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[thirdparty/glibc.git] / nptl / pthread_attr_destroy.c

/* Copyright (C) 2002-2021 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
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "pthreadP.h"
#include <shlib-compat.h>

int
__pthread_attr_destroy (pthread_attr_t *attr)
{
  struct pthread_attr *iattr;

  iattr = (struct pthread_attr *) attr;

#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
  /* In old struct pthread_attr, the extension member is missing.  */
  if (__builtin_expect ((iattr->flags & ATTR_FLAG_OLDATTR), 0) == 0)
#endif
    {
      if (iattr->extension != NULL)
        {
          free (iattr->extension->cpuset);
          free (iattr->extension);
        }
    }

  return 0;
}
libc_hidden_def (__pthread_attr_destroy)
weak_alias (__pthread_attr_destroy, pthread_attr_destroy)