Re: [PATCH v1] tools/hv: async name resolution in kvp_daemon

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Olaf Hering <olaf@xxxxxxxxx> writes:

> Am Thu, 07 Nov 2019 14:39:11 +0100
> schrieb Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>:
>
>> Olaf Hering <olaf@xxxxxxxxx> writes:
>
>> Is it only EAI_AGAIN or do you see any other return values which justify
>> the retry? I'm afraid that in case of a e.g. non-existing hostname we'll
>> be infinitely looping with EAI_FAIL.
>
> I currently do not have a setup that reproduces the failure.
> I think if this thread loops forever, so be it.
>
> The report I have shows "getaddrinfo failed: 0xfffffffe Name or service not known" on the host side.
> And that went away within the VM once "networking was fixed", whatever this means.
> But hv_kvp_daemon would report the error string forever.

Looping forever with a permanent error is pretty unusual...

>
>> > +	pthread_detach(t);  
>> I think this should be complemented with pthread_cancel/pthread_join
>> before exiting main().
>
> If the thread is detached, it is exactly that: detached. Why do you think the main thread should wait for the detached thread?

Ah, my bad: you actually can't join a detached thread, scratch my
comment.

-- 
Vitaly





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