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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 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_ | 5 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_ |
| 6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_ | 6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_ |
| 7 | 7 |
| 8 #include <stddef.h> |
| 9 #include <stdint.h> |
| 10 |
| 8 #include <queue> | 11 #include <queue> |
| 9 #include <vector> | 12 #include <vector> |
| 10 | 13 |
| 11 #include "base/callback.h" | 14 #include "base/callback.h" |
| 12 #include "base/containers/scoped_ptr_hash_map.h" | 15 #include "base/containers/scoped_ptr_hash_map.h" |
| 16 #include "base/macros.h" |
| 13 #include "base/memory/scoped_ptr.h" | 17 #include "base/memory/scoped_ptr.h" |
| 14 #include "base/memory/weak_ptr.h" | 18 #include "base/memory/weak_ptr.h" |
| 15 #include "base/sequence_checker.h" | 19 #include "base/sequence_checker.h" |
| 16 #include "base/threading/sequenced_worker_pool.h" | 20 #include "base/threading/sequenced_worker_pool.h" |
| 17 #include "chrome/browser/sync_file_system/drive_backend/task_dependency_manager.
h" | 21 #include "chrome/browser/sync_file_system/drive_backend/task_dependency_manager.
h" |
| 18 #include "chrome/browser/sync_file_system/sync_callbacks.h" | 22 #include "chrome/browser/sync_file_system/sync_callbacks.h" |
| 19 #include "chrome/browser/sync_file_system/sync_status_code.h" | 23 #include "chrome/browser/sync_file_system/sync_status_code.h" |
| 20 #include "chrome/browser/sync_file_system/task_logger.h" | 24 #include "chrome/browser/sync_file_system/task_logger.h" |
| 21 | 25 |
| 22 namespace base { | 26 namespace base { |
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| 112 // existing background task to finish. | 116 // existing background task to finish. |
| 113 // Upon the task is ready to run as a background task, calls |continuation| | 117 // Upon the task is ready to run as a background task, calls |continuation| |
| 114 // with new SyncTaskToken. | 118 // with new SyncTaskToken. |
| 115 // Note that this function once releases previous |task_blocker| before | 119 // Note that this function once releases previous |task_blocker| before |
| 116 // applying new |task_blocker|. So, any other task may be run before | 120 // applying new |task_blocker|. So, any other task may be run before |
| 117 // invocation of |continuation|. | 121 // invocation of |continuation|. |
| 118 static void UpdateTaskBlocker(scoped_ptr<SyncTaskToken> current_task_token, | 122 static void UpdateTaskBlocker(scoped_ptr<SyncTaskToken> current_task_token, |
| 119 scoped_ptr<TaskBlocker> task_blocker, | 123 scoped_ptr<TaskBlocker> task_blocker, |
| 120 const Continuation& continuation); | 124 const Continuation& continuation); |
| 121 | 125 |
| 122 bool IsRunningTask(int64 task_token_id) const; | 126 bool IsRunningTask(int64_t task_token_id) const; |
| 123 | 127 |
| 124 void DetachFromSequence(); | 128 void DetachFromSequence(); |
| 125 bool ShouldTrackTaskToken() const; | 129 bool ShouldTrackTaskToken() const; |
| 126 | 130 |
| 127 private: | 131 private: |
| 128 struct PendingTask { | 132 struct PendingTask { |
| 129 base::Closure task; | 133 base::Closure task; |
| 130 Priority priority; | 134 Priority priority; |
| 131 int64 seq; | 135 int64_t seq; |
| 132 | 136 |
| 133 PendingTask(); | 137 PendingTask(); |
| 134 PendingTask(const base::Closure& task, Priority pri, int seq); | 138 PendingTask(const base::Closure& task, Priority pri, int seq); |
| 135 ~PendingTask(); | 139 ~PendingTask(); |
| 136 }; | 140 }; |
| 137 | 141 |
| 138 struct PendingTaskComparator { | 142 struct PendingTaskComparator { |
| 139 bool operator()(const PendingTask& left, | 143 bool operator()(const PendingTask& left, |
| 140 const PendingTask& right) const; | 144 const PendingTask& right) const; |
| 141 }; | 145 }; |
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| 169 // If |token| is non-nullptr, put |token| back to |token_| beforehand. | 173 // If |token| is non-nullptr, put |token| back to |token_| beforehand. |
| 170 void MaybeStartNextForegroundTask(scoped_ptr<SyncTaskToken> token); | 174 void MaybeStartNextForegroundTask(scoped_ptr<SyncTaskToken> token); |
| 171 | 175 |
| 172 base::WeakPtr<Client> client_; | 176 base::WeakPtr<Client> client_; |
| 173 | 177 |
| 174 // Owns running SyncTask to cancel the task on SyncTaskManager deletion. | 178 // Owns running SyncTask to cancel the task on SyncTaskManager deletion. |
| 175 scoped_ptr<SyncTask> running_foreground_task_; | 179 scoped_ptr<SyncTask> running_foreground_task_; |
| 176 | 180 |
| 177 // Owns running backgrounded SyncTask to cancel the task on SyncTaskManager | 181 // Owns running backgrounded SyncTask to cancel the task on SyncTaskManager |
| 178 // deletion. | 182 // deletion. |
| 179 base::ScopedPtrHashMap<int64, scoped_ptr<SyncTask>> running_background_tasks_; | 183 base::ScopedPtrHashMap<int64_t, scoped_ptr<SyncTask>> |
| 184 running_background_tasks_; |
| 180 | 185 |
| 181 size_t maximum_background_task_; | 186 size_t maximum_background_task_; |
| 182 | 187 |
| 183 // Holds pending continuation to move task to background. | 188 // Holds pending continuation to move task to background. |
| 184 base::Closure pending_backgrounding_task_; | 189 base::Closure pending_backgrounding_task_; |
| 185 | 190 |
| 186 std::priority_queue<PendingTask, std::vector<PendingTask>, | 191 std::priority_queue<PendingTask, std::vector<PendingTask>, |
| 187 PendingTaskComparator> pending_tasks_; | 192 PendingTaskComparator> pending_tasks_; |
| 188 int64 pending_task_seq_; | 193 int64_t pending_task_seq_; |
| 189 int64 task_token_seq_; | 194 int64_t task_token_seq_; |
| 190 | 195 |
| 191 // Absence of |token_| implies a task is running. Incoming tasks should | 196 // Absence of |token_| implies a task is running. Incoming tasks should |
| 192 // wait for the task to finish in |pending_tasks_| if |token_| is null. | 197 // wait for the task to finish in |pending_tasks_| if |token_| is null. |
| 193 // Each task must take TaskToken instance from |token_| and must hold it | 198 // Each task must take TaskToken instance from |token_| and must hold it |
| 194 // until it finished. And the task must return the instance through | 199 // until it finished. And the task must return the instance through |
| 195 // NotifyTaskDone when the task finished. | 200 // NotifyTaskDone when the task finished. |
| 196 scoped_ptr<SyncTaskToken> token_; | 201 scoped_ptr<SyncTaskToken> token_; |
| 197 | 202 |
| 198 TaskDependencyManager dependency_manager_; | 203 TaskDependencyManager dependency_manager_; |
| 199 | 204 |
| 200 scoped_refptr<base::SequencedTaskRunner> task_runner_; | 205 scoped_refptr<base::SequencedTaskRunner> task_runner_; |
| 201 scoped_refptr<base::SequencedWorkerPool> worker_pool_; | 206 scoped_refptr<base::SequencedWorkerPool> worker_pool_; |
| 202 base::SequenceChecker sequence_checker_; | 207 base::SequenceChecker sequence_checker_; |
| 203 | 208 |
| 204 base::WeakPtrFactory<SyncTaskManager> weak_ptr_factory_;; | 209 base::WeakPtrFactory<SyncTaskManager> weak_ptr_factory_;; |
| 205 | 210 |
| 206 DISALLOW_COPY_AND_ASSIGN(SyncTaskManager); | 211 DISALLOW_COPY_AND_ASSIGN(SyncTaskManager); |
| 207 }; | 212 }; |
| 208 | 213 |
| 209 } // namespace drive_backend | 214 } // namespace drive_backend |
| 210 } // namespace sync_file_system | 215 } // namespace sync_file_system |
| 211 | 216 |
| 212 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_ | 217 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_ |
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