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/*************************************************************************
*
* 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.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_cppu.hxx"
#include "jobqueue.hxx"
#include "threadpool.hxx"
#include <osl/diagnose.h>
using namespace ::osl;
namespace cppu_threadpool {
JobQueue::JobQueue() :
m_nToDo( 0 ),
m_bSuspended( sal_False ),
m_cndWait( osl_createCondition() )
{
osl_resetCondition( m_cndWait );
}
JobQueue::~JobQueue()
{
osl_destroyCondition( m_cndWait );
}
void JobQueue::add( void *pThreadSpecificData, RequestFun * doRequest )
{
MutexGuard guard( m_mutex );
Job job = { pThreadSpecificData , doRequest };
m_lstJob.push_back( job );
if( ! m_bSuspended )
{
osl_setCondition( m_cndWait );
}
m_nToDo ++;
}
void *JobQueue::enter( sal_Int64 nDisposeId , sal_Bool bReturnWhenNoJob )
{
void *pReturn = 0;
{
// synchronize with the dispose calls
MutexGuard guard( m_mutex );
if( DisposedCallerAdmin::getInstance()->isDisposed( nDisposeId ) )
{
return 0;
}
m_lstCallstack.push_front( nDisposeId );
}
while( sal_True )
{
if( bReturnWhenNoJob )
{
MutexGuard guard( m_mutex );
if( m_lstJob.empty() )
{
break;
}
}
osl_waitCondition( m_cndWait , 0 );
struct Job job={0,0};
{
// synchronize with add and dispose calls
MutexGuard guard( m_mutex );
if( 0 == m_lstCallstack.front() )
{
// disposed !
break;
}
OSL_ASSERT( ! m_lstJob.empty() );
if( ! m_lstJob.empty() )
{
job = m_lstJob.front();
m_lstJob.pop_front();
}
if( m_lstJob.empty() )
{
osl_resetCondition( m_cndWait );
}
}
if( job.doRequest )
{
job.doRequest( job.pThreadSpecificData );
m_nToDo --;
}
else
{
m_nToDo --;
pReturn = job.pThreadSpecificData;
break;
}
}
{
// synchronize with the dispose calls
MutexGuard guard( m_mutex );
m_lstCallstack.pop_front();
}
return pReturn;
}
void JobQueue::dispose( sal_Int64 nDisposeId )
{
MutexGuard guard( m_mutex );
for( CallStackList::iterator ii = m_lstCallstack.begin() ;
ii != m_lstCallstack.end() ;
++ii )
{
if( (*ii) == nDisposeId )
{
(*ii) = 0;
}
}
if( !m_lstCallstack.empty() && ! m_lstCallstack.front() )
{
// The thread is waiting for a disposed pCallerId, let it go
osl_setCondition( m_cndWait );
}
}
void JobQueue::suspend()
{
MutexGuard guard( m_mutex );
m_bSuspended = sal_True;
}
void JobQueue::resume()
{
MutexGuard guard( m_mutex );
m_bSuspended = sal_False;
if( ! m_lstJob.empty() )
{
osl_setCondition( m_cndWait );
}
}
sal_Bool JobQueue::isEmpty()
{
MutexGuard guard( m_mutex );
return m_lstJob.empty();
}
sal_Bool JobQueue::isCallstackEmpty()
{
MutexGuard guard( m_mutex );
return m_lstCallstack.empty();
}
sal_Bool JobQueue::isBusy()
{
return m_nToDo > 0;
}
}
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