1 /*
   2  * Copyright (c) 2019, Red Hat, Inc. 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 TestObjIterWithHeapDump
  27  * @summary Test heap dump triggered heap object iteration
  28  * @bug 8225014
  29  * @requires vm.gc.Shenandoah
  30  * @library /test/lib
  31  * @run driver TestObjItrWithHeapDump
  32  */
  33 
  34 import java.util.*;
  35 
  36 import jdk.test.lib.process.ProcessTools;
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 public class TestObjItrWithHeapDump {
  40     public static void testWith(String... args) throws Exception {
  41         String[] cmds = Arrays.copyOf(args, args.length + 2);
  42         cmds[args.length] = TestObjItrWithHeapDump.class.getName();
  43         cmds[args.length + 1] = "test";
  44         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
  45 
  46         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  47         output.shouldHaveExitValue(0);
  48         output.shouldContain("Class Histogram (before full gc)");
  49         output.shouldContain("Class Histogram (after full gc)");
  50     }
  51 
  52     public static void main(String[] args) throws Exception {
  53         if (args.length > 0 && args[0].equals("test")) {
  54             System.gc();
  55             System.exit(0);
  56         }
  57 
  58         String[][][] modeHeuristics = new String[][][] {
  59              {{"satb"},    {"adaptive", "compact", "static", "aggressive"}},
  60              {{"iu"},      {"adaptive", "aggressive"}},
  61              {{"passive"}, {"passive"}}
  62         };
  63 
  64         for (String[][] mh : modeHeuristics) {
  65             String mode = mh[0][0];
  66             String[] heuristics = mh[1];
  67             for (String h : heuristics) {
  68                 testWith("-XX:+UnlockDiagnosticVMOptions",
  69                          "-XX:+UnlockExperimentalVMOptions",
  70                          "-XX:+UseShenandoahGC",
  71                          "-XX:-ShenandoahDegeneratedGC",
  72                          "-XX:ShenandoahGCMode=" + mode,
  73                          "-XX:ShenandoahGCHeuristics=" + h,
  74                          "-Xlog:gc+classhisto=trace",
  75                          "-XX:-ExplicitGCInvokesConcurrent",
  76                          "-Xmx512M"
  77                 );
  78             }
  79         }
  80     }
  81 }