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 *

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 * 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

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 *

 * 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.

 *

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 */

/*

 * @test

 * @bug 6417044

 * @summary Test that a failing MBean registration does not lead to a deadlock

 * @author Eamonn McManus

 * @run main PostRegisterDeadlockTest2

 */

import javax.management.*;

public class PostRegisterDeadlockTest2 {

    private static String failed;

    public static interface EmptyMBean {}

    public static class Empty implements EmptyMBean, MBeanRegistration {

        public ObjectName preRegister(MBeanServer mbs, ObjectName on) {

            this.mbs = mbs;

            this.on = on;

            return on;

        }

        public void postRegister(Boolean done) {

            Thread t = new Thread() {

                public void run() {

                    if (!mbs.isRegistered(on))

                        failed = "Not registered!";

                }

            };

            t.start();

            try {

                t.join(5000L);

            } catch (InterruptedException e) {

                failed = "Interrupted: " + e;

            }

            if (t.isAlive())

                failed = "Deadlock detected";

        }

        public void preDeregister() {}

        public void postDeregister() {}

        private MBeanServer mbs;

        private ObjectName on;

    }

    public static void main(String[] args) throws Exception {

        MBeanServer mbs = MBeanServerFactory.newMBeanServer();

        ObjectName on = new ObjectName("a:b=c");

        mbs.registerMBean(new Empty(), on);

        try {

            mbs.registerMBean(new Empty(), on);

            throw new Exception("FAILED: did not get expected exception");

        } catch (InstanceAlreadyExistsException e) {

            System.out.println("OK: got expected exception");

        }

        if (failed != null)

            throw new Exception("FAILED: " + failed);

        System.out.println("TEST PASSED");

    }

}