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RecursiveMethodCallBenchmark.java
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RecursiveMethodCallBenchmark.java
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/*
* JVM Performance Benchmarks
*
* Copyright (C) 2019 - 2024 Ionut Balosin
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package com.ionutbalosin.jvm.performance.benchmarks.compiler;
import static com.ionutbalosin.jvm.performance.benchmarks.compiler.RecursiveMethodCallBenchmark.RInterface.itf_static;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
/*
* Recursive method calls benchmark where inlining heuristics play a fundamental role.
*/
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Warmup(iterations = 5, time = 10, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 10, timeUnit = TimeUnit.SECONDS)
@Fork(value = 5)
@State(Scope.Benchmark)
public class RecursiveMethodCallBenchmark {
// $ java -jar */*/benchmarks.jar ".*RecursiveMethodCallBenchmark.*"
private static final Object OBJECT = new Object();
private RInterface itf;
private Wrapper wrapper;
@Param({"256"})
int depth;
@Setup
public void setup() {
wrapper = new Wrapper(depth);
itf = new RInterface() {};
}
@Benchmark
public Object interface_non_static_method() {
return itf.itf_non_static(depth);
}
@Benchmark
public Object interface_static_method() {
return itf_static(depth);
}
@Benchmark
public Object class_non_static_method() {
return cls_non_static(depth);
}
@Benchmark
public Object class_static_method() {
return cls_static(depth);
}
@Benchmark
public Object lambda_non_static() {
return LAMBDA_NON_STATIC.apply(wrapper);
}
@Benchmark
public Object lambda_static() {
return LAMBDA_STATIC.apply(wrapper);
}
private Object cls_non_static(int depth) {
if (depth == 0) {
return OBJECT;
}
return cls_non_static(depth - 1);
}
private static Object cls_static(int depth) {
if (depth == 0) {
return OBJECT;
}
return cls_static(depth - 1);
}
interface RInterface {
default Object itf_non_static(int depth) {
if (depth == 0) {
return OBJECT;
}
return itf_non_static(depth - 1);
}
static Object itf_static(int depth) {
if (depth == 0) {
return OBJECT;
}
return itf_static(depth - 1);
}
}
private final Function<Wrapper, Object> LAMBDA_NON_STATIC =
(wrapper) -> {
if (wrapper.depth == 0) {
return OBJECT;
}
return this.LAMBDA_NON_STATIC.apply(wrapper.decrementAndGet());
};
private static final Function<Wrapper, Object> LAMBDA_STATIC =
(wrapper) -> {
if (wrapper.depth == 0) {
return OBJECT;
}
return RecursiveMethodCallBenchmark.LAMBDA_STATIC.apply(wrapper.decrementAndGet());
};
private static class Wrapper {
private int depth;
public Wrapper(int depth) {
this.depth = depth;
}
public Wrapper decrementAndGet() {
this.depth = this.depth - 1;
return this;
}
}
}