Memory leaks in TreeView ?

[Citron]

Hi there,

I was investigating a constant memory growth in a QML application of mine, and I created a really simple QML application that uses a TreeView and a FolderListModel. I use a timer to repeatedly switch the folder of the model between 2 folders, and the memory used by the application keeps growing.

Here is the application that I tested. You can save to a file and run directly through qmlscene :

import QtQuick 2.3
import QtQuick.Controls 1.4
import QtQuick.Window 2.2
import Qt.labs.folderlistmodel 2.1

Window {
	id: root

	visible: true

	width: 500
	height: 500

	Timer {
		id: timer
		interval: 0
		onTriggered: {
			fileSystemModel.folder = fileSystemModel.odd ? "file:///D:/" : "file:///C:/";
			fileSystemModel.odd = !fileSystemModel.odd;
			timer.start();
		}
	}

	Component.onCompleted: {
		timer.start();
	}

	FolderListModel {
		id: fileSystemModel
		property bool odd: false
	}

	TreeView {
		anchors.fill: parent
		TableViewColumn {
			title: "Name"
			role: "fileName"
			width: 300
		}
		model: fileSystemModel
	}

}

And here is a screenshot of the process explorer for qmlscene :

I would be interested if someone could run this little application on other platforms and tell me if they notice this behavior.
Also, if this is a known leak, or if I do something that I shouldn't, I would be interested in a solution.

[SGaist]

Hi,

I'd recommend bringing that topic to the interest mailing list. You'll find there Qt's developers/maintainers (this forum is more user oriented)

[Citron]

Hi,

Thanks for the suggestion. I'm really not familiar with mailing lists (and a bit afraid of the quantity of emails I would receive if I was to subscribe to one such as Qt) Is there no other place where developers go ?
Or do you think that I should report an issue ?

[SGaist]

You can modify your subscription and only get one digest, otherwise there's also the #qt IRC channel

[Citron]

Hi again !

I finally registered to the mailing list in digests mode and sent my question there. I hope it will have a little more success than here :)
Thanks !