gistfile1.rb

# Add to spec/spec_helper.rb, within Rspec.configure block:
#config.before(:each) do
#  DeferredGarbageCollection.start
#end 
#config.after(:each) do
#  DeferredGarbageCollection.reconsider
#end 


class DeferredGarbageCollection

  DEFERRED_GC_THRESHOLD = (ENV['DEFER_GC'] || 4.0).to_f

  @@last_gc_run = Time.now

  def self.start
    GC.disable if DEFERRED_GC_THRESHOLD > 0 
  end 

  def self.reconsider
    if DEFERRED_GC_THRESHOLD > 0 && Time.now - @@last_gc_run >= DEFERRED_GC_THRESHOLD
      GC.enable
      GC.start
      GC.disable
      @@last_gc_run = Time.now
    end 
  end 

end