// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: MIT

package engine

import (
	"fmt"
	"testing"
)

// BenchmarkPoolRoundTrip measures the full borrow/return cycle at the
// sizes the kernels actually request, including the clear-on-borrow
// cost the pool contract pays. Run before and after touching the pool.
func BenchmarkPoolRoundTrip(b *testing.B) {
	for _, n := range []int{64, 4096, 262144} {
		b.Run(fmt.Sprintf("n=%d", n), func(b *testing.B) {
			b.ReportAllocs()
			for b.Loop() {
				buf := GetFloat64Buf(n)
				buf[0] = 1 // touch one slot: prove the buffer is writable
				PutFloat64Buf(buf)
			}
		})
	}
}