/*

 * 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 8136421

 * @requires (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64") & (vm.opt.TieredStopAtLevel == null | vm.opt.TieredStopAtLevel == 3)

 * @library ../common/patches

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

 * @modules java.base/jdk.internal.org.objectweb.asm

 *          java.base/jdk.internal.org.objectweb.asm.tree

 *          jdk.vm.ci/jdk.vm.ci.hotspot

 *          jdk.vm.ci/jdk.vm.ci.code

 *          jdk.vm.ci/jdk.vm.ci.meta

 *

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:.

 *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

 *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *                   -Xmixed -Xbatch

 *                   compiler.jvmci.compilerToVM.ReprofileTest

 */

package compiler.jvmci.compilerToVM;

import compiler.jvmci.common.CTVMUtilities;

import compiler.whitebox.CompilerWhiteBoxTest;

import jdk.test.lib.Asserts;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;

import jdk.vm.ci.meta.ProfilingInfo;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.List;

public class ReprofileTest {

    public static void main(String[] args) {

        List<Method> testCases = createTestCases();

        testCases.forEach(ReprofileTest::runSanityTest);

    }

    private static List<Method> createTestCases() {

        List<Method> testCases = new ArrayList<>();

        try {

            Class<?> aClass = DummyClass.class;

            testCases.add(aClass.getMethod("dummyInstanceFunction"));

            aClass = DummyClass.class;

            testCases.add(aClass.getMethod("dummyFunction"));

        } catch (NoSuchMethodException e) {

            throw new Error("TEST BUG " + e.getMessage(), e);

        }

        return testCases;

    }

    private static void runSanityTest(Method aMethod) {

        System.out.println(aMethod);

        HotSpotResolvedJavaMethod method = CTVMUtilities

                .getResolvedMethod(aMethod);

        ProfilingInfo startProfile = method.getProfilingInfo();

        Asserts.assertFalse(startProfile.isMature(), aMethod

                + " : profiling info is mature in the beginning");

        // make interpreter to profile this method

        try {

            Object obj = aMethod.getDeclaringClass().newInstance();

            for (long i = 0; i < CompilerWhiteBoxTest.THRESHOLD; i++) {

                aMethod.invoke(obj);

            }

        } catch (ReflectiveOperationException e) {

            throw new Error("TEST BUG : " + e.getMessage(), e);

        }

        ProfilingInfo compProfile = method.getProfilingInfo();

        Asserts.assertNE(startProfile.toString(), compProfile.toString(),

                String.format("%s : profiling info wasn't changed after "

                                + "%d invocations",

                        aMethod, CompilerWhiteBoxTest.THRESHOLD));

        Asserts.assertTrue(compProfile.isMature(),

                String.format("%s is not mature after %d invocations",

                        aMethod, CompilerWhiteBoxTest.THRESHOLD));

        CompilerToVMHelper.reprofile(method);

        ProfilingInfo reprofiledProfile = method.getProfilingInfo();

        Asserts.assertNE(startProfile.toString(), reprofiledProfile.toString(),

                aMethod + " : profiling info wasn't changed after reprofiling");

        Asserts.assertNE(compProfile.toString(), reprofiledProfile.toString(),

                aMethod + " : profiling info didn't change after reprofile");

        Asserts.assertFalse(reprofiledProfile.isMature(), aMethod

                + " : profiling info is mature after reprofiling");

    }

}