1 /*

     2  * Copyright (c) 2018, 2019, 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  *

    23  */

    24 

    25 /*

    26  * @test

    27  * @summary Test how CDS dumping handles the existence of humongous G1 regions.

    28  * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes

    29  * @requires vm.cds.archived.java.heap

    30  * @requires vm.flavor != "minimal"

    31  * @build HumongousDuringDumpTransformer Hello

    32  * @run main/othervm/timeout=240 HumongousDuringDump

    33  */

    34 

    35 import jdk.test.lib.cds.CDSOptions;

    36 import jdk.test.lib.process.OutputAnalyzer;

    37 import jdk.test.lib.process.ProcessTools;

    38 

    39 public class HumongousDuringDump {

    40     public static String appClasses[] = {

    41         "Hello",

    42     };

    43     public static String agentClasses[] = {

    44         "HumongousDuringDumpTransformer",

    45     };

    46 

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

    48         String agentJar =

    49             ClassFileInstaller.writeJar("HumongousDuringDumpTransformer.jar",

    50                                         ClassFileInstaller.Manifest.fromSourceFile("HumongousDuringDumpTransformer.mf"),

    51                                         agentClasses);

    52 

    53         String appJar =

    54             ClassFileInstaller.writeJar("HumongousDuringDumpApp.jar", appClasses);

    55 

    56         String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ?

    57             "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion";

    58 

    59         String extraArg = "-javaagent:" + agentJar;

    60         String extraOption = "-XX:+AllowArchivingWithJavaAgent";

    61 

    62         OutputAnalyzer out =

    63           TestCommon.testDump(appJar, TestCommon.list("Hello"),

    64                               "-XX:+UnlockDiagnosticVMOptions", extraOption,

    65                               "-Xlog:gc+region+cds",

    66                               "-Xlog:gc+region=trace",

    67                               extraArg, "-Xmx64m", gcLog);

    68         out.shouldContain("(Unmovable) humongous regions have been found and may lead to fragmentation");

    69         out.shouldContain("All free regions should be at the top end of the heap, but we found holes.");

    70         out.shouldMatch("gc,region,cds. HeapRegion .* HUM. hole");

    71         String pattern = "gc,region,cds. HeapRegion .*hole";

    72         out.shouldMatch(pattern);

    73         out.shouldNotMatch(pattern + ".*unexpected");

    74 

    75         TestCommon.run(

    76                 "-cp", appJar,

    77                 "-verbose",

    78                 "-Xmx64m",

    79                 "-XX:+PrintSharedSpaces",

    80                 "-XX:+UnlockDiagnosticVMOptions", extraOption,

    81                 gcLog,

    82                 "Hello")

    83               .assertNormalExit();

    84     }

    85 }

    86