QtQml: Clean up lazy-loading of parts of QQmlTypePrivate

The meta objects and the enums are lazily loaded semi-independently from
each other. Their data structures take up a lot of space. We only want
to incur that cost if they are actually needed. Furthermore, the
lazy-loading needs to be thread-safe. The easiest way to make a thread
safe lazy loading structure is via a mutable atomic pointer to an
immutable object. Refactor QQmlTypePrivate to do just that.

This reduces the memory usage of the base structure by about 50%, cuts
down on the locking required to set up the extra aspects, and generally
makes the code more readable.

Change-Id: I815338d3e4de02b2f535ab2fee748bba47719efc
Reviewed-by: Fabian Kosmale <[email protected]>
Reviewed-by: Qt CI Bot <[email protected]>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/qml/qmltc/qqmltcobjectcreationhelper.cpp b/src/qml/qmltc/qqmltcobjectcreationhelper.cpp
index 693277f0f1..e5b2be9ad5 100644
--- a/src/qml/qmltc/qqmltcobjectcreationhelper.cpp
+++ b/src/qml/qmltc/qqmltcobjectcreationhelper.cpp
@@ -45,7 +45,6 @@ void qmltcCreateDynamicMetaObject(QObject *object, const QmltcTypeData &data)
     qmlTypePrivate->extraData.cppTypeData->registerEnumsFromRelatedTypes = false;
 
     qmlTypePrivate->baseMetaObject = data.metaObject;
-    qmlTypePrivate->init();
 
     QQmlType qmlType(qmlTypePrivate);
     Q_ASSERT(qmlType.isValid());