进程间通信之匿名管道

来源：互联网发布：java怎么做游戏编辑：程序博客网时间：2024/05/17 21:48

关键步骤

【1】创建管道（一定是主进程创建）
【2】创建子进程
【3】两个进程都有读写匿名管道的功能

主进程的主要处理函数（MFC）

void CParentView::OnPipeCreate() {    // TODO: Add your command handler code here    SECURITY_ATTRIBUTES sa;    sa.bInheritHandle=TRUE;    sa.lpSecurityDescriptor=NULL;    sa.nLength=sizeof(SECURITY_ATTRIBUTES);    if(!CreatePipe(&hRead,&hWrite,&sa,0))    {        MessageBox("创建匿名管道失败！");        return;    }    STARTUPINFO sui;    PROCESS_INFORMATION pi;    ZeroMemory(&sui,sizeof(STARTUPINFO));    sui.cb=sizeof(STARTUPINFO);    sui.dwFlags=STARTF_USESTDHANDLES;    sui.hStdInput=hRead;    sui.hStdOutput=hWrite;    sui.hStdError=GetStdHandle(STD_ERROR_HANDLE);    if(!CreateProcess("..\\Child\\Debug\\Child.exe",NULL,NULL,NULL,            TRUE,0,NULL,NULL,&sui,&pi))    {        CloseHandle(hRead);        CloseHandle(hWrite);        hRead=NULL;        hWrite=NULL;        MessageBox("创建子进程失败！");        return;    }    else    {        CloseHandle(pi.hProcess);        CloseHandle(pi.hThread);    }}void CParentView::OnPipeRead() {    // TODO: Add your command handler code here    char buf[100];    DWORD dwRead;    if(!ReadFile(hRead,buf,100,&dwRead,NULL))    {        MessageBox("读取数据失败！");        return;    }    MessageBox(buf);}void CParentView::OnPipeWrite() {    // TODO: Add your command handler code here    char buf[]="http://www.sunxin.org";    DWORD dwWrite;    if(!WriteFile(hWrite,buf,strlen(buf)+1,&dwWrite,NULL))    {        MessageBox("写入数据失败！");        return;    }}

子进程的主要处理函数（MFC）

void CChildView::OnPipeRead() {    // TODO: Add your command handler code here    char buf[100];    DWORD dwRead;    if(!ReadFile(hRead,buf,100,&dwRead,NULL))    {        MessageBox("读取数据失败！");        return;    }    MessageBox(buf);}void CChildView::OnPipeWrite() {    // TODO: Add your command handler code here    char buf[]="匿名管道测试程序";    DWORD dwWrite;    if(!WriteFile(hWrite,buf,strlen(buf)+1,&dwWrite,NULL))    {        MessageBox("写入数据失败！");        return;    }}void CChildView::OnInitialUpdate() {    CView::OnInitialUpdate();    // TODO: Add your specialized code here and/or call the base class    hRead=GetStdHandle(STD_INPUT_HANDLE);    hWrite=GetStdHandle(STD_OUTPUT_HANDLE);}

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