> Hi hackers, > I want to understand the current implementation of > turnstile,and meet some questions about its locks' logicality.
[snip] It's used to lock td_contested member of struct thread structure and all issues linked to it (as you can see in the source tree). It seems used in a clean way. Attilio turnstile's ``ts_blocked" field is protected by both > ``td_contested" lock and its turnstile_chain lock, but > I think its turnstile_chain lock is enough,because we > allways get the turnstile_chain lock before our manipulation > on ``ts_blocked". > If td_contested lock were needed ,reading ts_blocked is > not protected by td_contested lock,in the kernel source, why? > > Thanks. > -- > 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]" > -- Peace can only be achieved by understanding - A. Einstein _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"