nptl/pthread_mutexattr_getpshared.c

   1 /* Copyright (C) 2002-2018 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <pthreadP.h>
  20
  21
  22 int
  23 pthread_mutexattr_getpshared (const pthread_mutexattr_t *attr, int *pshared)
  24 {
  25   const struct pthread_mutexattr *iattr;
  26
  27   iattr = (const struct pthread_mutexattr *) attr;
  28
  29   *pshared = ((iattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_PSHARED) != 0
  30               ? PTHREAD_PROCESS_SHARED : PTHREAD_PROCESS_PRIVATE);
  31
  32   return 0;
  33 }