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//========================================================================
//
// GooTimer.cc
//
// This file is licensed under GPLv2 or later
//
// Copyright 2005 Jonathan Blandford <jrb@redhat.com>
// Copyright 2007 Krzysztof Kowalczyk <kkowalczyk@gmail.com>
// Copyright 2010 Hib Eris <hib@hiberis.nl>
// Inspired by gtimer.c in glib, which is Copyright 2000 by the GLib Team
//
//========================================================================
#include <config.h>
#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
#include "GooTimer.h"
#include <string.h>
#define USEC_PER_SEC 1000000
//------------------------------------------------------------------------
// GooTimer
//------------------------------------------------------------------------
GooTimer::GooTimer() {
start();
}
void GooTimer::start() {
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&start_time, NULL);
#elif defined(_WIN32)
QueryPerformanceCounter(&start_time);
#endif
active = true;
}
void GooTimer::stop() {
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&end_time, NULL);
#elif defined(_WIN32)
QueryPerformanceCounter(&end_time);
#endif
active = false;
}
#ifdef HAVE_GETTIMEOFDAY
double GooTimer::getElapsed()
{
double total;
struct timeval elapsed;
if (active)
gettimeofday(&end_time, NULL);
if (start_time.tv_usec > end_time.tv_usec) {
end_time.tv_usec += USEC_PER_SEC;
end_time.tv_sec--;
}
elapsed.tv_usec = end_time.tv_usec - start_time.tv_usec;
elapsed.tv_sec = end_time.tv_sec - start_time.tv_sec;
total = elapsed.tv_sec + ((double) elapsed.tv_usec / 1e6);
if (total < 0)
total = 0;
return total;
}
#elif defined(_WIN32)
double GooTimer::getElapsed()
{
LARGE_INTEGER freq;
double time_in_secs;
QueryPerformanceFrequency(&freq);
if (active)
QueryPerformanceCounter(&end_time);
time_in_secs = (double)(end_time.QuadPart-start_time.QuadPart)/(double)freq.QuadPart;
return time_in_secs * 1000.0;
}
#else
double GooTimer::getElapsed()
{
#warning "no support for GooTimer"
return 0;
}
#endif
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