1 /* 2 * Copyright (c) 2016, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * @test 28 * @bug 8153540 29 * @modules java.base/jdk.internal.misc 30 * 31 * @run main/bootclasspath -Xbatch -XX:CompileCommand=dontinline,*AllocateInstance.test* 32 * compiler.unsafe.AllocateInstance 33 */ 34 package compiler.unsafe; 35 36 import jdk.internal.misc.Unsafe; 37 import java.util.concurrent.Callable; 38 39 public class AllocateInstance { 40 static final Unsafe U = Unsafe.getUnsafe(); 41 42 static class T {} 43 static final Class<?> T_CLASS; 44 static { 45 try { 46 T_CLASS = Class.forName(T.class.getName(), false, ClassLoader.getSystemClassLoader()); 47 } catch (ClassNotFoundException e) { 48 throw new Error(e); 49 } 50 } 51 52 static abstract class A {} 53 54 static Object testNull() throws InstantiationException { 55 return U.allocateInstance(null); 56 } 57 static Object testPrim() throws InstantiationException { 58 return U.allocateInstance(int.class); 59 } 60 static Object testPrimArray() throws InstantiationException { 61 return U.allocateInstance(int[].class); 62 } 63 static Object testObjArray() throws InstantiationException { 64 return U.allocateInstance(Object[].class); 65 } 66 static Object testIntf() throws InstantiationException { 67 return U.allocateInstance(Runnable.class); 68 } 69 static Object testAbstract() throws InstantiationException { 70 return U.allocateInstance(A.class); 71 } 72 static Object testObject() throws InstantiationException { 73 return U.allocateInstance(Object.class); 74 } 75 static Object testObjectInit() throws InstantiationException { 76 return U.allocateInstance(T_CLASS); 77 } 78 static Object testReflective(Class<?> c) throws InstantiationException { 79 return U.allocateInstance(c); 80 } 81 82 static void run(String name, Callable<Object> c, boolean shouldSucceed, boolean verbose) { 83 if (verbose) System.out.print(name); 84 run(c, shouldSucceed, verbose); 85 } 86 87 static void run(Class<?> c, boolean shouldSucceed, boolean verbose) { 88 if (verbose) System.out.print(c != null ? c.getName() : "null"); 89 run(() -> testReflective(c), shouldSucceed, verbose); 90 } 91 92 static void run(Callable<Object> c, boolean shouldSucceed, boolean verbose) { 93 try { 94 Object o = c.call(); 95 if (o == null) { 96 System.out.println(" => null"); 97 } else { 98 if (verbose) System.out.println(" => allocated"); 99 } 100 if (!shouldSucceed) { 101 throw new AssertionError("allocation should fail"); 102 } 103 } catch (Exception e) { 104 if (verbose) { 105 System.out.println(" => exception " + e.getClass().getName() + ": " + e.getMessage()); 106 } 107 if (shouldSucceed) { 108 throw new AssertionError("allocation should succeed"); 109 } 110 } 111 } 112 113 static void runTests(boolean verbose) { 114 run("null", AllocateInstance::testNull, false, verbose); 115 run("int", AllocateInstance::testPrim, false, verbose); 116 run("int[]", AllocateInstance::testPrimArray, false, verbose); 117 run("Object[]", AllocateInstance::testObjArray, false, verbose); 118 run("interface", AllocateInstance::testIntf, false, verbose); 119 run("abstract", AllocateInstance::testAbstract, false, verbose); 120 run("Object", AllocateInstance::testObject, true, verbose); 121 run("ObjectInit", AllocateInstance::testObjectInit, true, verbose); 122 123 run((Class<?>)null, false, verbose); 124 run(Object.class, true, verbose); 125 run(A.class, false, verbose); 126 run(Runnable.class, false, verbose); 127 run(Object[].class, false, verbose); 128 run(int.class, false, verbose); 129 run(int[].class, false, verbose); 130 } 131 132 static void warmup() { 133 for (int i = 0; i < 20_000; i ++) { 134 runTests(false); 135 } 136 } 137 public static void main(String[] args) { 138 runTests(true); 139 warmup(); 140 runTests(true); 141 System.out.println("TEST PASSED"); 142 } 143 }