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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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/cancelable_task_tracker.h" | 5 #include "base/task/cancelable_task_tracker.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 | 8 |
9 #include <utility> | 9 #include <utility> |
10 | 10 |
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83 | 83 |
84 // Owned by reply callback below. | 84 // Owned by reply callback below. |
85 CancellationFlag* flag = new CancellationFlag(); | 85 CancellationFlag* flag = new CancellationFlag(); |
86 | 86 |
87 TaskId id = next_id_; | 87 TaskId id = next_id_; |
88 next_id_++; // int64_t is big enough that we ignore the potential overflow. | 88 next_id_++; // int64_t is big enough that we ignore the potential overflow. |
89 | 89 |
90 Closure untrack_closure = | 90 Closure untrack_closure = |
91 Bind(&CancelableTaskTracker::Untrack, weak_factory_.GetWeakPtr(), id); | 91 Bind(&CancelableTaskTracker::Untrack, weak_factory_.GetWeakPtr(), id); |
92 bool success = task_runner->PostTaskAndReply( | 92 bool success = task_runner->PostTaskAndReply( |
93 from_here, Bind(&RunIfNotCanceled, flag, std::move(task)), | 93 from_here, BindOnce(&RunIfNotCanceled, flag, std::move(task)), |
94 Bind(&RunIfNotCanceledThenUntrack, base::Owned(flag), std::move(reply), | 94 BindOnce(&RunIfNotCanceledThenUntrack, base::Owned(flag), |
95 std::move(untrack_closure))); | 95 std::move(reply), std::move(untrack_closure))); |
96 | 96 |
97 if (!success) | 97 if (!success) |
98 return kBadTaskId; | 98 return kBadTaskId; |
99 | 99 |
100 Track(id, flag); | 100 Track(id, flag); |
101 return id; | 101 return id; |
102 } | 102 } |
103 | 103 |
104 CancelableTaskTracker::TaskId CancelableTaskTracker::NewTrackedTaskId( | 104 CancelableTaskTracker::TaskId CancelableTaskTracker::NewTrackedTaskId( |
105 IsCanceledCallback* is_canceled_cb) { | 105 IsCanceledCallback* is_canceled_cb) { |
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170 DCHECK(success); | 170 DCHECK(success); |
171 } | 171 } |
172 | 172 |
173 void CancelableTaskTracker::Untrack(TaskId id) { | 173 void CancelableTaskTracker::Untrack(TaskId id) { |
174 DCHECK(sequence_checker_.CalledOnValidSequence()); | 174 DCHECK(sequence_checker_.CalledOnValidSequence()); |
175 size_t num = task_flags_.erase(id); | 175 size_t num = task_flags_.erase(id); |
176 DCHECK_EQ(1u, num); | 176 DCHECK_EQ(1u, num); |
177 } | 177 } |
178 | 178 |
179 } // namespace base | 179 } // namespace base |
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