[rfc][icedtea-web] Make 'getvalue' nonblocking to reduce hanging chance & improve responsivity

[Adam Domurad]

On 06/07/2013 02:11 PM, Adam Domurad wrote:
> Hi all. I am very happy to present this patch!
>
> All Firefox hanging bugs had a common theme, Firefox waits for the
> result of some function to finish from the plugin, and IcedTea-Web
> plugin-side waits as well for the java-side.
>
> This patch should reduce the chance of Firefox outright hanging, by
> making the most frequent site of these occurences nonblocking. This will
> also improve responsivity, eg Firefox no longer 'hangs' while waiting
> for you to accept or deny a confirmation message.
>
> The patch delays waiting for initialization of the applet until its
> absolutely needed - which is only when the applet is communicated with
> using liveconnect.
>
> This especially benefits the majority of applets that do not use
> liveconnect. Eg the applets at
> http://www.walter-fendt.de/ph14e/resultant.htm no longer presents a
> blank page for a while, for me.
>
> The patch introduces (with tests) a helper class, NPObjectRef. This was
> done to make this patch easier to reason about. It should be far easier
> to know now when to retain/release an object (almost always automatic,
> only call raw_retain() when returning raw NPObject* to browser).
>
> It also introduces a wrapper around g_strdup_printf with a (very) simple
> test.
>
> I have done testing on the patch and it looks OK, but I will still test
> it more.
>
> Cheers,
> -Adam

Ping ?
-Adam