/*

 * 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

 * @summary AOT methods should be swept if a super class has changed.

 * @library /test/lib /

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @requires vm.aot

 * @build compiler.aot.fingerprint.SelfChanged

 *        compiler.aot.AotCompiler

 *

 * @run main

 *      compiler.aot.fingerprint.SelfChanged WRITE-UNMODIFIED-CLASS

 * @run driver compiler.aot.AotCompiler -libname libSelfChanged.so

 *      -class compiler.aot.fingerprint.Blah

 *

 * @run main/othervm

 *      compiler.aot.fingerprint.SelfChanged TEST-UNMODIFIED

 *      -Xlog:aot+class+fingerprint=trace -Xlog:aot+class+load=trace

 *      compiler.aot.fingerprint.SelfChanged TEST-UNMODIFIED

 *

 * @run main

 *      compiler.aot.fingerprint.SelfChanged WRITE-MODIFIED-CLASS

 * @run main

 *      compiler.aot.fingerprint.SelfChanged TEST-MODIFIED

 *      -Xlog:aot+class+fingerprint=trace -Xlog:aot+class+load=trace

 *      compiler.aot.fingerprint.SelfChanged TEST-MODIFIED

 */

package compiler.aot.fingerprint;

import jdk.test.lib.Asserts;

import jdk.test.lib.compiler.InMemoryJavaCompiler;

import java.io.*;

class Blah {

    volatile int z;

    int getX() {

        for (z = 0; z < 10000; z++) {

            if (z % 7 == 1) {

                z += 2;

            }

        }

        return 0;

    }

}

public class SelfChanged {

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

        Blah f = new Blah();

        System.out.println("f.getX = " + f.getX());

        switch (args[0]) {

        case "WRITE-UNMODIFIED-CLASS":

            compileClass(false);

            break;

        case "WRITE-MODIFIED-CLASS":

            compileClass(true);

            break;

        case "TEST-UNMODIFIED":

            Asserts.assertTrue(f.getX() == 0, "getX from unmodified Blah class should return 0");

            break;

        case "TEST-MODIFIED":

            Asserts.assertTrue(f.getX() == 1, "getX from modified Blah class should return 1");

            break;

        default:

            throw new RuntimeException("unexpected option: " + args[0]);

        }

    }

    static void compileClass(boolean isModified) throws Throwable {

        String src =

               "package compiler.aot.fingerprint;"

             + "public class Blah {"

             + "    volatile int z;"

             + "    int getX() {"

             + "        for (z = 0; z < 10000; z++) {"

             + "            if (z % 7 == 1) {"

             + "                z += 2;"

             + "            }"

             + "        }"

             + "        return " + ((isModified) ? "1" : "0") + ";"

             + "    }"

             + "    int getY() {return 255;}"

            // The following is for the SelfChangedCDS.java test case. We always load an unmodified

            // version of Blah from the CDS archive. However, we would load an AOT library that

            // was compiled using a modified version of Blah. The getX method in this AOT library should

            // not be used.

            + "    public static void main(String args[]) {"

             + "        Blah b = new Blah();"

             + "        int n = b.getX();"

             + "        if (n != 0) {"

             + "            throw new RuntimeException(args[0] +  \" : \" + n);"

             + "        }"

             + "        System.out.println(\"PASSED\");"

             + "    }"

             + "}";

        String filename = System.getProperty("test.classes") + "/compiler/aot/fingerprint/Blah.class";

        FileOutputStream fos = new FileOutputStream(filename);

        fos.write(InMemoryJavaCompiler.compile("compiler.aot.fingerprint.Blah", src));

        fos.close();

    }

}