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 /test/lib
  29  * @run driver TestClassUnloadingArguments
  30  */
  31 
  32 import java.util.*;
  33 
  34 import jdk.test.lib.Asserts;
  35 import jdk.test.lib.process.ProcessTools;
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 
  38 public class TestClassUnloadingArguments {
  39 
  40     public static void testWith(String msg, boolean cu, boolean cuConc, String... args) throws Exception {
  41         String[] cmds = Arrays.copyOf(args, args.length + 2);
  42         cmds[args.length] = "-XX:+PrintFlagsFinal";
  43         cmds[args.length + 1] = "-version";
  44         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
  45         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  46         output.shouldHaveExitValue(0);
  47         output.shouldContain("ClassUnloading");
  48         output.shouldContain("ClassUnloadingWithConcurrentMark");
  49 
  50         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloading.+?= (.+?) (.+?)", 2),
  51                          Boolean.toString(cu),
  52                          msg + ", but got wrong ClassUnloading");
  53         Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloadingWithConcurrentMark.+?= (.+?) (.+?)", 2),
  54                          Boolean.toString(cuConc),
  55                          msg + ", but got wrong ClassUnloadingWithConcurrentMark");
  56     }
  57 
  58     public static void main(String[] args) throws Exception {
  59         testDefaultGC();
  60         testShenandoah();
  61     }
  62 
  63     public static void testDefaultGC() throws Exception {
  64         testWith("Default GC should have class unloading enabled",
  65             true, true);
  66 
  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         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:+UnlockExperimentalVMOptions",
  85             "-XX:+UseShenandoahGC");
  86 
  87         testWith("Shenandoah GC should disable everything",
  88             false, false,
  89             "-XX:+UnlockExperimentalVMOptions",
  90             "-XX:+UseShenandoahGC",
  91             "-XX:-ClassUnloading");
  92 
  93         testWith("Shenandoah GC should enable conc unload",
  94             true, true,
  95             "-XX:+UnlockExperimentalVMOptions",
  96             "-XX:+UseShenandoahGC",
  97             "-XX:+ClassUnloadingWithConcurrentMark");
  98 
  99         testWith("Shenandoah GC should not let conc unload to be enabled separately",
 100             false, false,
 101             "-XX:+UnlockExperimentalVMOptions",
 102             "-XX:+UseShenandoahGC",
 103             "-XX:-ClassUnloading",
 104             "-XX:+ClassUnloadingWithConcurrentMark");
 105     }
 106 
 107 }