Hi, for some work we are doing on bhyve, we need some lightweight mechanism that a kernel thread can use to wake up another user thread possibly waiting for some event.
If the recipient of the event were a kernel thread it would simply do a tsleep(chan...) and the sender would do a wakeup() or wakeup_one(). Do we have an equally simple option for a recipient that is a userspace thread using something that is already in the kernel ? Do we have some blocking syscall that ends up doing a tsleep in a predictable way ? I suppose I could create a kqueue() descriptor and instruct the kernel thread side to post an event instead of doing the wakeup, but this seems a bit more expensive on both endpoints. cheers luigi _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
