/* Copyright (C) 2004-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.

   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>

static pthread_barrier_t b;

static pthread_rwlock_t r = PTHREAD_RWLOCK_INITIALIZER;

static void *

tf (void *arg)

{

  /* Lock the read-write lock.  */

  if (pthread_rwlock_wrlock (&r) != 0)

    {

      puts ("tf: cannot lock rwlock");

      exit (EXIT_FAILURE);

    }

  pthread_t mt = *(pthread_t *) arg;

  pthread_barrier_wait (&b);

  /* This call will never return.  */

  pthread_join (mt, NULL);

  return NULL;

}

static int

do_test (void)

{

  int result = 0;

  struct timespec ts;

  if (clock_gettime (CLOCK_REALTIME, &ts) != 0)

    {

      puts ("clock_gettime failed");

      return 1;

    }

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

    {

      puts ("barrier_init failed");

      return 1;

    }

  pthread_t me = pthread_self ();

  pthread_t th;

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

    {

      puts ("create failed");

      return 1;

    }

  /* Wait until the rwlock is locked.  */

  pthread_barrier_wait (&b);

  ts.tv_nsec = -1;

  int e = pthread_rwlock_timedrdlock (&r, &ts);

  if (e == 0)

    {

      puts ("first rwlock_timedrdlock did not fail");

      result = 1;

    }

  else if (e != EINVAL)

    {

      puts ("first rwlock_timedrdlock did not return EINVAL");

      result = 1;

    }

  e = pthread_rwlock_timedwrlock (&r, &ts);

  if (e == 0)

    {

      puts ("first rwlock_timedwrlock did not fail");

      result = 1;

    }

  else if (e != EINVAL)

    {

      puts ("first rwlock_timedwrlock did not return EINVAL");

      result = 1;

    }

  ts.tv_nsec = 1000000000;

  e = pthread_rwlock_timedrdlock (&r, &ts);

  if (e == 0)

    {

      puts ("second rwlock_timedrdlock did not fail");

      result = 1;

    }

  else if (e != EINVAL)

    {

      puts ("second rwlock_timedrdlock did not return EINVAL");

      result = 1;

    }

  e = pthread_rwlock_timedwrlock (&r, &ts);

  if (e == 0)

    {

      puts ("second rwlock_timedwrlock did not fail");

      result = 1;

    }

  else if (e != EINVAL)

    {

      puts ("second rwlock_timedwrlock did not return EINVAL");

      result = 1;

    }

  ts.tv_nsec = (__typeof (ts.tv_nsec)) 0x100001000LL;

  if ((__typeof (ts.tv_nsec)) 0x100001000LL != 0x100001000LL)

    ts.tv_nsec = 2000000000;

  e = pthread_rwlock_timedrdlock (&r, &ts);

  if (e == 0)

    {

      puts ("third rwlock_timedrdlock did not fail");

      result = 1;

    }

  else if (e != EINVAL)

    {

      puts ("third rwlock_timedrdlock did not return EINVAL");

      result = 1;

    }

  e = pthread_rwlock_timedwrlock (&r, &ts);

  if (e == 0)

    {

      puts ("third rwlock_timedwrlock did not fail");

      result = 1;

    }

  else if (e != EINVAL)

    {

      puts ("third rwlock_timedwrlock did not return EINVAL");

      result = 1;

    }

  if (result == 0)

    puts ("no bugs");

  return result;

}

#define TEST_FUNCTION do_test ()

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