OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_ISOLATE_H_ | 5 #ifndef V8_ISOLATE_H_ |
6 #define V8_ISOLATE_H_ | 6 #define V8_ISOLATE_H_ |
7 | 7 |
8 #include "include/v8-debug.h" | 8 #include "include/v8-debug.h" |
9 #include "src/allocation.h" | 9 #include "src/allocation.h" |
10 #include "src/assert-scope.h" | 10 #include "src/assert-scope.h" |
(...skipping 429 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
440 enum AddressId { | 440 enum AddressId { |
441 #define DECLARE_ENUM(CamelName, hacker_name) k##CamelName##Address, | 441 #define DECLARE_ENUM(CamelName, hacker_name) k##CamelName##Address, |
442 FOR_EACH_ISOLATE_ADDRESS_NAME(DECLARE_ENUM) | 442 FOR_EACH_ISOLATE_ADDRESS_NAME(DECLARE_ENUM) |
443 #undef DECLARE_ENUM | 443 #undef DECLARE_ENUM |
444 kIsolateAddressCount | 444 kIsolateAddressCount |
445 }; | 445 }; |
446 | 446 |
447 // Returns the PerIsolateThreadData for the current thread (or NULL if one is | 447 // Returns the PerIsolateThreadData for the current thread (or NULL if one is |
448 // not currently set). | 448 // not currently set). |
449 static PerIsolateThreadData* CurrentPerIsolateThreadData() { | 449 static PerIsolateThreadData* CurrentPerIsolateThreadData() { |
450 EnsureInitialized(); | |
451 return reinterpret_cast<PerIsolateThreadData*>( | 450 return reinterpret_cast<PerIsolateThreadData*>( |
452 base::Thread::GetThreadLocal(per_isolate_thread_data_key_)); | 451 base::Thread::GetThreadLocal(per_isolate_thread_data_key_)); |
453 } | 452 } |
454 | 453 |
455 // Returns the isolate inside which the current thread is running. | 454 // Returns the isolate inside which the current thread is running. |
456 INLINE(static Isolate* Current()) { | 455 INLINE(static Isolate* Current()) { |
457 EnsureInitialized(); | |
458 Isolate* isolate = reinterpret_cast<Isolate*>( | 456 Isolate* isolate = reinterpret_cast<Isolate*>( |
459 base::Thread::GetExistingThreadLocal(isolate_key_)); | 457 base::Thread::GetExistingThreadLocal(isolate_key_)); |
460 ASSERT(isolate != NULL); | 458 ASSERT(isolate != NULL); |
461 return isolate; | 459 return isolate; |
462 } | 460 } |
463 | 461 |
464 INLINE(static Isolate* UncheckedCurrent()) { | 462 INLINE(static Isolate* UncheckedCurrent()) { |
465 EnsureInitialized(); | |
466 return reinterpret_cast<Isolate*>( | 463 return reinterpret_cast<Isolate*>( |
467 base::Thread::GetThreadLocal(isolate_key_)); | 464 base::Thread::GetThreadLocal(isolate_key_)); |
468 } | 465 } |
469 | |
470 // Like UncheckCurrent, but returns NULL if called reentrantly during | |
471 // initialization. | |
472 INLINE(static Isolate* UncheckedReentrantCurrent()) { | |
473 if (!process_wide_mutex_.Pointer()->TryLock()) return NULL; | |
474 process_wide_mutex_.Pointer()->Unlock(); | |
475 EnsureInitialized(); | |
476 return reinterpret_cast<Isolate*>( | |
477 base::Thread::GetThreadLocal(isolate_key_)); | |
478 } | |
479 | 466 |
480 // Usually called by Init(), but can be called early e.g. to allow | 467 // Usually called by Init(), but can be called early e.g. to allow |
481 // testing components that require logging but not the whole | 468 // testing components that require logging but not the whole |
482 // isolate. | 469 // isolate. |
483 // | 470 // |
484 // Safe to call more than once. | 471 // Safe to call more than once. |
485 void InitializeLoggingAndCounters(); | 472 void InitializeLoggingAndCounters(); |
486 | 473 |
487 bool Init(Deserializer* des); | 474 bool Init(Deserializer* des); |
488 | 475 |
489 bool IsInitialized() { return state_ == INITIALIZED; } | 476 bool IsInitialized() { return state_ == INITIALIZED; } |
490 | 477 |
491 // True if at least one thread Enter'ed this isolate. | 478 // True if at least one thread Enter'ed this isolate. |
492 bool IsInUse() { return entry_stack_ != NULL; } | 479 bool IsInUse() { return entry_stack_ != NULL; } |
493 | 480 |
494 // Destroys the non-default isolates. | 481 // Destroys the non-default isolates. |
495 // Sets default isolate into "has_been_disposed" state rather then destroying, | 482 // Sets default isolate into "has_been_disposed" state rather then destroying, |
496 // for legacy API reasons. | 483 // for legacy API reasons. |
497 void TearDown(); | 484 void TearDown(); |
498 | 485 |
499 static void GlobalTearDown(); | 486 static void GlobalTearDown(); |
500 | 487 |
| 488 static void SetCrashIfDefaultIsolateInitialized(); |
| 489 // Ensures that process-wide resources and the default isolate have been |
| 490 // allocated. It is only necessary to call this method in rare cases, for |
| 491 // example if you are using V8 from within the body of a static initializer. |
| 492 // Safe to call multiple times. |
| 493 static void EnsureDefaultIsolate(); |
| 494 |
501 // Find the PerThread for this particular (isolate, thread) combination | 495 // Find the PerThread for this particular (isolate, thread) combination |
502 // If one does not yet exist, return null. | 496 // If one does not yet exist, return null. |
503 PerIsolateThreadData* FindPerThreadDataForThisThread(); | 497 PerIsolateThreadData* FindPerThreadDataForThisThread(); |
504 | 498 |
505 // Find the PerThread for given (isolate, thread) combination | 499 // Find the PerThread for given (isolate, thread) combination |
506 // If one does not yet exist, return null. | 500 // If one does not yet exist, return null. |
507 PerIsolateThreadData* FindPerThreadDataForThread(ThreadId thread_id); | 501 PerIsolateThreadData* FindPerThreadDataForThread(ThreadId thread_id); |
508 | 502 |
509 // Returns the key used to store the pointer to the current isolate. | 503 // Returns the key used to store the pointer to the current isolate. |
510 // Used internally for V8 threads that do not execute JavaScript but still | 504 // Used internally for V8 threads that do not execute JavaScript but still |
511 // are part of the domain of an isolate (like the context switcher). | 505 // are part of the domain of an isolate (like the context switcher). |
512 static base::Thread::LocalStorageKey isolate_key() { | 506 static base::Thread::LocalStorageKey isolate_key() { |
513 EnsureInitialized(); | |
514 return isolate_key_; | 507 return isolate_key_; |
515 } | 508 } |
516 | 509 |
517 // Returns the key used to store process-wide thread IDs. | 510 // Returns the key used to store process-wide thread IDs. |
518 static base::Thread::LocalStorageKey thread_id_key() { | 511 static base::Thread::LocalStorageKey thread_id_key() { |
519 EnsureInitialized(); | |
520 return thread_id_key_; | 512 return thread_id_key_; |
521 } | 513 } |
522 | 514 |
523 static base::Thread::LocalStorageKey per_isolate_thread_data_key(); | 515 static base::Thread::LocalStorageKey per_isolate_thread_data_key(); |
524 | 516 |
525 // Mutex for serializing access to break control structures. | 517 // Mutex for serializing access to break control structures. |
526 base::RecursiveMutex* break_access() { return &break_access_; } | 518 base::RecursiveMutex* break_access() { return &break_access_; } |
527 | 519 |
528 Address get_address_from_id(AddressId id); | 520 Address get_address_from_id(AddressId id); |
529 | 521 |
(...skipping 560 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1090 void RemoveCallCompletedCallback(CallCompletedCallback callback); | 1082 void RemoveCallCompletedCallback(CallCompletedCallback callback); |
1091 void FireCallCompletedCallback(); | 1083 void FireCallCompletedCallback(); |
1092 | 1084 |
1093 void EnqueueMicrotask(Handle<Object> microtask); | 1085 void EnqueueMicrotask(Handle<Object> microtask); |
1094 void RunMicrotasks(); | 1086 void RunMicrotasks(); |
1095 | 1087 |
1096 void SetUseCounterCallback(v8::Isolate::UseCounterCallback callback); | 1088 void SetUseCounterCallback(v8::Isolate::UseCounterCallback callback); |
1097 void CountUsage(v8::Isolate::UseCounterFeature feature); | 1089 void CountUsage(v8::Isolate::UseCounterFeature feature); |
1098 | 1090 |
1099 private: | 1091 private: |
1100 static void EnsureInitialized(); | |
1101 | |
1102 Isolate(); | 1092 Isolate(); |
1103 | 1093 |
1104 friend struct GlobalState; | 1094 friend struct GlobalState; |
1105 friend struct InitializeGlobalState; | 1095 friend struct InitializeGlobalState; |
1106 | 1096 |
1107 enum State { | 1097 enum State { |
1108 UNINITIALIZED, // Some components may not have been allocated. | 1098 UNINITIALIZED, // Some components may not have been allocated. |
1109 INITIALIZED // All components are fully initialized. | 1099 INITIALIZED // All components are fully initialized. |
1110 }; | 1100 }; |
1111 | 1101 |
(...skipping 39 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1151 int entry_count; | 1141 int entry_count; |
1152 PerIsolateThreadData* previous_thread_data; | 1142 PerIsolateThreadData* previous_thread_data; |
1153 Isolate* previous_isolate; | 1143 Isolate* previous_isolate; |
1154 EntryStackItem* previous_item; | 1144 EntryStackItem* previous_item; |
1155 | 1145 |
1156 private: | 1146 private: |
1157 DISALLOW_COPY_AND_ASSIGN(EntryStackItem); | 1147 DISALLOW_COPY_AND_ASSIGN(EntryStackItem); |
1158 }; | 1148 }; |
1159 | 1149 |
1160 // This mutex protects highest_thread_id_ and thread_data_table_. | 1150 // This mutex protects highest_thread_id_ and thread_data_table_. |
1161 static base::LazyMutex process_wide_mutex_; | 1151 static base::Mutex process_wide_mutex_; |
1162 | 1152 |
1163 static base::Thread::LocalStorageKey per_isolate_thread_data_key_; | 1153 static base::Thread::LocalStorageKey per_isolate_thread_data_key_; |
1164 static base::Thread::LocalStorageKey isolate_key_; | 1154 static base::Thread::LocalStorageKey isolate_key_; |
1165 static base::Thread::LocalStorageKey thread_id_key_; | 1155 static base::Thread::LocalStorageKey thread_id_key_; |
1166 static ThreadDataTable* thread_data_table_; | 1156 static ThreadDataTable* thread_data_table_; |
1167 | 1157 |
1168 // A global counter for all generated Isolates, might overflow. | 1158 // A global counter for all generated Isolates, might overflow. |
1169 static base::Atomic32 isolate_counter_; | 1159 static base::Atomic32 isolate_counter_; |
1170 | 1160 |
1171 void Deinit(); | 1161 void Deinit(); |
(...skipping 352 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1524 } | 1514 } |
1525 | 1515 |
1526 EmbeddedVector<char, 128> filename_; | 1516 EmbeddedVector<char, 128> filename_; |
1527 FILE* file_; | 1517 FILE* file_; |
1528 int scope_depth_; | 1518 int scope_depth_; |
1529 }; | 1519 }; |
1530 | 1520 |
1531 } } // namespace v8::internal | 1521 } } // namespace v8::internal |
1532 | 1522 |
1533 #endif // V8_ISOLATE_H_ | 1523 #endif // V8_ISOLATE_H_ |
OLD | NEW |