From: Mark H Weaver <mhw@netris.org>
To: Andy Wingo <wingo@pobox.com>
Cc: guile-devel@gnu.org
Subject: Re: 01/02: Re-implement (ice-9 streams) in terms of (srfi srfi-41)
Date: Tue, 10 Mar 2015 22:58:00 -0400 [thread overview]
Message-ID: <8761a81brb.fsf@netris.org> (raw)
In-Reply-To: <E1YUxAA-0001qR-DN@vcs.savannah.gnu.org> (Andy Wingo's message of "Mon, 09 Mar 2015 12:52:02 +0000")
Andy Wingo <wingo@pobox.com> writes:
> wingo pushed a commit to branch master
> in repository guile.
>
> commit aead655a45e689b332cfd148ecbb6d764e2c8eb8
> Author: Andy Wingo <wingo-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>
> Date: Thu Mar 5 09:44:53 2015 +0100
>
> Re-implement (ice-9 streams) in terms of (srfi srfi-41)
>
> * module/ice-9/streams.scm: Re-implement in terms of SRFI-41. Passes
> tests.
I think we can't do this because (ice-9 streams) are based on native
Guile promises which provide built-in thread synchronization, whereas
SRFI-41 streams are based on SRFI-45 promises which do not include
thread synchronization.
I vaguely remember finding that SRFI-45 promises (written in pure
Scheme) performed better than native Guile promises (written in C),
presumably because of the lack of built-in thread synchronization. I
don't remember what platform I did those comparisons on.
Mark
next parent reply other threads:[~2015-03-11 2:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20150309125201.7033.46022@vcs.savannah.gnu.org>
[not found] ` <E1YUxAA-0001qR-DN@vcs.savannah.gnu.org>
2015-03-11 2:58 ` Mark H Weaver [this message]
2015-03-11 8:30 ` 01/02: Re-implement (ice-9 streams) in terms of (srfi srfi-41) Andy Wingo
2015-03-29 17:20 ` Ludovic Courtès
2015-03-29 23:54 ` Mark H Weaver
2015-03-30 8:03 ` Ludovic Courtès
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