mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/***********************************************************************
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* $Id: dmlresultbuffer.h 927 2013-01-21 14:11:25Z rdempsey $
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*
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*
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***********************************************************************/
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/** @file */
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#ifndef DMLRESULTBUFFER_H
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#define DMLRESULTBUFFER_H
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#include <deque>
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#include <boost/thread/thread.hpp>
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#include <boost/thread/mutex.hpp>
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#include "dmlpackageprocessor.h"
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namespace dmlprocessor
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{
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/** @brief holds dml results
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*/
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class DMLResultBuffer
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{
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public:
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typedef boost::mutex::scoped_lock scoped_lock;
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/** @brief the type of a <DMLResult, sessionID> pair
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*
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*/
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struct ResultPair
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{
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dmlpackageprocessor::DMLPackageProcessor::DMLResult result;
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int sessionID;
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};
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/** @brief ctor
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*/
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DMLResultBuffer();
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/** @brief ctor
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*
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*/
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DMLResultBuffer(int bufferSize);
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/** @brief dtor
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*
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*/
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~DMLResultBuffer();
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/** @brief set the size of the buffer
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*
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* @param bufferSize the size of the buffer
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*/
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inline void setBufferSize(int bufferSize) {fBufferSize=bufferSize;}
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/** @brief put results in the buffer
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*
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*/
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void put( dmlpackageprocessor::DMLPackageProcessor::DMLResult result, int sessionID );
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/** @brief get results from the buffer
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*
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*/
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ResultPair get();
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private:
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boost::mutex fMutex;
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boost::condition fCond;
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typedef std::deque<ResultPair> ResultBuffer;
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ResultBuffer fResultBuffer;
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int fBufferSize;
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int fFull;
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};
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} //namespace dmlprocessor
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#endif //DMLRESULTPROCESSOR_H
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