Lunchbox  1.6.0
memoryMap.h
00001 
00002 /* Copyright (c) 2009-2012, Stefan Eilemann <eile@equalizergraphics.com> 
00003  *
00004  * This library is free software; you can redistribute it and/or modify it under
00005  * the terms of the GNU Lesser General Public License version 2.1 as published 
00006  * by the Free Software Foundation.
00007  *  
00008  * This library is distributed in the hope that it will be useful, but WITHOUT
00009  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00010  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
00011  * details.
00012  * 
00013  * You should have received a copy of the GNU Lesser General Public License
00014  * along with this library; if not, write to the Free Software Foundation, Inc.,
00015  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00016  */
00017 
00018 #ifndef LUNCHBOX_MEMORYMAP_H
00019 #define LUNCHBOX_MEMORYMAP_H
00020 
00021 #include <lunchbox/api.h>
00022 #include <lunchbox/nonCopyable.h>
00023 
00024 #include <string>
00025 
00026 namespace lunchbox
00027 {
00029     class MemoryMap : public NonCopyable
00030     {
00031     public:
00033         LUNCHBOX_API MemoryMap();
00034 
00042         LUNCHBOX_API ~MemoryMap();
00043 
00054         LUNCHBOX_API const void* map( const std::string& fileName );
00055 
00057         LUNCHBOX_API void unmap();
00058 
00060         const void* getAddress() const { return _ptr; }
00061 
00063         size_t getSize() const { return _size; }
00064 
00065     private:
00066 #ifdef _WIN32
00067         void* _map;
00068 #else
00069         int _fd;
00070 #endif
00071 
00072         void* _ptr;
00073         size_t _size;
00074     };
00075 }
00076 
00077 #endif //LUNCHBOX_MEMORYMAP_H