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Datei: RedefineClasses.java Sprache: JAVA

/*
* Copyright (c) 2002, 2022, 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.
*/

/*
* @test
* @bug 4628760
* @summary RedefineClasses gets assertion: "Should be a method entry in cpcache!"
* @comment converted from test/jdk/com/sun/jdi/RedefineClasses.sh
*
* @library /test/lib
* @run main/othervm RedefineClasses
*/

/* On windows, with b90, this gets this:
* assert(u2_at_bcp >= 0 && u2_at_bcp < old_cache->length(), "Bad cpcache index!")
*
* Error happened during: VM_RedefineClasses
*
* Error ID: D:/jdk1.4/hotspot\src\share\vm\prims\jvmdi_hotswap.cpp, 331

* On solaris, and on windows with 4559100 fixed, this test fails with:
*
* HotSpot Virtual Machine Error, assertion failure
* Please report this error at
* http://java.sun.com/cgi-bin/bugreport.cgi
*
* Java VM: Java HotSpot(TM) Client VM (1.4-internal-debug mixed mode)
*
* assert(old_cache->entry_at(u2_at_bcp)->is_method_entry(), "Should be a method entry in cpcache!")
*
* Error happened during: VM_RedefineClasses
*
* Error ID: M:\ws\m\b2\service_hs_baseline\src\share\vm\prims\jvmdi_hotswap.cpp, 335
*/

/*
* With -Xcomp on solaris this passes, but takes 2 minutes.
*/

import jdk.test.lib.util.ClassTransformer;
import lib.jdb.JdbCommand;
import lib.jdb.JdbTest;

import java.lang.Thread;
import java.util.HashMap;
import javax.swing.*;
import java.util.*;

class RedefineClassesTarg {
    int xxx = 20;
    //ThreadGroup k = new ThreadGroup("group");
    int i;

    public RedefineClassesTarg() {
    }

    public void a1() {
    a2();
    }

    public void a2() {
    a3();
    }

    public void a3() {
        System.out.println("out from a3");   // @1 breakpoint
        //System.out.println("hello world"); // @ 1 delete this isn't even necesary
    }
    public void a4() {
        System.out.println("in a4");
        int i = 2;
        int j = 3333;
        System.out.println("i + j = " + (i + j));
        System.out.println("out from a4");
        System.out.println("def");
        a1();
    }

    public void aa() {
        a4();
        System.out.println("out from aa");
    }

    public static void main(String[] args) {
        byte xyz[] = new byte[] { 'a', 'b', 'c' };

        int x1 = 100;
        x1 = 101;
        x1 = 102;
        x1 = 103;
        String m1 = "def";
        String m2 = "abc";
        String m3 = "def";

        int[] m = new int[] { 100, 200, 300 };

        RedefineClassesTarg untitled31 = new RedefineClassesTarg();
        untitled31.aa();
    }
}

public class RedefineClasses extends JdbTest {

    public static void main(String argv[]) {
        new RedefineClasses().run();
    }

    private RedefineClasses() {
        super(DEBUGGEE_CLASS, SOURCE_FILE);
    }

    private static final String DEBUGGEE_CLASS = RedefineClassesTarg.class.getName();
    private static final String SOURCE_FILE = "RedefineClasses.java";

    @Override
    protected void runCases() {
        setBreakpoints(1);
        jdb.command(JdbCommand.run());
        String transformedClassFile = ClassTransformer.fromTestSource(SOURCE_FILE)
                .transform(1, DEBUGGEE_CLASS);
        jdb.command(JdbCommand.redefine(DEBUGGEE_CLASS, transformedClassFile));
        jdb.command(JdbCommand.redefine(DEBUGGEE_CLASS, transformedClassFile));
        jdb.command(JdbCommand.redefine(DEBUGGEE_CLASS, transformedClassFile));
    }
}

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