/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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).

 *

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 * 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     8061616

 * @summary Basic Test for HotSpotDiagnosticMXBean.getVMOption() and double values

 * @author  Jaroslav Bachorik

 *

 * @run main/othervm -XX:CompileThresholdScaling=0.14 GetDoubleVMOption

 */

import com.sun.management.HotSpotDiagnosticMXBean;

import com.sun.management.VMOption;

import java.lang.management.ManagementFactory;

import java.util.List;

import javax.management.MBeanServer;

public class GetDoubleVMOption {

    private static final String COMPILE_THRESHOLD_SCALING = "CompileThresholdScaling";

    private static final String EXPECTED_VALUE = "0.14";

    private static final String HOTSPOT_DIAGNOSTIC_MXBEAN_NAME =

        "com.sun.management:type=HotSpotDiagnostic";

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

        List<HotSpotDiagnosticMXBean> list =

            ManagementFactory.getPlatformMXBeans(HotSpotDiagnosticMXBean.class);

        HotSpotDiagnosticMXBean mbean = list.get(0);

        checkVMOption(mbean);

        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();

        mbean = ManagementFactory.newPlatformMXBeanProxy(mbs,

                    HOTSPOT_DIAGNOSTIC_MXBEAN_NAME,

                    HotSpotDiagnosticMXBean.class);

        checkVMOption(mbean);

    }

    private static void checkVMOption(HotSpotDiagnosticMXBean mbean) {

        VMOption option = mbean.getVMOption(COMPILE_THRESHOLD_SCALING);

        if (!option.getValue().equalsIgnoreCase(EXPECTED_VALUE)) {

            throw new RuntimeException("Unexpected value: " +

                option.getValue() + " expected: " + EXPECTED_VALUE);

        }

    }

}