/*

 * Copyright (c) 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.

 */

import java.util.logging.*;

public class LoggerWeakRefLeak extends SimpleApplication {

    // The test driver script will allow this program to run until we

    // reach DEFAULT_LOOP_TIME or a decrease in instance counts is

    // observed. For these particular WeakReference leaks, the count

    // was always observed to be increasing so if we get a decreasing

    // count, then the leaks are fixed in the bits being tested.

    // Two minutes has been enough time to observe a decrease in

    // fixed bits on overloaded systems, but the test will likely

    // finish more quickly.

    public static int DEFAULT_LOOP_TIME = 120;  // time is in seconds

    // execute the LoggerWeakRefLeak app work

    public void doMyAppWork(String[] args) throws Exception {

        int loop_time = 0;

        int max_loop_time = DEFAULT_LOOP_TIME;

        // args[0] is the port-file

        if (args.length < 2) {

            System.out.println("INFO: using default time of "

                + max_loop_time + " seconds.");

        } else {

            try {

                max_loop_time = Integer.parseInt(args[1]);

            } catch (NumberFormatException nfe) {

                throw new RuntimeException("Error: '" + args[1]

                    + "': is not a valid seconds value.");

            }

        }

        long count = 0;

        int  loggerCount = 0;

        long now = 0;

        long startTime = System.currentTimeMillis();

        while (now < (startTime + (max_loop_time * 1000))) {

            if ((count % 1000) == 0) {

                // Print initial call count to let caller know that

                // we're up and running and then periodically

                System.out.println("INFO: call count = " + count);

            }

            for (int i = 0; i < 100; i++) {

                // This Logger call is leaking two different WeakReferences:

                // - one in LogManager.LogNode

                // - one in Logger.kids

                java.util.logging.Logger.getLogger("logger-" + loggerCount);

                count++;

                if (++loggerCount >= 25000) {

                    // Limit the Logger namespace used by the test so

                    // the weak refs in LogManager.loggers that are

                    // being properly managed don't skew the counts

                    // by too much.

                    loggerCount = 0;

                }

            }

            try {

                // delay for 1/10 of a second to avoid CPU saturation

                Thread.sleep(100);

            } catch (InterruptedException ie) {

                // ignore any exceptions

            }

            now = System.currentTimeMillis();

        }

        System.out.println("INFO: final loop count = " + count);

    }

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

        AnonLoggerWeakRefLeak myApp = new AnonLoggerWeakRefLeak();

        SimpleApplication.setMyApp(myApp);

        SimpleApplication.main(args);

    }

}