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Fix a lock issue with _NET_CLOSE_WINDOW and WM_DELETE_WINDOW

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* exwm.el (exwm--on-ClientMessage): Calling `kill-buffer' directly
from an event context won't work since the DestroyNotify event for a
WM_DELETE_WINDOW request won't be handled until the current event
context terminates.

* exwm-manage.el (exwm-manage--kill-buffer-query-function): Avoid
potential side effects with MapWindow.
This commit is contained in:
Chris Feng 2019-08-25 00:00:00 +00:00
parent 5b9f4b0851
commit 5505cff826
2 changed files with 7 additions and 4 deletions
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6
exwm-manage.el
View file

@ -513,8 +513,10 @@ manager is shutting down."
(catch 'return
(when (or (not exwm--id)
(xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:MapWindow
:window exwm--id)))
(make-instance 'xcb:ChangeWindowAttributes
:window exwm--id
:value-mask xcb:CW:EventMask
:event-mask (exwm--get-client-event-mask))))
;; The X window is no longer alive so just close the buffer.
(when exwm--floating-frame
(let ((window (frame-parameter exwm--floating-frame 'exwm-outer-id))

5
exwm.el
View file

@ -420,7 +420,8 @@
(setq type (slot-value obj 'type)
id (slot-value obj 'window)
data (slot-value (slot-value obj 'data) 'data32))
(exwm--log "atom=%s(%s)" (x-get-atom-name type exwm-workspace--current) type)
(exwm--log "atom=%s(%s)" (x-get-atom-name type exwm-workspace--current)
type)
(cond
;; _NET_NUMBER_OF_DESKTOPS.
((= type xcb:Atom:_NET_NUMBER_OF_DESKTOPS)
@ -459,7 +460,7 @@
((= type xcb:Atom:_NET_CLOSE_WINDOW)
(let ((buffer (exwm--id->buffer id)))
(when (buffer-live-p buffer)
(kill-buffer buffer))))
(exwm--defer 0 #'kill-buffer buffer))))
;; _NET_WM_MOVERESIZE
((= type xcb:Atom:_NET_WM_MOVERESIZE)
(let ((direction (elt data 2))