Create timers (until you can't)

timertest.c

// Example:
//   cc -lrt timertest.c
//   ./a.out 128
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#include <time.h>

int
main(int argc, char *argv[])
{
        int timers = atoi(argv[1]);
        timer_t *timerid;
        struct sigevent *sev;
        int i;

        timerid = malloc((sizeof timerid) * timers);
        sev = malloc((sizeof sev) * timers);

        for (i = 0; i < timers; i++) {
                sev[i].sigev_notify = SIGEV_SIGNAL;
                sev[i].sigev_signo = SIGRTMIN;
                sev[i].sigev_value.sival_ptr = &timerid[i];
                printf("timer_create: %d\n", i);
                if (timer_create(CLOCK_MONOTONIC, &sev[i], &timerid[i]) == -1) {
                        fprintf(stderr, "timer_create: %d failed\n", i);
                        exit(1);
                }
        }

}