www.pudn.com > IPPack.rar > ShareMemory.h

/////////////////////////////////////////// 
// ShareMemory.h文件 
 
 
#ifndef __SHAREMEMORY_H__ 
#define __SHAREMEMORY_H__ 
 
class CShareMemory 
{ 
public: 
// 构造函数和析构函数 
	CShareMemory(const char * pszMapName, int nFileSize = 0, BOOL bServer = FALSE); 
	~CShareMemory(); 
// 属性 
	LPVOID GetBuffer() const { return  m_pBuffer; } 
// 实现 
private: 
	HANDLE	m_hFileMap; 
	LPVOID	m_pBuffer; 
}; 
 
inline CShareMemory::CShareMemory(const char * pszMapName,  
			int nFileSize, BOOL bServer) : m_hFileMap(NULL), m_pBuffer(NULL) 
{ 
	if(bServer) 
	{ 
		// 创建一个内存映射文件对象 
		m_hFileMap = CreateFileMapping(INVALID_HANDLE_VALUE,  
			NULL, PAGE_READWRITE, 0, nFileSize, pszMapName); 
	} 
	else 
	{ 
		// 打开一个内存映射文件对象 
		m_hFileMap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, pszMapName); 
	} 
	 
	// 映射它到内存，取得共享内存的首地址 
	m_pBuffer = (LPBYTE)MapViewOfFile( 
		m_hFileMap, 
		FILE_MAP_ALL_ACCESS, 
		0, 
		0, 
		0 
		); 
} 
 
inline CShareMemory::~CShareMemory() 
{ 
	// 取消文件的映射，关闭文件映射对象句柄 
	UnmapViewOfFile(m_pBuffer); 
	CloseHandle(m_hFileMap); 
} 
 
#endif // __SHAREMEMORY_H__ 
 
/* 
 
 
发送数据端： 
	char szPathName[MAX_PATH] = ""; 
	::GetModuleFileName(NULL, szPathName, MAX_PATH - 1); 
	HANDLE hEvent = CreateEvent(NULL, FALSE, FALSE, "HOOK_WAIT_EVENT"); 
	CShareMemory sm("APP_PATH_NAME", 1024, TRUE); 
	LPVOID lpBuffer = sm.GetBuffer(); 
	strcpy((char*)lpBuffer, szPathName); 
	::PostThreadMessage(g_dwThread, UM_START, (WPARAM)hWnd, (LPARAM)0); 
	WaitForSingleObject(hEvent, 1000); 
  
接收数据端 
	CShareMemory sm("APP_PATH_NAME"); 
	LPVOID lpBuffer = sm.GetBuffer(); 
	XTRACE("APP_PATH_NAME %s\n", lpBuffer); 
	strcpy(_szAppModuleName, (char*)lpBuffer); 
	HANDLE hEvent = CreateEvent(NULL, FALSE, FALSE, "HOOK_WAIT_EVENT"); 
	SetEvent(hEvent); 
  
*/