/// <summary>
/// Run one pass of the main loop.
/// </summary>
private void RunPass()
{
// Wait for a command.
while (m_commandQueue.Count == 0) Block(new SelectSockets());
// Get the next command.
KmodThreadCommand command = m_commandQueue.Dequeue();
// Send the command.
m_transport.sendMsg(command.Msg);
while (true)
{
m_transport.doXfer();
if (!m_transport.isSending) break;
SelectSockets select = new SelectSockets();
select.AddWrite(m_kmodSock);
Block(select);
}
// We're done.
if (!command.HaveResultFlag) return;
// Wait for the results or the next command.
bool firstFlag = true;
while (m_commandQueue.Count == 0)
{
if (!m_transport.isReceiving) m_transport.beginRecv();
m_transport.doXfer();
// Push the next result.
if (m_transport.doneReceiving)
{
lock (Mon)
{
m_elementQueue.Enqueue(m_transport.getRecv());
Monitor.Pulse(Mon);
}
// Send the notification that results are ready for this command.
if (firstFlag)
{
firstFlag = false;
PostToUI(new KmodThreadNotif(m_broker, command));
}
}
// Wait for the next result or the next command.
else
{
SelectSockets select = new SelectSockets();
select.AddRead(m_kmodSock);
Block(select);
}
}
}
/// <summary>
/// Check if we are connected.
/// </summary>
public override void BeforeSelectConnecting(SelectSockets selectSockets)
{
// The socket is connected.
if (Sock.Poll(0, SelectMode.SelectWrite))
{
Status = EAnpThreadChannelStatus.Handshake;
selectSockets.LowerTimeout(0);
}
// The connection has failed.
else if (Sock.Poll(0, SelectMode.SelectError))
{
throw new Exception("the connection to the KWM could not be established");
}
// Add the socket in the write set and wait forever.
else
{
selectSockets.AddWrite(Sock);
}
}
/// <summary>
/// Prepare to send handshake data.
/// </summary>
public override void BeforeSelectHandshake(SelectSockets selectSockets)
{
selectSockets.AddWrite(Sock);
}
/// <summary>
/// Update the select set specified with the socket of the transport.
/// </summary>
public void UpdateSelect(SelectSockets selectSocket)
{
Debug.Assert(IsReceiving || DoneReceiving);
if (IsSending) selectSocket.AddWrite(sock);
if (IsReceiving && !DoneReceiving) selectSocket.AddRead(sock);
}
