Child crashes when the backend is down
phk at phk.freebsd.dk
Wed May 2 10:46:14 CEST 2007
In message <ujr1whzvco5.fsf at false.linpro.no>, Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= writes:
>"Poul-Henning Kamp" <phk at phk.freebsd.dk> writes:
>> o->busy is protected by the objhead mutex because otherwise we would have
>> to grab all the objects mutexes in the hash lookup.
>> The busy flag is very seldomly manipulated, and this is much more efficie=
>Fine, but what is the locking protocol when o has no objhead?
Obviously nobody else will ever check the busy flag in that case,
so the locking isn't necessary.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
More information about the varnish-dev