kev/Drawer/SSBase/DrawLocal/FileMappingBase.h

/////////////////////////////////////////////////////////////////////////////
//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>: 
//		<09>ļ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD>
//
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д:		2008-11-09
//
//
/////////////////////////////////////////////////////////////////////////////

#pragma once

namespace NFile64
{

////////////////////////////////////////////////////////////////////////////////////////////////
// ģ<><C4A3>: <20>ڴ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC>û<EFBFBD><C3BB><EFBFBD>
// ˵<><CBB5>:
//       <20><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>н<EFBFBD><D0BD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD>ڴ湲<DAB4><E6B9B2>
////////////////////////////////////////////////////////////////////////////////////////////////

class CFileMappingBase : public CObject
{
	DECLARE_DYNAMIC(CFileMappingBase)

public:
	CFileMappingBase(void);
	virtual ~CFileMappingBase(void);

	//<2F><>ӳ<EFBFBD><D3B3>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ҫָ<D2AA><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ<EFBFBD>Լ<EFBFBD><D4BC><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ij<EFBFBD><C4B3>ȡ<EFBFBD>
	//<2F><><EFBFBD>У<EFBFBD><D0A3>ļ<EFBFBD><C4BC><EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ<EFBFBD><D6B7>64λֵ<CEBB><D6B5>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ұ<EFBFBD><D2B1><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD>ϵͳ<CFB5>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

	//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ƻ<EFBFBD><C6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǽ<EFBFBD>'\'<27>滻Ϊ<E6BBBB><CEAA>'_'
	CString CreateMappingName(const CString& sName);

	//Create and open/////////////////////////////////////////////////////////////////////////////////////////////
	//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD>䣬ȱʡ<C8B1><CAA1><EFBFBD><EFBFBD>ֻ<EFBFBD>ܶ<EFBFBD><DCB6>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>,<2C>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,
	//<2F><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ȴ<EFBFBD><C8B4>ڣ<EFBFBD><DAA3><EFBFBD>(32λѰַ)ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>ƫ<EFBFBD>Ƶ<EFBFBD>ַnOffset,<2C><><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2>Զ<EFBFBD><D4B6><EFBFBD>nOffsetȡ<74>˷<EFBFBD><CBB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	BOOL Open(
			LPCTSTR lpszFilePath,
			LPCTSTR lpszMappingName,
			SIZE_T nMappingSize = 0,
			ULONGLONG nOffset = 0,
			DWORD dwFileDesiredAccess = GENERIC_READ,
			DWORD dwMappingProtection = PAGE_READONLY,
			DWORD dwViewDesiredAccess = FILE_MAP_READ
			);

	//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD>䣬<EFBFBD><E4A3AC><EFBFBD>Զ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ж<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>,<2C>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>Ƕ<EFBFBD>Open<65><6E><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>װ
	BOOL OpenWrite(
			LPCTSTR lpszFilePath,
			LPCTSTR lpszMappingName,
			SIZE_T nMappingSize/* = 0*/,
			ULONGLONG nOffset/* = 0*/
			);

	//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3>
	BOOL MapFile(
			HANDLE hFile,
			LPCTSTR lpszMappingName,
			SIZE_T nMappingSize = 0,
			ULONGLONG nOffset = 0,
			DWORD dwMappingProtection = PAGE_READONLY,
			DWORD dwViewDesiredAccess = FILE_MAP_READ
			);

	//ֱ<>ӹ<EFBFBD><D3B9><EFBFBD><EFBFBD>ڴ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3><EFBFBD><EFBFBD>ɺ<EFBFBD><C9BA><EFBFBD><EFBFBD>Ը<EFBFBD><D4B8><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>OpenMapping<6E><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>
	BOOL MapSharedMem(
			LPCTSTR lpszMappingName,
			SIZE_T nMappingSize,						//>0
			BOOL* pbAlreadyExisted = NULL,
			LPSECURITY_ATTRIBUTES lpsa = NULL,
			DWORD dwMappingProtection = PAGE_READWRITE,
			DWORD dwViewDesiredAccess = FILE_MAP_ALL_ACCESS
			);

	//<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3><EFBFBD><EFBFBD>ɺ<EFBFBD><C9BA><EFBFBD><EFBFBD>Ը<EFBFBD><D4B8><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>OpenMapping<6E><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ治<DAB4><E6B2BB>ʱֱ<CAB1><D6B1>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>Ӳ<EFBFBD><D3B2><EFBFBD>ļ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ڴ<EFBFBD><DAB4>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>⣩
	BOOL MapFileSharedMem(
			LPCTSTR lpszMappingName,
			SIZE_T nMappingSize,						//>0
			BOOL* pbAlreadyExisted = NULL,
			LPSECURITY_ATTRIBUTES lpsa = NULL,
			DWORD dwMappingProtection = PAGE_READWRITE,
			DWORD dwViewDesiredAccess = FILE_MAP_ALL_ACCESS
			);

	//Open mapping//////////////////////////////////////////////////////////////////////////////////////////////////
	//<2F><><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>ƴ<EFBFBD><C6B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>ӳ<EFBFBD><D3B3>
	BOOL OpenMapping(
			LPCTSTR lpszMappingName,
			SIZE_T nMappingSize = 0,	//default max. object size 
			ULONGLONG nOffset = 0,		//default map entire file
			DWORD dwViewDesiredAccess = FILE_MAP_READ //<2F><>дʱ<D0B4><CAB1>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>Ϊ FILE_MAP_ALL_ACCESS
			);
	//Remap view///////////////////////////////////////////////////////////////////////////////////////////////////
	//<2F><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>4Gʱ<47><CAB1><EFBFBD><EFBFBD>Ҫӳ<D2AA><D3B3><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD><CEA3>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѵ<EFBFBD><D1B4><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD>ϸ<EFBFBD><CFB8><EFBFBD>ƫ<EFBFBD>Ƽ<EFBFBD>ӳ<EFBFBD>䳤<EFBFBD><E4B3A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>
	BOOL OpenNextMapping(
			SIZE_T nMappingSize,
			ULONGLONG nOffset
			);

	//Write/////////////////////////////////////////////////////////////////////////////////////////////////////////
	//<2F><>ӳ<EFBFBD><D3B3><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>
	BOOL Save(
			void* lpBaseAddress=NULL,			//Ϊ<><CEAA>ʱ<EFBFBD><CAB1>ʾдȫ<D0B4><C8AB>ӳ<EFBFBD><D3B3>
			SIZE_T dwNumberOfBytesToFlush=0		//Ϊ0ʱ<30><CAB1>ʾ<EFBFBD><CABE>lpBaseAddress<73><73>ַ<EFBFBD><D6B7>д<EFBFBD><D0B4><EFBFBD><EFBFBD>β
			);
	BOOL		SaveAs(LPCTSTR lpFileName);				//<2F><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>

	DWORD		GetErrorMessage(bool bMessageBox=true);	//<2F><><EFBFBD>ó<EFBFBD><C3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ID<49><44>,<2C><><EFBFBD>߱<EFBFBD><DFB1><EFBFBD>һ<EFBFBD><D2BB>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
	BOOL		IsCanWrite(void);						//<2F>ж<EFBFBD><D0B6>Ѵ򿪵<D1B4>ӳ<EFBFBD><D3B3><EFBFBD>Ƿ<EFBFBD>֧<EFBFBD><D6A7>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
	BOOL		IsOpen(void);							//<2F>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ӳ<EFBFBD><D3B3>
	void		Close(void);							//<2F>ر<EFBFBD>ӳ<EFBFBD>䣬ͬUnmap()
	void		Unmap(void);							//<2F>ر<EFBFBD>ӳ<EFBFBD><D3B3>
	void*		GetData(void);							//<2F><><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>Ŀ<EFBFBD>ʼָ<CABC><D6B8>
	SIZE_T		GetMappingSize(void);					//<2F><><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>Ĵ<EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD>û<EFBFBD><C3BB>ָ<EFBFBD><D6B8>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD>СʱΪ0
	ULONGLONG	GetOffset(void);						//<2F><><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD>
	HANDLE		GetHandle(void);						//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC>ľ<EFBFBD><C4BE><EFBFBD>
	ULONGLONG	GetPosition(void);						//<2F><><EFBFBD>õ<EFBFBD>ǰλ<C7B0><CEBB>

	BOOL		Seek(ULONGLONG nOffset, int nOrigin);	//<2F><><EFBFBD>õ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>λ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD>ʼʱnOffset<65><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD>,<2C><>Ϊ<EFBFBD><CEAA>βʱ<CEB2><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD>䳤<EFBFBD>ȵ<EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD>
	SIZE_T		Read(char* value, SIZE_T nLength);		//<2F>ӵ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>괦<EFBFBD><EAB4A6>ȡָ<C8A1><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>value<75>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>nLength<74><68><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1>µ<EFBFBD>λ<EFBFBD><CEBB>
	char*		GetCursor(void);						//<2F><><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD>ָ<EFBFBD><D6B8>

	//Other////////////////////////////////////////////////////////////////////////////////////////////////////////
	//<2F><>̬<EFBFBD><CCAC>ȡ<EFBFBD><C8A1>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>ϵͳ<CFB5>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C>õ<EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD>С<EFBFBD>ڴ浥λ,<2C><><EFBFBD><EFBFBD>Windows<77><73><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȹ̶<C8B9>Ϊ64KB
	DWORD		GetSysAllocationGranularity(void);
	ULONGLONG	GetFileLength(void);					//<2F><><EFBFBD>ñ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC>ij<EFBFBD><C4B3><EFBFBD>
	CString		GetFileName(void);						//<2F><><EFBFBD>ñ<EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

protected:
	virtual void AfterMapViewSucceed(void);
	char* m_lpCursor;

private:
	void*		m_pData;
	HANDLE		m_hMapping;								//ӳ<><D3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

	HANDLE		m_hPhysicsFile;							//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪOpenMappingʱΪ<CAB1><CEAA>
	ULONGLONG	m_nFileLength;							//<2F><>ǰ<EFBFBD><C7B0>ӳ<EFBFBD><D3B3><EFBFBD>ļ<EFBFBD><C4BC>ij<EFBFBD><C4B3>ȣ<EFBFBD><C8A3><EFBFBD>ΪOpenMappingʱΪ0
	CString		m_strFileName;							//<2F><>ǰ<EFBFBD><C7B0>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ƣ<EFBFBD><C6A3><EFBFBD>ΪOpenMappingʱΪ<CAB1><CEAA>

	DWORD		m_dwAlign;								//ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD>С<EFBFBD>ڴ浥λ,<2C><><EFBFBD><EFBFBD>Windows<77><73><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȹ̶<C8B9>Ϊ64KB
	ULARGE_INTEGER m_nOffset;							//ƫ<><C6AB>
	SIZE_T		m_nMappingSize;							//ӳ<>䳤<EFBFBD><E4B3A4>
	DWORD		m_dwViewDesiredAccess;

	BOOL		MapView();								//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>úõIJ<C3B5><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD>ַ
};

};
using namespace NFile64;

ULONGLONG GetFileLength(LPCTSTR lpFileName);			//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ƻ<EFBFBD><C6BB><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD>ֵ<0ʱ<30><CAB1>ʾ<EFBFBD><CABE><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

inline void* CFileMappingBase::GetData(void)
{
	return m_pData;
}

inline SIZE_T CFileMappingBase::GetMappingSize(void)
{
	return m_nMappingSize;
}

inline HANDLE CFileMappingBase::GetHandle(void)
{
	return m_hMapping;
}

inline ULONGLONG CFileMappingBase::GetOffset(void)
{
	return m_nOffset.QuadPart;
}

inline char* CFileMappingBase::GetCursor(void)
{
	return m_lpCursor;
}