| /* |
| * Copyright (c) 2013, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 jdk.test.lib.jfr; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * Custom class loader which will try to load the class via getResourceAsStream(). |
| * If there are any errors, the parent class loader will be used instead. |
| */ |
| public class TestClassLoader extends ClassLoader { |
| static public final String CLASS_LOADER_NAME = "JFR TestClassLoader"; |
| |
| public TestClassLoader() { |
| super(CLASS_LOADER_NAME, ClassLoader.getSystemClassLoader()); |
| } |
| |
| public Class<?> loadClass(String name) throws ClassNotFoundException { |
| |
| InputStream is = null; |
| DataInputStream dis = null; |
| try { |
| String resourceName = name.replace('.', '/') + ".class"; |
| is = getResourceAsStream(resourceName); |
| if (is != null) { |
| int i = is.available(); |
| byte buf[] = new byte[i]; |
| dis = new DataInputStream(is); |
| dis.readFully(buf); |
| dis.close(); |
| return defineClass(name, buf, 0, buf.length); |
| } |
| } catch (SecurityException e) { |
| // This error will happen quite often (for example when loading |
| // "java.lang..."). |
| // Ignore this error and use parent class loader. |
| } catch (IOException e) { |
| // Unexpected error. Use parent class loader. |
| e.printStackTrace(); |
| } finally { |
| if (dis != null) { |
| try { |
| dis.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| return super.loadClass(name); |
| } |
| |
| } |