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:ShenandoahGCMode=iu", Mode.EXPERIMENTAL);
  53 
  54         testWith("-XX:ShenandoahGCHeuristics=aggressive", Mode.DIAGNOSTIC);
  55         testWith("-XX:ShenandoahGCHeuristics=passive", Mode.DIAGNOSTIC);
  56     }
  57 
  58     private static void testWith(String h, Mode mode) throws Exception {
  59         if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test
  60             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  61                     "-XX:-UnlockDiagnosticVMOptions",
  62                     "-XX:-UnlockExperimentalVMOptions",
  63                     "-XX:+UseShenandoahGC",
  64                     h,
  65                     "-version"
  66             );
  67             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  68             switch (mode) {
  69                 case PRODUCT:
  70                     output.shouldHaveExitValue(0);
  71                     break;
  72                 case DIAGNOSTIC:
  73                 case EXPERIMENTAL:
  74                     output.shouldNotHaveExitValue(0);
  75                     break;
  76             }
  77         }
  78 
  79         if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test
  80             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  81                     "-XX:+UnlockDiagnosticVMOptions",
  82                     "-XX:-UnlockExperimentalVMOptions",
  83                     "-XX:+UseShenandoahGC",
  84                     h,
  85                     "-version"
  86             );
  87             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  88             switch (mode) {
  89                 case PRODUCT:
  90                 case DIAGNOSTIC:
  91                     output.shouldHaveExitValue(0);
  92                     break;
  93                 case EXPERIMENTAL:
  94                     output.shouldNotHaveExitValue(0);
  95                     break;
  96             }
  97         }
  98 
  99         {
 100             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 101                     "-XX:-UnlockDiagnosticVMOptions",
 102                     "-XX:+UnlockExperimentalVMOptions",
 103                     "-XX:+UseShenandoahGC",
 104                     h,
 105                     "-version"
 106             );
 107             OutputAnalyzer output = new OutputAnalyzer(pb.start());
 108             switch (mode) {
 109                 case PRODUCT:
 110                 case EXPERIMENTAL:
 111                     output.shouldHaveExitValue(0);
 112                     break;
 113                 case DIAGNOSTIC:
 114                     output.shouldNotHaveExitValue(0);
 115                     break;
 116             }
 117         }
 118     }
 119 
 120 }