diff options
Diffstat (limited to 'Source/Core/Common/Src/MappedFile.cpp')
| -rw-r--r-- | Source/Core/Common/Src/MappedFile.cpp | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/Source/Core/Common/Src/MappedFile.cpp b/Source/Core/Common/Src/MappedFile.cpp deleted file mode 100644 index 6c3e9832b9..0000000000 --- a/Source/Core/Common/Src/MappedFile.cpp +++ /dev/null @@ -1,233 +0,0 @@ -// Copyright (C) 2003-2009 Dolphin Project. - -// 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, version 2.0. - -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License 2.0 for more details. - -// A copy of the GPL 2.0 should have been included with the program. -// If not, see http://www.gnu.org/licenses/ - -// Official SVN repository and contact information can be found at -// http://code.google.com/p/dolphin-emu/ - -#ifdef _WIN32 -#include <windows.h> -#else -#include <unistd.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <fcntl.h> -#endif - -#include "Common.h" -#include "MappedFile.h" - -namespace Common -{ -class CMappedFile - : public IMappedFile -{ - public: - - CMappedFile(void); - ~CMappedFile(void); - bool Open(const char* _szFilename); - bool IsOpen(void); - void Close(void); - u64 GetSize(void); - u8* Lock(u64 _offset, u64 _size); - void Unlock(u8* ptr); - - - private: - - u64 size; - - typedef std::map<u8*, u8*>Lockmap; - Lockmap lockMap; -#ifdef _WIN32 - HANDLE hFile; - HANDLE hFileMapping; -#elif POSIX - int fd; - typedef std::map<u8*, size_t>Sizemap; - Sizemap sizeMap; -#endif - - int granularity; -}; - - -CMappedFile::CMappedFile() -{ -#ifdef _WIN32 - hFile = INVALID_HANDLE_VALUE; - SYSTEM_INFO info; - GetSystemInfo(&info); - granularity = (int)info.dwAllocationGranularity; -#elif POSIX - fd = -1; - granularity = getpagesize(); //sysconf(_SC_PAGE_SIZE); -#endif -} - - -CMappedFile::~CMappedFile() -{ - Close(); -} - - -bool CMappedFile::Open(const char* filename) -{ - Close(); -#ifdef _WIN32 - hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); - - if (hFile == INVALID_HANDLE_VALUE) - { - return(false); - } - - hFileMapping = CreateFileMapping(hFile, 0, PAGE_READONLY, 0, 0, NULL); - - if (hFileMapping == NULL) - { - CloseHandle(hFile); - hFile = 0; - return(false); - } - - u32 high = 0; - u32 low = GetFileSize(hFile, (LPDWORD)&high); - size = (u64)low | ((u64)high << 32); -#elif POSIX - fd = open(filename, O_RDONLY); - size = lseek(fd, 0, SEEK_END); - lseek(fd, 0, SEEK_SET); -#endif - - return(true); -} - - -bool CMappedFile::IsOpen() -{ -#ifdef _WIN32 - return(hFile != INVALID_HANDLE_VALUE); - -#elif POSIX - return(fd != -1); -#endif - -} - - -u64 CMappedFile::GetSize() -{ - return(size); -} - - -void CMappedFile::Close() -{ -#ifdef _WIN32 - if (hFile != INVALID_HANDLE_VALUE) - { - CloseHandle(hFileMapping); - CloseHandle(hFile); - lockMap.clear(); - hFile = INVALID_HANDLE_VALUE; - } - -#elif POSIX - if (fd != -1) - { - lockMap.clear(); - sizeMap.clear(); - close(fd); - } - - fd = -1; -#endif -} - - -u8* CMappedFile::Lock(u64 offset, u64 _size) -{ -#ifdef _WIN32 - if (hFile != INVALID_HANDLE_VALUE) -#elif POSIX - if (fd != -1) -#endif - { - u64 realOffset = offset & ~(granularity - 1); - s64 difference = offset - realOffset; - u64 fake_size = (difference + _size + granularity - 1) & ~(granularity - 1); -#ifdef _WIN32 - u8* realPtr = (u8*)MapViewOfFile(hFileMapping, FILE_MAP_READ, (DWORD)(realOffset >> 32), (DWORD)realOffset, (SIZE_T)(_size)); - - if (realPtr == NULL) - { - return(NULL); - } - -#elif POSIX - // TODO - u8* realPtr = (u8*)mmap(0, fake_size, PROT_READ, MAP_PRIVATE, fd, (off_t)realOffset); - - if (!realPtr) - { - PanicAlert("Map Failed"); - exit(0); - } -#endif - - u8* fakePtr = realPtr + difference; - //add to map - lockMap[fakePtr] = realPtr; -#ifndef _WIN32 - sizeMap[fakePtr] = _size + difference; -#endif - return(fakePtr); - } - else - { - return(0); - } -} - - -void CMappedFile::Unlock(u8* ptr) -{ - if (ptr != 0) - { - Lockmap::iterator iter = lockMap.find(ptr); - - if (iter != lockMap.end()) - { -#ifdef _WIN32 - UnmapViewOfFile((*iter).second); -#else - munmap((*iter).second, sizeMap[ptr]); -#endif - lockMap.erase(iter); - } - else - { - PanicAlert("CMappedFile : Unlock failed"); - } - } -} - - -IMappedFile* IMappedFile::CreateMappedFileDEPRECATED(void) -{ - return(new CMappedFile); -} -} // namespace Common |