On 10/14/2013 12:06 PM, Bobby Holley wrote:
How common are the blocking API calls?
Expect them to be very common or almost universal for "real" Flash. Much
less common for simple display ads.
Can we somehow predict whether
the SWF will need that, and optionally use a worker/non-worker context
based on that?
Not effectively, no. SWF content can and very often does load
"subcontent" similar to iframes, so statically checking whether it
imports ExternalInterface won't give you a useful answer.
We can do whatever we like in Gecko, but I'd imagine that any proposal
to allow blocking on a worker will meet significant resistance in the
WG (which is, IMO, justified).
I'm primarily interested in solving the shumway use-case. However, once
we have implementation experience, I'm not convinced that blocking
workers is inherently a bad thing, and we should consider proposing it
at that point. Sites want to ship shumway to their own users (Flash on
ipads) and it would IMO be silly to require them to run on the main
thread just to maintain the purity of an entirely async worker design.
--BDS
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