runtime.h revision b3b173bbbd1d1cbad555de13c3fa6765f5078bce
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ART_RUNTIME_RUNTIME_H_ 18#define ART_RUNTIME_RUNTIME_H_ 19 20#include <jni.h> 21#include <stdio.h> 22 23#include <iosfwd> 24#include <set> 25#include <string> 26#include <utility> 27#include <vector> 28 29#include "arch/instruction_set.h" 30#include "base/allocator.h" 31#include "compiler_callbacks.h" 32#include "gc_root.h" 33#include "instrumentation.h" 34#include "jobject_comparator.h" 35#include "object_callbacks.h" 36#include "offsets.h" 37#include "profiler_options.h" 38#include "quick/quick_method_frame_info.h" 39#include "runtime_stats.h" 40#include "safe_map.h" 41 42namespace art { 43 44namespace gc { 45 class Heap; 46 namespace collector { 47 class GarbageCollector; 48 } // namespace collector 49} // namespace gc 50namespace mirror { 51 class ArtMethod; 52 class ClassLoader; 53 class Array; 54 template<class T> class ObjectArray; 55 template<class T> class PrimitiveArray; 56 typedef PrimitiveArray<int8_t> ByteArray; 57 class String; 58 class Throwable; 59} // namespace mirror 60namespace verifier { 61 class MethodVerifier; 62} // namespace verifier 63class ClassLinker; 64class Closure; 65class DexFile; 66class InternTable; 67class JavaVMExt; 68class MonitorList; 69class MonitorPool; 70class NullPointerHandler; 71class SignalCatcher; 72class StackOverflowHandler; 73class SuspensionHandler; 74class ThreadList; 75class Trace; 76class Transaction; 77 78typedef std::vector<std::pair<std::string, const void*>> RuntimeOptions; 79 80// Not all combinations of flags are valid. You may not visit all roots as well as the new roots 81// (no logical reason to do this). You also may not start logging new roots and stop logging new 82// roots (also no logical reason to do this). 83enum VisitRootFlags : uint8_t { 84 kVisitRootFlagAllRoots = 0x1, 85 kVisitRootFlagNewRoots = 0x2, 86 kVisitRootFlagStartLoggingNewRoots = 0x4, 87 kVisitRootFlagStopLoggingNewRoots = 0x8, 88 kVisitRootFlagClearRootLog = 0x10, 89}; 90 91class Runtime { 92 public: 93 // Creates and initializes a new runtime. 94 static bool Create(const RuntimeOptions& options, bool ignore_unrecognized) 95 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 96 97 bool IsCompiler() const { 98 return compiler_callbacks_ != nullptr; 99 } 100 101 bool CanRelocate() const { 102 return !IsCompiler() || compiler_callbacks_->IsRelocationPossible(); 103 } 104 105 bool ShouldRelocate() const { 106 return must_relocate_ && CanRelocate(); 107 } 108 109 bool MustRelocateIfPossible() const { 110 return must_relocate_; 111 } 112 113 bool IsDex2OatEnabled() const { 114 return dex2oat_enabled_ && IsImageDex2OatEnabled(); 115 } 116 117 bool IsImageDex2OatEnabled() const { 118 return image_dex2oat_enabled_; 119 } 120 121 CompilerCallbacks* GetCompilerCallbacks() { 122 return compiler_callbacks_; 123 } 124 125 bool IsZygote() const { 126 return is_zygote_; 127 } 128 129 bool IsExplicitGcDisabled() const { 130 return is_explicit_gc_disabled_; 131 } 132 133 std::string GetCompilerExecutable() const; 134 std::string GetPatchoatExecutable() const; 135 136 const std::vector<std::string>& GetCompilerOptions() const { 137 return compiler_options_; 138 } 139 140 void AddCompilerOption(std::string option) { 141 compiler_options_.push_back(option); 142 } 143 144 const std::vector<std::string>& GetImageCompilerOptions() const { 145 return image_compiler_options_; 146 } 147 148 const std::string& GetImageLocation() const { 149 return image_location_; 150 } 151 152 const ProfilerOptions& GetProfilerOptions() const { 153 return profiler_options_; 154 } 155 156 // Starts a runtime, which may cause threads to be started and code to run. 157 bool Start() UNLOCK_FUNCTION(Locks::mutator_lock_); 158 159 bool IsShuttingDown(Thread* self); 160 bool IsShuttingDownLocked() const EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 161 return shutting_down_; 162 } 163 164 size_t NumberOfThreadsBeingBorn() const EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 165 return threads_being_born_; 166 } 167 168 void StartThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 169 threads_being_born_++; 170 } 171 172 void EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_); 173 174 bool IsStarted() const { 175 return started_; 176 } 177 178 bool IsFinishedStarting() const { 179 return finished_starting_; 180 } 181 182 static Runtime* Current() { 183 return instance_; 184 } 185 186 // Aborts semi-cleanly. Used in the implementation of LOG(FATAL), which most 187 // callers should prefer. 188 [[noreturn]] static void Abort() LOCKS_EXCLUDED(Locks::abort_lock_); 189 190 // Returns the "main" ThreadGroup, used when attaching user threads. 191 jobject GetMainThreadGroup() const; 192 193 // Returns the "system" ThreadGroup, used when attaching our internal threads. 194 jobject GetSystemThreadGroup() const; 195 196 // Returns the system ClassLoader which represents the CLASSPATH. 197 jobject GetSystemClassLoader() const; 198 199 // Attaches the calling native thread to the runtime. 200 bool AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 201 bool create_peer); 202 203 void CallExitHook(jint status); 204 205 // Detaches the current native thread from the runtime. 206 void DetachCurrentThread() LOCKS_EXCLUDED(Locks::mutator_lock_); 207 208 void DumpForSigQuit(std::ostream& os); 209 void DumpLockHolders(std::ostream& os); 210 211 ~Runtime(); 212 213 const std::string& GetBootClassPathString() const { 214 return boot_class_path_string_; 215 } 216 217 const std::string& GetClassPathString() const { 218 return class_path_string_; 219 } 220 221 ClassLinker* GetClassLinker() const { 222 return class_linker_; 223 } 224 225 size_t GetDefaultStackSize() const { 226 return default_stack_size_; 227 } 228 229 gc::Heap* GetHeap() const { 230 return heap_; 231 } 232 233 InternTable* GetInternTable() const { 234 DCHECK(intern_table_ != NULL); 235 return intern_table_; 236 } 237 238 JavaVMExt* GetJavaVM() const { 239 return java_vm_; 240 } 241 242 size_t GetMaxSpinsBeforeThinkLockInflation() const { 243 return max_spins_before_thin_lock_inflation_; 244 } 245 246 MonitorList* GetMonitorList() const { 247 return monitor_list_; 248 } 249 250 MonitorPool* GetMonitorPool() const { 251 return monitor_pool_; 252 } 253 254 // Is the given object the special object used to mark a cleared JNI weak global? 255 bool IsClearedJniWeakGlobal(mirror::Object* obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 256 257 // Get the special object used to mark a cleared JNI weak global. 258 mirror::Object* GetClearedJniWeakGlobal() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 259 260 mirror::Throwable* GetPreAllocatedOutOfMemoryError() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 261 262 mirror::Throwable* GetPreAllocatedNoClassDefFoundError() 263 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 264 265 const std::vector<std::string>& GetProperties() const { 266 return properties_; 267 } 268 269 ThreadList* GetThreadList() const { 270 return thread_list_; 271 } 272 273 static const char* GetVersion() { 274 return "2.1.0"; 275 } 276 277 void DisallowNewSystemWeaks() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 278 void AllowNewSystemWeaks() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 279 void EnsureNewSystemWeaksDisallowed() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 280 281 // Visit all the roots. If only_dirty is true then non-dirty roots won't be visited. If 282 // clean_dirty is true then dirty roots will be marked as non-dirty after visiting. 283 void VisitRoots(RootCallback* visitor, void* arg, VisitRootFlags flags = kVisitRootFlagAllRoots) 284 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 285 286 // Visit all of the roots we can do safely do concurrently. 287 void VisitConcurrentRoots(RootCallback* visitor, void* arg, 288 VisitRootFlags flags = kVisitRootFlagAllRoots) 289 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 290 291 // Visit all of the non thread roots, we can do this with mutators unpaused. 292 void VisitNonThreadRoots(RootCallback* visitor, void* arg) 293 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 294 295 void VisitTransactionRoots(RootCallback* visitor, void* arg) 296 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 297 298 // Visit all of the thread roots. 299 void VisitThreadRoots(RootCallback* visitor, void* arg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 300 301 // Flip thread roots from from-space refs to to-space refs. 302 size_t FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 303 gc::collector::GarbageCollector* collector) 304 LOCKS_EXCLUDED(Locks::mutator_lock_); 305 306 // Visit all other roots which must be done with mutators suspended. 307 void VisitNonConcurrentRoots(RootCallback* visitor, void* arg) 308 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 309 310 // Sweep system weaks, the system weak is deleted if the visitor return nullptr. Otherwise, the 311 // system weak is updated to be the visitor's returned value. 312 void SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) 313 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 314 315 // Constant roots are the roots which never change after the runtime is initialized, they only 316 // need to be visited once per GC cycle. 317 void VisitConstantRoots(RootCallback* callback, void* arg) 318 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 319 320 // Returns a special method that calls into a trampoline for runtime method resolution 321 mirror::ArtMethod* GetResolutionMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 322 323 bool HasResolutionMethod() const { 324 return !resolution_method_.IsNull(); 325 } 326 327 void SetResolutionMethod(mirror::ArtMethod* method) { 328 resolution_method_ = GcRoot<mirror::ArtMethod>(method); 329 } 330 331 mirror::ArtMethod* CreateResolutionMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 332 333 // Returns a special method that calls into a trampoline for runtime imt conflicts. 334 mirror::ArtMethod* GetImtConflictMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 335 mirror::ArtMethod* GetImtUnimplementedMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 336 337 bool HasImtConflictMethod() const { 338 return !imt_conflict_method_.IsNull(); 339 } 340 341 void SetImtConflictMethod(mirror::ArtMethod* method) { 342 imt_conflict_method_ = GcRoot<mirror::ArtMethod>(method); 343 } 344 void SetImtUnimplementedMethod(mirror::ArtMethod* method) { 345 imt_unimplemented_method_ = GcRoot<mirror::ArtMethod>(method); 346 } 347 348 mirror::ArtMethod* CreateImtConflictMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 349 350 // Returns an imt with every entry set to conflict, used as default imt for all classes. 351 mirror::ObjectArray<mirror::ArtMethod>* GetDefaultImt() 352 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 353 354 bool HasDefaultImt() const { 355 return !default_imt_.IsNull(); 356 } 357 358 void SetDefaultImt(mirror::ObjectArray<mirror::ArtMethod>* imt) { 359 default_imt_ = GcRoot<mirror::ObjectArray<mirror::ArtMethod>>(imt); 360 } 361 362 mirror::ObjectArray<mirror::ArtMethod>* CreateDefaultImt(ClassLinker* cl) 363 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 364 365 // Returns a special method that describes all callee saves being spilled to the stack. 366 enum CalleeSaveType { 367 kSaveAll, 368 kRefsOnly, 369 kRefsAndArgs, 370 kLastCalleeSaveType // Value used for iteration 371 }; 372 373 bool HasCalleeSaveMethod(CalleeSaveType type) const { 374 return !callee_save_methods_[type].IsNull(); 375 } 376 377 mirror::ArtMethod* GetCalleeSaveMethod(CalleeSaveType type) 378 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 379 380 mirror::ArtMethod* GetCalleeSaveMethodUnchecked(CalleeSaveType type) 381 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 382 383 QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const { 384 return callee_save_method_frame_infos_[type]; 385 } 386 387 QuickMethodFrameInfo GetRuntimeMethodFrameInfo(mirror::ArtMethod* method) 388 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 389 390 static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) { 391 return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]); 392 } 393 394 InstructionSet GetInstructionSet() const { 395 return instruction_set_; 396 } 397 398 void SetInstructionSet(InstructionSet instruction_set); 399 400 void SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type); 401 402 mirror::ArtMethod* CreateCalleeSaveMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 403 404 int32_t GetStat(int kind); 405 406 RuntimeStats* GetStats() { 407 return &stats_; 408 } 409 410 bool HasStatsEnabled() const { 411 return stats_enabled_; 412 } 413 414 void ResetStats(int kinds); 415 416 void SetStatsEnabled(bool new_state) LOCKS_EXCLUDED(Locks::instrument_entrypoints_lock_, 417 Locks::mutator_lock_); 418 419 enum class NativeBridgeAction { // private 420 kUnload, 421 kInitialize 422 }; 423 void PreZygoteFork(); 424 bool InitZygote(); 425 void DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa); 426 427 const instrumentation::Instrumentation* GetInstrumentation() const { 428 return &instrumentation_; 429 } 430 431 instrumentation::Instrumentation* GetInstrumentation() { 432 return &instrumentation_; 433 } 434 435 bool UseCompileTimeClassPath() const { 436 return use_compile_time_class_path_; 437 } 438 439 void AddMethodVerifier(verifier::MethodVerifier* verifier) LOCKS_EXCLUDED(method_verifier_lock_); 440 void RemoveMethodVerifier(verifier::MethodVerifier* verifier) 441 LOCKS_EXCLUDED(method_verifier_lock_); 442 443 const std::vector<const DexFile*>& GetCompileTimeClassPath(jobject class_loader); 444 445 // The caller is responsible for ensuring the class_path DexFiles remain 446 // valid as long as the Runtime object remains valid. 447 void SetCompileTimeClassPath(jobject class_loader, std::vector<const DexFile*>& class_path); 448 449 void StartProfiler(const char* profile_output_filename); 450 void UpdateProfilerState(int state); 451 452 // Transaction support. 453 bool IsActiveTransaction() const { 454 return preinitialization_transaction_ != nullptr; 455 } 456 void EnterTransactionMode(Transaction* transaction); 457 void ExitTransactionMode(); 458 bool IsTransactionAborted() const; 459 460 void AbortTransactionAndThrowInternalError(Thread* self, const std::string& abort_message) 461 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 462 void ThrowInternalErrorForAbortedTransaction(Thread* self) 463 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 464 465 void RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, uint8_t value, 466 bool is_volatile) const; 467 void RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, int8_t value, 468 bool is_volatile) const; 469 void RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, uint16_t value, 470 bool is_volatile) const; 471 void RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, int16_t value, 472 bool is_volatile) const; 473 void RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, uint32_t value, 474 bool is_volatile) const; 475 void RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, uint64_t value, 476 bool is_volatile) const; 477 void RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 478 mirror::Object* value, bool is_volatile) const; 479 void RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const 480 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 481 void RecordStrongStringInsertion(mirror::String* s) const 482 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 483 void RecordWeakStringInsertion(mirror::String* s) const 484 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 485 void RecordStrongStringRemoval(mirror::String* s) const 486 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 487 void RecordWeakStringRemoval(mirror::String* s) const 488 EXCLUSIVE_LOCKS_REQUIRED(Locks::intern_table_lock_); 489 490 void SetFaultMessage(const std::string& message); 491 // Only read by the signal handler, NO_THREAD_SAFETY_ANALYSIS to prevent lock order violations 492 // with the unexpected_signal_lock_. 493 const std::string& GetFaultMessage() NO_THREAD_SAFETY_ANALYSIS { 494 return fault_message_; 495 } 496 497 void AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* arg_vector) const; 498 499 bool ExplicitStackOverflowChecks() const { 500 return !implicit_so_checks_; 501 } 502 503 bool IsVerificationEnabled() const { 504 return verify_; 505 } 506 507 bool RunningOnValgrind() const { 508 return running_on_valgrind_; 509 } 510 511 void SetTargetSdkVersion(int32_t version) { 512 target_sdk_version_ = version; 513 } 514 515 int32_t GetTargetSdkVersion() const { 516 return target_sdk_version_; 517 } 518 519 private: 520 static void InitPlatformSignalHandlers(); 521 522 Runtime(); 523 524 void BlockSignals(); 525 526 bool Init(const RuntimeOptions& options, bool ignore_unrecognized) 527 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_); 528 void InitNativeMethods() LOCKS_EXCLUDED(Locks::mutator_lock_); 529 void InitThreadGroups(Thread* self); 530 void RegisterRuntimeNativeMethods(JNIEnv* env); 531 532 void StartDaemonThreads(); 533 void StartSignalCatcher(); 534 535 // A pointer to the active runtime or NULL. 536 static Runtime* instance_; 537 538 // NOTE: these must match the gc::ProcessState values as they come directly from the framework. 539 static constexpr int kProfileForground = 0; 540 static constexpr int kProfileBackgrouud = 1; 541 542 GcRoot<mirror::ArtMethod> callee_save_methods_[kLastCalleeSaveType]; 543 GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_; 544 GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_; 545 GcRoot<mirror::ArtMethod> resolution_method_; 546 GcRoot<mirror::ArtMethod> imt_conflict_method_; 547 // Unresolved method has the same behavior as the conflict method, it is used by the class linker 548 // for differentiating between unfilled imt slots vs conflict slots in superclasses. 549 GcRoot<mirror::ArtMethod> imt_unimplemented_method_; 550 GcRoot<mirror::ObjectArray<mirror::ArtMethod>> default_imt_; 551 552 // Special sentinel object used to invalid conditions in JNI (cleared weak references) and 553 // JDWP (invalid references). 554 GcRoot<mirror::Object> sentinel_; 555 556 InstructionSet instruction_set_; 557 QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType]; 558 559 CompilerCallbacks* compiler_callbacks_; 560 bool is_zygote_; 561 bool must_relocate_; 562 bool is_concurrent_gc_enabled_; 563 bool is_explicit_gc_disabled_; 564 bool dex2oat_enabled_; 565 bool image_dex2oat_enabled_; 566 567 std::string compiler_executable_; 568 std::string patchoat_executable_; 569 std::vector<std::string> compiler_options_; 570 std::vector<std::string> image_compiler_options_; 571 std::string image_location_; 572 573 std::string boot_class_path_string_; 574 std::string class_path_string_; 575 std::vector<std::string> properties_; 576 577 // The default stack size for managed threads created by the runtime. 578 size_t default_stack_size_; 579 580 gc::Heap* heap_; 581 582 // The number of spins that are done before thread suspension is used to forcibly inflate. 583 size_t max_spins_before_thin_lock_inflation_; 584 MonitorList* monitor_list_; 585 MonitorPool* monitor_pool_; 586 587 ThreadList* thread_list_; 588 589 InternTable* intern_table_; 590 591 ClassLinker* class_linker_; 592 593 SignalCatcher* signal_catcher_; 594 std::string stack_trace_file_; 595 596 JavaVMExt* java_vm_; 597 598 // Fault message, printed when we get a SIGSEGV. 599 Mutex fault_message_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 600 std::string fault_message_ GUARDED_BY(fault_message_lock_); 601 602 // Method verifier set, used so that we can update their GC roots. 603 Mutex method_verifier_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 604 std::set<verifier::MethodVerifier*> method_verifiers_; 605 606 // A non-zero value indicates that a thread has been created but not yet initialized. Guarded by 607 // the shutdown lock so that threads aren't born while we're shutting down. 608 size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_); 609 610 // Waited upon until no threads are being born. 611 std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_); 612 613 // Set when runtime shutdown is past the point that new threads may attach. 614 bool shutting_down_ GUARDED_BY(Locks::runtime_shutdown_lock_); 615 616 // The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. 617 bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_); 618 619 bool started_; 620 621 // New flag added which tells us if the runtime has finished starting. If 622 // this flag is set then the Daemon threads are created and the class loader 623 // is created. This flag is needed for knowing if its safe to request CMS. 624 bool finished_starting_; 625 626 // Hooks supported by JNI_CreateJavaVM 627 jint (*vfprintf_)(FILE* stream, const char* format, va_list ap); 628 void (*exit_)(jint status); 629 void (*abort_)(); 630 631 bool stats_enabled_; 632 RuntimeStats stats_; 633 634 const bool running_on_valgrind_; 635 636 std::string profile_output_filename_; 637 ProfilerOptions profiler_options_; 638 bool profiler_started_; 639 640 bool method_trace_; 641 std::string method_trace_file_; 642 size_t method_trace_file_size_; 643 instrumentation::Instrumentation instrumentation_; 644 645 typedef AllocationTrackingSafeMap<jobject, std::vector<const DexFile*>, 646 kAllocatorTagCompileTimeClassPath, JobjectComparator> 647 CompileTimeClassPaths; 648 CompileTimeClassPaths compile_time_class_paths_; 649 bool use_compile_time_class_path_; 650 651 jobject main_thread_group_; 652 jobject system_thread_group_; 653 654 // As returned by ClassLoader.getSystemClassLoader(). 655 jobject system_class_loader_; 656 657 // If true, then we dump the GC cumulative timings on shutdown. 658 bool dump_gc_performance_on_shutdown_; 659 660 // Transaction used for pre-initializing classes at compilation time. 661 Transaction* preinitialization_transaction_; 662 663 // If false, verification is disabled. True by default. 664 bool verify_; 665 666 // Specifies target SDK version to allow workarounds for certain API levels. 667 int32_t target_sdk_version_; 668 669 // Implicit checks flags. 670 bool implicit_null_checks_; // NullPointer checks are implicit. 671 bool implicit_so_checks_; // StackOverflow checks are implicit. 672 bool implicit_suspend_checks_; // Thread suspension checks are implicit. 673 674 // Whether or not a native bridge has been loaded. 675 // 676 // The native bridge allows running native code compiled for a foreign ISA. The way it works is, 677 // if standard dlopen fails to load native library associated with native activity, it calls to 678 // the native bridge to load it and then gets the trampoline for the entry to native activity. 679 // 680 // The option 'native_bridge_library_filename' specifies the name of the native bridge. 681 // When non-empty the native bridge will be loaded from the given file. An empty value means 682 // that there's no native bridge. 683 bool is_native_bridge_loaded_; 684 685 DISALLOW_COPY_AND_ASSIGN(Runtime); 686}; 687std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs); 688 689} // namespace art 690 691#endif // ART_RUNTIME_RUNTIME_H_ 692