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  • Florian Fischer's avatar
    96a846a1
    add semaphore using futex_waitv(2) supporting notify_specific · 96a846a1
    Florian Fischer authored 
    The SpuriousFutex2Semaphore is able to notify a specific worker
by using two futexes two wait on.

One working like a normal semaphore used for global non specific
notifications via notify() and notify_many().

And a second one per worker which is based on a SleeperState.
To notify a specific worker we change its SleeperState to Notified
and call FUTEX_WAKE if needed.
    96a846a1
    History
    add semaphore using futex_waitv(2) supporting notify_specific
    Florian Fischer authored 
    The SpuriousFutex2Semaphore is able to notify a specific worker
by using two futexes two wait on.

One working like a normal semaphore used for global non specific
notifications via notify() and notify_many().

And a second one per worker which is based on a SleeperState.
To notify a specific worker we change its SleeperState to Notified
and call FUTEX_WAKE if needed.
.gitlab-ci.yml 7.73 KiB