/* Helper program for testing the pthread_rwlock_t and pthread_rwlockattr_t

   pretty printers.

   Copyright (C) 2016-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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/>.  */

/* Keep the calls to the pthread_* functions on separate lines to make it easy

   to advance through the program using the gdb 'next' command.  */

#include <pthread.h>

#define PASS 0

#define FAIL 1

/* Need these so we don't have lines longer than 79 chars.  */

#define SET_KIND(attr, kind) pthread_rwlockattr_setkind_np (attr, kind)

#define SET_SHARED(attr, shared) pthread_rwlockattr_setpshared (attr, shared)

static int rwlock_reinit (pthread_rwlock_t *rwlock,

			  const pthread_rwlockattr_t *attr);

static int test_setkind_np (pthread_rwlock_t *rwlock,

			    pthread_rwlockattr_t *attr);

static int test_setpshared (pthread_rwlock_t *rwlock,

			    pthread_rwlockattr_t *attr);

int

main (void)

{

  pthread_rwlock_t rwlock;

  pthread_rwlockattr_t attr;

  int result = FAIL;

  if (pthread_rwlockattr_init (&attr) == 0

      && pthread_rwlock_init (&rwlock, NULL) == 0

      && test_setkind_np (&rwlock, &attr) == PASS

      && test_setpshared (&rwlock, &attr) == PASS)

    result = PASS;

  /* Else, one of the pthread_rwlock* functions failed.  */

  return result;

}

/* Destroys RWLOCK and re-initializes it using ATTR.  */

static int

rwlock_reinit (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr)

{

  int result = FAIL;

  if (pthread_rwlock_destroy (rwlock) == 0

      && pthread_rwlock_init (rwlock, attr) == 0)

    result = PASS;

  return result;

}

/* Tests setting whether the rwlock prefers readers or writers.  */

static int

test_setkind_np (pthread_rwlock_t *rwlock, pthread_rwlockattr_t *attr)

{

  int result = FAIL;

  if (SET_KIND (attr, PTHREAD_RWLOCK_PREFER_READER_NP) == 0 /* Set kind.  */

      && rwlock_reinit (rwlock, attr) == PASS

      && SET_KIND (attr, PTHREAD_RWLOCK_PREFER_WRITER_NP) == 0

      && rwlock_reinit (rwlock, attr) == PASS

      && SET_KIND (attr, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP) == 0

      && rwlock_reinit (rwlock, attr) == PASS)

    result = PASS;

  return result;

}

/* Tests setting whether the rwlock can be shared between processes.  */

static int

test_setpshared (pthread_rwlock_t *rwlock, pthread_rwlockattr_t *attr)

{

  int result = FAIL;

  if (SET_SHARED (attr, PTHREAD_PROCESS_SHARED) == 0 /* Set shared.  */

      && rwlock_reinit (rwlock, attr) == PASS

      && SET_SHARED (attr, PTHREAD_PROCESS_PRIVATE) == 0

      && rwlock_reinit (rwlock, attr) == PASS)

    result = PASS;

  return result;

}