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Re: 01/02: Re-implement (ice-9 streams) in terms of (srfi srfi-41)
From: |
Mark H Weaver |
Subject: |
Re: 01/02: Re-implement (ice-9 streams) in terms of (srfi srfi-41) |
Date: |
Tue, 10 Mar 2015 22:58:00 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) |
Andy Wingo <address@hidden> writes:
> wingo pushed a commit to branch master
> in repository guile.
>
> commit aead655a45e689b332cfd148ecbb6d764e2c8eb8
> Author: Andy Wingo <address@hidden>
> 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
- Re: 01/02: Re-implement (ice-9 streams) in terms of (srfi srfi-41),
Mark H Weaver <=