| Subject | Re: [RFC PATCH v2 00/13] Add futex2 syscall | From | Zebediah Figura <> | Date | Mon, 8 Mar 2021 10:18:29 -0600 |
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On 3/3/21 6:42 PM, André Almeida wrote: > ** 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. Considering this is a primitive > synchronization operation for Windows applications, being able to quickly > signal events on the producer side, and quickly go to sleep on the > consumer side is essential for good performance of those running over Wine.
It's probably worth pointing out, for better or for worse, while this is *a* use case, it's also limited to an out-of-tree patch set/forked versions of Wine. I'm currently working on a different approach that should be upstreamable to Wine proper, as detailed in [1].
[1] https://lore.kernel.org/lkml/f4cc1a38-1441-62f8-47e4-0c67f5ad1d43@codeweavers.com/
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