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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium 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 BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ | 5 #ifndef BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ |
| 6 #define BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ | 6 #define BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ |
| 7 | 7 |
| 8 #include <memory> | 8 #include <memory> |
| 9 #include <queue> | 9 #include <queue> |
| 10 #include <string> | 10 #include <string> |
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| 368 | 368 |
| 369 protected: | 369 protected: |
| 370 virtual ~TaskObserver(); | 370 virtual ~TaskObserver(); |
| 371 }; | 371 }; |
| 372 | 372 |
| 373 // These functions can only be called on the same thread that |this| is | 373 // These functions can only be called on the same thread that |this| is |
| 374 // running on. | 374 // running on. |
| 375 void AddTaskObserver(TaskObserver* task_observer); | 375 void AddTaskObserver(TaskObserver* task_observer); |
| 376 void RemoveTaskObserver(TaskObserver* task_observer); | 376 void RemoveTaskObserver(TaskObserver* task_observer); |
| 377 | 377 |
| 378 #if defined(OS_WIN) | |
| 379 void set_os_modal_loop(bool os_modal_loop) { | |
| 380 os_modal_loop_ = os_modal_loop; | |
| 381 } | |
| 382 | |
| 383 bool os_modal_loop() const { | |
| 384 return os_modal_loop_; | |
| 385 } | |
| 386 #endif // OS_WIN | |
| 387 | |
| 388 // Can only be called from the thread that owns the MessageLoop. | 378 // Can only be called from the thread that owns the MessageLoop. |
| 389 bool is_running() const; | 379 bool is_running() const; |
| 390 | 380 |
| 391 // Returns true if the message loop has high resolution timers enabled. | 381 // Returns true if the message loop has high resolution timers enabled. |
| 392 // Provided for testing. | 382 // Provided for testing. |
| 393 bool HasHighResolutionTasks(); | 383 bool HasHighResolutionTasks(); |
| 394 | 384 |
| 395 // Returns true if the message loop is "idle". Provided for testing. | 385 // Returns true if the message loop is "idle". Provided for testing. |
| 396 bool IsIdleForTesting(); | 386 bool IsIdleForTesting(); |
| 397 | 387 |
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| 516 TaskQueue deferred_non_nestable_work_queue_; | 506 TaskQueue deferred_non_nestable_work_queue_; |
| 517 | 507 |
| 518 ObserverList<DestructionObserver> destruction_observers_; | 508 ObserverList<DestructionObserver> destruction_observers_; |
| 519 | 509 |
| 520 ObserverList<NestingObserver> nesting_observers_; | 510 ObserverList<NestingObserver> nesting_observers_; |
| 521 | 511 |
| 522 // A recursion block that prevents accidentally running additional tasks when | 512 // A recursion block that prevents accidentally running additional tasks when |
| 523 // insider a (accidentally induced?) nested message pump. | 513 // insider a (accidentally induced?) nested message pump. |
| 524 bool nestable_tasks_allowed_; | 514 bool nestable_tasks_allowed_; |
| 525 | 515 |
| 526 #if defined(OS_WIN) | |
| 527 // Should be set to true before calling Windows APIs like TrackPopupMenu, etc. | |
| 528 // which enter a modal message loop. | |
| 529 bool os_modal_loop_; | |
| 530 #endif | |
| 531 | |
| 532 // pump_factory_.Run() is called to create a message pump for this loop | 516 // pump_factory_.Run() is called to create a message pump for this loop |
| 533 // if type_ is TYPE_CUSTOM and pump_ is null. | 517 // if type_ is TYPE_CUSTOM and pump_ is null. |
| 534 MessagePumpFactoryCallback pump_factory_; | 518 MessagePumpFactoryCallback pump_factory_; |
| 535 | 519 |
| 536 std::string thread_name_; | 520 std::string thread_name_; |
| 537 // A profiling histogram showing the counts of various messages and events. | 521 // A profiling histogram showing the counts of various messages and events. |
| 538 HistogramBase* message_histogram_; | 522 HistogramBase* message_histogram_; |
| 539 | 523 |
| 540 RunLoop* run_loop_; | 524 RunLoop* run_loop_; |
| 541 | 525 |
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| 697 | 681 |
| 698 // Do not add any member variables to MessageLoopForIO! This is important b/c | 682 // Do not add any member variables to MessageLoopForIO! This is important b/c |
| 699 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO). Any extra | 683 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO). Any extra |
| 700 // data that you need should be stored on the MessageLoop's pump_ instance. | 684 // data that you need should be stored on the MessageLoop's pump_ instance. |
| 701 static_assert(sizeof(MessageLoop) == sizeof(MessageLoopForIO), | 685 static_assert(sizeof(MessageLoop) == sizeof(MessageLoopForIO), |
| 702 "MessageLoopForIO should not have extra member variables"); | 686 "MessageLoopForIO should not have extra member variables"); |
| 703 | 687 |
| 704 } // namespace base | 688 } // namespace base |
| 705 | 689 |
| 706 #endif // BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ | 690 #endif // BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ |
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