Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/gc/class_unloading/TestClassUnloadingDisabled.java
test/gc/class_unloading/TestClassUnloadingDisabled.java
- changeset 9358
- 6a4a6c499e89
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| 9357:0ef29304c2b4 | 9358:6a4a6c499e89 |
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| 1 /* | |
| 2 * Copyright (c) 2018, 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 * @key gc | |
| 27 * @bug 8114823 | |
| 28 * @requires vm.gc == null | |
| 29 * @requires vm.opt.ExplicitGCInvokesConcurrent != true | |
| 30 * @requires vm.opt.ClassUnloading != true | |
| 31 * @library /testlibrary /testlibrary/whitebox | |
| 32 * @build sun.hotspot.WhiteBox | |
| 33 * @run main ClassFileInstaller sun.hotspot.WhiteBox | |
| 34 * sun.hotspot.WhiteBox$WhiteBoxPermission | |
| 35 * | |
| 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI | |
| 37 * -XX:-ClassUnloading -XX:+UseG1GC TestClassUnloadingDisabled | |
| 38 * | |
| 39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI | |
| 40 * -XX:-ClassUnloading -XX:+UseSerialGC TestClassUnloadingDisabled | |
| 41 * | |
| 42 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI | |
| 43 * -XX:-ClassUnloading -XX:+UseParallelGC TestClassUnloadingDisabled | |
| 44 * | |
| 45 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI | |
| 46 * -XX:-ClassUnloading -XX:+UseConcMarkSweepGC TestClassUnloadingDisabled | |
| 47 */ | |
| 48 | |
| 49 import java.io.File; | |
| 50 import java.io.IOException; | |
| 51 import java.nio.file.Files; | |
| 52 import java.nio.file.Path; | |
| 53 import java.nio.file.Paths; | |
| 54 | |
| 55 import sun.hotspot.WhiteBox; | |
| 56 | |
| 57 import com.oracle.java.testlibrary.Asserts; | |
| 58 | |
| 59 public class TestClassUnloadingDisabled { | |
| 60 public static void main(String args[]) throws Exception { | |
| 61 final WhiteBox wb = WhiteBox.getWhiteBox(); | |
| 62 // Fetch the dir where the test class and the class | |
| 63 // to be loaded resides. | |
| 64 String classDir = TestClassUnloadingDisabled.class.getProtectionDomain().getCodeSource().getLocation().getPath(); | |
| 65 String className = "ClassToLoadUnload"; | |
| 66 | |
| 67 Asserts.assertFalse(wb.isClassAlive(className), "Should not be loaded yet"); | |
| 68 | |
| 69 // The NoPDClassLoader handles loading classes in the test directory | |
| 70 // and loads them without a protection domain, which in some cases | |
| 71 // keeps the class live regardless of marking state. | |
| 72 NoPDClassLoader nopd = new NoPDClassLoader(classDir); | |
| 73 nopd.loadClass(className); | |
| 74 | |
| 75 Asserts.assertTrue(wb.isClassAlive(className), "Class should be loaded"); | |
| 76 | |
| 77 // Clear the class-loader, class and object references to make | |
| 78 // class unloading possible. | |
| 79 nopd = null; | |
| 80 | |
| 81 System.gc(); | |
| 82 Asserts.assertTrue(wb.isClassAlive(className), "Class should not have ben unloaded"); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 class NoPDClassLoader extends ClassLoader { | |
| 87 String path; | |
| 88 | |
| 89 NoPDClassLoader(String path) { | |
| 90 this.path = path; | |
| 91 } | |
| 92 | |
| 93 public Class<?> loadClass(String name) throws ClassNotFoundException { | |
| 94 byte[] cls = null; | |
| 95 File f = new File(path,name + ".class"); | |
| 96 | |
| 97 // Delegate class loading if class not present in the given | |
| 98 // directory. | |
| 99 if (!f.exists()) { | |
| 100 return super.loadClass(name); | |
| 101 } | |
| 102 | |
| 103 try { | |
| 104 Path path = Paths.get(f.getAbsolutePath()); | |
| 105 cls = Files.readAllBytes(path); | |
| 106 } catch (IOException e) { | |
| 107 throw new ClassNotFoundException(name); | |
| 108 } | |
| 109 | |
| 110 // Define class with no protection domain and resolve it. | |
| 111 return defineClass(name, cls, 0, cls.length, null); | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 class ClassToLoadUnload { | |
| 116 } |
