Cosmos/source/Cosmos.Debug.Common/DebugConnectorPipeServer.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Text;
using System.Threading;

namespace Cosmos.Debug.Common
{
    /// <summary>Use a named pipe server to implement wire transfer protocol between a Debug Stub
    /// hosted in a debugged Cosmos Kernel and our Debug Engine hosted in Visual Studio.
    /// Both VMware and Bochs use a pipe to expose guest serial ports to the host.</summary>
    public class DebugConnectorPipeServer: DebugConnectorStream
    {
        // private AutoResetEvent mWaitConnectEvent = new AutoResetEvent(false);
        private NamedPipeServerStream mPipe;

        public const string DefaultCosmosPipeName = "Cosmos\\Serial";

        public DebugConnectorPipeServer(string aName)
        {
            mPipe = new NamedPipeServerStream(aName, PipeDirection.InOut, 1, PipeTransmissionMode.Byte,
                                              PipeOptions.None);
            Start();
        }

        protected override void InitializeBackground()
        {
            mPipe.WaitForConnection();
            mStream = mPipe;
        }

        public void DoWaitForConnection(IAsyncResult aResult)
        {
            var xPipe = (NamedPipeServerStream)aResult.AsyncState;
            xPipe.EndWaitForConnection(aResult);
            // mWaitConnectEvent.Set();
            Start(xPipe);
        }

        protected override bool GetIsConnectedToDebugStub()
        {
            return mPipe.IsConnected;
        }
    }
}