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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 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_DEFERRED_SEQUENCED_TASK_RUNNER_H_ | 5 #ifndef BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_ |
6 #define BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_ | 6 #define BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/base_export.h" | 10 #include "base/base_export.h" |
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23 // queues up all requests until the first call to Start() is issued. | 23 // queues up all requests until the first call to Start() is issued. |
24 class BASE_EXPORT DeferredSequencedTaskRunner : public SequencedTaskRunner { | 24 class BASE_EXPORT DeferredSequencedTaskRunner : public SequencedTaskRunner { |
25 public: | 25 public: |
26 explicit DeferredSequencedTaskRunner( | 26 explicit DeferredSequencedTaskRunner( |
27 scoped_refptr<SequencedTaskRunner> target_runner); | 27 scoped_refptr<SequencedTaskRunner> target_runner); |
28 | 28 |
29 // TaskRunner implementation | 29 // TaskRunner implementation |
30 bool PostDelayedTask(const tracked_objects::Location& from_here, | 30 bool PostDelayedTask(const tracked_objects::Location& from_here, |
31 OnceClosure task, | 31 OnceClosure task, |
32 TimeDelta delay) override; | 32 TimeDelta delay) override; |
33 bool RunsTasksOnCurrentThread() const override; | 33 bool RunsTasksInCurrentSequence() const override; |
34 | 34 |
35 // SequencedTaskRunner implementation | 35 // SequencedTaskRunner implementation |
36 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, | 36 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, |
37 OnceClosure task, | 37 OnceClosure task, |
38 TimeDelta delay) override; | 38 TimeDelta delay) override; |
39 | 39 |
40 // Start the execution - posts all queued tasks to the target executor. The | 40 // Start the execution - posts all queued tasks to the target executor. The |
41 // deferred tasks are posted with their initial delay, meaning that the task | 41 // deferred tasks are posted with their initial delay, meaning that the task |
42 // execution delay is actually measured from Start. | 42 // execution delay is actually measured from Start. |
43 // Fails when called a second time. | 43 // Fails when called a second time. |
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71 bool started_; | 71 bool started_; |
72 const scoped_refptr<SequencedTaskRunner> target_task_runner_; | 72 const scoped_refptr<SequencedTaskRunner> target_task_runner_; |
73 std::vector<DeferredTask> deferred_tasks_queue_; | 73 std::vector<DeferredTask> deferred_tasks_queue_; |
74 | 74 |
75 DISALLOW_COPY_AND_ASSIGN(DeferredSequencedTaskRunner); | 75 DISALLOW_COPY_AND_ASSIGN(DeferredSequencedTaskRunner); |
76 }; | 76 }; |
77 | 77 |
78 } // namespace base | 78 } // namespace base |
79 | 79 |
80 #endif // BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_ | 80 #endif // BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_ |
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