3 ms·

In practice it's not desirable to go without an explicit wake feature, we need some way to know that now it's likely to succeed. The mechanism needn't be 100% r

In practice it's not desirable to go without an explicit wake feature, we need some way to know that now it's likely to succeed. The mechanism needn't be 100% reliable but "Always try again" is essentially exactly as useless as blocking.

duped 2y ago
No it's not, that's the whole point of using polling.
loeg 2y ago
I work on a widely deployed (~11,000 servers and growing) piece of software that does not use any OS sleep/wake primitive for our MPSC queues -- just polling. It works really well with the right overall design.