1 /*
   2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 /*
  25  * @test TestClassUnloadingArguments
  26  * @summary Test that loop mining arguments are sane
  27  * @key gc
  28  * @library /testlibrary
  29  *
  30  * @run driver TestClassUnloadingArguments
  31  */
  32 
  33 import java.util.*;
  34 
  35 import com.oracle.java.testlibrary.*;
  36 
  37 public class TestClassUnloadingArguments {
  38 
  39     public static void testWith(String msg, boolean cu, boolean cuConc, String... args) throws Exception {
  40         String[] cmds = Arrays.copyOf(args, args.length + 2);
  41         cmds[args.length] = "-XX:+PrintFlagsFinal";
  42         cmds[args.length + 1] = "-version";
  43         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
  44         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  45         output.shouldHaveExitValue(0);
  46         output.shouldContain("ClassUnloading");
  47         output.shouldContain("ClassUnloadingWithConcurrentMark");
  48 
  49         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloading.+?= (.+?) (.+?)", 2),
  50                 Boolean.toString(cu),
  51                 msg + ", but got wrong ClassUnloading");
  52         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloadingWithConcurrentMark.+?= (.+?) (.+?)", 2),
  53                 Boolean.toString(cuConc),
  54                 msg + ", but got wrong ClassUnloadingWithConcurrentMark");
  55     }
  56 
  57     public static void main(String[] args) throws Exception {
  58         testDefaultGC();
  59         testShenandoah();
  60     }
  61 
  62     public static void testDefaultGC() throws Exception {
  63         testWith("Default GC should have class unloading enabled",
  64                 true, true);
  65 
  66 // Not in JDK 8 and Parallel GC
  67 //        testWith("Default GC should disable everything",
  68 //            false, false,
  69 //            "-XX:-ClassUnloading");
  70 
  71         testWith("Default GC should disable conc unload",
  72                 true, false,
  73                 "-XX:-ClassUnloadingWithConcurrentMark");
  74 
  75 // Not in JDK 8 and Parallel GC
  76 //        testWith("Default GC should not let conc unload to be enabled separately",
  77 //            false, false,
  78 //            "-XX:-ClassUnloading",
  79 //            "-XX:+ClassUnloadingWithConcurrentMark");
  80     }
  81 
  82     public static void testShenandoah() throws Exception {
  83         testWith("Shenandoah GC should have class unloading enabled",
  84                 true, false,
  85                 "-XX:+UnlockExperimentalVMOptions",
  86                 "-XX:+UseShenandoahGC");
  87 
  88         testWith("Shenandoah GC should disable everything",
  89                 false, false,
  90                 "-XX:+UnlockExperimentalVMOptions",
  91                 "-XX:+UseShenandoahGC",
  92                 "-XX:-ClassUnloading");
  93 
  94         testWith("Shenandoah GC should enable conc unload",
  95                 true, true,
  96                 "-XX:+UnlockExperimentalVMOptions",
  97                 "-XX:+UseShenandoahGC",
  98                 "-XX:+ClassUnloadingWithConcurrentMark");
  99 
 100         testWith("Shenandoah GC should not let conc unload to be enabled separately",
 101                 false, false,
 102                 "-XX:+UnlockExperimentalVMOptions",
 103                 "-XX:+UseShenandoahGC",
 104                 "-XX:-ClassUnloading",
 105                 "-XX:+ClassUnloadingWithConcurrentMark");
 106     }
 107 
 108 }