77 lines
3.1 KiB
Diff
77 lines
3.1 KiB
Diff
From 53de072634527c5f433911553d8f921a6e119ac1 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
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Date: Wed, 16 Feb 2022 22:34:12 +0100
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Subject: [PATCH] clutter: Bail out and warn on reentry into mapping/unmapping
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cycle
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There's a bunch of crashes right now where the assertions in
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clutter_actor_set_mapped() after calling the map/unmap() vfuncs are
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failing. The only way this can happen is by re-entering
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clutter_actor_set_mapped() during the map/unmap recursion.
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The reason for those crashes is that the shell hides/shows some actors
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in response to crossing events and key-focus changes. These in turn get
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triggered by the newly introduced ungrabbing of ClutterGrabs when an
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actor gets unmapped, which triggers GRAB_NOTIFY crossing events and
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key-focus changes.
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Since these situations are hardly avoidable (it's a valid use-case to
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hide/show something in response to a crossing/key-focus event), catch
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the set_mapped() call early while we reenter the mapping machinery and
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log a warning instead of crashing.
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Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3165
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---
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clutter/clutter/clutter-actor.c | 6 ++++++
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clutter/clutter/clutter-private.h | 3 +++
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2 files changed, 9 insertions(+)
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diff --git a/clutter/clutter/clutter-actor.c b/clutter/clutter/clutter-actor.c
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index 59345a7252..bae11088dd 100644
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--- a/clutter/clutter/clutter-actor.c
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+++ b/clutter/clutter/clutter-actor.c
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@@ -1264,6 +1264,10 @@ clutter_actor_set_mapped (ClutterActor *self,
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if (CLUTTER_ACTOR_IS_MAPPED (self) == mapped)
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return;
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+ g_return_if_fail (!CLUTTER_ACTOR_IN_MAP_UNMAP (self));
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+
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+ CLUTTER_SET_PRIVATE_FLAGS (self, CLUTTER_IN_MAP_UNMAP);
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+
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if (mapped)
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{
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CLUTTER_ACTOR_GET_CLASS (self)->map (self);
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@@ -1274,6 +1278,8 @@ clutter_actor_set_mapped (ClutterActor *self,
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CLUTTER_ACTOR_GET_CLASS (self)->unmap (self);
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g_assert (!CLUTTER_ACTOR_IS_MAPPED (self));
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}
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+
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+ CLUTTER_UNSET_PRIVATE_FLAGS (self, CLUTTER_IN_MAP_UNMAP);
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}
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/* this function updates the mapped and realized states according to
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diff --git a/clutter/clutter/clutter-private.h b/clutter/clutter/clutter-private.h
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index 377b318798..117902a35f 100644
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--- a/clutter/clutter/clutter-private.h
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+++ b/clutter/clutter/clutter-private.h
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@@ -69,6 +69,7 @@ typedef struct _ClutterMainContext ClutterMainContext;
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#define CLUTTER_ACTOR_IN_PREF_WIDTH(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_PREF_WIDTH) != FALSE)
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#define CLUTTER_ACTOR_IN_PREF_HEIGHT(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_PREF_HEIGHT) != FALSE)
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#define CLUTTER_ACTOR_IN_PREF_SIZE(a) ((CLUTTER_PRIVATE_FLAGS (a) & (CLUTTER_IN_PREF_HEIGHT|CLUTTER_IN_PREF_WIDTH)) != FALSE)
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+#define CLUTTER_ACTOR_IN_MAP_UNMAP(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_MAP_UNMAP) != FALSE)
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#define CLUTTER_PARAM_READABLE (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)
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#define CLUTTER_PARAM_WRITABLE (G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)
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@@ -105,6 +106,8 @@ typedef enum
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/* Used to avoid recursion */
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CLUTTER_IN_RELAYOUT = 1 << 7,
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+
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+ CLUTTER_IN_MAP_UNMAP = 1 << 8,
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} ClutterPrivateFlags;
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/*
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--
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GitLab
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