Andrew Osmond 3346e7fe2d Bug 1444537 - Part 2. Shutting down the decode pool should make animated decoders bail early. r=tnikkel ...

When we shutdown the decode pool threads, it does not do a simple join
with the main thread. It will actually process the main thread event
loop, which can cause a bad series of events. The refresh tick could
still be running and advancing our animated images, causing the animated
decoders to continue running, which in turn prevents the decoder threads
from finishing shutting down, and the main thread from joining them.

Now we check on each frame whether or not the decoder should just stop
decoding more frames because the decode pool has started shutdown. If it
has, it will stop immediately.

2018-03-27 10:57:01 -04:00

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