main.c

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <unistd.h> //Header file for sleep(). man 3 sleep for details.

#include "watchdog.h"

void *myThreadFunc(void *arg) {
  while (1) {
    sleep(5);
    feed_the_dog(pthread_self());
  }
  return NULL;
}

void graceful_restart(void *a) { printf("G R A C E F U L RESTART\n"); }
void graceful_task_restart(void *a) { printf("TASK RESET\n"); }

int main() {
  pthread_t thread_id, thread2_id, wdt_id;

  TaskListEntry a;
  a.next = NULL;
  a.prev = NULL;
  a.last_run = current_timestamp();
  a.task_id = wdt_id;

  init_the_dog(1, graceful_restart); // sleep time in second

  // create two thread for common task
  pthread_create(&thread_id, NULL, myThreadFunc, NULL);
  pthread_create(&thread2_id, NULL, myThreadFunc, NULL);
  // create the watchdog task
  pthread_create(&wdt_id, NULL, watchDog, NULL);

  // subscribe two normal tasks to the dog watchlist
  add_to_watchlist(thread_id, 4000,
                   graceful_task_restart); // timeout in milli seconds
  add_to_watchlist(thread_id, 10000,
                   graceful_task_restart); // timeout in milli seconds

  // prevent the program from exiting!
  pthread_join(thread_id, NULL);

  exit(0);
}