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