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