nptl/pthread_mutex_destroy.c


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/* Copyright (C) 2002-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   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 "pthreadP.h"

#include <stap-probe.h>


int
__pthread_mutex_destroy (pthread_mutex_t *mutex)
{
  LIBC_PROBE (mutex_destroy, 1, mutex);

  if ((mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP) == 0
      && mutex->__data.__nusers != 0)
    return EBUSY;

  /* Set to an invalid value.  */
  mutex->__data.__kind = -1;

  return 0;
}
weak_alias (__pthread_mutex_destroy, pthread_mutex_destroy)
hidden_def (__pthread_mutex_destroy)