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                 "ShenandoahKeepAliveBarrier",
  47         };
  48 
  49         String[] traversal = {
  50                 "ShenandoahLoadRefBarrier",
  51                 "ShenandoahCASBarrier",
  52                 "ShenandoahCloneBarrier",
  53         };
  54 
  55         shouldFailAll("-XX:ShenandoahGCHeuristics=adaptive",   concurrent);
  56         shouldFailAll("-XX:ShenandoahGCHeuristics=static",     concurrent);
  57         shouldFailAll("-XX:ShenandoahGCHeuristics=compact",    concurrent);
  58         shouldFailAll("-XX:ShenandoahGCHeuristics=aggressive", concurrent);
  59         shouldFailAll("-XX:ShenandoahGCMode=traversal",        traversal);
  60         shouldPassAll("-XX:ShenandoahGCMode=passive",          concurrent);
  61         shouldPassAll("-XX:ShenandoahGCMode=passive",          traversal);
  62     }
  63 
  64     private static void shouldFailAll(String h, String[] barriers) throws Exception {
  65         for (String b : barriers) {
  66             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  67                     "-XX:+UnlockDiagnosticVMOptions",
  68                     "-XX:+UnlockExperimentalVMOptions",
  69                     "-XX:+UseShenandoahGC",
  70                     h,
  71                     "-XX:-" + b,
  72                     "-version"
  73             );
  74             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  75             output.shouldNotHaveExitValue(0);
  76             output.shouldContain("Heuristics needs ");
  77             output.shouldContain("to work correctly");
  78         }
  79     }
  80 
  81     private static void shouldPassAll(String h, String[] barriers) throws Exception {
  82         for (String b : barriers) {
  83             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  84                     "-XX:+UnlockDiagnosticVMOptions",
  85                     "-XX:+UnlockExperimentalVMOptions",
  86                     "-XX:+UseShenandoahGC",
  87                     h,
  88                     "-XX:-" + b,
  89                     "-version"
  90             );
  91             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  92             output.shouldHaveExitValue(0);
  93         }
  94     }
  95 
  96 }
--- EOF ---