diff options
| -rw-r--r-- | src/cairo-xlib-display.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/cairo-xlib-display.c b/src/cairo-xlib-display.c index 65df2b71..92e96bab 100644 --- a/src/cairo-xlib-display.c +++ b/src/cairo-xlib-display.c @@ -457,6 +457,12 @@ _cairo_xlib_display_notify (cairo_xlib_display_t *display) cairo_xlib_job_t *jobs, *job, *freelist; Display *dpy = display->display; + /* Optimistic atomic pointer read -- don't care if it is wrong due to + * contention as we will check again very shortly. + */ + if (display->workqueue == NULL) + return; + CAIRO_MUTEX_LOCK (display->mutex); jobs = display->workqueue; while (jobs != NULL) { |