1 /* 2 * Copyright (c) 2017, 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 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -XX:+ValueArrayFlatten MVTAccessCheck 29 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -XX:-ValueArrayFlatten MVTAccessCheck 30 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -Dvalhalla.enableValueLambdaForms=true MVTAccessCheck 31 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -Dvalhalla.enableValueLambdaForms=true -Dvalhalla.enablePoolPatches=true MVTAccessCheck 32 */ 33 34 import jdk.experimental.value.ValueType; 35 36 import java.lang.invoke.MethodHandle; 37 import java.lang.invoke.MethodHandles; 38 39 public class MVTAccessCheck { 40 41 public static void main(String[] args) throws Throwable { 42 MethodHandles.Lookup lookup = MethodHandles.lookup(); 43 Class<?> VCC = PrivatePoint.class; 44 ValueType<?> VT = ValueType.forClass(VCC); 45 String[] fieldNames = {"x", "y", "z"}; 46 Class<?>[] fieldTypes = {int.class, short.class, short.class}; 47 48 for (int i = 0; i < fieldNames.length; i++) { 49 final int offset = i; 50 assertThrow(() -> VT.findGetter(lookup, fieldNames[offset], fieldTypes[offset]),IllegalAccessException.class); 51 } 52 53 for (int i = 0; i < fieldNames.length; i++) { 54 final int offset = i; 55 assertThrow(() -> VT.findWither(lookup, fieldNames[offset], fieldTypes[offset]), IllegalAccessException.class); 56 } 57 58 PrivatePoint[] pts = {new PrivatePoint(1, (short) 6, (short) 3), new PrivatePoint(1, (short) 2, (short) 3)}; 59 60 MethodHandle substTest = VT.substitutabilityTest(); 61 for (PrivatePoint p1 : pts) { 62 for (PrivatePoint p2 : pts) { 63 boolean b1 = (boolean) substTest.invoke(p1, p2); 64 boolean b2 = p1.equals(p2); 65 assertTrue(b1 == b2); 66 } 67 } 68 69 MethodHandle hash = VT.substitutabilityHashCode(); 70 for (PrivatePoint p1 : pts) { 71 for (PrivatePoint p2 : pts) { 72 boolean vHashEq = (int) hash.invoke(p1) == (int) hash.invoke(p2); 73 boolean rHashEq = p1.hashCode() == p2.hashCode(); 74 assertTrue(vHashEq == rHashEq); 75 } 76 } 77 } 78 79 static int assertCount = 0; 80 81 interface MHAction { 82 void run() throws Throwable; 83 } 84 85 static void assertThrow(MHAction action, Class<? extends Throwable> ex) { 86 try { 87 action.run(); 88 assertTrue(false); 89 } catch (Throwable t) { 90 assertTrue(ex.isAssignableFrom(t.getClass())); 91 } 92 } 93 94 static void assertTrue(boolean cond) { 95 assertCount++; 96 if (!cond) { 97 throw new AssertionError(); 98 } 99 } 100 }