/* * Copyright (c) 2013, 2019, 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. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/
/* * @test * @bug 8006395 8012244 * @summary Tests racing code that reads and closes a Socket
*/
// Racey test, will not always fail, but if it does then we have a problem.
publicclass Race { finalstaticint THREADS = 100;
publicstaticvoid main(String[] args) throws Exception { try (ServerSocket ss = new ServerSocket()) {
InetAddress loopback = InetAddress.getLoopbackAddress();
ss.bind(new InetSocketAddress(loopback, 0)); finalint port = ss.getLocalPort(); final Phaser phaser = new Phaser(THREADS + 1); for (int i=0; i<100; i++) { try { final Socket s = new Socket(loopback, port);
s.setSoLinger(false, 0); try (Socket sa = ss.accept()) {
sa.setSoLinger(false, 0); final InputStream is = s.getInputStream(); Thread[] threads = newThread[THREADS]; for (int j=0; j<THREADS; j++) {
threads[j] = newThread() { publicvoid 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);
}
}
}
}
}
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