Because DelayedRunnables are fire-and-forget, there is no way for a targeted
EventTarget to clean them up on shutdown. Thus if a timer fires after
EventTarget shutdown it will fail to dispatch the timer event, and avoid
releasing the timer callback because it's not on the targeted thread. This
causes a leak as there is a ref-cycle between nsTimerImpl::mCallback and
DelayedRunnable::mTimer.
This patch adds nsIDelayedRunnableObserver for a target to observe which
DelayedRunnables are relying on their timer to run them. This allows the target
to schedule a shutdown task to cancel those timers and release the runnables on
the target thread.
Supported DelayedRunnable targets with this patch are TaskQueues,
eventqueue-based nsThreads and XPCOMThreadWrappers that wrap a supported
nsThread.
An assertion makes sure at runtime that future new uses of DelayedRunnable
target nsIDelayedRunnableObserver-supported event targets.
Differential Revision: https://phabricator.services.mozilla.com/D109781
This patch introduces a new way to way to schedule input tasks, such
that input tasks remain at `InputHigh` priority normally, however, when
there's a pending `Vsync` priority task in the task queue, we
increase the priority of input tasks from `InputHigh` to `InputHighest` to
rush processing the pending input tasks.
There are two restrictions to ensure we don't delay vsync too much:
- There's a hard limit duration
- We won't process the input tasks that are newly added after we've
started to process the current number of input tasks
Differential Revision: https://phabricator.services.mozilla.com/D109499
`High` priority is being used for vsync tasks, so we should rename it to
make it clear, and renaming it also makes our priority naming less
confusing.
Differential Revision: https://phabricator.services.mozilla.com/D109536
Because DelayedRunnables are fire-and-forget, there is no way for a targeted
EventTarget to clean them up on shutdown. Thus if a timer fires after
EventTarget shutdown it will fail to dispatch the timer event, and avoid
releasing the timer callback because it's not on the targeted thread. This
causes a leak as there is a ref-cycle between nsTimerImpl::mCallback and
DelayedRunnable::mTimer.
This patch adds nsIDelayedRunnableObserver for a target to observe which
DelayedRunnables are relying on their timer to run them. This allows the target
to schedule a shutdown task to cancel those timers and release the runnables on
the target thread.
Supported DelayedRunnable targets with this patch are TaskQueues,
eventqueue-based nsThreads and XPCOMThreadWrappers that wrap a supported
nsThread.
An assertion makes sure at runtime that future new uses of DelayedRunnable
target nsIDelayedRunnableObserver-supported event targets.
Differential Revision: https://phabricator.services.mozilla.com/D109781
Previously, the DocGroup type was not cycle-collected, as it needed to have
references from other threads for Quantum DOM. Nowadays the only off-main-thread
use of DocGroup is for dispatching runnables to the main thread which should be
tracked using a performance counter for about:performance. This means we can
remove the DocGroup references from these dispatching callsites, only storing
the Performance Counter we're interested in, and simplify make DocGroup be
cycle-collected itself.
This fixes a leak caused by adding the WindowGlobalChild getter to
WindowContext, by allowing cycles between the document and its BrowsingContext
to be broken by the cycle-collector.
Differential Revision: https://phabricator.services.mozilla.com/D108865
The SpinEventLoopUntilOrShutdown is interrupted in the main process only at stage "xpcom-shutdown", which is too late. In a content process instead we interrupt it early enough, at "content-child-will-shutdown".
This patch removes the current observer logic in nsThreadManager in favor of a current shutdown phase state machinery in AppShutdown and renames SpinEventLoopUntilOrShutdown to SpinEventLoopUntilOrQuit. It also ensures that SpinEventLoopUntilOrQuit breaks early (at "quit-application" in the main process).
For a further possible cleanup around shutdown state in child and parent process please refer to bug 1697745.
We have no automated test for this edge case, but we have diagnostic telemetry that will tell us if it helps.
Differential Revision: https://phabricator.services.mozilla.com/D107619
Since GetAcquisitionState is never used independently of
ClearAcquisitionState, we change it to TakeAcquisitionState, such that
we don't require an expensive array copy in this case.
Differential Revision: https://phabricator.services.mozilla.com/D108554
Note that this patch only transforms the use of the nsDataHashtable type alias
to a directly equivalent use of nsTHashMap. It does not change the specification
of the hash key type to make use of the key class deduction that nsTHashMap
allows for in some cases. That can be done in a separate step, but requires more
attention.
Differential Revision: https://phabricator.services.mozilla.com/D106008
This makes the naming more consistent with other functions called
Insert and/or Update. Also, it removes the ambiguity whether
Put expects that an entry already exists or not, in particular because
it differed from nsTHashtable::PutEntry in that regard.
Differential Revision: https://phabricator.services.mozilla.com/D105473
No code changes.
Build issues were found by renaming `MOZ_GECKO_PROFILER` to something else in toolkit/moz.configure, in both unified and non-unified builds, on all supported platforms.
Also updated some profiler-related comments.
Differential Revision: https://phabricator.services.mozilla.com/D105375
There are no code changes, only #include changes.
It was a fairly mechanical process: Search for all "AUTO_PROFILER_LABEL", and in each file, if only labels are used, convert "GeckoProfiler.h" into "ProfilerLabels.h" (or just add that last one where needed).
In some files, there were also some marker calls but no other profiler-related calls, in these cases "GeckoProfiler.h" was replaced with both "ProfilerLabels.h" and "ProfilerMarkers.h", which still helps in reducing the use of the all-encompassing "GeckoProfiler.h".
Differential Revision: https://phabricator.services.mozilla.com/D104588
There are two issues in our current setup
1) Input events which are occurring in the same tab are going to be lost
because sync XHR. We have event handling suppression for synx XHR, so input
events are going to be discarded.
2) Input events that are happening in another tab (same process as the
synx XHR tab) are not going to be delayed. This is not correct since
sync XHR should block the Javascript execution.
This patches fixes the above cases for when both TaskController and e10s are
enabled by suspending the InputTaskManager during sync XHR, which
delays the input event handling and keeps the events around.
Differential Revision: https://phabricator.services.mozilla.com/D90780
This causes no behavior changes in the current code because existing runnables
passed to NS_DispatchToThreadQueue() are either run on the main thread where
OnDiscard() is not called or they have only a no-op OnDiscard().
Differential Revision: https://phabricator.services.mozilla.com/D98120
Andreas Pehrson
Brindusan Cristian
Sean Feng
Simon Giesecke
Florian Quèze
Nika Layzell
Jens Stutte
Bas Schouten
Mike Hommey
Steve Fink
Cosmin Sabou
Gerald Squelart
smolnar
Kershaw Chang
Chris H-C
Doug Thayer
Tom Schuster
Olli Pettay
Paul Bone
Kris Wright
Karl Tomlinson