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0967269ab5
Introduce try_make_progress() as a way to enforce the following invariant between the submit and ready queues: the ready queue must always be drained first. This is to avoid deadlocks: draining the submit queue will fail if the ready queue is full enough, since this prevents the deallocation of the VASurfaces embedded in the handles stored in the ready queue. This means that no progress gets done. While we are at it, make sure to call it in places where we were only erroneously draining the submit queue (which again, means that no progress could be made) BUG=b:214478588 TEST="The decoder does not randomly stalls if the guest app is too slow to retrieve frames in the ready queue" Change-Id: I9ea34089b7df4417272cdc775d42422b865a993c Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3901198 Commit-Queue: Alexandre Courbot <acourbot@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org> Reviewed-by: Alexandre Courbot <acourbot@chromium.org> |
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