Hi André, > ** The wait on multiple problem > > The use case lies in the Wine implementation of the Windows NT interface > WaitMultipleObjects. This Windows API function allows a thread to sleep > waiting on the first of a set of event sources (mutexes, timers, signal, > console input, etc) to signal. With that in mind would it be good to have some interaction with epoll (and similar calls)? Instead of having a blocked futex_waitv() waiting on an fd (maybe a generic eventfd() or a new futex2fd()) would be a better interface? Or instead introduce an IORING_OP_FUTEX2_WAITV? Then the futex_waitv logic wait in an io-wq kernel thread... I guess the io_uring way would mean we could have that in mind as future addition, which can be implemented later... metze
