From: David Hansen <david.hansen@gmx.net>
To: emacs-devel@gnu.org
Subject: Re: Very interesting analysis of "the state of Emacs"
Date: Thu, 01 May 2008 00:49:52 +0200 [thread overview]
Message-ID: <874p9jhsa7.fsf@localhorst.mine.nu> (raw)
In-Reply-To: E1JrKM5-0006U3-6R@fencepost.gnu.org
On Wed, 30 Apr 2008 18:00:49 -0400 Richard M. Stallman wrote:
> If we are looking at concurrency, there is another paradigm based on
> maintaining multiple internal function call stacks which a scheduler
> can schedule in some fair fashion. I am talking of stackless Python
> implementation. You really do not have multiple threads but get
> simulated concurrency through stack switching.
>
> The idea is to get effective parallel execution for Lisp programs and
> redisplay. This doesn't mean using multiple threads at the C level.
> It means using whatever method is convenient.
I don't think we would even need a scheduler, co-routines and something
like a `yield' function seem to be perfectly fine. This would also
minimize the risk it breaks existing code (though existing code would
still block emacs, but that's a transition that can be made over time
when needed).
I would strongly oppose OS level threads. It's just to easy to fuck
things up and I think elisp should keep things simple.
There are some small languages that implement this (e.g. Lua or Scheme
(not in the standard but it's a natural use for continuations)). The
main problem I would see is emacs dynamic scope, e.g. what's the value
of a variable in one thread if another one let binds it.
David
next prev parent reply other threads:[~2008-04-30 22:49 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-29 3:19 Very interesting analysis of "the state of Emacs" Thomas Lord
2008-04-29 7:26 ` Paul Michael Reilly
2008-04-29 23:17 ` Richard M Stallman
2008-04-30 0:14 ` Thomas Lord
2008-04-30 2:21 ` Stephen Eilert
2008-04-30 3:20 ` dhruva
2008-04-30 22:00 ` Richard M Stallman
2008-04-30 22:49 ` David Hansen [this message]
2008-04-30 23:46 ` Thomas Lord
2008-05-01 7:30 ` tomas
2008-05-01 4:23 ` Jonathan Rockway
2008-05-01 6:31 ` David Hansen
2008-05-01 6:42 ` Miles Bader
2008-05-01 18:59 ` Jonathan Rockway
2008-05-02 15:36 ` Stefan Monnier
2008-05-02 16:50 ` CEDET and threads (was Re: Very interesting analysis of "the state of Emacs") Eric M. Ludlam
2008-05-03 8:09 ` Very interesting analysis of "the state of Emacs" Richard M Stallman
2008-05-03 19:24 ` Stefan Monnier
2008-05-04 9:37 ` Richard M Stallman
2008-05-04 23:23 ` buffer transactions (was Re: Very interesting analysis of "the state of Emacs") Nic
2008-05-05 15:14 ` Richard M Stallman
2008-04-30 5:12 ` Very interesting analysis of "the state of Emacs" Miles Bader
2008-04-30 14:06 ` David Kastrup
2008-04-30 15:08 ` Tom Tromey
2008-05-15 6:21 ` ERC disconnects when blocked too long (was: Very interesting analysis of "the state of Emacs") Michael Olson
2008-04-30 16:08 ` Very interesting analysis of "the state of Emacs" Thomas Lord
2008-04-30 6:24 ` Paul Michael Reilly
2008-04-30 14:12 ` Mathias Dahl
2008-04-30 22:01 ` Richard M Stallman
2008-04-30 22:56 ` Thomas Lord
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