Priority need not be propagated to readers as they will not block other readers. Most likely, you only need to propagate to the writer to avoid priority inversron.
regards -kamal On 1/13/06, prime <[EMAIL PROTECTED]> wrote: > > Hi hackers, > I have a question about how priority propagation works on > read/write lock.On locks that have only one owner at a determinate > moment,we can simply propagate the priority to the owner of lock,but > read/write lock may have many owners at some time,so how can we know > who are the owners? > I browse the OpenSolaris' read/write lock implementation,and find > that, it simply treats the owner of the lock as NULL when readers own > the read/write lock.In this way,we can not propagate our priority to > all threads that block us. > > Thanks very much. > -- > Three passions, simple but overwhelmingly strong, have governed my life: > the longing for love, the search for knowledge, and unbearable pity for > the suffering of mankind. > ---------Bertrand Russell > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
