public void Open(string path, FileAccess mode, uint timeout) { IntPtr nativeHandle; for (; ;) { NativeMethods.SecurityAttributes security = new NativeMethods.SecurityAttributes(); security.inheritHandle = true; security.Length = Marshal.SizeOf(security); nativeHandle = NativeMethods.CreateFile(path, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, 0, security, NativeMethods.OPEN_EXISTING, NativeMethods.FILE_FLAG_OVERLAPPED, 0); if (nativeHandle != IntPtr.Zero) { break; } if (Marshal.GetLastWin32Error() != ERROR_PIPE_BUSY) { throw new Win32Exception(Marshal.GetLastWin32Error(), "Error opening pipe"); } LowResolutionStopwatch sw = LowResolutionStopwatch.StartNew(); bool success = NativeMethods.WaitNamedPipe(path, timeout); sw.Stop(); if (!success) { if (timeout < sw.ElapsedMilliseconds || Marshal.GetLastWin32Error() == ERROR_SEM_TIMEOUT) { throw new TimeoutException("Timeout waiting for named pipe"); } else { throw new Win32Exception(Marshal.GetLastWin32Error(), "Error waiting for pipe"); } } timeout -= (uint)sw.ElapsedMilliseconds; } handle = new SafeFileHandle(nativeHandle, true); fileStream = new FileStream(handle, mode, 4096, true); }
public void Open(string path, FileAccess mode, uint timeout) { IntPtr nativeHandle; for (; ; ) { NativeMethods.SecurityAttributes security = new NativeMethods.SecurityAttributes(); security.inheritHandle = true; security.Length = Marshal.SizeOf(security); nativeHandle = NativeMethods.CreateFile(path, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, 0, security, NativeMethods.OPEN_EXISTING, NativeMethods.FILE_FLAG_OVERLAPPED, 0); if (nativeHandle != IntPtr.Zero) break; if (Marshal.GetLastWin32Error() != ERROR_PIPE_BUSY) { throw new Win32Exception(Marshal.GetLastWin32Error(), "Error opening pipe"); } LowResolutionStopwatch sw = LowResolutionStopwatch.StartNew(); bool success = NativeMethods.WaitNamedPipe(path, timeout); sw.Stop(); if (!success) { if (timeout < sw.ElapsedMilliseconds || Marshal.GetLastWin32Error() == ERROR_SEM_TIMEOUT) { throw new TimeoutException("Timeout waiting for named pipe"); } else { throw new Win32Exception(Marshal.GetLastWin32Error(), "Error waiting for pipe"); } } timeout -= (uint)sw.ElapsedMilliseconds; } handle = new SafeFileHandle(nativeHandle, true); fileStream = new FileStream(handle, mode, 4096, true); }