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 }