85 lines
2.8 KiB
Bash
Executable file
85 lines
2.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
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# See LICENSE.md for license information.
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# SPDX-License-Identifier: MIT
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#
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# Headless UBER perf capture for DOS (DOSBox, 386SX-16 timing).
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#
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# Mounts build/dos/bin as C: in a headless DOSBox (Xvfb), runs UBER.EXE
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# (which writes JOEYLOG.TXT to its CWD == C: == the host bin dir), polls
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# that log for UBER's "press any key to exit" completion marker, then
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# kills DOSBox. build/tools/uberPerfTable reads build/dos/bin/JOEYLOG.TXT.
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#
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# Uses the same dosbox-386sx16.conf as joey-run so the cycle budget
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# matches the claudeDocs/PERF.md reference machine.
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#
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# scripts/bench-dos.sh # default 90s timeout
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# TIMEOUT=120 scripts/bench-dos.sh # override
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set -euo pipefail
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repo=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
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source "$repo/scripts/lib/joeyEnv.sh"
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joeyNeed DOSBOX dosbox
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bin_dir=$repo/build/dos/bin
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conf=$repo/scripts/dosbox-386sx16.conf
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log=$bin_dir/JOEYLOG.TXT
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timeout_s=${TIMEOUT:-90}
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if [[ ! -f $bin_dir/UBER.EXE ]]; then
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echo "UBER.EXE not built. Run 'make dos' first." >&2
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exit 1
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fi
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rm -f "$log" "$bin_dir/joeylog.txt"
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work=$(mktemp -d -t joeylib-bench-dos.XXXXXX)
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display=:$((90 + RANDOM % 9))
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Xvfb "$display" -screen 0 800x600x24 -nolisten tcp >/dev/null 2>&1 &
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xvfb_pid=$!
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sleep 0.4
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cleanup() {
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joeyStop "$dosbox_pid"
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kill "$xvfb_pid" 2>/dev/null || true
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wait 2>/dev/null || true
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rm -rf "$work"
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}
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trap cleanup EXIT
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echo "bench-dos: running UBER headless (timeout ${timeout_s}s)..." >&2
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# Mount with an explicit -c, NOT the positional path: DOSBox runs every
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# -c line BEFORE it auto-mounts the trailing directory, so "C:" and
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# "UBER.EXE" ran against a drive that did not exist yet ("Drive C does
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# not exist!" / "Illegal command") and the run sat at Z:\> until the
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# timeout with no JOEYLOG.TXT.
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XDG_CONFIG_HOME="$work/xdg" DISPLAY=$display "$DOSBOX" "${JOEY_DOSBOX_ISOLATE[@]}" \
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--conf "$conf" \
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-c "MOUNT C \"$bin_dir\"" \
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-c "C:" \
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-c "UBER.EXE" \
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>"$work/dosbox.log" 2>&1 &
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dosbox_pid=$!
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waited=0
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while (( waited < timeout_s )); do
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if [[ -f $log ]] && grep -q "press any key to exit" "$log" 2>/dev/null; then
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break
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fi
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sleep 1
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(( waited++ )) || true
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done
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if [[ ! -f $log ]]; then
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echo "bench-dos: FAIL -- no JOEYLOG.TXT produced" >&2
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exit 1
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fi
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# uberPerfTable reads build/dos/bin/JOEYLOG.TXT directly (uppercase).
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ops=$(grep -c "ops/sec" "$log" || true)
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done_marker=$(grep -c "press any key to exit" "$log" || true)
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if (( done_marker == 0 )); then
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echo "bench-dos: WARNING -- timed out before completion marker (partial capture)" >&2
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fi
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echo "bench-dos: captured $ops op lines (complete=$done_marker) in ${waited}s" >&2
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echo " -> $log" >&2
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grep "UBER:" "$log" | sed 's/ | hash=.*//' || true
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