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From: Rob Browning <rlb@defaultvalue.org>
Cc: Carl Witty <cwitty@newtonlabs.com>,
	guile-devel@gnu.org, Marius Vollmer <m.vollmer@ping.de>
Subject: Re: scm_i_fraction_reduce thread safety
Date: Thu, 29 Jan 2004 14:32:43 -0600	[thread overview]
Message-ID: <87ptd2v6l0.fsf@raven.i.defaultvalue.org> (raw)
In-Reply-To: <87ekti7dka.fsf@zagadka.ping.de> (Marius Vollmer's message of "Thu, 29 Jan 2004 20:35:49 +0100")

Marius Vollmer <mvo@zagadka.de> writes:

> I don't have one ready, but I do very much want to have one before
> 1.8.  I need to decide for myself whether I would want to go for
> full concurrency or for restricting us to a one-thread-at-a-time
> model.
>
> Full concurrency is not a nice-model to program for,
> one-thread-at-a-time wont be able to take advantage of multiple
> processors.

Though I can't actually say *how* we'd do it, another conceptual
arrangement might be to allow an interpreter per-posix-thread.  It's
certainly not as transparent as full concurrency, and unless there
were some reasonable way to have all the interpreters share a heap/GC
without heading right back into the problems related to
full-concurrency, then people would have to structure their solutions
to explicitly pass data between interpreters.

Again, though, I haven't thought about this enough to have any real
idea if this is even remotely feasible.

-- 
Rob Browning
rlb @defaultvalue.org and @debian.org; previously @cs.utexas.edu
GPG starting 2002-11-03 = 14DD 432F AE39 534D B592  F9A0 25C8 D377 8C7E 73A4


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  reply	other threads:[~2004-01-29 20:32 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-11 11:43 scm_i_fraction_reduce thread safety Bill Schottstaedt
2003-12-11 19:19 ` Carl Witty
2003-12-12 12:11   ` Bill Schottstaedt
2003-12-12 15:04   ` Paul Jarc
2003-12-12 23:23   ` Kevin Ryde
2004-01-10 22:38     ` Marius Vollmer
2004-01-10 23:29       ` Kevin Ryde
2004-01-11  1:31         ` Marius Vollmer
2004-01-12  0:51           ` Kevin Ryde
2004-01-12  5:22             ` Richard Todd
2004-01-14 21:09               ` Kevin Ryde
2004-01-21  0:03               ` Marius Vollmer
2004-01-21  0:00             ` Marius Vollmer
2004-01-21  3:11               ` Carl Witty
2004-01-21 21:06                 ` Marius Vollmer
2004-01-27 22:15                 ` Dirk Herrmann
2004-01-27 23:24                   ` Rob Browning
2004-01-29 19:35                     ` Marius Vollmer
2004-01-29 20:32                       ` Rob Browning [this message]
2004-01-30 14:45                       ` Mikael Djurfeldt
2004-02-01 18:49                         ` Andy Wingo
  -- strict thread matches above, loose matches on Subject: below --
2003-12-09 20:39 Kevin Ryde

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