C++进程间共享数据实例

int main(int argc, char *argv[]) 
{ 
    //RecursiveDelete("C:\\20_128\\"); 
    //SelfRun("runModel"); 
    //进程间内存共享 
    LPCTSTR lpName= "hello"; 
    LPCTSTR lpContent = "123456"; 
    HANDLE hMap = ::OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, lpName); 
    if (NULL == hMap) //打开失败 
    { 
        //创建 
        hMap = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, 0, strlen(lpContent), lpName); 
        if (hMap == NULL) 
        { 
            return -1; 
        } 
        //写入 
        LPVOID lpBase = ::MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, 0); 
        strcpy((char*)lpBase, lpContent); 
        printf("write %s\n", lpContent); 
    } 
    else 
    { 
        //打开成功就只读取 
        LPVOID lpBase = ::MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, 0); 
        if (lpBase == NULL) 
        { 
            return -1; 
        } 
        printf("read %s\n",(char*)lpBase); 
    } 
     
    getchar(); 
    return 0; 
}