1329814 - fix race condition when shutting down a tab

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[Trevor Saunders (:tbsaunde)]

When TabChild recieves the Destroy message from its parent the doc accessibles
for that tab are shut down.  However if the Shutdown message sent by
DocAccessible::Shutdown() isn't recieved before the child process handles the
runnable that sends __delete__ to the tab parent actor the parent can send a
message to the already shut down doc accessible child actor.

Comment 1

[Trevor Saunders (:tbsaunde)]

Attachment: fix race condition when shutting down a tab

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/c6c6a1ba1218
fix race condition when shutting down a tab r=smaug

Comment 3

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Backed out for bustage due to undeclared variables:

https://hg.mozilla.org/integration/mozilla-inbound/rev/b5df9df8100004dc3e9262e10ef12392a511bd00

Push with failures: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&revision=c6c6a1ba12183d7e150935daff124d8fb1c85391
Failure log: https://treeherder.mozilla.org/logviewer.html#?job_id=67680635&repo=mozilla-inbound

/builds/slave/m-in-l64-000000000000000000000/build/src/dom/ipc/TabParent.cpp:362:7: error: 'DocAccessibleParent' was not declared in this scope
/builds/slave/m-in-l64-000000000000000000000/build/src/dom/ipc/TabParent.cpp:362:28: error: 'tabDoc' was not declared in this scope

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/8cdcf83fd165
fix race condition when shutting down a tab r=smaug

Comment 5

[Wes Kocher (:KWierso) (Not reading bugmail; email directly if needed)]

https://hg.mozilla.org/mozilla-central/rev/8cdcf83fd165