licenses_cpp: Switched to lexically_relative for 2x speed boost. #173048
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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. |
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This pull request improves performance by replacing std::filesystem::relative with std::filesystem::path::lexically_relative. The changes look good and should provide a speed boost. There's one potential correctness issue in FileRun where a path is not normalized before being used, which could lead to incorrect behavior with lexically_relative. I've left a suggestion to fix it.
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This pull request aims to improve performance by switching from fs::relative to fs::lexically_relative. The changes look good and correctly make paths absolute before comparison. However, I've found a potential correctness issue where paths are not normalized before being used with lexically_relative, which could lead to incorrect behavior with certain path formats. I've suggested fixes for this to ensure correctness.
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jtmcdole
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Here's the run for it, 21s on the linux bot: https://ci.chromium.org/ui/p/flutter/builders/try/Mac%20Engine%20Drone/1850102/overview Those linux virtual machines were very sensitive to disk access. I was getting 2 minutes sometimes on mine. |
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Roll Flutter from c3279ca to 871849e (56 revisions) flutter/flutter@c3279ca...871849e 2025-08-01 engine-flutter-autoroll@skia.org Roll Dart SDK from 6832e04cf2f9 to 6e1bb159c860 (8 revisions) (flutter/flutter#173119) 2025-08-01 derekx@google.com Add `--profile-startup` flag to `flutter run` (flutter/flutter#172990) 2025-08-01 32538273+ValentinVignal@users.noreply.github.com Add `side` to `RadioThemeData` (flutter/flutter#171945) 2025-08-01 katelovett@google.com Update GCA instructions (flutter/flutter#173001) 2025-08-01 jssaadeh@outlook.com [engine] Null aware elements clean-ups (flutter/flutter#173075) 2025-08-01 engine-flutter-autoroll@skia.org Roll Packages from db6988d to f0645d8 (3 revisions) (flutter/flutter#173111) 2025-08-01 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Reland licenses cpp switch 3 (#173063)" (flutter/flutter#173113) 2025-08-01 magder@google.com Update embedder API CODEOWNERS (flutter/flutter#173081) 2025-08-01 magder@google.com Move android_obfuscate_test from devicelab into tools integration.shard (flutter/flutter#169798) 2025-08-01 jhy03261997@gmail.com [A11y] RangeSlider should have 2 focus node (flutter/flutter#172729) 2025-07-31 chinmaygarde@google.com Upload the linux arm64 embedder to cloud buckets. (flutter/flutter#173068) 2025-07-31 30870216+gaaclarke@users.noreply.github.com Reland licenses cpp switch 3 (flutter/flutter#173063) 2025-07-31 bkonyi@google.com [ Tool ] Mark IOOverrides subclasses as `final` (flutter/flutter#173078) 2025-07-31 chenmingding.cmd@alibaba-inc.com [macOS] Remove duplicate object initialization (flutter/flutter#171767) 2025-07-31 magder@google.com Redistribute Android test owners (flutter/flutter#172886) 2025-07-31 magder@google.com Avoid negatives in the styleguide.md (flutter/flutter#172917) 2025-07-31 engine-flutter-autoroll@skia.org Roll Skia from 42e3bed42110 to 49e39cd3cf18 (7 revisions) (flutter/flutter#173069) 2025-07-31 ybz975218925@gmail.com Fix the issue where calling showOnScreen on a sliver after a pinned child in SliverMainAxisGroup does not reveal it. (flutter/flutter#171339) 2025-07-31 31685655+SalehTZ@users.noreply.github.com Improve assertion message in `EdgeInsetsDirectional.resolve` (flutter/flutter#172099) 2025-07-31 30870216+gaaclarke@users.noreply.github.com licenses_cpp: Switched to lexically_relative for 2x speed boost. (flutter/flutter#173048) 2025-07-31 a-siva@users.noreply.github.com Add dartvm to the dart_sdk_entitlement_config list. (flutter/flutter#173044) 2025-07-31 mdebbar@google.com [web] ClickDebouncer workaround for iOS Safari click behavior (flutter/flutter#172995) 2025-07-31 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Reland licenses cpp switch 2 (#172996)" (flutter/flutter#173059) 2025-07-31 mdebbar@google.com [web] Text editing test accepts both behaviors in Firefox (flutter/flutter#172767) 2025-07-31 30870216+gaaclarke@users.noreply.github.com Reland licenses cpp switch 2 (flutter/flutter#172996) 2025-07-31 engine-flutter-autoroll@skia.org Roll Packages from d914120 to db6988d (2 revisions) (flutter/flutter#173039) 2025-07-31 737941+loic-sharma@users.noreply.github.com Add a SliverList code sample (flutter/flutter#172986) 2025-07-31 1083941774@qq.com fix: adjust scrollable size assertion with tolerance (flutter/flutter#171426) 2025-07-31 30870216+gaaclarke@users.noreply.github.com impeller: Shrink `Command` 40 bytes (flutter/flutter#173004) 2025-07-31 mdebbar@google.com [web] Remove outdated comment about HTML renderer (flutter/flutter#172877) 2025-07-31 engine-flutter-autoroll@skia.org Roll Skia from ff4da49305c5 to 42e3bed42110 (1 revision) (flutter/flutter#173038) 2025-07-31 engine-flutter-autoroll@skia.org Roll Skia from 7d468a4868cb to ff4da49305c5 (3 revisions) (flutter/flutter#173028) 2025-07-31 engine-flutter-autoroll@skia.org Roll Skia from 951277895c86 to 7d468a4868cb (1 revision) (flutter/flutter#173027) 2025-07-31 a-siva@users.noreply.github.com Manual roll of Dart from 14ea8d342149 to 6832e04cf2f9 (flutter/flutter#173015) 2025-07-31 engine-flutter-autoroll@skia.org Roll Skia from 8bdf4cdcf4ed to 951277895c86 (2 revisions) (flutter/flutter#173022) 2025-07-31 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from bQVQlLssTxxLjoDU0... to xo_bqOoFuBKFmgKxn... (flutter/flutter#173021) 2025-07-31 31685655+SalehTZ@users.noreply.github.com feat: Add `cursorHeight` to `DropdownMenu` (flutter/flutter#172615) 2025-07-31 engine-flutter-autoroll@skia.org Roll Skia from a3347cee2d73 to 8bdf4cdcf4ed (3 revisions) (flutter/flutter#173013) 2025-07-31 bkonyi@google.com [ Widget Preview ] Add `--web-server` support (flutter/flutter#172978) 2025-07-30 jmccandless@google.com Bump customer tests for zulip fix 2 (flutter/flutter#173003) 2025-07-30 jssaadeh@outlook.com Migrate to null aware elements - Part 4 (flutter/flutter#172322) 2025-07-30 fluttergithubbot@gmail.com Marks Linux linux_feature_flags_test to be unflaky (flutter/flutter#172629) 2025-07-30 bkonyi@google.com [ Widget Previews ] Add support for `MultiPreview`s (flutter/flutter#172852) 2025-07-30 30870216+gaaclarke@users.noreply.github.com Made licenses_cpp simpatico with google licenses (flutter/flutter#172991) 2025-07-30 engine-flutter-autoroll@skia.org Roll Skia from d579722d65c6 to a3347cee2d73 (6 revisions) (flutter/flutter#172989) 2025-07-30 ricardodalarme@outlook.com Migrate to null aware elements - Part 5 (flutter/flutter#172418) ...
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…tter#173048) rework of flutter#172701 test: no logical change, just performance change On my machine this takes us from ~35s to 19s. ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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…tter#173048) rework of flutter#172701 test: no logical change, just performance change On my machine this takes us from ~35s to 19s. ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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…tter#173048) rework of flutter#172701 test: no logical change, just performance change On my machine this takes us from ~35s to 19s. ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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…tter#173048) rework of flutter#172701 test: no logical change, just performance change On my machine this takes us from ~35s to 19s. ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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rework of #172701
test: no logical change, just performance change
On my machine this takes us from ~35s to 19s.
Pre-launch Checklist
///).If you need help, consider asking for advice on the #hackers-new channel on Discord.
Note: The Flutter team is currently trialing the use of Gemini Code Assist for GitHub. Comments from the
gemini-code-assistbot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed.