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/*
* Copyright (c) 2007, Technische Universitaet Berlin
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of the Technische Universitaet Berlin nor the names
* of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @author Philipp Huppertz <huppertz@tkn.tu-berlin.de>
*/
#ifndef PACKETBUFFER_H
#define PACKETBUFFER_H
#include <pthread.h>
#include <list>
#include "sfpacket.h"
// #define DEBUG_PACKETBUFFER
#undef DEBUG
#ifdef DEBUG_PACKETBUFFER
#include <iostream>
#define DEBUG(message) std::cout << message << std::endl;
#else
#define DEBUG(message)
#endif
class PacketBuffer
{
protected:
static const unsigned cMaxBufferSize = 25;
typedef std::list<SFPacket> container_t;
// thread safe buffer
typedef struct
{
// mutex lock for any of this vars
pthread_mutex_t lock;
// notempty cond
pthread_cond_t notempty;
// not full cond
pthread_cond_t notfull;
// actual buffer
container_t container;
} sharedBuffer_t;
sharedBuffer_t buffer;
public:
PacketBuffer();
~PacketBuffer();
void clear();
SFPacket dequeue();
bool enqueueFront(SFPacket &pPacket);
bool enqueueBack(SFPacket &pPacket);
bool isFull();
bool isEmpty();
bool isInQueue(SFPacket &pPacket);
};
#endif
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