/*

 * Copyright (c) 2014, 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.

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 */

import jdk.test.lib.Asserts;

import jdk.test.lib.Platform;

import sun.hotspot.WhiteBox;

/**

 * @test

 * @summary Verifies that Platform::isTieredSupported returns correct value.

 * @library /test/lib

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

 *          java.management

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

 *                   -XX:+WhiteBoxAPI -XX:+TieredCompilation

 *                   TestPlatformIsTieredSupported

 */

public class TestPlatformIsTieredSupported {

    public static void main(String args[]) {

        WhiteBox whiteBox = WhiteBox.getWhiteBox();

        boolean tieredCompilation = whiteBox.getBooleanVMFlag(

                "TieredCompilation");

        Asserts.assertEQ(Platform.isTieredSupported(), tieredCompilation,

                "Platform::isTieredSupported should report the same value as "

                        + "TieredCompilation flag's value when "

                        + "+TieredCompilation was explicitly passed to JVM.");

    }

}