On 3/19/14 4:39 PM, Kyle Huey wrote:
We are discovering a lot of leaks in JS implemented DOM objects. The
general pattern seems to be that we have a DOM object that also needs
to listen to events from the message manager or notifications from the
observer service, which usually hold strong references to the
listener.
This little hack works for the observer service:
http://mxr.mozilla.org/mozilla-central/source/browser/base/content/browser-plugins.js#1226
It uses a weak reference with the observer service, plus a dummy strong
reference (via addEventListener()) to automatically manage the
lifetime... When the node/document does away, so does the event listener.
Dunno if the message manager has a way to do this, but perhaps it
wouldn't be hard to add. That it, it's kind of a hack and a cleaner
solution would be nice.
Justin
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