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From: David Brown <caml-list@davidb.org>
To: Ker Lutyn <ker527mail@yahoo.com>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] atomicity guarantees for threaded code
Date: Fri, 29 Oct 2004 14:50:27 -0700	[thread overview]
Message-ID: <20041029215027.GA9504@old.davidb.org> (raw)
In-Reply-To: <20041029163907.36287.qmail@web40611.mail.yahoo.com>

On Fri, Oct 29, 2004 at 09:39:07AM -0700, Ker Lutyn wrote:

> thread 1:
> 
>     mapref := StringMap.add key value !mapref
> 
> thread 2 through thread N:
> 
>     let value = StringMap.find key !mapref
> 
> Assume only thread 1 can update the reference. Is this code safe?

As long as the reference write is atomic, which it is going to be, I would
suspect this is safe.  It probably would even be safe if multiple threads
updated the reference, but you might just drop entries.

Dave


  reply	other threads:[~2004-10-29 21:50 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-29 16:39 Ker Lutyn
2004-10-29 21:50 ` David Brown [this message]
2004-10-29 23:54   ` [Caml-list] " skaller
2004-10-30  0:32     ` David Brown
2004-10-30  1:07       ` skaller
2004-10-30  2:07         ` David Brown
2004-10-30  2:36           ` skaller

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