Re: JDK version

Wim

Thanks for the feedback.


Quoting [email protected]:

> Hello Kenneth,
> 
> I remembered Patrick asking this upgrade, but not from the point of using 
> 'new' technologies like nio, I think. Rather to cleanout 1.3 specific code 
> and integrating new APIs. Probably Swing related APIs most of the times.

Ahhh.  Boy misunderstood that then.

> 
> As I understood NIO it mostly helps for doing async io indeed but also 
> allow better scalable IO. This is however more server oriented than this 
> client side project is. 

Yes correct the same thing as I thought.

>So this would not directly benefit us. However a 
> lot of the multithreading things that are in the code base right, would be 
> gone. You wouldn't have to start a comm-thread for every emulator but use 
> one thread on a channel as a switcher. As you mostly use one emulator 
> session at the time, this wouldn't pose performance problems and do the 
> same thing with less resources.

Well this is what I have been thinking about when using asynchronous but could
not see the benefit of the single thread issue.  I say this because all the
emulator instances can interact at different times not just in one and only one.

For instance I have a query running on one terminal and it updates the screen
while I am on another terminal waiting for the other to finish.  I can still
work on the other terminals and the interaction is still going on in the others.
 There are also timing marks that are sent and heartbeat-keepalives that still
have to be used between the other terminals as well.

I apoligize for my blindnes for all those out there that understand the
asynchronous better than I do but do not see how to handle this situation in the
channel switching code.  Will this work?  If it will then it is an option for me
to continue with.  I would really hate to tear all of that code apart again just
to find out it will not work.  Like I said have only used the asynchronous in a
small server part but my mind will not wrap around putting this to use on the
client side.

Maybe I am not seeing the forest for the trees in front.

Thanks for the feedback Wim.

Regards

Kenneth

> 
> HTH,
> Wim.
> 
> 
> 
> 
> 
> Kenneth Pouncey <[email protected]> 
> Sent by: [email protected]
> 28/06/2005 11:44
> Please respond to
> [email protected]
> 
> 
> To
> [email protected]
> cc
> 
> Subject
> [Tn5250j-general] JDK version
> 
> 
> 
> 
> 
> 
> 
> 
> Hello all 
> 
> I remember a post, from Patrick I think, that was asking to move the 
> emulator up
> to 1.4 and use some of the features for those greater than 1.3.
> 
> I am assuming that would mean to use the NIO streams, channels and the 
> such correct?
> 
> If that is the case what would using the NIO help us achieve that can not 
> be
> done now?  Would it be better?  What would be the goal?
> 
> I ask because after having used the NIO in a couple of small projects it 
> really
> only helps for asynchronous correct?  We really use synchronous on the 
> client
> side and really do not see any speed enhancment or anything like that when 
> using
> the synchronous model.
> 
> If anyone suggests the asynchronous model for doing this could they tell 
> me why
> that would help.  I do not see it but am open to learning the benefits and 
> the
> coding if it will help us reach a goal.
> 
> Regards
> 
> Kenneth
> 
> 
> 
> 
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