how to compute the time needed to create and destroy processes and threads in C-CodePudding

I'm doing an exercise which require the computation of the time needed to create and destroy a thread and a process, and then compare them.

I really don’t know how to calculate the time of these operations. Anybody got an idea?

CodePudding user response：

On linux, you can use the time command:

time ./your_program

CodePudding user response：

You can use a timer:

#define _DEFAULT_SOURCE

#include <stdio.h>
#include <sys/time.h>

int main(void)
{
    struct timeval start, end, res;

    gettimeofday(&start, NULL);

    // Do your stuff

    gettimeofday(&end, NULL);
    timersub(&end, &start, &res);
    printf("Time elapsed: %ld.ld\n", (long int)res.tv_sec, (long int)res.tv_usec);
    return 0;
}