Re: [Quickfix-users] FIX::SynchronizedApplication thread usage

[Mark T. K. <mke...@di...>]

i'm talking about the threads within the process.  i
thought you'd have:

  1) the initial 'main' thread, sitting in a loop
     polling for the end of the sesion.

  2) one to dequeue (or transmit) messages (so that
     processing and reception/transmission are not
     synchronous).

  3) one to deliver callbacks.

but you're saying that the thread that receives a message also delivers
the callback?  so that if the callback blocks, messages won't be
received/transmitted until the callback returns?

is there an architecture document floating around somewhere?
e.g. i made a pass through the online doc and don't recall
discovering that SocketInitiator guaranteed synchronized
access for its callbacks?

/mark

Oren Miller wrote:
> QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/html/index.html
> QuickFIX Support: http://www.quickfixengine.org/services.html
> 
> I'm not really sure I follow.  There is only one thread within the  
> loop.  As for total threads within the application, there are two at  
> this point.  One is being occupied by your loop, the other by the  
> SocketInitiator.
> 
> Also, there isn't any sense using the SynchronizedApplication in  
> conjunction with the SocketInitiator.  You are guaranteed a single  
> thread to your callbacks.  All you are doing is adding overhead.
> 
> --oren
> 
> On Jul 11, 2006, at 3:55 PM, Mark T. Kennedy wrote:
> 
>> QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/ 
>> html/index.html
>> QuickFIX Support: http://www.quickfixengine.org/services.html
>>
>>
>> consider the following server initialization fragment:
>>
>>       while (s->isSessionTime ())
>>         {
>>           // poll once a minute to shut down
>>           FIX::process_sleep (60);
>>         }
>>
>> how many threads will be active within the isSessionTime
>> loop?  i'm guessing at least 3.
> 
> 
> 
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