24 rader
565 B
C
24 rader
565 B
C
#include "cmPrefix.h"
|
|
#include "cmGlobal.h"
|
|
#include "cmTime.h"
|
|
|
|
void cmTimeGet( cmTimeSpec_t* t )
|
|
{ clock_gettime(CLOCK_REALTIME,t); }
|
|
|
|
|
|
// this assumes that the seconds have been normalized to a recent start time
|
|
// so as to avoid overflow
|
|
unsigned cmTimeElapsedMicros( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 )
|
|
{
|
|
// convert seconds to usecs
|
|
long u0 = t0->tv_sec * 1000000;
|
|
long u1 = t1->tv_sec * 1000000;
|
|
|
|
// convert nanoseconds to usec
|
|
u0 += t0->tv_nsec / 1000;
|
|
u1 += t1->tv_nsec / 1000;
|
|
|
|
// take diff between t1 and t0
|
|
return u1 - u0;
|
|
}
|