Hello,
I am having some object lifetime issues with events in IronRuby. I think I
have a repro, so bear with me. The problem seems to be that the proc seems
to have a bunch of extra "stuff" in its execution environment.
Consider the following ruby code:
require "System.Windows.Forms"
include System::Windows::Forms
include System
class Tester
attr_reader :wc
def test
@wc = WeakReference.new(Button.new)
add_handler
end
def add_handler
# if we uncomment the following two lines out, and comment out the last
line, the Button will leak and not
# be cleaned up even though there should be no live references to it
#...@handler = lambda {|*a| puts "text changed" }
#[email protected]_changed.add @handler
@wc.target.text_changed.add lambda {|*a| puts "text changed" }
end
end
t = Tester.new
t.test
System::GC.collect
puts "wc is alive = #{t.wc.is_alive}" # this should always print false
If you uncomment the two lines indicated in add_handler, the button in the
weak reference will leak. I think that this is incorrect. The proc object
(and its associated binding) shouldn't have any live references to
@wc.target. I'm not 100% sure, but this makes it a bit harder if we want to
be able to detach the proc later.
Any thoughts?
Thanks!
Martin
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