86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO 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 SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//paragraph [1] Title: [{\Large \bf \begin {center}] [\end {center}}]
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//[TOC] [\tableofcontents]
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[1] Header File of the class ~PregelAlgebra~
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November 2018, J. Mende
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[TOC]
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1 Overview
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This header file defines the class DoubleQueue
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2 Defines and includes
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*/
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#ifndef SECONDO_SWITCHABLEBUFFER_H
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#define SECONDO_SWITCHABLEBUFFER_H
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#include <ostream>
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#include <queue>
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#include <functional>
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#include "MessageWrapper.h"
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#include "../typedefs.h"
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#include <boost/thread.hpp>
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namespace pregel {
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using MessageQueue = std::queue<std::shared_ptr<MessageWrapper> >;
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class DoubleQueue {
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public:
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DoubleQueue();
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friend std::ostream &
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operator<<(std::ostream &os, DoubleQueue &buffer);
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MessageQueue &getQueue(const int round);
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unsigned long size(const int round);
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void push(std::shared_ptr<MessageWrapper> message, const int round);
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std::shared_ptr<MessageWrapper> pop(const int round);
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void consume(const consumer2<MessageWrapper> &callback,
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const int round);
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supplier2<MessageWrapper> supply(const int round);
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void bringMessagesToRound(const int round);
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void clear();
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private:
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std::queue< std::shared_ptr<MessageWrapper> > buffers[2];
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boost::mutex lock[2];
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};
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}
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#endif //SECONDO_SWITCHABLEBUFFER_H
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