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// 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 CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_
#define CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "cc/debug/rendering_stats.h"
namespace cc {
// RenderingStatsInstrumentation is shared among threads and manages conditional
// recording of rendering stats into a private RenderingStats instance.
class CC_EXPORT RenderingStatsInstrumentation {
public:
static scoped_ptr<RenderingStatsInstrumentation> Create();
virtual ~RenderingStatsInstrumentation();
// Return copy of current impl thread rendering stats.
RenderingStats impl_thread_rendering_stats();
// Return the accumulated, combined rendering stats.
RenderingStats GetRenderingStats();
// Add current impl thread rendering stats to accumulator and
// clear current stats.
void AccumulateAndClearImplThreadStats();
// Read and write access to the record_rendering_stats_ flag is not locked to
// improve performance. The flag is commonly turned off and hardly changes
// it's value during runtime.
bool record_rendering_stats() const { return record_rendering_stats_; }
void set_record_rendering_stats(bool record_rendering_stats) {
if (record_rendering_stats_ != record_rendering_stats)
record_rendering_stats_ = record_rendering_stats;
}
void IncrementFrameCount(int64 count);
void AddVisibleContentArea(int64 area);
void AddApproximatedVisibleContentArea(int64 area);
void AddCheckerboardedVisibleContentArea(int64 area);
void AddCheckerboardedNoRecordingContentArea(int64 area);
void AddCheckerboardedNeedsRasterContentArea(int64 area);
void AddDrawDuration(base::TimeDelta draw_duration,
base::TimeDelta draw_duration_estimate);
void AddBeginMainFrameToCommitDuration(
base::TimeDelta begin_main_frame_to_commit_duration,
base::TimeDelta begin_main_frame_to_commit_duration_estimate);
void AddCommitToActivateDuration(
base::TimeDelta commit_to_activate_duration,
base::TimeDelta commit_to_activate_duration_estimate);
protected:
RenderingStatsInstrumentation();
private:
RenderingStats impl_thread_rendering_stats_;
RenderingStats impl_thread_rendering_stats_accu_;
bool record_rendering_stats_;
base::Lock lock_;
DISALLOW_COPY_AND_ASSIGN(RenderingStatsInstrumentation);
};
} // namespace cc
#endif // CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_