| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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 ); |
| m_DisposedCallerAdmin = DisposedCallerAdmin::getInstance(); |
| } |
| |
| 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( m_DisposedCallerAdmin->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 ! |
| if( m_lstJob.empty() ) |
| { |
| osl_resetCondition( m_cndWait ); |
| } |
| 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; |
| } |
| |
| |
| } |