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#!/usr/bin/env bash
current_branch=$(git rev-parse --abbrev-ref HEAD)
if [ "$current_branch" == "HEAD" ]; then
current_branch=$(git rev-parse HEAD)
fi
restore_branch() {
echo "Restoring original branch/commit: $current_branch"
git checkout "$current_branch"
}
trap restore_branch EXIT
# Check if there are uncommitted changes
if ! git diff --quiet || ! git diff --cached --quiet; then
echo "There are uncommitted changes. Please commit or stash them before running this script."
exit 1
fi
# Ensure that at least one commit argument is passed
if [ "$#" -lt 1 ]; then
echo "Usage: $0 <commit1> <commit2> ... <commitN>"
exit 1
fi
commits=("$@")
benchmarks_dir=benchmarks
if ! mkdir -p "${benchmarks_dir}"; then
echo "Unable to create dir for benchmarks data"
exit 1
fi
# Benchmark results
bench_files=()
# Run benchmark for each listed commit
for i in "${!commits[@]}"; do
commit="${commits[i]}"
git checkout "$commit" || {
echo "Failed to checkout $commit"
exit 1
}
# Sanitized commmit message
commit_message=$(git log -1 --pretty=format:"%s" | tr -c '[:alnum:]-_' '_')
# Benchmark data will go there
bench_file="${benchmarks_dir}/${i}_${commit_message}.bench"
if ! go test -bench=. -count=10 >"$bench_file"; then
echo "Benchmarking failed for commit $commit"
exit 1
fi
bench_files+=("$bench_file")
done
# go install golang.org/x/perf/cmd/benchstat[@latest]
benchstat "${bench_files[@]}"
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