/// <summary>
/// 创建输入输入重定向通道
/// </summary>
/// <param name="parentHandle">父进程句柄</param>
/// <param name="childHandle">子进程句柄</param>
/// <param name="parentInputs">是否输入</param>
private void createPipe(out SafeFileHandle parentHandle, out SafeFileHandle childHandle, bool parentInputs)
{
kernel32.securityAttributes lpPipeAttributes = new kernel32.securityAttributes();
lpPipeAttributes.IsInheritHandle = true;
SafeFileHandle hWritePipe = null;
try
{
if (parentInputs)
{
createPipeWithSecurityAttributes(out childHandle, out hWritePipe, lpPipeAttributes, 0);
}
else
{
createPipeWithSecurityAttributes(out hWritePipe, out childHandle, lpPipeAttributes, 0);
}
if (!kernel32.DuplicateHandle(new HandleRef(this, kernel32.GetCurrentProcess()), hWritePipe, new HandleRef(this, kernel32.GetCurrentProcess()), out parentHandle, 0, false, kernel32.duplicateHandleOptions.DUPLICATE_SAME_ACCESS))
{
throw new Win32Exception();
}
}
finally
{
if ((hWritePipe != null) && !hWritePipe.IsInvalid)
{
hWritePipe.Close();
}
}
}
/// <summary>
/// 创建通道
/// </summary>
/// <param name="hReadPipe">读取通道</param>
/// <param name="hWritePipe">写入通道</param>
/// <param name="lpPipeAttributes">安全属性</param>
/// <param name="nSize">缓存区字节数,0表示默认</param>
private static void createPipeWithSecurityAttributes(out SafeFileHandle hReadPipe, out SafeFileHandle hWritePipe, kernel32.securityAttributes lpPipeAttributes, int nSize)
{
if ((!kernel32.CreatePipe(out hReadPipe, out hWritePipe, lpPipeAttributes, nSize) || hReadPipe.IsInvalid) || hWritePipe.IsInvalid)
{
throw new Win32Exception();
}
}