Re: JavaScript concurrency issues & initialization delay

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Forest Bond wrote:
> Hi,
> 
> I am using JavaScript to control the plug-in.  I find that JS locks up pretty
> good when I do things like this:
> 
> setInterval(ChannelNext, 5000);
> 
> ChannelNext changes the mplayer URL and calls Play().  Is it ok to call play
> methods from a separate thread?  The JS console in xulrunner becomes
> unresponsive when I do this.  As you are probably aware, JS doesn't provide a
> non-threaded delay capability, which makes timed loops difficult if the plug-in
> doesn't like threads.
> 
> There is another issue as well.  I am instantiating the plug-in by using
> document.createElement("object") and then filling in the necessary element
> attributes.  As expected, the browser creates a plug-in instance.  However,
> there appears to be a delay between instantiation and the time the plug-in
> becomes usable.  My first call to GetURL() fails because mplayer.GetURL ==
> undefined.  The actual length of time that this is the case appears to be
> somewhat unpredictable, although it has never been very long, although all of my
> media is local.
> 
> Thoughts?
> 
> Thanks,
> Forest

You might want to check the playState variable prior to switching
channels..

As far as calling methods from thread, I don't know if that is supported
or not. I don't know of anything that would prevent it, but threads are
always tricky.

Kevin


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