From: Dan Zwell <dzwell@...>
Date: 2007-04-06T12:19:58+09:00
Subject: Re: newbie, hash or 2dArry + threads

I admit I didn't fully read the whole script, but I saw something that
looks wrong. A simple syntax mistake? See further down.

Zac Elston wrote:
> first, thanks for the responses, ruby really is a great language.
> 
> My delima is that I'm trying to multithread the actions and store the 
> results in a hash with the hostname as  key
> 
> to redefine the issue, for each host I need a thread and I expect a 
> result, then I'd like to be able to see the result in a 
> hash[host][result]
> 
> but I'm having trouble mixing the hash with the thread.  maybe I'm going 
> about this all wrong. (this is outputting to a rails view, which is why 
> i have "@vars"
> 
> I have
> 
>     @threads = []
>     @resulthash = Hash.new(0)
>     @hostarray.each do |host|
>         threads << Thread.new(host) do |myhost|


Here, you are resetting @resulthash. Maybe you meant:
@resulthash[myhost] = {:packages => @mypackages,
                        :result => doXMLquery(host,@mypackages)}
>         @resulthash = { :myhost => {
>         :packages => @mypackages,
>         :result => doXMLquery(host,@mypackages)} }
>         logger.info("host = " + host + ", result = " + 
> @resulthash[:myhost][:result])
>         end
>     end
> 
> @threads.each {|thr| thr.join }
> 
> logger.info("result of threads..")
> @hostarray.each do |myhost|
>         logger.info("host = " + myhost + ", result = " + 
> @resulthash[:myhost][:result])
> end
> 
>  logger output
> 
> host = hostX, result = --data returned from hostX--
> host = hostY, result = --data returned from hostY--
> result of threads..
> host = hostX, result = --data returned from hostY--
> host = hostY, result = --data returned from hostY--
> 
> I'm clearly loosing context of the [:host][:result] in the final two 
> lines.
> 
> any pointers?
> 
> thanks
> -zaq
>