xpcom/build/nsXPComInit.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* vim:set ts=4 sw=4 sts=4 ci et: */
   3 /* ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is mozilla.org code.
  17  *
  18  * The Initial Developer of the Original Code is
  19  * Netscape Communications Corporation.
  20  * Portions created by the Initial Developer are Copyright (C) 1998
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Benjamin Smedberg <benjamin@smedbergs.us>
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either of the GNU General Public License Version 2 or later (the "GPL"),
  28  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29  * in which case the provisions of the GPL or the LGPL are applicable instead
  30  * of those above. If you wish to allow use of your version of this file only
  31  * under the terms of either the GPL or the LGPL, and not to allow others to
  32  * use your version of this file under the terms of the MPL, indicate your
  33  * decision by deleting the provisions above and replace them with the notice
  34  * and other provisions required by the GPL or the LGPL. If you do not delete
  35  * the provisions above, a recipient may use your version of this file under
  36  * the terms of any one of the MPL, the GPL or the LGPL.
  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40 #ifdef MOZ_IPC
  41 #include "base/basictypes.h"
  42 #endif
  43
  44 #include "mozilla/XPCOM.h"
  45 #include "nsXULAppAPI.h"
  46
  47 #include "nsXPCOMPrivate.h"
  48 #include "nsXPCOMCIDInternal.h"
  49
  50 #include "nsStaticComponents.h"
  51 #include "prlink.h"
  52
  53 #include "nsObserverList.h"
  54 #include "nsObserverService.h"
  55 #include "nsProperties.h"
  56 #include "nsPersistentProperties.h"
  57 #include "nsScriptableInputStream.h"
  58 #include "nsBinaryStream.h"
  59 #include "nsStorageStream.h"
  60 #include "nsPipe.h"
  61
  62 #include "nsMemoryImpl.h"
  63 #include "nsDebugImpl.h"
  64 #include "nsTraceRefcntImpl.h"
  65 #include "nsErrorService.h"
  66 #include "nsByteBuffer.h"
  67
  68 #include "nsSupportsArray.h"
  69 #include "nsArray.h"
  70 #include "nsINIParserImpl.h"
  71 #include "nsSupportsPrimitives.h"
  72 #include "nsConsoleService.h"
  73 #include "nsExceptionService.h"
  74
  75 #include "nsComponentManager.h"
  76 #include "nsCategoryManagerUtils.h"
  77 #include "nsIServiceManager.h"
  78
  79 #include "nsThreadManager.h"
  80 #include "nsThreadPool.h"
  81
  82 #include "nsIProxyObjectManager.h"
  83 #include "nsProxyEventPrivate.h"  // access to the impl of nsProxyObjectManager for the generic factory registration.
  84
  85 #include "xptinfo.h"
  86 #include "nsIInterfaceInfoManager.h"
  87 #include "xptiprivate.h"
  88
  89 #include "nsTimerImpl.h"
  90 #include "TimerThread.h"
  91
  92 #include "nsThread.h"
  93 #include "nsProcess.h"
  94 #include "nsEnvironment.h"
  95 #include "nsVersionComparatorImpl.h"
  96
  97 #include "nsILocalFile.h"
  98 #include "nsLocalFile.h"
  99 #if defined(XP_UNIX) || defined(XP_OS2)
 100 #include "nsNativeCharsetUtils.h"
 101 #endif
 102 #include "nsDirectoryService.h"
 103 #include "nsDirectoryServiceDefs.h"
 104 #include "nsCategoryManager.h"
 105 #include "nsICategoryManager.h"
 106 #include "nsMultiplexInputStream.h"
 107
 108 #include "nsStringStream.h"
 109 extern nsresult nsStringInputStreamConstructor(nsISupports *, REFNSIID, void **);
 110
 111 #include "nsFastLoadService.h"
 112
 113 #include "nsAtomService.h"
 114 #include "nsAtomTable.h"
 115 #include "nsTraceRefcnt.h"
 116 #include "nsTimelineService.h"
 117
 118 #include "nsHashPropertyBag.h"
 119
 120 #include "nsUnicharInputStream.h"
 121 #include "nsVariant.h"
 122
 123 #include "nsUUIDGenerator.h"
 124
 125 #include "nsIOUtil.h"
 126
 127 #include "nsRecyclingAllocator.h"
 128
 129 #include "SpecialSystemDirectory.h"
 130
 131 #if defined(XP_WIN)
 132 #include "nsWindowsRegKey.h"
 133 #endif
 134
 135 #ifdef XP_MACOSX
 136 #include "nsMacUtilsImpl.h"
 137 #endif
 138
 139 #include "nsSystemInfo.h"
 140 #include "nsMemoryReporterManager.h"
 141
 142 #include <locale.h>
 143 #include "mozilla/Services.h"
 144 #include "mozilla/FunctionTimer.h"
 145 #include "mozilla/Omnijar.h"
 146
 147 #include "nsChromeRegistry.h"
 148 #include "nsChromeProtocolHandler.h"
 149
 150 #ifdef MOZ_ENABLE_LIBXUL
 151 #include "mozilla/scache/StartupCache.h"
 152 #endif
 153
 154 #ifdef MOZ_IPC
 155 #include "base/at_exit.h"
 156 #include "base/command_line.h"
 157 #include "base/message_loop.h"
 158
 159 #include "mozilla/ipc/BrowserProcessSubThread.h"
 160
 161 using base::AtExitManager;
 162 using mozilla::ipc::BrowserProcessSubThread;
 163
 164 namespace {
 165
 166 static AtExitManager* sExitManager;
 167 static MessageLoop* sMessageLoop;
 168 static bool sCommandLineWasInitialized;
 169 static BrowserProcessSubThread* sIOThread;
 170
 171 } /* anonymous namespace */
 172 #endif
 173
 174 // Registry Factory creation function defined in nsRegistry.cpp
 175 // We hook into this function locally to create and register the registry
 176 // Since noone outside xpcom needs to know about this and nsRegistry.cpp
 177 // does not have a local include file, we are putting this definition
 178 // here rather than in nsIRegistry.h
 179 extern nsresult NS_RegistryGetFactory(nsIFactory** aFactory);
 180 extern nsresult NS_CategoryManagerGetFactory( nsIFactory** );
 181
 182 #ifdef DEBUG
 183 extern void _FreeAutoLockStatics();
 184 #endif
 185
 186 NS_GENERIC_FACTORY_CONSTRUCTOR(nsProcess)
 187
 188 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsIDImpl)
 189 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsStringImpl)
 190 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsCStringImpl)
 191 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRBoolImpl)
 192 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint8Impl)
 193 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint16Impl)
 194 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint32Impl)
 195 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint64Impl)
 196 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRTimeImpl)
 197 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsCharImpl)
 198 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRInt16Impl)
 199 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRInt32Impl)
 200 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRInt64Impl)
 201 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsFloatImpl)
 202 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsDoubleImpl)
 203 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsVoidImpl)
 204 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsInterfacePointerImpl)
 205
 206 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsConsoleService, Init)
 207 NS_GENERIC_FACTORY_CONSTRUCTOR(nsAtomService)
 208 NS_GENERIC_FACTORY_CONSTRUCTOR(nsExceptionService)
 209 NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimerImpl)
 210 NS_GENERIC_FACTORY_CONSTRUCTOR(nsBinaryOutputStream)
 211 NS_GENERIC_FACTORY_CONSTRUCTOR(nsBinaryInputStream)
 212 NS_GENERIC_FACTORY_CONSTRUCTOR(nsStorageStream)
 213 NS_GENERIC_FACTORY_CONSTRUCTOR(nsVersionComparatorImpl)
 214
 215 NS_GENERIC_FACTORY_CONSTRUCTOR(nsVariant)
 216
 217 NS_GENERIC_FACTORY_CONSTRUCTOR(nsRecyclingAllocatorImpl)
 218
 219 #ifdef MOZ_TIMELINE
 220 NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimelineService)
 221 #endif
 222
 223 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsHashPropertyBag, Init)
 224
 225 NS_GENERIC_AGGREGATED_CONSTRUCTOR_INIT(nsProperties, Init)
 226
 227 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsUUIDGenerator, Init)
 228
 229 #ifdef XP_MACOSX
 230 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMacUtilsImpl)
 231 #endif
 232
 233 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsSystemInfo, Init)
 234
 235 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsMemoryReporterManager, Init)
 236
 237 NS_GENERIC_FACTORY_CONSTRUCTOR(nsIOUtil)
 238
 239 static nsresult
 240 nsThreadManagerGetSingleton(nsISupports* outer,
 241                             const nsIID& aIID,
 242                             void* *aInstancePtr)
 243 {
 244     NS_ASSERTION(aInstancePtr, "null outptr");
 245     NS_ENSURE_TRUE(!outer, NS_ERROR_NO_AGGREGATION);
 246
 247     return nsThreadManager::get()->QueryInterface(aIID, aInstancePtr);
 248 }
 249
 250 NS_GENERIC_FACTORY_CONSTRUCTOR(nsThreadPool)
 251
 252 static nsresult
 253 nsXPTIInterfaceInfoManagerGetSingleton(nsISupports* outer,
 254                                        const nsIID& aIID,
 255                                        void* *aInstancePtr)
 256 {
 257     NS_ASSERTION(aInstancePtr, "null outptr");
 258     NS_ENSURE_TRUE(!outer, NS_ERROR_NO_AGGREGATION);
 259
 260     nsCOMPtr<nsIInterfaceInfoManager> iim
 261         (xptiInterfaceInfoManager::GetSingleton());
 262     if (!iim)
 263         return NS_ERROR_FAILURE;
 264
 265     return iim->QueryInterface(aIID, aInstancePtr);
 266 }
 267
 268 nsComponentManagerImpl* nsComponentManagerImpl::gComponentManager = NULL;
 269 PRBool gXPCOMShuttingDown = PR_FALSE;
 270
 271 static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
 272 static NS_DEFINE_CID(kINIParserFactoryCID, NS_INIPARSERFACTORY_CID);
 273 static NS_DEFINE_CID(kSimpleUnicharStreamFactoryCID, NS_SIMPLE_UNICHAR_STREAM_FACTORY_CID);
 274
 275 NS_DEFINE_NAMED_CID(NS_CHROMEREGISTRY_CID);
 276 NS_DEFINE_NAMED_CID(NS_CHROMEPROTOCOLHANDLER_CID);
 277
 278 NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(nsChromeRegistry,
 279                                          nsChromeRegistry::GetSingleton)
 280 NS_GENERIC_FACTORY_CONSTRUCTOR(nsChromeProtocolHandler)
 281
 282 #define NS_PERSISTENTPROPERTIES_CID NS_IPERSISTENTPROPERTIES_CID /* sigh */
 283 #define NS_XPCOMPROXY_CID NS_PROXYEVENT_MANAGER_CID
 284
 285 static already_AddRefed<nsIFactory>
 286 CreateINIParserFactory(const mozilla::Module& module,
 287                        const mozilla::Module::CIDEntry& entry)
 288 {
 289     nsIFactory* f = new nsINIParserFactory();
 290     f->AddRef();
 291     return f;
 292 }
 293
 294 static already_AddRefed<nsIFactory>
 295 CreateUnicharStreamFactory(const mozilla::Module& module,
 296                            const mozilla::Module::CIDEntry& entry)
 297 {
 298     return nsSimpleUnicharStreamFactory::GetInstance();
 299 }
 300
 301 #define COMPONENT(NAME, Ctor) static NS_DEFINE_CID(kNS_##NAME##_CID, NS_##NAME##_CID);
 302 #include "XPCOMModule.inc"
 303 #undef COMPONENT
 304
 305 #define COMPONENT(NAME, Ctor) { &kNS_##NAME##_CID, false, NULL, Ctor },
 306 const mozilla::Module::CIDEntry kXPCOMCIDEntries[] = {
 307     { &kComponentManagerCID, true, NULL, nsComponentManagerImpl::Create },
 308     { &kINIParserFactoryCID, false, CreateINIParserFactory },
 309     { &kSimpleUnicharStreamFactoryCID, false, CreateUnicharStreamFactory },
 310 #include "XPCOMModule.inc"
 311     { &kNS_CHROMEREGISTRY_CID, false, NULL, nsChromeRegistryConstructor },
 312     { &kNS_CHROMEPROTOCOLHANDLER_CID, false, NULL, nsChromeProtocolHandlerConstructor },
 313     { NULL }
 314 };
 315 #undef COMPONENT
 316
 317 #define COMPONENT(NAME, Ctor) { NS_##NAME##_CONTRACTID, &kNS_##NAME##_CID },
 318 const mozilla::Module::ContractIDEntry kXPCOMContracts[] = {
 319 #include "XPCOMModule.inc"
 320     { NS_CHROMEREGISTRY_CONTRACTID, &kNS_CHROMEREGISTRY_CID },
 321     { NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "chrome", &kNS_CHROMEPROTOCOLHANDLER_CID },
 322     { NS_INIPARSERFACTORY_CONTRACTID, &kINIParserFactoryCID },
 323     { NULL }
 324 };
 325 #undef COMPONENT
 326
 327 const mozilla::Module kXPCOMModule = { mozilla::Module::kVersion, kXPCOMCIDEntries, kXPCOMContracts };
 328
 329 // gDebug will be freed during shutdown.
 330 static nsIDebug* gDebug = nsnull;
 331
 332 EXPORT_XPCOM_API(nsresult)
 333 NS_GetDebug(nsIDebug** result)
 334 {
 335     return nsDebugImpl::Create(nsnull,
 336                                NS_GET_IID(nsIDebug),
 337                                (void**) result);
 338 }
 339
 340 EXPORT_XPCOM_API(nsresult)
 341 NS_GetTraceRefcnt(nsITraceRefcnt** result)
 342 {
 343     return nsTraceRefcntImpl::Create(nsnull,
 344                                      NS_GET_IID(nsITraceRefcnt),
 345                                      (void**) result);
 346 }
 347
 348 EXPORT_XPCOM_API(nsresult)
 349 NS_InitXPCOM(nsIServiceManager* *result,
 350                              nsIFile* binDirectory)
 351 {
 352     return NS_InitXPCOM2(result, binDirectory, nsnull);
 353 }
 354
 355 EXPORT_XPCOM_API(nsresult)
 356 NS_InitXPCOM2(nsIServiceManager* *result,
 357               nsIFile* binDirectory,
 358               nsIDirectoryServiceProvider* appFileLocationProvider)
 359 {
 360     NS_TIME_FUNCTION;
 361
 362     nsresult rv = NS_OK;
 363
 364      // We are not shutting down
 365     gXPCOMShuttingDown = PR_FALSE;
 366
 367     NS_TIME_FUNCTION_MARK("Next: log init");
 368
 369     NS_LogInit();
 370
 371 #ifdef MOZ_IPC
 372     NS_TIME_FUNCTION_MARK("Next: IPC init");
 373
 374     // Set up chromium libs
 375     NS_ASSERTION(!sExitManager && !sMessageLoop, "Bad logic!");
 376
 377     if (!AtExitManager::AlreadyRegistered()) {
 378         sExitManager = new AtExitManager();
 379         NS_ENSURE_STATE(sExitManager);
 380     }
 381
 382     if (!MessageLoop::current()) {
 383         sMessageLoop = new MessageLoopForUI(MessageLoop::TYPE_MOZILLA_UI);
 384         NS_ENSURE_STATE(sMessageLoop);
 385     }
 386
 387     if (XRE_GetProcessType() == GeckoProcessType_Default &&
 388         !BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO)) {
 389         scoped_ptr<BrowserProcessSubThread> ioThread(
 390             new BrowserProcessSubThread(BrowserProcessSubThread::IO));
 391         NS_ENSURE_TRUE(ioThread.get(), NS_ERROR_OUT_OF_MEMORY);
 392
 393         base::Thread::Options options;
 394         options.message_loop_type = MessageLoop::TYPE_IO;
 395         NS_ENSURE_TRUE(ioThread->StartWithOptions(options), NS_ERROR_FAILURE);
 396
 397         sIOThread = ioThread.release();
 398     }
 399 #endif
 400
 401     NS_TIME_FUNCTION_MARK("Next: thread manager init");
 402
 403     // Establish the main thread here.
 404     rv = nsThreadManager::get()->Init();
 405     if (NS_FAILED(rv)) return rv;
 406
 407     NS_TIME_FUNCTION_MARK("Next: timer startup");
 408
 409     // Set up the timer globals/timer thread
 410     rv = nsTimerImpl::Startup();
 411     NS_ENSURE_SUCCESS(rv, rv);
 412
 413 #if !defined(WINCE) && !defined(ANDROID)
 414     NS_TIME_FUNCTION_MARK("Next: setlocale");
 415
 416     // If the locale hasn't already been setup by our embedder,
 417     // get us out of the "C" locale and into the system
 418     if (strcmp(setlocale(LC_ALL, NULL), "C") == 0)
 419         setlocale(LC_ALL, "");
 420 #endif
 421
 422 #if defined(XP_UNIX) || defined(XP_OS2)
 423     NS_TIME_FUNCTION_MARK("Next: startup native charset utils");
 424
 425     NS_StartupNativeCharsetUtils();
 426 #endif
 427
 428     NS_TIME_FUNCTION_MARK("Next: startup local file");
 429
 430     NS_StartupLocalFile();
 431
 432     StartupSpecialSystemDirectory();
 433
 434     rv = nsDirectoryService::RealInit();
 435     if (NS_FAILED(rv))
 436         return rv;
 437
 438     nsCOMPtr<nsIFile> xpcomLib;
 439
 440     PRBool value;
 441     if (binDirectory)
 442     {
 443         rv = binDirectory->IsDirectory(&value);
 444
 445         if (NS_SUCCEEDED(rv) && value) {
 446             nsDirectoryService::gService->Set(NS_XPCOM_INIT_CURRENT_PROCESS_DIR, binDirectory);
 447             binDirectory->Clone(getter_AddRefs(xpcomLib));
 448         }
 449     }
 450     else {
 451         nsDirectoryService::gService->Get(NS_XPCOM_CURRENT_PROCESS_DIR,
 452                                           NS_GET_IID(nsIFile),
 453                                           getter_AddRefs(xpcomLib));
 454     }
 455
 456     if (xpcomLib) {
 457         xpcomLib->AppendNative(nsDependentCString(XPCOM_DLL));
 458         nsDirectoryService::gService->Set(NS_XPCOM_LIBRARY_FILE, xpcomLib);
 459     }
 460
 461     if (appFileLocationProvider) {
 462         rv = nsDirectoryService::gService->RegisterProvider(appFileLocationProvider);
 463         if (NS_FAILED(rv)) return rv;
 464     }
 465
 466 #ifdef MOZ_OMNIJAR
 467     NS_TIME_FUNCTION_MARK("Next: Omnijar init");
 468
 469     if (!mozilla::OmnijarPath()) {
 470         nsCOMPtr<nsILocalFile> omnijar;
 471         nsCOMPtr<nsIFile> file;
 472
 473         rv = NS_ERROR_FAILURE;
 474         nsDirectoryService::gService->Get(NS_GRE_DIR,
 475                                           NS_GET_IID(nsIFile),
 476                                           getter_AddRefs(file));
 477         if (file)
 478             rv = file->Append(NS_LITERAL_STRING("omni.jar"));
 479         if (NS_SUCCEEDED(rv))
 480             omnijar = do_QueryInterface(file);
 481         if (NS_SUCCEEDED(rv))
 482             mozilla::SetOmnijar(omnijar);
 483     }
 484 #endif
 485
 486 #ifdef MOZ_IPC
 487     if ((sCommandLineWasInitialized = !CommandLine::IsInitialized())) {
 488         NS_TIME_FUNCTION_MARK("Next: IPC command line init");
 489
 490 #ifdef OS_WIN
 491         CommandLine::Init(0, nsnull);
 492 #else
 493         nsCOMPtr<nsIFile> binaryFile;
 494         nsDirectoryService::gService->Get(NS_XPCOM_CURRENT_PROCESS_DIR,
 495                                           NS_GET_IID(nsIFile),
 496                                           getter_AddRefs(binaryFile));
 497         NS_ENSURE_STATE(binaryFile);
 498
 499         rv = binaryFile->AppendNative(NS_LITERAL_CSTRING("nonexistent-executable"));
 500         NS_ENSURE_SUCCESS(rv, rv);
 501
 502         nsCString binaryPath;
 503         rv = binaryFile->GetNativePath(binaryPath);
 504         NS_ENSURE_SUCCESS(rv, rv);
 505
 506         static char const *const argv = { strdup(binaryPath.get()) };
 507         CommandLine::Init(1, &argv);
 508 #endif
 509     }
 510 #endif
 511
 512     NS_ASSERTION(nsComponentManagerImpl::gComponentManager == NULL, "CompMgr not null at init");
 513
 514     NS_TIME_FUNCTION_MARK("Next: component manager init");
 515
 516     // Create the Component/Service Manager
 517     nsComponentManagerImpl::gComponentManager = new nsComponentManagerImpl();
 518     NS_ADDREF(nsComponentManagerImpl::gComponentManager);
 519
 520     rv = nsCycleCollector_startup();
 521     if (NS_FAILED(rv)) return rv;
 522
 523     rv = nsComponentManagerImpl::gComponentManager->Init();
 524     if (NS_FAILED(rv))
 525     {
 526         NS_RELEASE(nsComponentManagerImpl::gComponentManager);
 527         return rv;
 528     }
 529
 530     if (result) {
 531         NS_ADDREF(*result = nsComponentManagerImpl::gComponentManager);
 532     }
 533
 534     NS_TIME_FUNCTION_MARK("Next: cycle collector startup");
 535
 536     NS_TIME_FUNCTION_MARK("Next: interface info manager init");
 537
 538     // The iimanager constructor searches and registers XPT files.
 539     // (We trigger the singleton's lazy construction here to make that happen.)
 540     (void) xptiInterfaceInfoManager::GetSingleton();
 541
 542     NS_TIME_FUNCTION_MARK("Next: register category providers");
 543
 544     // After autoreg, but before we actually instantiate any components,
 545     // add any services listed in the "xpcom-directory-providers" category
 546     // to the directory service.
 547     nsDirectoryService::gService->RegisterCategoryProviders();
 548
 549 #ifdef MOZ_ENABLE_LIBXUL
 550     mozilla::scache::StartupCache::GetSingleton();
 551 #endif
 552     NS_TIME_FUNCTION_MARK("Next: create services from category");
 553
 554     // Notify observers of xpcom autoregistration start
 555     NS_CreateServicesFromCategory(NS_XPCOM_STARTUP_CATEGORY,
 556                                   nsnull,
 557                                   NS_XPCOM_STARTUP_OBSERVER_ID);
 558
 559     return NS_OK;
 560 }
 561
 562
 563 //
 564 // NS_ShutdownXPCOM()
 565 //
 566 // The shutdown sequence for xpcom would be
 567 //
 568 // - Notify "xpcom-shutdown" for modules to release primary (root) references
 569 // - Shutdown XPCOM timers
 570 // - Notify "xpcom-shutdown-threads" for thread joins
 571 // - Shutdown the event queues
 572 // - Release the Global Service Manager
 573 //   - Release all service instances held by the global service manager
 574 //   - Release the Global Service Manager itself
 575 // - Release the Component Manager
 576 //   - Release all factories cached by the Component Manager
 577 //   - Notify module loaders to shut down
 578 //   - Unload Libraries
 579 //   - Release Contractid Cache held by Component Manager
 580 //   - Release dll abstraction held by Component Manager
 581 //   - Release the Registry held by Component Manager
 582 //   - Finally, release the component manager itself
 583 //
 584 EXPORT_XPCOM_API(nsresult)
 585 NS_ShutdownXPCOM(nsIServiceManager* servMgr)
 586 {
 587     return mozilla::ShutdownXPCOM(servMgr);
 588 }
 589
 590 namespace mozilla {
 591
 592 nsresult
 593 ShutdownXPCOM(nsIServiceManager* servMgr)
 594 {
 595     NS_ENSURE_STATE(NS_IsMainThread());
 596
 597     nsresult rv;
 598     nsCOMPtr<nsISimpleEnumerator> moduleLoaders;
 599
 600     // Notify observers of xpcom shutting down
 601     {
 602         // Block it so that the COMPtr will get deleted before we hit
 603         // servicemanager shutdown
 604
 605         nsCOMPtr<nsIThread> thread = do_GetCurrentThread();
 606         NS_ENSURE_STATE(thread);
 607
 608         nsRefPtr<nsObserverService> observerService;
 609         CallGetService("@mozilla.org/observer-service;1",
 610                        (nsObserverService**) getter_AddRefs(observerService));
 611
 612         if (observerService)
 613         {
 614             (void) observerService->
 615                 NotifyObservers(nsnull, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID,
 616                                 nsnull);
 617
 618             nsCOMPtr<nsIServiceManager> mgr;
 619             rv = NS_GetServiceManager(getter_AddRefs(mgr));
 620             if (NS_SUCCEEDED(rv))
 621             {
 622                 (void) observerService->
 623                     NotifyObservers(mgr, NS_XPCOM_SHUTDOWN_OBSERVER_ID,
 624                                     nsnull);
 625             }
 626         }
 627
 628         NS_ProcessPendingEvents(thread);
 629 #ifdef MOZ_ENABLE_LIBXUL
 630         mozilla::scache::StartupCache::DeleteSingleton();
 631 #endif
 632         if (observerService)
 633             (void) observerService->
 634                 NotifyObservers(nsnull, NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID,
 635                                 nsnull);
 636
 637         NS_ProcessPendingEvents(thread);
 638
 639         // Shutdown the timer thread and all timers that might still be alive before
 640         // shutting down the component manager
 641         nsTimerImpl::Shutdown();
 642
 643         NS_ProcessPendingEvents(thread);
 644
 645         // Shutdown all remaining threads.  This method does not return until
 646         // all threads created using the thread manager (with the exception of
 647         // the main thread) have exited.
 648         nsThreadManager::get()->Shutdown();
 649
 650         NS_ProcessPendingEvents(thread);
 651
 652         // We save the "xpcom-shutdown-loaders" observers to notify after
 653         // the observerservice is gone.
 654         if (observerService) {
 655             observerService->
 656                 EnumerateObservers(NS_XPCOM_SHUTDOWN_LOADERS_OBSERVER_ID,
 657                                    getter_AddRefs(moduleLoaders));
 658
 659             observerService->Shutdown();
 660         }
 661     }
 662
 663     // XPCOM is officially in shutdown mode NOW
 664     // Set this only after the observers have been notified as this
 665     // will cause servicemanager to become inaccessible.
 666     mozilla::services::Shutdown();
 667
 668 #ifdef DEBUG_dougt
 669     fprintf(stderr, "* * * * XPCOM shutdown. Access will be denied * * * * \n");
 670 #endif
 671     // We may have AddRef'd for the caller of NS_InitXPCOM, so release it
 672     // here again:
 673     NS_IF_RELEASE(servMgr);
 674
 675     // Shutdown global servicemanager
 676     if (nsComponentManagerImpl::gComponentManager) {
 677         nsComponentManagerImpl::gComponentManager->FreeServices();
 678     }
 679
 680     nsProxyObjectManager::Shutdown();
 681
 682     // Release the directory service
 683     NS_IF_RELEASE(nsDirectoryService::gService);
 684
 685     nsCycleCollector_shutdown();
 686
 687     if (moduleLoaders) {
 688         PRBool more;
 689         nsCOMPtr<nsISupports> el;
 690         while (NS_SUCCEEDED(moduleLoaders->HasMoreElements(&more)) &&
 691                more) {
 692             moduleLoaders->GetNext(getter_AddRefs(el));
 693
 694             // Don't worry about weak-reference observers here: there is
 695             // no reason for weak-ref observers to register for
 696             // xpcom-shutdown-loaders
 697
 698             nsCOMPtr<nsIObserver> obs(do_QueryInterface(el));
 699             if (obs)
 700                 (void) obs->Observe(nsnull,
 701                                     NS_XPCOM_SHUTDOWN_LOADERS_OBSERVER_ID,
 702                                     nsnull);
 703         }
 704
 705         moduleLoaders = nsnull;
 706     }
 707
 708     // Shutdown nsLocalFile string conversion
 709     NS_ShutdownLocalFile();
 710 #ifdef XP_UNIX
 711     NS_ShutdownNativeCharsetUtils();
 712 #endif
 713
 714     // Shutdown xpcom. This will release all loaders and cause others holding
 715     // a refcount to the component manager to release it.
 716     if (nsComponentManagerImpl::gComponentManager) {
 717         rv = (nsComponentManagerImpl::gComponentManager)->Shutdown();
 718         NS_ASSERTION(NS_SUCCEEDED(rv), "Component Manager shutdown failed.");
 719     } else
 720         NS_WARNING("Component Manager was never created ...");
 721
 722     // Release our own singletons
 723     // Do this _after_ shutting down the component manager, because the
 724     // JS component loader will use XPConnect to call nsIModule::canUnload,
 725     // and that will spin up the InterfaceInfoManager again -- bad mojo
 726     xptiInterfaceInfoManager::FreeInterfaceInfoManager();
 727
 728     // Finally, release the component manager last because it unloads the
 729     // libraries:
 730     if (nsComponentManagerImpl::gComponentManager) {
 731       nsrefcnt cnt;
 732       NS_RELEASE2(nsComponentManagerImpl::gComponentManager, cnt);
 733       NS_ASSERTION(cnt == 0, "Component Manager being held past XPCOM shutdown.");
 734     }
 735     nsComponentManagerImpl::gComponentManager = nsnull;
 736     nsCategoryManager::Destroy();
 737
 738 #ifdef DEBUG
 739     // FIXME BUG 456272: this should disappear
 740     _FreeAutoLockStatics();
 741 #endif
 742
 743     ShutdownSpecialSystemDirectory();
 744
 745     NS_PurgeAtomTable();
 746
 747     NS_IF_RELEASE(gDebug);
 748
 749 #ifdef MOZ_IPC
 750     if (sIOThread) {
 751         delete sIOThread;
 752         sIOThread = nsnull;
 753     }
 754     if (sMessageLoop) {
 755         delete sMessageLoop;
 756         sMessageLoop = nsnull;
 757     }
 758     if (sCommandLineWasInitialized) {
 759         CommandLine::Terminate();
 760         sCommandLineWasInitialized = false;
 761     }
 762     if (sExitManager) {
 763         delete sExitManager;
 764         sExitManager = nsnull;
 765     }
 766 #endif
 767
 768 #ifdef MOZ_OMNIJAR
 769     mozilla::SetOmnijar(nsnull);
 770 #endif
 771
 772     NS_LogTerm();
 773
 774     return NS_OK;
 775 }
 776
 777 } // namespace mozilla