84 lines
3.0 KiB
Java
84 lines
3.0 KiB
Java
/*
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* Copyright (c) 2004, 2018, 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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/* @test
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* @bug 4729342
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* @library /test/lib
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* @build jdk.test.lib.Utils
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* @run main SelectAndCancel
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* @summary Check for CancelledKeyException when key cancelled during select
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*/
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.nio.channels.SelectionKey;
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import java.nio.channels.Selector;
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import java.nio.channels.ServerSocketChannel;
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import java.util.concurrent.CountDownLatch;
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public class SelectAndCancel {
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static volatile SelectionKey sk;
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static volatile Throwable ex;
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/*
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* CancelledKeyException is the failure symptom of 4729342
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* NOTE: The failure is timing dependent and is not always
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* seen immediately when the bug is present.
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*/
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public static void main(String[] args) throws Throwable {
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final Selector selector = Selector.open();
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final ServerSocketChannel ssc = ServerSocketChannel.open().bind(
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new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
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final InetSocketAddress isa = (InetSocketAddress)ssc.getLocalAddress();
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final CountDownLatch signal = new CountDownLatch(1);
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// Create and start a selector in a separate thread.
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Thread t = new Thread(new Runnable() {
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public void run() {
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try {
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ssc.configureBlocking(false);
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sk = ssc.register(selector, SelectionKey.OP_ACCEPT);
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signal.countDown();
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selector.select();
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} catch (Throwable e) {
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ex = e;
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}
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}
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});
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t.start();
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signal.await();
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// Wait for above thread to get to select() before we call cancel.
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Thread.sleep((long)(300 * jdk.test.lib.Utils.TIMEOUT_FACTOR));
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// CancelledKeyException should not be thrown.
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ssc.close();
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sk.cancel();
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selector.close();
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t.join();
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if (ex != null) {
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throw ex;
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}
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}
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}
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