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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_TASK_SCHEDULER_H_ | 5 #ifndef BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ |
6 #define BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ | 6 #define BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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160 #endif // !defined(OS_NACL) | 160 #endif // !defined(OS_NACL) |
161 | 161 |
162 // Creates a ready to start task scheduler. |name| is used to label threads | 162 // Creates a ready to start task scheduler. |name| is used to label threads |
163 // and histograms. It should identify the component that creates the | 163 // and histograms. It should identify the component that creates the |
164 // TaskScheduler. The task scheduler doesn't create threads until Start() is | 164 // TaskScheduler. The task scheduler doesn't create threads until Start() is |
165 // called. Tasks can be posted at any time but will not run until after | 165 // called. Tasks can be posted at any time but will not run until after |
166 // Start() is called. For tests, prefer base::test::ScopedTaskEnvironment | 166 // Start() is called. For tests, prefer base::test::ScopedTaskEnvironment |
167 // (ensures isolation). | 167 // (ensures isolation). |
168 static void Create(StringPiece name); | 168 static void Create(StringPiece name); |
169 | 169 |
170 // Deprecated. Use Create() and Start() instead. | |
171 // TODO(fdoray): Redirect callers to Create() and Start(). | |
172 static void CreateAndSetDefaultTaskScheduler(StringPiece name, | |
173 const InitParams& init_params); | |
174 | |
175 // Registers |task_scheduler| to handle tasks posted through the post_task.h | 170 // Registers |task_scheduler| to handle tasks posted through the post_task.h |
176 // API for this process. For tests, prefer base::test::ScopedTaskScheduler | 171 // API for this process. For tests, prefer base::test::ScopedTaskScheduler |
177 // (ensures isolation). | 172 // (ensures isolation). |
178 static void SetInstance(std::unique_ptr<TaskScheduler> task_scheduler); | 173 static void SetInstance(std::unique_ptr<TaskScheduler> task_scheduler); |
179 | 174 |
180 // Retrieve the TaskScheduler set via SetInstance() or | 175 // Retrieve the TaskScheduler set via SetInstance() or |
181 // CreateAndSet(Simple|Default)TaskScheduler(). This should be used very | 176 // CreateAndSet(Simple|Default)TaskScheduler(). This should be used very |
182 // rarely; most users of TaskScheduler should use the post_task.h API. In | 177 // rarely; most users of TaskScheduler should use the post_task.h API. In |
183 // particular, refrain from doing | 178 // particular, refrain from doing |
184 // if (!TaskScheduler::GetInstance()) { | 179 // if (!TaskScheduler::GetInstance()) { |
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201 // each process n/GetMaxConcurrentTasksWithTraitsDeprecated() items. | 196 // each process n/GetMaxConcurrentTasksWithTraitsDeprecated() items. |
202 // | 197 // |
203 // TODO(fdoray): Remove this method. https://crbug.com/687264 | 198 // TODO(fdoray): Remove this method. https://crbug.com/687264 |
204 virtual int GetMaxConcurrentTasksWithTraitsDeprecated( | 199 virtual int GetMaxConcurrentTasksWithTraitsDeprecated( |
205 const TaskTraits& traits) const = 0; | 200 const TaskTraits& traits) const = 0; |
206 }; | 201 }; |
207 | 202 |
208 } // namespace base | 203 } // namespace base |
209 | 204 |
210 #endif // BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ | 205 #endif // BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ |
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