#!/bin/sh

set -eu

cd "$(dirname "$0")" || exit 1

if test "$#" -ne 0; then
	echo "usage: bench.sh" >&2
	exit 1
fi

strans_pid=
perf_pid=

cleanup()
{
	status=$?
	trap - 0 1 2 15
	if test -n "$perf_pid"; then
		kill -INT "$perf_pid" 2>/dev/null || :
		wait "$perf_pid" 2>/dev/null || :
	fi
	if test -n "$strans_pid"; then
		kill "$strans_pid" 2>/dev/null || :
		wait "$strans_pid" 2>/dev/null || :
	fi
	exit "$status"
}

trap cleanup 0
trap 'exit 129' 1
trap 'exit 130' 2
trap 'exit 143' 15

./strans map &
strans_pid=$!

# The daemon is ready once the benchmark client can complete a round.
attempt=0
until ./bench/bench bench/bench.keys 1 >/dev/null 2>&1; do
	if ! kill -0 "$strans_pid" 2>/dev/null; then
		echo "bench.sh: daemon exited before accepting IPC clients" >&2
		exit 1
	fi
	attempt=$((attempt + 1))
	if test "$attempt" -ge 50; then
		echo "bench.sh: daemon did not accept IPC clients within 10 seconds" >&2
		exit 1
	fi
	sleep 0.2
done

# warm up the renderer
./bench/bench bench/bench.keys 100
echo "renderer warmed up"

perf record -g -o bench/perf.data -p "$strans_pid" &
perf_pid=$!
sleep 1
kill -0 "$perf_pid"

./bench/bench bench/bench.keys 100

kill -INT "$perf_pid"
wait "$perf_pid" 2>/dev/null || :
perf_pid=