From: Eric Hodel <drbrain@...7.net>
Date: 2005-11-16T08:12:31+09:00
Subject: Re: DRb Crashing

On Nov 15, 2005, at 12:52 PM, James Edward Gray II wrote:

> If I launch this server:
>
> #!/usr/local/bin/ruby
>
> require "drb"
> require "rinda/tuplespace"
>
> tuplespace = Rinda::TupleSpace.new
> DRb.start_service("druby://localhost:61676", tuplespace)
>
> loop do
>   nums    = Array.new(rand(9) + 2) { rand(10) + 1 }
>   ops     = Array.new(nums.size - 1) { %w{+ - * /}[rand(4)] }
>   problem = nums.zip(ops).flatten.compact.join(" ")
>
>   tuplespace.write(["Problem", problem])
>   puts tuplespace.take(["Result", String]).last
> end
>
> __END__
>
> Then run this client:
>
> #!/usr/local/bin/ruby -w
>
> require "drb"
> require "rinda/tuplespace"
>
> DRb.start_service
> tuplespace = Rinda::TupleSpaceProxy.new(
>   DRbObject.new_with_uri("druby://localhost:61676")
> )
>
> while problem = tuplespace.take(["Problem", %r{^\d+(?: [-+*/] \d+)+ 
> $}])
>   tuplespace.write(["Result", "#{problem.last} = #{eval  
> problem.last}"])
> end
>
> __END__
>
> The client crashes, generally within a few seconds.  Adding a sleep  
> inside the server loop seems to resolve the issue.

With what error?

> Anyone know why?

I've had better luck with these kinds of errors by placing the  
TupleSpace in its own process.

-- 
Eric Hodel - drbrain@segment7.net - http://segment7.net
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