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345 points splitbrain | 3 comments | 14 Oct 24 13:11 UTC | HN request time: 0.612s | source

1. yazzku ◴[14 Oct 24 17:04 UTC] No.41839476[source]▶

>>41837204 (OP) #

Can you not use std::condition_variable to avoid the active waiting of the signal?

replies(2): >>41840920 #>>41842565 #

2. quotemstr ◴[14 Oct 24 19:21 UTC] No.41840920[source]▶

>>41839476 (TP) #

signalfd or ppoll or a million other options

3. listeria ◴[14 Oct 24 22:07 UTC] No.41842565[source]▶

>>41839476 (TP) #

I don't know if std::condition_variable is async-signal safe, but an easy fix is to replace the sleeping with pause(2). There's also sigwait(3), which wouldn't need a signal handler.

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