/*
 * Copyright (c) 2015, 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.
 *
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 */

/*
 * @test
 * @bug 8136421
 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
 * @library / /testlibrary /../../test/lib
 * @compile ../common/CompilerToVMHelper.java
 * @build sun.hotspot.WhiteBox IsMatureTest
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
 *                              jdk.vm.ci.hotspot.CompilerToVMHelper
 * @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 jdk.vm.ci.hotspot.CompilerToVMHelper;
import jdk.test.lib.Asserts;
import sun.hotspot.WhiteBox;

import java.lang.reflect.Executable;

public class IsMatureTest {
    private static final WhiteBox WB = WhiteBox.getWhiteBox();

    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 metaspaceMethodData = WB.getMethodData(method);
        Asserts.assertEQ(metaspaceMethodData, 0L, "MDO should be null for "
                 + "never invoked method");
        boolean isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
        Asserts.assertFalse(isMature, "null MDO can't be mature");
        for (int i = 0; i < 1000; i++) {
            sclass.testMethod();
        }
        // warmed up, mdo should be ready for now
        metaspaceMethodData = WB.getMethodData(method);
        Asserts.assertNE(metaspaceMethodData, 0L,
                "MDO should be available after 1000 calls");
        for (int i = 0; i < 100_000; i++) {
            sclass.testMethod();
        }
        isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
        Asserts.assertTrue(isMature,
                "a 100_000 times invoked method should be mature");
    }
}