87 lines
3.5 KiB
Java
87 lines
3.5 KiB
Java
/*
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* Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8006395 8012244
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* @summary Tests racing code that reads and closes a Socket
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*/
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import java.io.InputStream;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.ServerSocket;
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import java.net.Socket;
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import java.net.ConnectException;
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import java.net.SocketException;
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import java.util.concurrent.Phaser;
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// Racey test, will not always fail, but if it does then we have a problem.
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public class Race {
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final static int THREADS = 100;
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public static void main(String[] args) throws Exception {
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try (ServerSocket ss = new ServerSocket()) {
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InetAddress loopback = InetAddress.getLoopbackAddress();
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ss.bind(new InetSocketAddress(loopback, 0));
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final int port = ss.getLocalPort();
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final Phaser phaser = new Phaser(THREADS + 1);
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for (int i=0; i<100; i++) {
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try {
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final Socket s = new Socket(loopback, port);
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s.setSoLinger(false, 0);
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try (Socket sa = ss.accept()) {
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sa.setSoLinger(false, 0);
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final InputStream is = s.getInputStream();
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Thread[] threads = new Thread[THREADS];
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for (int j=0; j<THREADS; j++) {
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threads[j] = new Thread() {
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public void run() {
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try {
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phaser.arriveAndAwaitAdvance();
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while (is.read() != -1)
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Thread.sleep(50);
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} catch (Exception x) {
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if (!(x instanceof SocketException
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&& x.getMessage().equalsIgnoreCase("socket closed")))
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x.printStackTrace();
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// ok, expect Socket closed
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}
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}};
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}
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for (int j=0; j<100; j++)
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threads[j].start();
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phaser.arriveAndAwaitAdvance();
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s.close();
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for (int j=0; j<100; j++)
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threads[j].join();
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}
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} catch (ConnectException e) {
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System.err.println("Exception " + e + " Port: " + port);
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}
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}
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}
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}
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}
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