#!/usr/bin/env bash
# Inner-loop evaluation scaling curve: runs `inner_loop` at thread counts 1, 2, 4, 8, 16
# and prints one JSON line per thread count. Fixtures are the committed dumps under
# `bench/fixtures/` (regenerate with `cargo run --release --bin gen_fixtures`).
#
# Usage: bench/run-inner-loop.sh [seconds-per-run]
set -euo pipefail

BENCH_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
export CARGO_TARGET_DIR="$BENCH_DIR/target"
BIN="$CARGO_TARGET_DIR/release/inner_loop"
SECONDS_PER_RUN="${1:-2}"

cargo build --release --manifest-path "$BENCH_DIR/Cargo.toml" --bin inner_loop >/dev/null

for t in 1 2 4 8 16; do
  echo "load before threads=$t: $(uptime)" >&2
  "$BIN" --threads "$t" --seconds "$SECONDS_PER_RUN" | tail -n1
done