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1 // Copyright 2017 The Chromium Authors. All rights reserved. | 1 // Copyright 2017 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 #include "base/task_scheduler/scheduler_single_thread_task_runner_manager.h" | 5 #include "base/task_scheduler/scheduler_single_thread_task_runner_manager.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <memory> | 8 #include <memory> |
9 #include <string> | 9 #include <string> |
10 #include <utility> | 10 #include <utility> |
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88 DCHECK_EQ(sequence, sequence_); | 88 DCHECK_EQ(sequence, sequence_); |
89 has_work_ = true; | 89 has_work_ = true; |
90 } | 90 } |
91 | 91 |
92 TimeDelta GetSleepTimeout() override { return TimeDelta::Max(); } | 92 TimeDelta GetSleepTimeout() override { return TimeDelta::Max(); } |
93 | 93 |
94 bool CanDetach(SchedulerWorker* worker) override { return false; } | 94 bool CanDetach(SchedulerWorker* worker) override { return false; } |
95 | 95 |
96 void OnDetach() override { NOTREACHED(); } | 96 void OnDetach() override { NOTREACHED(); } |
97 | 97 |
98 bool RunsTasksOnCurrentThread() { | 98 bool RunsTasksInCurrentSequence() { |
99 // We check the thread ref instead of the sequence for the benefit of COM | 99 // We check the thread ref instead of the sequence for the benefit of COM |
100 // callbacks which may execute without a sequence context. | 100 // callbacks which may execute without a sequence context. |
101 return thread_ref_checker_.IsCurrentThreadSameAsSetThread(); | 101 return thread_ref_checker_.IsCurrentThreadSameAsSetThread(); |
102 } | 102 } |
103 | 103 |
104 void OnMainExit() override { | 104 void OnMainExit() override { |
105 // Move |sequence_| to |local_sequence| so that if we have the last | 105 // Move |sequence_| to |local_sequence| so that if we have the last |
106 // reference to the sequence we don't destroy it (and its tasks) within | 106 // reference to the sequence we don't destroy it (and its tasks) within |
107 // |sequence_lock_|. | 107 // |sequence_lock_|. |
108 scoped_refptr<Sequence> local_sequence; | 108 scoped_refptr<Sequence> local_sequence; |
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271 return true; | 271 return true; |
272 } | 272 } |
273 | 273 |
274 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, | 274 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, |
275 OnceClosure closure, | 275 OnceClosure closure, |
276 TimeDelta delay) override { | 276 TimeDelta delay) override { |
277 // Tasks are never nested within the task scheduler. | 277 // Tasks are never nested within the task scheduler. |
278 return PostDelayedTask(from_here, std::move(closure), delay); | 278 return PostDelayedTask(from_here, std::move(closure), delay); |
279 } | 279 } |
280 | 280 |
281 bool RunsTasksOnCurrentThread() const override { | 281 bool RunsTasksInCurrentSequence() const override { |
282 return GetDelegate()->RunsTasksOnCurrentThread(); | 282 return GetDelegate()->RunsTasksInCurrentSequence(); |
283 } | 283 } |
284 | 284 |
285 private: | 285 private: |
286 ~SchedulerSingleThreadTaskRunner() override { | 286 ~SchedulerSingleThreadTaskRunner() override { |
287 outer_->UnregisterSchedulerWorker(worker_); | 287 outer_->UnregisterSchedulerWorker(worker_); |
288 } | 288 } |
289 | 289 |
290 void PostTaskNow(std::unique_ptr<Task> task) { | 290 void PostTaskNow(std::unique_ptr<Task> task) { |
291 scoped_refptr<Sequence> sequence = GetDelegate()->sequence(); | 291 scoped_refptr<Sequence> sequence = GetDelegate()->sequence(); |
292 // If |sequence| is null, then the thread is effectively gone (either | 292 // If |sequence| is null, then the thread is effectively gone (either |
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462 }); | 462 }); |
463 DCHECK(worker_iter != workers_.end()); | 463 DCHECK(worker_iter != workers_.end()); |
464 worker_to_destroy = std::move(*worker_iter); | 464 worker_to_destroy = std::move(*worker_iter); |
465 workers_.erase(worker_iter); | 465 workers_.erase(worker_iter); |
466 } | 466 } |
467 worker_to_destroy->Cleanup(); | 467 worker_to_destroy->Cleanup(); |
468 } | 468 } |
469 | 469 |
470 } // namespace internal | 470 } // namespace internal |
471 } // namespace base | 471 } // namespace base |
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