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/* Copyright (C)2004 Landmark Graphics Corporation
* Copyright (C)2005 Sun Microsystems, Inc.
*
* This library is free software and may be redistributed and/or modified under
* the terms of the wxWindows Library License, Version 3.1 or (at your option)
* any later version. The full license is in the LICENSE.txt file included
* with this distribution.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* wxWindows Library License for more details.
*/
#ifndef __RRTIMER_H__
#define __RRTIMER_H__
#ifdef __cplusplus
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/time.h>
#endif
class rrtimer
{
public:
rrtimer(void) : t1(0.0)
{
#ifdef _WIN32
highres=false; tick=0.001;
LARGE_INTEGER Frequency;
if(QueryPerformanceFrequency(&Frequency)!=0)
{
tick=(double)1.0/(double)(Frequency.QuadPart);
highres=true;
}
#endif
}
void start(void)
{
t1=time();
}
double time(void)
{
#ifdef _WIN32
if(highres)
{
LARGE_INTEGER Time;
QueryPerformanceCounter(&Time);
return((double)(Time.QuadPart)*tick);
}
else
return((double)GetTickCount()*tick);
#else
struct timeval __tv;
gettimeofday(&__tv, (struct timezone *)NULL);
return((double)(__tv.tv_sec)+(double)(__tv.tv_usec)*0.000001);
#endif
}
double elapsed(void)
{
return time()-t1;
}
private:
#ifdef _WIN32
bool highres; double tick;
#endif
double t1;
};
#endif // __cplusplus
#ifdef _WIN32
#include <windows.h>
__inline double rrtime(void)
{
LARGE_INTEGER Frequency, Time;
if(QueryPerformanceFrequency(&Frequency)!=0)
{
QueryPerformanceCounter(&Time);
return (double)Time.QuadPart/(double)Frequency.QuadPart;
}
else return (double)GetTickCount()*0.001;
}
#else
#include <sys/time.h>
#ifdef sun
#define __inline inline
#endif
static __inline double rrtime(void)
{
struct timeval __tv;
gettimeofday(&__tv, (struct timezone *)NULL);
return((double)__tv.tv_sec+(double)__tv.tv_usec*0.000001);
}
#endif
#endif
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