handle memory management of QScriptValuePrivate in engine if possible

Avoid calling malloc() and free() so often. The premise is that
QScriptValue is usually a short-lived type, and only a few QScriptValues
exist at a time, so if we cache privates in the engine, QScriptValues
will be much faster to create and destroy.

Reviewed-by: Olivier Goffart

1 files changed, 4 insertions, 0 deletions

diff --git a/src/script/api/qscriptengine_p.h b/src/script/api/qscriptengine_p.h
index eb660e2..1142fcb 100644
--- a/src/script/api/qscriptengine_p.h
+++ b/src/script/api/qscriptengine_p.h
@@ -210,6 +210,9 @@ public:
     bool scriptDisconnect(JSC::JSValue signal, JSC::JSValue receiver,
                           JSC::JSValue function);
 
+    QScriptValuePrivate *allocateScriptValuePrivate(size_t);
+    void freeScriptValuePrivate(QScriptValuePrivate *p);
+
     void registerScriptValue(QScriptValuePrivate *value);
     void unregisterScriptValue(QScriptValuePrivate *value);
     void detachAllRegisteredScriptValues();
@@ -237,6 +240,7 @@ public:
     QScriptEngineAgent *activeAgent;
     int agentLineNumber;
     QScriptValuePrivate *registeredScriptValues;
+    QScriptValuePrivate *freeScriptValues;
     QHash<int, QScriptTypeInfo*> m_typeInfos;
     int processEventsInterval;
     QScriptValue abortResult;