mirror of
https://github.com/uroni/urbackup_backend.git
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85 lines
2.0 KiB
C++
85 lines
2.0 KiB
C++
/*************************************************************************
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* UrBackup - Client/Server backup system
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* Copyright (C) 2011-2016 Martin Raiber
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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 Affero 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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* (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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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#include "../vld.h"
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#include "bufmgr.h"
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#include "log.h"
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#ifdef _WIN32
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#include <Windows.h>
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#endif
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namespace fileserv
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{
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CBufMgr::CBufMgr(unsigned int nbuf, unsigned int bsize)
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{
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for(unsigned int i=0;i<nbuf;++i)
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{
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char* buffer;
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#ifndef _WIN32
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buffer=new char[bsize];
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#else
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buffer = reinterpret_cast<char*>(VirtualAlloc(NULL, bsize, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE));
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#endif
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buffers.push_back( buffer );
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free_buffers.push(buffer);
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}
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}
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CBufMgr::~CBufMgr(void)
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{
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if (free_buffers.size() != buffers.size())
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{
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Log("There are used buffers when freeing buffer manager", LL_ERROR);
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}
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for(size_t i=0;i<buffers.size();++i)
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{
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#ifndef _WIN32
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delete[] buffers[i];
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#else
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VirtualFree(buffers[i], 0, MEM_RELEASE);
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#endif
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}
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}
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char* CBufMgr::getBuffer(void)
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{
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if (!free_buffers.empty())
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{
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char* buffer = free_buffers.top();
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free_buffers.pop();
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return buffer;
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}
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else
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{
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return nullptr;
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}
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}
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void CBufMgr::releaseBuffer(char* buf)
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{
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free_buffers.push(buf);
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}
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unsigned int CBufMgr::nfreeBufffer(void)
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{
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return static_cast<unsigned int>(free_buffers.size());
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}
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} //namespace fileserv
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