94 lines
3.3 KiB
Java
94 lines
3.3 KiB
Java
/*
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* Copyright (c) 2002, 2012, 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 4755720
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* @summary Test if OP_READ is detected with OP_WRITE in interestOps
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*/
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import java.net.*;
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import java.nio.*;
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import java.nio.channels.*;
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import java.util.*;
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public class OpRead {
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static void test() throws Exception {
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ServerSocketChannel ssc = null;
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SocketChannel sc = null;
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SocketChannel peer = null;
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try {
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ssc = ServerSocketChannel.open().bind(new InetSocketAddress(0));
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// loopback connection
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InetAddress lh = InetAddress.getLocalHost();
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sc = SocketChannel.open(new InetSocketAddress(lh, ssc.socket().getLocalPort()));
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peer = ssc.accept();
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// peer sends message so that "sc" will be readable
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int n = peer.write(ByteBuffer.wrap("Hello".getBytes()));
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assert n > 0;
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sc.configureBlocking(false);
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Selector selector = Selector.open();
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SelectionKey key = sc.register(selector, SelectionKey.OP_READ |
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SelectionKey.OP_WRITE);
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boolean done = false;
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int failCount = 0;
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while (!done) {
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int nSelected = selector.select();
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if (nSelected > 0) {
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if (nSelected > 1)
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throw new RuntimeException("More than one channel selected");
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Set<SelectionKey> keys = selector.selectedKeys();
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Iterator<SelectionKey> iterator = keys.iterator();
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while (iterator.hasNext()) {
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key = iterator.next();
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iterator.remove();
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if (key.isWritable()) {
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failCount++;
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if (failCount > 10)
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throw new RuntimeException("Test failed");
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Thread.sleep(250);
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}
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if (key.isReadable()) {
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done = true;
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}
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}
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}
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}
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} finally {
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if (peer != null) peer.close();
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if (sc != null) sc.close();
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if (ssc != null) ssc.close();
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}
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}
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public static void main(String[] args) throws Exception {
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test();
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}
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}
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