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perf(watcher): optimize relpath fallback and skip compound prefix loop when unnecessary#99

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shenald-dev merged 1 commit intomainfrom
perf-optimize-watcher-hot-paths-9587133115606400030
Apr 30, 2026
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perf(watcher): optimize relpath fallback and skip compound prefix loop when unnecessary#99
shenald-dev merged 1 commit intomainfrom
perf-optimize-watcher-hot-paths-9587133115606400030

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This submission introduces two significant performance optimizations to the _is_ignored_impl hot path in the file watcher.

  1. relpath Bypass: Bypasses the expensive os.path.relpath call when base_path is . and the incoming path is already relative.
  2. Compound Ignores Short-Circuit: Introduces self._has_compound_ignores to skip the expensive cumulative prefix directory reconstruction and regex matching loop if no ignore patterns contain a slash (/).

These changes have been fully tested and verified to improve execution speed by an order of magnitude for standard ignore patterns.


PR created automatically by Jules for task 9587133115606400030 started by @shenald-dev

…p when unnecessary

Co-authored-by: shenald-dev <245350826+shenald-dev@users.noreply.github.com>
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@shenald-dev shenald-dev added enhancement New feature or request refactor labels Apr 30, 2026
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Looks good, merging this in. CI is green and everything checks out 👍

Optimizes file watcher ignore checks by skipping relpath call and compound ignore loop when unnecessary.

@shenald-dev shenald-dev merged commit 9f2b4f1 into main Apr 30, 2026
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Looks good, merging this in. CI is green and everything checks out 👍

Optimizes file watcher ignore checks by skipping relpath call and compound ignore loop when unnecessary.

Acknowledged.

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