J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2007 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.misc; |
| 27 | import java.io.PrintStream; |
| 28 | |
| 29 | public class Version { |
| 30 | |
| 31 | |
| 32 | private static final String launcher_name = |
| 33 | "@@launcher_name@@"; |
| 34 | |
| 35 | private static final String java_version = |
| 36 | "@@java_version@@"; |
| 37 | |
| 38 | private static final String java_runtime_name = |
| 39 | "@@java_runtime_name@@"; |
| 40 | |
| 41 | private static final String java_runtime_version = |
| 42 | "@@java_runtime_version@@"; |
| 43 | |
| 44 | static { |
| 45 | init(); |
| 46 | } |
| 47 | |
| 48 | public static void init() { |
| 49 | System.setProperty("java.version", java_version); |
| 50 | System.setProperty("java.runtime.version", java_runtime_version); |
| 51 | System.setProperty("java.runtime.name", java_runtime_name); |
| 52 | } |
| 53 | |
| 54 | private static boolean versionsInitialized = false; |
| 55 | private static int jvm_major_version = 0; |
| 56 | private static int jvm_minor_version = 0; |
| 57 | private static int jvm_micro_version = 0; |
| 58 | private static int jvm_update_version = 0; |
| 59 | private static int jvm_build_number = 0; |
| 60 | private static String jvm_special_version = null; |
| 61 | private static int jdk_major_version = 0; |
| 62 | private static int jdk_minor_version = 0; |
| 63 | private static int jdk_micro_version = 0; |
| 64 | private static int jdk_update_version = 0; |
| 65 | private static int jdk_build_number = 0; |
| 66 | private static String jdk_special_version = null; |
| 67 | |
| 68 | /** |
| 69 | * In case you were wondering this method is called by java -version. |
| 70 | * Sad that it prints to stderr; would be nicer if default printed on |
| 71 | * stdout. |
| 72 | */ |
| 73 | public static void print() { |
| 74 | print(System.err); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * This is the same as print except that it adds an extra line-feed |
| 79 | * at the end, typically used by the -showversion in the launcher |
| 80 | */ |
| 81 | public static void println() { |
| 82 | print(System.err); |
| 83 | System.err.println(); |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Give a stream, it will print version info on it. |
| 88 | */ |
| 89 | public static void print(PrintStream ps) { |
| 90 | /* First line: platform version. */ |
| 91 | ps.println(launcher_name + " version \"" + java_version + "\""); |
| 92 | |
| 93 | /* Second line: runtime version (ie, libraries). */ |
| 94 | ps.println(java_runtime_name + " (build " + |
| 95 | java_runtime_version + ")"); |
| 96 | |
| 97 | /* Third line: JVM information. */ |
| 98 | String java_vm_name = System.getProperty("java.vm.name"); |
| 99 | String java_vm_version = System.getProperty("java.vm.version"); |
| 100 | String java_vm_info = System.getProperty("java.vm.info"); |
| 101 | ps.println(java_vm_name + " (build " + java_vm_version + ", " + |
| 102 | java_vm_info + ")"); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | /** |
| 107 | * Returns the major version of the running JVM if it's 1.6 or newer |
| 108 | * or any RE VM build. It will return 0 if it's an internal 1.5 or |
| 109 | * 1.4.x build. |
| 110 | * |
| 111 | * @since 1.6 |
| 112 | */ |
| 113 | public static synchronized int jvmMajorVersion() { |
| 114 | if (!versionsInitialized) { |
| 115 | initVersions(); |
| 116 | } |
| 117 | return jvm_major_version; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Returns the minor version of the running JVM if it's 1.6 or newer |
| 122 | * or any RE VM build. It will return 0 if it's an internal 1.5 or |
| 123 | * 1.4.x build. |
| 124 | * @since 1.6 |
| 125 | */ |
| 126 | public static synchronized int jvmMinorVersion() { |
| 127 | if (!versionsInitialized) { |
| 128 | initVersions(); |
| 129 | } |
| 130 | return jvm_minor_version; |
| 131 | } |
| 132 | |
| 133 | |
| 134 | /** |
| 135 | * Returns the micro version of the running JVM if it's 1.6 or newer |
| 136 | * or any RE VM build. It will return 0 if it's an internal 1.5 or |
| 137 | * 1.4.x build. |
| 138 | * @since 1.6 |
| 139 | */ |
| 140 | public static synchronized int jvmMicroVersion() { |
| 141 | if (!versionsInitialized) { |
| 142 | initVersions(); |
| 143 | } |
| 144 | return jvm_micro_version; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Returns the update release version of the running JVM if it's |
| 149 | * a RE build. It will return 0 if it's an internal build. |
| 150 | * @since 1.6 |
| 151 | */ |
| 152 | public static synchronized int jvmUpdateVersion() { |
| 153 | if (!versionsInitialized) { |
| 154 | initVersions(); |
| 155 | } |
| 156 | return jvm_update_version; |
| 157 | } |
| 158 | |
| 159 | public static synchronized String jvmSpecialVersion() { |
| 160 | if (!versionsInitialized) { |
| 161 | initVersions(); |
| 162 | } |
| 163 | if (jvm_special_version == null) { |
| 164 | jvm_special_version = getJvmSpecialVersion(); |
| 165 | } |
| 166 | return jvm_special_version; |
| 167 | } |
| 168 | public static native String getJvmSpecialVersion(); |
| 169 | |
| 170 | /** |
| 171 | * Returns the build number of the running JVM if it's a RE build |
| 172 | * It will return 0 if it's an internal build. |
| 173 | * @since 1.6 |
| 174 | */ |
| 175 | public static synchronized int jvmBuildNumber() { |
| 176 | if (!versionsInitialized) { |
| 177 | initVersions(); |
| 178 | } |
| 179 | return jvm_build_number; |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Returns the major version of the running JDK. |
| 184 | * |
| 185 | * @since 1.6 |
| 186 | */ |
| 187 | public static synchronized int jdkMajorVersion() { |
| 188 | if (!versionsInitialized) { |
| 189 | initVersions(); |
| 190 | } |
| 191 | return jdk_major_version; |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Returns the minor version of the running JDK. |
| 196 | * @since 1.6 |
| 197 | */ |
| 198 | public static synchronized int jdkMinorVersion() { |
| 199 | if (!versionsInitialized) { |
| 200 | initVersions(); |
| 201 | } |
| 202 | return jdk_minor_version; |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Returns the micro version of the running JDK. |
| 207 | * @since 1.6 |
| 208 | */ |
| 209 | public static synchronized int jdkMicroVersion() { |
| 210 | if (!versionsInitialized) { |
| 211 | initVersions(); |
| 212 | } |
| 213 | return jdk_micro_version; |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * Returns the update release version of the running JDK if it's |
| 218 | * a RE build. It will return 0 if it's an internal build. |
| 219 | * @since 1.6 |
| 220 | */ |
| 221 | public static synchronized int jdkUpdateVersion() { |
| 222 | if (!versionsInitialized) { |
| 223 | initVersions(); |
| 224 | } |
| 225 | return jdk_update_version; |
| 226 | } |
| 227 | |
| 228 | public static synchronized String jdkSpecialVersion() { |
| 229 | if (!versionsInitialized) { |
| 230 | initVersions(); |
| 231 | } |
| 232 | if (jdk_special_version == null) { |
| 233 | jdk_special_version = getJdkSpecialVersion(); |
| 234 | } |
| 235 | return jdk_special_version; |
| 236 | } |
| 237 | public static native String getJdkSpecialVersion(); |
| 238 | |
| 239 | /** |
| 240 | * Returns the build number of the running JDK if it's a RE build |
| 241 | * It will return 0 if it's an internal build. |
| 242 | * @since 1.6 |
| 243 | */ |
| 244 | public static synchronized int jdkBuildNumber() { |
| 245 | if (!versionsInitialized) { |
| 246 | initVersions(); |
| 247 | } |
| 248 | return jdk_build_number; |
| 249 | } |
| 250 | |
| 251 | // true if JVM exports the version info including the capabilities |
| 252 | private static boolean jvmVersionInfoAvailable; |
| 253 | private static synchronized void initVersions() { |
| 254 | if (versionsInitialized) { |
| 255 | return; |
| 256 | } |
| 257 | jvmVersionInfoAvailable = getJvmVersionInfo(); |
| 258 | if (!jvmVersionInfoAvailable) { |
| 259 | // parse java.vm.version for older JVM before the |
| 260 | // new JVM_GetVersionInfo is added. |
| 261 | // valid format of the version string is: |
| 262 | // n.n.n[_uu[c]][-<identifer>]-bxx |
| 263 | CharSequence cs = System.getProperty("java.vm.version"); |
| 264 | if (cs.length() >= 5 && |
| 265 | Character.isDigit(cs.charAt(0)) && cs.charAt(1) == '.' && |
| 266 | Character.isDigit(cs.charAt(2)) && cs.charAt(3) == '.' && |
| 267 | Character.isDigit(cs.charAt(4))) { |
| 268 | jvm_major_version = Character.digit(cs.charAt(0), 10); |
| 269 | jvm_minor_version = Character.digit(cs.charAt(2), 10); |
| 270 | jvm_micro_version = Character.digit(cs.charAt(4), 10); |
| 271 | cs = cs.subSequence(5, cs.length()); |
| 272 | if (cs.charAt(0) == '_' && cs.length() >= 3 && |
| 273 | Character.isDigit(cs.charAt(1)) && |
| 274 | Character.isDigit(cs.charAt(2))) { |
| 275 | int nextChar = 3; |
| 276 | try { |
| 277 | String uu = cs.subSequence(1, 3).toString(); |
| 278 | jvm_update_version = Integer.valueOf(uu).intValue(); |
| 279 | if (cs.length() >= 4) { |
| 280 | char c = cs.charAt(3); |
| 281 | if (c >= 'a' && c <= 'z') { |
| 282 | jvm_special_version = Character.toString(c); |
| 283 | nextChar++; |
| 284 | } |
| 285 | } |
| 286 | } catch (NumberFormatException e) { |
| 287 | // not conforming to the naming convention |
| 288 | return; |
| 289 | } |
| 290 | cs = cs.subSequence(nextChar, cs.length()); |
| 291 | } |
| 292 | if (cs.charAt(0) == '-') { |
| 293 | // skip the first character |
| 294 | // valid format: <identifier>-bxx or bxx |
| 295 | // non-product VM will have -debug|-release appended |
| 296 | cs = cs.subSequence(1, cs.length()); |
| 297 | String[] res = cs.toString().split("-"); |
| 298 | for (String s : res) { |
| 299 | if (s.charAt(0) == 'b' && s.length() == 3 && |
| 300 | Character.isDigit(s.charAt(1)) && |
| 301 | Character.isDigit(s.charAt(2))) { |
| 302 | jvm_build_number = |
| 303 | Integer.valueOf(s.substring(1, 3)).intValue(); |
| 304 | break; |
| 305 | } |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | } |
| 310 | getJdkVersionInfo(); |
| 311 | versionsInitialized = true; |
| 312 | } |
| 313 | |
| 314 | // Gets the JVM version info if available and sets the jvm_*_version fields |
| 315 | // and its capabilities. |
| 316 | // |
| 317 | // Return false if not available which implies an old VM (Tiger or before). |
| 318 | private static native boolean getJvmVersionInfo(); |
| 319 | private static native void getJdkVersionInfo(); |
| 320 | |
| 321 | } |
| 322 | |
| 323 | // Help Emacs a little because this file doesn't end in .java. |
| 324 | // |
| 325 | // Local Variables: *** |
| 326 | // mode: java *** |
| 327 | // End: *** |