1 /*
   2  * Copyright (c) 2017, 2018, 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 TestExplicitGC
  26  * @summary Test that Shenandoah reacts to explicit GC flags appropriately
  27  * @key gc
  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                     "-XX:+UnlockExperimentalVMOptions",
  65                     "-XX:+UseShenandoahGC",
  66                     "-Xlog:gc",
  67                     TestExplicitGC.class.getName(),
  68                     "test");
  69             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  70             for (String p : full) {
  71                 output.shouldNotContain(p);
  72             }
  73             for (String p : concNormal) {
  74                 output.shouldContain(p);
  75             }
  76         }
  77 
  78         {
  79             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  80                     "-XX:+UnlockExperimentalVMOptions",
  81                     "-XX:+UseShenandoahGC",
  82                     "-Xlog:gc",
  83                     "-XX:+DisableExplicitGC",
  84                     TestExplicitGC.class.getName(),
  85                     "test");
  86             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  87             for (String p : full) {
  88                 output.shouldNotContain(p);
  89             }
  90             for (String p : concNormal) {
  91                 output.shouldNotContain(p);
  92             }
  93         }
  94 
  95         {
  96             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  97                     "-XX:+UnlockExperimentalVMOptions",
  98                     "-XX:+UseShenandoahGC",
  99                     "-Xlog:gc",
 100                     "-XX:+ExplicitGCInvokesConcurrent",
 101                     TestExplicitGC.class.getName(),
 102                     "test");
 103             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 104             for (String p : full) {
 105                 output.shouldNotContain(p);
 106             }
 107             for (String p : concNormal) {
 108                 output.shouldContain(p);
 109             }
 110         }
 111 
 112         {
 113             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 114                     "-XX:+UnlockExperimentalVMOptions",
 115                     "-XX:+UseShenandoahGC",
 116                     "-Xlog:gc",
 117                     "-XX:-ExplicitGCInvokesConcurrent",
 118                     TestExplicitGC.class.getName(),
 119                     "test");
 120             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 121             for (String p : full) {
 122                 output.shouldContain(p);
 123             }
 124             for (String p : concNormal) {
 125                 output.shouldNotContain(p);
 126             }
 127         }
 128 
 129         {
 130             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 131                     "-XX:+UnlockExperimentalVMOptions",
 132                     "-XX:+UseShenandoahGC",
 133                     "-Xlog:gc",
 134                     "-XX:+ExplicitGCInvokesConcurrent",
 135                     "-XX:ShenandoahGCMode=iu",
 136                     TestExplicitGC.class.getName(),
 137                     "test");
 138             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 139             for (String p : full) {
 140                 output.shouldNotContain(p);
 141             }
 142             for (String p : concNormal) {
 143                 output.shouldContain(p);
 144             }
 145          }
 146     }
 147 }