jdk8-mips64-public/hotspot: test/gc/arguments/TestG1HeapRegionSize.java@3b4e1b5c13a0

8037510: CMM Testing: Min/MaxHeapFreeRatio flags should be manageable through the API
Summary: Added tests for Min/MaxHeapFreeRatio flags
Reviewed-by: jwilhelm, tschatzl
Contributed-by: andrey.x.zakharov@oracle.com

     1 /*

     2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

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

4 *

     5 * This code is free software; you can redistribute it and/or modify it

     6 * under the terms of the GNU General Public License version 2 only, as

     7 * published by the Free Software Foundation.

8 *

     9 * This code is distributed in the hope that it will be useful, but WITHOUT

    10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12 * version 2 for more details (a copy is included in the LICENSE file that

    13 * accompanied this code).

    14 *

    15 * You should have received a copy of the GNU General Public License version

    16 * 2 along with this work; if not, write to the Free Software Foundation,

    17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18 *

    19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20 * or visit www.oracle.com if you need additional information or have any

    21 * questions.

    22 */

    24 /*

    25  * @test TestG1HeapRegionSize

    26  * @key gc

    27  * @bug 8021879

    28  * @summary Verify that the flag G1HeapRegionSize is updated properly

    29  * @run main/othervm -Xmx64m TestG1HeapRegionSize 1048576

    30  * @run main/othervm -XX:G1HeapRegionSize=2m -Xmx64m TestG1HeapRegionSize 2097152

    31  * @run main/othervm -XX:G1HeapRegionSize=3m -Xmx64m TestG1HeapRegionSize 2097152

    32  * @run main/othervm -XX:G1HeapRegionSize=64m -Xmx256m TestG1HeapRegionSize 33554432

    33  */

    35 import sun.management.ManagementFactoryHelper;

    36 import com.sun.management.HotSpotDiagnosticMXBean;

    37 import com.sun.management.VMOption;

    39 public class TestG1HeapRegionSize {

    41   public static void main(String[] args) {

    42     HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean();

    44     VMOption option = diagnostic.getVMOption("UseG1GC");

    45     if (option.getValue().equals("false")) {

    46       System.out.println("Skipping this test. It is only a G1 test.");

    47       return;

    48     }

    50     String expectedValue = getExpectedValue(args);

    51     option = diagnostic.getVMOption("G1HeapRegionSize");

    52     if (!expectedValue.equals(option.getValue())) {

    53       throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + option.getValue());

    54     }

    55   }

    57   private static String getExpectedValue(String[] args) {

    58     if (args.length != 1) {

    59       throw new RuntimeException("Wrong number of arguments. Expected 1 but got " + args.length);

    60     }

    61     return args[0];

    62   }

    64 }

Mercurial > jdk8-mips64-public > hotspot / file revision

test/gc/arguments/TestG1HeapRegionSize.java@3b4e1b5c13a0

test/gc/arguments/TestG1HeapRegionSize.java