Subj : Re: JS_AddRoot & JS_RemoveRoot
To   : netscape.public.mozilla.jseng
From : Brendan Eich <brendan@meer.net>
Date : Fri Sep 05 2003 09:36 pm

Edward Chan wrote:

>Can you call JS_AddRoot multiple times for an object?
>

Yes, it just wastes cycles to do it more than once without an 
intervening JS_RemoveRoot.

>And does every JS_AddRoot need to be matched with JS_RemoveRoot?
>

No.  JS_RemoveRoot removes the addressed root, period, full stop.

/be

>  For
>example, if I do:
>
>JS_AddRoot(cx, &pObj);
>
>....
>
>JS_AddRoot(cx, &pObj);
>
>....
>
>JS_RemoveRoot(cx, &pObj);
>
>Is the JSObject pointed to by pObj still rooted and protected from being
>gc'd (since I've called add twice, and remove only once)?  Or does is it the
>case that once JS_RemoveRoot is called, that's it, the obj is unrooted, and
>gc'able?
>
>Thanks,
>Ed
>
>
>  
>

.