From: Jim Weirich <jweirich@...>
Date: 2003-09-04T20:09:34+09:00
Subject: Re: Ruby interpreter thread safety

On Thu, 2003-09-04 at 06:45, Thomas Sondergaard wrote:
> I have a scenario where a ruby extension module starts real/os/heavy-weight
> threads that may call back to ruby. As far as I understand the ruby
> interpreter itself is not thread safe. How can I handle this thread-safety
> problem?

The general solution for any threaded code making calls to a non-thread
safe library is to do one of the following:

    (a) Make calls into the library (callbacks in your case) from 
        only a single thread.
or  (b) Serialize calls to the library by using a mutex of some type.

-- 
-- Jim Weirich       jweirich@one.net      http://onestepback.org
-----------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct, 
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)