/*
  * pthread_condattr_getpshared.c
  *
  * Description:
  * This translation unit implements condition variables and their 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_condattr_getpshared (const pthread_condattr_t * attr, int *pshared)
      /*
       * ------------------------------------------------------
       * DOCPUBLIC
       *      Determine whether condition variables created with 'attr'
       *      can be shared between processes.
       *
       * PARAMETERS
       *      attr
       *              pointer to an instance of pthread_condattr_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
       *      Condition Variables created with 'attr' can be shared
       *      between processes if pthread_cond_t variable is allocated
       *      in memory shared by these processes.
       *      NOTES:
       *      1)      pshared condition variables MUST be allocated in
       *              shared memory.
       *
       *      2)      The following macro is defined if shared mutexes
       *              are supported:
       *                      _POSIX_THREAD_PROCESS_SHARED
       *
       * RESULTS
       *              0               successfully retrieved attribute,
       *              EINVAL          'attr' or 'pshared' is invalid,
       *
       * ------------------------------------------------------
       */
 {
   int result;
 
   if ((attr != NULL && *attr != NULL) && (pshared != NULL))
     {
       *pshared = (*attr)->pshared;
       result = 0;
     }
   else
     {
       result = EINVAL;
     }
 
   return result;
 
 }				/* pthread_condattr_getpshared */