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Philip Whitfield
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/***********************************************************************
Copyright (c) 2008, 2009, Memo Akten, www.memo.tv
* Adapted for Windows by Juan Pablo Manson
* Cross platform architecture and convenience fucntions by James George
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of MSA Visuals nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***********************************************************************/
#include "ofxMSATimer.h"
#if defined(TARGET_OSX)
ofxMSATimer::ofxMSATimer(){
mach_timebase_info(&info);
machStartTime = mach_absolute_time();
getMicrosSinceLastCall();
}
uint64_t ofxMSATimer::getAppTimeMicros(){
return (mach_absolute_time() - machStartTime) * info.numer / (info.denom * 1000);
}
#elif defined(TARGET_WIN32)
ofxMSATimer::ofxMSATimer(){
QueryPerformanceFrequency(&ticksPerSecond);
QueryPerformanceCounter(&startTime);
getMicrosSinceLastCall();
}
uint64_t ofxMSATimer::getAppTimeMicros(){
QueryPerformanceCounter(&stopTime);
return ((stopTime.QuadPart - startTime.QuadPart) * 1000000) / ticksPerSecond.QuadPart;
}
#elif defined(TARGET_LINUX)
ofxMSATimer::ofxMSATimer(){
clock_gettime(CLOCK_MONOTONIC_RAW, &startTime);
getMicrosSinceLastCall();
}
timespec diff(timespec& start, timespec& end)
{
timespec temp;
if ((end.tv_nsec-start.tv_nsec)<0) {
temp.tv_sec = end.tv_sec-start.tv_sec-1;
temp.tv_nsec = 1000000000+end.tv_nsec-start.tv_nsec;
} else {
temp.tv_sec = end.tv_sec-start.tv_sec;
temp.tv_nsec = end.tv_nsec-start.tv_nsec;
}
return temp;
}
uint64_t ofxMSATimer::getAppTimeMicros(){
clock_gettime(CLOCK_MONOTONIC_RAW, &tmpTime);
timespec diffTime = diff(startTime, tmpTime);
return ((int64_t)diffTime.tv_sec*1000000000 + (int64_t)diffTime.tv_nsec)/1000;
}
#endif
float ofxMSATimer::getAppTimeSeconds(){
return getAppTimeMicros() / 1000000.0;
}
uint32_t ofxMSATimer::getAppTimeMillis(){
return getAppTimeMicros() / 1000;
}
float ofxMSATimer::getElapsedSeconds(){
return getElapsedMicros() / 1000000.0;
}
uint32_t ofxMSATimer::getElapsedMillis(){
return getElapsedMicros() / 1000;
}
float ofxMSATimer::getSecondsSinceLastCall(){
return getMicrosSinceLastCall() / 1000000.0;
}
uint32_t ofxMSATimer::getMillisSinceLastCall(){
return getMicrosSinceLastCall() / 1000;
}
uint64_t ofxMSATimer::getMicrosSinceLastCall(){
uint64_t ret = getAppTimeMicros() - lastCallTimeMicros;
lastCallTimeMicros = getAppTimeMicros();
return ret;
}
uint64_t ofxMSATimer::getElapsedMicros(){
return getAppTimeMicros() - timerStartTimeMicros;
}
void ofxMSATimer::setStartTime(){
timerStartTimeMicros = getAppTimeMicros();
}
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