bug#19776: 25.0.50; HTML rendering is very slow

[Lars Ingebrigtsen]

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

> You don't need a new byte-code, but I'd strongly advise against using
> a new special form.  It'll be much simpler to define it as a macro +
> a function, where the macro turns
>
>     (with-delayed-message MSG BODY)
>
> into
>
>     (funcall-with-delayed-message MSG (lambda () BODY))

I've now implemented this...  but testing this with a busy loop shows
that the atimer doesn't fire (or at least that the callback doesn't get
called) in all situations.

If I move the mouse pointer, for instance, then it's called.  If I don't
do anything, and eval this:

(with-delayed-message 0.5 "Yes"
  (dotimes (i 1000000000)
    (+ i 2)))

the atimer callback isn't called.  Anybody know what's up with that?

-- 
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   bloggy blog: http://lars.ingebrigtsen.no