/*

 * Copyright (c) 2015, 2016, 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 8136421

 * @requires (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64")

 * @library / /test/lib

 *          ../common/patches

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

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

 *

 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper

 *        sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

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

 *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

 *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *                   compiler.jvmci.compilerToVM.IsMatureTest

 */

package compiler.jvmci.compilerToVM;

import compiler.jvmci.common.testcases.SimpleClass;

import compiler.whitebox.CompilerWhiteBoxTest;

import jdk.test.lib.Asserts;

import jdk.test.lib.Platform;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import sun.hotspot.WhiteBox;

import java.lang.reflect.Executable;

public class IsMatureTest {

    private static final WhiteBox WB = WhiteBox.getWhiteBox();

    private static final boolean TIERED

            = WB.getBooleanVMFlag("TieredCompilation");

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

        new IsMatureTest().test();

    }

    public void test() throws Exception {

        SimpleClass sclass = new SimpleClass();

        Executable method = SimpleClass.class.getDeclaredMethod("testMethod");

        long methodData = WB.getMethodData(method);

        boolean isMature = CompilerToVMHelper.isMature(methodData);

        Asserts.assertEQ(methodData, 0L,

                "Never invoked method can't have method data");

        Asserts.assertFalse(isMature, "Never invoked method can't be mature");

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

            sclass.testMethod();

        }

        methodData = WB.getMethodData(method);

        isMature = CompilerToVMHelper.isMature(methodData);

        int compLevel = WB.getMethodCompilationLevel(method);

        // methodData doesn't necessarily exist for interpreter and compilation level 1

        if (compLevel != CompilerWhiteBoxTest.COMP_LEVEL_NONE

                && compLevel != CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE) {

            Asserts.assertNE(methodData, 0L,

                    "Multiple times invoked method should have method data");

            /* a method is not mature in Xcomp mode with tiered compilation disabled,

               see NonTieredCompPolicy::is_mature */

            Asserts.assertEQ(isMature, !(Platform.isComp() && !TIERED),

                    "Unexpected isMature state for multiple times invoked method");

        }

    }

}