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. 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 * @test 26 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -XX:+ValueArrayFlatten MVTAccessCheck 27 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -XX:-ValueArrayFlatten MVTAccessCheck 28 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -Dvalhalla.enableValueLambdaForms=true MVTAccessCheck 29 * @run main/othervm -Xint -Xverify:none -XX:+EnableMVT -Dvalhalla.enableValueLambdaForms=true -Dvalhalla.enablePoolPatches=true MVTAccessCheck 30 */ 31 32 import jdk.experimental.value.ValueType; 33 34 import java.lang.invoke.MethodHandle; 35 import java.lang.invoke.MethodHandles; 36 37 public class MVTAccessCheck { 38 39 public static void main(String[] args) throws Throwable { 40 MethodHandles.Lookup lookup = MethodHandles.lookup(); 41 Class<?> VCC = PrivatePoint.class; 42 ValueType<?> VT = ValueType.forClass(VCC); 43 String[] fieldNames = {"x", "y", "z"}; 44 Class<?>[] fieldTypes = {int.class, short.class, short.class}; 45 46 for (int i = 0; i < fieldNames.length; i++) { 47 final int offset = i; 48 assertThrow(() -> VT.findGetter(lookup, fieldNames[offset], fieldTypes[offset]),IllegalAccessException.class); 49 } 50 51 for (int i = 0; i < fieldNames.length; i++) { 52 final int offset = i; 53 assertThrow(() -> VT.findWither(lookup, fieldNames[offset], fieldTypes[offset]), IllegalAccessException.class); 54 } 55 56 PrivatePoint[] pts = {new PrivatePoint(1, (short) 6, (short) 3), new PrivatePoint(1, (short) 2, (short) 3)}; 57 58 MethodHandle substTest = VT.substitutabilityTest(); 59 for (PrivatePoint p1 : pts) { 60 for (PrivatePoint p2 : pts) { 61 boolean b1 = (boolean) substTest.invoke(p1, p2); 62 boolean b2 = p1.equals(p2); 63 assertTrue(b1 == b2); 64 } 65 } 66 67 MethodHandle hash = VT.substitutabilityHashCode(); 68 for (PrivatePoint p1 : pts) { 69 for (PrivatePoint p2 : pts) { 70 boolean vHashEq = (int) hash.invoke(p1) == (int) hash.invoke(p2); 71 boolean rHashEq = p1.hashCode() == p2.hashCode(); 72 assertTrue(vHashEq == rHashEq); 73 } 74 } 75 } 76 77 static int assertCount = 0; 78 79 interface MHAction { 80 void run() throws Throwable; 81 } 82 83 static void assertThrow(MHAction action, Class<? extends Throwable> ex) { 84 try { 85 action.run(); 86 assertTrue(false); 87 } catch (Throwable t) { 88 assertTrue(ex.isAssignableFrom(t.getClass())); 89 } 90 } 91 92 static void assertTrue(boolean cond) { 93 assertCount++; 94 if (!cond) { 95 throw new AssertionError(); 96 } 97 } 98 }