jdk8-mips64-public/hotspot: test/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java@833b0f92429a

8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

     1 /*

     2  * Copyright (c) 2014, 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

    26  * @key gc

    27  * @bug 8049831

    28  * @library /testlibrary /testlibrary/whitebox

    29  * @build TestCMSClassUnloadingEnabledHWM AllocateBeyondMetaspaceSize

    30  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    31  * @run driver TestCMSClassUnloadingEnabledHWM

    32  * @summary Test that -XX:-CMSClassUnloadingEnabled will trigger a Full GC when more than MetaspaceSize metadata is allocated.

    33  */

    35 import com.oracle.java.testlibrary.OutputAnalyzer;

    36 import com.oracle.java.testlibrary.ProcessTools;

    38 import java.util.ArrayList;

    39 import java.util.Arrays;

    41 public class TestCMSClassUnloadingEnabledHWM {

    42   private static long MetaspaceSize = 32 * 1024 * 1024;

    43   private static long YoungGenSize  = 32 * 1024 * 1024;

    45   private static OutputAnalyzer run(boolean enableUnloading) throws Exception {

    46     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

    47       "-Xbootclasspath/a:.",

    48       "-XX:+UnlockDiagnosticVMOptions",

    49       "-XX:+WhiteBoxAPI",

    50       "-XX:MetaspaceSize=" + MetaspaceSize,

    51       "-Xmn" + YoungGenSize,

    52       "-XX:+UseConcMarkSweepGC",

    53       "-XX:" + (enableUnloading ? "+" : "-") + "CMSClassUnloadingEnabled",

    54       "-XX:+PrintHeapAtGC",

    55       "-XX:+PrintGCDetails",

    56       "AllocateBeyondMetaspaceSize",

    57       "" + MetaspaceSize,

    58       "" + YoungGenSize);

    59     return new OutputAnalyzer(pb.start());

    60   }

    62   public static OutputAnalyzer runWithCMSClassUnloading() throws Exception {

    63     return run(true);

    64   }

    66   public static OutputAnalyzer runWithoutCMSClassUnloading() throws Exception {

    67     return run(false);

    68   }

    70   public static void testWithoutCMSClassUnloading() throws Exception {

    71     // -XX:-CMSClassUnloadingEnabled is used, so we expect a full GC instead of a concurrent cycle.

    72     OutputAnalyzer out = runWithoutCMSClassUnloading();

    74     out.shouldMatch(".*Full GC.*");

    75     out.shouldNotMatch(".*CMS Initial Mark.*");

    76   }

    78   public static void testWithCMSClassUnloading() throws Exception {

    79     // -XX:+CMSClassUnloadingEnabled is used, so we expect a concurrent cycle instead of a full GC.

    80     OutputAnalyzer out = runWithCMSClassUnloading();

    82     out.shouldMatch(".*CMS Initial Mark.*");

    83     out.shouldNotMatch(".*Full GC.*");

    84   }

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

    87     testWithCMSClassUnloading();

    88     testWithoutCMSClassUnloading();

    89   }

    90 }

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

test/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java@833b0f92429a

test/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java