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swift-test-bench.sh: stream build output so a long build is not stopped as a hung measurement #27395

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Merged
teamleaderleo merged 2 commits into from
Oct 29, 2026
Merged

swift-test-bench.sh: stream build output so a long build is not stopped as a hung measurement #27395

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bcda9f5
swift-test-bench.sh: stream build output to the step log
teamleaderleo Oct 29, 2026
d2a2c0b
swift-test-bench.sh: fail when a build log cannot be written
teamleaderleo Oct 29, 2026
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25 changes: 20 additions & 5 deletions scripts/measure/swift-test-bench.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -155,18 +155,33 @@ main() {
# CmuxMobileKit names a local xcframework (a Package.swift binaryTarget) that
# SwiftPM needs on disk even for a macOS build; it is built, not checked in.
local t0=$SECONDS
# Build output goes to the step log as it comes: a measurement that prints
# nothing for 45 min is stopped as hung (the fleet's measure silence limit),
# and a real hang then shows where it stopped.
if [[ "$package" == cmux-next-ios/CmuxMobileKit ]]; then
JOBS="$(sysctl -n hw.ncpu)" bash cmux-next-ios/rust/scripts/build-xcframework.sh >"$work/ffi.log" 2>&1 ||
{ tail -60 "$work/ffi.log"; echo "swift-test-bench.sh: CmuxMobileLinkFFI.xcframework build failed" >&2; exit 1; }
local ffi_status
set +e
JOBS="$(sysctl -n hw.ncpu)" bash cmux-next-ios/rust/scripts/build-xcframework.sh 2>&1 | tee "$work/ffi.log"
local -a ffi_pipe=("${PIPESTATUS[@]}")
set -e
ffi_status=${ffi_pipe[0]}
[[ ${ffi_pipe[1]} -eq 0 ]] || { echo "swift-test-bench.sh: could not write $work/ffi.log" >&2; exit 3; }
[[ $ffi_status -eq 0 ]] || { echo "swift-test-bench.sh: CmuxMobileLinkFFI.xcframework build failed (exit $ffi_status)" >&2; exit 1; }
# The script regenerates checked-in bindings; any difference is the tree's, not the run's.
git diff --stat -- cmux-next-ios/ | tee -a "$report"
note "- CmuxMobileLinkFFI.xcframework: built in $((SECONDS - t0)) s"
fi
t0=$SECONDS
if ! swift build --package-path "$package" --build-tests >"$work/build.log" 2>&1; then
local build_status
set +e
swift build --package-path "$package" --build-tests 2>&1 | tee "$work/build.log"
local -a build_pipe=("${PIPESTATUS[@]}")
set -e
build_status=${build_pipe[0]}
[[ ${build_pipe[1]} -eq 0 ]] || { echo "swift-test-bench.sh: could not write $work/build.log" >&2; exit 3; }
if [[ $build_status -ne 0 ]]; then
grep -E "error:" "$work/build.log" | sort -u | head -40 || true
tail -40 "$work/build.log"
note "- build: failed after $((SECONDS - t0)) s"
note "- build: failed (exit $build_status) after $((SECONDS - t0)) s"
exit 1
fi
note "- build: $((SECONDS - t0)) s"
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