/* * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package org.graalvm.compiler.hotspot.test; import static java.lang.reflect.Modifier.FINAL; import static java.lang.reflect.Modifier.PRIVATE; import static java.lang.reflect.Modifier.PROTECTED; import static java.lang.reflect.Modifier.PUBLIC; import static java.lang.reflect.Modifier.STATIC; import static java.lang.reflect.Modifier.TRANSIENT; import static java.lang.reflect.Modifier.VOLATILE; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import org.junit.Assert; import org.junit.Test; import org.graalvm.compiler.core.common.util.Util; import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; import jdk.vm.ci.hotspot.HotSpotResolvedJavaField; import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; import jdk.vm.ci.meta.JavaType; import jdk.vm.ci.meta.ResolvedJavaField; /** * Tests {@link HotSpotResolvedJavaField} functionality. */ public class HotSpotResolvedJavaFieldTest extends HotSpotGraalCompilerTest { private static final Class<?>[] classesWithInternalFields = {Class.class, ClassLoader.class}; private static final Method createFieldMethod; private static final Field indexField; static { Method m = null; Field f = null; try { Class<?> typeImpl = Class.forName("jdk.vm.ci.hotspot.HotSpotResolvedObjectTypeImpl"); m = typeImpl.getDeclaredMethod("createField", JavaType.class, long.class, int.class, int.class); Util.setAccessible(m, true); Class<?> fieldImpl = Class.forName("jdk.vm.ci.hotspot.HotSpotResolvedJavaFieldImpl"); f = fieldImpl.getDeclaredField("index"); Util.setAccessible(f, true); } catch (Exception e) { throw new AssertionError(e); } createFieldMethod = m; indexField = f; } /** * Same as {@code HotSpotModifiers.jvmFieldModifiers()} but works when using a JVMCI version * prior to the introduction of that method. */ private int jvmFieldModifiers() { GraalHotSpotVMConfig config = runtime().getVMConfig(); int accEnum = config.getConstant("JVM_ACC_ENUM", Integer.class, 0x4000); int accSynthetic = config.getConstant("JVM_ACC_SYNTHETIC", Integer.class, 0x1000); return PUBLIC | PRIVATE | PROTECTED | STATIC | FINAL | VOLATILE | TRANSIENT | accEnum | accSynthetic; } /** * Tests that {@link HotSpotResolvedJavaField#getModifiers()} only includes the modifiers * returned by {@link Field#getModifiers()}. Namely, it must not include * {@code HotSpotResolvedJavaField#FIELD_INTERNAL_FLAG}. */ @Test public void testModifiersForInternal() { for (Class<?> c : classesWithInternalFields) { HotSpotResolvedObjectType type = HotSpotResolvedObjectType.fromObjectClass(c); for (ResolvedJavaField field : type.getInstanceFields(false)) { if (field.isInternal()) { Assert.assertEquals(0, ~jvmFieldModifiers() & field.getModifiers()); } } } } /** * Tests that {@code HotSpotResolvedObjectType#createField(String, JavaType, long, int)} always * returns an {@linkplain ResolvedJavaField#equals(Object) equivalent} object for an internal * field. * * @throws InvocationTargetException * @throws IllegalArgumentException * @throws IllegalAccessException */ @Test public void testEquivalenceForInternalFields() throws IllegalAccessException, IllegalArgumentException, InvocationTargetException { for (Class<?> c : classesWithInternalFields) { HotSpotResolvedObjectType type = HotSpotResolvedObjectType.fromObjectClass(c); for (ResolvedJavaField field : type.getInstanceFields(false)) { if (field.isInternal()) { HotSpotResolvedJavaField expected = (HotSpotResolvedJavaField) field; int index = indexField.getInt(expected); ResolvedJavaField actual = (ResolvedJavaField) createFieldMethod.invoke(type, expected.getType(), expected.offset(), expected.getModifiers(), index); Assert.assertEquals(expected, actual); } } } } @Test public void testIsInObject() { for (Field f : String.class.getDeclaredFields()) { HotSpotResolvedJavaField rf = (HotSpotResolvedJavaField) getMetaAccess().lookupJavaField(f); Assert.assertEquals(rf.toString(), rf.isInObject("a string"), !rf.isStatic()); } } }