On Wed, May 29, 2002 at 12:20:20AM -0700, Peter Wemm wrote: > M_WAIT for mbufs (not malloc) was an alias for M_WAITOK, and M_DONTWAIT > (also just for mbufs) was an alias for M_NOWAIT. > > You call things and either permit them to tsleep() or you do not. > > M_NOWAIT to the mbuf m_get*, malloc*, contigmalloc*, uma_* etc means > "you must not tsleep!". M_WAITOK conversely means that tsleep should be > called as needed. Things like malloc still can return NULL even with M_WAITOK > for non-recoverable scenarios.
Exactly, with one exception: they are no longer aliases. I had renamed (after some discussion) M_WAIT and M_DONTWAIT in the mbuf code to M_TRYWAIT and M_DONTWAIT, respectively, to avoid confusion and avoid mixing the flags with the malloc() flags. > Cheers, > -Peter > -- > Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] > "All of this is for nothing if we don't go to the stars" - JMS/B5 -- Bosko Milekic [EMAIL PROTECTED] [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
