/*

 * Copyright (c) 2003, 2018, 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 nsk.jvmti.IterateOverInstancesOfClass;

import java.io.PrintStream;

import nsk.share.*;

import nsk.share.jvmti.*;

public class iterinstcls001 extends DebugeeClass {

    /** Load native library if required.*/

    static {

        loadLibrary("iterinstcls001");

    }

    /** Run test from command line. */

    public static void main(String argv[]) {

        argv = nsk.share.jvmti.JVMTITest.commonInit(argv);

        // JCK-compatible exit

        System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE);

    }

    /** Run test from JCK-compatible environment. */

    public static int run(String argv[], PrintStream out) {

        return new iterinstcls001().runIt(argv, out);

    }

    /* =================================================================== */

    /* scaffold objects */

    ArgumentHandler argHandler = null;

    Log log = null;

    long timeout = 0;

    int status = Consts.TEST_PASSED;

    /* constants */

    public static final int DEFAULT_CHAIN_LENGTH = 4;

    /** Tested object. */

    public static iterinstcls001RootTestedClass object = null;

    /** Run debugee code. */

    public int runIt(String argv[], PrintStream out) {

        argHandler = new ArgumentHandler(argv);

        log = new Log(out, argHandler);

        timeout = argHandler.getWaitTime() * 60 * 1000; // milliseconds

        int chainLength = argHandler.findOptionIntValue("objects", DEFAULT_CHAIN_LENGTH);

        log.display("Creating chain of tested objects: " + chainLength + " length");

        object = new iterinstcls001RootTestedClass(chainLength);

        log.display("Sync: objects created");

        status = checkStatus(status);

        log.display("Cleaning links to unreachable objects");

        object.cleanUnreachable();

        log.display("Sync: objects are unreachable");

        status = checkStatus(status);

        return status;

    }

}

/* =================================================================== */

/** Class for root tested object. */

class iterinstcls001RootTestedClass {

    int length;

    iterinstcls001TestedClass reachableChain = null;

    iterinstcls001TestedClass unreachableChain = null;

    public iterinstcls001RootTestedClass(int length) {

        this.length = length;

        reachableChain = new iterinstcls001TestedClass(length);

        unreachableChain = new iterinstcls001TestedClass(length);

    }

    public void cleanUnreachable() {

        unreachableChain = null;

    }

}

/** Class for tested chain object. */

class iterinstcls001TestedClass {

    int level;

    iterinstcls001TestedClass tail = null;

    public iterinstcls001TestedClass(int length) {

        this.level = length;

        if (length > 1) {

            tail = new iterinstcls001TestedClass(length - 1);

        }

    }

}