From: David Laight <[email protected]>
To: "'Stefan Metzmacher'" <[email protected]>,
"André Almeida" <[email protected]>,
"Thomas Gleixner" <[email protected]>,
"Ingo Molnar" <[email protected]>,
"Peter Zijlstra" <[email protected]>,
"Darren Hart" <[email protected]>,
"[email protected]" <[email protected]>,
"Steven Rostedt" <[email protected]>,
"Sebastian Andrzej Siewior" <[email protected]>
Cc: "[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
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"[email protected]"
<[email protected]>,
"[email protected]" <[email protected]>,
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"[email protected]" <[email protected]>,
io-uring <[email protected]>
Subject: RE: [RFC PATCH v2 00/13] Add futex2 syscall
Date: Mon, 8 Mar 2021 11:11:13 +0000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
From: Stefan Metzmacher
> Sent: 07 March 2021 11:35
>
> Hi André,
> > ** The wait on multiple problem
> >
> > The use case lies in the Wine implementation of the Windows NT interface
> > WaitMultipleObjects. This Windows API function allows a thread to sleep
> > waiting on the first of a set of event sources (mutexes, timers, signal,
> > console input, etc) to signal.
They are all events.
You can only wait on either events or sockets (using select).
There is a socket api to signal an event when data arrives (etc).
There is also the insane (these days) restriction of 64 events.
> With that in mind would it be good to have some interaction with epoll (and similar calls)?
Or hook something up so that pollwakeup can kick a futex as well
as waking up poll() and adding an event to epoll().
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2021-03-08 11:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <[email protected]>
2021-03-07 11:34 ` [RFC PATCH v2 00/13] Add futex2 syscall Stefan Metzmacher
2021-03-07 11:56 ` Daurnimator
2021-03-08 11:52 ` Stefan Metzmacher
2021-03-08 11:11 ` David Laight [this message]
2021-03-08 11:55 ` Stefan Metzmacher
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