bug#12384: 24.2.50; NS: mouse movement causes hang during scroll benchmark

[Jan Djärv]

Hello.

This has been fixed in the trunk.

        Jan D.

8 sep 2012 kl. 10:36 skrev YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>:

> Steps to Reproduce:
> 
> 1. $ .../Emacs.app/Contents/MacOS/Emacs -Q &
> 2. Evaluate the following expression:
> 
> ;; Scroll benchmark from
> ;; http://lists.gnu.org/archive/html/emacs-devel/2012-08/msg00411.html
> (defun scroll-benchmark () 
>   (interactive) 
>   (let ((oldgc gcs-done) 
>         (oldtime (float-time))) 
>     (condition-case nil (while t (scroll-up) (redisplay)) 
>       (error (message "GCs: %d Elapsed time: %f seconds" 
>                       (- gcs-done oldgc) (- (float-time) oldtime)))))) 
> 
> 3. Evaluate the following expression:
> 
> (progn
>  (find-file (expand-file-name "src/xdisp.c" source-directory))
>  (goto-char (point-min))
>  (redisplay)
>  (scroll-benchmark))
> 
> 4. Wait for the benchmark to finish.
> 5. Repeat Step 3.
> 6. Before the second benchmark run completes, move the mouse pointer.
> 
> Then, we can observe the followings until the benchmark finishes.
> 
>  - The scroll bar thumb stops moving.
>  - The mouse pointer turns into the "spinning rainbow".
>  - C-g cannot quit the benchmark.
> 
> This does not happen on X11 builds or the Mac port.
> 
> See also
> http://lists.gnu.org/archive/html/emacs-devel/2012-08/msg00469.html .
> 
>                                    YAMAMOTO Mitsuharu
>                               mituharu@math.s.chiba-u.ac.jp
> 
> In GNU Emacs 24.2.50.1 (x86_64-apple-darwin12.1.0, NS apple-appkit-1187.00)
> of 2012-09-08 on YAMAMOTO-no-iMac.local
> Bzr revision: 109934 monnier@iro.umontreal.ca-20120907201455-blix9xyqrsksqwyz
> Windowing system distributor `Apple', version 10.3.1187
> Configured using:
> `configure '--with-ns''
> 
> Important settings:
>  value of $LANG: ja_JP.UTF-8
>  locale-coding-system: utf-8-unix
>  default enable-multibyte-characters: t
> 
> Major mode: Lisp Interaction
> 
> Minor modes in effect:
>  tooltip-mode: t
>  mouse-wheel-mode: t
>  tool-bar-mode: t
>  menu-bar-mode: t
>  file-name-shadow-mode: t
>  global-font-lock-mode: t
>  font-lock-mode: t
>  blink-cursor-mode: t
>  auto-composition-mode: t
>  auto-encryption-mode: t
>  auto-compression-mode: t
>  line-number-mode: t
>  transient-mark-mode: t
> 
>