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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: conditn.c,v $
* $Revision: 1.8 $
*
* 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/conditn.h>
#include <osl/diagnose.h>
#include <osl/time.h>
/*
under WIN32, we use the void* oslCondition
as a WIN32 HANDLE (which is also a 32-bit value)
*/
/*****************************************************************************/
/* osl_createCondition */
/*****************************************************************************/
oslCondition SAL_CALL osl_createCondition(void)
{
oslCondition Condition;
Condition= (oslCondition)CreateEvent(0, /* no security */
sal_True, /* manual reset */
sal_False, /* initial state not signaled */
0); /* automatic name */
return Condition;
}
/*****************************************************************************/
/* osl_destroyCondition */
/*****************************************************************************/
void SAL_CALL osl_destroyCondition(oslCondition Condition)
{
if(Condition)
{
OSL_VERIFY(CloseHandle(Condition));
}
}
/*****************************************************************************/
/* osl_setCondition */
/*****************************************************************************/
sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
{
OSL_ASSERT(Condition);
return (sal_Bool)(SetEvent((HANDLE)Condition) != FALSE);
}
/*****************************************************************************/
/* osl_resetCondition */
/*****************************************************************************/
sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
{
OSL_ASSERT(Condition);
return (sal_Bool)(ResetEvent((HANDLE)Condition) != FALSE);
}
/*****************************************************************************/
/* osl_waitCondition */
/*****************************************************************************/
oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition,
const TimeValue* pTimeout)
{
DWORD timeout;
OSL_ASSERT(Condition);
if (pTimeout)
timeout = pTimeout->Seconds * 1000 + pTimeout->Nanosec / 1000000L;
else
timeout = INFINITE;
/* It's necessary to process SendMessage calls to the current thread to give other threads
access to COM objects instatiated in this thread */
while ( 1 )
{
/* Only wake up if a SendMessage call to the threads message loop is detected */
switch( MsgWaitForMultipleObjects( 1, (HANDLE *)(&Condition), FALSE, timeout, QS_SENDMESSAGE ) )
{
case WAIT_OBJECT_0 + 1:
{
MSG msg;
/* We Must not dispatch the message. PM_NOREMOVE leaves the message queue untouched
but dispatches SendMessage calls automatically */
PeekMessage( &msg, NULL, 0, 0, PM_NOREMOVE );
}
break;
case WAIT_OBJECT_0:
return (osl_cond_result_ok);
case WAIT_TIMEOUT:
return (osl_cond_result_timeout);
default:
return (osl_cond_result_error);
}
}
}
/*****************************************************************************/
/* osl_checkCondition */
/*****************************************************************************/
sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
{
OSL_ASSERT(Condition);
return (sal_Bool)(WaitForSingleObject((HANDLE)Condition, 0) == WAIT_OBJECT_0);
}
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