nptl/pthread_attr_extension.c

   1 /* Allocate the extension space for struct pthread_attr.
   2    Copyright (C) 2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 <pthreadP.h>
  21 #include <stdlib.h>
  22
  23 int
  24  __pthread_attr_extension (struct pthread_attr *attr)
  25 {
  26   if (attr->extension != NULL)
  27     return 0;
  28   attr->extension = calloc (sizeof (*attr->extension), 1);
  29   if (attr->extension == NULL)
  30     return errno;
  31   return 0;
  32 }