Re: A serious bug in execution – where to debug?

[Roman Perepelitsa <roman.perepelitsa@xxxxxxxxx>]

On Tue, Jul 30, 2019 at 9:34 PM Sebastian Gniazdowski <
sgniazdowski@xxxxxxxxx> wrote:

> On Tue, 30 Jul 2019 at 21:24, Roman Perepelitsa
> <roman.perepelitsa@xxxxxxxxx> wrote:
> >
> > On Tue, Jul 30, 2019 at 8:53 PM Sebastian Gniazdowski
> > <sgniazdowski@xxxxxxxxx> wrote:
> > >
> > > On Tue, 30 Jul 2019 at 20:22, Roman Perepelitsa
> > > <roman.perepelitsa@xxxxxxxxx> wrote:
> > > >
> > > > Do you think it's possible to implement clean shutdown and reentrant
> > > > initialization for a piece of code as blackbox?
> > >
> > > What do you mean exactly? As a blackbox - as a regular, repeatable
> method?
> >
> > In order to implement clean shutdown for a piece of code with
> > non-trivial capabilities you have to rely on its implementation
> > details. You cannot implement generic clean shutdown that will work
> > with any code.
>
> Yeah but this is solved by the unload function that I've described in
> the previous post.
>

I think we are in agreement. If there is a public function to unload, you
can call it. If there isn't, it's a missing feature that cannot be provided
by anyone other than the code's author. it's not possible to safely unload
code as a blackbox without knowing all of its implementation details.

Both gitstatusd and p10k do provide public functions for unloading. You are
welcome to call them. They guarantee that repeated load+unload won't leak
resources. That is, as long as you don't unset any of their internal
variables. They do leave a handful of global parameters after unloading;
without them they cannot be loaded correctly again.

Roman.