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Copy pathtimer.cpp
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116 lines (86 loc) · 1.71 KB
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#include "timer.h"
#include <stdlib.h>
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#define VC_EXTRALEAN
#include <windows.h>
#pragma comment(lib, "user32")
#endif
#ifdef __linux__
#include <time.h>
#define NANOSECONDS_PER_SEC 1000000000
#endif
CPerfCounter::CPerfCounter() : _clocks(0), _start(0)
{
#ifdef _WIN32
QueryPerformanceFrequency((LARGE_INTEGER *)&_freq);
#endif
#ifdef __linux__
_freq = NANOSECONDS_PER_SEC;
#endif
}
CPerfCounter::~CPerfCounter()
{
// EMPTY!
}
void
CPerfCounter::Start(void)
{
#ifdef _WIN32
if( _start )
{
MessageBox(NULL, "Bad Perf Counter Start", "Error", MB_OK);
exit(0);
}
QueryPerformanceCounter((LARGE_INTEGER *)&_start);
#endif
#ifdef __linux__
struct timespec s;
clock_gettime(CLOCK_MONOTONIC, &s);
_start = (i64)s.tv_sec * NANOSECONDS_PER_SEC + (i64)s.tv_nsec ;
#endif
}
void
CPerfCounter::Stop(void)
{
i64 n;
#ifdef _WIN32
if( !_start )
{
MessageBox(NULL, "Bad Perf Counter Stop", "Error", MB_OK);
exit(0);
}
QueryPerformanceCounter((LARGE_INTEGER *)&n);
#endif
#ifdef __linux__
struct timespec s;
clock_gettime(CLOCK_MONOTONIC, &s);
n = (i64)s.tv_sec * NANOSECONDS_PER_SEC + (i64)s.tv_nsec ;
#endif
n -= _start;
_start = 0;
_clocks += n;
}
void
CPerfCounter::Reset(void)
{
#ifdef _WIN32
if( _start )
{
MessageBox(NULL, "Bad Perf Counter Reset", "Error", MB_OK);
exit(0);
}
#endif
_clocks = 0;
}
double
CPerfCounter::GetElapsedTime(void)
{
#ifdef _WIN32
if( _start ) {
MessageBox(NULL, "Trying to get time while still running.", "Error", MB_OK);
exit(0);
}
#endif
return (double)_clocks / (double)_freq;
}