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  * @library /testlibrary
  29  *
  30  * @run driver TestExplicitGC
  31  */
  32 
  33 import com.oracle.java.testlibrary.*;
  34 
  35 public class TestExplicitGC {
  36 
  37     enum Mode {
  38         PRODUCT,
  39         DIAGNOSTIC,
  40         EXPERIMENTAL,
  41     }
  42 
  43     public static void main(String[] args) throws Exception {
  44         if (args.length > 0) {
  45             System.out.println("Calling System.gc()");
  46             System.gc();
  47             return;
  48         }
  49 
  50         String[] full = new String[] {
  51                 "Pause Full"
  52         };
  53 
  54         String[] concNormal = new String[] {
  55                 "Pause Init Mark",
  56                 "Pause Final Mark",
  57         };
  58 
  59         {
  60             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  61                     "-Xmx128m",
  62                     "-XX:+UnlockExperimentalVMOptions",
  63                     "-XX:+UseShenandoahGC",
  64                     "-verbose:gc",
  65                     TestExplicitGC.class.getName(),
  66                     "test");
  67             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  68             for (String p : full) {
  69                 output.shouldNotContain(p);
  70             }
  71             for (String p : concNormal) {
  72                 output.shouldContain(p);
  73             }
  74         }
  75 
  76         {
  77             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  78                     "-Xmx128m",
  79                     "-XX:+UnlockExperimentalVMOptions",
  80                     "-XX:+UseShenandoahGC",
  81                     "-verbose:gc",
  82                     "-XX:+DisableExplicitGC",
  83                     TestExplicitGC.class.getName(),
  84                     "test");
  85             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  86             for (String p : full) {
  87                 output.shouldNotContain(p);
  88             }
  89             for (String p : concNormal) {
  90                 output.shouldNotContain(p);
  91             }
  92         }
  93 
  94         {
  95             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  96                     "-Xmx128m",
  97                     "-XX:+UnlockExperimentalVMOptions",
  98                     "-XX:+UseShenandoahGC",
  99                     "-verbose: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                     "-Xmx128m",
 115                     "-XX:+UnlockExperimentalVMOptions",
 116                     "-XX:+UseShenandoahGC",
 117                     "-verbose:gc",
 118                     "-XX:-ExplicitGCInvokesConcurrent",
 119                     TestExplicitGC.class.getName(),
 120                     "test");
 121             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 122             for (String p : full) {
 123                 output.shouldContain(p);
 124             }
 125             for (String p : concNormal) {
 126                 output.shouldNotContain(p);
 127             }
 128         }
 129 
 130         {
 131             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 132                     "-Xmx128m",
 133                     "-XX:+UnlockExperimentalVMOptions",
 134                     "-XX:+UseShenandoahGC",
 135                     "-verbose:gc",
 136                     "-XX:+ExplicitGCInvokesConcurrent",
 137                     "-XX:ShenandoahGCMode=iu",
 138                     TestExplicitGC.class.getName(),
 139                     "test");
 140             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 141             for (String p : full) {
 142                 output.shouldNotContain(p);
 143             }
 144             for (String p : concNormal) {
 145                 output.shouldContain(p);
 146             }
 147          }
 148     }
 149 }