4ed75287ae
This breaks a bunch of circular dependencies between tools and gm and bench. BUG=skia: R=tfarina@chromium.org, mtklein@google.com Author: mtklein@chromium.org Review URL: https://codereview.chromium.org/344213003
74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef Timer_DEFINED
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#define Timer_DEFINED
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#include "SkTypes.h"
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#if defined(SK_BUILD_FOR_WIN32)
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#include "SysTimer_windows.h"
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#elif defined(SK_BUILD_FOR_MAC)
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#include "SysTimer_mach.h"
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#elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID)
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#include "SysTimer_posix.h"
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#endif
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#if SK_SUPPORT_GPU
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#include "GpuTimer.h"
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#endif
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class SkGLContextHelper;
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/**
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* SysTimers and GpuTimers are implemented orthogonally.
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* This class combines 2 SysTimers and a GpuTimer into one single,
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* platform specific Timer with a simple interface. The truncated
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* timer doesn't include the time required for the GPU to finish
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* its rendering. It should always be <= the un-truncated system
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* times and (for GPU configurations) can be used to roughly (very
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* roughly) gauge the GPU load/backlog.
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*/
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class Timer {
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public:
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explicit Timer(SkGLContextHelper* gl = NULL);
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void start();
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void truncatedEnd();
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void end();
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// All times in milliseconds.
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double fCpu;
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double fWall;
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double fTruncatedCpu;
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double fTruncatedWall;
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double fGpu;
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private:
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SysTimer fSysTimer;
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SysTimer fTruncatedSysTimer;
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#if SK_SUPPORT_GPU
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GpuTimer fGpuTimer;
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#endif
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};
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// Same as Timer above, supporting only fWall but with much lower overhead.
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// (Typically, ~30ns instead of Timer's ~1us.)
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class WallTimer {
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public:
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WallTimer();
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void start();
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void end();
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double fWall; // Milliseconds.
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private:
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SysTimer fSysTimer;
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};
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#endif
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