由于某种原因，桅杆和奴隶都失败了，但是我可以找到任何关于它们如何工作的好例子，所以我不确定我哪里出错了。
主机在 ConnectNamedPipe 之后永远不会退出 WaitForSingleObject，从机在第一个 boost::asio::read 调用中抛出异常，“等待进程打开管道的另一端”，我认为 WaitNamedPipe 是为了与 Master 中的 ConnectNamedPipe 一起等待？
大师.cpp
asio::io_service ioservice;
asio::windows::stream_handle in(ioservice);
int main()
{
HANDLE pipe = INVALID_HANDLE_VALUE;
try
{
//create pipe
pipe = CreateNamedPipe("\\\\.\\pipe\\FLTest",
PIPE_ACCESS_DUPLEX | FILE_FLAG_FIRST_PIPE_INSTANCE | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE,
255, 50000,50000, 0, 0);
if(pipe == INVALID_HANDLE_VALUE)
{
printWinError();
return -1;
}
in.assign(pipe);
std::cout << "Created pipe" << std::endl;
//spawn child
STARTUPINFO startInfo;
ZeroMemory(&startInfo, sizeof(STARTUPINFO));
startInfo.cb = sizeof(STARTUPINFO);
PROCESS_INFORMATION procInfo;
ZeroMemory(&procInfo, sizeof(PROCESS_INFORMATION));
if(CreateProcess(0, "slave.exe", 0,0, FALSE, CREATE_NEW_CONSOLE,
0, 0, &startInfo, &procInfo))
{
std::cout << "Slave process created" << std::endl;
}
else
{
printWinError();
DisconnectNamedPipe(pipe);
return -1;
}
OVERLAPPED overlapped = {0};
overlapped.hEvent = CreateEvent(0,TRUE,FALSE,0);
if(ConnectNamedPipe(pipe, &overlapped) == FALSE)
{
unsigned error = GetLastError();
if(error != ERROR_PIPE_CONNECTED &&
error != ERROR_IO_PENDING)
{
printWinError();
DisconnectNamedPipe(pipe);
return -1;
}
}
WaitForSingleObject(overlapped.hEvent, INFINITE);
CloseHandle(overlapped.hEvent);
std::cout << "Pipe connected" << std::endl;
for(int i = 0; i < 100; ++i)
{
boost::system::error_code error;
unsigned n = i * 5;
asio::write(in,asio::buffer((char*)&n, sizeof(unsigned)),
asio::transfer_all(), error);
if(error)throw boost::system::system_error(error);
}
std::cout << "Sent data" << std::endl;
FlushFileBuffers(pipe);
DisconnectNamedPipe(pipe);
system("pause");
return 0;
}
catch(const std::exception &e)
{
std::cout << e.what() << std::endl;
if(pipe != INVALID_HANDLE_VALUE)
DisconnectNamedPipe(pipe);
system("pause");
return -1;
}
}
从属.cpp
asio::io_service ioservice;
asio::windows::stream_handle in(ioservice);
int main()
{
try
{
WaitNamedPipe("\\\\.\\pipe\\FLTest", NMPWAIT_WAIT_FOREVER);
std::cout << "Pipe avaible" << std::endl;
HANDLE pipe = CreateNamedPipe("\\\\.\\pipe\\FLTest",
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE,
255, 50000,50000,0,0);
if(pipe == INVALID_HANDLE_VALUE)
{
printWinError();
return -1;
}
in.assign(pipe);
std::cout << "Pipe connected" << std::endl;
for(int i = 0; i < 100; ++i)
{
std::cout << "i: " << i << std::endl;
boost::system::error_code error;
unsigned n;
asio::read(in,asio::buffer((char*)&n,sizeof(unsigned)),
asio::transfer_all(), error);
if(error)throw boost::system::system_error(error);
}
system("pause");
return 0;
}
catch(const std::exception &e)
{
std::cout << e.what() << std::endl;
system("pause");
return -1;
}
}
显然我得到了一些完全错误的东西，但是我在网上找不到任何东西来比较我的代码。