/**************************************************************************\
 *
 *  This file is part of the Coin 3D visualization library.
 *  Copyright (C) 1998-2007 by Systems in Motion.  All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  ("GPL") version 2 as published by the Free Software Foundation.
 *  See the file LICENSE.GPL at the root directory of this source
 *  distribution for additional information about the GNU GPL.
 *
 *  For using Coin with software that can not be combined with the GNU
 *  GPL, and for taking advantage of the additional benefits of our
 *  support services, please contact Systems in Motion about acquiring
 *  a Coin Professional Edition License.
 *
 *  See http://www.coin3d.org/ for more information.
 *
 *  Systems in Motion, Postboks 1283, Pirsenteret, 7462 Trondheim, NORWAY.
 *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
 *
\**************************************************************************/

/* this file should only be included from mutex.c */

static int
win32_cs_struct_init(cc_mutex * mutex)
{
  InitializeCriticalSection(&mutex->w32thread.critical_section);
  return CC_OK;
}

static int
win32_cs_struct_clean(cc_mutex * mutex)
{
  DeleteCriticalSection(&mutex->w32thread.critical_section);
  /* this function does not have a return value, always return OK */
  return CC_OK;
}

static int
win32_cs_lock(cc_mutex * mutex)
{
  EnterCriticalSection(&mutex->w32thread.critical_section);
  return CC_OK;
}

static int
win32_cs_try_lock(cc_mutex * mutex)
{
  BOOL status;
  status = cc_mutex_TryEnterCriticalSection(&mutex->w32thread.critical_section);
  return status == TRUE ? CC_OK : CC_BUSY;
}

static int
win32_cs_unlock(cc_mutex * mutex)
{
  LeaveCriticalSection(&(mutex->w32thread.critical_section));
  return CC_OK;
}