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/* A small multi-threaded test case.

   Copyright 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <pthread.h>

#include <stdio.h>

#include <time.h>

void

cond_wait (pthread_cond_t *cond, pthread_mutex_t *mut)

{

  pthread_mutex_lock(mut);

  pthread_cond_wait (cond, mut);

  pthread_mutex_unlock (mut);

}

void

noreturn (void)

{

  pthread_mutex_t mut;

  pthread_cond_t cond;

  pthread_mutex_init (&mut, NULL);

  pthread_cond_init (&cond, NULL);

  /* Wait for a condition that will never be signaled, so we effectively

     block the thread here.  */

  cond_wait (&cond, &mut);

}

void *

forever_pthread (void *unused)

{

  noreturn ();

}

void

break_me (void)

{

  /* Just an anchor to help putting a breakpoint.  */

}

int

main (void)

{

  pthread_t forever;

  const struct timespec ts = { 0, 10000000 }; /* 0.01 sec */

  pthread_create (&forever, NULL, forever_pthread, NULL);

  for (;;)

    {

      nanosleep (&ts, NULL);

      break_me();

    }

  return 0;

}