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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_gfx_layers_composite_Diagnostics_h
#define mozilla_gfx_layers_composite_Diagnostics_h
#include "FPSCounter.h"
#include "mozilla/Maybe.h"
#include "mozilla/StaticPrefs_layers.h"
#include "mozilla/TimeStamp.h"
#include <deque>
#include <string>
#include <utility>
namespace mozilla {
namespace layers {
class PaintTiming;
class TimedMetric {
typedef std::pair<float, TimeStamp> Entry;
public:
void Add(float aValue) {
if (mHistory.size() > kMaxHistory) {
mHistory.pop_front();
}
mHistory.push_back(Entry(aValue, TimeStamp::Now()));
}
float Average() const;
bool Empty() const { return mHistory.empty(); }
private:
static const size_t kMaxHistory = 60;
std::deque<Entry> mHistory;
};
// These statistics are collected by layers backends, preferably by the GPU
struct GPUStats {
GPUStats() : mInvalidPixels(0), mScreenPixels(0), mPixelsFilled(0) {}
uint32_t mInvalidPixels;
uint32_t mScreenPixels;
uint32_t mPixelsFilled;
Maybe<float> mDrawTime;
};
// Collects various diagnostics about layers performance.
class Diagnostics {
public:
Diagnostics();
void RecordPaintTimes(const PaintTiming& aPaintTimes);
void RecordUpdateTime(float aValue) { mUpdateMs.Add(aValue); }
void RecordPrepareTime(float aValue) { mPrepareMs.Add(aValue); }
void RecordCompositeTime(float aValue) { mCompositeMs.Add(aValue); }
void AddTxnFrame() { mTransactionFps.AddFrame(TimeStamp::Now()); }
std::string GetFrameOverlayString(const GPUStats& aStats);
class Record {
public:
explicit Record(TimeStamp aStart = TimeStamp()) {
if (StaticPrefs::layers_acceleration_draw_fps()) {
mStart = aStart.IsNull() ? TimeStamp::Now() : aStart;
}
}
bool Recording() const { return !mStart.IsNull(); }
float Duration() const {
return (TimeStamp::Now() - mStart).ToMilliseconds();
}
private:
TimeStamp mStart;
};
private:
FPSCounter mCompositeFps;
FPSCounter mTransactionFps;
TimedMetric mDlbMs;
TimedMetric mDlb2Ms;
TimedMetric mFlbMs;
TimedMetric mRasterMs;
TimedMetric mSerializeMs;
TimedMetric mSendMs;
TimedMetric mUpdateMs;
TimedMetric mPrepareMs;
TimedMetric mCompositeMs;
TimedMetric mGPUDrawMs;
};
} // namespace layers
} // namespace mozilla
#endif // mozilla_gfx_layers_composite_Diagnostics_h
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