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 & !vm.graal.enabled
  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("Short period with " + h,
  71                     true,
  72                     "-Xlog:gc",
  73                     "-XX:+UnlockDiagnosticVMOptions",
  74                     "-XX:+UnlockExperimentalVMOptions",
  75                     "-XX:+UseShenandoahGC",
  76                     "-XX:ShenandoahGCHeuristics=" + h,
  77                     "-XX:ShenandoahGuaranteedGCInterval=1000"
  78             );
  79 
  80             testWith("Long period with " + h,
  81                     false,
  82                     "-Xlog:gc",
  83                     "-XX:+UnlockDiagnosticVMOptions",
  84                     "-XX:+UnlockExperimentalVMOptions",
  85                     "-XX:+UseShenandoahGC",
  86                     "-XX:ShenandoahGCHeuristics=" + h,
  87                     "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
  88             );
  89         }
  90 
  91         testWith("Short period with traversal mode",
  92                  true,
  93                  "-Xlog:gc",
  94                  "-XX:+UnlockDiagnosticVMOptions",
  95                  "-XX:+UnlockExperimentalVMOptions",
  96                  "-XX:+UseShenandoahGC",
  97                  "-XX:ShenandoahGCMode=traversal",
  98                  "-XX:ShenandoahGuaranteedGCInterval=1000"
  99         );
 100 
 101         testWith("Long period with traversal mode",
 102                  false,
 103                  "-Xlog:gc",
 104                  "-XX:+UnlockDiagnosticVMOptions",
 105                  "-XX:+UnlockExperimentalVMOptions",
 106                  "-XX:+UseShenandoahGC",
 107                  "-XX:ShenandoahGCMode=traversal",
 108                  "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
 109         );
 110 
 111         testWith("Short period with aggressive",
 112                  false,
 113                  "-Xlog:gc",
 114                  "-XX:+UnlockDiagnosticVMOptions",
 115                  "-XX:+UnlockExperimentalVMOptions",
 116                  "-XX:+UseShenandoahGC",
 117                  "-XX:ShenandoahGCHeuristics=aggressive",
 118                  "-XX:ShenandoahGuaranteedGCInterval=1000"
 119         );
 120         testWith("Short period with passive",
 121                  false,
 122                  "-Xlog:gc",
 123                  "-XX:+UnlockDiagnosticVMOptions",
 124                  "-XX:+UnlockExperimentalVMOptions",
 125                  "-XX:+UseShenandoahGC",
 126                  "-XX:ShenandoahGCMode=passive",
 127                  "-XX:ShenandoahGuaranteedGCInterval=1000"
 128         );
 129     }
 130 
 131 }