Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/CStringUtilities.java @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
| author | mikael |
|---|---|
| date | Tue, 24 Dec 2013 11:48:39 -0800 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.utilities; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 | |
| 32 /** A utility class encapsulating useful operations on C strings | |
| 33 represented as Addresses */ | |
| 34 | |
| 35 public class CStringUtilities { | |
| 36 /** Return the length of a null-terminated ASCII string in the | |
| 37 remote process */ | |
| 38 public static int getStringLength(Address addr) { | |
| 39 int i = 0; | |
| 40 while (addr.getCIntegerAt(i, 1, false) != 0) { | |
| 41 i++; | |
| 42 } | |
| 43 return i; | |
| 44 } | |
| 45 | |
| 46 private static String encoding = System.getProperty("file.encoding", "US-ASCII"); | |
| 47 | |
| 48 /** Fetch a null-terminated ASCII string from the remote process. | |
| 49 Returns null if the argument is null, otherwise returns a | |
| 50 non-null string (for example, returns an empty string if the | |
| 51 first character fetched is the null terminator). */ | |
| 52 public static String getString(Address addr) { | |
| 53 if (addr == null) { | |
| 54 return null; | |
| 55 } | |
| 56 | |
| 57 List data = new ArrayList(); | |
| 58 byte val = 0; | |
| 59 long i = 0; | |
| 60 do { | |
| 61 val = (byte) addr.getCIntegerAt(i, 1, false); | |
| 62 if (val != 0) { | |
| 63 data.add(new Byte(val)); | |
| 64 } | |
| 65 ++i; | |
| 66 } while (val != 0); | |
| 67 | |
| 68 // Convert to byte[] and from there to String | |
| 69 byte[] bytes = new byte[data.size()]; | |
| 70 for (i = 0; i < data.size(); ++i) { | |
| 71 bytes[(int) i] = ((Byte) data.get((int) i)).byteValue(); | |
| 72 } | |
| 73 // FIXME: When we switch to use JDK 6 to build SA, | |
| 74 // we can change the following to just return: | |
| 75 // return new String(bytes, Charset.defaultCharset()); | |
| 76 try { | |
| 77 return new String(bytes, encoding); | |
| 78 } catch (UnsupportedEncodingException e) { | |
| 79 throw new RuntimeException("Error converting bytes to String using " + encoding + " encoding", e); | |
| 80 } | |
| 81 } | |
| 82 } |