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| 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 | +} | |