From: ara howard <ara.t.howard@...>
Date: 2008-01-09T13:27:30+09:00
Subject: Re: why does this code leak?


On Jan 8, 2008, at 8:53 PM, Michael Bevilacqua-Linn wrote:

> Why are you assuming it's leaking without giving the GC a chance to  
> run?

because i'm an idiot and pasted the wrong buffer.  here is the code:

#
# distilled behaviour from dike.rb
#
   class Object
     Methods = instance_methods.inject(Hash.new){|h, m| h.update m =>  
instance_method(m)}
   end

   class Class
     Methods = instance_methods.inject(Hash.new){|h, m| h.update m =>  
instance_method(m)}

     def new *a, &b
       object = Methods["new"].bind(self).call *a, &b
     ensure
       ObjectSpace.define_finalizer object, finalizer
     end

     def finalizer
       lambda{}
     end
   end


#
# the above makes this code leaks, but *only* Net::HTTPOK objects
#
   require "net/http"

   def leak!
     Net::HTTP.start("localhost") do |http|
       puts http.get('/').code
     end
   end

   3.times {
     puts "---"
     p ObjectSpace.each_object(Net::HTTPResponse){}
     leak!
     GC.start
   }


a @ http://codeforpeople.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama