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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/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)
*/
oslCondition SAL_CALL osl_createCondition(void)
{
oslCondition Condition;
Condition= reinterpret_cast<oslCondition>(CreateEventW(nullptr, /* no security */
true, /* manual reset */
false, /* initial state not signaled */
nullptr)); /* automatic name */
return Condition;
}
void SAL_CALL osl_destroyCondition(oslCondition Condition)
{
if(Condition)
OSL_VERIFY(CloseHandle(Condition));
}
sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
{
OSL_ASSERT(Condition);
return SetEvent(reinterpret_cast<HANDLE>(Condition)) != FALSE;
}
sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
{
OSL_ASSERT(Condition);
return ResetEvent(reinterpret_cast<HANDLE>(Condition)) != FALSE;
}
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 instantiated in this thread */
while ( true )
{
/* Only wake up if a SendMessage call to the threads message loop is detected */
switch( MsgWaitForMultipleObjects( 1, reinterpret_cast<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 */
PeekMessageW( &msg, nullptr, 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;
}
}
}
sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
{
OSL_ASSERT(Condition);
return WaitForSingleObject(reinterpret_cast<HANDLE>(Condition), 0) == WAIT_OBJECT_0;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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