Re: [whatwg] BroadcastChannel memory leak

> When is it safe for a user agent to garbage collect a BroadcastChannel
instance?

When there's no direct reference to the object and no onmessage handler
attached to it. (?)



On Fri, May 23, 2014 at 5:23 PM, Adam Barth <w3c@adambarth.com> wrote:

> When is it safe for a user agent to garbage collect a BroadcastChannel
> instance?
>
>
> http://www.whatwg.org/specs/web-apps/current-work/multipage/web-messaging.html#broadcasting-to-other-browsing-contexts
>
> Given that another document might create a new BroadcastChannel
> instance at any time, the |message| event of the object might fire any
> time its responsible document is fully active.  For web application
> that have long-lived documents, the BroadcastChannel might not be
> eligible for garbage collection for a long time.
>
> Proposal: Add a |close| method to the BroadcastChannel interface
> similar to the |close| method on MessagePort.  The |close| method
> would just neuter the instance of the channel and prevent it from
> receiving further messages.
>
> Adam
>

Received on Saturday, 24 May 2014 00:55:02 UTC