jython-dev

[Jython-dev] select module workaround

[Wangerin, D. L <Dav...@un...>]

Hello,

I've been working on a simulation server that accepts clients over a network
and thus needs something like the python select module.  So far as I an
tell, select does not work with jython because of the limitation of the JVM.
Since the simulator will accept an undetermined number of clients, I can't
just use sockets (or at least I haven't found an easy way to do this).

Are there any existing workarounds to get the effect of using a select
module?  If possible, it should be compatible with python (but this is not a
real requirement).  Thanks, and congratulations on the progress and success
of jython!

David Wangerin...

Re: [Jython-dev] select module workaround

[Kevin B. <kb...@ca...>]

This is a case that shows the client-bias Java is trying to overcome.

You have a couple of choices for asynchronous IO in Java:

1) wait for JDK1.4: use JDK 1.4's new asynchronous IO APIs: http://java.sun.com/j2se/1.4/docs/guide/nio/index.html

2) limit scalability: use lots of threads that block on the JDK 1.0-1.3 synchronous IO methods

3) limit portability: use a native library that implements the asynchronous IO functions you need (either custom-written or one of several that are available)

:-(

kb

"Wangerin, David L" wrote:
> 
> Hello,
> 
> I've been working on a simulation server that accepts clients over a network
> and thus needs something like the python select module.  So far as I an
> tell, select does not work with jython because of the limitation of the JVM.
> Since the simulator will accept an undetermined number of clients, I can't
> just use sockets (or at least I haven't found an easy way to do this).
> 
> Are there any existing workarounds to get the effect of using a select
> module?  If possible, it should be compatible with python (but this is not a
> real requirement).  Thanks, and congratulations on the progress and success
> of jython!
> 
> David Wangerin...
> 
> _______________________________________________
> Jython-dev mailing list
> Jyt...@li...
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