1 /*
   2  * Copyright (c) 2017, 2018, 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 TestHeuristicsUnlock
  27  * @summary Test that Shenandoah heuristics are unlocked properly
  28  * @key gc
  29  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  30  * @library /test/lib
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @run driver TestHeuristicsUnlock
  34  */
  35 
  36 import jdk.test.lib.process.ProcessTools;
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 public class TestHeuristicsUnlock {
  40 
  41     enum Mode {
  42         PRODUCT,
  43         DIAGNOSTIC,
  44         EXPERIMENTAL,
  45     }
  46 
  47     public static void main(String[] args) throws Exception {
  48         testWith("-XX:ShenandoahGCHeuristics=adaptive", Mode.PRODUCT);
  49         testWith("-XX:ShenandoahGCHeuristics=static", Mode.PRODUCT);
  50         testWith("-XX:ShenandoahGCHeuristics=compact", Mode.PRODUCT);
  51 
  52         testWith("-XX:ShenandoahGCHeuristics=aggressive", Mode.DIAGNOSTIC);
  53         testWith("-XX:ShenandoahGCHeuristics=passive", Mode.DIAGNOSTIC);
  54     }
  55 
  56     private static void testWith(String h, Mode mode) throws Exception {
  57         if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test
  58             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  59                     "-XX:-UnlockDiagnosticVMOptions",
  60                     "-XX:-UnlockExperimentalVMOptions",
  61                     "-XX:+UseShenandoahGC",
  62                     h,
  63                     "-version"
  64             );
  65             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  66             switch (mode) {
  67                 case PRODUCT:
  68                     output.shouldHaveExitValue(0);
  69                     break;
  70                 case DIAGNOSTIC:
  71                 case EXPERIMENTAL:
  72                     output.shouldNotHaveExitValue(0);
  73                     break;
  74             }
  75         }
  76 
  77         if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test
  78             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  79                     "-XX:+UnlockDiagnosticVMOptions",
  80                     "-XX:-UnlockExperimentalVMOptions",
  81                     "-XX:+UseShenandoahGC",
  82                     h,
  83                     "-version"
  84             );
  85             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  86             switch (mode) {
  87                 case PRODUCT:
  88                 case DIAGNOSTIC:
  89                     output.shouldHaveExitValue(0);
  90                     break;
  91                 case EXPERIMENTAL:
  92                     output.shouldNotHaveExitValue(0);
  93                     break;
  94             }
  95         }
  96 
  97         {
  98             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  99                     "-XX:-UnlockDiagnosticVMOptions",
 100                     "-XX:+UnlockExperimentalVMOptions",
 101                     "-XX:+UseShenandoahGC",
 102                     h,
 103                     "-version"
 104             );
 105             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 106             switch (mode) {
 107                 case PRODUCT:
 108                 case EXPERIMENTAL:
 109                     output.shouldHaveExitValue(0);
 110                     break;
 111                 case DIAGNOSTIC:
 112                     output.shouldNotHaveExitValue(0);
 113                     break;
 114             }
 115         }
 116     }
 117 
 118 }