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  * @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                 "traversal",
  68         };
  69 
  70         String[] disabled = new String[] {
  71                 "aggressive",
  72                 "passive",
  73         };
  74 
  75         for (String h : enabled) {
  76             testWith("Short period with " + h,
  77                     true,
  78                     "-Xlog:gc",
  79                     "-XX:+UnlockDiagnosticVMOptions",
  80                     "-XX:+UnlockExperimentalVMOptions",
  81                     "-XX:+UseShenandoahGC",
  82                     "-XX:ShenandoahGCHeuristics=" + h,
  83                     "-XX:ShenandoahGuaranteedGCInterval=1000"
  84             );
  85 
  86             testWith("Long period with " + h,
  87                     false,
  88                     "-Xlog:gc",
  89                     "-XX:+UnlockDiagnosticVMOptions",
  90                     "-XX:+UnlockExperimentalVMOptions",
  91                     "-XX:+UseShenandoahGC",
  92                     "-XX:ShenandoahGCHeuristics=" + h,
  93                     "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
  94             );
  95         }
  96 
  97         for (String h : disabled) {
  98             testWith("Short period with " + h,
  99                     false,
 100                     "-Xlog:gc",
 101                     "-XX:+UnlockDiagnosticVMOptions",
 102                     "-XX:+UnlockExperimentalVMOptions",
 103                     "-XX:+UseShenandoahGC",
 104                     "-XX:ShenandoahGCHeuristics=" + h,
 105                     "-XX:ShenandoahGuaranteedGCInterval=1000"
 106             );
 107         }
 108     }
 109 
 110 }