1 /* 2 Copyright (C) 2010-2014 Kristian Duske 3 4 This file is part of TrenchBroom. 5 6 TrenchBroom is free software: you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation, either version 3 of the License, or 9 (at your option) any later version. 10 11 TrenchBroom is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with TrenchBroom. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #ifndef TrenchBroom_MappedFile 21 #define TrenchBroom_MappedFile 22 23 #include "SharedPointer.h" 24 25 #include "Exceptions.h" 26 27 #include <vector> 28 29 #ifdef _WIN32 30 // can't include Windows.h here 31 typedef void *HANDLE; 32 #endif 33 34 namespace TrenchBroom { 35 namespace IO { 36 class Path; 37 38 class MappedFile { 39 public: 40 typedef std::shared_ptr<MappedFile> Ptr; 41 typedef std::vector<Ptr> List; 42 private: 43 const char* m_begin; 44 const char* m_end; 45 size_t m_size; 46 public: 47 MappedFile(); 48 virtual ~MappedFile(); 49 50 size_t size() const; 51 const char* begin() const; 52 const char* end() const; 53 protected: 54 void init(const char* begin, const char* end); 55 }; 56 57 class MappedFileView : public MappedFile { 58 public: 59 MappedFileView(const char* begin, const char* end); 60 }; 61 62 #ifdef _WIN32 63 class WinMappedFile : public MappedFile { 64 private: 65 HANDLE m_fileHandle; 66 HANDLE m_mappingHandle; 67 char* m_address; 68 public: 69 WinMappedFile(const Path& path, std::ios_base::openmode mode); 70 ~WinMappedFile(); 71 }; 72 #else 73 class PosixMappedFile : public MappedFile { 74 private: 75 char* m_address; 76 size_t m_size; 77 int m_filedesc; 78 public: 79 PosixMappedFile(const Path& path, std::ios_base::openmode mode); 80 ~PosixMappedFile(); 81 }; 82 #endif 83 } 84 } 85 86 #endif /* defined(TrenchBroom_MappedFile) */ 87