From: James Edward Gray II <james@...>
Date: 2007-10-03T02:15:31+09:00
Subject: Re: Variable scope in GServer

On Oct 2, 2007, at 6:44 AM, Chris Bailey wrote:

> (Repost)
> Thank you for the correction Bertram, I've never used a mailing  
> list before and it didn't occur to me. Hopefully it's in the right  
> place now.
>
> I'm having a bit of a problem accessing variables in an instance of  
> GServer.
> What I would like to do is make a hash that is effectively global  
> to the
> current thread.
>
> -/Server.rb
> require 'gserver'
> require 'connect.rb'
>
> class TestServer < GServer
>   def initialize(port = 4000, *args)
>     super(port, *args)
>   end
>   def serve( io )
>       @test_hash = Hash.new
>       connect(io) #Defined in connect.rb
>     loop do
>       str = io.gets
>       parser(str,io)
>     end
>   end
> end
>
> The way that I'm doing it doesn't allow each thread to have it's  
> own copy of
> @test_hash and that's my problem. I need each thread to be able to  
> change
> the data stored in the hash without affecting the data stored in  
> the hash
> for all threads.

You could make test_hash a local variable and pass it as a parameter  
into the methods you need it in.

You could also build a new object to represent client state, instead  
of just using the server state object for everything.  When a new  
client connects, build the client object (passing in your Hash and IO  
objects) and call some kind of run() method on the client to handle  
everything else.

I hope that helps.

James Edward Gray II