runtime.h revision e42888f9df4163303244070c65d5229d3e201742
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 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 // Parse raw runtime options. 116 static bool ParseOptions(const RuntimeOptions& raw_options, 117 bool ignore_unrecognized, 118 RuntimeArgumentMap* runtime_options); 119 120 // Creates and initializes a new runtime. 121 static bool Create(RuntimeArgumentMap&& runtime_options) 122 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 123 124 // Creates and initializes a new runtime. 125 static bool Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) 126 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 127 128 // IsAotCompiler for compilers that don't have a running runtime. Only dex2oat currently. 129 bool IsAotCompiler() const { 130 return !UseJit() && IsCompiler(); 131 } 132 133 // IsCompiler is any runtime which has a running compiler, either dex2oat or JIT. 134 bool IsCompiler() const { 135 return compiler_callbacks_ != nullptr; 136 } 137 138 // If a compiler, are we compiling a boot image? 139 bool IsCompilingBootImage() const; 140 141 bool CanRelocate() const; 142 143 bool ShouldRelocate() const { 144 return must_relocate_ && CanRelocate(); 145 } 146 147 bool MustRelocateIfPossible() const { 148 return must_relocate_; 149 } 150 151 bool IsDex2OatEnabled() const { 152 return dex2oat_enabled_ && IsImageDex2OatEnabled(); 153 } 154 155 bool IsImageDex2OatEnabled() const { 156 return image_dex2oat_enabled_; 157 } 158 159 CompilerCallbacks* GetCompilerCallbacks() { 160 return compiler_callbacks_; 161 } 162 163 void SetCompilerCallbacks(CompilerCallbacks* callbacks) { 164 CHECK(callbacks != nullptr); 165 compiler_callbacks_ = callbacks; 166 } 167 168 bool IsZygote() const { 169 return is_zygote_; 170 } 171 172 bool IsExplicitGcDisabled() const { 173 return is_explicit_gc_disabled_; 174 } 175 176 std::string GetCompilerExecutable() const; 177 std::string GetPatchoatExecutable() const; 178 179 const std::vector<std::string>& GetCompilerOptions() const { 180 return compiler_options_; 181 } 182 183 void AddCompilerOption(std::string option) { 184 compiler_options_.push_back(option); 185 } 186 187 const std::vector<std::string>& GetImageCompilerOptions() const { 188 return image_compiler_options_; 189 } 190 191 const std::string& GetImageLocation() const { 192 return image_location_; 193 } 194 195 const ProfilerOptions& GetProfilerOptions() const { 196 return profiler_options_; 197 } 198 199 // Starts a runtime, which may cause threads to be started and code to run. 200 bool Start() UNLOCK_FUNCTION(Locks::mutator_lock_); 201 202 bool IsShuttingDown(Thread* self); 203 bool IsShuttingDownLocked() const REQUIRES(Locks::runtime_shutdown_lock_) { 204 return shutting_down_; 205 } 206 207 size_t NumberOfThreadsBeingBorn() const REQUIRES(Locks::runtime_shutdown_lock_) { 208 return threads_being_born_; 209 } 210 211 void StartThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 212 threads_being_born_++; 213 } 214 215 void EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_); 216 217 bool IsStarted() const { 218 return started_; 219 } 220 221 bool IsFinishedStarting() const { 222 return finished_starting_; 223 } 224 225 static Runtime* Current() { 226 return instance_; 227 } 228 229 // Aborts semi-cleanly. Used in the implementation of LOG(FATAL), which most 230 // callers should prefer. 231 NO_RETURN static void Abort() REQUIRES(!Locks::abort_lock_); 232 233 // Returns the "main" ThreadGroup, used when attaching user threads. 234 jobject GetMainThreadGroup() const; 235 236 // Returns the "system" ThreadGroup, used when attaching our internal threads. 237 jobject GetSystemThreadGroup() const; 238 239 // Returns the system ClassLoader which represents the CLASSPATH. 240 jobject GetSystemClassLoader() const; 241 242 // Attaches the calling native thread to the runtime. 243 bool AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 244 bool create_peer); 245 246 void CallExitHook(jint status); 247 248 // Detaches the current native thread from the runtime. 249 void DetachCurrentThread() REQUIRES(!Locks::mutator_lock_); 250 251 void DumpForSigQuit(std::ostream& os); 252 void DumpLockHolders(std::ostream& os); 253 254 ~Runtime(); 255 256 const std::string& GetBootClassPathString() const { 257 return boot_class_path_string_; 258 } 259 260 const std::string& GetClassPathString() const { 261 return class_path_string_; 262 } 263 264 ClassLinker* GetClassLinker() const { 265 return class_linker_; 266 } 267 268 size_t GetDefaultStackSize() const { 269 return default_stack_size_; 270 } 271 272 gc::Heap* GetHeap() const { 273 return heap_; 274 } 275 276 InternTable* GetInternTable() const { 277 DCHECK(intern_table_ != nullptr); 278 return intern_table_; 279 } 280 281 JavaVMExt* GetJavaVM() const { 282 return java_vm_; 283 } 284 285 size_t GetMaxSpinsBeforeThinkLockInflation() const { 286 return max_spins_before_thin_lock_inflation_; 287 } 288 289 MonitorList* GetMonitorList() const { 290 return monitor_list_; 291 } 292 293 MonitorPool* GetMonitorPool() const { 294 return monitor_pool_; 295 } 296 297 // Is the given object the special object used to mark a cleared JNI weak global? 298 bool IsClearedJniWeakGlobal(mirror::Object* obj) SHARED_REQUIRES(Locks::mutator_lock_); 299 300 // Get the special object used to mark a cleared JNI weak global. 301 mirror::Object* GetClearedJniWeakGlobal() SHARED_REQUIRES(Locks::mutator_lock_); 302 303 mirror::Throwable* GetPreAllocatedOutOfMemoryError() SHARED_REQUIRES(Locks::mutator_lock_); 304 305 mirror::Throwable* GetPreAllocatedNoClassDefFoundError() 306 SHARED_REQUIRES(Locks::mutator_lock_); 307 308 const std::vector<std::string>& GetProperties() const { 309 return properties_; 310 } 311 312 ThreadList* GetThreadList() const { 313 return thread_list_; 314 } 315 316 static const char* GetVersion() { 317 return "2.1.0"; 318 } 319 320 void DisallowNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 321 void AllowNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 322 void BroadcastForNewSystemWeaks() SHARED_REQUIRES(Locks::mutator_lock_); 323 324 // Visit all the roots. If only_dirty is true then non-dirty roots won't be visited. If 325 // clean_dirty is true then dirty roots will be marked as non-dirty after visiting. 326 void VisitRoots(RootVisitor* visitor, VisitRootFlags flags = kVisitRootFlagAllRoots) 327 SHARED_REQUIRES(Locks::mutator_lock_); 328 329 // Visit image roots, only used for hprof since the GC uses the image space mod union table 330 // instead. 331 void VisitImageRoots(RootVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_); 332 333 // Visit all of the roots we can do safely do concurrently. 334 void VisitConcurrentRoots(RootVisitor* visitor, 335 VisitRootFlags flags = kVisitRootFlagAllRoots) 336 SHARED_REQUIRES(Locks::mutator_lock_); 337 338 // Visit all of the non thread roots, we can do this with mutators unpaused. 339 void VisitNonThreadRoots(RootVisitor* visitor) 340 SHARED_REQUIRES(Locks::mutator_lock_); 341 342 void VisitTransactionRoots(RootVisitor* visitor) 343 SHARED_REQUIRES(Locks::mutator_lock_); 344 345 // Visit all of the thread roots. 346 void VisitThreadRoots(RootVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_); 347 348 // Flip thread roots from from-space refs to to-space refs. 349 size_t FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 350 gc::collector::GarbageCollector* collector) 351 REQUIRES(!Locks::mutator_lock_); 352 353 // Visit all other roots which must be done with mutators suspended. 354 void VisitNonConcurrentRoots(RootVisitor* visitor) 355 SHARED_REQUIRES(Locks::mutator_lock_); 356 357 // Sweep system weaks, the system weak is deleted if the visitor return null. Otherwise, the 358 // system weak is updated to be the visitor's returned value. 359 void SweepSystemWeaks(IsMarkedVisitor* visitor) 360 SHARED_REQUIRES(Locks::mutator_lock_); 361 362 // Constant roots are the roots which never change after the runtime is initialized, they only 363 // need to be visited once per GC cycle. 364 void VisitConstantRoots(RootVisitor* visitor) 365 SHARED_REQUIRES(Locks::mutator_lock_); 366 367 // Returns a special method that calls into a trampoline for runtime method resolution 368 ArtMethod* GetResolutionMethod(); 369 370 bool HasResolutionMethod() const { 371 return resolution_method_ != nullptr; 372 } 373 374 void SetResolutionMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 375 376 ArtMethod* CreateResolutionMethod() SHARED_REQUIRES(Locks::mutator_lock_); 377 378 // Returns a special method that calls into a trampoline for runtime imt conflicts. 379 ArtMethod* GetImtConflictMethod(); 380 ArtMethod* GetImtUnimplementedMethod(); 381 382 bool HasImtConflictMethod() const { 383 return imt_conflict_method_ != nullptr; 384 } 385 386 void FixupConflictTables(); 387 void SetImtConflictMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 388 void SetImtUnimplementedMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 389 390 ArtMethod* CreateImtConflictMethod(LinearAlloc* linear_alloc) 391 SHARED_REQUIRES(Locks::mutator_lock_); 392 393 // Returns a special method that describes all callee saves being spilled to the stack. 394 enum CalleeSaveType { 395 kSaveAll, 396 kRefsOnly, 397 kRefsAndArgs, 398 kLastCalleeSaveType // Value used for iteration 399 }; 400 401 bool HasCalleeSaveMethod(CalleeSaveType type) const { 402 return callee_save_methods_[type] != 0u; 403 } 404 405 ArtMethod* GetCalleeSaveMethod(CalleeSaveType type) 406 SHARED_REQUIRES(Locks::mutator_lock_); 407 408 ArtMethod* GetCalleeSaveMethodUnchecked(CalleeSaveType type) 409 SHARED_REQUIRES(Locks::mutator_lock_); 410 411 QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const { 412 return callee_save_method_frame_infos_[type]; 413 } 414 415 QuickMethodFrameInfo GetRuntimeMethodFrameInfo(ArtMethod* method) 416 SHARED_REQUIRES(Locks::mutator_lock_); 417 418 static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) { 419 return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]); 420 } 421 422 InstructionSet GetInstructionSet() const { 423 return instruction_set_; 424 } 425 426 void SetInstructionSet(InstructionSet instruction_set); 427 428 void SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type); 429 430 ArtMethod* CreateCalleeSaveMethod() SHARED_REQUIRES(Locks::mutator_lock_); 431 432 int32_t GetStat(int kind); 433 434 RuntimeStats* GetStats() { 435 return &stats_; 436 } 437 438 bool HasStatsEnabled() const { 439 return stats_enabled_; 440 } 441 442 void ResetStats(int kinds); 443 444 void SetStatsEnabled(bool new_state) 445 REQUIRES(!Locks::instrument_entrypoints_lock_, !Locks::mutator_lock_); 446 447 enum class NativeBridgeAction { // private 448 kUnload, 449 kInitialize 450 }; 451 452 jit::Jit* GetJit() { 453 return jit_.get(); 454 } 455 bool UseJit() const { 456 return jit_.get() != nullptr; 457 } 458 459 void PreZygoteFork(); 460 bool InitZygote(); 461 void InitNonZygoteOrPostFork( 462 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa); 463 464 const instrumentation::Instrumentation* GetInstrumentation() const { 465 return &instrumentation_; 466 } 467 468 instrumentation::Instrumentation* GetInstrumentation() { 469 return &instrumentation_; 470 } 471 472 void RegisterAppInfo(const std::vector<std::string>& code_paths, 473 const std::string& profile_output_filename, 474 const std::string& foreign_dex_profile_path, 475 const std::string& app_dir); 476 void NotifyDexLoaded(const std::string& dex_location); 477 478 // Transaction support. 479 bool IsActiveTransaction() const { 480 return preinitialization_transaction_ != nullptr; 481 } 482 void EnterTransactionMode(Transaction* transaction); 483 void ExitTransactionMode(); 484 bool IsTransactionAborted() const; 485 486 void AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) 487 SHARED_REQUIRES(Locks::mutator_lock_); 488 void ThrowTransactionAbortError(Thread* self) 489 SHARED_REQUIRES(Locks::mutator_lock_); 490 491 void RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, uint8_t value, 492 bool is_volatile) const; 493 void RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, int8_t value, 494 bool is_volatile) const; 495 void RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, uint16_t value, 496 bool is_volatile) const; 497 void RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, int16_t value, 498 bool is_volatile) const; 499 void RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, uint32_t value, 500 bool is_volatile) const; 501 void RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, uint64_t value, 502 bool is_volatile) const; 503 void RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 504 mirror::Object* value, bool is_volatile) const; 505 void RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const 506 SHARED_REQUIRES(Locks::mutator_lock_); 507 void RecordStrongStringInsertion(mirror::String* s) const 508 REQUIRES(Locks::intern_table_lock_); 509 void RecordWeakStringInsertion(mirror::String* s) const 510 REQUIRES(Locks::intern_table_lock_); 511 void RecordStrongStringRemoval(mirror::String* s) const 512 REQUIRES(Locks::intern_table_lock_); 513 void RecordWeakStringRemoval(mirror::String* s) const 514 REQUIRES(Locks::intern_table_lock_); 515 516 void SetFaultMessage(const std::string& message) REQUIRES(!fault_message_lock_); 517 // Only read by the signal handler, NO_THREAD_SAFETY_ANALYSIS to prevent lock order violations 518 // with the unexpected_signal_lock_. 519 const std::string& GetFaultMessage() NO_THREAD_SAFETY_ANALYSIS { 520 return fault_message_; 521 } 522 523 void AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* arg_vector) const; 524 525 bool ExplicitStackOverflowChecks() const { 526 return !implicit_so_checks_; 527 } 528 529 bool IsVerificationEnabled() const; 530 bool IsVerificationSoftFail() const; 531 532 bool IsDexFileFallbackEnabled() const { 533 return allow_dex_file_fallback_; 534 } 535 536 const std::vector<std::string>& GetCpuAbilist() const { 537 return cpu_abilist_; 538 } 539 540 bool IsRunningOnMemoryTool() const { 541 return is_running_on_memory_tool_; 542 } 543 544 void SetTargetSdkVersion(int32_t version) { 545 target_sdk_version_ = version; 546 } 547 548 int32_t GetTargetSdkVersion() const { 549 return target_sdk_version_; 550 } 551 552 uint32_t GetZygoteMaxFailedBoots() const { 553 return zygote_max_failed_boots_; 554 } 555 556 bool AreExperimentalFlagsEnabled(ExperimentalFlags flags) { 557 return (experimental_flags_ & flags) != ExperimentalFlags::kNone; 558 } 559 560 lambda::BoxTable* GetLambdaBoxTable() const { 561 return lambda_box_table_.get(); 562 } 563 564 // Create the JIT and instrumentation and code cache. 565 void CreateJit(); 566 567 ArenaPool* GetArenaPool() { 568 return arena_pool_.get(); 569 } 570 ArenaPool* GetJitArenaPool() { 571 return jit_arena_pool_.get(); 572 } 573 const ArenaPool* GetArenaPool() const { 574 return arena_pool_.get(); 575 } 576 577 void ReclaimArenaPoolMemory(); 578 579 LinearAlloc* GetLinearAlloc() { 580 return linear_alloc_.get(); 581 } 582 583 jit::JitOptions* GetJITOptions() { 584 return jit_options_.get(); 585 } 586 587 bool IsDebuggable() const; 588 589 bool IsNativeDebuggable() const { 590 return is_native_debuggable_; 591 } 592 593 void SetNativeDebuggable(bool value) { 594 is_native_debuggable_ = value; 595 } 596 597 // Returns the build fingerprint, if set. Otherwise an empty string is returned. 598 std::string GetFingerprint() { 599 return fingerprint_; 600 } 601 602 // Called from class linker. 603 void SetSentinel(mirror::Object* sentinel) SHARED_REQUIRES(Locks::mutator_lock_); 604 605 // Create a normal LinearAlloc or low 4gb version if we are 64 bit AOT compiler. 606 LinearAlloc* CreateLinearAlloc(); 607 608 OatFileManager& GetOatFileManager() const { 609 DCHECK(oat_file_manager_ != nullptr); 610 return *oat_file_manager_; 611 } 612 613 double GetHashTableMinLoadFactor() const; 614 double GetHashTableMaxLoadFactor() const; 615 616 void SetSafeMode(bool mode) { 617 safe_mode_ = mode; 618 } 619 620 bool GetDumpNativeStackOnSigQuit() const { 621 return dump_native_stack_on_sig_quit_; 622 } 623 624 bool GetPrunedDalvikCache() const { 625 return pruned_dalvik_cache_; 626 } 627 628 void SetPrunedDalvikCache(bool pruned) { 629 pruned_dalvik_cache_ = pruned; 630 } 631 632 void UpdateProcessState(ProcessState process_state); 633 634 // Returns true if we currently care about long mutator pause. 635 bool InJankPerceptibleProcessState() const { 636 return process_state_ == kProcessStateJankPerceptible; 637 } 638 639 void SetZygoteNoThreadSection(bool val) { 640 zygote_no_threads_ = val; 641 } 642 643 bool IsZygoteNoThreadSection() const { 644 return zygote_no_threads_; 645 } 646 647 private: 648 static void InitPlatformSignalHandlers(); 649 650 Runtime(); 651 652 void BlockSignals(); 653 654 bool Init(RuntimeArgumentMap&& runtime_options) 655 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 656 void InitNativeMethods() REQUIRES(!Locks::mutator_lock_); 657 void InitThreadGroups(Thread* self); 658 void RegisterRuntimeNativeMethods(JNIEnv* env); 659 660 void StartDaemonThreads(); 661 void StartSignalCatcher(); 662 663 void MaybeSaveJitProfilingInfo(); 664 665 // A pointer to the active runtime or null. 666 static Runtime* instance_; 667 668 // NOTE: these must match the gc::ProcessState values as they come directly from the framework. 669 static constexpr int kProfileForground = 0; 670 static constexpr int kProfileBackground = 1; 671 672 // 64 bit so that we can share the same asm offsets for both 32 and 64 bits. 673 uint64_t callee_save_methods_[kLastCalleeSaveType]; 674 GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_; 675 GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_; 676 ArtMethod* resolution_method_; 677 ArtMethod* imt_conflict_method_; 678 // Unresolved method has the same behavior as the conflict method, it is used by the class linker 679 // for differentiating between unfilled imt slots vs conflict slots in superclasses. 680 ArtMethod* imt_unimplemented_method_; 681 682 // Special sentinel object used to invalid conditions in JNI (cleared weak references) and 683 // JDWP (invalid references). 684 GcRoot<mirror::Object> sentinel_; 685 686 InstructionSet instruction_set_; 687 QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType]; 688 689 CompilerCallbacks* compiler_callbacks_; 690 bool is_zygote_; 691 bool must_relocate_; 692 bool is_concurrent_gc_enabled_; 693 bool is_explicit_gc_disabled_; 694 bool dex2oat_enabled_; 695 bool image_dex2oat_enabled_; 696 697 std::string compiler_executable_; 698 std::string patchoat_executable_; 699 std::vector<std::string> compiler_options_; 700 std::vector<std::string> image_compiler_options_; 701 std::string image_location_; 702 703 std::string boot_class_path_string_; 704 std::string class_path_string_; 705 std::vector<std::string> properties_; 706 707 // The default stack size for managed threads created by the runtime. 708 size_t default_stack_size_; 709 710 gc::Heap* heap_; 711 712 std::unique_ptr<ArenaPool> jit_arena_pool_; 713 std::unique_ptr<ArenaPool> arena_pool_; 714 // Special low 4gb pool for compiler linear alloc. We need ArtFields to be in low 4gb if we are 715 // compiling using a 32 bit image on a 64 bit compiler in case we resolve things in the image 716 // since the field arrays are int arrays in this case. 717 std::unique_ptr<ArenaPool> low_4gb_arena_pool_; 718 719 // Shared linear alloc for now. 720 std::unique_ptr<LinearAlloc> linear_alloc_; 721 722 // The number of spins that are done before thread suspension is used to forcibly inflate. 723 size_t max_spins_before_thin_lock_inflation_; 724 MonitorList* monitor_list_; 725 MonitorPool* monitor_pool_; 726 727 ThreadList* thread_list_; 728 729 InternTable* intern_table_; 730 731 ClassLinker* class_linker_; 732 733 SignalCatcher* signal_catcher_; 734 std::string stack_trace_file_; 735 736 JavaVMExt* java_vm_; 737 738 std::unique_ptr<jit::Jit> jit_; 739 std::unique_ptr<jit::JitOptions> jit_options_; 740 741 std::unique_ptr<lambda::BoxTable> lambda_box_table_; 742 743 // Fault message, printed when we get a SIGSEGV. 744 Mutex fault_message_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 745 std::string fault_message_ GUARDED_BY(fault_message_lock_); 746 747 // A non-zero value indicates that a thread has been created but not yet initialized. Guarded by 748 // the shutdown lock so that threads aren't born while we're shutting down. 749 size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_); 750 751 // Waited upon until no threads are being born. 752 std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_); 753 754 // Set when runtime shutdown is past the point that new threads may attach. 755 bool shutting_down_ GUARDED_BY(Locks::runtime_shutdown_lock_); 756 757 // The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. 758 bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_); 759 760 bool started_; 761 762 // New flag added which tells us if the runtime has finished starting. If 763 // this flag is set then the Daemon threads are created and the class loader 764 // is created. This flag is needed for knowing if its safe to request CMS. 765 bool finished_starting_; 766 767 // Hooks supported by JNI_CreateJavaVM 768 jint (*vfprintf_)(FILE* stream, const char* format, va_list ap); 769 void (*exit_)(jint status); 770 void (*abort_)(); 771 772 bool stats_enabled_; 773 RuntimeStats stats_; 774 775 const bool is_running_on_memory_tool_; 776 777 std::string profile_output_filename_; 778 ProfilerOptions profiler_options_; 779 780 std::unique_ptr<TraceConfig> trace_config_; 781 782 instrumentation::Instrumentation instrumentation_; 783 784 jobject main_thread_group_; 785 jobject system_thread_group_; 786 787 // As returned by ClassLoader.getSystemClassLoader(). 788 jobject system_class_loader_; 789 790 // If true, then we dump the GC cumulative timings on shutdown. 791 bool dump_gc_performance_on_shutdown_; 792 793 // Transaction used for pre-initializing classes at compilation time. 794 Transaction* preinitialization_transaction_; 795 796 // If kNone, verification is disabled. kEnable by default. 797 verifier::VerifyMode verify_; 798 799 // If true, the runtime may use dex files directly with the interpreter if an oat file is not 800 // available/usable. 801 bool allow_dex_file_fallback_; 802 803 // List of supported cpu abis. 804 std::vector<std::string> cpu_abilist_; 805 806 // Specifies target SDK version to allow workarounds for certain API levels. 807 int32_t target_sdk_version_; 808 809 // Implicit checks flags. 810 bool implicit_null_checks_; // NullPointer checks are implicit. 811 bool implicit_so_checks_; // StackOverflow checks are implicit. 812 bool implicit_suspend_checks_; // Thread suspension checks are implicit. 813 814 // Whether or not the sig chain (and implicitly the fault handler) should be 815 // disabled. Tools like dex2oat or patchoat don't need them. This enables 816 // building a statically link version of dex2oat. 817 bool no_sig_chain_; 818 819 // Force the use of native bridge even if the app ISA matches the runtime ISA. 820 bool force_native_bridge_; 821 822 // Whether or not a native bridge has been loaded. 823 // 824 // The native bridge allows running native code compiled for a foreign ISA. The way it works is, 825 // if standard dlopen fails to load native library associated with native activity, it calls to 826 // the native bridge to load it and then gets the trampoline for the entry to native activity. 827 // 828 // The option 'native_bridge_library_filename' specifies the name of the native bridge. 829 // When non-empty the native bridge will be loaded from the given file. An empty value means 830 // that there's no native bridge. 831 bool is_native_bridge_loaded_; 832 833 // Whether we are running under native debugger. 834 bool is_native_debuggable_; 835 836 // The maximum number of failed boots we allow before pruning the dalvik cache 837 // and trying again. This option is only inspected when we're running as a 838 // zygote. 839 uint32_t zygote_max_failed_boots_; 840 841 // Enable experimental opcodes that aren't fully specified yet. The intent is to 842 // eventually publish them as public-usable opcodes, but they aren't ready yet. 843 // 844 // Experimental opcodes should not be used by other production code. 845 ExperimentalFlags experimental_flags_; 846 847 // Contains the build fingerprint, if given as a parameter. 848 std::string fingerprint_; 849 850 // Oat file manager, keeps track of what oat files are open. 851 OatFileManager* oat_file_manager_; 852 853 // Whether or not we are on a low RAM device. 854 bool is_low_memory_mode_; 855 856 // Whether the application should run in safe mode, that is, interpreter only. 857 bool safe_mode_; 858 859 // Whether threads should dump their native stack on SIGQUIT. 860 bool dump_native_stack_on_sig_quit_; 861 862 // Whether the dalvik cache was pruned when initializing the runtime. 863 bool pruned_dalvik_cache_; 864 865 // Whether or not we currently care about pause times. 866 ProcessState process_state_; 867 868 // Whether zygote code is in a section that should not start threads. 869 bool zygote_no_threads_; 870 871 DISALLOW_COPY_AND_ASSIGN(Runtime); 872}; 873std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs); 874 875} // namespace art 876 877#endif // ART_RUNTIME_RUNTIME_H_ 878