Index: components/scheduler/renderer/coarse_duration_timer.h |
diff --git a/components/scheduler/renderer/coarse_duration_timer.h b/components/scheduler/renderer/coarse_duration_timer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..bdb44d8b1c4da3bd2b5825af2a9d065bb8b8aa2a |
--- /dev/null |
+++ b/components/scheduler/renderer/coarse_duration_timer.h |
@@ -0,0 +1,38 @@ |
+// Copyright 2016 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 COMPONENTS_SCHEDULER_RENDERER_COARSE_DURATION_TIMER_H_ |
+#define COMPONENTS_SCHEDULER_RENDERER_COARSE_DURATION_TIMER_H_ |
+ |
+#include "base/message_loop/message_loop.h" |
+#include "base/optional.h" |
+#include "base/time/time.h" |
+ |
+namespace scheduler { |
+ |
+// TODO - add locking things. |
tdresser
2016/05/30 19:07:46
^
|
+class CoarseDurationTimer : public base::MessageLoop::RecentTimeObserver { |
+ public: |
+ // RecentTimeObserver implementation: |
+ void OnUpdateRecentTime(base::TimeTicks time) override; |
+ |
+ void BeginInterval(); |
+ base::TimeDelta EndInterval(); |
+ base::TimeTicks most_recent_time() { return most_recent_time_; } |
+ |
+ private: |
+ enum class State { |
+ OUTSIDE_INTERVAL, |
+ WITHIN_INTERVAL_NEEDS_START, |
+ WITHIN_INTERVAL |
+ }; |
+ |
+ State state_; |
+ base::TimeTicks start_time_; |
+ base::TimeTicks most_recent_time_; |
+}; |
+ |
+} // namespace scheduler |
+ |
+#endif // COMPONENTS_SCHEDULER_RENDERER_COARSE_DURATION_TIMER_H_ |