test/hotspot/jtreg/vmTestbase/nsk/jvmti/RetransformClasses/retransform004.java

/*
 * Copyright (c) 2007, 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
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 */
package nsk.jvmti.RetransformClasses;

import nsk.share.Consts;
import java.io.*;
import java.util.*;

class ClassWithStaticInitializers {
    static {
        b = 0;
        c = 1;
    }

    static public int a = 0;
    static protected float b;
    static private byte c;

    public static void setB(float _b) { b = _b; }
    public static float getB() { return b; }

    public static void setC(byte _c) { c = _c; }
    public static byte getC() { return c; }
}

public class retransform004 {
    public int runIt(String[] args, PrintStream out) {
            ClassWithStaticInitializers.a = 1;
            ClassWithStaticInitializers.setB(1);
            ClassWithStaticInitializers.setC((byte)1);

            forceLoadedClassesRetransformation(ClassWithStaticInitializers.class);

            if (ClassWithStaticInitializers.a == 1
                && ClassWithStaticInitializers.getB() == 1
                && ClassWithStaticInitializers.getC() == 1)
            {
               System.out.println("TEST PASSED: values are the same");
               return Consts.TEST_PASSED;
            } else {
               System.out.println("TEST FAILED: values changed during retransformation");
                return Consts.TEST_FAILED;
            }
    }

    static native boolean forceLoadedClassesRetransformation(Class klass);

    /** run test from command line */
    public static void main(String args[]) {
        args = nsk.share.jvmti.JVMTITest.commonInit(args);

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

    /** run test from JCK-compatible environment */
    public static int run(String args[], PrintStream out) {
        return (new retransform004()).runIt(args, out);
    }
}