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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#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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