chenBright opened a new pull request, #3697: URL: https://github.com/apache/brpc/pull/3697
### What problem does this PR solve? Issue Number: resolve Problem Summary: `bthread_sem_post()` and `bthread_sem_post_n()` used relaxed ordering when adding permits. This did not publish preceding writes to consumers that successfully acquired permits without blocking in `butex_wait()`, potentially causing data races on shared payloads. ### What is changed and the side effects? Changed: Use `memory_order_release` in the shared post implementation, pairing with successful acquire CAS operations in `wait`, `timedwait`, and `trywait`. Side effects: - Performance effects: - Breaking backward compatibility: --- ### Check List: - Please make sure your changes are compilable. - When providing us with a new feature, it is best to add related tests. - Please follow [Contributor Covenant Code of Conduct](https://github.com/apache/brpc/blob/master/CODE_OF_CONDUCT.md). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
