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Meta: Only check changed files in check-debug-flags during pre-commit

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This speeds up the script from about 170ms down to about 80ms for
changes in Debug.h.in or similarly "DEBUG"-rich files, down to <10ms for
more common changesets.

160ms may not feel like much, but it adds up quickly, especially since
we run a dozen scripts during pre-commit.
This commit is contained in:
Ben Wiederhake 2022-09-18 20:10:57 +02:00 committed by Brian Gianforcaro
parent 88c8ad840d
commit 4caaa78baf
Notes: sideshowbarker 2024-07-17 06:51:11 +09:00 
Author: https://github.com/BenWiederhake
Commit: https://github.com/SerenityOS/serenity/commit/4caaa78baf
Pull-request: https://github.com/SerenityOS/serenity/pull/15281
Reviewed-by: https://github.com/bgianfo ✅
1 changed files with 19 additions and 7 deletions
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26
Meta/check-debug-flags.sh
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@ -21,15 +21,27 @@ while IFS= read -r FLAG; do
MISSING_FLAGS=y
fi
done < <(
git ls-files -- \
'*.cpp' \
'*.h' \
'*.in' \
':!:Kernel/FileSystem/ext2_fs.h' \
if [ "$#" -eq "0" ]; then
git ls-files -- \
'*.cpp' \
'*.h' \
'*.in' \
':!:Kernel/FileSystem/ext2_fs.h'
else
# We're in the middle of a pre-commit run, so we should only check the files that have
# actually changed. The reason is that "git ls-files | grep" on the entire repo takes
# about 100ms. That is perfectly fine during a CI run, but becomes noticable during a
# pre-commit hook. It is unnecessary to check the entire repository on every single
# commit, so we save some time here.
for file in "$@"; do
if [[ ("${file}" =~ \.cpp || "${file}" =~ \.h || "${file}" =~ \.in) && ! "${file}" == "Kernel/FileSystem/ext2_fs.h" ]]; then
echo "$file"
fi
done
fi \
| xargs grep -E '(_DEBUG|DEBUG_)' \
| sed -re 's,^.*[^a-zA-Z0-9_]([a-zA-Z0-9_]*DEBUG[a-zA-Z0-9_]*).*$,\1,' \
| sort \
| uniq
| sort -u
)
if [ "n" != "${MISSING_FLAGS}" ] ; then