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/* Compiler options:

/* Compiler options:

#cc: additional_flags=-pthread

#cc: additional_flags=-pthread

#notarget: cris*-*-elf

#notarget: cris*-*-elf

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

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

#include <stddef.h>

#include <stddef.h>

#include <stdio.h>

#include <stdio.h>

#include <unistd.h>

#include <unistd.h>

#include <pthread.h>

#include <pthread.h>

#include <stdlib.h>

#include <stdlib.h>

static void *

static void *

process (void *arg)

process (void *arg)

{

{

  int i;

  int i;

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

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

    {

    {

      if (sched_yield () != 0)

      if (sched_yield () != 0)

        abort ();

        abort ();

    }

    }

  return NULL;

  return NULL;

}

}

int

int

main (void)

main (void)

{

{

  int retcode;

  int retcode;

  pthread_t th_a, th_b;

  pthread_t th_a, th_b;

  void *retval;

  void *retval;

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

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

  if (retcode != 0)

  if (retcode != 0)

    abort ();

    abort ();

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

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

  if (retcode != 0)

  if (retcode != 0)

    abort ();

    abort ();

  retcode = pthread_join (th_a, &retval);

  retcode = pthread_join (th_a, &retval);

  if (retcode != 0)

  if (retcode != 0)

    abort ();

    abort ();

  retcode = pthread_join (th_b, &retval);

  retcode = pthread_join (th_b, &retval);

  if (retcode != 0)

  if (retcode != 0)

    abort ();

    abort ();

  printf ("pass\n");

  printf ("pass\n");

  return 0;

  return 0;

}

}