62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// This source file is part of the ZipArchive library source distribution and
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// is Copyrighted 2000 - 2012 by Artpol Software - Tadeusz Dracz
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// For the licensing details refer to the License.txt file.
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//
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// Web Site: http://www.artpol-software.com
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ZIPARCHIVE_ZIPFILEMAPPING_DOT_H
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#error Do not include this file directly. Include ZipFileMapping.h instead
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#endif
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#include <sys/mman.h>
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namespace ZipArchiveLib
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{
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struct CZipFileMapping
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{
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CZipFileMapping()
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{
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m_iSize = 0;
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m_pFileMap = NULL;
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}
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bool CreateMapping(CZipFile* pFile)
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{
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if (!pFile)
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return false;
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m_iSize = pFile->GetLength();
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m_pFileMap = mmap(0, m_iSize, PROT_READ|PROT_WRITE, MAP_SHARED, pFile->m_hFile, 0);
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return (m_pFileMap != NULL);
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}
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void RemoveMapping()
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{
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if (m_pFileMap)
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{
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munmap(m_pFileMap, m_iSize);
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m_pFileMap = NULL;
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}
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}
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~CZipFileMapping()
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{
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RemoveMapping();
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}
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char* GetMappedMemory()
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{
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return reinterpret_cast<char*> (m_pFileMap);
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}
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protected:
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void* m_pFileMap;
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size_t m_iSize;
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};
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}
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