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From: Ethan Gardener <eekee57@fastmail.fm>
To: 9fans@9fans.net
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Date: Sat, 17 Nov 2018 17:18:43 +0000
Subject: Re: [9fans] A heartfelt thanks... :-)
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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.