哪里有管道通信的例程
最近学习管道通信，但是缺少例程，学习起来比较费劲，windows核心编程以及win32多线程都好像没有，不知道在哪里找
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MSDN上就有
/*The following is the code for the parent process. It takes a single command-line argument: the name of a text file.*/
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#define BUFSIZE 4096
HANDLE hChildStdinRd, hChildStdinWr,
hChildStdoutRd, hChildStdoutWr,
hInputFile, hStdout;
BOOL CreateChildProcess(VOID);
VOID WriteToPipe(VOID);
VOID ReadFromPipe(VOID);
VOID ErrorExit(LPSTR);
int _tmain(int argc, TCHAR *argv[])
{
SECURITY_ATTRIBUTES saAttr;
BOOL fSuccess;
// Set the bInheritHandle flag so pipe handles are inherited.
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
// Get the handle to the current STDOUT.
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
// Create a pipe for the child process's STDOUT.
if (! CreatePipe(&hChildStdoutRd, &hChildStdoutWr, &saAttr, 0))
ErrorExit("Stdout pipe creation failed\n");
// Ensure that the read handle to the child process's pipe for STDOUT is not inherited.
SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0);
// Create a pipe for the child process's STDIN.
if (! CreatePipe(&hChildStdinRd, &hChildStdinWr, &saAttr, 0))
ErrorExit("Stdin pipe creation failed\n");
// Ensure that the write handle to the child process's pipe for STDIN is not inherited.
SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0);
// Now create the child process.
fSuccess = CreateChildProcess();
if (! fSuccess)
ErrorExit("Create process failed with");
// Get a handle to the parent's input file.
if (argc == 1)
ErrorExit("Please specify an input file");
printf( "\nContents of %s:\n\n", argv[1]);
hInputFile = CreateFile(argv[1], GENERIC_READ, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
if (hInputFile == INVALID_HANDLE_VALUE)
ErrorExit("CreateFile failed");
// Write to pipe that is the standard input for a child process.
WriteToPipe();
// Read from pipe that is the standard output for child process.
ReadFromPipe();
return 0;
}
BOOL CreateChildProcess()
{
TCHAR szCmdline[]=TEXT("child");
PROCESS_INFORMATION piProcInfo;
STARTUPINFO siStartInfo;
BOOL bFuncRetn = FALSE;
// Set up members of the PROCESS_INFORMATION structure.
ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
// Set up members of the STARTUPINFO structure.
ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
siStartInfo.cb = sizeof(STARTUPINFO);
siStartInfo.hStdError = hChildStdoutWr;
siStartInfo.hStdOutput = hChildStdoutWr;
siStartInfo.hStdInput = hChildStdinRd;
siStartInfo.dwFlags
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= STARTF_USESTDHANDLES;
// Create the child process.
bFuncRetn = CreateProcess(NULL,
szCmdline, // command line
NULL, // process security attributes
NULL, // primary thread security attributes
TRUE, // handles are inherited
0, // creation flags
NULL, // use parent's environment
NULL, // use parent's current directory
&siStartInfo, // STARTUPINFO pointer
&piProcInfo); // receives PROCESS_INFORMATION
if (bFuncRetn == 0)
ErrorExit("CreateProcess failed\n");
else
{
CloseHandle(piProcInfo.hProcess);
CloseHandle(piProcInfo.hThread);
return bFuncRetn;
}
}
VOID WriteToPipe(VOID)
{
DWORD dwRead, dwWritten;
CHAR chBuf[BUFSIZE];
// Read from a file and write its contents to a pipe.
for (;;)
{
if (! ReadFile(hInputFile, chBuf, BUFSIZE, &dwRead, NULL)
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dwRead == 0) break;
if (! WriteFile(hChildStdinWr, chBuf, dwRead,
&dwWritten, NULL)) break;
}
// Close the pipe handle so the child process stops reading.
if (! CloseHandle(hChildStdinWr))
ErrorExit("Close pipe failed\n");
}
VOID ReadFromPipe(VOID)
{
DWORD dwRead, dwWritten;
CHAR chBuf[BUFSIZE];
// Close the write end of the pipe before reading from the
// read end of the pipe.
if (!CloseHandle(hChildStdoutWr))
ErrorExit("Closing handle failed");
// Read output from the child process, and write to parent's STDOUT.
for (;;)
{
if( !ReadFile( hChildStdoutRd, chBuf, BUFSIZE, &dwRead,
NULL)
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dwRead == 0) break;
if (! WriteFile(hStdout, chBuf, dwRead, &dwWritten, NULL))
break;
}
}
VOID ErrorExit (LPSTR lpszMessage)
{
fprintf(stderr, "%s\n", lpszMessage);
ExitProcess(0);
}
/*The following is the code for the child process. It uses the inherited handles for STDIN and STDOUT to access the pipe created by the parent. The parent process reads from its input file and writes the information to a pipe. The child receives text through the pipe using STDIN and writes to the pipe using STDOUT. The parent reads from the read end of the pipe and displays the information to its STDOUT.*/
#include <windows.h>
#define BUFSIZE 4096
VOID main(VOID)
{
CHAR chBuf[BUFSIZE];
DWORD dwRead, dwWritten;
HANDLE hStdin, hStdout;
BOOL fSuccess;
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
hStdin = GetStdHandle(STD_INPUT_HANDLE);
if ((hStdout == INVALID_HANDLE_VALUE)
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(hStdin == INVALID_HANDLE_VALUE))
ExitProcess(1);
for (;;)
{
// Read from standard input.
fSuccess = ReadFile(hStdin, chBuf, BUFSIZE, &dwRead, NULL);
if (! fSuccess
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dwRead == 0)
break;
// Write to standard output.
fSuccess = WriteFile(hStdout, chBuf, dwRead, &dwWritten, NULL);
if (! fSuccess)
break;
}
}
