profile different clock types - Linux

profile_clocks.c

#include "time.h"
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
# include <sys/resource.h>

struct timeval curtime;
struct timespec tp;
struct rusage usage;

int main(int argc, char **argv)
{
    int iterations = atoi(argv[1]);
    int clk_type = atoi(argv[2]);

    for (int i = 0; i < iterations; i++)
    {
        switch(clk_type) {
            case 1:
                gettimeofday(&curtime, NULL);
                break;
            case 2:
                clock_gettime(CLOCK_MONOTONIC, &tp);
                break;
            case 3:
                clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp);
                break;
            case 4:
                clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp);
                break;
            case 5:
                getrusage(RUSAGE_SELF, &usage);
                break;
        }
    }
    return 0;
}