Showing the changes to java/pkg/com/sun/tools/example/debug/tty/Env.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,322 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved. | ||
| 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.tools.example.debug.tty; | ||
| 27 | |||
| 28 | import com.sun.jdi.*; | ||
| 29 | import com.sun.jdi.request.StepRequest; | ||
| 30 | import com.sun.jdi.request.MethodEntryRequest; | ||
| 31 | import com.sun.jdi.request.MethodExitRequest; | ||
| 32 | import java.util.*; | ||
| 33 | import java.io.*; | ||
| 34 | |||
| 35 | |||
| 36 | class Env { | ||
| 37 | |||
| 38 | static EventRequestSpecList specList = new EventRequestSpecList(); | ||
| 39 | |||
| 40 | private static VMConnection connection; | ||
| 41 | |||
| 42 | private static SourceMapper sourceMapper = new SourceMapper(""); | ||
| 43 | private static List<String> excludes; | ||
| 44 | |||
| 45 | private static final int SOURCE_CACHE_SIZE = 5; | ||
| 46 | private static List<SourceCode> sourceCache = new LinkedList<SourceCode>(); | ||
| 47 | |||
| 48 | private static HashMap<String, Value> savedValues = new HashMap<String, Value>(); | ||
| 49 | private static Method atExitMethod; | ||
| 50 | |||
| 51 | static void init(String connectSpec, boolean openNow, int flags) { | ||
| 52 | connection = new VMConnection(connectSpec, flags); | ||
| 53 | if (!connection.isLaunch() || openNow) { | ||
| 54 | connection.open(); | ||
| 55 | } | ||
| 56 | } | ||
| 57 | |||
| 58 | static VMConnection connection() { | ||
| 59 | return connection; | ||
| 60 | } | ||
| 61 | |||
| 62 | static VirtualMachine vm() { | ||
| 63 | return connection.vm(); | ||
| 64 | } | ||
| 65 | |||
| 66 | static void shutdown() { | ||
| 67 | shutdown(null); | ||
| 68 | } | ||
| 69 | |||
| 70 | static void shutdown(String message) { | ||
| 71 | if (connection != null) { | ||
| 72 | try { | ||
| 73 | connection.disposeVM(); | ||
| 74 | } catch (VMDisconnectedException e) { | ||
| 75 | // Shutting down after the VM has gone away. This is | ||
| 76 | // not an error, and we just ignore it. | ||
| 77 | } | ||
| 78 | } | ||
| 79 | if (message != null) { | ||
| 80 | MessageOutput.lnprint(message); | ||
| 81 | MessageOutput.println(); | ||
| 82 | } | ||
| 83 | System.exit(0); | ||
| 84 | } | ||
| 85 | |||
| 86 | static void setSourcePath(String srcPath) { | ||
| 87 | sourceMapper = new SourceMapper(srcPath); | ||
| 88 | sourceCache.clear(); | ||
| 89 | } | ||
| 90 | |||
| 91 | static void setSourcePath(List<String> srcList) { | ||
| 92 | sourceMapper = new SourceMapper(srcList); | ||
| 93 | sourceCache.clear(); | ||
| 94 | } | ||
| 95 | |||
| 96 | static String getSourcePath() { | ||
| 97 | return sourceMapper.getSourcePath(); | ||
| 98 | } | ||
| 99 | |||
| 100 | static private List<String> excludes() { | ||
| 101 | if (excludes == null) { | ||
| 102 | setExcludes("java.*, javax.*, sun.*, com.sun.*"); | ||
| 103 | } | ||
| 104 | return excludes; | ||
| 105 | } | ||
| 106 | |||
| 107 | static String excludesString() { | ||
| 108 | StringBuffer buffer = new StringBuffer(); | ||
| 109 | for (String pattern : excludes()) { | ||
| 110 | buffer.append(pattern); | ||
| 111 | buffer.append(","); | ||
| 112 | } | ||
| 113 | return buffer.toString(); | ||
| 114 | } | ||
| 115 | |||
| 116 | static void addExcludes(StepRequest request) { | ||
| 117 | for (String pattern : excludes()) { | ||
| 118 | request.addClassExclusionFilter(pattern); | ||
| 119 | } | ||
| 120 | } | ||
| 121 | |||
| 122 | static void addExcludes(MethodEntryRequest request) { | ||
| 123 | for (String pattern : excludes()) { | ||
| 124 | request.addClassExclusionFilter(pattern); | ||
| 125 | } | ||
| 126 | } | ||
| 127 | |||
| 128 | static void addExcludes(MethodExitRequest request) { | ||
| 129 | for (String pattern : excludes()) { | ||
| 130 | request.addClassExclusionFilter(pattern); | ||
| 131 | } | ||
| 132 | } | ||
| 133 | |||
| 134 | static void setExcludes(String excludeString) { | ||
| 135 | StringTokenizer t = new StringTokenizer(excludeString, " ,;"); | ||
| 136 | List<String> list = new ArrayList<String>(); | ||
| 137 | while (t.hasMoreTokens()) { | ||
| 138 | list.add(t.nextToken()); | ||
| 139 | } | ||
| 140 | excludes = list; | ||
| 141 | } | ||
| 142 | |||
| 143 | static Method atExitMethod() { | ||
| 144 | return atExitMethod; | ||
| 145 | } | ||
| 146 | |||
| 147 | static void setAtExitMethod(Method mmm) { | ||
| 148 | atExitMethod = mmm; | ||
| 149 | } | ||
| 150 | |||
| 151 | /** | ||
| 152 | * Return a Reader cooresponding to the source of this location. | ||
| 153 | * Return null if not available. | ||
| 154 | * Note: returned reader must be closed. | ||
| 155 | */ | ||
| 156 | static BufferedReader sourceReader(Location location) { | ||
| 157 | return sourceMapper.sourceReader(location); | ||
| 158 | } | ||
| 159 | |||
| 160 | static synchronized String sourceLine(Location location, int lineNumber) | ||
| 161 | throws IOException { | ||
| 162 | if (lineNumber == -1) { | ||
| 163 | throw new IllegalArgumentException(); | ||
| 164 | } | ||
| 165 | |||
| 166 | try { | ||
| 167 | String fileName = location.sourceName(); | ||
| 168 | |||
| 169 | Iterator<SourceCode> iter = sourceCache.iterator(); | ||
| 170 | SourceCode code = null; | ||
| 171 | while (iter.hasNext()) { | ||
| 172 | SourceCode candidate = iter.next(); | ||
| 173 | if (candidate.fileName().equals(fileName)) { | ||
| 174 | code = candidate; | ||
| 175 | iter.remove(); | ||
| 176 | break; | ||
| 177 | } | ||
| 178 | } | ||
| 179 | if (code == null) { | ||
| 180 | BufferedReader reader = sourceReader(location); | ||
| 181 | if (reader == null) { | ||
| 182 | throw new FileNotFoundException(fileName); | ||
| 183 | } | ||
| 184 | code = new SourceCode(fileName, reader); | ||
| 185 | if (sourceCache.size() == SOURCE_CACHE_SIZE) { | ||
| 186 | sourceCache.remove(sourceCache.size() - 1); | ||
| 187 | } | ||
| 188 | } | ||
| 189 | sourceCache.add(0, code); | ||
| 190 | return code.sourceLine(lineNumber); | ||
| 191 | } catch (AbsentInformationException e) { | ||
| 192 | throw new IllegalArgumentException(); | ||
| 193 | } | ||
| 194 | } | ||
| 195 | |||
| 196 | /** Return a description of an object. */ | ||
| 197 | static String description(ObjectReference ref) { | ||
| 198 | ReferenceType clazz = ref.referenceType(); | ||
| 199 | long id = ref.uniqueID(); | ||
| 200 | if (clazz == null) { | ||
| 201 | return toHex(id); | ||
| 202 | } else { | ||
| 203 | return MessageOutput.format("object description and hex id", | ||
| 204 | new Object [] {clazz.name(), | ||
| 205 | toHex(id)}); | ||
| 206 | } | ||
| 207 | } | ||
| 208 | |||
| 209 | /** Convert a long to a hexadecimal string. */ | ||
| 210 | static String toHex(long n) { | ||
| 211 | char s1[] = new char[16]; | ||
| 212 | char s2[] = new char[18]; | ||
| 213 | |||
| 214 | /* Store digits in reverse order. */ | ||
| 215 | int i = 0; | ||
| 216 | do { | ||
| 217 | long d = n & 0xf; | ||
| 218 | s1[i++] = (char)((d < 10) ? ('0' + d) : ('a' + d - 10)); | ||
| 219 | } while ((n >>>= 4) > 0); | ||
| 220 | |||
| 221 | /* Now reverse the array. */ | ||
| 222 | s2[0] = '0'; | ||
| 223 | s2[1] = 'x'; | ||
| 224 | int j = 2; | ||
| 225 | while (--i >= 0) { | ||
| 226 | s2[j++] = s1[i]; | ||
| 227 | } | ||
| 228 | return new String(s2, 0, j); | ||
| 229 | } | ||
| 230 | |||
| 231 | /** Convert hexadecimal strings to longs. */ | ||
| 232 | static long fromHex(String hexStr) { | ||
| 233 | String str = hexStr.startsWith("0x") ? | ||
| 234 | hexStr.substring(2).toLowerCase() : hexStr.toLowerCase(); | ||
| 235 | if (hexStr.length() == 0) { | ||
| 236 | throw new NumberFormatException(); | ||
| 237 | } | ||
| 238 | |||
| 239 | long ret = 0; | ||
| 240 | for (int i = 0; i < str.length(); i++) { | ||
| 241 | int c = str.charAt(i); | ||
| 242 | if (c >= '0' && c <= '9') { | ||
| 243 | ret = (ret * 16) + (c - '0'); | ||
| 244 | } else if (c >= 'a' && c <= 'f') { | ||
| 245 | ret = (ret * 16) + (c - 'a' + 10); | ||
| 246 | } else { | ||
| 247 | throw new NumberFormatException(); | ||
| 248 | } | ||
| 249 | } | ||
| 250 | return ret; | ||
| 251 | } | ||
| 252 | |||
| 253 | static ReferenceType getReferenceTypeFromToken(String idToken) { | ||
| 254 | ReferenceType cls = null; | ||
| 255 | if (Character.isDigit(idToken.charAt(0))) { | ||
| 256 | cls = null; | ||
| 257 | } else if (idToken.startsWith("*.")) { | ||
| 258 | // This notation saves typing by letting the user omit leading | ||
| 259 | // package names. The first | ||
| 260 | // loaded class whose name matches this limited regular | ||
| 261 | // expression is selected. | ||
| 262 | idToken = idToken.substring(1); | ||
| 263 | for (ReferenceType type : Env.vm().allClasses()) { | ||
| 264 | if (type.name().endsWith(idToken)) { | ||
| 265 | cls = type; | ||
| 266 | break; | ||
| 267 | } | ||
| 268 | } | ||
| 269 | } else { | ||
| 270 | // It's a class name | ||
| 271 | List<ReferenceType> classes = Env.vm().classesByName(idToken); | ||
| 272 | if (classes.size() > 0) { | ||
| 273 | // TO DO: handle multiples | ||
| 274 | cls = classes.get(0); | ||
| 275 | } | ||
| 276 | } | ||
| 277 | return cls; | ||
| 278 | } | ||
| 279 | |||
| 280 | static Set<String> getSaveKeys() { | ||
| 281 | return savedValues.keySet(); | ||
| 282 | } | ||
| 283 | |||
| 284 | static Value getSavedValue(String key) { | ||
| 285 | return savedValues.get(key); | ||
| 286 | } | ||
| 287 | |||
| 288 | static void setSavedValue(String key, Value value) { | ||
| 289 | savedValues.put(key, value); | ||
| 290 | } | ||
| 291 | |||
| 292 | static class SourceCode { | ||
| 293 | private String fileName; | ||
| 294 | private List<String> sourceLines = new ArrayList<String>(); | ||
| 295 | |||
| 296 | SourceCode(String fileName, BufferedReader reader) throws IOException { | ||
| 297 | this.fileName = fileName; | ||
| 298 | try { | ||
| 299 | String line = reader.readLine(); | ||
| 300 | while (line != null) { | ||
| 301 | sourceLines.add(line); | ||
| 302 | line = reader.readLine(); | ||
| 303 | } | ||
| 304 | } finally { | ||
| 305 | reader.close(); | ||
| 306 | } | ||
| 307 | } | ||
| 308 | |||
| 309 | String fileName() { | ||
| 310 | return fileName; | ||
| 311 | } | ||
| 312 | |||
| 313 | String sourceLine(int number) { | ||
| 314 | int index = number - 1; // list is 0-indexed | ||
| 315 | if (index >= sourceLines.size()) { | ||
| 316 | return null; | ||
| 317 | } else { | ||
| 318 | return sourceLines.get(index); | ||
| 319 | } | ||
| 320 | } | ||
| 321 | } | ||
| 322 | } | ||