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package benchmark;

import graphql.execution.instrumentation.dataloader.LevelMap;

import org.openjdk.jmh.annotations.Benchmark;

import org.openjdk.jmh.annotations.BenchmarkMode;

import org.openjdk.jmh.annotations.Measurement;

import org.openjdk.jmh.annotations.Mode;

import org.openjdk.jmh.annotations.Scope;

import org.openjdk.jmh.annotations.State;

import org.openjdk.jmh.annotations.Warmup;

import org.openjdk.jmh.infra.Blackhole;

import java.util.LinkedHashMap;

import java.util.Map;

import java.util.concurrent.TimeUnit;

@State(Scope.Benchmark)

@BenchmarkMode(Mode.Throughput)

@Warmup(iterations = 2)

@Measurement(iterations = 2, timeUnit = TimeUnit.NANOSECONDS)

public class IntMapBenchmark {

@Benchmark

public void benchmarkLinkedHashMap(Blackhole blackhole) {

Map<Integer, Integer> result = new LinkedHashMap<>();

for (int i = 0; i < 30; i++) {

int level = i % 10;

int count = i * 2;

result.put(level, result.getOrDefault(level, 0) + count);

blackhole.consume(result.get(level));

}

}

@Benchmark

public void benchmarkIntMap(Blackhole blackhole) {

LevelMap result = new LevelMap(16);

for (int i = 0; i < 30; i++) {

int level = i % 10;

int count = i * 2;

result.increment(level, count);

blackhole.consume(result.get(level));

}

}

}