/*

 * Copyright (c) 2004, 2013, 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.

 *

 */

package sun.jvm.hotspot.tools;

import java.io.*;

import sun.jvm.hotspot.utilities.*;

public class JMap extends Tool {

    public JMap(int m) {

        mode = m;

    }

    public JMap() {

        this(MODE_PMAP);

    }

    protected boolean needsJavaPrefix() {

        return false;

    }

    public String getName() {

        return "jmap";

    }

    protected String getCommandFlags() {

        return "-heap|-heap:format=b|-histo|-clstats|-finalizerinfo";

    }

    protected void printFlagsUsage() {

        System.out.println("    <no option>\tto print same info as Solaris pmap");

        System.out.println("    -heap\tto print java heap summary");

        System.out.println("    -heap:format=b\tto dump java heap in hprof binary format");

        System.out.println("    -histo\tto print histogram of java object heap");

        System.out.println("    -clstats\tto print class loader statistics");

        System.out.println("    -finalizerinfo\tto print information on objects awaiting finalization");

        super.printFlagsUsage();

    }

    public static final int MODE_HEAP_SUMMARY = 0;

    public static final int MODE_HISTOGRAM = 1;

    public static final int MODE_CLSTATS = 2;

    public static final int MODE_PMAP = 3;

    public static final int MODE_HEAP_GRAPH_HPROF_BIN = 4;

    public static final int MODE_HEAP_GRAPH_GXL = 5;

    public static final int MODE_FINALIZERINFO = 6;

    public void run() {

        Tool tool = null;

        switch (mode) {

        case MODE_HEAP_SUMMARY:

            tool = new HeapSummary();

            break;

        case MODE_HISTOGRAM:

            tool = new ObjectHistogram();

            break;

        case MODE_CLSTATS:

            tool = new ClassLoaderStats();

            break;

        case MODE_PMAP:

            tool = new PMap();

            break;

        case MODE_HEAP_GRAPH_HPROF_BIN:

            writeHeapHprofBin();

            return;

        case MODE_HEAP_GRAPH_GXL:

            writeHeapGXL();

            return;

        case MODE_FINALIZERINFO:

            tool = new FinalizerInfo();

            break;

        default:

            usage();

            break;

       }

       tool.setAgent(getAgent());

       tool.setDebugeeType(getDebugeeType());

       tool.run();

    }

    public static void main(String[] args) {

        int mode = MODE_PMAP;

        if (args.length > 1 ) {

            String modeFlag = args[0];

            boolean copyArgs = true;

            if (modeFlag.equals("-heap")) {

                mode = MODE_HEAP_SUMMARY;

            } else if (modeFlag.equals("-histo")) {

                mode = MODE_HISTOGRAM;

            } else if (modeFlag.equals("-clstats")) {

                mode = MODE_CLSTATS;

            } else if (modeFlag.equals("-finalizerinfo")) {

                mode = MODE_FINALIZERINFO;

            } else {

                int index = modeFlag.indexOf("-heap:format=");

                if (index != -1) {

                    String format = modeFlag.substring(1 + modeFlag.indexOf('='));

                    if (format.equals("b")) {

                        mode = MODE_HEAP_GRAPH_HPROF_BIN;

                    } else if (format.equals("x")) {

                        mode = MODE_HEAP_GRAPH_GXL;

                    } else {

                        System.err.println("unknown heap format:" + format);

                        return;

                    }

                } else {

                    copyArgs = false;

                }

            }

            if (copyArgs) {

                String[] newArgs = new String[args.length - 1];

                for (int i = 0; i < newArgs.length; i++) {

                    newArgs[i] = args[i + 1];

                }

                args = newArgs;

            }

        }

        JMap jmap = new JMap(mode);

        jmap.start(args);

        jmap.stop();

    }

    public boolean writeHeapHprofBin(String fileName) {

        try {

            HeapGraphWriter hgw = new HeapHprofBinWriter();

            hgw.write(fileName);

            System.out.println("heap written to " + fileName);

            return true;

        } catch (IOException exp) {

            System.err.println(exp.getMessage());

            return false;

        }

    }

    public boolean writeHeapHprofBin() {

        return writeHeapHprofBin("heap.bin");

    }

    private boolean writeHeapGXL(String fileName) {

        try {

            HeapGraphWriter hgw = new HeapGXLWriter();

            hgw.write(fileName);

            System.out.println("heap written to " + fileName);

            return true;

        } catch (IOException exp) {

            System.err.println(exp.getMessage());

            return false;

        }

    }

    public boolean writeHeapGXL() {

        return writeHeapGXL("heap.xml");

    }

    private int mode;

}