From: Eleanor McHugh <eleanor@...>
Date: 2009-04-02T17:27:04+09:00
Subject: Re: Nilling for GC

On 2 Apr 2009, at 08:19, Paganoni wrote:
> Hi, I've read that
> http://whytheluckystiff.net/articles/theFullyUpturnedBin.html.
> I have a background script that runs continuously and threads some  
> tasks
> on demand. I keep track of the launched tasks but, by keeping those
> tracks, I certainly prevent tasks classes instances and threads
> instances to be discarded by the garbage collector.
>
> Data are stored like that :
>
> @workers[:one_category] = []
> @workers[:one_category] << {:started_at => Time.now, :thread => th}
>
> So, I'm trying to setup a cleaner that would nil old references but  
> I'm
> lost in maps :
>
> @semaphore.synchronize do
> @workers.map{|k,v| v.map{|worker| (Time.now - worker[:started_at] > 5
> && worker[:thread].status == false) ? (cleaned +=1; nil) : worker}}
> end

You could write something like:

	def thread_dead? worker
		(Time.now - worker[:started_at] > 5) && (worker[:thread].status ==  
false)
	end

	@semaphore.synchronize do
		hs.delete_if do |k, v|
			v.map! { |worker| thread_dead?(worker) ? (cleaned += 1; nil) :  
worker }.compact!
			v.empty?
		end
	end


Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net
----
raise ArgumentError unless @reality.responds_to? :reason