/*
* Copyright 2012-2014 Institut National des Sciences Appliquées de Lyon (INSA-Lyon)
*
* 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
*
* 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 org.gololang.microbenchmarks.dispatch;
import org.gololang.microbenchmarks.support.CodeLoader;
import org.openjdk.jmh.annotations.*;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.util.HashSet;
import java.util.concurrent.TimeUnit;
import static java.lang.invoke.MethodType.genericMethodType;
import static java.lang.invoke.MethodType.methodType;
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
public class ClosureDispatchMicroBenchmark {
public static Object stringify(Object object) {
return object.toString();
}
public static Object dispatch_methodhandle(MethodHandle handle, Object argument) throws Throwable {
return handle.invokeExact(argument);
}
@State(Scope.Thread)
static public class JavaState {
MethodHandle stringifyHandle;
MethodHandle mhDispatchHandle;
@Setup
public void prepare() {
MethodHandles.Lookup lookup = MethodHandles.lookup();
try {
stringifyHandle = lookup.findStatic(ClosureDispatchMicroBenchmark.class, "stringify", genericMethodType(1));
mhDispatchHandle = lookup.findStatic(ClosureDispatchMicroBenchmark.class, "dispatch_methodhandle", methodType(Object.class, MethodHandle.class, Object.class));
} catch (NoSuchMethodException | IllegalAccessException e) {
throw new AssertionError(e);
}
}
}
@State(Scope.Thread)
static public class DataState {
Object argument = new HashSet<Object>() {
{
add(1);
add(2L);
add("3");
add(new Object());
}
};
}
@State(Scope.Thread)
static public class GoloState {
MethodHandle stringifyHandle;
MethodHandle target;
@Setup(Level.Trial)
public void prepare() {
MethodHandles.Lookup lookup = MethodHandles.lookup();
try {
stringifyHandle = lookup.findStatic(ClosureDispatchMicroBenchmark.class, "stringify", genericMethodType(1));
target = new CodeLoader().golo("dispatch", "closure_dispatch", 2);
} catch (NoSuchMethodException | IllegalAccessException e) {
throw new AssertionError(e);
}
}
}
@Benchmark
public Object baseline_java_mh_invokeExact(JavaState javaState, DataState dataState) throws Throwable {
return javaState.mhDispatchHandle.invokeExact(javaState.stringifyHandle, dataState.argument);
}
@Benchmark
public Object golo_closure_dispatch(GoloState goloState, DataState dataState) throws Throwable {
return goloState.target.invokeExact((Object) goloState.stringifyHandle, dataState.argument);
}
}