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 testng/othervm -XX:+EnableMVT -XX:+ValueArrayFlatten MVTAccessCheck 27 * @run testng/othervm -XX:+EnableMVT -XX:-ValueArrayFlatten MVTAccessCheck 28 * @run testng/othervm -XX:+EnableMVT -Dvalhalla.enableValueLambdaForms=true MVTAccessCheck 29 * @run testng/othervm -XX:+EnableMVT -Dvalhalla.enableValueLambdaForms=true -Dvalhalla.enablePoolPatches=true MVTAccessCheck 30 */ 31 32 import jdk.experimental.value.ValueType; 33 import org.testng.Assert; 34 import org.testng.annotations.Test; 35 36 import java.lang.invoke.MethodHandle; 37 import java.lang.invoke.MethodHandles; 38 39 import static org.testng.Assert.assertEquals; 40 import static org.testng.Assert.assertTrue; 41 42 @Test 43 public class MVTAccessCheck { 44 45 static final ValueType<?> VT_Point = ValueType.forClass(Point.class); 46 static final ValueType<?> VT_PrivatePoint = ValueType.forClass(PrivatePoint.class); 47 48 static final String[] FIELD_NAMES = {"x", "y", "z"}; 49 static final Class<?>[] FIELD_TYPES = {int.class, short.class, short.class}; 50 51 public void testGetter() throws Throwable { 52 for (int i = 0; i < FIELD_NAMES.length; i++) { 53 final int offset = i; 54 assertThrow(() -> VT_PrivatePoint.findGetter( 55 MethodHandles.lookup(), FIELD_NAMES[offset], FIELD_TYPES[offset]), IllegalAccessException.class); 56 } 57 } 58 59 public void testWither() throws Throwable { 60 testWither(VT_Point); 61 testWither(VT_PrivatePoint); 62 } 63 64 void testWither(ValueType<?> vt) throws Throwable { 65 for (int i = 0; i < FIELD_NAMES.length; i++) { 66 final int offset = i; 67 assertThrow(() -> vt.findWither( 68 MethodHandles.lookup(), FIELD_NAMES[offset], FIELD_TYPES[offset]), IllegalAccessException.class); 69 } 70 } 71 72 public void testSubstitutability() throws Throwable { 73 PrivatePoint[] pts = {new PrivatePoint(1, (short) 6, (short) 3), new PrivatePoint(1, (short) 2, (short) 3)}; 74 75 MethodHandle substTest = VT_PrivatePoint.substitutabilityTest(); 76 for (PrivatePoint p1 : pts) { 77 for (PrivatePoint p2 : pts) { 78 boolean b1 = (boolean) substTest.invoke(p1, p2); 79 boolean b2 = p1.equals(p2); 80 assertEquals(b1, b2); 81 } 82 } 83 84 MethodHandle hash = VT_PrivatePoint.substitutabilityHashCode(); 85 for (PrivatePoint p1 : pts) { 86 for (PrivatePoint p2 : pts) { 87 boolean vHashEq = (int) hash.invoke(p1) == (int) hash.invoke(p2); 88 boolean rHashEq = p1.hashCode() == p2.hashCode(); 89 assertEquals(vHashEq, rHashEq); 90 } 91 } 92 } 93 94 interface MHAction { 95 void run() throws Throwable; 96 } 97 98 static void assertThrow(MHAction action, Class<? extends Throwable> ex) { 99 try { 100 action.run(); 101 Assert.fail(); 102 } catch (Throwable t) { 103 assertTrue(ex.isAssignableFrom(t.getClass())); 104 } 105 } 106 }