| // Copyright 2020 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_METRICS_TOTAL_FRAME_COUNTER_H_ |
| #define CC_METRICS_TOTAL_FRAME_COUNTER_H_ |
| |
| #include "base/time/time.h" |
| #include "cc/cc_export.h" |
| |
| namespace viz { |
| struct BeginFrameArgs; |
| } |
| |
| namespace cc { |
| |
| // This class keeps track of how many vsyncs (frames) the compositor was visible |
| // for. |
| class CC_EXPORT TotalFrameCounter { |
| public: |
| TotalFrameCounter(); |
| |
| TotalFrameCounter(const TotalFrameCounter&) = delete; |
| TotalFrameCounter& operator=(const TotalFrameCounter&) = delete; |
| |
| void Reset(); |
| |
| void OnShow(base::TimeTicks timestamp); |
| void OnHide(base::TimeTicks timestamp); |
| void OnBeginFrame(const viz::BeginFrameArgs& args); |
| |
| size_t ComputeTotalVisibleFrames(base::TimeTicks until) const; |
| |
| size_t total_frames() const { return total_frames_; } |
| |
| void set_total_frames_for_testing(size_t total_frames) { |
| total_frames_ = total_frames; |
| } |
| |
| private: |
| void UpdateTotalFramesSinceLastVisible(base::TimeTicks until); |
| |
| size_t total_frames_ = 0; |
| |
| // The most recent vsync-interval set by the display compositor. |
| // Set only if the compositor is currently visible, otherwise not set. |
| base::TimeDelta latest_interval_; |
| |
| // The time the compositor was made visible. |
| // Set only if the compositor is currently visible, otherwise not set. |
| base::TimeTicks last_shown_timestamp_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_METRICS_TOTAL_FRAME_COUNTER_H_ |