/*

 * Copyright (c) 2003, 2004, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 */

package sun.management;

import java.lang.management.ClassLoadingMXBean;

import sun.management.counter.Counter;

/**

 * Hotspot internal management interface for the class loading system.

 *

 * This management interface is internal and uncommitted

 * and subject to change without notice.

 */

public interface HotspotClassLoadingMBean {

    /**

     * Returns the amount of memory in bytes occupied by loaded classes

     * in the Java virtual machine.

     *

     * @return the amount of memory in bytes occupied by loaded classes

     * in the Java virtual machine.

     */

    public long getLoadedClassSize();

    /**

     * Returns the number of bytes that the Java virtual machine

     * collected due to class unloading.

     *

     * @return the number of bytes that the VM collected due to

     * class unloading.

     */

    public long getUnloadedClassSize();

    /**

     * Returns the accumulated elapsed time spent by class loading

     * in milliseconds.

     *

     * @return the accumulated elapsed time spent by class loading

     * in milliseconds.

     */

    public long getClassLoadingTime();

    /**

     * Returns the amount of memory in bytes occupied by the method

     * data.

     *

     * @return the amount of memory in bytes occupied by the method

     * data.

     */

    public long getMethodDataSize();

    /**

     * Returns the number of classes for which initializers were run.

     *

     * @return the number of classes for which initializers were run.

     */

    public long getInitializedClassCount();

    /**

     * Returns the accumulated elapsed time spent in class initializers

     * in milliseconds.

     *

     * @return the accumulated elapsed time spent in class initializers

     * in milliseconds.

     */

    public long getClassInitializationTime();

    /**

     * Returns the accumulated elapsed time spent in class verifier

     * in milliseconds.

     *

     * @return the accumulated elapsed time spent in class verifier

     * in milliseconds.

     */

    public long getClassVerificationTime();

    /**

     * Returns a list of internal counters maintained in the Java

     * virtual machine for the class loading system.

     *

     * @return a list of internal counters maintained in the VM

     * for the class loading system.

     */

    public java.util.List<Counter> getInternalClassLoadingCounters();

}