/*

 * Copyright (c) 2001, 2015, 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 com.sun.jdi.*;

import com.sun.jdi.event.*;

import java.util.*;

class A extends Object {

    public static int aField = 0;

}

class B extends A {

}

class FieldWatchpointsDebugee {

    public void update (){

        /* test direct modify access by other class */

        A.aField = 7;

        B.aField = 11;

    }

    public void access (){

        /* test direct read access by other class */

        System.out.print("aField is: ");

        System.out.println(A.aField);

    }

    public static void main(String[] args){

        A testA = new A();

        B testB = new B();

        FieldWatchpointsDebugee my =

            new FieldWatchpointsDebugee();

        my.update();

        my.access();

    }

}

public class FieldWatchpoints extends TestScaffold {

    boolean fieldModifyReported = false;

    boolean fieldAccessReported = false;

    FieldWatchpoints (String args[]) {

        super(args);

    }

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

        new FieldWatchpoints (args).startTests();

    }

    protected void runTests() throws Exception {

        startTo("FieldWatchpointsDebugee", "update", "()V");

        try {

            /*

             * Set a modification watch on aField

             */

            ReferenceType rt = findReferenceType("A");

            String fieldName = "aField";

            Field field = rt.fieldByName(fieldName);

            if (field == null) {

                throw new Exception ("Field name not found: " + fieldName);

            }

            com.sun.jdi.request.EventRequest req =

               eventRequestManager().createModificationWatchpointRequest(field);

            req.setSuspendPolicy(com.sun.jdi.request.EventRequest.SUSPEND_ALL);

            req.enable();

            /*

             * Set an access watch on aField

             */

            req =

               eventRequestManager().createAccessWatchpointRequest(field);

            req.setSuspendPolicy(com.sun.jdi.request.EventRequest.SUSPEND_ALL);

            req.enable();

            addListener (new TargetAdapter() {

                    EventSet lastSet = null;

                    public void eventSetReceived(EventSet set) {

                        lastSet = set;

                    }

                    public void fieldModified(ModificationWatchpointEvent event) {

                        System.out.println("Field modified: " + event);

                        fieldModifyReported = true;

                        lastSet.resume();

                    }

                    public void fieldAccessed(AccessWatchpointEvent event) {

                        System.out.println("Field accessed: " + event);

                        fieldAccessReported = true;

                        lastSet.resume();

                    }

                });

            vm().resume();

        } catch (Exception ex){

            ex.printStackTrace();

            testFailed = true;

        } finally {

            // Allow application to complete and shut down

            resumeToVMDisconnect();

        }

        if (!testFailed && fieldModifyReported && fieldAccessReported) {

            System.out.println("FieldWatchpoints: passed");

        } else {

            throw new Exception("FieldWatchpoints: failed");

        }

    }

}