pub(super) fn wait()Expand description
Wait for atomic FD to change value from FD_ONGOING_INIT to something else.
Futex syscall with FUTEX_WAIT op puts the current thread to sleep
until futex syscall with FUTEX_WAKE op gets executed for FD.
For more information read: https://www.man7.org/linux/man-pages/man2/futex.2.html