| // 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 STORAGE_BROWSER_FILEAPI_TIMED_TASK_HELPER_H_ |
| #define STORAGE_BROWSER_FILEAPI_TIMED_TASK_HELPER_H_ |
| |
| #include <memory> |
| |
| #include "base/callback.h" |
| #include "base/location.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/time/time.h" |
| #include "storage/browser/storage_browser_export.h" |
| |
| namespace base { |
| class SequencedTaskRunner; |
| } |
| |
| namespace storage { |
| |
| // Works similarly as base::Timer, but takes SequencedTaskRunner and |
| // runs tasks on it (instead of implicitly bound to a thread). |
| // TODO(kinuko): This has nothing to do with fileapi. Move somewhere |
| // more common place. |
| class STORAGE_EXPORT TimedTaskHelper { |
| public: |
| explicit TimedTaskHelper(base::SequencedTaskRunner* task_runner); |
| ~TimedTaskHelper(); |
| |
| bool IsRunning() const; |
| void Start(const tracked_objects::Location& posted_from, |
| base::TimeDelta delay, |
| const base::Closure& user_task); |
| void Reset(); |
| |
| private: |
| struct Tracker; |
| static void Fired(std::unique_ptr<Tracker> tracker); |
| |
| void OnFired(std::unique_ptr<Tracker> tracker); |
| void PostDelayedTask(std::unique_ptr<Tracker> tracker, base::TimeDelta delay); |
| |
| scoped_refptr<base::SequencedTaskRunner> task_runner_; |
| tracked_objects::Location posted_from_; |
| base::TimeDelta delay_; |
| base::Closure user_task_; |
| |
| base::TimeTicks desired_run_time_; |
| |
| // This is set to non-null and owned by a timer task while timer is running. |
| Tracker* tracker_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TimedTaskHelper); |
| }; |
| |
| } // namespace storage |
| |
| #endif // STORAGE_BROWSER_FILEAPI_TIMED_TASK_HELPER_H_ |