/* Test sem_timedwait cancellation for contended case.

   Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

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

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <pthread.h>

#include <semaphore.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <sys/time.h>

static pthread_barrier_t bar;

static sem_t sem;

static void

cleanup (void *arg)

{

  static int ncall;

  if (++ncall != 1)

    {

      puts ("second call to cleanup");

      exit (1);

    }

}

static void *

tf (void *arg)

{

  int e;

  pthread_cleanup_push (cleanup, NULL);

  e = pthread_barrier_wait (&bar);

  if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("error: tf: 1st barrier_wait failed");

      exit (1);

    }

  struct timeval tv;

  (void) gettimeofday (&tv, NULL);

  struct timespec ts;

  TIMEVAL_TO_TIMESPEC (&tv, &ts);

  /* Timeout in 5 seconds.  */

  ts.tv_sec += 5;

  /* This call should block and be cancelable.  */

  errno = 0;

  e = sem_timedwait (&sem, &ts);

  pthread_cleanup_pop (0);

  return NULL;

}

static int

do_test (void)

{

  pthread_t th;

  if (pthread_barrier_init (&bar, NULL, 2) != 0)

    {

      puts ("error: barrier_init failed");

      exit (1);

    }

  if (sem_init (&sem, 0, 0) != 0)

    {

      puts ("error: sem_init failed");

      exit (1);

    }

  if (pthread_create (&th, NULL, tf, NULL) != 0)

    {

      puts ("error: create failed");

      exit (1);

    }

  int e = pthread_barrier_wait (&bar);

  if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("error: 1st barrier_wait failed");

      exit (1);

    }

  /* Give the child a chance to go to sleep in sem_wait.  */

  sleep (1);

  /* Check whether cancellation is honored when waiting in sem_timedwait.  */

  if (pthread_cancel (th) != 0)

    {

      puts ("error: 1st cancel failed");

      exit (1);

    }

  void *r;

  if (pthread_join (th, &r) != 0)

    {

      puts ("error: join failed");

      exit (1);

    }

  if (r != PTHREAD_CANCELED)

    {

      puts ("error: thread not canceled");

      exit (1);

    }

  return 0;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"