/*

 * 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.

 *

 */

/*

 * @test

 * @bug 5011189

 * @summary Unit test for java.lang.management.CompilationMXBean

 *

 * @run main/othervm -Xcomp -Xbatch -Djava.awt.headless=true Basic

 */

import java.lang.management.*;

public class Basic {

    public static void main(String args[]) {

        CompilationMXBean mb = ManagementFactory.getCompilationMXBean();

        if (mb == null) {

            System.out.println("The virtual machine doesn't have a compilation system");

            return;

        }

        // Exercise getName() method

        System.out.println(mb.getName());

        // If compilation time monitoring isn't supported then we are done

        if (!mb.isCompilationTimeMonitoringSupported()) {

            System.out.println("Compilation time monitoring not supported.");

            return;

        }

        // Exercise getTotalCompilationTime();

        long time;

        // If the compiler has already done some work then we are done

        time = mb.getTotalCompilationTime();

        if (time > 0) {

            printCompilationTime(time);

            return;

        }

        // Now the hard bit - we do random work on the assumption

        // that the compiler will be used.

        System.out.println("Doing random work...");

        java.util.Locale.getAvailableLocales();

        java.security.Security.getProviders();

        java.awt.Toolkit.getDefaultToolkit();

        javax.swing.UIManager.getInstalledLookAndFeels();

        java.nio.channels.spi.SelectorProvider.provider();

        time = mb.getTotalCompilationTime();

        if (time > 0) {

            printCompilationTime(time);

        } else {

            throw new RuntimeException("getTimeCompilionTime returns 0");

        }

    }

    static void printCompilationTime(long time) {

        System.out.println("Total compilation time: " + time + " ms");

    }

}