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Viewing changes to win32/3rdparty/pthreads/pthread_condattr_getpshared.c

  • Committer: Bazaar Package Importer
  • Author(s): Scott Kitterman
  • Date: 2011-02-19 09:51:33 UTC
  • mfrom: (0.35.19 sid)
  • Revision ID: james.westby@ubuntu.com-20110219095133-sde2dyj8a6bjbkdh
Tags: 0.97+dfsg-0ubuntu1
* Merge from debian unstable (0ubuntu1 because the Debian upload was
  inadvertently left marked UNRELEASED).  Remaining changes:
  - Drop initial signature definitions from clamav-base
  - Drop build-dep on electric-fence (in Universe)
  - Add apparmor profiles for clamd and freshclam along with maintainer
    script changes

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win32/3rdparty/pthreads/pthread_condattr_getpshared.c
 
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/*
 
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 * pthread_condattr_getpshared.c
 
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 *
 
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 * Description:
 
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 * This translation unit implements condition variables and their primitives.
 
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 *
 
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 *
 
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 * --------------------------------------------------------------------------
 
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 *
 
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 *      Pthreads-win32 - POSIX Threads Library for Win32
 
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 *      Copyright(C) 1998 John E. Bossom
 
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 *      Copyright(C) 1999,2005 Pthreads-win32 contributors
 
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 * 
 
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 *      Contact Email: rpj@callisto.canberra.edu.au
 
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 * 
 
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 *      The current list of contributors is contained
 
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 *      in the file CONTRIBUTORS included with the source
 
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 *      code distribution. The list can also be seen at the
 
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 *      following World Wide Web location:
 
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 *      http://sources.redhat.com/pthreads-win32/contributors.html
 
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 * 
 
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 *      This library is free software; you can redistribute it and/or
 
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 *      modify it under the terms of the GNU Lesser General Public
 
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 *      License as published by the Free Software Foundation; either
 
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 *      version 2 of the License, or (at your option) any later version.
 
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 * 
 
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 *      This library is distributed in the hope that it will be useful,
 
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 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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 *      Lesser General Public License for more details.
 
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 * 
 
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 *      You should have received a copy of the GNU Lesser General Public
 
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 *      License along with this library in the file COPYING.LIB;
 
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 *      if not, write to the Free Software Foundation, Inc.,
 
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 *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 
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 */
 
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#include "pthread.h"
 
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#include "implement.h"
 
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int
 
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pthread_condattr_getpshared (const pthread_condattr_t * attr, int *pshared)
 
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     /*
 
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      * ------------------------------------------------------
 
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      * DOCPUBLIC
 
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      *      Determine whether condition variables created with 'attr'
 
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      *      can be shared between processes.
 
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      *
 
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      * PARAMETERS
 
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      *      attr
 
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      *              pointer to an instance of pthread_condattr_t
 
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      *
 
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      *      pshared
 
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      *              will be set to one of:
 
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      *
 
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      *                      PTHREAD_PROCESS_SHARED
 
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      *                              May be shared if in shared memory
 
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      *
 
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      *                      PTHREAD_PROCESS_PRIVATE
 
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      *                              Cannot be shared.
 
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      *
 
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      *
 
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      * DESCRIPTION
 
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      *      Condition Variables created with 'attr' can be shared
 
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      *      between processes if pthread_cond_t variable is allocated
 
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      *      in memory shared by these processes.
 
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      *      NOTES:
 
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      *      1)      pshared condition variables MUST be allocated in
 
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      *              shared memory.
 
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      *
 
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      *      2)      The following macro is defined if shared mutexes
 
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      *              are supported:
 
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      *                      _POSIX_THREAD_PROCESS_SHARED
 
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      *
 
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      * RESULTS
 
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      *              0               successfully retrieved attribute,
 
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      *              EINVAL          'attr' or 'pshared' is invalid,
 
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      *
 
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      * ------------------------------------------------------
 
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      */
 
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{
 
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  int result;
 
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  if ((attr != NULL && *attr != NULL) && (pshared != NULL))
 
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    {
 
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      *pshared = (*attr)->pshared;
 
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      result = 0;
 
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    }
 
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  else
 
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    {
 
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      result = EINVAL;
 
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    }
 
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  return result;
 
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}                               /* pthread_condattr_getpshared */