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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "system.h"
#include <osl/diagnose.h>
#include <osl/semaphor.h>
/*
Implemetation notes:
The void* represented by oslSemaphore is used
to store a WIN32 HANDLE.
*/
/*****************************************************************************/
/* osl_createSemaphore */
/*****************************************************************************/
oslSemaphore SAL_CALL osl_createSemaphore(sal_uInt32 initialCount)
{
oslSemaphore Semaphore;
Semaphore= CreateSemaphore(0, initialCount, INT_MAX, 0);
/* create failed? */
if((HANDLE)Semaphore == INVALID_HANDLE_VALUE)
{
Semaphore= 0;
}
return Semaphore;
}
/*****************************************************************************/
/* osl_destroySemaphore */
/*****************************************************************************/
void SAL_CALL osl_destroySemaphore(oslSemaphore Semaphore)
{
if(Semaphore != 0)
{
CloseHandle((HANDLE)Semaphore);
}
}
/*****************************************************************************/
/* osl_acquireSemaphore */
/*****************************************************************************/
sal_Bool SAL_CALL osl_acquireSemaphore(oslSemaphore Semaphore)
{
OSL_ASSERT(Semaphore != 0);
switch ( WaitForSingleObject( (HANDLE)Semaphore, INFINITE ) )
{
case WAIT_OBJECT_0:
return sal_True;
default:
return (sal_False);
}
}
/*****************************************************************************/
/* osl_tryToAcquireSemaphore */
/*****************************************************************************/
sal_Bool SAL_CALL osl_tryToAcquireSemaphore(oslSemaphore Semaphore)
{
OSL_ASSERT(Semaphore != 0);
return (sal_Bool)(WaitForSingleObject((HANDLE)Semaphore, 0) == WAIT_OBJECT_0);
}
/*****************************************************************************/
/* osl_releaseSemaphore */
/*****************************************************************************/
sal_Bool SAL_CALL osl_releaseSemaphore(oslSemaphore Semaphore)
{
OSL_ASSERT(Semaphore != 0);
/* increase count by one, not interested in previous count */
return (sal_Bool)(ReleaseSemaphore((HANDLE)Semaphore, 1, NULL) != FALSE);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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