Issue 807814 link

Starred by 2 users

Issue metadata

Status:	Assigned
Owner:	wolenetz@chromium.org
Cc:	robliao@chromium.org dalecur...@chromium.org wolenetz@chromium.org
Components:	Internals>Media>Source
EstimatedDays:	----
NextAction:	----
OS:	Windows
Pri:	2
Type:	Bug
M-66

On ChunkDemuxer::RemoveId() (or SourceBufferState destruction), PostTask teardown onto low-pri bg task to further mitigate renderer hangs

Project Member Reported by wolenetz@chromium.org, Feb 1 2018

Issue description

While  bug 774268  / 774288 fixed the major portion of similar media renderer hangs by doing ~WMPI MSE demuxer destruction in BG, other code paths into MSE tear down portions of the demuxer and are still causing renderer hangs.

Specifically ChunkDemuxer::RemoveId() is still causing these hangs.

Comment 1 by wolenetz@chromium.org, Feb 1 2018

Labels: -Pri-1 Pri-2

On trunk, the fix for bug 774288 was first in 65.0.3312.0.

Query showing RendererHangs since that fix, that have ChunkDemuxer::RemoveId in the stack:

https://crash.corp.google.com/browse?q=product.name%3D%27Chrome%27%20AND%20expanded_custom_data.ChromeCrashProto.ptype%3D%27renderer%27%20AND%20crash.Reason%3D%27Simulated%20Exception%27%20AND%20EXISTS%20(SELECT%201%20FROM%20UNNEST(thread)%20AS%20T%20WHERE%20EXISTS%20(SELECT%201%20FROM%20UNNEST(T.StackTrace.StackFrame)%20AS%20F%20WHERE%20STRPOS(F.FunctionName%2C%20%27ChunkDemuxer%3A%3ARemoveId%27)%20%3E%200))%20AND%20product.Version%3E%3D%2765.0.3312.0%27&sql_dialect=googlesql&ignore_case=false&enable_rewrite=true&omit_field_name=&omit_field_value=&omit_field_opt=%3D

(Relatively low rate at the moment ==> P2).

Comment 2 by wolenetz@chromium.org, Mar 29 2018

These remaining low rate of hangs including ChunkDemuxer::RemoveId() in the stack are related most commonly to StreamParser teardown (e.g. MP4 trun SampleInfo vectors, etc).

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Issue 807814 link

Issue metadata

On ChunkDemuxer::RemoveId() (or SourceBufferState destruction), PostTask teardown onto low-pri bg task to further mitigate renderer hangs

Issue description

Comment 1 by wolenetz@chromium.org, Feb 1 2018

Comment 1 Deleted

Comment 2 by wolenetz@chromium.org, Mar 29 2018

Comment 2 Deleted

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