Stefan Monnier <monnier@iro.umontreal.ca> writes:

> What I read here is "we should move each GUI event loop into its own
> thread" :-)

That's not ok, as Xlib (used by both those toolkits, and also Emacs
itself) is not thread safe.

Even though it can be thread safe at first glance, having multiple
threads work at the same time will mess up request serial tracking, and
`x_error_catcher' and friends will stop working.