From 734c9e1459d50358118bac5585ba4035c1318679 Mon Sep 17 00:00:00 2001
From: Michael M <mchtly@gmail.com>
Date: Sat, 1 Jul 2017 13:14:10 -0700
Subject: [PATCH] QtUtils: add QueueOnObject
---
.../Core/DolphinQt2/QtUtils/QueueOnObject.h | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 Source/Core/DolphinQt2/QtUtils/QueueOnObject.h
diff --git a/Source/Core/DolphinQt2/QtUtils/QueueOnObject.h b/Source/Core/DolphinQt2/QtUtils/QueueOnObject.h
new file mode 100644
index 0000000000..6110bccb79
--- /dev/null
+++ b/Source/Core/DolphinQt2/QtUtils/QueueOnObject.h
@@ -0,0 +1,20 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QObject>
+#include <utility>
+
+// QWidget and subclasses are not thread-safe! However, Qt's signal-slot connection mechanism will
+// invoke slots/functions on the correct thread for any object. We can (ab)use this to queue up
+// arbitrary code from non-GUI threads. For more information, see:
+// https://stackoverflow.com/questions/21646467/
+
+template <typename F>
+static void QueueOnObject(QObject* obj, F&& func)
+{
+ QObject src;
+ QObject::connect(&src, &QObject::destroyed, obj, std::forward<F>(func), Qt::QueuedConnection);
+}