nptl/pthread_getattr_default_np.c

   1 /* Get the default attributes used by pthread_create in the process.
   2    Copyright (C) 2013-2017 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <stdlib.h>
  21 #include <pthreadP.h>
  22 #include <assert.h>
  23
  24 int
  25 pthread_getattr_default_np (pthread_attr_t *out)
  26 {
  27   struct pthread_attr *real_out;
  28
  29   assert (sizeof (*out) >= sizeof (struct pthread_attr));
  30   real_out = (struct pthread_attr *) out;
  31
  32   lll_lock (__default_pthread_attr_lock, LLL_PRIVATE);
  33   *real_out = __default_pthread_attr;
  34   lll_unlock (__default_pthread_attr_lock, LLL_PRIVATE);
  35
  36   return 0;
  37 }