/*

 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 * questions.

 */

/*

 * @test

 * @bug 8006395 8012244

 * @summary Tests racing code that reads and closes a Socket

 */

import java.io.InputStream;

import java.net.ServerSocket;

import java.net.Socket;

import java.net.ConnectException;

import java.net.SocketException;

import java.util.concurrent.Phaser;

// Racey test, will not always fail, but if it does then we have a problem.

public class Race {

    final static int THREADS = 100;

    public static void main(String[] args) throws Exception {

        try (ServerSocket ss = new ServerSocket(0)) {

            final int port = ss.getLocalPort();

            final Phaser phaser = new Phaser(THREADS + 1);

            for (int i=0; i<100; i++) {

                try {

                    final Socket s = new Socket("localhost", port);

                    s.setSoLinger(false, 0);

                    try (Socket sa = ss.accept()) {

                        sa.setSoLinger(false, 0);

                        final InputStream is = s.getInputStream();

                        Thread[] threads = new Thread[THREADS];

                        for (int j=0; j<THREADS; j++) {

                            threads[j] = new Thread() {

                            public void run() {

                                try {

                                    phaser.arriveAndAwaitAdvance();

                                    while (is.read() != -1)

                                        Thread.sleep(50);

                                } catch (Exception x) {

                                    if (!(x instanceof SocketException

                                          && x.getMessage().equalsIgnoreCase("socket closed")))

                                        x.printStackTrace();

                                    // ok, expect Socket closed

                                }

                            }};

                        }

                        for (int j=0; j<100; j++)

                            threads[j].start();

                        phaser.arriveAndAwaitAdvance();

                        s.close();

                        for (int j=0; j<100; j++)

                            threads[j].join();

                    }

                } catch (ConnectException e) {

                    System.err.println("Exception " + e + " Port: " + port);

                }

            }

        }

    }

}