nptl/pthread_attr_destroy.c

   1 /* Copyright (C) 2002-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <string.h>
  21 #include <unistd.h>
  22 #include "pthreadP.h"
  23 #include <shlib-compat.h>
  24
  25 int
  26 __pthread_attr_destroy (pthread_attr_t *attr)
  27 {
  28   struct pthread_attr *iattr;
  29
  30   iattr = (struct pthread_attr *) attr;
  31
  32 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
  33   /* In old struct pthread_attr, the extension member is missing.  */
  34   if (__builtin_expect ((iattr->flags & ATTR_FLAG_OLDATTR), 0) == 0)
  35 #endif
  36     {
  37       if (iattr->extension != NULL)
  38         {
  39           free (iattr->extension->cpuset);
  40           free (iattr->extension);
  41         }
  42     }
  43
  44   return 0;
  45 }
  46 libc_hidden_def (__pthread_attr_destroy)
  47 weak_alias (__pthread_attr_destroy, pthread_attr_destroy)