spring ApplicationContextExpressionBenchmark 源码
spring ApplicationContextExpressionBenchmark 代码
文件路径：/spring-context/src/jmh/java/org/springframework/context/expression/ApplicationContextExpressionBenchmark.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.context.expression;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
import org.openjdk.jmh.infra.Blackhole;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.testfixture.beans.TestBean;
import org.springframework.context.support.GenericApplicationContext;
/**
* Benchmark for application context expressions resolution during prototype bean creation.
* @author Brian Clozel
*/
@BenchmarkMode(Mode.Throughput)
public class ApplicationContextExpressionBenchmark {
@State(Scope.Benchmark)
public static class BenchmarkState {
public GenericApplicationContext context;
@Setup
public void setup() {
System.getProperties().put("name", "juergen");
System.getProperties().put("country", "UK");
this.context = new GenericApplicationContext();
RootBeanDefinition rbd = new RootBeanDefinition(TestBean.class);
rbd.setScope(BeanDefinition.SCOPE_PROTOTYPE);
rbd.getConstructorArgumentValues().addGenericArgumentValue("#{systemProperties.name}");
rbd.getPropertyValues().add("country", "#{systemProperties.country}");
this.context.registerBeanDefinition("test", rbd);
this.context.refresh();
}
@TearDown
public void teardown() {
System.getProperties().remove("country");
System.getProperties().remove("name");
}
}
@Benchmark
public void prototypeCreationWithSystemProperties(BenchmarkState state, Blackhole bh) {
TestBean tb = (TestBean) state.context.getBean("test");
bh.consume(tb.getName());
bh.consume(tb.getCountry());
}
}
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