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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 <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "osl/module.hxx"
#include "tools/solarmutex.hxx"
#include "generic/geninst.h"
// SalYieldMutex
SalYieldMutex::SalYieldMutex()
{
mnCount = 0;
mnThreadId = 0;
::tools::SolarMutex::SetSolarMutex( this );
}
SalYieldMutex::~SalYieldMutex()
{
::tools::SolarMutex::SetSolarMutex( NULL );
}
void SalYieldMutex::acquire()
{
m_mutex.acquire();
mnThreadId = osl::Thread::getCurrentIdentifier();
mnCount++;
}
void SalYieldMutex::release()
{
OSL_ENSURE(mnCount > 0, "SalYieldMutex::release() called with zero count");
if ( mnThreadId == osl::Thread::getCurrentIdentifier() )
{
if ( mnCount == 1 )
mnThreadId = 0;
mnCount--;
}
m_mutex.release();
}
bool SalYieldMutex::tryToAcquire()
{
if ( m_mutex.tryToAcquire() )
{
mnThreadId = osl::Thread::getCurrentIdentifier();
mnCount++;
return true;
}
else
return false;
}
comphelper::SolarMutex* SalGenericInstance::GetYieldMutex()
{
return mpSalYieldMutex;
}
sal_uLong SalGenericInstance::ReleaseYieldMutex()
{
SalYieldMutex* pYieldMutex = mpSalYieldMutex;
if ( pYieldMutex->GetThreadId() ==
osl::Thread::getCurrentIdentifier() )
{
sal_uLong nCount = pYieldMutex->GetAcquireCount();
sal_uLong n = nCount;
while ( n )
{
pYieldMutex->release();
n--;
}
return nCount;
}
else
return 0;
}
void SalGenericInstance::AcquireYieldMutex( sal_uLong nCount )
{
SalYieldMutex* pYieldMutex = mpSalYieldMutex;
while ( nCount )
{
pYieldMutex->acquire();
nCount--;
}
}
bool SalGenericInstance::CheckYieldMutex()
{
bool bRet = true;
SalYieldMutex* pYieldMutex = mpSalYieldMutex;
if ( pYieldMutex->GetThreadId() != osl::Thread::getCurrentIdentifier() )
{
SAL_WARN_IF( pYieldMutex->GetThreadId() != osl::Thread::getCurrentIdentifier(), "vcl", "CheckYieldMutex: " << pYieldMutex->GetThreadId() << "!=" << osl::Thread::getCurrentIdentifier() );
bRet = false;
}
return bRet;
}
SalGenericInstance::~SalGenericInstance()
{
::tools::SolarMutex::SetSolarMutex( 0 );
delete mpSalYieldMutex;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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