1 /* 2 * Copyright (c) 2014, 2017, 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 jdk.internal.module; 27 28 import java.io.File; 29 import java.io.PrintStream; 30 import java.lang.module.Configuration; 31 import java.lang.module.ModuleDescriptor; 32 import java.lang.module.ModuleFinder; 33 import java.lang.module.ModuleReference; 34 import java.lang.module.ResolvedModule; 35 import java.lang.reflect.Layer; 36 import java.lang.reflect.LayerInstantiationException; 37 import java.lang.reflect.Module; 38 import java.net.URI; 39 import java.nio.file.Path; 40 import java.nio.file.Paths; 41 import java.util.ArrayList; 42 import java.util.Collections; 43 import java.util.HashMap; 44 import java.util.HashSet; 45 import java.util.List; 46 import java.util.Map; 47 import java.util.Optional; 48 import java.util.Set; 49 import java.util.function.Function; 50 51 import jdk.internal.loader.BootLoader; 52 import jdk.internal.loader.BuiltinClassLoader; 53 import jdk.internal.misc.SharedSecrets; 54 import jdk.internal.perf.PerfCounter; 55 56 /** 57 * Initializes/boots the module system. 58 * 59 * The {@link #boot() boot} method is called early in the startup to initialize 60 * the module system. In summary, the boot method creates a Configuration by 61 * resolving a set of module names specified via the launcher (or equivalent) 62 * -m and --add-modules options. The modules are located on a module path that 63 * is constructed from the upgrade module path, system modules, and application 64 * module path. The Configuration is instantiated as the boot Layer with each 65 * module in the the configuration defined to one of the built-in class loaders. 66 */ 67 68 public final class ModuleBootstrap { 69 private ModuleBootstrap() { } 70 71 private static final String JAVA_BASE = "java.base"; 72 73 private static final String JAVA_SE = "java.se"; 74 75 // the token for "all default modules" 76 private static final String ALL_DEFAULT = "ALL-DEFAULT"; 77 78 // the token for "all unnamed modules" 79 private static final String ALL_UNNAMED = "ALL-UNNAMED"; 80 81 // the token for "all system modules" 82 private static final String ALL_SYSTEM = "ALL-SYSTEM"; 83 84 // the token for "all modules on the module path" 85 private static final String ALL_MODULE_PATH = "ALL-MODULE-PATH"; 86 87 // The ModulePatcher for the initial configuration 88 private static final ModulePatcher patcher = initModulePatcher(); 89 90 // ModuleFinder for the initial configuration 91 private static ModuleFinder initialFinder; 92 93 /** 94 * Returns the ModulePatcher for the initial configuration. 95 */ 96 public static ModulePatcher patcher() { 97 return patcher; 98 } 99 100 /** 101 * Returns the ModuleFinder for the initial configuration 102 */ 103 public static ModuleFinder finder() { 104 assert initialFinder != null; 105 return initialFinder; 106 } 107 108 /** 109 * Initialize the module system, returning the boot Layer. 110 * 111 * @see java.lang.System#initPhase2() 112 */ 113 public static Layer boot() { 114 115 long t0 = System.nanoTime(); 116 117 // system modules (may be patched) 118 ModuleFinder systemModules = ModuleFinder.ofSystem(); 119 120 PerfCounters.systemModulesTime.addElapsedTimeFrom(t0); 121 122 123 long t1 = System.nanoTime(); 124 125 // Once we have the system modules then we define the base module to 126 // the VM. We do this here so that java.base is defined as early as 127 // possible and also that resources in the base module can be located 128 // for error messages that may happen from here on. 129 ModuleReference base = systemModules.find(JAVA_BASE).orElse(null); 130 if (base == null) 131 throw new InternalError(JAVA_BASE + " not found"); 132 URI baseUri = base.location().orElse(null); 133 if (baseUri == null) 134 throw new InternalError(JAVA_BASE + " does not have a location"); 135 BootLoader.loadModule(base); 136 Modules.defineModule(null, base.descriptor(), baseUri); 137 138 PerfCounters.defineBaseTime.addElapsedTimeFrom(t1); 139 140 141 long t2 = System.nanoTime(); 142 143 // --upgrade-module-path option specified to launcher 144 ModuleFinder upgradeModulePath 145 = createModulePathFinder("jdk.module.upgrade.path"); 146 if (upgradeModulePath != null) 147 systemModules = ModuleFinder.compose(upgradeModulePath, systemModules); 148 149 // --module-path option specified to the launcher 150 ModuleFinder appModulePath = createModulePathFinder("jdk.module.path"); 151 152 // The module finder: [--upgrade-module-path] system [--module-path] 153 ModuleFinder finder = systemModules; 154 if (appModulePath != null) 155 finder = ModuleFinder.compose(finder, appModulePath); 156 157 // The root modules to resolve 158 Set<String> roots = new HashSet<>(); 159 160 // launcher -m option to specify the main/initial module 161 String mainModule = System.getProperty("jdk.module.main"); 162 if (mainModule != null) 163 roots.add(mainModule); 164 165 // additional module(s) specified by --add-modules 166 boolean addAllDefaultModules = false; 167 boolean addAllSystemModules = false; 168 boolean addAllApplicationModules = false; 169 for (String mod: getExtraAddModules()) { 170 switch (mod) { 171 case ALL_DEFAULT: 172 addAllDefaultModules = true; 173 break; 174 case ALL_SYSTEM: 175 addAllSystemModules = true; 176 break; 177 case ALL_MODULE_PATH: 178 addAllApplicationModules = true; 179 break; 180 default : 181 roots.add(mod); 182 } 183 } 184 185 // --limit-modules 186 String propValue = getAndRemoveProperty("jdk.module.limitmods"); 187 if (propValue != null) { 188 Set<String> mods = new HashSet<>(); 189 for (String mod: propValue.split(",")) { 190 mods.add(mod); 191 } 192 finder = limitFinder(finder, mods, roots); 193 } 194 195 // If there is no initial module specified then assume that the initial 196 // module is the unnamed module of the application class loader. This 197 // is implemented by resolving "java.se" and all (non-java.*) modules 198 // that export an API. If "java.se" is not observable then all java.* 199 // modules are resolved. Modules that have the DO_NOT_RESOLVE_BY_DEFAULT 200 // bit set in their ModuleResolution attribute flags are excluded from 201 // the default set of roots. 202 if (mainModule == null || addAllDefaultModules) { 203 boolean hasJava = false; 204 if (systemModules.find(JAVA_SE).isPresent()) { 205 // java.se is a system module 206 if (finder == systemModules || finder.find(JAVA_SE).isPresent()) { 207 // java.se is observable 208 hasJava = true; 209 roots.add(JAVA_SE); 210 } 211 } 212 213 for (ModuleReference mref : systemModules.findAll()) { 214 String mn = mref.descriptor().name(); 215 if (hasJava && mn.startsWith("java.")) 216 continue; 217 218 if (ModuleResolution.doNotResolveByDefault(mref)) 219 continue; 220 221 // add as root if observable and exports at least one package 222 if ((finder == systemModules || finder.find(mn).isPresent())) { 223 ModuleDescriptor descriptor = mref.descriptor(); 224 for (ModuleDescriptor.Exports e : descriptor.exports()) { 225 if (!e.isQualified()) { 226 roots.add(mn); 227 break; 228 } 229 } 230 } 231 } 232 } 233 234 // If `--add-modules ALL-SYSTEM` is specified then all observable system 235 // modules will be resolved. 236 if (addAllSystemModules) { 237 ModuleFinder f = finder; // observable modules 238 systemModules.findAll() 239 .stream() 240 .filter(mref -> !ModuleResolution.doNotResolveByDefault(mref)) 241 .map(ModuleReference::descriptor) 242 .map(ModuleDescriptor::name) 243 .filter(mn -> f.find(mn).isPresent()) // observable 244 .forEach(mn -> roots.add(mn)); 245 } 246 247 // If `--add-modules ALL-MODULE-PATH` is specified then all observable 248 // modules on the application module path will be resolved. 249 if (appModulePath != null && addAllApplicationModules) { 250 ModuleFinder f = finder; // observable modules 251 appModulePath.findAll() 252 .stream() 253 .map(ModuleReference::descriptor) 254 .map(ModuleDescriptor::name) 255 .filter(mn -> f.find(mn).isPresent()) // observable 256 .forEach(mn -> roots.add(mn)); 257 } 258 259 PerfCounters.optionsAndRootsTime.addElapsedTimeFrom(t2); 260 261 262 long t3 = System.nanoTime(); 263 264 // determine if post resolution checks are needed 265 boolean needPostResolutionChecks = true; 266 if (baseUri.getScheme().equals("jrt") // toLowerCase not needed here 267 && (upgradeModulePath == null) 268 && (appModulePath == null) 269 && (patcher.isEmpty())) { 270 needPostResolutionChecks = false; 271 } 272 273 PrintStream traceOutput = null; 274 if (Boolean.getBoolean("jdk.launcher.traceResolver")) 275 traceOutput = System.out; 276 277 // run the resolver to create the configuration 278 Configuration cf = SharedSecrets.getJavaLangModuleAccess() 279 .resolveAndBind(finder, 280 roots, 281 needPostResolutionChecks, 282 traceOutput); 283 284 // time to create configuration 285 PerfCounters.resolveTime.addElapsedTimeFrom(t3); 286 287 // check module names and incubating status 288 checkModuleNamesAndStatus(cf); 289 290 // mapping of modules to class loaders 291 Function<String, ClassLoader> clf = ModuleLoaderMap.mappingFunction(cf); 292 293 // check that all modules to be mapped to the boot loader will be 294 // loaded from the runtime image 295 if (needPostResolutionChecks) { 296 for (ResolvedModule resolvedModule : cf.modules()) { 297 ModuleReference mref = resolvedModule.reference(); 298 String name = mref.descriptor().name(); 299 ClassLoader cl = clf.apply(name); 300 if (cl == null) { 301 302 if (upgradeModulePath != null 303 && upgradeModulePath.find(name).isPresent()) 304 fail(name + ": cannot be loaded from upgrade module path"); 305 306 if (!systemModules.find(name).isPresent()) 307 fail(name + ": cannot be loaded from application module path"); 308 } 309 } 310 311 // check if module specified in --patch-module is present 312 for (String mn: patcher.patchedModules()) { 313 if (!cf.findModule(mn).isPresent()) { 314 warnUnknownModule(PATCH_MODULE, mn); 315 } 316 } 317 } 318 319 // if needed check that there are no split packages in the set of 320 // resolved modules for the boot layer 321 if (SystemModules.hasSplitPackages() || needPostResolutionChecks) { 322 Map<String, String> packageToModule = new HashMap<>(); 323 for (ResolvedModule resolvedModule : cf.modules()) { 324 ModuleDescriptor descriptor = 325 resolvedModule.reference().descriptor(); 326 String name = descriptor.name(); 327 for (String p : descriptor.packages()) { 328 String other = packageToModule.putIfAbsent(p, name); 329 if (other != null) { 330 String msg = "Package " + p + " in both module " 331 + name + " and module " + other; 332 throw new LayerInstantiationException(msg); 333 } 334 } 335 } 336 } 337 338 long t4 = System.nanoTime(); 339 340 // define modules to VM/runtime 341 Layer bootLayer = Layer.empty().defineModules(cf, clf); 342 343 PerfCounters.layerCreateTime.addElapsedTimeFrom(t4); 344 345 346 long t5 = System.nanoTime(); 347 348 // define the module to its class loader, except java.base 349 for (ResolvedModule resolvedModule : cf.modules()) { 350 ModuleReference mref = resolvedModule.reference(); 351 String name = mref.descriptor().name(); 352 ClassLoader cl = clf.apply(name); 353 if (cl == null) { 354 if (!name.equals(JAVA_BASE)) BootLoader.loadModule(mref); 355 } else { 356 ((BuiltinClassLoader)cl).loadModule(mref); 357 } 358 } 359 360 PerfCounters.loadModulesTime.addElapsedTimeFrom(t5); 361 362 363 // --add-reads, --add-exports/--add-opens 364 addExtraReads(bootLayer); 365 addExtraExportsAndOpens(bootLayer); 366 367 // total time to initialize 368 PerfCounters.bootstrapTime.addElapsedTimeFrom(t0); 369 370 // remember the ModuleFinder 371 initialFinder = finder; 372 373 return bootLayer; 374 } 375 376 /** 377 * Returns a ModuleFinder that limits observability to the given root 378 * modules, their transitive dependences, plus a set of other modules. 379 */ 380 private static ModuleFinder limitFinder(ModuleFinder finder, 381 Set<String> roots, 382 Set<String> otherMods) 383 { 384 // resolve all root modules 385 Configuration cf = Configuration.empty().resolve(finder, 386 ModuleFinder.of(), 387 roots); 388 389 // module name -> reference 390 Map<String, ModuleReference> map = new HashMap<>(); 391 392 // root modules and their transitive dependences 393 cf.modules().stream() 394 .map(ResolvedModule::reference) 395 .forEach(mref -> map.put(mref.descriptor().name(), mref)); 396 397 // additional modules 398 otherMods.stream() 399 .map(finder::find) 400 .flatMap(Optional::stream) 401 .forEach(mref -> map.putIfAbsent(mref.descriptor().name(), mref)); 402 403 // set of modules that are observable 404 Set<ModuleReference> mrefs = new HashSet<>(map.values()); 405 406 return new ModuleFinder() { 407 @Override 408 public Optional<ModuleReference> find(String name) { 409 return Optional.ofNullable(map.get(name)); 410 } 411 @Override 412 public Set<ModuleReference> findAll() { 413 return mrefs; 414 } 415 }; 416 } 417 418 /** 419 * Creates a finder from the module path that is the value of the given 420 * system property and optionally patched by --patch-module 421 */ 422 private static ModuleFinder createModulePathFinder(String prop) { 423 String s = System.getProperty(prop); 424 if (s == null) { 425 return null; 426 } else { 427 String[] dirs = s.split(File.pathSeparator); 428 Path[] paths = new Path[dirs.length]; 429 int i = 0; 430 for (String dir: dirs) { 431 paths[i++] = Paths.get(dir); 432 } 433 return ModulePath.of(patcher, paths); 434 } 435 } 436 437 438 /** 439 * Initialize the module patcher for the initial configuration passed on the 440 * value of the --patch-module options. 441 */ 442 private static ModulePatcher initModulePatcher() { 443 Map<String, List<String>> map = decode("jdk.module.patch.", 444 File.pathSeparator, 445 false); 446 return new ModulePatcher(map); 447 } 448 449 /** 450 * Returns the set of module names specified via --add-modules options 451 * on the command line 452 */ 453 private static Set<String> getExtraAddModules() { 454 String prefix = "jdk.module.addmods."; 455 int index = 0; 456 457 // the system property is removed after decoding 458 String value = getAndRemoveProperty(prefix + index); 459 if (value == null) { 460 return Collections.emptySet(); 461 } 462 463 Set<String> modules = new HashSet<>(); 464 while (value != null) { 465 for (String s : value.split(",")) { 466 if (s.length() > 0) modules.add(s); 467 } 468 index++; 469 value = getAndRemoveProperty(prefix + index); 470 } 471 472 return modules; 473 } 474 475 /** 476 * Process the --add-reads options to add any additional read edges that 477 * are specified on the command-line. 478 */ 479 private static void addExtraReads(Layer bootLayer) { 480 481 // decode the command line options 482 Map<String, List<String>> map = decode("jdk.module.addreads."); 483 if (map.isEmpty()) 484 return; 485 486 for (Map.Entry<String, List<String>> e : map.entrySet()) { 487 488 // the key is $MODULE 489 String mn = e.getKey(); 490 Optional<Module> om = bootLayer.findModule(mn); 491 if (!om.isPresent()) { 492 warnUnknownModule(ADD_READS, mn); 493 continue; 494 } 495 Module m = om.get(); 496 497 // the value is the set of other modules (by name) 498 for (String name : e.getValue()) { 499 if (ALL_UNNAMED.equals(name)) { 500 Modules.addReadsAllUnnamed(m); 501 } else { 502 om = bootLayer.findModule(name); 503 if (om.isPresent()) { 504 Modules.addReads(m, om.get()); 505 } else { 506 warnUnknownModule(ADD_READS, name); 507 } 508 } 509 } 510 } 511 } 512 513 /** 514 * Process the --add-exports and --add-opens options to export/open 515 * additional packages specified on the command-line. 516 */ 517 private static void addExtraExportsAndOpens(Layer bootLayer) { 518 IllegalAccessLogger.Builder builder = new IllegalAccessLogger.Builder(); 519 520 // --add-exports 521 String prefix = "jdk.module.addexports."; 522 Map<String, List<String>> extraExports = decode(prefix); 523 if (!extraExports.isEmpty()) { 524 addExtraExportsOrOpens(bootLayer, extraExports, false, builder); 525 } 526 527 // --add-opens 528 prefix = "jdk.module.addopens."; 529 Map<String, List<String>> extraOpens = decode(prefix); 530 if (!extraOpens.isEmpty()) { 531 addExtraExportsOrOpens(bootLayer, extraOpens, true, builder); 532 } 533 534 // --permit-illegal-access 535 if (getAndRemoveProperty("jdk.module.permitIllegalAccess") != null) { 536 warn("--permit-illegal-access will be removed in the next major release"); 537 bootLayer.modules().stream().forEach(m -> { 538 m.getDescriptor() 539 .packages() 540 .stream() 541 .filter(pn -> !m.isOpen(pn)) 542 .forEach(pn -> { 543 builder.logAccessToOpenPackage(m, pn, "--permit-illegal-access"); 544 Modules.addOpensToAllUnnamed(m, pn); 545 }); 546 }); 547 } 548 549 IllegalAccessLogger.setIllegalAccessLogger(builder.build()); 550 } 551 552 private static void addExtraExportsOrOpens(Layer bootLayer, 553 Map<String, List<String>> map, 554 boolean opens, 555 IllegalAccessLogger.Builder builder) 556 { 557 String option = opens ? ADD_OPENS : ADD_EXPORTS; 558 for (Map.Entry<String, List<String>> e : map.entrySet()) { 559 560 // the key is $MODULE/$PACKAGE 561 String key = e.getKey(); 562 String[] s = key.split("/"); 563 if (s.length != 2) 564 fail(unableToParse(option, "<module>/<package>", key)); 565 566 String mn = s[0]; 567 String pn = s[1]; 568 if (mn.isEmpty() || pn.isEmpty()) 569 fail(unableToParse(option, "<module>/<package>", key)); 570 571 // The exporting module is in the boot layer 572 Module m; 573 Optional<Module> om = bootLayer.findModule(mn); 574 if (!om.isPresent()) { 575 warnUnknownModule(option, mn); 576 continue; 577 } 578 579 m = om.get(); 580 581 if (!m.getDescriptor().packages().contains(pn)) { 582 warn("package " + pn + " not in " + mn); 583 continue; 584 } 585 586 // the value is the set of modules to export to (by name) 587 for (String name : e.getValue()) { 588 boolean allUnnamed = false; 589 Module other = null; 590 if (ALL_UNNAMED.equals(name)) { 591 allUnnamed = true; 592 } else { 593 om = bootLayer.findModule(name); 594 if (om.isPresent()) { 595 other = om.get(); 596 } else { 597 warnUnknownModule(option, name); 598 continue; 599 } 600 } 601 if (allUnnamed) { 602 if (opens) { 603 builder.logAccessToOpenPackage(m, pn, option); 604 Modules.addOpensToAllUnnamed(m, pn); 605 } else { 606 builder.logAccessToExportedPackage(m, pn, option); 607 Modules.addExportsToAllUnnamed(m, pn); 608 } 609 } else { 610 if (opens) { 611 Modules.addOpens(m, pn, other); 612 } else { 613 Modules.addExports(m, pn, other); 614 } 615 } 616 617 } 618 } 619 } 620 621 /** 622 * Decodes the values of --add-reads, -add-exports, --add-opens or 623 * --patch-modules options that are encoded in system properties. 624 * 625 * @param prefix the system property prefix 626 * @praam regex the regex for splitting the RHS of the option value 627 */ 628 private static Map<String, List<String>> decode(String prefix, 629 String regex, 630 boolean allowDuplicates) { 631 int index = 0; 632 // the system property is removed after decoding 633 String value = getAndRemoveProperty(prefix + index); 634 if (value == null) 635 return Collections.emptyMap(); 636 637 Map<String, List<String>> map = new HashMap<>(); 638 639 while (value != null) { 640 641 int pos = value.indexOf('='); 642 if (pos == -1) 643 fail(unableToParse(option(prefix), "<module>=<value>", value)); 644 if (pos == 0) 645 fail(unableToParse(option(prefix), "<module>=<value>", value)); 646 647 // key is <module> or <module>/<package> 648 String key = value.substring(0, pos); 649 650 String rhs = value.substring(pos+1); 651 if (rhs.isEmpty()) 652 fail(unableToParse(option(prefix), "<module>=<value>", value)); 653 654 // value is <module>(,<module>)* or <file>(<pathsep><file>)* 655 if (!allowDuplicates && map.containsKey(key)) 656 fail(key + " specified more than once to " + option(prefix)); 657 List<String> values = map.computeIfAbsent(key, k -> new ArrayList<>()); 658 int ntargets = 0; 659 for (String s : rhs.split(regex)) { 660 if (s.length() > 0) { 661 values.add(s); 662 ntargets++; 663 } 664 } 665 if (ntargets == 0) 666 fail("Target must be specified: " + option(prefix) + " " + value); 667 668 index++; 669 value = getAndRemoveProperty(prefix + index); 670 } 671 672 return map; 673 } 674 675 /** 676 * Decodes the values of --add-reads, -add-exports or --add-opens 677 * which use the "," to separate the RHS of the option value. 678 */ 679 private static Map<String, List<String>> decode(String prefix) { 680 return decode(prefix, ",", true); 681 } 682 683 /** 684 * Gets and remove the named system property 685 */ 686 private static String getAndRemoveProperty(String key) { 687 return (String)System.getProperties().remove(key); 688 } 689 690 /** 691 * Checks the names and resolution bit of each module in the configuration, 692 * emitting warnings if needed. 693 */ 694 private static void checkModuleNamesAndStatus(Configuration cf) { 695 String incubating = null; 696 for (ResolvedModule rm : cf.modules()) { 697 ModuleReference mref = rm.reference(); 698 String mn = mref.descriptor().name(); 699 700 // emit warning if the WARN_INCUBATING module resolution bit set 701 if (ModuleResolution.hasIncubatingWarning(mref)) { 702 if (incubating == null) { 703 incubating = mn; 704 } else { 705 incubating += ", " + mn; 706 } 707 } 708 } 709 if (incubating != null) 710 warn("Using incubator modules: " + incubating); 711 } 712 713 /** 714 * Throws a RuntimeException with the given message 715 */ 716 static void fail(String m) { 717 throw new RuntimeException(m); 718 } 719 720 static void warn(String m) { 721 System.err.println("WARNING: " + m); 722 } 723 724 static void warnUnknownModule(String option, String mn) { 725 warn("Unknown module: " + mn + " specified to " + option); 726 } 727 728 static String unableToParse(String option, String text, String value) { 729 return "Unable to parse " + option + " " + text + ": " + value; 730 } 731 732 private static final String ADD_MODULES = "--add-modules"; 733 private static final String ADD_EXPORTS = "--add-exports"; 734 private static final String ADD_OPENS = "--add-opens"; 735 private static final String ADD_READS = "--add-reads"; 736 private static final String PATCH_MODULE = "--patch-module"; 737 738 739 /* 740 * Returns the command-line option name corresponds to the specified 741 * system property prefix. 742 */ 743 static String option(String prefix) { 744 switch (prefix) { 745 case "jdk.module.addexports.": 746 return ADD_EXPORTS; 747 case "jdk.module.addopens.": 748 return ADD_OPENS; 749 case "jdk.module.addreads.": 750 return ADD_READS; 751 case "jdk.module.patch.": 752 return PATCH_MODULE; 753 case "jdk.module.addmods.": 754 return ADD_MODULES; 755 default: 756 throw new IllegalArgumentException(prefix); 757 } 758 } 759 760 static class PerfCounters { 761 762 static PerfCounter systemModulesTime 763 = PerfCounter.newPerfCounter("jdk.module.bootstrap.systemModulesTime"); 764 static PerfCounter defineBaseTime 765 = PerfCounter.newPerfCounter("jdk.module.bootstrap.defineBaseTime"); 766 static PerfCounter optionsAndRootsTime 767 = PerfCounter.newPerfCounter("jdk.module.bootstrap.optionsAndRootsTime"); 768 static PerfCounter resolveTime 769 = PerfCounter.newPerfCounter("jdk.module.bootstrap.resolveTime"); 770 static PerfCounter layerCreateTime 771 = PerfCounter.newPerfCounter("jdk.module.bootstrap.layerCreateTime"); 772 static PerfCounter loadModulesTime 773 = PerfCounter.newPerfCounter("jdk.module.bootstrap.loadModulesTime"); 774 static PerfCounter bootstrapTime 775 = PerfCounter.newPerfCounter("jdk.module.bootstrap.totalTime"); 776 } 777 }