91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
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/***************************************************************************
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* Copyright (C) 2011 by Lothar May *
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* *
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* This program 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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* *
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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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* *
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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 *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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/* Manager for sending network data. */
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#ifndef _SENDDATAMANAGER_H_
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#define _SENDDATAMANAGER_H_
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#include <boost/asio.hpp>
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#include <boost/thread.hpp>
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#include <boost/enable_shared_from_this.hpp>
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#include <cstdlib>
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#define SEND_BUF_FIRST_ALLOC_CHUNKSIZE 4096
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#define MAX_SEND_BUF_SIZE SEND_BUF_FIRST_ALLOC_CHUNKSIZE * 1000
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class SendDataManager : public boost::enable_shared_from_this<SendDataManager>
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{
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public:
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SendDataManager();
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~SendDataManager();
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inline size_t GetSendBufLeft() const
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{
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int bytesLeft = sendBufAllocated - sendBufUsed;
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return bytesLeft < 0 ? (size_t)0 : (size_t)bytesLeft;
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}
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inline size_t GetAllocated() const
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{
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return sendBufAllocated;
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}
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inline bool ReallocSendBuf()
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{
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bool retVal = false;
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size_t allocAmount = sendBufAllocated * 2;
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if (0 == allocAmount) {
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allocAmount = (size_t)SEND_BUF_FIRST_ALLOC_CHUNKSIZE;
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}
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char *tempBuf = (char *)std::realloc(sendBuf, allocAmount);
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if (tempBuf) {
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sendBuf = tempBuf;
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sendBufAllocated = allocAmount;
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retVal = true;
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}
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return retVal;
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}
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inline void AppendToSendBufWithoutCheck(const char *data, size_t size)
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{
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std::memcpy(sendBuf + sendBufUsed, data, size);
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sendBufUsed += size;
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}
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void HandleWrite(boost::shared_ptr<boost::asio::ip::tcp::socket> socket, const boost::system::error_code &error);
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void AsyncSendNextPacket(boost::shared_ptr<boost::asio::ip::tcp::socket> socket);
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static int EncodeToBuf(const void *data, size_t size, void *arg);
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mutable boost::mutex dataMutex;
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private:
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char *sendBuf;
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char *curWriteBuf;
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size_t sendBufAllocated;
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size_t sendBufUsed;
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size_t curWriteBufAllocated;
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size_t curWriteBufUsed;
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};
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#endif
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