1 /*
  2  * Copyright (c) 2017, 2020, 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 periodic GC is working
 28  * @requires vm.gc.Shenandoah
 29  * @library /test/lib
 30  * @run driver TestPeriodicGC
 31  */
 32 
 33 import java.util.*;
 34 
 35 import jdk.test.lib.Asserts;
 36 import jdk.test.lib.process.ProcessTools;
 37 import jdk.test.lib.process.OutputAnalyzer;
 38 
 39 public class TestPeriodicGC {
 40 
 41     public static void testWith(String msg, boolean periodic, String... args) throws Exception {
 42         String[] cmds = Arrays.copyOf(args, args.length + 2);
 43         cmds[args.length] = TestPeriodicGC.class.getName();
 44         cmds[args.length + 1] = "test";
 45         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
 46 
 47         OutputAnalyzer output = new OutputAnalyzer(pb.start());
 48         output.shouldHaveExitValue(0);
 49         if (periodic && !output.getOutput().contains("Trigger: Time since last GC")) {
 50             throw new AssertionError(msg + ": Should have periodic GC in logs");
 51         }
 52         if (!periodic && output.getOutput().contains("Trigger: Time since last GC")) {
 53             throw new AssertionError(msg + ": Should not have periodic GC in logs");
 54         }
 55     }
 56 
 57     public static void main(String[] args) throws Exception {
 58         if (args.length > 0 && args[0].equals("test")) {
 59             Thread.sleep(5000); // stay idle
 60             return;
 61         }
 62 
 63         String[] enabled = new String[] {
 64                 "adaptive",
 65                 "compact",
 66                 "static",
 67         };
 68 
 69         for (String h : enabled) {
 70             testWith("Zero interval with " + h,
 71                     false,
 72                     "-Xlog:gc",
 73                     "-XX:+UnlockDiagnosticVMOptions",
 74                     "-XX:+UnlockExperimentalVMOptions",
 75                     "-XX:+UseShenandoahGC",
 76                     "-XX:ShenandoahGCHeuristics=" + h,
 77                     "-XX:ShenandoahGuaranteedGCInterval=0"
 78             );
 79 
 80             testWith("Short interval with " + h,
 81                     true,
 82                     "-Xlog:gc",
 83                     "-XX:+UnlockDiagnosticVMOptions",
 84                     "-XX:+UnlockExperimentalVMOptions",
 85                     "-XX:+UseShenandoahGC",
 86                     "-XX:ShenandoahGCHeuristics=" + h,
 87                     "-XX:ShenandoahGuaranteedGCInterval=1000"
 88             );
 89 
 90             testWith("Long interval with " + h,
 91                     false,
 92                     "-Xlog:gc",
 93                     "-XX:+UnlockDiagnosticVMOptions",
 94                     "-XX:+UnlockExperimentalVMOptions",
 95                     "-XX:+UseShenandoahGC",
 96                     "-XX:ShenandoahGCHeuristics=" + h,
 97                     "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
 98             );
 99         }
100 
101         testWith("Zero interval with iu mode",
102                  false,
103                  "-Xlog:gc",
104                  "-XX:+UnlockDiagnosticVMOptions",
105                  "-XX:+UnlockExperimentalVMOptions",
106                  "-XX:+UseShenandoahGC",
107                  "-XX:ShenandoahGCMode=iu",
108                  "-XX:ShenandoahGuaranteedGCInterval=0"
109         );
110 
111         testWith("Short interval with iu mode",
112                  true,
113                  "-Xlog:gc",
114                  "-XX:+UnlockDiagnosticVMOptions",
115                  "-XX:+UnlockExperimentalVMOptions",
116                  "-XX:+UseShenandoahGC",
117                  "-XX:ShenandoahGCMode=iu",
118                  "-XX:ShenandoahGuaranteedGCInterval=1000"
119         );
120 
121         testWith("Long interval with iu mode",
122                  false,
123                  "-Xlog:gc",
124                  "-XX:+UnlockDiagnosticVMOptions",
125                  "-XX:+UnlockExperimentalVMOptions",
126                  "-XX:+UseShenandoahGC",
127                  "-XX:ShenandoahGCMode=iu",
128                  "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
129         );
130 
131         testWith("Short interval with aggressive",
132                  false,
133                  "-Xlog:gc",
134                  "-XX:+UnlockDiagnosticVMOptions",
135                  "-XX:+UnlockExperimentalVMOptions",
136                  "-XX:+UseShenandoahGC",
137                  "-XX:ShenandoahGCHeuristics=aggressive",
138                  "-XX:ShenandoahGuaranteedGCInterval=1000"
139         );
140 
141         testWith("Zero interval with passive",
142                  false,
143                  "-Xlog:gc",
144                  "-XX:+UnlockDiagnosticVMOptions",
145                  "-XX:+UnlockExperimentalVMOptions",
146                  "-XX:+UseShenandoahGC",
147                  "-XX:ShenandoahGCMode=passive",
148                  "-XX:ShenandoahGuaranteedGCInterval=0"
149         );
150 
151         testWith("Short interval with passive",
152                  false,
153                  "-Xlog:gc",
154                  "-XX:+UnlockDiagnosticVMOptions",
155                  "-XX:+UnlockExperimentalVMOptions",
156                  "-XX:+UseShenandoahGC",
157                  "-XX:ShenandoahGCMode=passive",
158                  "-XX:ShenandoahGuaranteedGCInterval=1000"
159         );
160     }
161 
162 }