jdk8-mips64-public/hotspot: test/gc/metaspace/TestMetaspaceMemoryPool.java@710a3c8b516e

     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 import java.util.List;

    25 import java.lang.management.*;

    26 import com.oracle.java.testlibrary.*;

    27 import static com.oracle.java.testlibrary.Asserts.*;

    29 /* @test TestMetaspaceMemoryPool

    30  * @bug 8000754

    31  * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a

    32  *          MemoryManagerMXBean is created.

    33  * @library /testlibrary

    34  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool

    35  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool

    36  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool

    37  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool

    38  */

    39 public class TestMetaspaceMemoryPool {

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

    41         verifyThatMetaspaceMemoryManagerExists();

    43         boolean isMetaspaceMaxDefined = InputArguments.containsPrefix("-XX:MaxMetaspaceSize");

    44         verifyMemoryPool(getMemoryPool("Metaspace"), isMetaspaceMaxDefined);

    46         if (Platform.is64bit()) {

    47             if (InputArguments.contains("-XX:+UseCompressedOops")) {

    48                 MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space");

    49                 verifyMemoryPool(cksPool, true);

    50             }

    51         }

    52     }

    54     private static void verifyThatMetaspaceMemoryManagerExists() {

    55         List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans();

    56         for (MemoryManagerMXBean manager : managers) {

    57             if (manager.getName().equals("Metaspace Manager")) {

    58                 return;

    59             }

    60         }

    62         throw new RuntimeException("Expected to find a metaspace memory manager");

    63     }

    65     private static MemoryPoolMXBean getMemoryPool(String name) {

    66         List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();

    67         for (MemoryPoolMXBean pool : pools) {

    68             if (pool.getName().equals(name)) {

    69                 return pool;

    70             }

    71         }

    73         throw new RuntimeException("Expected to find a memory pool with name " + name);

    74     }

    76     private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) {

    77         MemoryUsage mu = pool.getUsage();

    78         long init = mu.getInit();

    79         long used = mu.getUsed();

    80         long committed = mu.getCommitted();

    81         long max = mu.getMax();

    83         assertGTE(init, 0L);

    84         assertGTE(used, init);

    85         assertGTE(committed, used);

    87         if (isMaxDefined) {

    88             assertGTE(max, committed);

    89         } else {

    90             assertEQ(max, -1L);

    91         }

    92     }

    93 }

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

test/gc/metaspace/TestMetaspaceMemoryPool.java@710a3c8b516e

test/gc/metaspace/TestMetaspaceMemoryPool.java