1 /*
   2  * Copyright (c) 2018, 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 /test/hotspot/jtreg/runtime/cds/test-classes
  29  * @requires vm.cds.archived.java.heap
  30  * @requires vm.flavor != "minimal"
  31  * @modules java.base/jdk.internal.misc
  32  *          jdk.jartool/sun.tools.jar
  33  *          java.management
  34  * @build HumongousDuringDumpTransformer Hello
  35  * @run main/othervm/timeout=240 HumongousDuringDump
  36  */
  37 
  38 import jdk.test.lib.cds.CDSOptions;
  39 import jdk.test.lib.process.OutputAnalyzer;
  40 import jdk.test.lib.process.ProcessTools;
  41 
  42 public class HumongousDuringDump {
  43     public static String appClasses[] = {
  44         "Hello",
  45     };
  46     public static String agentClasses[] = {
  47         "HumongousDuringDumpTransformer",
  48     };
  49 
  50     public static void main(String[] args) throws Throwable {
  51         String agentJar =
  52             ClassFileInstaller.writeJar("HumongousDuringDumpTransformer.jar",
  53                                         ClassFileInstaller.Manifest.fromSourceFile("HumongousDuringDumpTransformer.mf"),
  54                                         agentClasses);
  55 
  56         String appJar =
  57             ClassFileInstaller.writeJar("HumongousDuringDumpApp.jar", appClasses);
  58 
  59         String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ?
  60             "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion";
  61 
  62         String extraArg = "-javaagent:" + agentJar;
  63         String extraOption = "-XX:+AllowArchivingWithJavaAgent";
  64 
  65         OutputAnalyzer out =
  66           TestCommon.testDump(appJar, TestCommon.list("Hello"),
  67                               "-XX:+UnlockDiagnosticVMOptions", extraOption,
  68                               "-Xlog:gc+region+cds",
  69                               "-Xlog:gc+region=trace",
  70                               extraArg, "-Xmx64m", gcLog);
  71         out.shouldContain("(Unmovable) humongous regions have been found and may lead to fragmentation");
  72         out.shouldContain("All free regions should be at the top end of the heap, but we found holes.");
  73         out.shouldMatch("gc,region,cds. HeapRegion .* HUM. hole");
  74         String pattern = "gc,region,cds. HeapRegion .*hole";
  75         out.shouldMatch(pattern);
  76         out.shouldNotMatch(pattern + ".*unexpected");
  77 
  78         TestCommon.run(
  79                 "-cp", appJar,
  80                 "-verbose",
  81                 "-Xmx64m",
  82                 "-XX:+PrintSharedSpaces",
  83                 "-XX:+UnlockDiagnosticVMOptions", extraOption,
  84                 gcLog,
  85                 "Hello")
  86               .assertNormalExit();
  87     }
  88 }
  89