//
//
//
/// <summary>
/// Here, we already have the event object (perhaps someone else created it). Before
/// triggering event, we mark that we are the senders, but note, if someone else created
/// it, "CustomEventCreator" could be a different object (say, the object that requested
/// something from this book).
/// </summary>
protected void OnInstrumentChange(InstrumentChangeArgs args)
{
args.Sender = this; // update the sender before triggering event
if (this.InstrumentChanged != null)
{
InstrumentChanged(this, args);
}
}//OnInstrumentChange()
}//LogBookState().
//
//
//
#endregion//Private Methods
#region Event Processing for Books
// *****************************************************************
// **** Event Processing for Books ****
// *****************************************************************
//
//
//
//
//
//
// **** ProcessBookEvents() ****
//
/// <summary>
/// Once an event in the queue is determined to be a market change event, or
/// any event changing the "market book" of an instrument, this method is
/// called to update the market instrument books.
/// Called by hub thread only.
/// </summary>
/// <param name="eArgList">A list of market change events.</param>
protected void ProcessBookEvents(List <EventArgs> eArgList)
{
int updateBookID = EnterWriteLock(); // step 0.0
BringBookUpToDate(updateBookID); // Bring this book up to current date. // step 1, 2, not 3, 4, and 5.
// Process new events by calling super class (since this depends on particular exchange)!
InstrumentChangeArgs eventArgs = ProcessBookEventsForABook(updateBookID, eArgList); // step 3
// Finalize book that was updated.
ExitWriteLock(updateBookID);
m_CurrentBook = updateBookID; // Now publish book as current book! // step 6.0
//this.LogBookState(string.Empty);
/*
* Book aBook;
* if (TryEnterReadBook(out aBook) )
* {
* if (Log.BeginEntry(LogLevel.Minor, "ProcessBookEvents: "))
* {
* foreach (int id in updatedInstrList)
* {
* Market mkt = aBook.Instruments[id];
* Log.AppendEntry(mkt.ToString());
* }
* Log.EndEntry(updatedInstrList.Count > 0);
* }
* ExitReadBook(aBook);
* }
*/
// Trigger events for updated instruments.
if (eventArgs != null)
{
eventArgs.Sender = this;
OnInstrumentChange(eventArgs); // step 7.0
}
}//end HubEventHandler().
