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Profiling: measure time on POSIX systems using clock_gettime
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@ -14,6 +14,7 @@ set(SRCS BreakPoints.cpp
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NandPaths.cpp
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Network.cpp
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PcapFile.cpp
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PerformanceCounter.cpp
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SettingsHandler.cpp
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SDCardUtil.cpp
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StringUtil.cpp
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48
Source/Core/Common/PerformanceCounter.cpp
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48
Source/Core/Common/PerformanceCounter.cpp
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@ -0,0 +1,48 @@
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// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#if !defined(_WIN32)
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#include <cstdint>
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#include <ctime>
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#include <unistd.h>
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#include "Common/CommonTypes.h"
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#include "Common/PerformanceCounter.h"
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#if defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0
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#if defined(_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK>0
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#define DOLPHIN_CLOCK CLOCK_MONOTONIC
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#else
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#define DOLPHIN_CLOCK CLOCK_REALTIME
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#endif
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#endif
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bool QueryPerformanceCounter(u64* out)
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{
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#if defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0
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timespec tp;
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if (clock_gettime(DOLPHIN_CLOCK, &tp))
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return false;
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*out = (u64) tp.tv_nsec + (u64) 1000000000 * (u64) tp.tv_sec;
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return true;
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#else
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*out = 0;
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return false;
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#endif
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}
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bool QueryPerformanceFrequency(u64* out)
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{
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#if defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0
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*out = 1000000000;
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return true;
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#else
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*out = 1;
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return false;
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#endif
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}
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#endif
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17
Source/Core/Common/PerformanceCounter.h
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17
Source/Core/Common/PerformanceCounter.h
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@ -0,0 +1,17 @@
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// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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#if !defined(_WIN32)
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#include <cstdint>
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#include "Common/CommonTypes.h"
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typedef u64 LARGE_INTEGER;
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bool QueryPerformanceCounter(u64* out);
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bool QueryPerformanceFrequency(u64* lpFrequency);
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#endif
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