nptl/pthread_attr_destroy.c

   1 /* Copyright (C) 2002-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <string.h>
  20 #include <unistd.h>
  21 #include "pthreadP.h"
  22 #include <shlib-compat.h>
  23
  24 int
  25 __pthread_attr_destroy (pthread_attr_t *attr)
  26 {
  27   struct pthread_attr *iattr;
  28
  29   iattr = (struct pthread_attr *) attr;
  30
  31 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
  32   /* In old struct pthread_attr, the extension member is missing.  */
  33   if (__builtin_expect ((iattr->flags & ATTR_FLAG_OLDATTR), 0) == 0)
  34 #endif
  35     {
  36       if (iattr->extension != NULL)
  37         {
  38           free (iattr->extension->cpuset);
  39           free (iattr->extension);
  40         }
  41     }
  42
  43   return 0;
  44 }
  45 libc_hidden_def (__pthread_attr_destroy)
  46 weak_alias (__pthread_attr_destroy, pthread_attr_destroy)