/*

 * Copyright 2005-2008 Sun Microsystems, Inc.  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.  Sun designates this

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

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.management;

import java.io.IOException;

import javax.management.ObjectName;

import com.sun.management.HotSpotDiagnosticMXBean;

import com.sun.management.VMOption;

/**

 * Implementation of the diagnostic MBean for Hotspot VM.

 */

public class HotSpotDiagnostic implements HotSpotDiagnosticMXBean {

    public HotSpotDiagnostic() {

    }

    public native void dumpHeap(String outputFile, boolean live) throws IOException;

    public List<VMOption> getDiagnosticOptions() {

        List<Flag> allFlags = Flag.getAllFlags();

        List<VMOption> result = new ArrayList<VMOption>();

        for (Flag flag : allFlags) {

            if (flag.isWriteable() && flag.isExternal()) {

                result.add(flag.getVMOption());

            }

        }

        return result;

    }

    public VMOption getVMOption(String name) {

        if (name == null) {

            throw new NullPointerException("name cannot be null");

        }

        Flag f = Flag.getFlag(name);

        if (f == null) {

            throw new IllegalArgumentException("VM option \"" +

                name + "\" does not exist");

        }

        return f.getVMOption();

    }

    public void setVMOption(String name, String value) {

        if (name == null) {

            throw new NullPointerException("name cannot be null");

        }

        if (value == null) {

            throw new NullPointerException("value cannot be null");

        }

        Util.checkControlAccess();

        Flag flag = Flag.getFlag(name);

        if (flag == null) {

            throw new IllegalArgumentException("VM option \"" +

                name + "\" does not exist");

        }

        if (!flag.isWriteable()){

            throw new IllegalArgumentException("VM Option \"" +

                name + "\" is not writeable");

        }

        // Check the type of the value

        Object v = flag.getValue();

        if (v instanceof Long) {

            try {

                long l = Long.parseLong(value);

                Flag.setLongValue(name, l);

            } catch (NumberFormatException e) {

                IllegalArgumentException iae =

                    new IllegalArgumentException("Invalid value:" +

                        " VM Option \"" + name + "\"" +

                        " expects numeric value");

                iae.initCause(e);

                throw iae;

            }

        } else if (v instanceof Boolean) {

            if (!value.equalsIgnoreCase("true") &&

                !value.equalsIgnoreCase("false")) {

                throw new IllegalArgumentException("Invalid value:" +

                    " VM Option \"" + name + "\"" +

                    " expects \"true\" or \"false\".");

            }

            Flag.setBooleanValue(name, Boolean.parseBoolean(value));

        } else if (v instanceof String) {

            Flag.setStringValue(name, value);

        } else {

            throw new IllegalArgumentException("VM Option \"" +

                name + "\" is of an unsupported type: " +

                v.getClass().getName());

        }

    }

    public ObjectName getObjectName() {

    }

}