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Java example source code file (UdtNative.java)

This example Java source code file (UdtNative.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

atomicboolean, benchxfer, bytebuffer, countdownlatch, exception, executors, executorservice, inetsocketaddress, list, net, network, nio, override, param, runnable, socketudt, string, threading, threads, util

The UdtNative.java Java example source code

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 io.netty.test.udt.bench.xfer;

import com.barchart.udt.SocketUDT;
import com.barchart.udt.StatusUDT;
import com.barchart.udt.TypeUDT;
import com.google.caliper.Param;

import io.netty.test.udt.bench.BenchXfer;
import io.netty.test.udt.util.CaliperRunner;
import io.netty.test.udt.util.TrafficControl;

import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicBoolean;

import static io.netty.test.udt.util.UnitHelp.*;

/**
 * perform two way native UDT socket send/recv
 */
public class UdtNative extends BenchXfer {

    @Param
    private volatile int latency;

    protected static List<String> latencyValues() {
        return BenchXfer.latencyList();
    }

    @Param
    private volatile int message;

    protected static List<String> messageValues() {
        return BenchXfer.messageList();
    }

    @Param
    private volatile int duration;

    protected static List<String> durationValues() {
        return BenchXfer.durationList();
    }

    private volatile SocketUDT peer1;
    private volatile SocketUDT peer2;

    @Override
    protected void setUp() throws Exception {
        log.info("init");

        TrafficControl.delay(latency);

        final InetSocketAddress addr1 = localSocketAddress();
        final InetSocketAddress addr2 = localSocketAddress();

        peer1 = new SocketUDT(TypeUDT.DATAGRAM);
        peer2 = new SocketUDT(TypeUDT.DATAGRAM);

        peer1.setBlocking(false);
        peer2.setBlocking(false);

        peer1.setRendezvous(true);
        peer2.setRendezvous(true);

        peer1.bind(addr1);
        peer2.bind(addr2);

        socketAwait(peer1, StatusUDT.OPENED);
        socketAwait(peer2, StatusUDT.OPENED);

        peer1.connect(addr2);
        peer2.connect(addr1);

        socketAwait(peer1, StatusUDT.CONNECTED);
        socketAwait(peer2, StatusUDT.CONNECTED);

        peer1.setBlocking(true);
        peer2.setBlocking(true);

        super.setUp();
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();

        peer1.setBlocking(false);
        peer2.setBlocking(false);

        peer1.close();
        peer2.close();

        socketAwait(peer1, StatusUDT.CLOSED, StatusUDT.BROKEN);
        socketAwait(peer2, StatusUDT.CLOSED, StatusUDT.BROKEN);

        TrafficControl.delay(0);

        log.info("done");
    }

    /** benchmark invocation */
    public void timeMain(final int reps) throws Exception {

        final int threadCount = 4;

        final CountDownLatch completion = new CountDownLatch(threadCount);

        final AtomicBoolean isOn = new AtomicBoolean(true);

        final Runnable sendPeer1 = new Runnable() {

            @Override
            public void run() {
                try {
                    while (isOn.get()) {
                        runCore();
                    }
                } catch (final Exception e) {
                    log.error("", e);
                } finally {
                    completion.countDown();
                }
            }

            final ByteBuffer buffer = ByteBuffer.allocateDirect(message);

            long sequence;

            void runCore() throws Exception {
                buffer.rewind();
                buffer.putLong(0, sequence++);
                final int count = peer1.send(buffer);
                if (count != message) {
                    throw new Exception("count");
                }
                measure().rate().mark(count);
            }
        };

        final Runnable sendPeer2 = new Runnable() {

            @Override
            public void run() {
                try {
                    while (isOn.get()) {
                        runCore();
                    }
                } catch (final Exception e) {
                    log.error("", e);
                } finally {
                    completion.countDown();
                }
            }

            final ByteBuffer buffer = ByteBuffer.allocateDirect(message);

            long sequence;

            void runCore() throws Exception {
                buffer.rewind();
                buffer.putLong(0, sequence++);
                final int count = peer2.send(buffer);
                if (count != message) {
                    throw new Exception("count");
                }
            }
        };

        final Runnable recvPeer1 = new Runnable() {

            @Override
            public void run() {
                try {
                    while (isOn.get()) {
                        runCore();
                    }
                } catch (final Exception e) {
                    log.error("", e);
                } finally {
                    completion.countDown();
                }
            }

            final ByteBuffer buffer = ByteBuffer.allocateDirect(message);

            long sequence;

            void runCore() throws Exception {
                buffer.rewind();
                final int count = peer1.receive(buffer);
                if (count != message) {
                    throw new Exception("count");
                }
                if (sequence ++ != buffer.getLong(0)) {
                    throw new Exception("sequence");
                }
            }
        };

        final Runnable recvPeer2 = new Runnable() {

            @Override
            public void run() {
                try {
                    while (isOn.get()) {
                        runCore();
                    }
                } catch (final Exception e) {
                    log.error("", e);
                } finally {
                    completion.countDown();
                }
            }

            final ByteBuffer buffer = ByteBuffer.allocateDirect(message);

            long sequence;

            void runCore() throws Exception {
                buffer.rewind();
                final int count = peer2.receive(buffer);
                if (count != message) {
                    throw new Exception("count");
                }
                if (sequence ++ != buffer.getLong(0)) {
                    throw new Exception("sequence");
                }
            }
        };

        final ExecutorService executor = Executors
                .newFixedThreadPool(threadCount);

        executor.submit(recvPeer1);
        executor.submit(recvPeer2);
        executor.submit(sendPeer1);
        executor.submit(sendPeer2);

        markWait(duration);

        isOn.set(false);

        completion.await();

        executor.shutdownNow();
    }

    public static void main(final String[] args) throws Exception {
        CaliperRunner.execute(UdtNative.class);
    }
}

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