Need some understanding on expiry thread

Guillaume Quintard guillaume at varnish-software.com
Thu Jul 26 02:21:21 UTC 2018


assigned to null -> yes because you don't care about it, HSH_Derefobjcore
will be called from the mailbox in the next while iteration of exp_thread


-- 
Guillaume Quintard

On Wed, Jul 25, 2018 at 7:01 PM, Prem Kumar <n.premkumar.me at gmail.com>
wrote:

> Thanks.
> But it is assigned to null and not being deleted from heap. moreover
> HSH_Derefobjcore will not be called and not be freed ultimately.
>
>
> Thank
>
> On Thu, 26 Jul 2018 at 2:56 AM, Guillaume Quintard <
> guillaume at varnish-software.com> wrote:
>
>> Hi,
>>
>> There are people better suited to answer this, but hopefully, they'll
>> yell if I'm saying anything stupid.
>>
>> After a cursory glance at the code, I'd say that objcores can be expired
>> either from the inbox or from the binheap and that if you find a "posted"
>> oc on the binheap, it's the inbox turf, so we null the oc to not handle it
>> in the rest of the function.
>>
>> --
>> Guillaume Quintard
>>
>> On Wed, Jul 25, 2018 at 9:49 AM, Prem Kumar <n.premkumar.me at gmail.com>
>> wrote:
>>
>>> exp_expire(struct exp_priv *ep, double now)
>>> {
>>> ..
>>>  if (oc->timer_when > now)
>>>                 return (oc->timer_when);
>>>
>>>
>>>
>>>
>>>   if (oc->exp_flags & OC_EF_POSTED) {
>>>                 oc->exp_flags |= OC_EF_REMOVE;
>>>                 oc = NULL;
>>>         } else {
>>>
>>>
>>> why do we need to set to oc to NULL after marking it as NULL. How does
>>> the object will be removed from hash and free'd from respective storage
>>> backend.
>>>
>>>
>>> Thanks,
>>> Prem
>>>
>>> _______________________________________________
>>> varnish-misc mailing list
>>> varnish-misc at varnish-cache.org
>>> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>>>
>>>
>>
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