1 /*

     2  * Copyright (c) 2019, Red Hat, Inc. All rights reserved.

     3  *

     4  * This code is free software; you can redistribute it and/or modify it

     5  * under the terms of the GNU General Public License version 2 only, as

     6  * published by the Free Software Foundation.

     7  *

     8  * This code is distributed in the hope that it will be useful, but WITHOUT

     9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    11  * version 2 for more details (a copy is included in the LICENSE file that

    12  * accompanied this code).

    13  *

    14  * You should have received a copy of the GNU General Public License version

    15  * 2 along with this work; if not, write to the Free Software Foundation,

    16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    17  *

    18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    19  * or visit www.oracle.com if you need additional information or have any

    20  * questions.

    21  *

    22  */

    23 

    24 /*

    25  * @test TestObjIterWithHeapDump

    26  * @summary Test heap dump triggered heap object iteration

    27  * @key gc

    28  * @bug 8225014

    29  * @requires vm.gc.Shenandoah & !vm.graal.enabled

    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              {{"normal"},    {"adaptive", "compact", "static", "aggressive"}},

    60              {{"traversal"}, {"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 }