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 package org.graalvm.compiler.core.test; 26 27 import java.lang.invoke.MethodHandles; 28 import java.lang.reflect.Method; 29 import java.security.ProtectionDomain; 30 31 import org.graalvm.compiler.serviceprovider.JavaVersionUtil; 32 import org.objectweb.asm.Opcodes; 33 34 import sun.misc.Unsafe; 35 36 public abstract class CustomizedBytecodePatternTest extends GraalCompilerTest implements Opcodes { 37 38 protected Class<?> getClass(String className) throws ClassNotFoundException { 39 return new CachedLoader(CustomizedBytecodePatternTest.class.getClassLoader(), className).findClass(className); 40 } 41 42 /** 43 * @param className 44 * @param lookUp lookup object with boot class load capability (required for jdk 9 and above) 45 * @return loaded class 46 * @throws ClassNotFoundException 47 */ 48 protected Class<?> getClassBL(String className, MethodHandles.Lookup lookUp) throws ClassNotFoundException { 49 byte[] gen = generateClass(className.replace('.', '/')); 50 Method defineClass = null; 51 Class<?> loadedClass = null; 52 try { 53 if (JavaVersionUtil.JAVA_SPEC <= 8) { 54 defineClass = Unsafe.class.getDeclaredMethod("defineClass", String.class, byte[].class, int.class, int.class, ClassLoader.class, ProtectionDomain.class); 55 loadedClass = (Class<?>) defineClass.invoke(UNSAFE, className, gen, 0, gen.length, null, null); 56 } else { 57 defineClass = MethodHandles.lookup().getClass().getDeclaredMethod("defineClass", byte[].class); 58 loadedClass = (Class<?>) defineClass.invoke(lookUp, gen); 59 } 60 } catch (Exception e) { 61 throw new ClassNotFoundException(); 62 } 63 return loadedClass; 64 } 65 66 private class CachedLoader extends ClassLoader { 67 68 final String className; 69 Class<?> loaded; 70 71 CachedLoader(ClassLoader parent, String className) { 72 super(parent); 73 this.className = className; 74 } 75 76 @Override 77 protected Class<?> findClass(String name) throws ClassNotFoundException { 78 if (name.equals(className)) { 79 if (loaded == null) { 80 byte[] gen = generateClass(name.replace('.', '/')); 81 loaded = defineClass(name, gen, 0, gen.length); 82 } 83 return loaded; 84 } else { 85 return super.findClass(name); 86 } 87 } 88 89 } 90 91 protected abstract byte[] generateClass(String internalClassName); 92 93 }