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qt5-qtbase/qt5-qtbase-5.5-0001-have-xcb-windows-platform-integration-classes-keep-their-own-instance-pointer.patch

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commit df39295f23c7d9ead8481a95b9c78caaff1e8bc8
Author: Sandro Mani <manisandro@gmail.com>
Date: Mon Feb 16 10:22:14 2015 +0100
Have XCB/Windows platform integration classes keep their own instance pointer
Through the chain of code called by QPlatformIntegrationFactory::create, there
are cases where QGuiApplicationPrivate::platform_integration is accessed
(typically through QGuiApplicationPrivate::platformIntegration()) before the call
to QPlatformIntegrationFactory::create has returned.
Change-Id: I7805b72be5b56aed5cb8ce30cb908743c9b1f91b
Task-number: QTBUG-44388
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp
index 58d6758..d06f605 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.cpp
+++ b/src/plugins/platforms/windows/qwindowsintegration.cpp
@@ -235,9 +235,12 @@ QWindowsIntegrationPrivate::~QWindowsIntegrationPrivate()
delete m_fontDatabase;
}
+QWindowsIntegration *QWindowsIntegration::m_instance = Q_NULLPTR;
+
QWindowsIntegration::QWindowsIntegration(const QStringList &paramList) :
d(new QWindowsIntegrationPrivate(paramList))
{
+ m_instance = this;
#ifndef QT_NO_CLIPBOARD
d->m_clipboard.registerViewer();
#endif
@@ -246,6 +249,7 @@ QWindowsIntegration::QWindowsIntegration(const QStringList &paramList) :
QWindowsIntegration::~QWindowsIntegration()
{
+ m_instance = Q_NULLPTR;
}
void QWindowsIntegration::initialize()
@@ -540,11 +544,6 @@ QPlatformAccessibility *QWindowsIntegration::accessibility() const
}
#endif
-QWindowsIntegration *QWindowsIntegration::instance()
-{
- return static_cast<QWindowsIntegration *>(QGuiApplicationPrivate::platformIntegration());
-}
-
unsigned QWindowsIntegration::options() const
{
return d->m_options;
diff --git a/src/plugins/platforms/windows/qwindowsintegration.h b/src/plugins/platforms/windows/qwindowsintegration.h
index 7fb37bc..ff26342 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.h
+++ b/src/plugins/platforms/windows/qwindowsintegration.h
@@ -91,7 +91,7 @@ public:
Qt::KeyboardModifiers queryKeyboardModifiers() const Q_DECL_OVERRIDE;
QList<int> possibleKeys(const QKeyEvent *e) const Q_DECL_OVERRIDE;
- static QWindowsIntegration *instance();
+ static QWindowsIntegration *instance() { return m_instance; }
inline void emitScreenAdded(QPlatformScreen *s) { screenAdded(s); }
inline void emitDestroyScreen(QPlatformScreen *s) { destroyScreen(s); }
@@ -104,6 +104,8 @@ public:
private:
QScopedPointer<QWindowsIntegrationPrivate> d;
+
+ static QWindowsIntegration *m_instance;
};
QT_END_NAMESPACE
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index ae59de5..0091736 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -279,7 +279,7 @@ void QXcbConnection::updateScreens()
++xcbScreenNumber;
} // for each xcb screen
- QXcbIntegration *integration = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration());
+ QXcbIntegration *integration = QXcbIntegration::instance();
// Now activeScreens is the complete set of screens which are active at this time.
// Delete any existing screens which are not in activeScreens
for (int i = m_screens.count() - 1; i >= 0; --i) {
@@ -432,7 +432,7 @@ QXcbConnection::~QXcbConnection()
delete m_reader;
- QXcbIntegration *integration = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration());
+ QXcbIntegration *integration = QXcbIntegration::instance();
// Delete screens in reverse order to avoid crash in case of multiple screens
while (!m_screens.isEmpty())
integration->destroyScreen(m_screens.takeLast());
diff --git a/src/plugins/platforms/xcb/qxcbintegration.cpp b/src/plugins/platforms/xcb/qxcbintegration.cpp
index f0c4a7f..050a9be 100644
--- a/src/plugins/platforms/xcb/qxcbintegration.cpp
+++ b/src/plugins/platforms/xcb/qxcbintegration.cpp
@@ -118,11 +118,15 @@ static bool runningUnderDebugger()
#endif
}
+QXcbIntegration *QXcbIntegration::m_instance = Q_NULLPTR;
+
QXcbIntegration::QXcbIntegration(const QStringList &parameters, int &argc, char **argv)
: m_services(new QGenericUnixServices)
, m_instanceName(0)
, m_canGrab(true)
{
+ m_instance = this;
+
qRegisterMetaType<QXcbWindow*>();
#ifdef XCB_USE_XLIB
XInitThreads();
@@ -187,6 +191,7 @@ QXcbIntegration::QXcbIntegration(const QStringList &parameters, int &argc, char
QXcbIntegration::~QXcbIntegration()
{
qDeleteAll(m_connections);
+ m_instance = Q_NULLPTR;
}
QPlatformWindow *QXcbIntegration::createPlatformWindow(QWindow *window) const
diff --git a/src/plugins/platforms/xcb/qxcbintegration.h b/src/plugins/platforms/xcb/qxcbintegration.h
index db6ad54..ffe49e7 100644
--- a/src/plugins/platforms/xcb/qxcbintegration.h
+++ b/src/plugins/platforms/xcb/qxcbintegration.h
@@ -99,6 +99,9 @@ public:
#endif
void sync();
+
+ static QXcbIntegration *instance() { return m_instance; }
+
private:
QList<QXcbConnection *> m_connections;
@@ -118,6 +121,8 @@ private:
mutable QByteArray m_wmClass;
const char *m_instanceName;
bool m_canGrab;
+
+ static QXcbIntegration *m_instance;
};
QT_END_NAMESPACE
diff --git a/src/plugins/platforms/xcb/qxcbnativeinterface.cpp b/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
index 31dedd4..c9aaada 100644
--- a/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
+++ b/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
@@ -359,7 +359,7 @@ void *QXcbNativeInterface::getTimestamp(const QXcbScreen *screen)
void *QXcbNativeInterface::startupId()
{
- QXcbIntegration* integration = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration());
+ QXcbIntegration* integration = QXcbIntegration::instance();
QXcbConnection *defaultConnection = integration->defaultConnection();
if (defaultConnection)
return reinterpret_cast<void *>(const_cast<char *>(defaultConnection->startupId().constData()));
@@ -368,7 +368,7 @@ void *QXcbNativeInterface::startupId()
void *QXcbNativeInterface::x11Screen()
{
- QXcbIntegration *integration = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration());
+ QXcbIntegration *integration = QXcbIntegration::instance();
QXcbConnection *defaultConnection = integration->defaultConnection();
if (defaultConnection)
return reinterpret_cast<void *>(defaultConnection->primaryScreenNumber());
@@ -377,7 +377,7 @@ void *QXcbNativeInterface::x11Screen()
void *QXcbNativeInterface::rootWindow()
{
- QXcbIntegration *integration = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration());
+ QXcbIntegration *integration = QXcbIntegration::instance();
QXcbConnection *defaultConnection = integration->defaultConnection();
if (defaultConnection)
return reinterpret_cast<void *>(defaultConnection->rootWindow());
@@ -397,7 +397,7 @@ void QXcbNativeInterface::setAppUserTime(QScreen* screen, xcb_timestamp_t time)
void QXcbNativeInterface::setStartupId(const char *data)
{
QByteArray startupId(data);
- QXcbIntegration *integration = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration());
+ QXcbIntegration *integration = QXcbIntegration::instance();
QXcbConnection *defaultConnection = integration->defaultConnection();
if (defaultConnection)
defaultConnection->setStartupId(startupId);
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 0094278..7e85600 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -489,7 +489,7 @@ void QXcbWindow::create()
m_syncValue.hi = 0;
m_syncValue.lo = 0;
- const QByteArray wmClass = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration())->wmClass();
+ const QByteArray wmClass = QXcbIntegration::instance()->wmClass();
if (!wmClass.isEmpty()) {
Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE,
m_window, atom(QXcbAtom::WM_CLASS),
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