From: Wejn <lists+rubytalk@...>
Date: 2002-07-12T19:29:39+09:00
Subject: Destructors in Ruby

Hi all,
  I have following class:

class Foo
	def initialize
		@locked = false
	end

	def lock
		return if @locked
		# Set up exclusive-write lock
		@locked = true
	end

	def do_something
		raise RuntimeError, "Not locked" unless @locked
		# Do something if locked
	end

	def unlock
		return unless @locked
		# Free that lock
		@locked = false
	end
end

Is there any way I can ensure that 'unlock' will be called at the end of
instance lifetime (before GC will purge it out of mem)? I need this
feature because I can't leave the external resource locked and I can't
trust to other code to release (unlock) it correctly.

Thanks in advance,
                      W.
-- 
              Wejn <lists+rubytalk(at)box.cz>
(svamberk.net's Linux section, fi.muni.cz student, linuxfan)
>>>         Bored?  Want hours of entertainment?         <<<
>>>           Just set the initdefault to 6!             <<<