4 commits

Author	SHA1	Message	Date
Sergey Bugaev	65b0642dd0	LibC+LibPthread: Use FUTEX_PRIVATE_FLAG in more places ... Performance go brrrrr	2021-07-07 17:08:40 +02:00
Sergey Bugaev	5aa629717e	LibPthread: Fix some assertions	2021-07-06 17:25:34 +02:00
Sergey Bugaev	78f5c4a4c2	LibPthread: Fix ordering ... It would be enough to use relaxed ordering here if it weren't for the mutex, which we also need to store and retrieve. To ensure the pthread_cond_broadcast() call sees the store, use release and acquire as appropriate. Thankfully, both of these are on the slow paths.	2021-07-06 17:25:34 +02:00
Sergey Bugaev	00d8dbe739	LibPthread: Reimplement condition variables ... This implementation features a fast path for pthread_cond_signal() and pthread_cond_broadcast() for the case there's no thread waiting, and does not exhibit the "thundering herd" issue in pthread_cond_broadcast(). Fixes https://github.com/SerenityOS/serenity/issues/8432	2021-07-05 20:26:01 +02:00