55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/**
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* Circular buffer (double linked, threadsafe)
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*
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* Used to store recent readings and buffer in case of net inconnectivity
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*
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* @author Steffen Vogel <info@steffenvogel.de>
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* @copyright Copyright (c) 2011, The volkszaehler.org project
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* @package vzlogger
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org 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 3 of the License, or
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* any later version.
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*
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* volkzaehler.org 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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*
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* You should have received a copy of the GNU General Public License
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* along with volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _BUFFER_H_
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#define _BUFFER_H_
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#include <pthread.h>
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#include <sys/time.h>
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#include "reading.h"
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#include "list.h"
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class Buffer : public List<Reading> {
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public:
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Buffer();
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virtual ~Buffer();
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Iterator push(Reading data);
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Reading pop();
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void shrink(size_t keep);
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char * dump(char *dump, size_t len);
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protected:
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Iterator sent;
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pthread_mutex_t mutex;
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};
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#endif /* _BUFFER_H_ */
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