1 /*
   2  * Copyright (c) 2018, 2020, Oracle and/or its affiliates. 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
  26  * @summary Verifies the creation and cleaup of entries in the Protection Domain Table
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  * @build sun.hotspot.WhiteBox
  30  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  31  * @run main CleanProtectionDomain
  32  */
  33 
  34 import java.security.ProtectionDomain;
  35 import jdk.test.lib.compiler.InMemoryJavaCompiler;
  36 import jdk.internal.misc.Unsafe;
  37 import static jdk.test.lib.Asserts.*;
  38 import jdk.test.lib.process.OutputAnalyzer;
  39 import jdk.test.lib.process.ProcessTools;
  40 import sun.hotspot.WhiteBox;
  41 
  42 public class CleanProtectionDomain {
  43 
  44   public static void main(String args[]) throws Exception {
  45     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  46                                   "-Xlog:protectiondomain+table=debug",
  47                                   "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",
  48                                   "-XX:+UnlockDiagnosticVMOptions",
  49                                   "-XX:+WhiteBoxAPI",
  50                                   "-Xbootclasspath/a:.",
  51                                   Test.class.getName());
  52     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  53     output.shouldContain("protection domain added");
  54     output.shouldContain("protection domain unlinked");
  55     output.shouldHaveExitValue(0);
  56   }
  57 
  58   static class Test {
  59     public static void test() throws Exception {
  60       TestClassLoader classloader = new TestClassLoader();
  61       ProtectionDomain pd = new ProtectionDomain(null, null);
  62       byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", "class TestClass { }");
  63       Class<?> klass = classloader.defineClass("TestClass", klassbuf, pd);
  64     }
  65 
  66     public static void main(String[] args) throws Exception {
  67       WhiteBox wb = WhiteBox.getWhiteBox();
  68       int removedCountOrig =  wb.protectionDomainRemovedCount();
  69       int removedCount;
  70 
  71       test();
  72 
  73       // Wait until ServiceThread cleans ProtectionDomain table.
  74       // When the TestClassLoader is unloaded by GC, at least one
  75       // ProtectionDomainCacheEntry will be eligible for removal.
  76       int cnt = 0;
  77       while (true) {
  78         if (cnt++ % 30 == 0) {
  79           System.gc();
  80         }
  81         removedCount = wb.protectionDomainRemovedCount();
  82         if (removedCountOrig != removedCount) {
  83           break;
  84         }
  85         Thread.sleep(100);
  86       }
  87     }
  88 
  89     private static class TestClassLoader extends ClassLoader {
  90       public TestClassLoader() {
  91         super();
  92       }
  93 
  94       public Class<?> defineClass(String name, byte[] bytes, ProtectionDomain pd) {
  95         return defineClass(name, bytes, 0, bytes.length, pd);
  96       }
  97     }
  98   }
  99 }