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From: Andy Wingo <wingo@pobox.com>
To: Takashi Kato <ktakashi19@gmail.com>
Cc: 22767@debbugs.gnu.org
Subject: bug#22767: Thread-sleep! doesn't sleep
Date: Sun, 07 Aug 2016 23:32:26 +0200	[thread overview]
Message-ID: <87twewnu39.fsf@pobox.com> (raw)
In-Reply-To: <CACcjVL3kCz3KAadnR05q6iYK4YczCbbcqmQL5C5BmFigs4mwwg@mail.gmail.com> (Takashi Kato's message of "Mon, 22 Feb 2016 12:37:56 +0100")

Hi Takashi,

Thank you for the report.

On Mon 22 Feb 2016 12:37, Takashi Kato <ktakashi19@gmail.com> writes:

> I think I've found a bug of thread-sleep! defined in SRFI-18 library.
> The file module/srfi/srfi-18.scm line 233 subtract current time from
> given timeout argument but this results negative number most of the
> case. I think this line should simply return timeout as it is.

You are right.  Guile's documentation indicates that the timeout is an
absolute time as a SRFI-18 time object, but the SRFI itself says that
timeouts are either:

   * a time object represents an absolute point in time

   * an exact or inexact real number represents a relative time in
     seconds from the moment the primitive was called

So I guess when passed a number, that's not to be interpreted as an
absolute time from the epoch, but rather a relative timeout.  We need to
update our documentation and tests, it seems, and issue a prominent NEWS
entry...

Andy





      reply	other threads:[~2016-08-07 21:32 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-22 11:37 bug#22767: Thread-sleep! doesn't sleep Takashi Kato
2016-08-07 21:32 ` Andy Wingo [this message]

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