Mercurial > hg > graal-compiler
view graal/com.oracle.max.asmdis/src/com/sun/max/asm/InlineDataRecorder.java @ 4309:4a609a685fa4
changes to Node structures:
* add more uses of higher-level graph manipulation methods
* CanonicalierPhase cleanup
* introduce FloatingReadNode, make ReadNode an ordinary fixed nodeToBlock
* let Canonicalizable.canonical return ValueNode (instead of Node)
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Tue, 17 Jan 2012 19:45:39 +0100 |
parents | bc8527f3071c |
children |
line wrap: on
line source
/* * Copyright (c) 2007, 2011, 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.sun.max.asm; import java.io.*; import java.util.*; import com.sun.max.program.*; /** * A facility for recording inline data descriptors associated with a sequence of assembled code. * The recorded descriptors described the structure of some contiguous inline data encoded * in the assembled code. */ public class InlineDataRecorder { private List<InlineDataDescriptor> descriptors; private boolean normalized; /** * Adds an inline data descriptor to this object. */ public void add(InlineDataDescriptor inlineData) { if (inlineData.size() != 0) { if (descriptors == null) { descriptors = new ArrayList<>(); } descriptors.add(inlineData); normalized = false; } } /** * Gets the sequence of inline data descriptors derived from the descriptors that have been * {@linkplain #add(InlineDataDescriptor) added} to this object. The returned sequence is comprised of * non-overlapping descriptors (i.e. the range implied by each descriptor's * {@linkplain InlineDataDescriptor#startPosition() start} and {@linkplain InlineDataDescriptor#size() size} is * disjoint from all other descriptors) that are sorted in ascending order of their * {@linkplain InlineDataDescriptor#startPosition() start} positions. * * @return null if no descriptors have been added to this object */ public List<InlineDataDescriptor> descriptors() { if (!normalized) { normalize(); } return descriptors; } /** * Gets the result of {@link #descriptors()} encoded as a byte array in the format described * {@linkplain InlineDataDescriptor here}. */ public byte[] encodedDescriptors() { if (descriptors == null) { return null; } try { normalize(); final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); final DataOutputStream dataOutputStream = new DataOutputStream(byteArrayOutputStream); dataOutputStream.writeInt(descriptors.size()); for (InlineDataDescriptor inlineDataDescriptor : descriptors) { inlineDataDescriptor.writeTo(dataOutputStream); } final byte[] result = byteArrayOutputStream.toByteArray(); return result; } catch (IOException ioException) { throw ProgramError.unexpected(ioException); } } private void normalize() { if (descriptors != null && !normalized) { final SortedSet<InlineDataDescriptor> sortedEntries = new TreeSet<>(descriptors); final List<InlineDataDescriptor> entries = new ArrayList<>(descriptors.size()); int lastEnd = 0; for (InlineDataDescriptor inlineDataDescriptor : sortedEntries) { if (inlineDataDescriptor.startPosition() >= lastEnd) { entries.add(inlineDataDescriptor); lastEnd = inlineDataDescriptor.endPosition(); } } descriptors = entries; normalized = true; } } }