[issue41668] Expose eventfd for high-performance event notifier in Linux

[Pablo Galindo Salgado]

Pablo Galindo Salgado  added the comment:

Indeed it is. CLosing in favour of bpo-41001

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resolution:  -> duplicate
stage: patch review -> resolved
status: open -> closed

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[issue41668] Expose eventfd for high-performance event notifier in Linux

[Zackery Spytz]

Zackery Spytz  added the comment:

I think this is a duplicate of bpo-41001.

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nosy: +ZackerySpytz

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[issue41668] Expose eventfd for high-performance event notifier in Linux

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado :


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keywords: +patch
pull_requests: +21122
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/22022

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[issue41668] Expose eventfd for high-performance event notifier in Linux

[Pablo Galindo Salgado]

New submission from Pablo Galindo Salgado :

The eventfd system calls can allow us to implement some Linux-specific high 
performance version of some event notifier abstractions in the standard 
library. 

eventfd() creates an "eventfd object" that can be used as an event wait/notify 
mechanism by user-space applications. The object contains an
unsigned 64-bit integer counter that is maintained by the kernel. This acts as 
a file descriptor that can be used by the usual suspects 
(read/write/poll/close...).

The advantage here is that the kernel maintains the counter and if used in 
conjunction with poll/epoll, it allows for a high-performance and
scallabe event notification system.

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components: IO, Library (Lib)
messages: 376130
nosy: pablogsal
priority: normal
severity: normal
status: open
title: Expose eventfd for high-performance event notifier in Linux
versions: Python 3.10

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