/* file: basic.c
   author:  Ted Baker
   version: $Revision$
   last modified by: $Author: cop4610 $ on $Date: 2002/09/20 10:13:25 $
   purpose: 

   Demonstrate what happens to other threads when the main thread exits.

 */

#define _XOPEN_SOURCE 500
#define _POSIX_C_SOURCE 199506
#define _REENTRANT
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define PCHECK(CALL){int result;\
 if ((result = (CALL)) != 0) {\
    fprintf (stderr, "FATAL: %s (%s)", strerror(result), #CALL);\
    exit (-1);}}

#define NTHREADS 10

void *
my_thread_body (void * arg) {
  int id = (int) arg;
  int i;
  /*
  struct timespec mytime;
  mytime.tv_nsec = 1000;
  mytime.tv_sec = 0;
  if (nanosleep (&mytime, NULL)) {
    perror ("basic_nojoin"); exit (-1);
  }
  */
  for (i = 0; i < 10000000; i++) /* do nothing */;  
  fprintf (stderr, "This is thread %d\n", id);
  return NULL;
}

int
main (int argc, char **argv) {

  pthread_t thread_id[NTHREADS];
  int i;

  PCHECK (pthread_setconcurrency (2));

  for (i = 1; i < NTHREADS; i++) {
    PCHECK (pthread_create (
      &thread_id[i],   /* place to store the id of new thread */
      NULL,            /* use default thread creation attributes */
      my_thread_body,  /* function for thread to execute */
      (void *) i));    /* pass index of thread */
  }

  exit (0);
}