From: Ethan Gardener <eekee57@fastmail.fm>
To: 9fans@9fans.net
Subject: Re: [9fans] A heartfelt thanks... :-)
Date: Sat, 17 Nov 2018 17:18:43 +0000 [thread overview]
Message-ID: <1542475123.2676631.1580308920.7D7BC501@webmail.messagingengine.com> (raw)
In-Reply-To: <CAHL7psF+wk3jCfmb48N_TP5FwZrU7U8WpPi+AYOkMrNsMYWEGw@mail.gmail.com>
On Fri, Nov 16, 2018, at 11:35 PM, Giacomo Tesio wrote:
> Il giorno ven 16 nov 2018 alle ore 22:39 Ethan Gardener
> <eekee57@fastmail.fm> ha scritto:
> > Please forgive my laziness in not reading the code, but how do you actually implement sleep? Does the process read a file guaranteed to block forever, or what?
>
> No problem. Actually sleep is very short:
> https://github.com/JehanneOS/jehanne/blob/master/sys/src/lib/c/9sys/sleep.c#L23
>
> The blocking system call used in sleep is rendezvous that, in Jehanne,
> can never occur at tag ((void*)~0).
A rendevous with nothing! That's neat.
Does C require casts for void pointer? The casts in the rendevous line make it hard to read.
prev parent reply other threads:[~2018-11-17 17:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-06 3:17 Giacomo Tesio
2017-01-06 9:34 ` Anthony Martin
2017-01-06 19:42 ` Giacomo Tesio
2018-11-16 2:03 ` Giacomo Tesio
2018-11-16 21:34 ` Ethan Gardener
2018-11-16 23:35 ` Giacomo Tesio
2018-11-17 17:18 ` Ethan Gardener [this message]
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