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authorNicolas Dufresne <nicolas.dufresne@collabora.com>2024-06-05 15:41:20 -0400
committerKieran Bingham <kieran.bingham@ideasonboard.com>2024-07-25 09:54:56 +0100
commit04f1f2033724f038ab1152e8135292770a33f97a (patch)
tree81ddfe145cdc3cf1c4d4d346d5bd37e388489186 /utils/meson.build
parent01132257b9e70e6408e98e7df684c6db3aefe8e8 (diff)
gstreamer: pool: Replace GstAtomicQueue with deque and mutex
The GstAtomicQueue only supports 2 threads, one pushing, and one popping. We pop and push on error cases and we may have multiple threads downstream returning buffer (using tee), which breaks this assumption. On top of which, the release function, that notifies when the queue goes from empty to not-empty relies on a racy empty check. The downstream thread that does this check is effectively concurrent with our thread calling acquire(). Fix this by replacing the GstAtomicQueue with a std::deque, and protect access to that using the object lock. Bug: https://bugs.libcamera.org/show_bug.cgi?id=201 Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Acked-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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