jdk8-mips64-public/hotspot: test/gc/class_unloading/TestClassUnloadingDisabled.java@6a4a6c499e89 (annotated)

test/gc/class_unloading/TestClassUnloadingDisabled.java@6a4a6c499e89 (annotated)

test/gc/class_unloading/TestClassUnloadingDisabled.java

Fri, 20 Jul 2018 03:07:49 -0400

author: fmatte
date: Fri, 20 Jul 2018 03:07:49 -0400
changeset 9358: 6a4a6c499e89
permissions: -rw-r--r--

8114823: G1 doesn't honor request to disable class unloading
Reviewed-by: tschatzl

 /*
  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /*
  * @test
  * @key gc
  * @bug 8114823
  * @requires vm.gc == null
  * @requires vm.opt.ExplicitGCInvokesConcurrent != true
  * @requires vm.opt.ClassUnloading != true
  * @library  /testlibrary /testlibrary/whitebox
  * @build sun.hotspot.WhiteBox
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  *
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  *                   -XX:-ClassUnloading -XX:+UseG1GC TestClassUnloadingDisabled
  *
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  *                   -XX:-ClassUnloading -XX:+UseSerialGC TestClassUnloadingDisabled
  *
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  *                   -XX:-ClassUnloading -XX:+UseParallelGC TestClassUnloadingDisabled
  *
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  *                   -XX:-ClassUnloading -XX:+UseConcMarkSweepGC TestClassUnloadingDisabled
  */
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import sun.hotspot.WhiteBox;
 import com.oracle.java.testlibrary.Asserts;
 public class TestClassUnloadingDisabled {
     public static void main(String args[]) throws Exception {
         final WhiteBox wb = WhiteBox.getWhiteBox();
         // Fetch the dir where the test class and the class
         // to be loaded resides.
         String classDir = TestClassUnloadingDisabled.class.getProtectionDomain().getCodeSource().getLocation().getPath();
         String className = "ClassToLoadUnload";
         Asserts.assertFalse(wb.isClassAlive(className), "Should not be loaded yet");
         // The NoPDClassLoader handles loading classes in the test directory
         // and loads them without a protection domain, which in some cases
         // keeps the class live regardless of marking state.
         NoPDClassLoader nopd = new NoPDClassLoader(classDir);
         nopd.loadClass(className);
         Asserts.assertTrue(wb.isClassAlive(className), "Class should be loaded");
         // Clear the class-loader, class and object references to make
         // class unloading possible.
         nopd = null;
         System.gc();
         Asserts.assertTrue(wb.isClassAlive(className), "Class should not have ben unloaded");
     }
 }
 class NoPDClassLoader extends ClassLoader {
     String path;
     NoPDClassLoader(String path) {
         this.path = path;
     }
     public Class<?> loadClass(String name) throws ClassNotFoundException {
         byte[] cls = null;
         File f = new File(path,name + ".class");
         // Delegate class loading if class not present in the given
         // directory.
         if (!f.exists()) {
             return super.loadClass(name);
         }
         try {
             Path path = Paths.get(f.getAbsolutePath());
             cls = Files.readAllBytes(path);
         } catch (IOException e) {
             throw new ClassNotFoundException(name);
         }
         // Define class with no protection domain and resolve it.
         return defineClass(name, cls, 0, cls.length, null);
     }
 }
 class ClassToLoadUnload {
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/class_unloading/TestClassUnloadingDisabled.java@6a4a6c499e89 (annotated)

test/gc/class_unloading/TestClassUnloadingDisabled.java