/*

 * Copyright (c) 2005, 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

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 */

/**

 * @test

 * @bug 6230699

 * @summary Test ThreadReference.ownedMonitorsAndFrames()

 * @bug 6701700

 * @summary MonitorInfo objects aren't invalidated when the owning thread is resumed

 * @author Swamy Venkataramanappa

 *

 * @run build TestScaffold VMConnection TargetListener TargetAdapter

 * @run compile -g MonitorFrameInfo.java

 * @run driver MonitorFrameInfo

 */

import com.sun.jdi.*;

import com.sun.jdi.event.*;

import com.sun.jdi.request.*;

import java.util.*;

    /********** target program **********/

class MonitorTestTarg {

    static void foo3() {

        System.out.println("executing foo3");

    }

    static void foo2() {

        Object l1 = new Object();

        synchronized(l1) {

            System.out.println("executing foo2 " + l1);

            foo3();

        }

    }

    static void foo1() {

        foo2();

    }

    public static void main(String[] args){

        System.out.println("Howdy!");

        Object l1 = new Object();

        synchronized(l1) {

            System.out.println("executing main" + l1);

            foo1();

        }

    }

}

    /********** test program **********/

public class MonitorFrameInfo extends TestScaffold {

    ReferenceType targetClass;

    ThreadReference mainThread;

    List monitors;

    static int expectedCount = 2;

    static int[] expectedDepth = { 1, 3 };

    static String[] expectedNames = {"foo3", "foo2", "foo1", "main"};

    MonitorFrameInfo (String args[]) {

        super(args);

    }

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

        new MonitorFrameInfo(args).startTests();

    }

    /********** test core **********/

    protected void runTests() throws Exception {

        /*

         * Get to the top of main()

         * to determine targetClass and mainThread

         */

        BreakpointEvent bpe = startToMain("MonitorTestTarg");

        targetClass = bpe.location().declaringType();

        mainThread = bpe.thread();

        int initialSize = mainThread.frames().size();

        resumeTo("MonitorTestTarg", "foo3", "()V");

        if (!mainThread.frame(0).location().method().name()

                        .equals("foo3")) {

            failure("FAILED: frame failed");

        }

        if (mainThread.frames().size() != (initialSize + 3)) {

            failure("FAILED: frames size failed");

        }

        if (mainThread.frames().size() != mainThread.frameCount()) {

            failure("FAILED: frames size not equal to frameCount");

        }

        /* Test monitor frame info.

         */

        if (vm().canGetMonitorFrameInfo()) {

            System.out.println("Get monitors");

            monitors = mainThread.ownedMonitorsAndFrames();

            if (monitors.size() != expectedCount) {

                failure("monitors count is not equal to expected count");

            }

            MonitorInfo mon = null;

            for (int j=0; j < monitors.size(); j++) {

                mon  = (MonitorInfo)monitors.get(j);

                System.out.println("Monitor obj " + mon.monitor() + "depth =" +mon.stackDepth());

                if (mon.stackDepth() != expectedDepth[j]) {

                    failure("FAILED: monitor stack depth is not equal to expected depth");

                }

            }

            // The last gotten monInfo is in mon.   When we resume the thread,

            // it should become invalid.  We will step out of the top frame

            // so that the frame depth in this mon object will no longer be correct.

            // That is why the monInfo's have to become invalid when the thread is

            // resumed.

            stepOut(mainThread);

            boolean ok = false;

            try {

                System.out.println("*** Saved Monitor obj " + mon.monitor() + "depth =" +mon.stackDepth());

            } catch(InvalidStackFrameException ee) {

                // ok

                ok = true;

                System.out.println("Got expected InvalidStackFrameException after a resume");

            }

            if (!ok) {

                failure("FAILED: MonitorInfo object was not invalidated by a resume");

            }

        } else {

            System.out.println("can not get monitors frame info");

        }

        /*

         * resume until end

         */

        listenUntilVMDisconnect();

        /*

         * deal with results of test

         * if anything has called failure("foo") testFailed will be true

         */

        if (!testFailed) {

            println("MonitorFrameInfo: passed");

        } else {

            throw new Exception("MonitorFrameInfo: failed");

        }

    }

}