rev 58558 : 8241605: Shenandoah: More aggressive reference discovery

   1 /*
   2  * Copyright (c) 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 /* @test TestWrongBarrierDisable
  26  * @summary Test that disabling wrong barriers fails early
  27  * @key gc
  28  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  29  * @library /test/lib
  30  * @run main/othervm TestWrongBarrierDisable
  31  */
  32 
  33 import java.util.*;
  34 
  35 import jdk.test.lib.process.ProcessTools;
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 
  38 public class TestWrongBarrierDisable {
  39 
  40     public static void main(String[] args) throws Exception {
  41         String[] concurrent = {
  42                 "ShenandoahLoadRefBarrier",
  43                 "ShenandoahCASBarrier",
  44                 "ShenandoahCloneBarrier",
  45                 "ShenandoahSATBBarrier",

  46         };
  47 
  48         String[] traversal = {
  49                 "ShenandoahLoadRefBarrier",
  50                 "ShenandoahCASBarrier",
  51                 "ShenandoahCloneBarrier",
  52         };
  53 
  54         shouldFailAll("-XX:ShenandoahGCHeuristics=adaptive",   concurrent);
  55         shouldFailAll("-XX:ShenandoahGCHeuristics=static",     concurrent);
  56         shouldFailAll("-XX:ShenandoahGCHeuristics=compact",    concurrent);
  57         shouldFailAll("-XX:ShenandoahGCHeuristics=aggressive", concurrent);
  58         shouldFailAll("-XX:ShenandoahGCMode=traversal",        traversal);
  59         shouldPassAll("-XX:ShenandoahGCMode=passive",          concurrent);
  60         shouldPassAll("-XX:ShenandoahGCMode=passive",          traversal);
  61     }
  62 
  63     private static void shouldFailAll(String h, String[] barriers) throws Exception {
  64         for (String b : barriers) {
  65             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  66                     "-XX:+UnlockDiagnosticVMOptions",
  67                     "-XX:+UnlockExperimentalVMOptions",
  68                     "-XX:+UseShenandoahGC",
  69                     h,
  70                     "-XX:-" + b,
  71                     "-version"
  72             );
  73             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  74             output.shouldNotHaveExitValue(0);
  75             output.shouldContain("Heuristics needs ");
  76             output.shouldContain("to work correctly");
  77         }
  78     }
  79 
  80     private static void shouldPassAll(String h, String[] barriers) throws Exception {
  81         for (String b : barriers) {
  82             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  83                     "-XX:+UnlockDiagnosticVMOptions",
  84                     "-XX:+UnlockExperimentalVMOptions",
  85                     "-XX:+UseShenandoahGC",
  86                     h,
  87                     "-XX:-" + b,
  88                     "-version"
  89             );
  90             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  91             output.shouldHaveExitValue(0);
  92         }
  93     }
  94 
  95 }
--- EOF ---