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
 27  * @summary Test that Shenandoah reacts to explicit GC flags appropriately
 28  * @requires vm.gc.Shenandoah
 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             OutputAnalyzer output = ProcessTools.executeLimitedTestJava(
 64                     "-Xmx128m",
 65                     "-XX:+UnlockExperimentalVMOptions",
 66                     "-XX:+UseShenandoahGC",
 67                     "-Xlog:gc",
 68                     TestExplicitGC.class.getName(),
 69                     "test");
 70             for (String p : full) {
 71                 output.shouldNotContain(p);
 72             }
 73             for (String p : concNormal) {
 74                 output.shouldContain(p);
 75             }
 76         }
 77 
 78         {
 79             OutputAnalyzer output = ProcessTools.executeLimitedTestJava(
 80                     "-Xmx128m",
 81                     "-XX:+UnlockExperimentalVMOptions",
 82                     "-XX:+UseShenandoahGC",
 83                     "-Xlog:gc",
 84                     "-XX:+DisableExplicitGC",
 85                     TestExplicitGC.class.getName(),
 86                     "test");
 87             for (String p : full) {
 88                 output.shouldNotContain(p);
 89             }
 90             for (String p : concNormal) {
 91                 output.shouldNotContain(p);
 92             }
 93         }
 94 
 95         {
 96             OutputAnalyzer output = ProcessTools.executeLimitedTestJava(
 97                     "-Xmx128m",
 98                     "-XX:+UnlockExperimentalVMOptions",
 99                     "-XX:+UseShenandoahGC",
100                     "-Xlog:gc",
101                     "-XX:+ExplicitGCInvokesConcurrent",
102                     TestExplicitGC.class.getName(),
103                     "test");
104             for (String p : full) {
105                 output.shouldNotContain(p);
106             }
107             for (String p : concNormal) {
108                 output.shouldContain(p);
109             }
110         }
111 
112         {
113             OutputAnalyzer output = ProcessTools.executeLimitedTestJava(
114                     "-Xmx128m",
115                     "-XX:+UnlockExperimentalVMOptions",
116                     "-XX:+UseShenandoahGC",
117                     "-Xlog:gc",
118                     "-XX:-ExplicitGCInvokesConcurrent",
119                     TestExplicitGC.class.getName(),
120                     "test");
121             for (String p : full) {
122                 output.shouldContain(p);
123             }
124             for (String p : concNormal) {
125                 output.shouldNotContain(p);
126             }
127         }
128     }
129 }