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/* Compiler options:

#cc: additional_flags=-pthread

#notarget: cris*-*-elf

   To test sched_yield in the presencs of threads.  Core from ex1.c.  */

#include <stddef.h>

#include <stdio.h>

#include <unistd.h>

#include <pthread.h>

#include <stdlib.h>

static void *

process (void *arg)

{

  int i;

  for (i = 0; i < 10; i++)

    {

      if (sched_yield () != 0)

        abort ();

    }

  return NULL;

}

int

main (void)

{

  int retcode;

  pthread_t th_a, th_b;

  void *retval;

  retcode = pthread_create (&th_a, NULL, process, (void *) "a");

  if (retcode != 0)

    abort ();

  retcode = pthread_create (&th_b, NULL, process, (void *) "b");

  if (retcode != 0)

    abort ();

  retcode = pthread_join (th_a, &retval);

  if (retcode != 0)

    abort ();

  retcode = pthread_join (th_b, &retval);

  if (retcode != 0)

    abort ();

  printf ("pass\n");

  return 0;

}