From: nobu.nokada@...
Date: 2005-02-27T18:52:23+09:00
Subject: Re: assignments and thread safety

Hi,

At Sun, 27 Feb 2005 17:43:47 +0900,
Yohanes Santoso wrote in [ruby-talk:132474]:
> > Is "$a ||= 1" thread safe? I'd guess so, as "||=" is one piece of
> 
> It is not guaranteed to be thread-safe, although in current official
> ruby vm it is 'atomic'.

It is impossilbe.

What do you expect for:

  $a ||= very.long.operation?

-- 
Nobu Nakada