truffle: graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotSymbol.java annotate

annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotSymbol.java @ 14145:4ff08c0366ae

Encapsulate LIR class fields.

author	Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date	Tue, 11 Mar 2014 16:55:57 +0100
parents	0ffe9e4bb364
children	96bb07a5d667

rev	line source
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	1 /*
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	4 *
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	7 * published by the Free Software Foundation.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	8 *
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	13 * accompanied this code).
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	14 *
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	18 *
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	21 * questions.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	22 */
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	23 package com.oracle.graal.hotspot;
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	24
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	25 import static com.oracle.graal.graph.UnsafeAccess.*;
13261 0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	26 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	27
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	28 import java.io.*;
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	29
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	30 import com.oracle.graal.graph.*;
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	31
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	32 /**
13261 0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	33 * Represents a metaspace {@code Symbol}.
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	34 */
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	35 public class HotSpotSymbol {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	36
13261 0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	37 private final long metaspaceSymbol;
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	38
13261 0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	39 public HotSpotSymbol(long metaspaceSymbol) {
0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	40 assert metaspaceSymbol != 0;
0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	41 this.metaspaceSymbol = metaspaceSymbol;
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	42 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	43
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	44 /**
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	45 * Decodes this {@code Symbol} and returns the symbol string as {@link java.lang.String}.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	46 */
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	47 public String asString() {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	48 return readModifiedUTF8(asByteArray());
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	49 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	50
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	51 private static String readModifiedUTF8(byte[] buf) {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	52 try {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	53 final int length = buf.length;
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	54 byte[] tmp = new byte[length + 2];
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	55 // write modified UTF-8 length as short in big endian
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	56 tmp[0] = (byte) ((length >>> 8) & 0xFF);
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	57 tmp[1] = (byte) ((length >>> 0) & 0xFF);
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	58 // copy the data
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	59 System.arraycopy(buf, 0, tmp, 2, length);
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	60 DataInputStream dis = new DataInputStream(new ByteArrayInputStream(tmp));
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	61 return dis.readUTF();
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	62 } catch (IOException e) {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	63 // This should never happen so let's fail hard here.
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	64 throw GraalInternalError.shouldNotReachHere("error reading symbol: " + e);
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	65 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	66 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	67
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	68 private byte[] asByteArray() {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	69 final int length = getLength();
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	70 byte[] result = new byte[length];
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	71 for (int index = 0; index < length; index++) {
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	72 result[index] = getByteAt(index);
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	73 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	74 return result;
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	75 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	76
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	77 private int getLength() {
13261 0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	78 return unsafe.getShort(metaspaceSymbol + runtime().getConfig().symbolLengthOffset);
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	79 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	80
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	81 private byte getByteAt(int index) {
13261 0ffe9e4bb364 don't go through VM to create HotSpotResolvedObjectType (part 1) twisti parents: 13254 diff changeset	82 return unsafe.getByte(metaspaceSymbol + runtime().getConfig().symbolBodyOffset + index);
13254 42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	83 }
42aaf7306707 Teach Graal about Symbol and ConstantPool so we can move more logic into Java. We'll see how that ends... twisti parents: diff changeset	84 }

Mercurial > hg > truffle

annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotSymbol.java @ 14145:4ff08c0366ae