1 /*
   2  * Copyright (c) 2017, 2018, 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 TestExplicitGC
  27  * @summary Test that Shenandoah reacts to explicit GC flags appropriately
  28  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @run driver TestExplicitGC
  33  */
  34 
  35 import jdk.test.lib.process.ProcessTools;
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 
  38 public class TestExplicitGC {
  39 
  40     enum Mode {
  41         PRODUCT,
  42         DIAGNOSTIC,
  43         EXPERIMENTAL,
  44     }
  45 
  46     public static void main(String[] args) throws Exception {
  47         if (args.length > 0) {
  48             System.out.println("Calling System.gc()");
  49             System.gc();
  50             return;
  51         }
  52 
  53         String[] full = new String[] {
  54                 "Pause Full"
  55         };
  56 
  57         String[] concNormal = new String[] {
  58                 "Pause Init Mark",
  59                 "Pause Final Mark",
  60         };
  61 
  62         {
  63             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  64                     "-Xmx128m",
  65                     "-XX:+UnlockExperimentalVMOptions",
  66                     "-XX:+UseShenandoahGC",
  67                     "-Xlog:gc",
  68                     TestExplicitGC.class.getName(),
  69                     "test");
  70             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  71             for (String p : full) {
  72                 output.shouldNotContain(p);
  73             }
  74             for (String p : concNormal) {
  75                 output.shouldContain(p);
  76             }
  77         }
  78 
  79         {
  80             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  81                     "-Xmx128m",
  82                     "-XX:+UnlockExperimentalVMOptions",
  83                     "-XX:+UseShenandoahGC",
  84                     "-Xlog:gc",
  85                     "-XX:+DisableExplicitGC",
  86                     TestExplicitGC.class.getName(),
  87                     "test");
  88             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  89             for (String p : full) {
  90                 output.shouldNotContain(p);
  91             }
  92             for (String p : concNormal) {
  93                 output.shouldNotContain(p);
  94             }
  95         }
  96 
  97         {
  98             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  99                     "-Xmx128m",
 100                     "-XX:+UnlockExperimentalVMOptions",
 101                     "-XX:+UseShenandoahGC",
 102                     "-Xlog:gc",
 103                     "-XX:+ExplicitGCInvokesConcurrent",
 104                     TestExplicitGC.class.getName(),
 105                     "test");
 106             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 107             for (String p : full) {
 108                 output.shouldNotContain(p);
 109             }
 110             for (String p : concNormal) {
 111                 output.shouldContain(p);
 112             }
 113         }
 114 
 115         {
 116             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 117                     "-Xmx128m",
 118                     "-XX:+UnlockExperimentalVMOptions",
 119                     "-XX:+UseShenandoahGC",
 120                     "-Xlog:gc",
 121                     "-XX:-ExplicitGCInvokesConcurrent",
 122                     TestExplicitGC.class.getName(),
 123                     "test");
 124             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 125             for (String p : full) {
 126                 output.shouldContain(p);
 127             }
 128             for (String p : concNormal) {
 129                 output.shouldNotContain(p);
 130             }
 131         }
 132 
 133         {
 134             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 135                     "-Xmx128m",
 136                     "-XX:+UnlockExperimentalVMOptions",
 137                     "-XX:+UseShenandoahGC",
 138                     "-Xlog:gc",
 139                     "-XX:+ExplicitGCInvokesConcurrent",
 140                     "-XX:ShenandoahGCMode=iu",
 141                     TestExplicitGC.class.getName(),
 142                     "test");
 143             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 144             for (String p : full) {
 145                 output.shouldNotContain(p);
 146             }
 147             for (String p : concNormal) {
 148                 output.shouldContain(p);
 149             }
 150          }
 151     }
 152 }