[Qt-qml] QTBUG-15191 Memory Leak with XMLListModel, how to workaround in Qt4.7.0 on Maemo

[bea.lam at nokia.com]

Unfortunately, the leak can't be worked around without changing the C++ code in QDeclarativeXmlListModel itself to change the xquery expressions that are actually used to read a query. To avoid the leak you'd have to avoid using XmlListModel, e.g. by using XMLHttpRequest to fetch and read the XML yourself, which involves a lot more work.

regards,

Bea

On 19/05/2011, at 5:37 AM, ext Sudheer K. wrote:

> I developed a widget for Maemo which is dependent on XMLListModel. The widget
> pulls stock quotes from Yahoo finance in regular intervals. Due to a known issue
> with XMLListModel [1], there is a memory leak every time the model is reloaded.
> However, I have to reload the model to get the latest quotes.
> 
> I am aware that this memory leak will be fixed in Qt 4.8.0. However, I don't
> know if/when Maemo will get the Qt update. Until then, I am looking for a
> workaround to avoid the memory leak. Here is a skeleton of my code[2]. Can you
> give me any suggestions?
> 
> ~Sudheer
> 
> [1] - http://bugreports.qt.nokia.com/browse/QTBUG-15191
> [2] - http://pastebin.com/fpPmKj1L
> 
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