kactivities5/fix-crash-in-activities-context-menu.patch

From: David Edmundson <david@davidedmundson.co.uk>
Date: Sat, 06 Feb 2016 18:02:53 +0000
Subject: Fix crash in activities context menu
X-Git-Url: http://quickgit.kde.org/?p=kactivities.git&a=commitdiff&h=b3c8ad1ad48d65ea77724f94073909dc8ab97596
---
Fix crash in activities context menu

Currently we call deleteLater() from inside ::run which is running in a
different thread than the receiving object.
(QThread objects live in the thread that created them, not in the thread
they create)

This patch causes deleteLater to be run in the right thread.

QCoreApplication::postEvent is thread safe but it needs to be in the
right thread to work out the correct event loop level for deferred
delete events.

BUG: 351485
REVIEW: 126955
---


--- a/src/workspace/fileitemplugin/FileItemLinkingPlugin.cpp
+++ b/src/workspace/fileitemplugin/FileItemLinkingPlugin.cpp
@@ -124,7 +124,7 @@
         setActions({ action });
 
     } else if (!loaded) {
-        auto loader = new FileItemLinkingPluginActionLoader(items);
+        auto loader = FileItemLinkingPluginActionLoader::create(items);
 
         static FileItemLinkingPluginActionStaticInit init;
 

--- a/src/workspace/fileitemplugin/FileItemLinkingPluginActionLoader.cpp
+++ b/src/workspace/fileitemplugin/FileItemLinkingPluginActionLoader.cpp
@@ -39,6 +39,13 @@
 #include <KLocalizedString>
 
 #include "common/dbus/common.h"
+
+FileItemLinkingPluginActionLoader* FileItemLinkingPluginActionLoader::create(const KFileItemListProperties &items)
+{
+    auto l = new FileItemLinkingPluginActionLoader(items);
+    connect(l, &QThread::finished, l, &QObject::deleteLater);
+    return l;
+}
 
 FileItemLinkingPluginActionLoader::FileItemLinkingPluginActionLoader(
     const KFileItemListProperties &items)
@@ -150,8 +157,6 @@
     }
 
     emit result(actions);
-
-    deleteLater();
 }
 
 Action

--- a/src/workspace/fileitemplugin/FileItemLinkingPluginActionLoader.h
+++ b/src/workspace/fileitemplugin/FileItemLinkingPluginActionLoader.h
@@ -33,8 +33,7 @@
     Q_OBJECT
 
 public:
-    FileItemLinkingPluginActionLoader(const KFileItemListProperties &items);
-
+    static FileItemLinkingPluginActionLoader* create(const KFileItemListProperties &items);
     void run() Q_DECL_OVERRIDE;
 
     Action createAction(const QString &activity, bool link,
@@ -46,6 +45,7 @@
     void result(const ActionList &actions);
 
 private:
+    FileItemLinkingPluginActionLoader(const KFileItemListProperties &items);
     KFileItemListProperties items;
     KActivities::Consumer activities;
 };