From: Andy Wingo <wingo@igalia.com>
To: Nala Ginrut <nalaginrut@gmail.com>
Cc: "Ludovic Courtès" <ludo@gnu.org>, 30066@debbugs.gnu.org
Subject: bug#30066: 'get-bytevector-some' returns only 1 byte from unbuffered ports
Date: Wed, 10 Jan 2018 18:26:06 +0100 [thread overview]
Message-ID: <87bmi1pqvl.fsf@igalia.com> (raw)
In-Reply-To: <CAPjoZoeUvrAtNQLB7HxL0oXTQoK4p0v3cYX2A8f8aVMaG640FQ@mail.gmail.com> (Nala Ginrut's message of "Thu, 11 Jan 2018 00:58:31 +0800")
On Wed 10 Jan 2018 17:58, Nala Ginrut <nalaginrut@gmail.com> writes:
> hi Andy and Ludo!
>
> What if developers enabled suspendable-ports and set the port to non-blocking?
> For example, in the non-blocking asynchronous server, I registered
> read/write waiter for suspendable-ports. And save
> delimited-continuations then yield the current task.
> In this situation, get-bytevector-n! will read n bytes with several
> times yielding by the registered read-writer, from the caller's
> perspective, get-bytevector-n! will return n bytes finally no matter
> how many times it's yielded.
> But how about the get-bytevector-some? Should it block just once and
> return the first time read m bytes then return?
I think this is right. At most one block. FWIW we'd need to add
support for get-bytevector-some to (ice-9 suspendable-ports) to get this
to work.
Andy
next prev parent reply other threads:[~2018-01-10 17:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-10 15:02 bug#30066: 'get-bytevector-some' returns only 1 byte from unbuffered ports Ludovic Courtès
2018-01-10 15:59 ` Ludovic Courtès
2018-01-10 16:32 ` Andy Wingo
2018-01-10 16:58 ` Nala Ginrut
2018-01-10 17:26 ` Andy Wingo [this message]
2018-01-10 17:43 ` Nala Ginrut
2018-01-11 14:34 ` Ludovic Courtès
2018-01-11 19:55 ` Mark H Weaver
2018-01-11 21:02 ` Ludovic Courtès
2018-01-11 21:55 ` Mark H Weaver
2018-01-12 9:01 ` Andy Wingo
2018-01-12 10:15 ` Ludovic Courtès
2018-01-12 10:33 ` Andy Wingo
2018-01-13 20:53 ` Ludovic Courtès
2018-02-16 13:19 ` Ludovic Courtès
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