Re: [PATCH] explorer: make process as system process.

[Alexandre Julliard]

Qian Hong  writes:
> One possible solution is to count threads as users rather than
> processes, but explorer.exe itself could have more than on thread,
> which makes this way complex. The attached patch use another way, just
> make explorer.exe an system process, and it will quit automatically
> few seconds after all user process exit. I don't know if there is a
> historical reason not to make explorer.exe a system process, or if
> there is a compatible reason, any background is great appreciated.

It's possible to create multiple virtual desktops, and you want them to
go away once they are no longer used. You can't have a bunch of desktop
windows stay around until the last app exits.

[PATCH] explorer: make process as system process.

[Qian Hong]

On Fri, Nov 20, 2015 at 11:30 AM, Alexandre Julliard
 wrote:
> It's possible to create multiple virtual desktops, and you want them to
> go away once they are no longer used. You can't have a bunch of desktop
> windows stay around until the last app exits.

Thanks for the information! I'll think a bit more about the refcount way.

[PATCH] explorer: make process as system process.

[Sebastian Lackner]

On 20.11.2015 06:25, Qian Hong wrote:
> On Fri, Nov 20, 2015 at 11:30 AM, Alexandre Julliard
>  wrote:
> > It's possible to create multiple virtual desktops, and you want them to
> > go away once they are no longer used. You can't have a bunch of desktop
> > windows stay around until the last app exits.
>
> Thanks for the information! I'll think a bit more about the refcount way.

When looking at the logs, the problem is pretty clear. The problem is that
when the explorer.exe process is the only user, a shutdown timeout is never
started. Something like http://ix.io/mmu would fix the problem, but it needs
more thoughts - for example, if additional protections against race-conditions
are required.

Regards,
Sebastian