| /* |
| * Copyright (c) 2010, 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. |
| */ |
| |
| package nsk.sysdict.share; |
| |
| import java.io.File; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Random; |
| import nsk.share.ClassUnloader; |
| import nsk.share.TestFailure; |
| import nsk.share.gc.ThreadedGCTest; |
| import nsk.share.gc.gp.GarbageUtils; |
| import nsk.share.test.ExecutionController; |
| |
| /** |
| * This is the base class for btree & chain tests. It is a standard GCThreaded Test. |
| */ |
| public abstract class SysDictTest extends ThreadedGCTest { |
| |
| static String PACKAGE_PREFIX = "nsk.sysdict.share."; |
| // Should we additionally use ClassUnloader.unload to stress GC |
| private boolean isHeapStressed = false; |
| // Should we use one JarLoader or a lot of them |
| private boolean useSingleLoader = true; |
| // Should we use fats.jar with little amount large classes or not |
| boolean useFats = false; |
| URL[] jars; |
| |
| protected void parseArgs(String args[]) { |
| for (int i = 0; i < args.length; i++) { |
| if (args[i].equals("-stressHeap")) { |
| isHeapStressed = true; |
| } |
| if (args[i].equals("-useFatClass")) { |
| useFats = true; |
| } |
| if (args[i].equals("-useSingleLoader")) { |
| this.useSingleLoader = false; |
| } |
| // jar path is in useal classpath format |
| if (args[i].equals("-jarpath")) { |
| String[] files = args[i + 1].split(File.pathSeparator); |
| jars = new URL[files.length]; |
| for (int j = 0; j < files.length; j++) { |
| try { |
| jars[j] = new File(files[j]).toURI().toURL(); |
| } catch (MalformedURLException e) { |
| throw new TestFailure(e); |
| } |
| } |
| } |
| } |
| } |
| |
| // each time we create a new classloader |
| protected ClassLoader createJarLoader() { |
| return new URLClassLoader(jars); |
| } |
| |
| // The btree and chain tests differs by loaders and classes |
| // let define them in subclasses |
| abstract ClassLoader[] createLoaders(); |
| |
| abstract String[] getClassNames(); |
| |
| ClassLoader[] createClassLoadersInternal() { |
| if (!useSingleLoader) { |
| return createLoaders(); |
| } else { |
| ClassLoader[] single = new ClassLoader[1]; |
| single[0] = createJarLoader(); |
| return single; |
| } |
| } |
| volatile ClassLoader[] currentClassLoaders; |
| |
| class Worker implements Runnable { |
| |
| private ClassLoader loader; |
| private String[] names; |
| private ExecutionController stresser; |
| int index; |
| public String tmp; |
| |
| public Worker(int number, String[] classnames) { |
| |
| this.index = number; |
| this.names = new String[classnames.length]; |
| List<String> listNames = new ArrayList<String>(classnames.length); |
| listNames.addAll(Arrays.asList(classnames)); |
| for (int i = 0; i < classnames.length; i++) { |
| int idx1 = new Random().nextInt(listNames.size()); |
| this.names[i] = listNames.remove(idx1); |
| } |
| } |
| |
| @Override |
| public void run() { |
| if (stresser == null) { |
| stresser = getExecutionController(); |
| } |
| |
| // only first thread update all classloaders |
| // do not care about synchronization |
| if (index == 0) { |
| try { |
| currentClassLoaders = createClassLoadersInternal(); |
| } catch (OutOfMemoryError oome) { |
| // skip iterations until all loaders will be unloaded |
| Thread.yield(); |
| return; |
| } |
| } |
| for (int i = 0; i < names.length; i++) { |
| try { |
| String name = names[i]; |
| if (!stresser.continueExecution()) { |
| return; |
| } |
| // just check if loader was updated |
| loader = currentClassLoaders[index]; |
| Class clz = Class.forName(name, true, loader); |
| // set name into public variable just to be sure |
| // that class is loaded |
| tmp = clz.getName(); |
| } catch (ClassNotFoundException cnfe) { |
| throw new TestFailure(cnfe); |
| } catch (OutOfMemoryError oome) { |
| // just ignore |
| // we do not check memory leaks in PermGen in this tests |
| } catch (StackOverflowError soe) { |
| // just ignore, chains could be too large |
| // StackOverflowError could be in some sparcs |
| } |
| } |
| if (isHeapStressed) { |
| GarbageUtils.eatMemory(stresser, 50, 1024, 0); |
| } |
| } |
| } |
| |
| @Override |
| protected Runnable createRunnable(int i) { |
| currentClassLoaders = createClassLoadersInternal(); |
| return new Worker(i % currentClassLoaders.length, getClassNames()); |
| } |
| } |