From: Andy Gimblett <A.M.Gimblett@...>
Date: 2006-04-22T00:34:39+09:00
Subject: Re: Synchronized object

On Fri, Apr 21, 2006 at 11:47:56PM +0900, Kroeger, Simon (ext) wrote:
> Dear ruby-talk,
> 
> is there a nice, concise way to lock each and every method against
> all other methods of an object?
> 
> To elaborate: I want to make sure that only one method of a specific
> object (not class) can run at a each point in time regardless of how
> many threads are using this object.
> 
> I would hope there is module i just have to include in my class
> definition.

If you want something like you get in Java with the "synchronized"
keyword, that's a monitor, and the standard library includes
(the not terribly well documented) monitor.rb:

http://www.ruby-doc.org/stdlib/libdoc/monitor/rdoc/

(also http://en.wikipedia.org/wiki/Monitor_%28synchronization%29 )

Whether it's nice or concise I don't know - it's certainly not a
"one-liner" way to achieve what you want but it might get you a long
way along the road.  If you use it, I'd personally be interested in
how you got on.

(Caveat: I haven't used this, I just saw "synchronized object" in your
subject line, thought "monitor", and searched the web for "ruby
monitor synchronization" which led me to this info.)

Hope this helps,

-Andy

-- 
Andy Gimblett
Computer Science Department
University of Wales Swansea
http://www.cs.swan.ac.uk/~csandy/