| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_PROCESS_RUNNER_H_ |
| #define CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_PROCESS_RUNNER_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/timer/timer.h" |
| #include "chrome/browser/sync_file_system/sync_callbacks.h" |
| #include "chrome/browser/sync_file_system/sync_service_state.h" |
| |
| namespace sync_file_system { |
| |
| class SyncFileSystemService; |
| |
| // A base class to schedule a sync. |
| // Each subclass must implement StartSync(). |
| // An instance of this class is supposed to be owned by SyncFileSystemService. |
| // |
| // Note that multiple SyncProcessRunner doesn't coordinate its sync schedule |
| // with each other. |
| class SyncProcessRunner { |
| public: |
| typedef base::Callback<void(const SyncStatusCallback&)> Task; |
| SyncProcessRunner(const std::string& name, |
| SyncFileSystemService* sync_service); |
| virtual ~SyncProcessRunner(); |
| |
| // Subclass must implement this. |
| virtual void StartSync(const SyncStatusCallback& callback) = 0; |
| |
| // Schedules a new sync. |
| void Schedule(); |
| void ScheduleIfNotRunning(); |
| |
| protected: |
| void OnChangesUpdated(int64 pending_changes); |
| SyncFileSystemService* sync_service() { return sync_service_; } |
| |
| // Returns the current service state. Default implementation returns |
| // sync_service()->GetSyncServiceState(). |
| virtual SyncServiceState GetServiceState(); |
| |
| private: |
| void Finished(SyncStatusCode status); |
| void Run(); |
| void ScheduleInternal(int64 delay); |
| |
| std::string name_; |
| SyncFileSystemService* sync_service_; |
| base::OneShotTimer<SyncProcessRunner> timer_; |
| base::Time last_scheduled_; |
| int64 current_delay_; |
| int64 last_delay_; |
| int64 pending_changes_; |
| bool running_; |
| base::WeakPtrFactory<SyncProcessRunner> factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SyncProcessRunner); |
| }; |
| |
| } // namespace sync_file_system |
| |
| #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_PROCESS_RUNNER_H_ |