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/*
* Copyright (c) 2022, 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 8287580
* @summary Check CancelledKeyException not thrown during channel registration
* @run main CancelDuringRegister
*/
import java.nio.channels.*;
public class CancelDuringRegister {
private static volatile boolean done;
public static void main(String[] args) throws Exception {
try (Selector sel = Selector.open()) {
// create thread to cancel all keys in the selector's key set
var thread = new Thread(() -> {
while (!done) {
sel.keys().forEach(SelectionKey::cancel);
}
});
thread.start();
try (SocketChannel sc = SocketChannel.open()) {
sc.configureBlocking(false);
for (int i = 0; i <100_000; i++) {
// register
var key = sc.register(sel, SelectionKey.OP_READ);
sel.selectNow();
// cancel and flush
key.cancel();
do {
sel.selectNow();
} while (sel.keys().contains(key));
}
} finally {
done = true;
}
thread.join();
}
}
}
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