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