1 /*
   2  * Copyright (c) 2018 Red Hat, Inc. and/or its affiliates.
   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  * @run driver TestClassUnloadingArguments
  30  */
  31 
  32 import java.util.*;
  33 
  34 import com.oracle.java.testlibrary.*;
  35 
  36 public class TestClassUnloadingArguments {
  37 
  38     public static void testWith(String msg, boolean cu, boolean cuConc, String... args) throws Exception {
  39         String[] cmds = Arrays.copyOf(args, args.length + 2);
  40         cmds[args.length] = "-XX:+PrintFlagsFinal";
  41         cmds[args.length + 1] = "-version";
  42         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
  43         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  44         output.shouldHaveExitValue(0);
  45         output.shouldContain("ClassUnloading");
  46         output.shouldContain("ClassUnloadingWithConcurrentMark");
  47 
  48         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloading.+?= (.+?) (.+?)", 2),
  49                          Boolean.toString(cu),
  50                          msg + ", but got wrong ClassUnloading");
  51         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloadingWithConcurrentMark.+?= (.+?) (.+?)", 2),
  52                          Boolean.toString(cuConc),
  53                          msg + ", but got wrong ClassUnloadingWithConcurrentMark");
  54     }
  55 
  56     public static void main(String[] args) throws Exception {
  57         testDefaultGC();
  58         testShenandoah();
  59     }
  60 
  61     public static void testDefaultGC() throws Exception {
  62         testWith("Default GC should have class unloading enabled",
  63             true, true);
  64 
  65 // Not in JDK 8 and Parallel GC
  66 //        testWith("Default GC should disable everything",
  67 //            false, false,
  68 //            "-XX:-ClassUnloading");
  69 
  70         testWith("Default GC should disable conc unload",
  71             true, false,
  72             "-XX:-ClassUnloadingWithConcurrentMark");
  73 
  74 // Not in JDK 8 and Parallel GC
  75 //        testWith("Default GC should not let conc unload to be enabled separately",
  76 //            false, false,
  77 //            "-XX:-ClassUnloading",
  78 //            "-XX:+ClassUnloadingWithConcurrentMark");
  79     }
  80 
  81     public static void testShenandoah() throws Exception {
  82         testWith("Shenandoah GC should have class unloading enabled",
  83             true, false,
  84             "-XX:+UseShenandoahGC");
  85 
  86         testWith("Shenandoah GC should disable everything",
  87             false, false,
  88             "-XX:+UseShenandoahGC",
  89             "-XX:-ClassUnloading");
  90 
  91         testWith("Shenandoah GC should enable conc unload",
  92             true, true,
  93             "-XX:+UseShenandoahGC",
  94             "-XX:+ClassUnloadingWithConcurrentMark");
  95 
  96         testWith("Shenandoah GC should not let conc unload to be enabled separately",
  97             false, false,
  98             "-XX:+UseShenandoahGC",
  99             "-XX:-ClassUnloading",
 100             "-XX:+ClassUnloadingWithConcurrentMark");
 101     }
 102 
 103 }