spring DefaultListableBeanFactoryBenchmark 源码

spring DefaultListableBeanFactoryBenchmark 代码

文件路径：/spring-beans/src/jmh/java/org/springframework/beans/factory/DefaultListableBeanFactoryBenchmark.java

/*
 * Copyright 2002-2020 the original author or authors.
 *
 * Licensed 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
 *
 *      https://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 org.springframework.beans.factory;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
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.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.RuntimeBeanReference;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.testfixture.beans.LifecycleBean;
import org.springframework.beans.testfixture.beans.TestBean;

/**
 * Benchmark for retrieving various bean types from the {@link DefaultListableBeanFactory}.
 *
 * @author Brian Clozel
 */
@BenchmarkMode(Mode.Throughput)
public class DefaultListableBeanFactoryBenchmark {

	public static class Shared {
		public DefaultListableBeanFactory beanFactory;
	}

	@State(Scope.Benchmark)
	public static class PrototypeCreationState extends Shared {

		@Param({"simple", "dependencyCheck", "constructor", "constructorArgument", "properties", "resolvedProperties"})
		public String mode;

		@Setup
		public void setup() {
			this.beanFactory = new DefaultListableBeanFactory();
			RootBeanDefinition rbd = new RootBeanDefinition(TestBean.class);

			switch (this.mode) {
				case "simple":
					break;
				case "dependencyCheck":
					rbd = new RootBeanDefinition(LifecycleBean.class);
					rbd.setDependencyCheck(RootBeanDefinition.DEPENDENCY_CHECK_OBJECTS);
					this.beanFactory.addBeanPostProcessor(new LifecycleBean.PostProcessor());
					break;
				case "constructor":
					rbd.getConstructorArgumentValues().addGenericArgumentValue("juergen");
					rbd.getConstructorArgumentValues().addGenericArgumentValue("99");
					break;
				case "constructorArgument":
					rbd.getConstructorArgumentValues().addGenericArgumentValue(new RuntimeBeanReference("spouse"));
					this.beanFactory.registerBeanDefinition("test", rbd);
					this.beanFactory.registerBeanDefinition("spouse", new RootBeanDefinition(TestBean.class));
					break;
				case "properties":
					rbd.getPropertyValues().add("name", "juergen");
					rbd.getPropertyValues().add("age", "99");
					break;
				case "resolvedProperties":
					rbd.getPropertyValues().add("spouse", new RuntimeBeanReference("spouse"));
					this.beanFactory.registerBeanDefinition("spouse", new RootBeanDefinition(TestBean.class));
					break;
			}
			rbd.setScope(BeanDefinition.SCOPE_PROTOTYPE);
			this.beanFactory.registerBeanDefinition("test", rbd);
			this.beanFactory.freezeConfiguration();
		}

	}

	@Benchmark
	public Object prototypeCreation(PrototypeCreationState state) {
		return state.beanFactory.getBean("test");
	}

	@State(Scope.Benchmark)
	public static class SingletonLookupState extends Shared {

		@Setup
		public void setup() {
			this.beanFactory = new DefaultListableBeanFactory();
			this.beanFactory.registerBeanDefinition("test", new RootBeanDefinition(TestBean.class));
			this.beanFactory.freezeConfiguration();
		}
	}

	@Benchmark
	public Object singletLookup(SingletonLookupState state) {
		return state.beanFactory.getBean("test");
	}

	@Benchmark
	public Object singletLookupByType(SingletonLookupState state) {
		return state.beanFactory.getBean(TestBean.class);
	}

	@State(Scope.Benchmark)
	public static class SingletonLookupManyBeansState extends Shared {

		@Setup
		public void setup() {
			this.beanFactory = new DefaultListableBeanFactory();
			this.beanFactory.registerBeanDefinition("test", new RootBeanDefinition(TestBean.class));
			for (int i = 0; i < 1000; i++) {
				this.beanFactory.registerBeanDefinition("a" + i, new RootBeanDefinition(A.class));
			}
			this.beanFactory.freezeConfiguration();
		}
	}

	// See SPR-6870
	@Benchmark
	public Object singletLookupByTypeManyBeans(SingletonLookupState state) {
		return state.beanFactory.getBean(B.class);
	}

	static class A {
	}

	static class B {
	}

}

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