#include <stdio.h>
#include <stdlib.h>
#include "cputime.h"
#include <CoreFoundation/CoreFoundation.h>
#define WAIT_TIME_SEC 1.0
int main()
{
CPUTime cputimeStart, cputimeEnd;
CFAbsoluteTime start;
printf("Resolution on this machine: %f nanoseconds\n",
CPUTimeDeltaUs(0ULL, 1ULL) * 1000.0);
start = CFAbsoluteTimeGetCurrent();
cputimeStart = CPUTimeRead();
while((CFAbsoluteTimeGetCurrent() - start) < WAIT_TIME_SEC) {
;
}
cputimeEnd = CPUTimeRead();
printf("Waited %f sec; elapsed CPUTime %f s\n",
WAIT_TIME_SEC, CPUTimeDeltaSec(cputimeStart, cputimeEnd));
printf("cputimeStart %08X:%08X cputimeEnd %08X:%08X\n",
(unsigned)(cputimeStart >> 32),
(unsigned)(cputimeStart & 0xffffffffULL),
(unsigned)(cputimeEnd >> 32),
(unsigned)(cputimeEnd & 0xffffffffULL));
printf("cputime raw delta %lu\n",
(unsigned long)(cputimeEnd - cputimeStart));
return 0;
}