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/*
* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4729342
* @summary Check for CancelledKeyException when key cancelled during select
*/
import java.nio.channels.*;
import java.io.IOException;
import java.net.*;
public class SelectAndCancel {
static SelectionKey sk;
/*
* CancelledKeyException is the failure symptom of 4729342
* NOTE: The failure is timing dependent and is not always
* seen immediately when the bug is present.
*/
public static void main(String[] args) throws Exception {
final Selector selector = Selector.open();
final ServerSocketChannel ssc =
ServerSocketChannel.open().bind(new InetSocketAddress(0));
final InetSocketAddress isa =
new InetSocketAddress(InetAddress.getLocalHost(), ssc.socket().getLocalPort());
// Create and start a selector in a separate thread.
new Thread(new Runnable() {
public void run() {
try {
ssc.configureBlocking(false);
sk = ssc.register(selector, SelectionKey.OP_ACCEPT);
selector.select();
} catch (IOException e) {
System.err.println("error in selecting thread");
e.printStackTrace();
}
}
}).start();
// Wait for above thread to get to select() before we call close.
Thread.sleep(3000);
// Try to close. This should wakeup select.
new Thread(new Runnable() {
public void run() {
try {
SocketChannel sc = SocketChannel.open();
sc.connect(isa);
ssc.close();
sk.cancel();
sc.close();
} catch (IOException e) {
System.err.println("error in closing thread");
System.err.println(e);
}
}
}).start();
// Wait for select() to be awakened, which should be done by close.
Thread.sleep(3000);
selector.wakeup();
selector.close();
}
}
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