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/*
* Copyright (c) 2008, 2009, 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 6842687
* @summary Unit test for AsynchronousSocketChannel/AsynchronousServerSocketChannel
*/
import java.nio.ByteBuffer;
import java.nio.channels.*;
import java.net.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicReference;
/**
* Initiates I/O operation on a thread that terminates before the I/O completes.
*/
public class DieBeforeComplete {
public static void main(String[] args) throws Exception {
final AsynchronousServerSocketChannel listener =
AsynchronousServerSocketChannel.open().bind(new InetSocketAddress(0));
InetAddress lh = InetAddress.getLocalHost();
int port = ((InetSocketAddress) (listener.getLocalAddress())).getPort();
final SocketAddress sa = new InetSocketAddress(lh, port);
// -- accept --
// initiate accept in a thread that dies before connection is established
Future<AsynchronousSocketChannel> r1 =
initiateAndDie(new Task<AsynchronousSocketChannel>() {
public Future<AsynchronousSocketChannel> run() {
return listener.accept();
}});
// establish and accept connection
SocketChannel peer = SocketChannel.open(sa);
final AsynchronousSocketChannel channel = r1.get();
// --- read --
// initiate read in a thread that dies befores bytes are available
final ByteBuffer dst = ByteBuffer.allocate(100);
Future<Integer> r2 = initiateAndDie(new Task<Integer>() {
public Future<Integer> run() {
return channel.read(dst);
}});
// send bytes
peer.write(ByteBuffer.wrap("hello".getBytes()));
int nread = r2.get();
if (nread <= 0)
throw new RuntimeException("Should have read at least one byte");
// -- write --
// initiate writes in threads that dies
boolean completedImmediately;
Future<Integer> r3;
do {
final ByteBuffer src = ByteBuffer.wrap(new byte[10000]);
r3 = initiateAndDie(new Task<Integer>() {
public Future<Integer> run() {
return channel.write(src);
}});
try {
int nsent = r3.get(5, TimeUnit.SECONDS);
if (nsent <= 0)
throw new RuntimeException("Should have wrote at least one byte");
completedImmediately = true;
} catch (TimeoutException x) {
completedImmediately = false;
}
} while (completedImmediately);
// drain connection
peer.configureBlocking(false);
ByteBuffer src = ByteBuffer.allocateDirect(10000);
do {
src.clear();
nread = peer.read(src);
if (nread == 0) {
Thread.sleep(100);
nread = peer.read(src);
}
} while (nread > 0);
// write should complete now
int nsent = r3.get();
if (nsent <= 0)
throw new RuntimeException("Should have wrote at least one byte");
}
static interface Task<T> {
Future<T> run();
}
static <T> Future<T> initiateAndDie(final Task<T> task) {
final AtomicReference<Future<T>> result = new AtomicReference<Future<T>>();
Runnable r = new Runnable() {
public void run() {
result.set(task.run());
}
};
Thread t = new Thread(r);
t.start();
while (t.isAlive()) {
try {
t.join();
} catch (InterruptedException x) {
}
}
return result.get();
}
}
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