qt5-qtwayland/0044-Avoid-calling-requestUpdate-from-wrong-thread.patch

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From a20047ef5387673471af835cd3fba7e23585bc75 Mon Sep 17 00:00:00 2001
2022-09-20 15:38:03 +00:00
From: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Date: Mon, 8 Aug 2022 12:14:01 +0200
2023-01-05 16:03:30 +00:00
Subject: [PATCH 44/57] Avoid calling requestUpdate from wrong thread
2022-09-20 15:38:03 +00:00
In certain circumstances, we can get to createDecoration()
from the render thread (from QWaylandGLContext::makeCurrent)
Calling requestUpdate() from this secondary thread would
cause an assert, so we queue the call on the appropriate
thread instead.
This amends af7b60ade5c4be81cbc58eb18307c017d5594071.
Pick-to: 5.15 6.2 6.3 6.3.2 6.4
Fixes: QTBUG-105308
Change-Id: I4805265f39e24eb1464897532be2025bc3c27728
Reviewed-by: Inho Lee <inho.lee@qt.io>
(cherry picked from commit a0c0b5b42335808c2222cbf72c1758e955731ed9)
---
src/client/qwaylandwindow.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
index cb610510..771c96cc 100644
--- a/src/client/qwaylandwindow.cpp
+++ b/src/client/qwaylandwindow.cpp
@@ -873,7 +873,11 @@ bool QWaylandWindow::createDecoration()
// size and are not redrawn, leaving the new buffer empty. As a simple
// work-around, we trigger a full extra update whenever the client-side
// window decorations are toggled while the window is showing.
- window()->requestUpdate();
+ // Note: createDecoration() is sometimes called from the render thread
+ // of Qt Quick. This is essentially wrong and could potentially cause problems,
+ // but until the underlying issue has been fixed, we have to use invokeMethod()
+ // here to avoid asserts.
+ QMetaObject::invokeMethod(window(), &QWindow::requestUpdate);
}
return mWindowDecoration;
--
2023-01-05 16:03:30 +00:00
2.39.0
2022-09-20 15:38:03 +00:00