# HG changeset patch # User Christian Haeubl # Date 1341329351 -7200 # Node ID 63f0719bde9a78af5f00f38fe84229c197a0f16d # Parent 120820e30baa90043d28532ff09713693ce91a4e cleanup diff -r 120820e30baa -r 63f0719bde9a graal/com.oracle.graal.interpreter/src/com/oracle/graal/interpreter/VMAdapter.java --- a/graal/com.oracle.graal.interpreter/src/com/oracle/graal/interpreter/VMAdapter.java Tue Jul 03 16:56:40 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,313 +0,0 @@ -/* - * Copyright (c) 2012, 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 com.oracle.graal.interpreter; - -import java.lang.reflect.*; - -import sun.misc.*; - -import com.oracle.graal.api.*; -import com.oracle.graal.api.meta.*; -import com.oracle.graal.hotspot.meta.*; - - -/** - * This class encapsulates all vm specific methods for the {@link BytecodeInterpreter}. - */ -public class VMAdapter { - - private static final Unsafe unsafe = loadUnsafe(); - - protected VMAdapter() { - } - - public MetaAccessProvider getRuntime() { - return Graal.getRuntime().getCapability(MetaAccessProvider.class); - } - - public void monitorEnter(Object value) { - nullCheck(value); - unsafe.monitorEnter(value); - } - - public void monitorExit(Object value) { - nullCheck(value); - unsafe.monitorExit(value); - } - - public Object newObject(ResolvedJavaType type) throws InstantiationException { - return unsafe.allocateInstance(type.toJava()); - } - - public Object getField(Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - return unsafe.getObjectVolatile(resolveBase(base, field), offset); - } else { - return unsafe.getObject(resolveBase(base, field), offset); - } - } - - public int getFieldInt(Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - return unsafe.getIntVolatile(resolveBase(base, field), offset); - } else { - return unsafe.getInt(resolveBase(base, field), offset); - } - } - - public long getFieldLong(Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - return unsafe.getLongVolatile(resolveBase(base, field), offset); - } else { - return unsafe.getLong(resolveBase(base, field), offset); - } - } - - public double getFieldDouble(Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - return unsafe.getDoubleVolatile(resolveBase(base, field), offset); - } else { - return unsafe.getDouble(resolveBase(base, field), offset); - } - } - - public float getFieldFloat(Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - return unsafe.getFloatVolatile(resolveBase(base, field), offset); - } else { - return unsafe.getFloat(resolveBase(base, field), offset); - } - } - - public void setField(Object value, Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - unsafe.putObjectVolatile(resolveBase(base, field), offset, value); - } else { - unsafe.putObject(resolveBase(base, field), offset, value); - } - } - - public void setFieldInt(int value, Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - unsafe.putIntVolatile(resolveBase(base, field), offset, value); - } else { - unsafe.putInt(resolveBase(base, field), offset, value); - } - } - - - public void setFieldFloat(float value, Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - unsafe.putFloatVolatile(resolveBase(base, field), offset, value); - } else { - unsafe.putFloat(resolveBase(base, field), offset, value); - } - } - - public void setFieldDouble(double value, Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - unsafe.putDoubleVolatile(resolveBase(base, field), offset, value); - } else { - unsafe.putDouble(resolveBase(base, field), offset, value); - } - } - - public void setFieldLong(long value, Object base, ResolvedJavaField field) { - long offset = resolveOffset(field); - if (isVolatile(field)) { - unsafe.putDoubleVolatile(resolveBase(base, field), offset, value); - } else { - unsafe.putDouble(resolveBase(base, field), offset, value); - } - } - - public byte getArrayByte(long index, Object array) { - checkArray(array, index); - return unsafe.getByte(array, Unsafe.ARRAY_BYTE_BASE_OFFSET + Unsafe.ARRAY_BYTE_INDEX_SCALE * index); - } - - public char getArrayChar(long index, Object array) { - checkArray(array, index); - return unsafe.getChar(array, Unsafe.ARRAY_CHAR_BASE_OFFSET + Unsafe.ARRAY_CHAR_INDEX_SCALE * index); - } - - public short getArrayShort(long index, Object array) { - checkArray(array, index); - return unsafe.getShort(array, Unsafe.ARRAY_SHORT_BASE_OFFSET + Unsafe.ARRAY_SHORT_INDEX_SCALE * index); - } - - public int getArrayInt(long index, Object array) { - checkArray(array, index); - return unsafe.getInt(array, Unsafe.ARRAY_INT_BASE_OFFSET + Unsafe.ARRAY_INT_INDEX_SCALE * index); - } - - public long getArrayLong(long index, Object array) { - checkArray(array, index); - return unsafe.getLong(array, Unsafe.ARRAY_LONG_BASE_OFFSET + Unsafe.ARRAY_LONG_INDEX_SCALE * index); - } - - public double getArrayDouble(long index, Object array) { - checkArray(array, index); - return unsafe.getDouble(array, Unsafe.ARRAY_DOUBLE_BASE_OFFSET + Unsafe.ARRAY_DOUBLE_INDEX_SCALE * index); - } - - public float getArrayFloat(long index, Object array) { - checkArray(array, index); - return unsafe.getFloat(array, Unsafe.ARRAY_FLOAT_BASE_OFFSET + Unsafe.ARRAY_FLOAT_INDEX_SCALE * index); - } - - public Object getArrayObject(long index, Object array) { - checkArray(array, index); - return unsafe.getObject(array, Unsafe.ARRAY_OBJECT_BASE_OFFSET + Unsafe.ARRAY_OBJECT_INDEX_SCALE * index); - } - - public void setArrayByte(byte value, long index, Object array) { - checkArray(array, index); - if (array instanceof boolean[]) { - checkArrayType(array, boolean.class); - } else { - checkArrayType(array, byte.class); - } - unsafe.putByte(array, Unsafe.ARRAY_BYTE_BASE_OFFSET + Unsafe.ARRAY_BYTE_INDEX_SCALE * index, value); - } - - public void setArrayChar(char value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, char.class); - unsafe.putChar(array, Unsafe.ARRAY_CHAR_BASE_OFFSET + Unsafe.ARRAY_CHAR_INDEX_SCALE * index, value); - } - - public void setArrayShort(short value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, short.class); - unsafe.putShort(array, Unsafe.ARRAY_SHORT_BASE_OFFSET + Unsafe.ARRAY_SHORT_INDEX_SCALE * index, value); - } - - public void setArrayInt(int value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, int.class); - unsafe.putInt(array, Unsafe.ARRAY_INT_BASE_OFFSET + Unsafe.ARRAY_INT_INDEX_SCALE * index, value); - } - - public void setArrayLong(long value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, long.class); - unsafe.putLong(array, Unsafe.ARRAY_LONG_BASE_OFFSET + Unsafe.ARRAY_LONG_INDEX_SCALE * index, value); - } - - public void setArrayFloat(float value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, float.class); - unsafe.putFloat(array, Unsafe.ARRAY_FLOAT_BASE_OFFSET + Unsafe.ARRAY_FLOAT_INDEX_SCALE * index, value); - } - - public void setArrayDouble(double value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, double.class); - unsafe.putDouble(array, Unsafe.ARRAY_DOUBLE_BASE_OFFSET + Unsafe.ARRAY_DOUBLE_INDEX_SCALE * index, value); - } - - public void setArrayObject(Object value, long index, Object array) { - checkArray(array, index); - checkArrayType(array, value != null ? value.getClass() : null); - unsafe.putObject(array, Unsafe.ARRAY_OBJECT_BASE_OFFSET + Unsafe.ARRAY_OBJECT_INDEX_SCALE * index, value); - } - - private static void nullCheck(Object value) { - if (value == null) { - throw new NullPointerException(); - } - } - - private void checkArrayType(Object array, Class arrayType) { - if (arrayType == null) { - return; - } - ResolvedJavaType type = getRuntime().getResolvedJavaType(array.getClass()).componentType(); - if (!type.toJava().isAssignableFrom(arrayType)) { - throw new ArrayStoreException(arrayType.getName()); - } - } - - private void checkArray(Object array, long index) { - nullCheck(array); - ResolvedJavaType type = getRuntime().getResolvedJavaType(array.getClass()); - if (!type.isArrayClass()) { - throw new ArrayStoreException(array.getClass().getName()); - } - if (index < 0 || index >= arrayLength(array)) { - throw new ArrayIndexOutOfBoundsException((int) index); - } - } - - private static int arrayLength(Object array) { - assert array != null; - return Array.getLength(array); - } - - private static boolean isVolatile(ResolvedJavaField field) { - return Modifier.isVolatile(field.accessFlags()); - } - - private static long resolveOffset(ResolvedJavaField field) { - return ((HotSpotResolvedJavaField) field).offset(); - } - - private static Object resolveBase(Object base, ResolvedJavaField field) { - Object accessorBase = base; - if (accessorBase == null) { - accessorBase = field.holder().toJava(); - } - return accessorBase; - } - - private static Unsafe loadUnsafe() { - try { - return Unsafe.getUnsafe(); - } catch (SecurityException e) { - } - try { - Field theUnsafeInstance = Unsafe.class.getDeclaredField("theUnsafe"); - theUnsafeInstance.setAccessible(true); - return (Unsafe) theUnsafeInstance.get(Unsafe.class); - } catch (Exception e) { - throw new RuntimeException("exception while trying to get Unsafe.theUnsafe via reflection:", e); - } - } - - private static final VMAdapter instance = new VMAdapter(); - public static VMAdapter getInstance() { - return instance; - } - - -}