#include <sys/types.h>
#include <sys/stat.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <syslog.h>
#include <string.h>

#define NTHREADS 10

void *threadFunc(void *arg)
{
  printf(".");
  fflush(stdout);
    // Sleep 10 seconds to give all procs a chance to start and to be bound to a cpu set
  sleep(10);
  while(1==1)
    {
      int a = 400;
      a * 400;
      a * 300;
      a / 15;
    }
}

int startThreads(int nthreads)
{
  printf("Starting %d CPU threads: ", NTHREADS);
  pthread_t pta[nthreads];
  for ( int i = 0; i < nthreads; i++ )
  {
    pthread_t bla;
    pta[i] = bla;
    pthread_create(&pta[i],NULL,threadFunc,NULL);
  }
  pthread_join(pta[0],NULL);
  return 0;
}

int main(void)
{

    /* Our process ID and Session ID */
    pid_t pid, sid;

    /* Fork off the parent process */
    pid = fork();
    if (pid < 0) {
    exit(EXIT_FAILURE);
    }
    /* If we got a good PID, then
    we can exit the parent process. */
    if (pid > 0) { // Child can continue to run even after the parent has finished executing
    exit(EXIT_SUCCESS);
    }

    /* Change the file mode mask */
    umask(0);

    /* Create a new SID for the child process */
    sid = setsid();
    if (sid < 0) {
    /* Log the failure */
    exit(EXIT_FAILURE);
    }

    /* Change the current working directory */
    if ((chdir("/")) < 0) {
    /* Log the failure */
    exit(EXIT_FAILURE);
    }

    startThreads(NTHREADS);

    exit(EXIT_SUCCESS);
}