1 /*
   2  * Copyright (c) 2018, 2019, 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 TestClassUnloadingArguments
  27  * @summary Test that loop mining arguments are sane
  28  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  29  * @library /test/lib
  30  * @run driver TestClassUnloadingArguments
  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 TestClassUnloadingArguments {
  40 
  41     public static void testWith(String msg, boolean cu, boolean cuConc, String... args) throws Exception {
  42         String[] cmds = Arrays.copyOf(args, args.length + 3);
  43         cmds[args.length] = "-Xmx128m";
  44         cmds[args.length + 1] = "-XX:+PrintFlagsFinal";
  45         cmds[args.length + 2] = "-version";
  46         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
  47         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  48         output.shouldHaveExitValue(0);
  49         output.shouldContain("ClassUnloading");
  50         output.shouldContain("ClassUnloadingWithConcurrentMark");
  51 
  52         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloading.+?= (.+?) (.+?)", 2),
  53                 Boolean.toString(cu),
  54                 msg + ", but got wrong ClassUnloading");
  55         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloadingWithConcurrentMark.+?= (.+?) (.+?)", 2),
  56                 Boolean.toString(cuConc),
  57                 msg + ", but got wrong ClassUnloadingWithConcurrentMark");
  58     }
  59 
  60     public static void main(String[] args) throws Exception {
  61         testDefaultGC();
  62         testShenandoah();
  63     }
  64 
  65     public static void testDefaultGC() throws Exception {
  66         testWith("Default GC should have class unloading enabled",
  67                 true, true);
  68 
  69         testWith("Default GC should disable everything",
  70                 false, false,
  71                 "-XX:-ClassUnloading");
  72 
  73         testWith("Default GC should disable conc unload",
  74                 true, false,
  75                 "-XX:-ClassUnloadingWithConcurrentMark");
  76 
  77         testWith("Default GC should not let conc unload to be enabled separately",
  78                 false, false,
  79                 "-XX:-ClassUnloading",
  80                 "-XX:+ClassUnloadingWithConcurrentMark");
  81     }
  82 
  83     public static void testShenandoah() throws Exception {
  84         testWith("Shenandoah GC should have class unloading enabled",
  85                 true, true,
  86                 "-XX:+UnlockExperimentalVMOptions",
  87                 "-XX:+UseShenandoahGC");
  88 
  89         testWith("Shenandoah GC should disable everything",
  90                 false, false,
  91                 "-XX:+UnlockExperimentalVMOptions",
  92                 "-XX:+UseShenandoahGC",
  93                 "-XX:-ClassUnloading");
  94 
  95         testWith("Shenandoah GC should enable conc unload",
  96                 true, true,
  97                 "-XX:+UnlockExperimentalVMOptions",
  98                 "-XX:+UseShenandoahGC",
  99                 "-XX:+ClassUnloadingWithConcurrentMark");
 100 
 101         testWith("Shenandoah GC should not let conc unload to be enabled separately",
 102                 false, false,
 103                 "-XX:+UnlockExperimentalVMOptions",
 104                 "-XX:+UseShenandoahGC",
 105                 "-XX:-ClassUnloading",
 106                 "-XX:+ClassUnloadingWithConcurrentMark");
 107     }
 108 
 109 }