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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_SCHEDULER_RENDERER_COARSE_DURATION_TIMER_H_ | |
6 #define COMPONENTS_SCHEDULER_RENDERER_COARSE_DURATION_TIMER_H_ | |
7 | |
8 #include "base/message_loop/message_loop.h" | |
9 #include "base/optional.h" | |
10 #include "base/time/time.h" | |
11 | |
12 namespace scheduler { | |
13 | |
14 // TODO - add locking things. | |
tdresser
2016/05/30 19:07:46
^
| |
15 class CoarseDurationTimer : public base::MessageLoop::RecentTimeObserver { | |
16 public: | |
17 // RecentTimeObserver implementation: | |
18 void OnUpdateRecentTime(base::TimeTicks time) override; | |
19 | |
20 void BeginInterval(); | |
21 base::TimeDelta EndInterval(); | |
22 base::TimeTicks most_recent_time() { return most_recent_time_; } | |
23 | |
24 private: | |
25 enum class State { | |
26 OUTSIDE_INTERVAL, | |
27 WITHIN_INTERVAL_NEEDS_START, | |
28 WITHIN_INTERVAL | |
29 }; | |
30 | |
31 State state_; | |
32 base::TimeTicks start_time_; | |
33 base::TimeTicks most_recent_time_; | |
34 }; | |
35 | |
36 } // namespace scheduler | |
37 | |
38 #endif // COMPONENTS_SCHEDULER_RENDERER_COARSE_DURATION_TIMER_H_ | |
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