From ccd69247eaa6289bc31115f863ba4737b14fe34e Mon Sep 17 00:00:00 2001
From: Charles Yin <charles.yin@nokia.com>
Date: Thu, 3 May 2012 09:55:48 +1000
Subject: [PATCH] Add a static flag to avoid unnecessary QQmlData::init() calls

Change-Id: I0b38753bfaf2d1e22ab67977001b946a686b0f56
Reviewed-by: Matthew Vogt <matthew.vogt@nokia.com>
---
 src/qml/qml/qqmldata_p.h   | 15 ++++++++++-----
 src/qml/qml/qqmlengine.cpp | 10 +---------
 2 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/src/qml/qml/qqmldata_p.h b/src/qml/qml/qqmldata_p.h
index 0686830..e97bbb1 100644
--- a/src/qml/qml/qqmldata_p.h
+++ b/src/qml/qml/qqmldata_p.h
@@ -83,14 +83,19 @@ public:
           bindings(0), signalHandlers(0), nextContextObject(0), prevContextObject(0), bindingBitsSize(0), bindingBits(0),
           lineNumber(0), columnNumber(0), deferredComponent(0), deferredIdx(0), v8objectid(0), 
           propertyCache(0), guards(0), extendedData(0) {
+        init();
     }
 
     static inline void init() {
-        QAbstractDeclarativeData::destroyed = destroyed;
-        QAbstractDeclarativeData::parentChanged = parentChanged;
-        QAbstractDeclarativeData::objectNameChanged = objectNameChanged;
-        QAbstractDeclarativeData::signalEmitted = signalEmitted;
-        QAbstractDeclarativeData::receivers = receivers;
+        static bool initialized = false;
+        if (!initialized) {
+            initialized = true;
+            QAbstractDeclarativeData::destroyed = destroyed;
+            QAbstractDeclarativeData::parentChanged = parentChanged;
+            QAbstractDeclarativeData::objectNameChanged = objectNameChanged;
+            QAbstractDeclarativeData::signalEmitted = signalEmitted;
+            QAbstractDeclarativeData::receivers = receivers;
+        }
     }
 
     static void destroyed(QAbstractDeclarativeData *, QObject *);
diff --git a/src/qml/qml/qqmlengine.cpp b/src/qml/qml/qqmlengine.cpp
index 5ae35f9..7cb766b 100644
--- a/src/qml/qml/qqmlengine.cpp
+++ b/src/qml/qml/qqmlengine.cpp
@@ -468,15 +468,6 @@ int QQmlData::endpointCount(int index)
     return count;
 }
 
-namespace {
-    class QQmlDataInitializer {
-    public:
-        QQmlDataInitializer() {
-            QQmlData::init();
-        }
-    } _initializer;
-}
-
 void QQmlEnginePrivate::init()
 {
     Q_Q(QQmlEngine);
@@ -485,6 +476,7 @@ void QQmlEnginePrivate::init()
     if (firstTime) {
         qmlRegisterType<QQmlComponent>("QML", 1, 0, "Component");
 
+        QQmlData::init();
         firstTime = false;
     }
 
-- 
2.7.4