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////////////////////////////////////////////////////////////////////////////////
// This source file is part of the ZipArchive Library Open Source distribution
// and is Copyrighted 2000 - 2022 by Artpol Software - Tadeusz Dracz
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// For the licensing details refer to the License.txt file.
//
// Web Site: https://www.artpol-software.com
////////////////////////////////////////////////////////////////////////////////
#ifndef ZIPARCHIVE_ZIPFILEMAPPING_DOT_H
#error Do not include this file directly. Include ZipFileMapping.h instead
#endif
#include <sys/mman.h>
namespace ZipArchiveLib
{
struct CZipFileMapping
{
CZipFileMapping()
{
m_iSize = 0;
m_pFileMap = NULL;
}
bool CreateMapping(CZipFile* pFile)
{
if (!pFile)
return false;
m_iSize = (size_t)pFile->GetLength();
m_pFileMap = mmap(0, m_iSize, PROT_READ|PROT_WRITE, MAP_SHARED, pFile->m_hFile, 0);
return (m_pFileMap != NULL);
}
void RemoveMapping()
{
if (m_pFileMap)
{
munmap(m_pFileMap, m_iSize);
m_pFileMap = NULL;
}
}
~CZipFileMapping()
{
RemoveMapping();
}
char* GetMappedMemory()
{
return reinterpret_cast<char*> (m_pFileMap);
}
protected:
void* m_pFileMap;
size_t m_iSize;
};
}
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