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[wimp] Turn multithreading on for wimp. - #190626

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eyebrowsoffire:multithreaded_wimp
Aug 20, 2026
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eyebrowsoffire:multithreaded_wimp

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@eyebrowsoffire eyebrowsoffire commented Aug 5, 2026 •

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After #190048, we no longer have multthreading issues with wimp, so we should turn multithreading on.

This addresses #178749

After flutter#190048, we no longer have
multthreading issues with wimp, so we should turn multithreading on.
@flutter-dashboard flutter-dashboard Bot added the CICD Run CI/CD label Aug 5, 2026
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It looks like this pull request may not have tests. Please make sure to add tests or get an explicit test exemption before merging.

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. If you believe this PR qualifies for a test exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!). The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group.

@github-actions github-actions Bot added engine flutter/engine related. See also e: labels. platform-web Web applications specifically team-web Owned by Web platform team labels Aug 5, 2026

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Code Review

This pull request updates skwasm_loader.js to remove the config.enableWimp condition from the skwasmSingleThreaded configuration property, along with the comments discussing multi-threaded wimp instability. There are no review comments, and I have no feedback to provide.

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flutter-zl requested a review from mdebbar August 5, 2026 18:31
@eyebrowsoffire eyebrowsoffire added the autosubmit Merge PR when tree becomes green via auto submit App label Aug 19, 2026
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Merged via the queue into flutter:master with commit c418ca5 Aug 20, 2026
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@flutter-dashboard flutter-dashboard Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Aug 20, 2026
@bkonyi bkonyi added the revert Autorevert PR (with "Reason for revert:" comment) label Aug 20, 2026
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A reason for requesting a revert of flutter/flutter/190626 could not be found or the reason was not properly formatted. Begin a comment with 'Reason for revert:' to tell the bot why this issue is being reverted.

@flutteractionsbot flutteractionsbot removed the revert Autorevert PR (with "Reason for revert:" comment) label Aug 20, 2026
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bkonyi commented Aug 20, 2026

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Reason for revert: failing Linux linux_web_engine_tests on tree.

@bkonyi bkonyi added the revert Autorevert PR (with "Reason for revert:" comment) label Aug 20, 2026
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Successfully created revert PR: #191423

@flutteractionsbot flutteractionsbot removed the revert Autorevert PR (with "Reason for revert:" comment) label Aug 20, 2026
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Successfully created revert PR: #191424

pull Bot pushed a commit to safarmer/flutter that referenced this pull request Aug 20, 2026
Reverts: [[wimp] Turn multithreading on for
wimp.](flutter#190626)

Initiated by: @bkonyi

Reason for reverting: [failing Linux linux_web_engine_tests on
tree](https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20linux_web_engine_tests/9022).

Original PR Author: @eyebrowsoffire

Reviewed By: @mdebbar

The original PR description is provided below:

After flutter#190048, we no longer have
multthreading issues with wimp, so we should turn multithreading on.

This addresses flutter#178749
GhagSagar23 pushed a commit to GhagSagar23/flutter that referenced this pull request Aug 20, 2026
Reverts: [[wimp] Turn multithreading on for
wimp.](flutter#190626)

Initiated by: @bkonyi

Reason for reverting: [failing Linux linux_web_engine_tests on
tree](https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20linux_web_engine_tests/9022).

Original PR Author: @eyebrowsoffire

Reviewed By: @mdebbar

The original PR description is provided below:

After flutter#190048, we no longer have
multthreading issues with wimp, so we should turn multithreading on.

This addresses flutter#178749
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