/* 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 <stdio.h>

#include <stdlib.h>

#include <time.h>

#include <sys/time.h>

static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

static pthread_mutex_t mut = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;

static pthread_barrier_t bar;

static void

ch (void *arg)

{

  int e = pthread_mutex_lock (&mut;;

  if (e == 0)

    {

      puts ("mutex not locked at all by cond_wait");

      exit (1);

    }

  if (e != EDEADLK)

    {

      puts ("no deadlock error signaled");

      exit (1);

    }

  if (pthread_mutex_unlock (&mut) != 0)

    {

      puts ("ch: cannot unlock mutex");

      exit (1);

    }

  puts ("ch done");

}

static void *

tf1 (void *p)

{

  int err;

  if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0

      || pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0)

    {

      puts ("cannot set cancellation options");

      exit (1);

    }

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    {

      puts ("child: cannot get mutex");

      exit (1);

    }

  err = pthread_barrier_wait (&bar);

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

    {

      printf ("barrier_wait returned %d\n", err);

      exit (1);

    }

  puts ("child: got mutex; waiting");

  pthread_cleanup_push (ch, NULL);

  pthread_cond_wait (&cond, &mut;;

  pthread_cleanup_pop (0);

  puts ("child: cond_wait should not have returned");

  return NULL;

}

static void *

tf2 (void *p)

{

  int err;

  if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0

      || pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0)

    {

      puts ("cannot set cancellation options");

      exit (1);

    }

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    {

      puts ("child: cannot get mutex");

      exit (1);

    }

  err = pthread_barrier_wait (&bar);

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

    {

      printf ("barrier_wait returned %d\n", err);

      exit (1);

    }

  puts ("child: got mutex; waiting");

  pthread_cleanup_push (ch, NULL);

  /* Current time.  */

  struct timeval tv;

  (void) gettimeofday (&tv, NULL);

  /* +1000 seconds in correct format.  */

  struct timespec ts;

  TIMEVAL_TO_TIMESPEC (&tv, &ts);

  ts.tv_sec += 1000;

  pthread_cond_timedwait (&cond, &mut, &ts);

  pthread_cleanup_pop (0);

  puts ("child: cond_wait should not have returned");

  return NULL;

}

static int

do_test (void)

{

  pthread_t th;

  int err;

  printf ("&cond = %p\n&mut = %p\n", &cond, &mut;;

  puts ("parent: get mutex");

  err = pthread_barrier_init (&bar, NULL, 2);

  if (err != 0)

    {

      puts ("parent: cannot init barrier");

      exit (1);

    }

  puts ("parent: create child");

  err = pthread_create (&th, NULL, tf1, NULL);

  if (err != 0)

    {

      puts ("parent: cannot create thread");

      exit (1);

    }

  puts ("parent: wait for child to lock mutex");

  err = pthread_barrier_wait (&bar);

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

    {

      puts ("parent: cannot wait for barrier");

      exit (1);

    }

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    {

      puts ("parent: mutex_lock failed");

      exit (1);

    }

  err = pthread_mutex_unlock (&mut;;

  if (err != 0)

    {

      puts ("parent: mutex_unlock failed");

      exit (1);

    }

  if (pthread_cancel (th) != 0)

    {

      puts ("cannot cancel thread");

      exit (1);

    }

  void *r;

  err = pthread_join (th, &r);

  if (err != 0)

    {

      puts ("parent: failed to join");

      exit (1);

    }

  if (r != PTHREAD_CANCELED)

    {

      puts ("child hasn't been canceled");

      exit (1);

    }

  puts ("parent: create 2nd child");

  err = pthread_create (&th, NULL, tf2, NULL);

  if (err != 0)

    {

      puts ("parent: cannot create thread");

      exit (1);

    }

  puts ("parent: wait for child to lock mutex");

  err = pthread_barrier_wait (&bar);

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

    {

      puts ("parent: cannot wait for barrier");

      exit (1);

    }

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    {

      puts ("parent: mutex_lock failed");

      exit (1);

    }

  err = pthread_mutex_unlock (&mut;;

  if (err != 0)

    {

      puts ("parent: mutex_unlock failed");

      exit (1);

    }

  if (pthread_cancel (th) != 0)

    {

      puts ("cannot cancel thread");

      exit (1);

    }

  err = pthread_join (th, &r);

  if (err != 0)

    {

      puts ("parent: failed to join");

      exit (1);

    }

  if (r != PTHREAD_CANCELED)

    {

      puts ("child hasn't been canceled");

      exit (1);

    }

  puts ("done");

  return 0;

}

#define TEST_FUNCTION do_test ()

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