lkml.org 
[lkml]   [2021]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [RFC PATCH v2 00/13] Add futex2 syscall
Date
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)
\
 
 \ /
  Last update: 2021-03-08 12:13    [W:1.201 / U:0.488 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site