RE: Question about RTE ring

[Konstantin Ananyev <konstantin.ananyev@huawei.com>]

> 
> Thans for your response !
> 
> Yes, using rte_ring between multiple process.
> 
> So in this case you’re saying the behavior is undefined ?
> In my case another process crashed after that.

Without a proper debug session it is really hard to tell what is going on.
If the situation is reproducible, I'd suggest to run it with gdb and see.

> 
> > Le 11 avr. 2024 à 11:08, Konstantin Ananyev <konstantin.ananyev@huawei.com> a écrit :
> >
> > 
> >
> > Hi,
> >>
> >> As part of a project I have a question about the rte ring.
> >> I’m using rte ring multi producer/single consumer.
> >> The producers are several process.
> >> If one producer is enqueuing an element and crashed (kill pid) in the middle of the
> >> enqueuing, can it compromise the ring ?
> >
> > I suppose you are using rte_ring as IPC mechanism between multiple processes, correct?
> > In theory - yes, if your producer crashed during enqueue() to the ring, then yes, the ring might be affected.
> > If producer already moved prod.head  and crashed before updating prod.tail, then no other producers
> > will be able to enqueue() into the ring, till you'll do reset() for it.
> > I expect such situation really rare and hard to reproduce, but in theory it is possible.
> > Konstantin