/*
* 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 org.apache.ignite.internal.benchmarks.jmh.notify;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.LockSupport;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Group;
import org.openjdk.jmh.annotations.GroupThreads;
import org.openjdk.jmh.annotations.Level;
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;
/** */
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@BenchmarkMode({/*Mode.AverageTime,*/ Mode.Throughput})
@Warmup(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 10, timeUnit = TimeUnit.SECONDS)
@Fork(1)
@State(Scope.Group)
public class JmhParkVsNotifyBenchmark {
/** level of concurrency */
private static final int THREAD_COUNT = 16;
/** Thread. */
private volatile Thread thread;
/**
*
*/
@Setup(Level.Iteration)
public void setup() {
thread = null;
}
/**
*
*/
@Benchmark
@Group("park")
public void park() {
if (thread == null)
thread = Thread.currentThread();
LockSupport.park(thread);
}
/**
*
*/
@Benchmark
@GroupThreads(THREAD_COUNT)
@Group("park")
public void unpark() {
LockSupport.unpark(thread);
}
/** Mutex. */
private final Object mux = new Object();
/**
*
*/
@Benchmark
@Group("condition")
@GroupThreads(THREAD_COUNT)
public void notifyAll0() {
synchronized (mux) {
mux.notify();
}
}
/**
*
*/
@Benchmark
@Group("condition")
public void wait0() throws InterruptedException {
synchronized (mux) {
mux.wait();
}
}
}