[Tarantool-patches] [PATCH v2 0/2] Prevent JIT engine breakage on fibers switch-over
Igor Munkin
imun at tarantool.org
Mon Sep 28 16:06:50 MSK 2020
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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