471 const instrumentation::Instrumentation* GetInstrumentation() const { 472 return &instrumentation_; 473 } 474 475 instrumentation::Instrumentation* GetInstrumentation() { 476 return &instrumentation_; 477 } 478 479 void RegisterAppInfo(const std::vector<std::string>& code_paths, 480 const std::string& profile_output_filename, 481 const std::string& foreign_dex_profile_path, 482 const std::string& app_dir); 483 void NotifyDexLoaded(const std::string& dex_location); 484 485 // Transaction support. 486 bool IsActiveTransaction() const { 487 return preinitialization_transaction_ != nullptr; 488 } 489 void EnterTransactionMode(Transaction* transaction); 490 void ExitTransactionMode(); 491 bool IsTransactionAborted() const; 492 493 void AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) 494 SHARED_REQUIRES(Locks::mutator_lock_); 495 void ThrowTransactionAbortError(Thread* self) 496 SHARED_REQUIRES(Locks::mutator_lock_); 497 498 void RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, uint8_t value, 499 bool is_volatile) const; 500 void RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, int8_t value, 501 bool is_volatile) const; 502 void RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, uint16_t value, 503 bool is_volatile) const; 504 void RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, int16_t value, 505 bool is_volatile) const; 506 void RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, uint32_t value, 507 bool is_volatile) const; 508 void RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, uint64_t value, 509 bool is_volatile) const; 510 void RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 511 mirror::Object* value, bool is_volatile) const; 512 void RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const 513 SHARED_REQUIRES(Locks::mutator_lock_); 514 void RecordStrongStringInsertion(mirror::String* s) const 515 REQUIRES(Locks::intern_table_lock_); 516 void RecordWeakStringInsertion(mirror::String* s) const 517 REQUIRES(Locks::intern_table_lock_); 518 void RecordStrongStringRemoval(mirror::String* s) const 519 REQUIRES(Locks::intern_table_lock_); 520 void RecordWeakStringRemoval(mirror::String* s) const 521 REQUIRES(Locks::intern_table_lock_); 522 523 void SetFaultMessage(const std::string& message) REQUIRES(!fault_message_lock_); 524 // Only read by the signal handler, NO_THREAD_SAFETY_ANALYSIS to prevent lock order violations 525 // with the unexpected_signal_lock_. 526 const std::string& GetFaultMessage() NO_THREAD_SAFETY_ANALYSIS { 527 return fault_message_; 528 } 529 530 void AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* arg_vector) const; 531 532 bool ExplicitStackOverflowChecks() const { 533 return !implicit_so_checks_; 534 } 535 536 bool IsVerificationEnabled() const; 537 bool IsVerificationSoftFail() const; 538 539 bool IsDexFileFallbackEnabled() const { 540 return allow_dex_file_fallback_; 541 } 542 543 const std::vector<std::string>& GetCpuAbilist() const { 544 return cpu_abilist_; 545 } 546 547 bool IsRunningOnMemoryTool() const { 548 return is_running_on_memory_tool_; 549 } 550 551 void SetTargetSdkVersion(int32_t version) { 552 target_sdk_version_ = version; 553 } 554 555 int32_t GetTargetSdkVersion() const { 556 return target_sdk_version_; 557 } 558 559 uint32_t GetZygoteMaxFailedBoots() const { 560 return zygote_max_failed_boots_; 561 } 562 563 bool AreExperimentalFlagsEnabled(ExperimentalFlags flags) { 564 return (experimental_flags_ & flags) != ExperimentalFlags::kNone; 565 } 566 567 lambda::BoxTable* GetLambdaBoxTable() const { 568 return lambda_box_table_.get(); 569 } 570 571 // Create the JIT and instrumentation and code cache. 572 void CreateJit(); 573 574 ArenaPool* GetArenaPool() { 575 return arena_pool_.get(); 576 } 577 ArenaPool* GetJitArenaPool() { 578 return jit_arena_pool_.get(); 579 } 580 const ArenaPool* GetArenaPool() const { 581 return arena_pool_.get(); 582 } 583 584 void ReclaimArenaPoolMemory(); 585 586 LinearAlloc* GetLinearAlloc() { 587 return linear_alloc_.get(); 588 } 589 590 jit::JitOptions* GetJITOptions() { 591 return jit_options_.get(); 592 } 593 594 bool IsDebuggable() const; 595 596 bool IsNativeDebuggable() const { 597 return is_native_debuggable_; 598 } 599 600 void SetNativeDebuggable(bool value) { 601 is_native_debuggable_ = value; 602 } 603 604 // Returns the build fingerprint, if set. Otherwise an empty string is returned. 605 std::string GetFingerprint() { 606 return fingerprint_; 607 } 608 609 // Called from class linker. 610 void SetSentinel(mirror::Object* sentinel) SHARED_REQUIRES(Locks::mutator_lock_); 611 612 // Create a normal LinearAlloc or low 4gb version if we are 64 bit AOT compiler. 613 LinearAlloc* CreateLinearAlloc(); 614 615 OatFileManager& GetOatFileManager() const { 616 DCHECK(oat_file_manager_ != nullptr); 617 return *oat_file_manager_; 618 } 619 620 double GetHashTableMinLoadFactor() const; 621 double GetHashTableMaxLoadFactor() const; 622 623 void SetSafeMode(bool mode) { 624 safe_mode_ = mode; 625 } 626 627 bool GetDumpNativeStackOnSigQuit() const { 628 return dump_native_stack_on_sig_quit_; 629 } 630 631 bool GetPrunedDalvikCache() const { 632 return pruned_dalvik_cache_; 633 } 634 635 void SetPrunedDalvikCache(bool pruned) { 636 pruned_dalvik_cache_ = pruned; 637 } 638 639 void UpdateProcessState(ProcessState process_state); 640 641 // Returns true if we currently care about long mutator pause. 642 bool InJankPerceptibleProcessState() const { 643 return process_state_ == kProcessStateJankPerceptible; 644 } 645 646 void RegisterSensitiveThread() const; 647 648 void SetZygoteNoThreadSection(bool val) { 649 zygote_no_threads_ = val; 650 } 651 652 bool IsZygoteNoThreadSection() const { 653 return zygote_no_threads_; 654 } 655 656 // Returns a saved copy of the environment (getenv/setenv values). 657 // Used by Fork to protect against overwriting LD_LIBRARY_PATH, etc. 658 const EnvSnapshot* GetEnvSnapshot() const { 659 return env_snapshot_.get(); 660 } 661 662 private: 663 static void InitPlatformSignalHandlers(); 664 665 Runtime(); 666 667 void BlockSignals(); 668 669 bool Init(RuntimeArgumentMap&& runtime_options) 670 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 671 void InitNativeMethods() REQUIRES(!Locks::mutator_lock_); 672 void InitThreadGroups(Thread* self); 673 void RegisterRuntimeNativeMethods(JNIEnv* env); 674 675 void StartDaemonThreads(); 676 void StartSignalCatcher(); 677 678 void MaybeSaveJitProfilingInfo(); 679 680 // A pointer to the active runtime or null. 681 static Runtime* instance_; 682 683 // NOTE: these must match the gc::ProcessState values as they come directly from the framework. 684 static constexpr int kProfileForground = 0; 685 static constexpr int kProfileBackground = 1; 686 687 // 64 bit so that we can share the same asm offsets for both 32 and 64 bits. 688 uint64_t callee_save_methods_[kLastCalleeSaveType]; 689 GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_; 690 GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_; 691 ArtMethod* resolution_method_; 692 ArtMethod* imt_conflict_method_; 693 // Unresolved method has the same behavior as the conflict method, it is used by the class linker 694 // for differentiating between unfilled imt slots vs conflict slots in superclasses. 695 ArtMethod* imt_unimplemented_method_; 696 697 // Special sentinel object used to invalid conditions in JNI (cleared weak references) and 698 // JDWP (invalid references). 699 GcRoot<mirror::Object> sentinel_; 700 701 InstructionSet instruction_set_; 702 QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType]; 703 704 CompilerCallbacks* compiler_callbacks_; 705 bool is_zygote_; 706 bool must_relocate_; 707 bool is_concurrent_gc_enabled_; 708 bool is_explicit_gc_disabled_; 709 bool dex2oat_enabled_; 710 bool image_dex2oat_enabled_; 711 712 std::string compiler_executable_; 713 std::string patchoat_executable_; 714 std::vector<std::string> compiler_options_; 715 std::vector<std::string> image_compiler_options_; 716 std::string image_location_; 717 718 std::string boot_class_path_string_; 719 std::string class_path_string_; 720 std::vector<std::string> properties_; 721 722 // The default stack size for managed threads created by the runtime. 723 size_t default_stack_size_; 724 725 gc::Heap* heap_; 726 727 std::unique_ptr<ArenaPool> jit_arena_pool_; 728 std::unique_ptr<ArenaPool> arena_pool_; 729 // Special low 4gb pool for compiler linear alloc. We need ArtFields to be in low 4gb if we are 730 // compiling using a 32 bit image on a 64 bit compiler in case we resolve things in the image 731 // since the field arrays are int arrays in this case. 732 std::unique_ptr<ArenaPool> low_4gb_arena_pool_; 733 734 // Shared linear alloc for now. 735 std::unique_ptr<LinearAlloc> linear_alloc_; 736 737 // The number of spins that are done before thread suspension is used to forcibly inflate. 738 size_t max_spins_before_thin_lock_inflation_; 739 MonitorList* monitor_list_; 740 MonitorPool* monitor_pool_; 741 742 ThreadList* thread_list_; 743 744 InternTable* intern_table_; 745 746 ClassLinker* class_linker_; 747 748 SignalCatcher* signal_catcher_; 749 std::string stack_trace_file_; 750 751 JavaVMExt* java_vm_; 752 753 std::unique_ptr<jit::Jit> jit_; 754 std::unique_ptr<jit::JitOptions> jit_options_; 755 756 std::unique_ptr<lambda::BoxTable> lambda_box_table_; 757 758 // Fault message, printed when we get a SIGSEGV. 759 Mutex fault_message_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 760 std::string fault_message_ GUARDED_BY(fault_message_lock_); 761 762 // A non-zero value indicates that a thread has been created but not yet initialized. Guarded by 763 // the shutdown lock so that threads aren't born while we're shutting down. 764 size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_); 765 766 // Waited upon until no threads are being born. 767 std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_); 768 769 // Set when runtime shutdown is past the point that new threads may attach. 770 bool shutting_down_ GUARDED_BY(Locks::runtime_shutdown_lock_); 771 772 // The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. 773 bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_); 774 775 bool started_; 776 777 // New flag added which tells us if the runtime has finished starting. If 778 // this flag is set then the Daemon threads are created and the class loader 779 // is created. This flag is needed for knowing if its safe to request CMS. 780 bool finished_starting_; 781 782 // Hooks supported by JNI_CreateJavaVM 783 jint (*vfprintf_)(FILE* stream, const char* format, va_list ap); 784 void (*exit_)(jint status); 785 void (*abort_)(); 786 787 bool stats_enabled_; 788 RuntimeStats stats_; 789 790 const bool is_running_on_memory_tool_; 791 792 std::string profile_output_filename_; 793 ProfilerOptions profiler_options_; 794 795 std::unique_ptr<TraceConfig> trace_config_; 796 797 instrumentation::Instrumentation instrumentation_; 798 799 jobject main_thread_group_; 800 jobject system_thread_group_; 801 802 // As returned by ClassLoader.getSystemClassLoader(). 803 jobject system_class_loader_; 804 805 // If true, then we dump the GC cumulative timings on shutdown. 806 bool dump_gc_performance_on_shutdown_; 807 808 // Transaction used for pre-initializing classes at compilation time. 809 Transaction* preinitialization_transaction_; 810 811 // If kNone, verification is disabled. kEnable by default. 812 verifier::VerifyMode verify_; 813 814 // If true, the runtime may use dex files directly with the interpreter if an oat file is not 815 // available/usable. 816 bool allow_dex_file_fallback_; 817 818 // List of supported cpu abis. 819 std::vector<std::string> cpu_abilist_; 820 821 // Specifies target SDK version to allow workarounds for certain API levels. 822 int32_t target_sdk_version_; 823 824 // Implicit checks flags. 825 bool implicit_null_checks_; // NullPointer checks are implicit. 826 bool implicit_so_checks_; // StackOverflow checks are implicit. 827 bool implicit_suspend_checks_; // Thread suspension checks are implicit. 828 829 // Whether or not the sig chain (and implicitly the fault handler) should be 830 // disabled. Tools like dex2oat or patchoat don't need them. This enables 831 // building a statically link version of dex2oat. 832 bool no_sig_chain_; 833 834 // Force the use of native bridge even if the app ISA matches the runtime ISA. 835 bool force_native_bridge_; 836 837 // Whether or not a native bridge has been loaded. 838 // 839 // The native bridge allows running native code compiled for a foreign ISA. The way it works is, 840 // if standard dlopen fails to load native library associated with native activity, it calls to 841 // the native bridge to load it and then gets the trampoline for the entry to native activity. 842 // 843 // The option 'native_bridge_library_filename' specifies the name of the native bridge. 844 // When non-empty the native bridge will be loaded from the given file. An empty value means 845 // that there's no native bridge. 846 bool is_native_bridge_loaded_; 847 848 // Whether we are running under native debugger. 849 bool is_native_debuggable_; 850 851 // The maximum number of failed boots we allow before pruning the dalvik cache 852 // and trying again. This option is only inspected when we're running as a 853 // zygote. 854 uint32_t zygote_max_failed_boots_; 855 856 // Enable experimental opcodes that aren't fully specified yet. The intent is to 857 // eventually publish them as public-usable opcodes, but they aren't ready yet. 858 // 859 // Experimental opcodes should not be used by other production code. 860 ExperimentalFlags experimental_flags_; 861 862 // Contains the build fingerprint, if given as a parameter. 863 std::string fingerprint_; 864 865 // Oat file manager, keeps track of what oat files are open. 866 OatFileManager* oat_file_manager_; 867 868 // Whether or not we are on a low RAM device. 869 bool is_low_memory_mode_; 870 871 // Whether the application should run in safe mode, that is, interpreter only. 872 bool safe_mode_; 873 874 // Whether threads should dump their native stack on SIGQUIT. 875 bool dump_native_stack_on_sig_quit_; 876 877 // Whether the dalvik cache was pruned when initializing the runtime. 878 bool pruned_dalvik_cache_; 879 880 // Whether or not we currently care about pause times. 881 ProcessState process_state_; 882 883 // Whether zygote code is in a section that should not start threads. 884 bool zygote_no_threads_; 885 886 // Saved environment. 887 std::unique_ptr<const EnvSnapshot> env_snapshot_; 888 889 DISALLOW_COPY_AND_ASSIGN(Runtime); 890}; 891std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs); 892 893} // namespace art 894 895#endif // ART_RUNTIME_RUNTIME_H_ 896