Mercurial > hg > graal-compiler
view graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/FieldIntrospection.java @ 15779:8c34e2cc4add
Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Mon, 19 May 2014 17:14:36 -0700 |
parents | 21663230ba88 |
children | b7748fffea09 |
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/* * Copyright (c) 2012, 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.compiler.common; import java.lang.reflect.*; import java.util.*; import java.util.concurrent.*; public abstract class FieldIntrospection extends UnsafeAccess { /** * Interface used by {@link #rescanAllFieldOffsets(CalcOffset)} to determine the offset (in * bytes) of a field. */ public interface CalcOffset { long getOffset(Field field); } public static class DefaultCalcOffset implements CalcOffset { @Override public long getOffset(Field field) { return unsafe.objectFieldOffset(field); } } protected static final ConcurrentHashMap<Class<?>, FieldIntrospection> allClasses = new ConcurrentHashMap<>(); private final Class<?> clazz; protected long[] dataOffsets; protected Map<Long, String> fieldNames; protected Map<Long, Class<?>> fieldTypes; public FieldIntrospection(Class<?> clazz) { this.clazz = clazz; } public Class<?> getClazz() { return clazz; } public static void rescanAllFieldOffsets(CalcOffset calc) { for (FieldIntrospection nodeClass : allClasses.values()) { nodeClass.rescanFieldOffsets(calc); } } protected abstract void rescanFieldOffsets(CalcOffset calc); public abstract static class BaseFieldScanner { private final CalcOffset calc; /** The offsets of fields that are not specially handled by subclasses. */ public final ArrayList<Long> dataOffsets = new ArrayList<>(); public final Map<Long, String> fieldNames = new HashMap<>(); public final Map<Long, Class<?>> fieldTypes = new HashMap<>(); protected BaseFieldScanner(CalcOffset calc) { this.calc = calc; } public void scan(Class<?> clazz) { Class<?> currentClazz = clazz; do { for (Field field : currentClazz.getDeclaredFields()) { if (Modifier.isStatic(field.getModifiers())) { continue; } Class<?> type = field.getType(); long offset = calc.getOffset(field); // scanField() may overwrite the name with a customized name. fieldNames.put(offset, field.getName()); fieldTypes.put(offset, type); scanField(field, type, offset); } currentClazz = currentClazz.getSuperclass(); } while (currentClazz.getSuperclass() != Object.class); } protected abstract void scanField(Field field, Class<?> type, long offset); } protected static void copyInto(long[] dest, long[] src) { assert dest.length == src.length; for (int i = 0; i < dest.length; i++) { dest[i] = src[i]; } } protected static <T> void copyInto(T[] dest, T[] src) { assert dest.length == src.length; for (int i = 0; i < dest.length; i++) { dest[i] = src[i]; } } protected static <T> void copyInto(T[] dest, List<T> src) { assert dest.length == src.size(); for (int i = 0; i < dest.length; i++) { dest[i] = src.get(i); } } protected static <T> T[] arrayUsingSortedOffsets(Map<Long, T> map, long[] sortedOffsets, T[] result) { for (int i = 0; i < sortedOffsets.length; i++) { result[i] = map.get(sortedOffsets[i]); } return result; } protected static long[] sortedLongCopy(ArrayList<Long> list1) { Collections.sort(list1); long[] result = new long[list1.size()]; for (int i = 0; i < list1.size(); i++) { result[i] = list1.get(i); } return result; } protected static long[] sortedLongCopy(ArrayList<Long> list1, ArrayList<Long> list2) { Collections.sort(list1); Collections.sort(list2); long[] result = new long[list1.size() + list2.size()]; for (int i = 0; i < list1.size(); i++) { result[i] = list1.get(i); } for (int i = 0; i < list2.size(); i++) { result[list1.size() + i] = list2.get(i); } return result; } }