The Tor Browser: xpcom/build/nsXPComInit.cpp@b8a032363ba2 (annotated)

xpcom/build/nsXPComInit.cpp@b8a032363ba2 (annotated)

xpcom/build/nsXPComInit.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* vim:set ts=4 sw=4 sts=4 ci et: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "base/basictypes.h"
 #include "mozilla/Atomics.h"
 #include "mozilla/Poison.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/XPCOM.h"
 #include "nsXULAppAPI.h"
 #include "nsXPCOMPrivate.h"
 #include "nsXPCOMCIDInternal.h"
 #include "mozilla/layers/ImageBridgeChild.h"
 #include "mozilla/layers/CompositorParent.h"
 #include "prlink.h"
 #include "nsCycleCollector.h"
 #include "nsObserverList.h"
 #include "nsObserverService.h"
 #include "nsProperties.h"
 #include "nsPersistentProperties.h"
 #include "nsScriptableInputStream.h"
 #include "nsBinaryStream.h"
 #include "nsStorageStream.h"
 #include "nsPipe.h"
 #include "nsScriptableBase64Encoder.h"
 #include "nsMemoryImpl.h"
 #include "nsDebugImpl.h"
 #include "nsTraceRefcnt.h"
 #include "nsErrorService.h"
 #include "nsSupportsArray.h"
 #include "nsArray.h"
 #include "nsINIParserImpl.h"
 #include "nsSupportsPrimitives.h"
 #include "nsConsoleService.h"
 #include "nsIJSRuntimeService.h"
 #include "nsComponentManager.h"
 #include "nsCategoryManagerUtils.h"
 #include "nsIServiceManager.h"
 #include "nsThreadManager.h"
 #include "nsThreadPool.h"
 #include "xptinfo.h"
 #include "nsIInterfaceInfoManager.h"
 #include "xptiprivate.h"
 #include "mozilla/XPTInterfaceInfoManager.h"
 #include "nsTimerImpl.h"
 #include "TimerThread.h"
 #include "nsThread.h"
 #include "nsProcess.h"
 #include "nsEnvironment.h"
 #include "nsVersionComparatorImpl.h"
 #include "nsIFile.h"
 #include "nsLocalFile.h"
 #if defined(XP_UNIX)
 #include "nsNativeCharsetUtils.h"
 #endif
 #include "nsDirectoryService.h"
 #include "nsDirectoryServiceDefs.h"
 #include "nsCategoryManager.h"
 #include "nsICategoryManager.h"
 #include "nsMultiplexInputStream.h"
 #include "nsStringStream.h"
 extern nsresult nsStringInputStreamConstructor(nsISupports *, REFNSIID, void **);
 #include "nsAtomService.h"
 #include "nsAtomTable.h"
 #include "nsISupportsImpl.h"
 #include "nsHashPropertyBag.h"
 #include "nsUnicharInputStream.h"
 #include "nsVariant.h"
 #include "nsUUIDGenerator.h"
 #include "nsIOUtil.h"
 #include "SpecialSystemDirectory.h"
 #if defined(XP_WIN)
 #include "nsWindowsRegKey.h"
 #endif
 #ifdef MOZ_WIDGET_COCOA
 #include "nsMacUtilsImpl.h"
 #endif
 #include "nsSystemInfo.h"
 #include "nsMemoryReporterManager.h"
 #include "nsMemoryInfoDumper.h"
 #include "nsSecurityConsoleMessage.h"
 #include "nsMessageLoop.h"
 #include "nsStatusReporterManager.h"
 #include <locale.h>
 #include "mozilla/Services.h"
 #include "mozilla/Omnijar.h"
 #include "mozilla/HangMonitor.h"
 #include "mozilla/Telemetry.h"
 #include "mozilla/BackgroundHangMonitor.h"
 #include "nsChromeRegistry.h"
 #include "nsChromeProtocolHandler.h"
 #include "mozilla/PoisonIOInterposer.h"
 #include "mozilla/LateWriteChecks.h"
 #include "mozilla/scache/StartupCache.h"
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "mozilla/ipc/BrowserProcessSubThread.h"
 #include "mozilla/AvailableMemoryTracker.h"
 #include "mozilla/ClearOnShutdown.h"
 #include "mozilla/SystemMemoryReporter.h"
 #ifdef MOZ_VISUAL_EVENT_TRACER
 #include "mozilla/VisualEventTracer.h"
 #endif
 #include "ogg/ogg.h"
 #if defined(MOZ_VPX) && !defined(MOZ_VPX_NO_MEM_REPORTING)
 #include "vpx_mem/vpx_mem.h"
 #endif
 #ifdef MOZ_WEBM
 #include "nestegg/nestegg.h"
 #endif
 #include "GeckoProfiler.h"
 #include "jsapi.h"
 using namespace mozilla;
 using base::AtExitManager;
 using mozilla::ipc::BrowserProcessSubThread;
 #ifdef MOZ_VISUAL_EVENT_TRACER
 using mozilla::eventtracer::VisualEventTracer;
 #endif
 namespace {
 static AtExitManager* sExitManager;
 static MessageLoop* sMessageLoop;
 static bool sCommandLineWasInitialized;
 static BrowserProcessSubThread* sIOThread;
 static BackgroundHangMonitor* sMainHangMonitor;
 } /* anonymous namespace */
 // Registry Factory creation function defined in nsRegistry.cpp
 // We hook into this function locally to create and register the registry
 // Since noone outside xpcom needs to know about this and nsRegistry.cpp
 // does not have a local include file, we are putting this definition
 // here rather than in nsIRegistry.h
 extern nsresult NS_RegistryGetFactory(nsIFactory** aFactory);
 extern nsresult NS_CategoryManagerGetFactory( nsIFactory** );
 #ifdef XP_WIN
 extern nsresult CreateAnonTempFileRemover();
 #endif
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsProcess)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsIDImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsStringImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsCStringImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRBoolImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint8Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint16Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint32Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRUint64Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRTimeImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsCharImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRInt16Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRInt32Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsPRInt64Impl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsFloatImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsDoubleImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsVoidImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsInterfacePointerImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsConsoleService, Init)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsAtomService)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimerImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsBinaryOutputStream)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsBinaryInputStream)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsStorageStream)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsVersionComparatorImpl)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsScriptableBase64Encoder)
 #ifdef MOZ_VISUAL_EVENT_TRACER
 NS_GENERIC_FACTORY_CONSTRUCTOR(VisualEventTracer)
 #endif
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsVariant)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsHashPropertyBag)
 NS_GENERIC_AGGREGATED_CONSTRUCTOR(nsProperties)
 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsUUIDGenerator, Init)
 #ifdef MOZ_WIDGET_COCOA
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMacUtilsImpl)
 #endif
 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsSystemInfo, Init)
 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsMemoryReporterManager, Init)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMemoryInfoDumper)
 NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsStatusReporterManager, Init)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsIOUtil)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSecurityConsoleMessage)
 static nsresult
 nsThreadManagerGetSingleton(nsISupports* outer,
                             const nsIID& aIID,
                             void* *aInstancePtr)
 {
     NS_ASSERTION(aInstancePtr, "null outptr");
     if (NS_WARN_IF(outer))
         return NS_ERROR_NO_AGGREGATION;
     return nsThreadManager::get()->QueryInterface(aIID, aInstancePtr);
 }
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsThreadPool)
 static nsresult
 nsXPTIInterfaceInfoManagerGetSingleton(nsISupports* outer,
                                        const nsIID& aIID,
                                        void* *aInstancePtr)
 {
     NS_ASSERTION(aInstancePtr, "null outptr");
     if (NS_WARN_IF(outer))
         return NS_ERROR_NO_AGGREGATION;
     nsCOMPtr<nsIInterfaceInfoManager> iim
         (XPTInterfaceInfoManager::GetSingleton());
     if (!iim)
         return NS_ERROR_FAILURE;
     return iim->QueryInterface(aIID, aInstancePtr);
 }
 nsComponentManagerImpl* nsComponentManagerImpl::gComponentManager = nullptr;
 bool gXPCOMShuttingDown = false;
 bool gXPCOMThreadsShutDown = false;
 static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
 static NS_DEFINE_CID(kINIParserFactoryCID, NS_INIPARSERFACTORY_CID);
 static NS_DEFINE_CID(kSimpleUnicharStreamFactoryCID, NS_SIMPLE_UNICHAR_STREAM_FACTORY_CID);
 NS_DEFINE_NAMED_CID(NS_CHROMEREGISTRY_CID);
 NS_DEFINE_NAMED_CID(NS_CHROMEPROTOCOLHANDLER_CID);
 NS_DEFINE_NAMED_CID(NS_SECURITY_CONSOLE_MESSAGE_CID);
 NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(nsChromeRegistry,
                                          nsChromeRegistry::GetSingleton)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsChromeProtocolHandler)
 #define NS_PERSISTENTPROPERTIES_CID NS_IPERSISTENTPROPERTIES_CID /* sigh */
 static already_AddRefed<nsIFactory>
 CreateINIParserFactory(const mozilla::Module& module,
                        const mozilla::Module::CIDEntry& entry)
 {
     nsCOMPtr<nsIFactory> f = new nsINIParserFactory();
     return f.forget();
 }
 static already_AddRefed<nsIFactory>
 CreateUnicharStreamFactory(const mozilla::Module& module,
                            const mozilla::Module::CIDEntry& entry)
 {
     return already_AddRefed<nsIFactory>(
             nsSimpleUnicharStreamFactory::GetInstance());
 }
 #define COMPONENT(NAME, Ctor) static NS_DEFINE_CID(kNS_##NAME##_CID, NS_##NAME##_CID);
 #include "XPCOMModule.inc"
 #undef COMPONENT
 #define COMPONENT(NAME, Ctor) { &kNS_##NAME##_CID, false, nullptr, Ctor },
 const mozilla::Module::CIDEntry kXPCOMCIDEntries[] = {
     { &kComponentManagerCID, true, nullptr, nsComponentManagerImpl::Create },
     { &kINIParserFactoryCID, false, CreateINIParserFactory },
     { &kSimpleUnicharStreamFactoryCID, false, CreateUnicharStreamFactory },
 #include "XPCOMModule.inc"
     { &kNS_CHROMEREGISTRY_CID, false, nullptr, nsChromeRegistryConstructor },
     { &kNS_CHROMEPROTOCOLHANDLER_CID, false, nullptr, nsChromeProtocolHandlerConstructor },
     { &kNS_SECURITY_CONSOLE_MESSAGE_CID, false, nullptr, nsSecurityConsoleMessageConstructor },
     { nullptr }
 };
 #undef COMPONENT
 #define COMPONENT(NAME, Ctor) { NS_##NAME##_CONTRACTID, &kNS_##NAME##_CID },
 const mozilla::Module::ContractIDEntry kXPCOMContracts[] = {
 #include "XPCOMModule.inc"
     { NS_CHROMEREGISTRY_CONTRACTID, &kNS_CHROMEREGISTRY_CID },
     { NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "chrome", &kNS_CHROMEPROTOCOLHANDLER_CID },
     { NS_INIPARSERFACTORY_CONTRACTID, &kINIParserFactoryCID },
     { NS_SECURITY_CONSOLE_MESSAGE_CONTRACTID, &kNS_SECURITY_CONSOLE_MESSAGE_CID },
     { nullptr }
 };
 #undef COMPONENT
 const mozilla::Module kXPCOMModule = { mozilla::Module::kVersion, kXPCOMCIDEntries, kXPCOMContracts };
 // gDebug will be freed during shutdown.
 static nsIDebug* gDebug = nullptr;
 EXPORT_XPCOM_API(nsresult)
 NS_GetDebug(nsIDebug** result)
 {
     return nsDebugImpl::Create(nullptr,
                                NS_GET_IID(nsIDebug),
                                (void**) result);
 }
 EXPORT_XPCOM_API(nsresult)
 NS_InitXPCOM(nsIServiceManager* *result,
                              nsIFile* binDirectory)
 {
     return NS_InitXPCOM2(result, binDirectory, nullptr);
 }
 class ICUReporter MOZ_FINAL : public nsIMemoryReporter,
                               public CountingAllocatorBase<ICUReporter>
 {
 public:
     NS_DECL_ISUPPORTS
     static void* Alloc(const void*, size_t size)
     {
         return CountingMalloc(size);
     }
     static void* Realloc(const void*, void* p, size_t size)
     {
         return CountingRealloc(p, size);
     }
     static void Free(const void*, void* p)
     {
         return CountingFree(p);
     }
 private:
     NS_IMETHODIMP
     CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData)
     {
         return MOZ_COLLECT_REPORT(
             "explicit/icu", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
             "Memory used by ICU, a Unicode and globalization support library.");
     }
 };
 NS_IMPL_ISUPPORTS(ICUReporter, nsIMemoryReporter)
 /* static */ template<> Atomic<size_t> CountingAllocatorBase<ICUReporter>::sAmount(0);
 class OggReporter MOZ_FINAL : public nsIMemoryReporter,
                               public CountingAllocatorBase<OggReporter>
 {
 public:
     NS_DECL_ISUPPORTS
 private:
     NS_IMETHODIMP
     CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData)
     {
         return MOZ_COLLECT_REPORT(
             "explicit/media/libogg", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
             "Memory allocated through libogg for Ogg, Theora, and related media files.");
     }
 };
 NS_IMPL_ISUPPORTS(OggReporter, nsIMemoryReporter)
 /* static */ template<> Atomic<size_t> CountingAllocatorBase<OggReporter>::sAmount(0);
 #ifdef MOZ_VPX
 class VPXReporter MOZ_FINAL : public nsIMemoryReporter,
                               public CountingAllocatorBase<VPXReporter>
 {
 public:
     NS_DECL_ISUPPORTS
 private:
     NS_IMETHODIMP
     CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData)
     {
         return MOZ_COLLECT_REPORT(
             "explicit/media/libvpx", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
             "Memory allocated through libvpx for WebM media files.");
     }
 };
 NS_IMPL_ISUPPORTS(VPXReporter, nsIMemoryReporter)
 /* static */ template<> Atomic<size_t> CountingAllocatorBase<VPXReporter>::sAmount(0);
 #endif /* MOZ_VPX */
 #ifdef MOZ_WEBM
 class NesteggReporter MOZ_FINAL : public nsIMemoryReporter
                                 , public CountingAllocatorBase<NesteggReporter>
 {
 public:
     NS_DECL_ISUPPORTS
 private:
     NS_IMETHODIMP
     CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData)
     {
         return MOZ_COLLECT_REPORT(
             "explicit/media/libnestegg", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
             "Memory allocated through libnestegg for WebM media files.");
     }
 };
 NS_IMPL_ISUPPORTS(NesteggReporter, nsIMemoryReporter)
 /* static */ template<> Atomic<size_t> CountingAllocatorBase<NesteggReporter>::sAmount(0);
 #endif /* MOZ_WEBM */
 // Anonymous namespace for customizing the default locale that JavaScript
 // uses, according to the value of the "javascript.default_locale" pref.
 // The current default locale can be detected in JavaScript by calling
 // `Intl.DateTimeFormat().resolvedOptions().locale`
 namespace {
 #define DEFAULT_LOCALE_PREF "javascript.default_locale"
 static char* sSystemLocale;
 static char* sJSLocale;
 // Returns a pointer to the current JS Runtime.
 static
 JSRuntime* GetRuntime() {
   nsresult rv;
   nsCOMPtr<nsIJSRuntimeService> rts = do_GetService("@mozilla.org/js/xpc/RuntimeService;1", &rv);
   if (NS_FAILED(rv)) return NULL;
   JSRuntime* rt;
   rts->GetRuntime(&rt);
   return rt;
 }
 // Takes the "javascript.default_locale" pref value and applies it. If the locale
 // is empty, we fall back to the default system and JS locales.
 static
 void DefaultLocaleChangedCallback(const char* /* pref */, void* /* closure */) {
   // Get a pointer to the default JS Runtime.
   JSRuntime* rt = GetRuntime();
   if (rt) {
     // Read the pref, which may contain a custom default locale to be used in JavaScript.
     nsAutoCString prefLocale;
     mozilla::Preferences::GetCString(DEFAULT_LOCALE_PREF, &prefLocale);
     // Set the application-wide C-locale. Needed for Date.toLocaleFormat().
     setlocale(LC_ALL, prefLocale.IsEmpty() ? sSystemLocale : prefLocale.get());
     // Now override the JavaScript Runtime Locale that is used by the Intl API
     // as well as Date.toLocaleString, Number.toLocaleString, and String.localeCompare.
     JS_SetDefaultLocale(rt, prefLocale.IsEmpty() ? sJSLocale : prefLocale.get());
   }
 }
 static
 void StartWatchingDefaultLocalePref() {
   // Get the default system locale. To be used if pref is not available.
   sSystemLocale = strdup(setlocale(LC_ALL,NULL));
   // Store the default JavaScript locale.
   JSRuntime* rt = GetRuntime();
   if (rt) {
     sJSLocale = strdup(JS_GetDefaultLocale(rt));
   }
   // Now keep the locale updated with the current pref value.
   mozilla::Preferences::RegisterCallbackAndCall(DefaultLocaleChangedCallback, DEFAULT_LOCALE_PREF);
 }
 static
 void StopWatchingDefaultLocalePref() {
   mozilla::Preferences::UnregisterCallback(DefaultLocaleChangedCallback, DEFAULT_LOCALE_PREF);
   if (sSystemLocale) free(sSystemLocale);
   if (sJSLocale) JS_free(nullptr, sJSLocale);
 }
 } // anonymous namespace for locale pref
 EXPORT_XPCOM_API(nsresult)
 NS_InitXPCOM2(nsIServiceManager* *result,
               nsIFile* binDirectory,
               nsIDirectoryServiceProvider* appFileLocationProvider)
 {
     mozPoisonValueInit();
     char aLocal;
     profiler_init(&aLocal);
     nsresult rv = NS_OK;
      // We are not shutting down
     gXPCOMShuttingDown = false;
     // Initialize the available memory tracker before other threads have had a
     // chance to start up, because the initialization is not thread-safe.
     mozilla::AvailableMemoryTracker::Init();
 #ifdef XP_UNIX
     // Discover the current value of the umask, and save it where
     // nsSystemInfo::Init can retrieve it when necessary.  There is no way
     // to read the umask without changing it, and the setting is process-
     // global, so this must be done while we are still single-threaded; the
     // nsSystemInfo object is typically created much later, when some piece
     // of chrome JS wants it.  The system call is specified as unable to fail.
     nsSystemInfo::gUserUmask = ::umask(0777);
     ::umask(nsSystemInfo::gUserUmask);
 #endif
     NS_LogInit();
     // Set up chromium libs
     NS_ASSERTION(!sExitManager && !sMessageLoop, "Bad logic!");
     if (!AtExitManager::AlreadyRegistered()) {
         sExitManager = new AtExitManager();
     }
     if (!MessageLoop::current()) {
         sMessageLoop = new MessageLoopForUI(MessageLoop::TYPE_MOZILLA_UI);
         sMessageLoop->set_thread_name("Gecko");
         // Set experimental values for main thread hangs:
         // 512ms for transient hangs and 8192ms for permanent hangs
         sMessageLoop->set_hang_timeouts(512, 8192);
     }
     if (XRE_GetProcessType() == GeckoProcessType_Default &&
         !BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO)) {
         scoped_ptr<BrowserProcessSubThread> ioThread(
             new BrowserProcessSubThread(BrowserProcessSubThread::IO));
         base::Thread::Options options;
         options.message_loop_type = MessageLoop::TYPE_IO;
         if (NS_WARN_IF(!ioThread->StartWithOptions(options)))
             return NS_ERROR_FAILURE;
         sIOThread = ioThread.release();
     }
     // Establish the main thread here.
     rv = nsThreadManager::get()->Init();
     if (NS_WARN_IF(NS_FAILED(rv)))
         return rv;
     // Set up the timer globals/timer thread
     rv = nsTimerImpl::Startup();
     if (NS_WARN_IF(NS_FAILED(rv)))
         return rv;
 #ifndef ANDROID
     // If the locale hasn't already been setup by our embedder,
     // get us out of the "C" locale and into the system
     if (strcmp(setlocale(LC_ALL, nullptr), "C") == 0)
         setlocale(LC_ALL, "");
 #endif
 #if defined(XP_UNIX)
     NS_StartupNativeCharsetUtils();
 #endif
     NS_StartupLocalFile();
     StartupSpecialSystemDirectory();
     nsDirectoryService::RealInit();
     bool value;
     if (binDirectory)
     {
         rv = binDirectory->IsDirectory(&value);
         if (NS_SUCCEEDED(rv) && value) {
             nsDirectoryService::gService->Set(NS_XPCOM_INIT_CURRENT_PROCESS_DIR, binDirectory);
         }
     }
     if (appFileLocationProvider) {
         rv = nsDirectoryService::gService->RegisterProvider(appFileLocationProvider);
         if (NS_FAILED(rv)) return rv;
     }
     nsCOMPtr<nsIFile> xpcomLib;
     nsDirectoryService::gService->Get(NS_GRE_DIR,
                                       NS_GET_IID(nsIFile),
                                       getter_AddRefs(xpcomLib));
     if (xpcomLib) {
         xpcomLib->AppendNative(nsDependentCString(XPCOM_DLL));
         nsDirectoryService::gService->Set(NS_XPCOM_LIBRARY_FILE, xpcomLib);
     }
     if (!mozilla::Omnijar::IsInitialized()) {
         mozilla::Omnijar::Init();
     }
     if ((sCommandLineWasInitialized = !CommandLine::IsInitialized())) {
 #ifdef OS_WIN
         CommandLine::Init(0, nullptr);
 #else
         nsCOMPtr<nsIFile> binaryFile;
         nsDirectoryService::gService->Get(NS_XPCOM_CURRENT_PROCESS_DIR,
                                           NS_GET_IID(nsIFile),
                                           getter_AddRefs(binaryFile));
         if (NS_WARN_IF(!binaryFile))
             return NS_ERROR_FAILURE;
         rv = binaryFile->AppendNative(NS_LITERAL_CSTRING("nonexistent-executable"));
         if (NS_WARN_IF(NS_FAILED(rv)))
             return rv;
         nsCString binaryPath;
         rv = binaryFile->GetNativePath(binaryPath);
         if (NS_WARN_IF(NS_FAILED(rv)))
             return rv;
         static char const *const argv = { strdup(binaryPath.get()) };
         CommandLine::Init(1, &argv);
 #endif
     }
     NS_ASSERTION(nsComponentManagerImpl::gComponentManager == nullptr, "CompMgr not null at init");
     // Create the Component/Service Manager
     nsComponentManagerImpl::gComponentManager = new nsComponentManagerImpl();
     NS_ADDREF(nsComponentManagerImpl::gComponentManager);
     // Global cycle collector initialization.
     if (!nsCycleCollector_init()) {
         return NS_ERROR_UNEXPECTED;
     }
     // And start it up for this thread too.
     nsCycleCollector_startup();
     // Register ICU memory functions.  This really shouldn't be necessary: the
     // JS engine should do this on its own inside JS_Init, and memory-reporting
     // code should call a JSAPI function to observe ICU memory usage.  But we
     // can't define the alloc/free functions in the JS engine, because it can't
     // depend on the XPCOM-based memory reporting goop.  So for now, we have
     // this oddness.
     mozilla::SetICUMemoryFunctions();
     // Do the same for libogg.
     ogg_set_mem_functions(OggReporter::CountingMalloc,
                           OggReporter::CountingCalloc,
                           OggReporter::CountingRealloc,
                           OggReporter::CountingFree);
 #if defined(MOZ_VPX) && !defined(MOZ_VPX_NO_MEM_REPORTING)
     // And for VPX.
     vpx_mem_set_functions(VPXReporter::CountingMalloc,
                           VPXReporter::CountingCalloc,
                           VPXReporter::CountingRealloc,
                           VPXReporter::CountingFree,
                           memcpy,
                           memset,
                           memmove);
 #endif
 #ifdef MOZ_WEBM
     // And for libnestegg.
     nestegg_set_halloc_func(NesteggReporter::CountingRealloc);
 #endif
     // Initialize the JS engine.
     if (!JS_Init()) {
         NS_RUNTIMEABORT("JS_Init failed");
     }
     rv = nsComponentManagerImpl::gComponentManager->Init();
     if (NS_FAILED(rv))
     {
         NS_RELEASE(nsComponentManagerImpl::gComponentManager);
         return rv;
     }
     if (result) {
         NS_ADDREF(*result = nsComponentManagerImpl::gComponentManager);
     }
     // The iimanager constructor searches and registers XPT files.
     // (We trigger the singleton's lazy construction here to make that happen.)
     (void) XPTInterfaceInfoManager::GetSingleton();
     // After autoreg, but before we actually instantiate any components,
     // add any services listed in the "xpcom-directory-providers" category
     // to the directory service.
     nsDirectoryService::gService->RegisterCategoryProviders();
     // Force layout to spin up so that nsContentUtils is available for cx stack
     // munging.
     nsCOMPtr<nsISupports> componentLoader = do_GetService("@mozilla.org/moz/jsloader;1");
     mozilla::scache::StartupCache::GetSingleton();
     mozilla::AvailableMemoryTracker::Activate();
     // Notify observers of xpcom autoregistration start
     NS_CreateServicesFromCategory(NS_XPCOM_STARTUP_CATEGORY,
                                   nullptr,
                                   NS_XPCOM_STARTUP_OBSERVER_ID);
 #ifdef XP_WIN
     CreateAnonTempFileRemover();
 #endif
     // We only want the SystemMemoryReporter running in one process, because it
     // profiles the entire system.  The main process is the obvious place for
     // it.
     if (XRE_GetProcessType() == GeckoProcessType_Default) {
         mozilla::SystemMemoryReporter::Init();
     }
     // The memory reporter manager is up and running -- register our reporters.
     RegisterStrongMemoryReporter(new ICUReporter());
     RegisterStrongMemoryReporter(new OggReporter());
 #ifdef MOZ_VPX
     RegisterStrongMemoryReporter(new VPXReporter());
 #endif
 #ifdef MOZ_WEBM
     RegisterStrongMemoryReporter(new NesteggReporter());
 #endif
     mozilla::Telemetry::Init();
     mozilla::HangMonitor::Startup();
     mozilla::BackgroundHangMonitor::Startup();
     const MessageLoop* const loop = MessageLoop::current();
     sMainHangMonitor = new mozilla::BackgroundHangMonitor(
         loop->thread_name().c_str(),
         loop->transient_hang_timeout(),
         loop->permanent_hang_timeout());
 #ifdef MOZ_VISUAL_EVENT_TRACER
     mozilla::eventtracer::Init();
 #endif
     // Start watching the javascript.default_locale pref.
     StartWatchingDefaultLocalePref();
     return NS_OK;
 }
 //
 // NS_ShutdownXPCOM()
 //
 // The shutdown sequence for xpcom would be
 //
 // - Notify "xpcom-shutdown" for modules to release primary (root) references
 // - Shutdown XPCOM timers
 // - Notify "xpcom-shutdown-threads" for thread joins
 // - Shutdown the event queues
 // - Release the Global Service Manager
 //   - Release all service instances held by the global service manager
 //   - Release the Global Service Manager itself
 // - Release the Component Manager
 //   - Release all factories cached by the Component Manager
 //   - Notify module loaders to shut down
 //   - Unload Libraries
 //   - Release Contractid Cache held by Component Manager
 //   - Release dll abstraction held by Component Manager
 //   - Release the Registry held by Component Manager
 //   - Finally, release the component manager itself
 //
 EXPORT_XPCOM_API(nsresult)
 NS_ShutdownXPCOM(nsIServiceManager* servMgr)
 {
     return mozilla::ShutdownXPCOM(servMgr);
 }
 namespace mozilla {
 void
 SetICUMemoryFunctions()
 {
     static bool sICUReporterInitialized = false;
     if (!sICUReporterInitialized) {
         if (!JS_SetICUMemoryFunctions(ICUReporter::Alloc, ICUReporter::Realloc,
                                       ICUReporter::Free)) {
             NS_RUNTIMEABORT("JS_SetICUMemoryFunctions failed.");
         }
         sICUReporterInitialized = true;
     }
 }
 nsresult
 ShutdownXPCOM(nsIServiceManager* servMgr)
 {
     // Make sure the hang monitor is enabled for shutdown.
     HangMonitor::NotifyActivity();
     if (!NS_IsMainThread()) {
         NS_RUNTIMEABORT("Shutdown on wrong thread");
     }
     nsresult rv;
     nsCOMPtr<nsISimpleEnumerator> moduleLoaders;
     // Notify observers of xpcom shutting down
     {
         // Block it so that the COMPtr will get deleted before we hit
         // servicemanager shutdown
         nsCOMPtr<nsIThread> thread = do_GetCurrentThread();
         if (NS_WARN_IF(!thread))
             return NS_ERROR_UNEXPECTED;
         nsRefPtr<nsObserverService> observerService;
         CallGetService("@mozilla.org/observer-service;1",
                        (nsObserverService**) getter_AddRefs(observerService));
         if (observerService)
         {
             (void) observerService->
                 NotifyObservers(nullptr, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID,
                                 nullptr);
             nsCOMPtr<nsIServiceManager> mgr;
             rv = NS_GetServiceManager(getter_AddRefs(mgr));
             if (NS_SUCCEEDED(rv))
             {
                 (void) observerService->
                     NotifyObservers(mgr, NS_XPCOM_SHUTDOWN_OBSERVER_ID,
                                     nullptr);
             }
         }
         // This must happen after the shutdown of media and widgets, which
         // are triggered by the NS_XPCOM_SHUTDOWN_OBSERVER_ID notification.
         layers::ImageBridgeChild::ShutDown();
         NS_ProcessPendingEvents(thread);
         mozilla::scache::StartupCache::DeleteSingleton();
         if (observerService)
             (void) observerService->
                 NotifyObservers(nullptr, NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID,
                                 nullptr);
         layers::CompositorParent::ShutDown();
         gXPCOMThreadsShutDown = true;
         NS_ProcessPendingEvents(thread);
         // Shutdown the timer thread and all timers that might still be alive before
         // shutting down the component manager
         nsTimerImpl::Shutdown();
         NS_ProcessPendingEvents(thread);
         // Shutdown all remaining threads.  This method does not return until
         // all threads created using the thread manager (with the exception of
         // the main thread) have exited.
         nsThreadManager::get()->Shutdown();
         NS_ProcessPendingEvents(thread);
         HangMonitor::NotifyActivity();
         // Late-write checks needs to find the profile directory, so it has to
         // be initialized before mozilla::services::Shutdown or (because of
         // xpcshell tests replacing the service) modules being unloaded.
         mozilla::InitLateWriteChecks();
         // We save the "xpcom-shutdown-loaders" observers to notify after
         // the observerservice is gone.
         if (observerService) {
             observerService->
                 EnumerateObservers(NS_XPCOM_SHUTDOWN_LOADERS_OBSERVER_ID,
                                    getter_AddRefs(moduleLoaders));
             observerService->Shutdown();
         }
     }
     // Free ClearOnShutdown()'ed smart pointers.  This needs to happen *after*
     // we've finished notifying observers of XPCOM shutdown, because shutdown
     // observers themselves might call ClearOnShutdown().
     mozilla::KillClearOnShutdown();
     // XPCOM is officially in shutdown mode NOW
     // Set this only after the observers have been notified as this
     // will cause servicemanager to become inaccessible.
     mozilla::services::Shutdown();
 #ifdef DEBUG_dougt
     fprintf(stderr, "* * * * XPCOM shutdown. Access will be denied * * * * \n");
 #endif
     // We may have AddRef'd for the caller of NS_InitXPCOM, so release it
     // here again:
     NS_IF_RELEASE(servMgr);
     // Shutdown global servicemanager
     if (nsComponentManagerImpl::gComponentManager) {
         nsComponentManagerImpl::gComponentManager->FreeServices();
     }
     // Release the directory service
     NS_IF_RELEASE(nsDirectoryService::gService);
     if (moduleLoaders) {
         bool more;
         nsCOMPtr<nsISupports> el;
         while (NS_SUCCEEDED(moduleLoaders->HasMoreElements(&more)) &&
                more) {
             moduleLoaders->GetNext(getter_AddRefs(el));
             // Don't worry about weak-reference observers here: there is
             // no reason for weak-ref observers to register for
             // xpcom-shutdown-loaders
             // FIXME: This can cause harmless writes from sqlite committing
             // log files. We have to ignore them before we can move
             // the mozilla::PoisonWrite call before this point. See bug
             // 834945 for the details.
             nsCOMPtr<nsIObserver> obs(do_QueryInterface(el));
             if (obs)
                 (void) obs->Observe(nullptr,
                                     NS_XPCOM_SHUTDOWN_LOADERS_OBSERVER_ID,
                                     nullptr);
         }
         moduleLoaders = nullptr;
     }
     nsCycleCollector_shutdown();
     PROFILER_MARKER("Shutdown xpcom");
     // If we are doing any shutdown checks, poison writes.
     if (gShutdownChecks != SCM_NOTHING) {
 #ifdef XP_MACOSX
         mozilla::OnlyReportDirtyWrites();
 #endif /* XP_MACOSX */
         mozilla::BeginLateWriteChecks();
     }
     // Shutdown nsLocalFile string conversion
     NS_ShutdownLocalFile();
 #ifdef XP_UNIX
     NS_ShutdownNativeCharsetUtils();
 #endif
     // Shutdown xpcom. This will release all loaders and cause others holding
     // a refcount to the component manager to release it.
     if (nsComponentManagerImpl::gComponentManager) {
         rv = (nsComponentManagerImpl::gComponentManager)->Shutdown();
         NS_ASSERTION(NS_SUCCEEDED(rv), "Component Manager shutdown failed.");
     } else {
         NS_WARNING("Component Manager was never created ...");
     }
 #ifdef MOZ_ENABLE_PROFILER_SPS
     // In optimized builds we don't do shutdown collections by default, so
     // uncollected (garbage) objects may keep the nsXPConnect singleton alive,
     // and its XPCJSRuntime along with it. However, we still destroy various
     // bits of state in JS_ShutDown(), so we need to make sure the profiler
     // can't access them when it shuts down. This call nulls out the
     // JS pseudo-stack's internal reference to the main thread JSRuntime,
     // duplicating the call in XPCJSRuntime::~XPCJSRuntime() in case that
     // never fired.
     if (PseudoStack *stack = mozilla_get_pseudo_stack()) {
         stack->sampleRuntime(nullptr);
     }
 #endif
     // Shut down the JS engine.
     JS_ShutDown();
     // Release our own singletons
     // Do this _after_ shutting down the component manager, because the
     // JS component loader will use XPConnect to call nsIModule::canUnload,
     // and that will spin up the InterfaceInfoManager again -- bad mojo
     XPTInterfaceInfoManager::FreeInterfaceInfoManager();
     // Finally, release the component manager last because it unloads the
     // libraries:
     if (nsComponentManagerImpl::gComponentManager) {
       nsrefcnt cnt;
       NS_RELEASE2(nsComponentManagerImpl::gComponentManager, cnt);
       NS_ASSERTION(cnt == 0, "Component Manager being held past XPCOM shutdown.");
     }
     nsComponentManagerImpl::gComponentManager = nullptr;
     nsCategoryManager::Destroy();
     NS_PurgeAtomTable();
     NS_IF_RELEASE(gDebug);
     if (sIOThread) {
         delete sIOThread;
         sIOThread = nullptr;
     }
     if (sMessageLoop) {
         delete sMessageLoop;
         sMessageLoop = nullptr;
     }
     if (sCommandLineWasInitialized) {
         CommandLine::Terminate();
         sCommandLineWasInitialized = false;
     }
     if (sExitManager) {
         delete sExitManager;
         sExitManager = nullptr;
     }
     StopWatchingDefaultLocalePref();
     Omnijar::CleanUp();
     HangMonitor::Shutdown();
     if (sMainHangMonitor) {
         delete sMainHangMonitor;
         sMainHangMonitor = nullptr;
     }
     BackgroundHangMonitor::Shutdown();
 #ifdef MOZ_VISUAL_EVENT_TRACER
     eventtracer::Shutdown();
 #endif
     profiler_shutdown();
     NS_LogTerm();
     return NS_OK;
 }
 } // namespace mozilla

The Tor Browser / annotate

xpcom/build/nsXPComInit.cpp@b8a032363ba2 (annotated)

xpcom/build/nsXPComInit.cpp