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#include <time.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include "cpucycles-impl.h"
static long long tod(void)
{
struct timeval t;
gettimeofday(&t,(struct timezone *) 0);
return t.tv_sec * (long long) 1000000 + t.tv_usec;
}
long long todstart;
long long todend;
long long cpustart;
long long cpuend;
long long cyclespersecond;
long long cyclespertod;
long long t[1001];
int main()
{
int j;
int i;
if (!cpucycles()) {
fprintf(stderr,"cpucycles() = %lld\n",cpucycles());
return 100;
}
for (i = 0;i <= 1000;++i) t[i] = cpucycles();
for (i = 0;i < 1000;++i) if (t[i] > t[i + 1]) {
fprintf(stderr,"t[%d] = %lld\n",i,t[i]);
fprintf(stderr,"t[%d] = %lld\n",i + 1,t[i + 1]);
fprintf(stderr,"cpucycles_persecond() = %lld\n",cpucycles_persecond());
return 100;
}
if (t[0] == t[1000]) {
fprintf(stderr,"t[%d] = %lld\n",0,t[0]);
fprintf(stderr,"t[%d] = %lld\n",1000,t[1000]);
fprintf(stderr,"cpucycles_persecond() = %lld\n",cpucycles_persecond());
return 100;
}
cyclespersecond = cpucycles_persecond();
if (cyclespersecond <= 0) {
fprintf(stderr,"cpucycles_persecond() = %lld\n",cyclespersecond);
return 100;
}
todstart = tod();
cpustart = cpucycles();
for (j = 0;j < 1000;++j) for (i = 0;i <= 1000;++i) t[i] = t[i] + i + j;
todend = tod();
cpuend = cpucycles();
todend -= todstart;
cpuend -= cpustart;
cyclespertod = (long long) (((double) cpuend) * 1000000.0 / (double) todend);
if (cyclespertod > 10 * cyclespersecond) {
fprintf(stderr,"cyclespertod = %lld, cyclespersecond = %lld\n",cyclespertod,cyclespersecond);
return 100;
}
for (i = 0;i <= 1000;++i) t[i] = cpucycles();
printf("%s",cpucycles_implementation);
printf(" %lld",cyclespersecond);
printf(" %lld",cyclespertod);
for (i = 0;i < 64;++i) printf(" %lld",t[i + 1] - t[i]);
printf("\n");
return 0;
}
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