| /* |
| * Copyright (c) 2016, 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 jdk.vm.ci.hotspot.test; |
| |
| import java.lang.reflect.Field; |
| |
| import org.testng.annotations.DataProvider; |
| |
| import sun.hotspot.WhiteBox; |
| import jdk.internal.misc.Unsafe; |
| import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider; |
| import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider; |
| import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; |
| import jdk.vm.ci.hotspot.HotSpotVMConfigAccess; |
| import jdk.vm.ci.meta.Constant; |
| import jdk.vm.ci.meta.JavaConstant; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.runtime.JVMCI; |
| import java.util.List; |
| import java.util.ArrayList; |
| import java.util.Map; |
| import java.util.HashMap; |
| |
| public class MemoryAccessProviderData { |
| private static final Unsafe UNSAFE = Unsafe.getUnsafe(); |
| private static final HotSpotConstantReflectionProvider CONSTANT_REFLECTION = (HotSpotConstantReflectionProvider) JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection(); |
| private static final TestClass TEST_OBJECT = new TestClass(); |
| private static final JavaConstant TEST_CONSTANT = CONSTANT_REFLECTION.forObject(TEST_OBJECT); |
| private static final JavaConstant TEST_CLASS_CONSTANT = CONSTANT_REFLECTION.forObject(TestClass.class); |
| private static KindData[] PRIMITIVE_KIND_DATA = { |
| new KindData(JavaKind.Boolean, TEST_OBJECT), |
| new KindData(JavaKind.Byte, TEST_OBJECT), |
| new KindData(JavaKind.Char, TEST_OBJECT), |
| new KindData(JavaKind.Short, TEST_OBJECT), |
| new KindData(JavaKind.Int, TEST_OBJECT), |
| new KindData(JavaKind.Float, TEST_OBJECT), |
| new KindData(JavaKind.Long, TEST_OBJECT), |
| new KindData(JavaKind.Double, TEST_OBJECT) |
| }; |
| private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); |
| |
| |
| @DataProvider(name = "positiveObject") |
| public static Object[][] getPositiveObjectJavaKind() { |
| HotSpotJVMCIRuntimeProvider runtime = (HotSpotJVMCIRuntimeProvider) JVMCI.getRuntime(); |
| int offset = new HotSpotVMConfigAccess(runtime.getConfigStore()).getFieldOffset("Klass::_java_mirror", Integer.class, "oop"); |
| Constant wrappedKlassPointer = ((HotSpotResolvedObjectType) runtime.fromClass(TestClass.class)).klass(); |
| return new Object[][]{new Object[]{JavaKind.Object, wrappedKlassPointer, (long) offset, TEST_CLASS_CONSTANT, 0}}; |
| } |
| |
| @DataProvider(name = "positivePrimitive") |
| public static Object[][] getPositivePrimitiveJavaKinds() { |
| List<Object[]> result = new ArrayList<>(); |
| for (KindData k : PRIMITIVE_KIND_DATA) { |
| result.add(new Object[] {k.kind, TEST_CONSTANT, k.instanceFieldOffset, k.instanceFieldValue, Math.max(8, k.kind.getBitCount())}); |
| result.add(new Object[] {k.kind, TEST_CLASS_CONSTANT, k.staticFieldOffset, k.staticFieldValue, Math.max(8, k.kind.getBitCount())}); |
| } |
| return result.toArray(new Object[result.size()][]); |
| } |
| |
| @DataProvider(name = "outOfBoundsInstanceFields") |
| public static Object[][] getOutOfBoundsStaticFieldReads() { |
| long instanceSize = WHITE_BOX.getObjectSize(TEST_OBJECT); |
| List<Object[]> result = new ArrayList<>(); |
| for (KindData k : PRIMITIVE_KIND_DATA) { |
| long lastValidOffset = instanceSize - (k.kind.getByteCount()); |
| result.add(new Object[] {k.kind, TEST_CONSTANT, lastValidOffset, false}); |
| result.add(new Object[] {k.kind, TEST_CONSTANT, (long) -1, true}); |
| result.add(new Object[] {k.kind, TEST_CONSTANT, lastValidOffset + 1, true}); |
| result.add(new Object[] {k.kind, TEST_CONSTANT, lastValidOffset + 100, true}); |
| } |
| return result.toArray(new Object[result.size()][]); |
| } |
| |
| @DataProvider(name = "outOfBoundsStaticFields") |
| public static Object[][] getOutOfBoundsInstanceFieldReads() { |
| long staticsSize = WHITE_BOX.getObjectSize(TEST_OBJECT.getClass()); |
| List<Object[]> result = new ArrayList<>(); |
| for (KindData k : PRIMITIVE_KIND_DATA) { |
| long lastValidOffset = staticsSize - (k.kind.getByteCount()); |
| result.add(new Object[] {k.kind, TEST_CLASS_CONSTANT, lastValidOffset, false}); |
| result.add(new Object[] {k.kind, TEST_CLASS_CONSTANT, (long) -1, true}); |
| result.add(new Object[] {k.kind, TEST_CLASS_CONSTANT, lastValidOffset + 1, true}); |
| result.add(new Object[] {k.kind, TEST_CLASS_CONSTANT, lastValidOffset + 100, true}); |
| } |
| return result.toArray(new Object[result.size()][]); |
| } |
| |
| @DataProvider(name = "negative") |
| public static Object[][] getNegativeJavaKinds() { |
| return new Object[][]{ |
| new Object[]{JavaKind.Void, JavaConstant.NULL_POINTER}, |
| new Object[]{JavaKind.Illegal, JavaConstant.INT_1}}; |
| } |
| |
| |
| private static class TestClass { |
| public final boolean booleanField = true; |
| public final byte byteField = 2; |
| public final short shortField = 3; |
| public final int intField = 4; |
| public final long longField = 5L; |
| public final double doubleField = 6.0d; |
| public final float floatField = 7.0f; |
| public final char charField = 'a'; |
| public final String objectField = "abc"; |
| |
| public static final boolean booleanStaticField = true; |
| public static final byte byteStaticField = 2; |
| public static final short shortStaticField = 3; |
| public static final int intStaticField = 4; |
| public static final long longStaticField = 5L; |
| public static final double doubleStaticField = 6.0d; |
| public static final float floatStaticField = 7.0f; |
| public static final char charStaticField = 'a'; |
| public static final String objectStaticField = "abc"; |
| } |
| |
| |
| static class KindData { |
| final JavaKind kind; |
| final Field instanceField; |
| final Field staticField; |
| final long instanceFieldOffset; |
| final long staticFieldOffset; |
| final JavaConstant instanceFieldValue; |
| final JavaConstant staticFieldValue; |
| KindData(JavaKind kind, Object testObject) { |
| this.kind = kind; |
| try { |
| Class<?> c = testObject.getClass(); |
| instanceField = c.getDeclaredField(kind.getJavaName() + "Field"); |
| staticField = c.getDeclaredField(kind.getJavaName() + "StaticField"); |
| instanceField.setAccessible(true); |
| staticField.setAccessible(true); |
| instanceFieldOffset = UNSAFE.objectFieldOffset(instanceField); |
| staticFieldOffset = UNSAFE.staticFieldOffset(staticField); |
| instanceFieldValue = JavaConstant.forBoxedPrimitive(instanceField.get(testObject)); |
| staticFieldValue = JavaConstant.forBoxedPrimitive(staticField.get(null)); |
| } catch (Exception e) { |
| throw new Error("TESTBUG for kind " + kind, e); |
| } |
| } |
| } |
| } |