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Testes de performance entre Reflection e Invoker do Java 7
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package br.com.caelum.vraptor.benchmark; | |
import java.lang.invoke.MethodHandle; | |
import java.lang.reflect.Method; | |
import java.util.concurrent.TimeUnit; | |
import org.openjdk.jmh.annotations.BenchmarkMode; | |
import org.openjdk.jmh.annotations.GenerateMicroBenchmark; | |
import org.openjdk.jmh.annotations.Measurement; | |
import org.openjdk.jmh.annotations.Mode; | |
import org.openjdk.jmh.annotations.OutputTimeUnit; | |
import org.openjdk.jmh.annotations.Scope; | |
import org.openjdk.jmh.annotations.Setup; | |
import org.openjdk.jmh.annotations.State; | |
import org.openjdk.jmh.annotations.Warmup; | |
import org.openjdk.jmh.logic.BlackHole; | |
@BenchmarkMode(Mode.AverageTime) | |
@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS) | |
@Measurement(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS) | |
@OutputTimeUnit(TimeUnit.NANOSECONDS) | |
@State(Scope.Thread) | |
public class InvokerReflectionTest { | |
private Method method; | |
private MethodHandle mhandle; | |
static class Dog { | |
public String run() { | |
return "runing"; | |
} | |
} | |
@Setup | |
public void setup() | |
throws Exception { | |
method = Dog.class.getDeclaredMethod("run"); | |
mhandle = new MethodHandleFactory().create(Dog.class, method); | |
} | |
@GenerateMicroBenchmark | |
public void withReflection(BlackHole bh) | |
throws Throwable { | |
bh.consume(method.invoke(new Dog())); | |
} | |
@GenerateMicroBenchmark | |
public void withInvoker(BlackHole bh) | |
throws Throwable { | |
bh.consume(mhandle.invokeExact((Object) new Dog(), new Object[0])); | |
} | |
} |
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