Fix a number of shutdown crashes in TermControl #10115
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
1. The TSFInputControl may get a layout event after it has been removed
from service (and no longer has a XAML tree)
* Two fixes:
* first, guard the layour updater from accessing detached xaml
objects
* second, shut down all pending throttled functions during close
(not destruction!¹)
2. The TermControlAutomationPeer may be destructed before its events
fire.
3. The TermControlAutomationPeer may receive a notification after it has
been detached from XAML (and therefore has no dispatcher).
¹ Close happens before the control is removed from the XAML tree;
destruction happens some time later. We must detach all UI-bound events
in Close so that they don't fire between when we detach and when we
destruct.
|
I will port this forward to 1.8, but I will need some assistance in porting it for 1.9. |
|
In general (/cc @zadjii-msft), we need to be very crisp on what constitutes "teardown" for UI objects and teardown for the control. All of these crashes are caused by the UI being in a torn down state, but the control itself not being a torn down state and trying to manipulate the UI. |
|
These account for 65% of all the WT Stable crashes in Watson (!) |
zadjii-msft
added
Area-TerminalControl
lhecker
approved these changes
May 17, 2021
80 tasks
DHowett
added a commit
that referenced
this pull request
May 17, 2021
1. The TSFInputControl may get a layout event after it has been removed
from service (and no longer has a XAML tree)
* Two fixes:
* first, guard the layour updater from accessing detached xaml
objects
* second, shut down all pending throttled functions during close
(not destruction!¹)
2. The TermControlAutomationPeer may be destructed before its events
fire.
3. The TermControlAutomationPeer may receive a notification after it has
been detached from XAML (and therefore has no dispatcher).
¹ Close happens before the control is removed from the XAML tree;
destruction happens some time later. We must detach all UI-bound events
in Close so that they don't fire between when we detach and when we
destruct.
Fixes MSFT-32496693
Fixes MSFT-32496158
Fixes MSFT-32509759
Fixes MSFT-32871913
(cherry picked from commit 661fde5)
|
🎉 Handy links: |
|
🎉 Handy links: |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
from service (and no longer has a XAML tree)
objects
(not destruction!¹)
fire.
been detached from XAML (and therefore has no dispatcher).
¹ Close happens before the control is removed from the XAML tree;
destruction happens some time later. We must detach all UI-bound events
in Close so that they don't fire between when we detach and when we
destruct.
Fixes MSFT-32496693
Fixes MSFT-32496158
Fixes MSFT-32509759
Fixes MSFT-32871913