89 lines
2.8 KiB
Java
89 lines
2.8 KiB
Java
/*
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* Copyright (c) 1998, 2022, 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 4156625
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@summary Socket.setSoTimeout(T) can cause incorrect delay of T
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under green threads
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@author Tom Rodriguez
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*/
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/*
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* This program depends a bit on the particular behaviour of the green
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* threads scheduler to produce the problem, but given that the underlying
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* bug a green threads bug, I think that's OK.
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*/
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import java.net.*;
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public class SoTimeout implements Runnable {
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static ServerSocket serverSocket;
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static long timeWritten;
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static InetAddress addr;
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static int port;
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public static void main(String[] args) throws Exception {
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addr = InetAddress.getLocalHost();
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serverSocket = new ServerSocket();
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serverSocket.bind(new InetSocketAddress(addr, 0));
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port = serverSocket.getLocalPort();
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byte[] b = new byte[12];
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Thread t = new Thread(new SoTimeout());
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t.start();
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Socket s = serverSocket.accept();
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serverSocket.close();
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// set a 5 second timeout on the socket
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s.setSoTimeout(5000);
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s.getInputStream().read(b, 0, b.length);
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s.close();
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long waited = System.currentTimeMillis() - timeWritten;
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// this sequence should complete fairly quickly and if it
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// takes something resembling the SoTimeout value then
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// we are probably incorrectly blocking and not waking up
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if (waited > 2000) {
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throw new Exception("shouldn't take " + waited + " to complete");
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}
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}
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public void run() {
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try {
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byte[] b = new byte[12];
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Socket s = new Socket(addr, port);
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Thread.yield();
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timeWritten = System.currentTimeMillis();
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s.getOutputStream().write(b, 0, 12);
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s.close();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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