view agent/test/jdi/sagtest.java @ 364:919e7959392a

6742641: G1: NullPointerException during GCOld Summary: An update buffer is not processed correctly, which causes roots into the collection set not to be scanned and, hence, for the heap to be corrupted. The cause is that an object is accessed after it has been explicitly deleted, which causes a race. Reviewed-by: jcoomes, ysr
author tonyp
date Mon, 22 Sep 2008 09:56:49 -0400
parents a61af66fc99e
children c18cbe5936b8
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/*
 * Copyright 2002-2004 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.
 *
 * 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.
 *
 */

/**
 *  @test *  @bug 0000000
 *  @summary This is just an exercise of various JDI elements for use in
 *           testing the SA/JDI client
 *
 *  @author jjh
 *
 *  @run build TestScaffold VMConnection TargetListener TargetAdapter sagdoit
 *  @run compile -g -source 1.5 sagtarg.java
 *  @run main sagtest
 */
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;

import java.util.*;

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

// The target program is sagtarg.java

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

public class sagtest extends TestScaffold {
    ReferenceType targetClass;
    ThreadReference mainThread;

    sagtest (String args[]) {
        super(args);
    }

    public static void main(String[] args)      throws Exception {
        new sagtest(args).startTests();
    }

    /********** event handlers **********/


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

    protected void runTests() throws Exception {
        /*
         * Get to the top of main()
         * to determine targetClass and mainThread
         */
        BreakpointEvent bpe = startToMain("sagtarg");
        targetClass = bpe.location().declaringType();
        mainThread = bpe.thread();
        EventRequestManager erm = vm().eventRequestManager();
        stepOverLine(mainThread);  //stop on 18
        stepOverLine(mainThread);  //stop on 19
        stepOverLine(mainThread);  //stop on 20
        stepOverLine(mainThread);  //stop on 21
        stepOverLine(mainThread);  //stop on 22

        sagdoit mine = new sagdoit(vm());
        mine.doAll();

        if (!testFailed) {
            println("sagtest: passed");
        } else {
            throw new Exception("sagtest: failed");
        }
    }
}