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 * 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.

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package nsk.monitoring.MemoryPoolMBean.isUsageThresholdExceeded;

import java.lang.management.*;

import java.io.*;

import java.util.*;

import nsk.share.*;

import nsk.monitoring.share.*;

import javax.management.InstanceNotFoundException;

import javax.management.Notification;

import javax.management.NotificationFilter;

import javax.management.NotificationListener;

import javax.management.openmbean.CompositeData;

public class isexceeded001 {

    private static boolean testFailed = false;

    private static final int INCREMENT = 100 * 1024; // 100kb

    public static void main(String[] argv) {

        System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out));

    }

    static byte[] b;

    public static int run(String[] argv, PrintStream out) {

        ArgumentHandler argHandler = new ArgumentHandler(argv);

        Log log = new Log(out, argHandler);

        MemoryMonitor monitor = Monitor.getMemoryMonitor(log, argHandler);

        List pools = monitor.getMemoryPoolMBeans();

        for (int i = 0; i < pools.size(); i++) {

            Object pool = pools.get(i);

            log.display(i + " pool " + monitor.getName(pool));

            if (!monitor.isUsageThresholdSupported(pool)) {

                log.display("  does not support usage thresholds");

                continue;

            } else

                log.display("  supports usage thresholds");

            // Set a threshold that is greater than used value

            MemoryUsage usage = monitor.getUsage(pool);

            long used = usage.getUsed();

            long max = usage.getMax();

            long threshold = used + 1;

            if ( (max > -1) && (threshold > max) ) {

                // we can't test threshold - not enough memory

                log.display("not enough memory for testing threshold:" +

                 " used=" + used +

                 ", max = " + max );

            }

            monitor.setUsageThreshold(pool, threshold);

            log.display("  threshold " + threshold + " is set, used = " + used );

            monitor.resetPeakUsage(pool);

            log.display("  resetting peak usage");

            log.display("  peak usage = " + monitor.getPeakUsage(pool).getUsed());

            // Eat some memory - provoke usage of the pool to cross the

            // threshold value

            b = new byte[INCREMENT]; // Eat 100K

            boolean isExceeded = monitor.isUsageThresholdExceeded(pool);

            usage = monitor.getPeakUsage(pool);

            used = usage.getUsed();

            log.display("  used value is " + used);

            if (used < threshold && isExceeded) {

                // There're problems with isUsageThresholdExceeded()

                log.complain("isUsageThresholdExceeded() returned "

                    + "true, while threshold = " + threshold

                    + " and used peak = " + used);

                    testFailed = true;

            } else

            if (used >= threshold && !isExceeded) {

                // we can introduce some imprecision during pooling memory usage

                // value at the Code Cache memory pool. Amount of used memory

                // was changed after we'd calculated isExceeded value

                if (monitor.isUsageThresholdExceeded(pool)) {

                    // that's mean such imprecision

                    log.display("isUsageThresholdExceeded() returned false,"

                        + " while threshold = " + threshold + " and "

                        + "used peak = " + used);

                } else {

                    // some other problems with isUsageThresholdExceeded()

                    log.complain("isUsageThresholdExceeded() returned false,"

                        + " while threshold = " + threshold + " and "

                        + "used peak = " + used);

                        testFailed = true;

                }

            }

        } // for i

        if (testFailed)

            out.println("TEST FAILED");

        return (testFailed) ? Consts.TEST_FAILED : Consts.TEST_PASSED;

    }

}