From: Andy Wingo <wingo@pobox.com>
To: ludo@gnu.org (Ludovic Courtès)
Cc: guile-devel@gnu.org
Subject: Re: Using define in multiple threads?
Date: Mon, 17 Nov 2008 21:45:44 +0100 [thread overview]
Message-ID: <m34p2684jr.fsf@pobox.com> (raw)
In-Reply-To: <87od0ee6yl.fsf@gnu.org> ("Ludovic Courtès"'s message of "Mon, 17 Nov 2008 15:57:06 +0100")
Hello!
On Mon 17 Nov 2008 15:57, ludo@gnu.org (Ludovic Courtès) writes:
> Han-Wen Nienhuys <hanwen@xs4all.nl> writes:
>
>> Linas Vepstas escreveu:
>>> Is it "safe" or "legal" to use define in multiple threads?
>
> Besides, as Linas noted, the hash table implementation isn't
> thread-safe, which makes it "unsafe" to `define' in parallel.
Ah, this is why, then. I was baffled.
IMO this is a bug; Guile can claim that "wierd behavior is expected"
when using a data structure from multiple threads in without locking,
but in this case the data structure is only being used implicitly.
Modules should contain a lock that is taken when they are mutated.
This isn't the first time I've wanted a functional hash table
implementation...
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2008-11-17 20:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-16 22:27 Using define in multiple threads? Linas Vepstas
2008-11-17 13:18 ` Han-Wen Nienhuys
2008-11-17 14:57 ` Ludovic Courtès
2008-11-17 20:45 ` Andy Wingo [this message]
2008-11-18 10:20 ` Ludovic Courtès
2008-11-19 23:36 ` Neil Jerram
2008-11-19 23:45 ` Andy Wingo
2008-11-20 8:33 ` Ludovic Courtès
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