Equalizer  1.2.1
memoryMap.h
00001 
00002 /* Copyright (c) 2009-2011, 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 COBASE_MEMORYMAP_H
00019 #define COBASE_MEMORYMAP_H
00020 
00021 #include <co/base/api.h>
00022 #include <co/base/nonCopyable.h>
00023 
00024 #include <string>
00025 
00026 namespace co
00027 {
00028 namespace base
00029 {
00031     class MemoryMap : public NonCopyable
00032     {
00033     public:
00035         COBASE_API MemoryMap();
00036 
00044         COBASE_API ~MemoryMap();
00045 
00056         COBASE_API const void* map( const std::string& fileName );
00057 
00059         COBASE_API void unmap();
00060 
00062         const void* getAddress() const { return _ptr; }
00063 
00065         size_t getSize() const { return _size; }
00066 
00067     private:
00068 #ifdef _WIN32
00069         void* _map;
00070 #else
00071         int _fd;
00072 #endif
00073 
00074         void* _ptr;
00075         size_t _size;
00076     };
00077 
00078 }
00079 }
00080 
00081 #endif //COBASE_MEMORYMAP_H
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