107 lines
3.2 KiB
Java
107 lines
3.2 KiB
Java
/*
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* Copyright (c) 2002, 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 4777504
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* @summary Ensure that a Selector can return at least 100 selected keys
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* @author Mark Reinhold
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* @library ..
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* @build SelectorLimit
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* @run main/othervm SelectorLimit
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*/
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import java.io.*;
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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 SelectorLimit {
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static PrintStream log = System.err;
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static class Listener
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extends TestThread
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{
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volatile int count = 0;
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private ServerSocketChannel ssc;
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Listener(ServerSocketChannel ssc) {
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super("Listener");
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this.ssc = ssc;
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}
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void go() throws IOException {
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for (;;) {
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ssc.accept();
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count++;
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}
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}
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}
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static final int N_KEYS = 500;
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static final int MIN_KEYS = 100;
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public static void main(String[] args) throws Exception {
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// win9X can't handle many connections at once
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String osName = System.getProperty("os.name");
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if (osName.toLowerCase().startsWith("win")) {
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if (!(osName.equals("Windows NT")
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|| osName.equals("Windows 2000")
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|| osName.equals("Windows XP")))
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return;
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}
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ServerSocketChannel ssc = ServerSocketChannel.open();
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TestUtil.bind(ssc);
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Listener lth = new Listener(ssc);
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lth.start();
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Selector sel = Selector.open();
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SocketChannel[] sca = new SocketChannel[N_KEYS];
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for (int i = 0; i < N_KEYS; i++) {
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SocketChannel sc = SocketChannel.open();
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sc.configureBlocking(false);
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sc.register(sel, SelectionKey.OP_CONNECT | SelectionKey.OP_WRITE);
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sc.connect(ssc.socket().getLocalSocketAddress());
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}
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for (int i = 0; i < 10; i++) {
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if (lth.count >= MIN_KEYS)
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break;
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Thread.sleep(1000);
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}
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log.println(lth.count + " connections accepted");
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Thread.sleep(500);
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int n = sel.select();
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log.println(n + " keys selected");
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if (n < MIN_KEYS)
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throw new Exception("Only selected " + n + " keys");
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}
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}
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