1 /*
   2  * Copyright (c) 2017, 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 When dumping the CDS archive, try to cause garbage collection while classes are being loaded.
  28  * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes
  29  * @requires vm.cds
  30  * @requires vm.flavor != "minimal"
  31  * @run driver GCDuringDump
  32  */
  33 
  34 import jdk.test.lib.cds.CDSOptions;
  35 import jdk.test.lib.process.OutputAnalyzer;
  36 import jdk.test.lib.process.ProcessTools;
  37 
  38 public class GCDuringDump {
  39     public static String appClasses[] = {
  40         Hello.class.getName(),
  41     };
  42     public static String agentClasses[] = {
  43         GCDuringDumpTransformer.class.getName(),
  44     };
  45 
  46     public static void main(String[] args) throws Throwable {
  47         String agentJar =
  48             ClassFileInstaller.writeJar("GCDuringDumpTransformer.jar",
  49                                         ClassFileInstaller.Manifest.fromSourceFile("GCDuringDumpTransformer.mf"),
  50                                         agentClasses);
  51 
  52         String appJar =
  53             ClassFileInstaller.writeJar("GCDuringDumpApp.jar", appClasses);
  54 
  55         String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ?
  56             "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion";
  57 
  58         for (int i=0; i<2; i++) {
  59             // i = 0 -- run without agent = no extra GCs
  60             // i = 1 -- run with agent = cause extra GCs
  61 
  62             String extraArg = (i == 0) ? "-showversion" : "-javaagent:" + agentJar;
  63             String extraOption = (i == 0) ? "-showversion" : "-XX:+AllowArchivingWithJavaAgent";
  64 
  65             TestCommon.testDump(appJar, TestCommon.list(Hello.class.getName()),
  66                                 "-XX:+UnlockDiagnosticVMOptions", extraOption,
  67                                 extraArg, "-Xmx32m", gcLog);
  68 
  69             TestCommon.run(
  70                 "-cp", appJar,
  71                 "-Xmx32m",
  72                 "-XX:+PrintSharedSpaces",
  73                 "-XX:+UnlockDiagnosticVMOptions", extraOption,
  74                 gcLog,
  75                 Hello.class.getName())
  76               .assertNormalExit();
  77         }
  78     }
  79 }
  80