From: Nathaniel Talbott <nathaniel@...>
Date: 2004-02-25T03:47:40+09:00
Subject: Re: rehash segfault

On Feb 24, 2004, at 13:30, Yukihiro Matsumoto wrote:

> Hi,
>
> In message "rehash segfault"
>     on 04/02/25, Nathaniel Talbott <nathaniel@talbott.ws> writes:
>
> |I don't have a lot of information on this bug at this point, but
> |figured I'd throw out what I do have, and see if it's enough to jog
> |someone's brain. I'll of course continue to gather more information as
> |I'm able and present it here.
> |
> |I have code that looks like this in my application:
> |
> |   @cache = Set::new
> |   def @cache.rehash
> |     @hash.rehash
> |   end
>
> Ruby hashes are not completely thread-safe.  I knew the problem
> existed, but I couldn't fix it without significant slow-down.
> Can you isolate cache access for each threads?

Yes I can. Thanks for the definitive answer on the problem.

Is there a way to make this case fail more gracefully than a segfault? 
That would be nice for the next traveller coming along this way.

Thanks,


Nathaniel

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