82 lines
2.8 KiB
Java
82 lines
2.8 KiB
Java
/*
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* Copyright (c) 2001, 2010, 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 4940372
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* @summary Ensure that the wakeup state is cleared by selectNow()
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*/
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import java.nio.channels.Pipe;
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import java.nio.channels.SelectionKey;
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import java.nio.channels.Selector;
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public class WakeupNow {
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public static void main(String[] args) throws Exception {
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test1();
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test2();
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}
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// Test if selectNow clears wakeup with the wakeup fd and
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// another fd in the selector.
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// This fails before the fix on Linux
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private static void test1() throws Exception {
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Selector sel = Selector.open();
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Pipe p = Pipe.open();
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p.source().configureBlocking(false);
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p.source().register(sel, SelectionKey.OP_READ);
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sel.wakeup();
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// ensure wakeup is consumed by selectNow
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Thread.sleep(2000);
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sel.selectNow();
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long startTime = System.nanoTime();
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int n = sel.select(2000);
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long endTime = System.nanoTime();
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p.source().close();
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p.sink().close();
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sel.close();
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long delta = endTime - startTime;
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if (delta < 1_000_000_000)
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throw new RuntimeException("test failed with delta " + delta);
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}
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// Test if selectNow clears wakeup with only the wakeup fd
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// in the selector.
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// This fails before the fix on Solaris
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private static void test2() throws Exception {
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Selector sel = Selector.open();
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sel.wakeup();
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// ensure wakeup is consumed by selectNow
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Thread.sleep(2000);
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sel.selectNow();
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long startTime = System.nanoTime();
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int n = sel.select(2000);
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long endTime = System.nanoTime();
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sel.close();
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long delta = endTime - startTime;
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if (delta < 1_000_000_000)
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throw new RuntimeException("test failed with delta " + delta);
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}
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}
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