GNU bug report logs -
#57364
28.1.91; asynchronous X server error when creating a second frame on alternate DISPLAY
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Reported by: Andrés Ramírez <rrandresf <at> hotmail.com>
Date: Tue, 23 Aug 2022 18:07:02 UTC
Severity: normal
Tags: moreinfo
Found in version 28.1.91
Fixed in version 29.1
Done: Lars Ingebrigtsen <larsi <at> gnus.org>
Bug is archived. No further changes may be made.
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[Message part 1 (text/plain, inline)]
Hi. Po.
>>>>> "Po" == Po Lu <luangruo <at> yahoo.com> writes:
Po> andrés ramírez <rrandresf <at> hotmail.com> writes:
[...]
Po> We already know it's cairo-side, since it goes away upon switching Cairo backends, and Emacs
Po> doesn't make RenderFreeGlyphs requests itself.
Ok. Should we let the cairo guys know about it. For giving them the
opportunity of fixing it?.
Po> That's unnecessary, since the Cairo XCB surface is present everywhere. I'd rather put a
Po> mention of the crash in etc/PROBLEMS for Emacs 28.
Are You going to apply the patch?
[patch_cairo_xcb_for_28.2.patch (text/x-patch, inline)]
--- /tmp/emacs-28.1.91/configure.ac.bak 2022-08-01 06:29:22.000000000 -0500
+++ /tmp/emacs-28.1.91/configure.ac 2022-08-30 00:53:07.706555433 -0500
@@ -3320,6 +3320,13 @@
CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
if test $HAVE_CAIRO = yes; then
+ CAIRO_XCB_MODULE="cairo-xcb >= $CAIRO_REQUIRED"
+ EMACS_CHECK_MODULES(CAIRO_XCB, $CAIRO_XCB_MODULE)
+ if test $HAVE_CAIRO_XCB = yes; then
+ CAIRO_CFLAGS="$CAIRO_CFLAGS $CAIRO_XCB_CFLAGS"
+ CAIRO_LIBS="$CAIRO_LIBS $CAIRO_XCB_LIBS"
+ AC_DEFINE(USE_CAIRO_XCB, 1, [Define to 1 if cairo XCB surfaces are available.])
+ fi
AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
CFLAGS="$CFLAGS $CAIRO_CFLAGS"
LIBS="$LIBS $CAIRO_LIBS"
--- /tmp/emacs-28.1.91/src/xterm.h.bak 2022-08-01 06:29:23.000000000 -0500
+++ /tmp/emacs-28.1.91/src/xterm.h 2022-08-30 01:14:37.623171629 -0500
@@ -78,6 +78,9 @@
#ifdef CAIRO_HAS_SVG_SURFACE
#include <cairo-svg.h>
#endif
+#ifdef USE_CAIRO_XCB
+#include <cairo-xcb.h>
+#endif
#endif
#ifdef HAVE_X_I18N
@@ -469,6 +472,7 @@
#ifdef USE_XCB
xcb_connection_t *xcb_connection;
+ xcb_visualtype_t *xcb_visual;
#endif
#ifdef HAVE_XDBE
diff -u /tmp/emacs-28.1.91/src/xterm.c.bak /tmp/emacs-28.1.91/src/xterm.c
--- /tmp/emacs-28.1.91/src/xterm.c.bak 2022-08-01 06:29:23.000000000 -0500
+++ /tmp/emacs-28.1.91/src/xterm.c 2022-08-30 01:11:39.213178617 -0500
@@ -33,6 +33,10 @@
#include "xterm.h"
#include <X11/cursorfont.h>
+#ifdef USE_XCB
+#include <xcb/xproto.h>
+#endif
+
/* If we have Xfixes extension, use it for pointer blanking. */
#ifdef HAVE_XFIXES
#include <X11/extensions/Xfixes.h>
@@ -132,6 +136,10 @@
#include <X11/XKBlib.h>
#endif
+#if defined USE_XCB && defined USE_CAIRO_XCB
+#define USE_CAIRO_XCB_SURFACE
+#endif
+
/* Default to using XIM if available. */
#ifdef USE_XIM
bool use_xim = true;
@@ -385,11 +393,20 @@
{
int width = FRAME_CR_SURFACE_DESIRED_WIDTH (f);
int height = FRAME_CR_SURFACE_DESIRED_HEIGHT (f);
- cairo_surface_t *surface
- = cairo_xlib_surface_create (FRAME_X_DISPLAY (f),
- FRAME_X_RAW_DRAWABLE (f),
- FRAME_X_VISUAL (f),
- width, height);
+ cairo_surface_t *surface;
+
+#ifdef USE_CAIRO_XCB_SURFACE
+ if (FRAME_DISPLAY_INFO (f)->xcb_visual)
+ surface = cairo_xcb_surface_create (FRAME_DISPLAY_INFO (f)->xcb_connection,
+ (xcb_drawable_t) FRAME_X_RAW_DRAWABLE (f),
+ FRAME_DISPLAY_INFO (f)->xcb_visual,
+ width, height);
+ else
+#endif
+ surface = cairo_xlib_surface_create (FRAME_X_DISPLAY (f),
+ FRAME_X_RAW_DRAWABLE (f),
+ FRAME_X_VISUAL (f),
+ width, height);
cr = FRAME_CR_CONTEXT (f) = cairo_create (surface);
cairo_surface_destroy (surface);
@@ -458,6 +475,10 @@
switch (cairo_surface_get_type (surface))
{
case CAIRO_SURFACE_TYPE_XLIB:
+#ifdef USE_CAIRO_XCB_SURFACE
+ case CAIRO_SURFACE_TYPE_XCB:
+#endif
+
cairo_surface_flush (surface);
return true;
@@ -4436,6 +4457,19 @@
x, to_y);
cairo_surface_mark_dirty_rectangle (surface, x, to_y, width, height);
}
+#ifdef USE_CAIRO_XCB_SURFACE
+ else if (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_XCB)
+ {
+ cairo_surface_flush (surface);
+ xcb_copy_area (FRAME_DISPLAY_INFO (f)->xcb_connection,
+ (xcb_drawable_t) FRAME_X_DRAWABLE (f),
+ (xcb_drawable_t) FRAME_X_DRAWABLE (f),
+ (xcb_gcontext_t) XGContextFromGC (f->output_data.x->normal_gc),
+ x, from_y, x, to_y, width, height);
+ cairo_surface_mark_dirty_rectangle (surface, x, to_y, width, height);
+ }
+#endif
+
else
{
cairo_surface_t *s
@@ -13062,6 +13096,40 @@
dpyinfo->supports_xdbe = true;
#endif
+#ifdef USE_XCB
+ xcb_screen_t *xcb_screen = NULL;
+ xcb_screen_iterator_t iter;
+ xcb_visualid_t wanted = { XVisualIDFromVisual (dpyinfo->visual) };
+ xcb_depth_iterator_t depth_iter;
+ xcb_visualtype_iterator_t visual_iter;
+
+ int screen = DefaultScreen (dpyinfo->display);
+
+ iter = xcb_setup_roots_iterator (xcb_get_setup (dpyinfo->xcb_connection));
+ for (; iter.rem; --screen, xcb_screen_next (&iter))
+ {
+ if (!screen)
+ xcb_screen = iter.data;
+ }
+
+ if (xcb_screen)
+ {
+ depth_iter = xcb_screen_allowed_depths_iterator (xcb_screen);
+ for (; depth_iter.rem; xcb_depth_next (&depth_iter))
+ {
+ visual_iter = xcb_depth_visuals_iterator (depth_iter.data);
+ for (; visual_iter.rem; xcb_visualtype_next (&visual_iter))
+ {
+ if (wanted == visual_iter.data->visual_id)
+ {
+ dpyinfo->xcb_visual = visual_iter.data;
+ break;
+ }
+ }
+ }
+ }
+#endif
+
#if defined USE_CAIRO || defined HAVE_XFT
{
/* If we are using Xft, the following precautions should be made:
Diff finished. Tue Aug 30 01:36:19 2022
Diff finished. Tue Aug 30 01:36:19 2022
Diff finished. Tue Aug 30 01:36:20 2022
[Message part 3 (text/plain, inline)]
Best Regards
This bug report was last modified 2 years and 293 days ago.
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