package org.openjdk.gcbench.roots;

import org.openjdk.jmh.annotations.*;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;

@Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@Fork(1)
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Threads(Threads.MAX)
@State(Scope.Benchmark)
public class Strings {

    List<String> list;

    @Param({"100000"})
    private int size;

    @Setup
    public void setup() {
        list = new ArrayList<>();
        for (int c = 0; c < size; c++) {
            String s = "" + c + "root";
            list.add(s.intern());
        }
    }

    @Benchmark
    public Object test() throws InterruptedException {
        // allocation pressure to trigger GCs
        return new byte[64];
    }

}