[Tarantool-patches] [PATCH v2 0/2] Prevent JIT engine breakage on fibers switch-over
Sergey Ostanevich
sergos at tarantool.org
Tue Sep 29 12:14:28 MSK 2020
Hi!
Thanks for the update, LGTM.
Sergos
On 28 сен 16:06, Igor Munkin wrote:
> Sergos,
>
> Thanks for your review!
>
> On 24.09.20, sergos at tarantool.org wrote:
> > Hi!
> >
> > Thanks for the patch, please consider my 2 cents below.
> >
> > Sergos
> >
> > > On 23 Sep 2020, at 22:06, Igor Munkin <imun at tarantool.org> wrote:
> > >
>
> <snipped>
>
> > >
> > > @ChangeLog:
> > > * Fixed fibers switch-over to prevent JIT machinery misbehaviour. Trace
> > > recording is aborted when fiber yields the execution. The yield
> > > occuring while mcode is being run leads to the platform panic
> >
> > Could you please rephrase the last sentence to be more clear, like
> > yielding from a function called directly from the jitted code (means -
> > through FFI) will cause panic.
>
> I guess the following wording is quite close to the one you desire:
>
> @ChangeLog:
> * Fixed fibers switch-over to prevent JIT machinery misbehaviour. Trace
> recording is aborted when fiber yields the execution. The yield
> occuring while the compiled code is being run (it's likely a function
> with a yield underneath called via LuaJIT FFI) leads to the platform
> panic (gh-1700, gh-4491).
>
> >
> > > (gh-1700, gh-4491).
> > >
>
> <snipped>
>
> > >
> > > --
> > > 2.25.0
> > >
> >
>
> --
> Best regards,
> IM
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