Merge remote-tracking branch 'origin/4.7' into qt-master-from-4.7

Conflicts:
	src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
	src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
	src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h

9 files changed, 46 insertions, 17 deletions

diff --git a/src/corelib/thread/qmutex_unix.cpp b/src/corelib/thread/qmutex_unix.cpp
index 5321252..11e2060 100644
--- a/src/corelib/thread/qmutex_unix.cpp
+++ b/src/corelib/thread/qmutex_unix.cpp
@@ -180,8 +180,11 @@ bool QMutexPrivate::wait(int timeout)
             errorCode = pthread_cond_timedwait(&cond, &mutex, &ti);
         }
         if (errorCode) {
-            if (errorCode == ETIMEDOUT)
+            if (errorCode == ETIMEDOUT) {
+                if (wakeup)
+                    errorCode = 0;
                 break;
+            }
             report_error(errorCode, "QMutex::lock()", "cv wait");
         }
     }
diff --git a/src/corelib/thread/qthread.cpp b/src/corelib/thread/qthread.cpp
index b8f891c..326f494 100644
--- a/src/corelib/thread/qthread.cpp
+++ b/src/corelib/thread/qthread.cpp
@@ -488,7 +488,10 @@ int QThread::exec()
     Q_D(QThread);
     QMutexLocker locker(&d->mutex);
     d->data->quitNow = false;
-    d->exited = false;
+    if (d->exited) {
+        d->exited = false;
+        return d->returnCode;
+    }
     locker.unlock();
 
     QEventLoop eventLoop;
@@ -512,10 +515,12 @@ int QThread::exec()
 
     Note that unlike the C library function of the same name, this
     function \e does return to the caller -- it is event processing
-    that stops.
-
-    This function does nothing if the thread does not have an event
-    loop.
+    that stops. 
+    
+    No QEventLoops will be started anymore in this thread  until 
+    QThread::exec() has been called again. If the eventloop in QThread::exec()
+    is not running then the next call to QThread::exec() will also return
+    immediately.
 
     \sa quit() QEventLoop
 */
diff --git a/src/gui/kernel/qwidget_x11.cpp b/src/gui/kernel/qwidget_x11.cpp
index 1723f64..1a5417d 100644
--- a/src/gui/kernel/qwidget_x11.cpp
+++ b/src/gui/kernel/qwidget_x11.cpp
@@ -444,6 +444,7 @@ static QVector<Atom> getNetWmState(QWidget *w)
         && actualType == XA_ATOM && actualFormat == 32) {
         returnValue.resize(bytesLeft / 4);
         XFree((char*) propertyData);
+        propertyData = 0;
 
         // fetch all data
         if (XGetWindowProperty(X11->display, w->internalWinId(), ATOM(_NET_WM_STATE), 0,
@@ -458,7 +459,8 @@ static QVector<Atom> getNetWmState(QWidget *w)
         if (!returnValue.isEmpty()) {
             memcpy(returnValue.data(), propertyData, returnValue.size() * sizeof(Atom));
         }
-        XFree((char*) propertyData);
+        if (propertyData)
+            XFree((char*) propertyData);
     }
 
     return returnValue;
diff --git a/src/gui/kernel/qx11embed_x11.cpp b/src/gui/kernel/qx11embed_x11.cpp
index 47cefe4..49a8194 100644
--- a/src/gui/kernel/qx11embed_x11.cpp
+++ b/src/gui/kernel/qx11embed_x11.cpp
@@ -415,8 +415,9 @@ static Bool functor(Display *display, XEvent *event, XPointer arg)
 	status = XGetWindowProperty(display, data->id, ATOM(WM_STATE), 0, 2, False, ATOM(WM_STATE),
 				    &ret, &format, &nitems, &after, &retval );
 	if (status == Success && ret == ATOM(WM_STATE) && format == 32 && nitems > 0) {
-            long *state = (long *)retval;
-	    if (state[0] == WithdrawnState) {
+            long state = *(long *)retval;
+            XFree(retval);
+            if (state == WithdrawnState) {
                 data->clearedWmState = true;
 		return true;
             }
@@ -833,6 +834,8 @@ bool QX11EmbedWidget::x11Event(XEvent *event)
                         XUnmapWindow(x11Info().display(), internalWinId());
                     }
                 }
+                if (prop_return)
+                    XFree(prop_return);
             }
         }
 
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index 2e21fbd..bbb75bc 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -1503,7 +1503,7 @@ namespace {
     {
     public:
         QOpenGLStaticTextUserData()
-            : QStaticTextUserData(OpenGLUserData), cacheSize(0, 0)
+            : QStaticTextUserData(OpenGLUserData), cacheSize(0, 0), cacheSerialNumber(0)
         {
         }
 
@@ -1515,6 +1515,7 @@ namespace {
         QGL2PEXVertexArray vertexCoordinateArray;
         QGL2PEXVertexArray textureCoordinateArray;
         QFontEngineGlyphCache::Type glyphType;
+        int cacheSerialNumber;
     };
 
 }
@@ -1538,8 +1539,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp
         staticTextItem->fontEngine()->setGlyphCache(cacheKey, cache);
         cache->insert(ctx, cache);
         recreateVertexArrays = true;
-    } else if (cache->context() == 0) { // Old context has been destroyed, new context has same ptr value
-        cache->setContext(ctx);
     }
 
     if (staticTextItem->userDataNeedsUpdate) {
@@ -1550,8 +1549,11 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp
         recreateVertexArrays = true;
     } else {
         QOpenGLStaticTextUserData *userData = static_cast<QOpenGLStaticTextUserData *>(staticTextItem->userData());
-        if (userData->glyphType != glyphType)
+        if (userData->glyphType != glyphType) {
             recreateVertexArrays = true;
+        } else if (userData->cacheSerialNumber != cache->serialNumber()) {
+            recreateVertexArrays = true;
+        }
     }
 
     // We only need to update the cache with new glyphs if we are actually going to recreate the vertex arrays.
@@ -1592,6 +1594,7 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp
         }
 
         userData->glyphType = glyphType;
+        userData->cacheSerialNumber = cache->serialNumber();
 
         // Use cache if backend optimizations is turned on
         vertexCoordinates = &userData->vertexCoordinateArray;
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
index eb38947..4362c0a 100644
--- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
@@ -53,12 +53,15 @@ QT_BEGIN_NAMESPACE
 extern Q_GUI_EXPORT bool qt_cleartype_enabled;
 #endif
 
+QBasicAtomicInt qgltextureglyphcache_serial_number = Q_BASIC_ATOMIC_INITIALIZER(1);
+
 QGLTextureGlyphCache::QGLTextureGlyphCache(const QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix)
     : QImageTextureGlyphCache(type, matrix), QGLContextGroupResourceBase()
     , ctx(0)
     , pex(0)
     , m_blitProgram(0)
     , m_filterMode(Nearest)
+    , m_serialNumber(qgltextureglyphcache_serial_number.fetchAndAddRelaxed(1))
 {
 #ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
     qDebug(" -> QGLTextureGlyphCache() %p for context %p.", this, ctx);
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
index c5c8985..cc6de28 100644
--- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
@@ -133,6 +133,8 @@ public:
     void setContext(const QGLContext *context);
     inline const QGLContext *context() const { return ctx; }
 
+    inline int serialNumber() const { return m_serialNumber; }
+
     enum FilterMode {
         Nearest,
         Linear
@@ -152,6 +154,8 @@ private:
 
     GLfloat m_vertexCoordinateArray[8];
     GLfloat m_textureCoordinateArray[8];
+
+    int m_serialNumber;
 };
 
 QT_END_NAMESPACE
diff --git a/src/plugins/bearer/icd/qnetworksession_impl.cpp b/src/plugins/bearer/icd/qnetworksession_impl.cpp
index 6d578d3..af5d85e 100644
--- a/src/plugins/bearer/icd/qnetworksession_impl.cpp
+++ b/src/plugins/bearer/icd/qnetworksession_impl.cpp
@@ -125,9 +125,6 @@ static QString get_network_interface();
 
 void QNetworkSessionPrivateImpl::iapStateChanged(const QString& iapid, uint icd_connection_state)
 {
-    if ((publicConfig.type() == QNetworkConfiguration::UserChoice) && opened) {
-        updateIdentifier(iapid);
-    }
 
     if (((publicConfig.type() == QNetworkConfiguration::UserChoice) &&
          (activeConfig.identifier() == iapid)) ||
@@ -149,6 +146,9 @@ void QNetworkSessionPrivateImpl::iapStateChanged(const QString& iapid, uint icd_
             break;
         }
     }
+    if (publicConfig.type() == QNetworkConfiguration::UserChoice) {
+        updateIdentifier(iapid);
+    }
 }
 
 void QNetworkSessionPrivateImpl::cleanupSession(void)
diff --git a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
index 20b092e..a70d232 100644
--- a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
+++ b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
@@ -42,6 +42,7 @@
 #include <QDebug>
 #include <private/qpixmap_raster_p.h>
 #include <private/qwindowsurface_gl_p.h>
+#include <private/qwindowsurface_raster_p.h>
 #include <private/qegl_p.h>
 #include <private/qglextensions_p.h>
 #include <private/qgl_p.h>
@@ -75,7 +76,12 @@ QMeeGoGraphicsSystem::~QMeeGoGraphicsSystem()
 
 QWindowSurface* QMeeGoGraphicsSystem::createWindowSurface(QWidget *widget) const
 {
-    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    QGLWidget *shareWidget = qt_gl_share_widget();
+
+    if (!shareWidget)
+        return new QRasterWindowSurface(widget);
+
+    QGLShareContextScope ctx(shareWidget->context());
 
     QMeeGoGraphicsSystem::surfaceWasCreated = true;
     QWindowSurface *surface = new QGLWindowSurface(widget);