Reapeatdly calling a function in a thread

Question

Hi,
I'm facing an issue, i need to call a function after every 10 seconds in a thread.
I'm not sure if i can use SIGALRM in this case or SELECT.
Please suggest , how this can be efficienlty achieved.
Thanks

Answer 1

There are 2 things that you have to implement:
1. create a thread
2. write a loop, that will do sleep(10) and call the function
I suppose you know how to create a thread, so to answer
your question here is a simple program, that sleeps 10
seconds and calls function f1().
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define TEN_SECONDS  10
int f1(int i) {
    return system("date");
int main(int argc, char**argv) {
    int i;
    for (i = 0; i < 5; i++) {
        sleep(TEN_SECONDS);
        f1(i);
    return 0;
}Thanks,
Nik