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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @bug 8006395 8012244
* @summary Tests racing code that reads and closes a Socket
*/
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.concurrent.Phaser;
// Racey test, will not always fail, but if it does then we have a problem.
public class Race {
final static int THREADS = 100;
public static void main(String[] args) throws Exception {
try (ServerSocket ss = new ServerSocket(0)) {
final int port = ss.getLocalPort();
final Phaser phaser = new Phaser(THREADS + 1);
for (int i=0; i<100; i++) {
final Socket s = new Socket("localhost", port);
s.setSoLinger(false, 0);
try (Socket sa = ss.accept()) {
sa.setSoLinger(false, 0);
final InputStream is = s.getInputStream();
Thread[] threads = new Thread[THREADS];
for (int j=0; j<THREADS; j++) {
threads[j] = new Thread() {
public void run() {
try {
phaser.arriveAndAwaitAdvance();
while (is.read() != -1)
Thread.sleep(50);
} catch (Exception x) {
if (!(x instanceof SocketException
&& x.getMessage().equalsIgnoreCase("socket closed")))
x.printStackTrace();
// ok, expect Socket closed
}
}};
}
for (int j=0; j<100; j++)
threads[j].start();
phaser.arriveAndAwaitAdvance();
s.close();
for (int j=0; j<100; j++)
threads[j].join();
}
}
}
}
}