runtime.h revision 415d8070e37c20dfb7e6dc37e74fdb5fffc2022e
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 SetImtConflictMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 387 void SetImtUnimplementedMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_); 388 389 ArtMethod* CreateImtConflictMethod(LinearAlloc* linear_alloc) 390 SHARED_REQUIRES(Locks::mutator_lock_); 391 392 // Returns a special method that describes all callee saves being spilled to the stack. 393 enum CalleeSaveType { 394 kSaveAll, 395 kRefsOnly, 396 kRefsAndArgs, 397 kLastCalleeSaveType // Value used for iteration 398 }; 399 400 bool HasCalleeSaveMethod(CalleeSaveType type) const { 401 return callee_save_methods_[type] != 0u; 402 } 403 404 ArtMethod* GetCalleeSaveMethod(CalleeSaveType type) 405 SHARED_REQUIRES(Locks::mutator_lock_); 406 407 ArtMethod* GetCalleeSaveMethodUnchecked(CalleeSaveType type) 408 SHARED_REQUIRES(Locks::mutator_lock_); 409 410 QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const { 411 return callee_save_method_frame_infos_[type]; 412 } 413 414 QuickMethodFrameInfo GetRuntimeMethodFrameInfo(ArtMethod* method) 415 SHARED_REQUIRES(Locks::mutator_lock_); 416 417 static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) { 418 return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]); 419 } 420 421 InstructionSet GetInstructionSet() const { 422 return instruction_set_; 423 } 424 425 void SetInstructionSet(InstructionSet instruction_set); 426 427 void SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type); 428 429 ArtMethod* CreateCalleeSaveMethod() SHARED_REQUIRES(Locks::mutator_lock_); 430 431 int32_t GetStat(int kind); 432 433 RuntimeStats* GetStats() { 434 return &stats_; 435 } 436 437 bool HasStatsEnabled() const { 438 return stats_enabled_; 439 } 440 441 void ResetStats(int kinds); 442 443 void SetStatsEnabled(bool new_state) 444 REQUIRES(!Locks::instrument_entrypoints_lock_, !Locks::mutator_lock_); 445 446 enum class NativeBridgeAction { // private 447 kUnload, 448 kInitialize 449 }; 450 451 jit::Jit* GetJit() { 452 return jit_.get(); 453 } 454 bool UseJit() const { 455 return jit_.get() != nullptr; 456 } 457 458 void PreZygoteFork(); 459 bool InitZygote(); 460 void InitNonZygoteOrPostFork( 461 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa); 462 463 const instrumentation::Instrumentation* GetInstrumentation() const { 464 return &instrumentation_; 465 } 466 467 instrumentation::Instrumentation* GetInstrumentation() { 468 return &instrumentation_; 469 } 470 471 void RegisterAppInfo(const std::vector<std::string>& code_paths, 472 const std::string& profile_output_filename, 473 const std::string& foreign_dex_profile_path, 474 const std::string& app_dir); 475 void NotifyDexLoaded(const std::string& dex_location); 476 477 // Transaction support. 478 bool IsActiveTransaction() const { 479 return preinitialization_transaction_ != nullptr; 480 } 481 void EnterTransactionMode(Transaction* transaction); 482 void ExitTransactionMode(); 483 bool IsTransactionAborted() const; 484 485 void AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) 486 SHARED_REQUIRES(Locks::mutator_lock_); 487 void ThrowTransactionAbortError(Thread* self) 488 SHARED_REQUIRES(Locks::mutator_lock_); 489 490 void RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, uint8_t value, 491 bool is_volatile) const; 492 void RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, int8_t value, 493 bool is_volatile) const; 494 void RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, uint16_t value, 495 bool is_volatile) const; 496 void RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, int16_t value, 497 bool is_volatile) const; 498 void RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, uint32_t value, 499 bool is_volatile) const; 500 void RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, uint64_t value, 501 bool is_volatile) const; 502 void RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 503 mirror::Object* value, bool is_volatile) const; 504 void RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const 505 SHARED_REQUIRES(Locks::mutator_lock_); 506 void RecordStrongStringInsertion(mirror::String* s) const 507 REQUIRES(Locks::intern_table_lock_); 508 void RecordWeakStringInsertion(mirror::String* s) const 509 REQUIRES(Locks::intern_table_lock_); 510 void RecordStrongStringRemoval(mirror::String* s) const 511 REQUIRES(Locks::intern_table_lock_); 512 void RecordWeakStringRemoval(mirror::String* s) const 513 REQUIRES(Locks::intern_table_lock_); 514 515 void SetFaultMessage(const std::string& message) REQUIRES(!fault_message_lock_); 516 // Only read by the signal handler, NO_THREAD_SAFETY_ANALYSIS to prevent lock order violations 517 // with the unexpected_signal_lock_. 518 const std::string& GetFaultMessage() NO_THREAD_SAFETY_ANALYSIS { 519 return fault_message_; 520 } 521 522 void AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* arg_vector) const; 523 524 bool ExplicitStackOverflowChecks() const { 525 return !implicit_so_checks_; 526 } 527 528 bool IsVerificationEnabled() const; 529 bool IsVerificationSoftFail() const; 530 531 bool IsDexFileFallbackEnabled() const { 532 return allow_dex_file_fallback_; 533 } 534 535 const std::vector<std::string>& GetCpuAbilist() const { 536 return cpu_abilist_; 537 } 538 539 bool IsRunningOnMemoryTool() const { 540 return is_running_on_memory_tool_; 541 } 542 543 void SetTargetSdkVersion(int32_t version) { 544 target_sdk_version_ = version; 545 } 546 547 int32_t GetTargetSdkVersion() const { 548 return target_sdk_version_; 549 } 550 551 uint32_t GetZygoteMaxFailedBoots() const { 552 return zygote_max_failed_boots_; 553 } 554 555 bool AreExperimentalFlagsEnabled(ExperimentalFlags flags) { 556 return (experimental_flags_ & flags) != ExperimentalFlags::kNone; 557 } 558 559 lambda::BoxTable* GetLambdaBoxTable() const { 560 return lambda_box_table_.get(); 561 } 562 563 // Create the JIT and instrumentation and code cache. 564 void CreateJit(); 565 566 ArenaPool* GetArenaPool() { 567 return arena_pool_.get(); 568 } 569 ArenaPool* GetJitArenaPool() { 570 return jit_arena_pool_.get(); 571 } 572 const ArenaPool* GetArenaPool() const { 573 return arena_pool_.get(); 574 } 575 576 void ReclaimArenaPoolMemory(); 577 578 LinearAlloc* GetLinearAlloc() { 579 return linear_alloc_.get(); 580 } 581 582 jit::JitOptions* GetJITOptions() { 583 return jit_options_.get(); 584 } 585 586 bool IsDebuggable() const; 587 588 bool IsNativeDebuggable() const { 589 return is_native_debuggable_; 590 } 591 592 void SetNativeDebuggable(bool value) { 593 is_native_debuggable_ = value; 594 } 595 596 // Returns the build fingerprint, if set. Otherwise an empty string is returned. 597 std::string GetFingerprint() { 598 return fingerprint_; 599 } 600 601 // Called from class linker. 602 void SetSentinel(mirror::Object* sentinel) SHARED_REQUIRES(Locks::mutator_lock_); 603 604 // Create a normal LinearAlloc or low 4gb version if we are 64 bit AOT compiler. 605 LinearAlloc* CreateLinearAlloc(); 606 607 OatFileManager& GetOatFileManager() const { 608 DCHECK(oat_file_manager_ != nullptr); 609 return *oat_file_manager_; 610 } 611 612 double GetHashTableMinLoadFactor() const; 613 double GetHashTableMaxLoadFactor() const; 614 615 void SetSafeMode(bool mode) { 616 safe_mode_ = mode; 617 } 618 619 bool GetDumpNativeStackOnSigQuit() const { 620 return dump_native_stack_on_sig_quit_; 621 } 622 623 bool GetPrunedDalvikCache() const { 624 return pruned_dalvik_cache_; 625 } 626 627 void SetPrunedDalvikCache(bool pruned) { 628 pruned_dalvik_cache_ = pruned; 629 } 630 631 void UpdateProcessState(ProcessState process_state); 632 633 // Returns true if we currently care about long mutator pause. 634 bool InJankPerceptibleProcessState() const { 635 return process_state_ == kProcessStateJankPerceptible; 636 } 637 638 void SetZygoteNoThreadSection(bool val) { 639 zygote_no_threads_ = val; 640 } 641 642 bool IsZygoteNoThreadSection() const { 643 return zygote_no_threads_; 644 } 645 646 private: 647 static void InitPlatformSignalHandlers(); 648 649 Runtime(); 650 651 void BlockSignals(); 652 653 bool Init(RuntimeArgumentMap&& runtime_options) 654 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 655 void InitNativeMethods() REQUIRES(!Locks::mutator_lock_); 656 void InitThreadGroups(Thread* self); 657 void RegisterRuntimeNativeMethods(JNIEnv* env); 658 659 void StartDaemonThreads(); 660 void StartSignalCatcher(); 661 662 void MaybeSaveJitProfilingInfo(); 663 664 // A pointer to the active runtime or null. 665 static Runtime* instance_; 666 667 // NOTE: these must match the gc::ProcessState values as they come directly from the framework. 668 static constexpr int kProfileForground = 0; 669 static constexpr int kProfileBackground = 1; 670 671 // 64 bit so that we can share the same asm offsets for both 32 and 64 bits. 672 uint64_t callee_save_methods_[kLastCalleeSaveType]; 673 GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_; 674 GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_; 675 ArtMethod* resolution_method_; 676 ArtMethod* imt_conflict_method_; 677 // Unresolved method has the same behavior as the conflict method, it is used by the class linker 678 // for differentiating between unfilled imt slots vs conflict slots in superclasses. 679 ArtMethod* imt_unimplemented_method_; 680 681 // Special sentinel object used to invalid conditions in JNI (cleared weak references) and 682 // JDWP (invalid references). 683 GcRoot<mirror::Object> sentinel_; 684 685 InstructionSet instruction_set_; 686 QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType]; 687 688 CompilerCallbacks* compiler_callbacks_; 689 bool is_zygote_; 690 bool must_relocate_; 691 bool is_concurrent_gc_enabled_; 692 bool is_explicit_gc_disabled_; 693 bool dex2oat_enabled_; 694 bool image_dex2oat_enabled_; 695 696 std::string compiler_executable_; 697 std::string patchoat_executable_; 698 std::vector<std::string> compiler_options_; 699 std::vector<std::string> image_compiler_options_; 700 std::string image_location_; 701 702 std::string boot_class_path_string_; 703 std::string class_path_string_; 704 std::vector<std::string> properties_; 705 706 // The default stack size for managed threads created by the runtime. 707 size_t default_stack_size_; 708 709 gc::Heap* heap_; 710 711 std::unique_ptr<ArenaPool> jit_arena_pool_; 712 std::unique_ptr<ArenaPool> arena_pool_; 713 // Special low 4gb pool for compiler linear alloc. We need ArtFields to be in low 4gb if we are 714 // compiling using a 32 bit image on a 64 bit compiler in case we resolve things in the image 715 // since the field arrays are int arrays in this case. 716 std::unique_ptr<ArenaPool> low_4gb_arena_pool_; 717 718 // Shared linear alloc for now. 719 std::unique_ptr<LinearAlloc> linear_alloc_; 720 721 // The number of spins that are done before thread suspension is used to forcibly inflate. 722 size_t max_spins_before_thin_lock_inflation_; 723 MonitorList* monitor_list_; 724 MonitorPool* monitor_pool_; 725 726 ThreadList* thread_list_; 727 728 InternTable* intern_table_; 729 730 ClassLinker* class_linker_; 731 732 SignalCatcher* signal_catcher_; 733 std::string stack_trace_file_; 734 735 JavaVMExt* java_vm_; 736 737 std::unique_ptr<jit::Jit> jit_; 738 std::unique_ptr<jit::JitOptions> jit_options_; 739 740 std::unique_ptr<lambda::BoxTable> lambda_box_table_; 741 742 // Fault message, printed when we get a SIGSEGV. 743 Mutex fault_message_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 744 std::string fault_message_ GUARDED_BY(fault_message_lock_); 745 746 // A non-zero value indicates that a thread has been created but not yet initialized. Guarded by 747 // the shutdown lock so that threads aren't born while we're shutting down. 748 size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_); 749 750 // Waited upon until no threads are being born. 751 std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_); 752 753 // Set when runtime shutdown is past the point that new threads may attach. 754 bool shutting_down_ GUARDED_BY(Locks::runtime_shutdown_lock_); 755 756 // The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. 757 bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_); 758 759 bool started_; 760 761 // New flag added which tells us if the runtime has finished starting. If 762 // this flag is set then the Daemon threads are created and the class loader 763 // is created. This flag is needed for knowing if its safe to request CMS. 764 bool finished_starting_; 765 766 // Hooks supported by JNI_CreateJavaVM 767 jint (*vfprintf_)(FILE* stream, const char* format, va_list ap); 768 void (*exit_)(jint status); 769 void (*abort_)(); 770 771 bool stats_enabled_; 772 RuntimeStats stats_; 773 774 const bool is_running_on_memory_tool_; 775 776 std::string profile_output_filename_; 777 ProfilerOptions profiler_options_; 778 779 std::unique_ptr<TraceConfig> trace_config_; 780 781 instrumentation::Instrumentation instrumentation_; 782 783 jobject main_thread_group_; 784 jobject system_thread_group_; 785 786 // As returned by ClassLoader.getSystemClassLoader(). 787 jobject system_class_loader_; 788 789 // If true, then we dump the GC cumulative timings on shutdown. 790 bool dump_gc_performance_on_shutdown_; 791 792 // Transaction used for pre-initializing classes at compilation time. 793 Transaction* preinitialization_transaction_; 794 795 // If kNone, verification is disabled. kEnable by default. 796 verifier::VerifyMode verify_; 797 798 // If true, the runtime may use dex files directly with the interpreter if an oat file is not 799 // available/usable. 800 bool allow_dex_file_fallback_; 801 802 // List of supported cpu abis. 803 std::vector<std::string> cpu_abilist_; 804 805 // Specifies target SDK version to allow workarounds for certain API levels. 806 int32_t target_sdk_version_; 807 808 // Implicit checks flags. 809 bool implicit_null_checks_; // NullPointer checks are implicit. 810 bool implicit_so_checks_; // StackOverflow checks are implicit. 811 bool implicit_suspend_checks_; // Thread suspension checks are implicit. 812 813 // Whether or not the sig chain (and implicitly the fault handler) should be 814 // disabled. Tools like dex2oat or patchoat don't need them. This enables 815 // building a statically link version of dex2oat. 816 bool no_sig_chain_; 817 818 // Force the use of native bridge even if the app ISA matches the runtime ISA. 819 bool force_native_bridge_; 820 821 // Whether or not a native bridge has been loaded. 822 // 823 // The native bridge allows running native code compiled for a foreign ISA. The way it works is, 824 // if standard dlopen fails to load native library associated with native activity, it calls to 825 // the native bridge to load it and then gets the trampoline for the entry to native activity. 826 // 827 // The option 'native_bridge_library_filename' specifies the name of the native bridge. 828 // When non-empty the native bridge will be loaded from the given file. An empty value means 829 // that there's no native bridge. 830 bool is_native_bridge_loaded_; 831 832 // Whether we are running under native debugger. 833 bool is_native_debuggable_; 834 835 // The maximum number of failed boots we allow before pruning the dalvik cache 836 // and trying again. This option is only inspected when we're running as a 837 // zygote. 838 uint32_t zygote_max_failed_boots_; 839 840 // Enable experimental opcodes that aren't fully specified yet. The intent is to 841 // eventually publish them as public-usable opcodes, but they aren't ready yet. 842 // 843 // Experimental opcodes should not be used by other production code. 844 ExperimentalFlags experimental_flags_; 845 846 // Contains the build fingerprint, if given as a parameter. 847 std::string fingerprint_; 848 849 // Oat file manager, keeps track of what oat files are open. 850 OatFileManager* oat_file_manager_; 851 852 // Whether or not we are on a low RAM device. 853 bool is_low_memory_mode_; 854 855 // Whether the application should run in safe mode, that is, interpreter only. 856 bool safe_mode_; 857 858 // Whether threads should dump their native stack on SIGQUIT. 859 bool dump_native_stack_on_sig_quit_; 860 861 // Whether the dalvik cache was pruned when initializing the runtime. 862 bool pruned_dalvik_cache_; 863 864 // Whether or not we currently care about pause times. 865 ProcessState process_state_; 866 867 // Whether zygote code is in a section that should not start threads. 868 bool zygote_no_threads_; 869 870 DISALLOW_COPY_AND_ASSIGN(Runtime); 871}; 872std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs); 873 874} // namespace art 875 876#endif // ART_RUNTIME_RUNTIME_H_ 877