mclo.gs

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import org.openjdk.jmh.annotations.*;

import org.openjdk.jmh.infra.Blackhole;

import org.openjdk.jmh.runner.Runner;

import org.openjdk.jmh.runner.options.Options;

import org.openjdk.jmh.runner.options.OptionsBuilder;

import java.util.ArrayDeque;

import java.util.Random;

import java.util.concurrent.TimeUnit;

@BenchmarkMode(Mode.Throughput)

@OutputTimeUnit(TimeUnit.MICROSECONDS)

@State(Scope.Thread)

@Fork(1)

@Warmup(iterations = 3, time = 10)

@Measurement(iterations = 5, time = 10)

public class ListBenchmark {

@Param({"65536"})

private int capacity;

private EvictingRingList<Integer> ringList;

private ArrayDeque<Integer> arrayDeque;

private int[] indices;

@Setup

public void setup() {

ringList = new EvictingRingList<>(capacity);

arrayDeque = new ArrayDeque<>(capacity);

Random random = new Random(42);

indices = new int[1000];

for (int i = 0; i < 1000; i++) {

indices[i] = random.nextInt(capacity);

}

for (int i = 0; i < capacity; i++) {

ringList.add(i);

arrayDeque.add(i);

}

@Benchmark

public void testAdd(Blackhole bh) {

ringList.add(100);

bh.consume(ringList);

}

@Benchmark

public void testArrayDequeAddManualEvict(Blackhole bh) {

if (arrayDeque.size() >= capacity) {

arrayDeque.removeFirst();

}

arrayDeque.addLast(100);

bh.consume(arrayDeque);

}

mclo.gs

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