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authorwatcherhd <watcherhd@e753b5eb-9565-29b2-b5c5-2cc6f99dfbcb>2011-11-26 14:19:43 +0000
committerwatcherhd <watcherhd@e753b5eb-9565-29b2-b5c5-2cc6f99dfbcb>2011-11-26 14:19:43 +0000
commit7aff1e4cb053394db57c2814d5fe1e6493e0cc75 (patch)
treec8585e44049b37e4da152495c954242204c2c38d /dbx_tree/MappedMemory.cpp
parent6f3d69266933ef120d229e0daf2da164b77214d0 (diff)
Project folders rename part 2
git-svn-id: http://miranda-plugins.googlecode.com/svn/trunk@214 e753b5eb-9565-29b2-b5c5-2cc6f99dfbcb
Diffstat (limited to 'dbx_tree/MappedMemory.cpp')
-rw-r--r--dbx_tree/MappedMemory.cpp167
1 files changed, 0 insertions, 167 deletions
diff --git a/dbx_tree/MappedMemory.cpp b/dbx_tree/MappedMemory.cpp
deleted file mode 100644
index 09a1471..0000000
--- a/dbx_tree/MappedMemory.cpp
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
-
-dbx_tree: tree database driver for Miranda IM
-
-Copyright 2007-2010 Michael "Protogenes" Kunz,
-
-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.
-
-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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-*/
-
-#include "MappedMemory.h"
-#include "Logger.h"
-
-typedef BOOL (WINAPI *TUnmapViewOfFile)(LPCVOID);
-typedef BOOL (WINAPI *TFlushViewOfFile)(LPCVOID, SIZE_T);
-typedef HANDLE (WINAPI *TCreateFileMappingA)(HANDLE, LPSECURITY_ATTRIBUTES, DWORD, DWORD, DWORD, LPCSTR);
-typedef LPVOID (WINAPI *TMapViewOfFile)(HANDLE, DWORD, DWORD, DWORD, SIZE_T);
-
-HMODULE myKernelLib = NULL;
-TUnmapViewOfFile myUnmapViewOfFile = NULL;
-TFlushViewOfFile myFlushViewOfFile = NULL;
-TCreateFileMappingA myCreateFileMappingA = NULL;
-TMapViewOfFile myMapViewOfFile = NULL;
-
-bool CMappedMemory::InitMMAP()
-{
- if (!myKernelLib)
- myKernelLib = GetModuleHandleA("kernel32.dll"); // is always loaded
-
- if (myKernelLib)
- {
- myUnmapViewOfFile = (TUnmapViewOfFile) GetProcAddress(myKernelLib, "UnmapViewOfFile");
- myFlushViewOfFile = (TFlushViewOfFile) GetProcAddress(myKernelLib, "FlushViewOfFile");
- myCreateFileMappingA = (TCreateFileMappingA) GetProcAddress(myKernelLib, "CreateFileMappingA");
- myMapViewOfFile = (TMapViewOfFile) GetProcAddress(myKernelLib, "MapViewOfFile");
- }
-
- return myUnmapViewOfFile && myFlushViewOfFile && myCreateFileMappingA && myMapViewOfFile;
-}
-CMappedMemory::CMappedMemory(const TCHAR* FileName)
-: CFileAccess(FileName)
-{
- SYSTEM_INFO sysinfo;
-
- m_AllocSize = 0;
- m_DirectFile = 0;
- m_FileMapping = 0;
- m_Base = NULL;
-
- GetSystemInfo(&sysinfo);
- m_AllocGranularity = sysinfo.dwAllocationGranularity; // usually 64kb
- m_MinAllocGranularity = m_AllocGranularity; // must be at least one segment
- m_MaxAllocGranularity = m_AllocGranularity << 4; // usually 1mb for fast increasing
-
- m_DirectFile = CreateFile(FileName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, 0);
- if (m_DirectFile == INVALID_HANDLE_VALUE)
- LOGSYS(logCRITICAL, _T("CreateFile failed"));
-
- uint32_t size = GetFileSize(m_DirectFile, NULL);
- size = (size + m_AllocGranularity - 1) & ~(m_AllocGranularity - 1);
-
- if (size == 0)
- size = m_AllocGranularity;
-
- _SetSize(size);
- m_AllocSize = size;
-
- InitJournal();
-}
-
-CMappedMemory::~CMappedMemory()
-{
- if (m_Base)
- {
- myFlushViewOfFile(m_Base, NULL);
- myUnmapViewOfFile(m_Base);
- }
- if (m_FileMapping)
- CloseHandle(m_FileMapping);
-
- if (m_DirectFile)
- {
- if (INVALID_SET_FILE_POINTER != SetFilePointer(m_DirectFile, m_Size, NULL, FILE_BEGIN))
- SetEndOfFile(m_DirectFile);
-
- FlushFileBuffers(m_DirectFile);
- CloseHandle(m_DirectFile);
- }
-}
-
-
-uint32_t CMappedMemory::_Read(void* Buf, uint32_t Source, uint32_t Size)
-{
- memcpy(Buf, m_Base + Source, Size);
- return Size;
-}
-uint32_t CMappedMemory::_Write(void* Buf, uint32_t Dest, uint32_t Size)
-{
- memcpy(m_Base + Dest, Buf, Size);
- return Size;
-}
-
-uint32_t CMappedMemory::_SetSize(uint32_t Size)
-{
- if (m_Base)
- {
- myFlushViewOfFile(m_Base, 0);
- myUnmapViewOfFile(m_Base);
- }
- if (m_FileMapping)
- CloseHandle(m_FileMapping);
-
- m_Base = NULL;
- m_FileMapping = NULL;
-
- if (INVALID_SET_FILE_POINTER == SetFilePointer(m_DirectFile, Size, NULL, FILE_BEGIN))
- {
- LOGSYS(logERROR, _T("SetFilePointer failed"));
- return 0;
- }
-
- if (!SetEndOfFile(m_DirectFile))
- {
- LOGSYS(logERROR, _T("Cannot set end of file"));
- return 0;
- }
-
- m_FileMapping = myCreateFileMappingA(m_DirectFile, NULL, PAGE_READWRITE, 0, Size, NULL);
-
- if (!m_FileMapping)
- {
- LOGSYS(logERROR, _T("CreateFileMapping failed"));
- return 0;
- }
-
- m_Base = (uint8_t*) myMapViewOfFile(m_FileMapping, FILE_MAP_ALL_ACCESS, 0, 0, 0);
- if (!m_Base)
- {
- LOGSYS(logERROR, _T("MapViewOfFile failed"));
- return 0;
- }
-
- return Size;
-}
-
-void CMappedMemory::_Invalidate(uint32_t Dest, uint32_t Size)
-{
- memset(m_Base + Dest, 0, Size);
-}
-
-void CMappedMemory::_Flush()
-{
- myFlushViewOfFile(m_Base, NULL);
- FlushFileBuffers(m_DirectFile);
-}