Subj : Re: GC question
To   : netscape.public.mozilla.jseng
From : lyg
Date : Fri May 28 2004 02:46 pm


"Sterling Bates" <whoelse@sterlingbates.com> wrote in message
news:c968kv$qhc1@ripley.netscape.com...
> lyg wrote:
> >    because when i open a new document, i need a "root object" to manager
the
> > objects created in the new document, I have to create many global
objects
> > for the root objects. when I access the opened document, i just fetch
the
> > rooted "root object" and JS_SetGlobalObject(). In other words, at the
same
> > time, there is only one object as the global object and the others are
> > rooted not to GCed. When i want close the document, I will
> > JS_RemoveRoot(rootedObj) to let it GCed. Now it
> > is not the global object, why not be GCed?
>
> Try deleting the object from whatever scope you've created it under.
>
   Thanks for your answer,but i am sorry, I do not understand the upper
sentence.
   It seemed that the problem is solved with adding a sentence.

   JS_RemoveRoot(cx, &rootedObj);
   JS_ClearScope(cx, rootedObj);

would someone tell me why I must JS_ClearScope(cx, rootedObj)?
thanks again.

.