Closed
Bug 1389492
Opened 7 years ago
Closed 7 years ago
helper_key_scroll can intermittently time out
Categories
(Core :: Panning and Zooming, enhancement, P3)
Tracking
()
RESOLVED
FIXED
mozilla57
Tracking | Status | |
---|---|---|
firefox55 | --- | unaffected |
firefox56 | --- | wontfix |
firefox57 | --- | fixed |
People
(Reporter: kats, Assigned: kats)
References
Details
(Whiteboard: [gfx-noted])
Attachments
(1 file)
See Stone's investigation in bug 1351148 comment 156. What he found (which makes sense to me) is that since the VK_END scroll is running on the main thread, waiting for it to finish via waitForApzFlushedRepaints is incorrect. That function is intended to wait for APZ-side stuff to finish. In this case waitForApzFlushedRepaints might run the provided callback while the main-thread AsyncScroll thing is still going and triggering repaints. I think if we take control of the refresh driver and tick it a few times that should be sufficient to let the AsyncScrollCallback calls finish up. I'm working on a patch to do this.
Comment hidden (mozreview-request) |
Assignee | ||
Updated•7 years ago
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Assignee: nobody → bugmail
Assignee | ||
Comment 2•7 years ago
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Comment on attachment 8896297 [details] Bug 1389492 - Ensure the helper_key_scroll waits for repaints from the main-thread scroll to finish before triggering the async scroll. Stone, can you check if this fixes the problem for you?
Attachment #8896297 -
Flags: feedback?(sshih)
Comment 3•7 years ago
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mozreview-review |
Comment on attachment 8896297 [details] Bug 1389492 - Ensure the helper_key_scroll waits for repaints from the main-thread scroll to finish before triggering the async scroll. https://reviewboard.mozilla.org/r/167570/#review172808 This seems reasonable to me. Thanks for adding better logging info also.
Attachment #8896297 -
Flags: review?(rhunt) → review+
Pushed by kgupta@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/eeb77c809dc0 Ensure the helper_key_scroll waits for repaints from the main-thread scroll to finish before triggering the async scroll. r=rhunt
Assignee | ||
Updated•7 years ago
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Priority: -- → P3
Whiteboard: [gfx-noted]
Comment 5•7 years ago
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Comment on attachment 8896297 [details] Bug 1389492 - Ensure the helper_key_scroll waits for repaints from the main-thread scroll to finish before triggering the async scroll. It works for me. Can't reproduce it in local and on try server. Thanks.
Attachment #8896297 -
Flags: feedback?(sshih) → feedback+
Comment 6•7 years ago
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bugherder |
https://hg.mozilla.org/mozilla-central/rev/eeb77c809dc0
Status: NEW → RESOLVED
Closed: 7 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla57
Comment 7•7 years ago
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Too late for 56. Mass won't fix for 56.
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Description
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