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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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_TASK_SCHEDULER_SCHEDULER_WORKER_THREAD_H_ | 5 #ifndef BASE_TASK_SCHEDULER_SCHEDULER_WORKER_THREAD_H_ |
| 6 #define BASE_TASK_SCHEDULER_SCHEDULER_WORKER_THREAD_H_ | 6 #define BASE_TASK_SCHEDULER_SCHEDULER_WORKER_THREAD_H_ |
| 7 | 7 |
| 8 #include <memory> |
| 9 |
| 8 #include "base/base_export.h" | 10 #include "base/base_export.h" |
| 9 #include "base/callback.h" | 11 #include "base/callback.h" |
| 10 #include "base/macros.h" | 12 #include "base/macros.h" |
| 11 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "base/synchronization/waitable_event.h" | 14 #include "base/synchronization/waitable_event.h" |
| 14 #include "base/task_scheduler/scheduler_lock.h" | 15 #include "base/task_scheduler/scheduler_lock.h" |
| 15 #include "base/task_scheduler/sequence.h" | 16 #include "base/task_scheduler/sequence.h" |
| 16 #include "base/threading/platform_thread.h" | 17 #include "base/threading/platform_thread.h" |
| 17 | 18 |
| 18 namespace base { | 19 namespace base { |
| 19 namespace internal { | 20 namespace internal { |
| 20 | 21 |
| 21 class TaskTracker; | 22 class TaskTracker; |
| 22 | 23 |
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| 42 Callback<void(const SchedulerWorkerThread* worker_thread, | 43 Callback<void(const SchedulerWorkerThread* worker_thread, |
| 43 scoped_refptr<Sequence> sequence)>; | 44 scoped_refptr<Sequence> sequence)>; |
| 44 | 45 |
| 45 // Creates a SchedulerWorkerThread with priority |thread_priority| that runs | 46 // Creates a SchedulerWorkerThread with priority |thread_priority| that runs |
| 46 // Tasks from Sequences returned by |get_work_callback|. |main_entry_callback| | 47 // Tasks from Sequences returned by |get_work_callback|. |main_entry_callback| |
| 47 // is invoked when the main function of the SchedulerWorkerThread is entered. | 48 // is invoked when the main function of the SchedulerWorkerThread is entered. |
| 48 // |ran_task_from_sequence_callback| is invoked after the | 49 // |ran_task_from_sequence_callback| is invoked after the |
| 49 // SchedulerWorkerThread has tried to run a Task from a Sequence returned by | 50 // SchedulerWorkerThread has tried to run a Task from a Sequence returned by |
| 50 // |get_work_callback|. |task_tracker| is used to handle shutdown behavior of | 51 // |get_work_callback|. |task_tracker| is used to handle shutdown behavior of |
| 51 // Tasks. Returns nullptr if creating the underlying platform thread fails. | 52 // Tasks. Returns nullptr if creating the underlying platform thread fails. |
| 52 static scoped_ptr<SchedulerWorkerThread> CreateSchedulerWorkerThread( | 53 static std::unique_ptr<SchedulerWorkerThread> CreateSchedulerWorkerThread( |
| 53 ThreadPriority thread_priority, | 54 ThreadPriority thread_priority, |
| 54 const Closure& main_entry_callback, | 55 const Closure& main_entry_callback, |
| 55 const GetWorkCallback& get_work_callback, | 56 const GetWorkCallback& get_work_callback, |
| 56 const RanTaskFromSequenceCallback& ran_task_from_sequence_callback, | 57 const RanTaskFromSequenceCallback& ran_task_from_sequence_callback, |
| 57 TaskTracker* task_tracker); | 58 TaskTracker* task_tracker); |
| 58 | 59 |
| 59 // Destroying a SchedulerWorkerThread in production is not allowed; it is | 60 // Destroying a SchedulerWorkerThread in production is not allowed; it is |
| 60 // always leaked. In tests, it can only be destroyed after JoinForTesting() | 61 // always leaked. In tests, it can only be destroyed after JoinForTesting() |
| 61 // has returned. | 62 // has returned. |
| 62 ~SchedulerWorkerThread() override; | 63 ~SchedulerWorkerThread() override; |
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| 100 // True once JoinForTesting() has been called. | 101 // True once JoinForTesting() has been called. |
| 101 bool should_exit_for_testing_ = false; | 102 bool should_exit_for_testing_ = false; |
| 102 | 103 |
| 103 DISALLOW_COPY_AND_ASSIGN(SchedulerWorkerThread); | 104 DISALLOW_COPY_AND_ASSIGN(SchedulerWorkerThread); |
| 104 }; | 105 }; |
| 105 | 106 |
| 106 } // namespace internal | 107 } // namespace internal |
| 107 } // namespace base | 108 } // namespace base |
| 108 | 109 |
| 109 #endif // BASE_TASK_SCHEDULER_SCHEDULER_WORKER_THREAD_H_ | 110 #endif // BASE_TASK_SCHEDULER_SCHEDULER_WORKER_THREAD_H_ |
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