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#include <stdbool.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
double
time_benchmark(void (*run)(void), char *name)
{
struct timespec start, end;
double tdiff, tdsec, tdnano;
printf("\n");
fflush(stdout);
if (run == NULL) {
printf("> %s: nothing to run!\n", name);
fflush(stdout);
return -1.0;
}
printf("Benchmark: %s\n\n", name);
printf("==========\n");
fflush(stdout);
clock_gettime(CLOCK_MONOTONIC, &start);
run();
clock_gettime(CLOCK_MONOTONIC, &end);
tdsec = end.tv_sec - start.tv_sec;
tdnano = end.tv_nsec - start.tv_nsec;
tdiff = tdsec + 1e-9 * tdnano;
printf("==========\n");
printf("\nTotal time: %.4fs\n", tdiff);
fflush(stdout);
return tdiff;
}
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