text: /*
   * pthread_barrier_attr_getpshared.c
   *
   * Description:
   * This translation unit implements barrier primitives.
   *
   * --------------------------------------------------------------------------
   *
   *      Pthreads-win32 - POSIX Threads Library for Win32
   *      Copyright(C) 1998 John E. Bossom
   *      Copyright(C) 1999,2005 Pthreads-win32 contributors
   * 
   *      Contact Email: rpj@callisto.canberra.edu.au
   * 
   *      The current list of contributors is contained
   *      in the file CONTRIBUTORS included with the source
   *      code distribution. The list can also be seen at the
   *      following World Wide Web location:
   *      http://sources.redhat.com/pthreads-win32/contributors.html
   * 
   *      This library is free software; you can redistribute it and/or
   *      modify it under the terms of the GNU Lesser General Public
   *      License as published by the Free Software Foundation; either
   *      version 2 of the License, or (at your option) any later version.
   * 
   *      This library is distributed in the hope that it will be useful,
   *      but WITHOUT ANY WARRANTY; without even the implied warranty of
   *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   *      Lesser General Public License for more details.
   * 
   *      You should have received a copy of the GNU Lesser General Public
   *      License along with this library in the file COPYING.LIB;
   *      if not, write to the Free Software Foundation, Inc.,
   *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
   */
  
  #include "pthread.h"
  #include "implement.h"
  
  
  int
  pthread_barrierattr_getpshared (const pthread_barrierattr_t * attr,
  				int *pshared)
       /*
        * ------------------------------------------------------
        * DOCPUBLIC
        *      Determine whether barriers created with 'attr' can be
        *      shared between processes.
        *
        * PARAMETERS
        *      attr
        *              pointer to an instance of pthread_barrierattr_t
        *
        *      pshared
        *              will be set to one of:
        *
        *                      PTHREAD_PROCESS_SHARED
        *                              May be shared if in shared memory
        *
        *                      PTHREAD_PROCESS_PRIVATE
        *                              Cannot be shared.
        *
        *
        * DESCRIPTION
        *      Mutexes creatd with 'attr' can be shared between
        *      processes if pthread_barrier_t variable is allocated
        *      in memory shared by these processes.
        *      NOTES:
        *              1)      pshared barriers MUST be allocated in shared
        *                      memory.
        *              2)      The following macro is defined if shared barriers
        *                      are supported:
        *                              _POSIX_THREAD_PROCESS_SHARED
        *
        * RESULTS
        *              0               successfully retrieved attribute,
        *              EINVAL          'attr' is invalid,
        *
        * ------------------------------------------------------
        */
  {
    int result;
  
    if ((attr != NULL && *attr != NULL) && (pshared != NULL))
      {
        *pshared = (*attr)->pshared;
        result = 0;
      }
    else
      {
        result = EINVAL;
      }
  
    return (result);
  }				/* pthread_barrierattr_getpshared */
  