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gecko/xpcom/build/nsXPComInit.cpp

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/* -*- 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/XPCOM.h"
#include "nsXULAppAPI.h"
#include "nsXPCOMPrivate.h"
#include "nsXPCOMCIDInternal.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 "nsTraceRefcntImpl.h"
#include "nsErrorService.h"
#include "nsSupportsArray.h"
#include "nsArray.h"
#include "nsINIParserImpl.h"
#include "nsSupportsPrimitives.h"
#include "nsConsoleService.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) || defined(XP_OS2)
#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 "nsTraceRefcnt.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 <locale.h>
#include "mozilla/Services.h"
#include "mozilla/Omnijar.h"
#include "mozilla/HangMonitor.h"
#include "mozilla/Telemetry.h"
#include "nsChromeRegistry.h"
#include "nsChromeProtocolHandler.h"
#include "mozilla/mozPoisonWrite.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/MapsMemoryReporter.h"
#include "mozilla/AvailableMemoryTracker.h"
#include "mozilla/ClearOnShutdown.h"
#ifdef MOZ_VISUAL_EVENT_TRACER
#include "mozilla/VisualEventTracer.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;
} /* 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(nsIOUtil)
NS_GENERIC_FACTORY_CONSTRUCTOR(nsSecurityConsoleMessage)
static nsresult
nsThreadManagerGetSingleton(nsISupports* outer,
const nsIID& aIID,
void* *aInstancePtr)
{
NS_ASSERTION(aInstancePtr, "null outptr");
NS_ENSURE_TRUE(!outer, 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");
NS_ENSURE_TRUE(!outer, NS_ERROR_NO_AGGREGATION);
nsCOMPtr<nsIInterfaceInfoManager> iim
(XPTInterfaceInfoManager::GetSingleton());
if (!iim)
return NS_ERROR_FAILURE;
return iim->QueryInterface(aIID, aInstancePtr);
}
nsComponentManagerImpl* nsComponentManagerImpl::gComponentManager = NULL;
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, NULL, Ctor },
const mozilla::Module::CIDEntry kXPCOMCIDEntries[] = {
{ &kComponentManagerCID, true, NULL, nsComponentManagerImpl::Create },
{ &kINIParserFactoryCID, false, CreateINIParserFactory },
{ &kSimpleUnicharStreamFactoryCID, false, CreateUnicharStreamFactory },
#include "XPCOMModule.inc"
{ &kNS_CHROMEREGISTRY_CID, false, NULL, nsChromeRegistryConstructor },
{ &kNS_CHROMEPROTOCOLHANDLER_CID, false, NULL, nsChromeProtocolHandlerConstructor },
{ &kNS_SECURITY_CONSOLE_MESSAGE_CID, false, NULL, nsSecurityConsoleMessageConstructor },
{ NULL }
};
#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 },
{ NULL }
};
#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_GetTraceRefcnt(nsITraceRefcnt** result)
{
return nsTraceRefcntImpl::Create(nullptr,
NS_GET_IID(nsITraceRefcnt),
(void**) result);
}
EXPORT_XPCOM_API(nsresult)
NS_InitXPCOM(nsIServiceManager* *result,
nsIFile* binDirectory)
{
return NS_InitXPCOM2(result, binDirectory, nullptr);
}
class ICUReporter MOZ_FINAL : public MemoryReporterBase
{
public:
ICUReporter()
: MemoryReporterBase("explicit/icu", KIND_HEAP, UNITS_BYTES,
"Memory used by ICU, a Unicode and globalization support library.")
{
#ifdef DEBUG
// There must be only one instance of this class, due to |sAmount|
// being static.
static bool hasRun = false;
MOZ_ASSERT(!hasRun);
hasRun = true;
#endif
sAmount = 0;
}
static void* Alloc(const void*, size_t size)
{
void* p = malloc(size);
sAmount += MallocSizeOfOnAlloc(p);
return p;
}
static void* Realloc(const void*, void* p, size_t size)
{
sAmount -= MallocSizeOfOnFree(p);
void *pnew = realloc(p, size);
if (pnew) {
sAmount += MallocSizeOfOnAlloc(pnew);
} else {
// realloc failed; undo the decrement from above
sAmount += MallocSizeOfOnAlloc(p);
}
return pnew;
}
static void Free(const void*, void* p)
{
sAmount -= MallocSizeOfOnFree(p);
free(p);
}
private:
// |sAmount| can be (implicitly) accessed by multiple JSRuntimes, so it
// must be thread-safe.
static Atomic<size_t> sAmount;
int64_t Amount() MOZ_OVERRIDE { return sAmount; }
};
/* static */ Atomic<size_t> ICUReporter::sAmount;
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();
NS_LogInit();
// Set up chromium libs
NS_ASSERTION(!sExitManager && !sMessageLoop, "Bad logic!");
if (!AtExitManager::AlreadyRegistered()) {
sExitManager = new AtExitManager();
NS_ENSURE_STATE(sExitManager);
}
if (!MessageLoop::current()) {
sMessageLoop = new MessageLoopForUI(MessageLoop::TYPE_MOZILLA_UI);
NS_ENSURE_STATE(sMessageLoop);
}
if (XRE_GetProcessType() == GeckoProcessType_Default &&
!BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO)) {
scoped_ptr<BrowserProcessSubThread> ioThread(
new BrowserProcessSubThread(BrowserProcessSubThread::IO));
NS_ENSURE_TRUE(ioThread.get(), NS_ERROR_OUT_OF_MEMORY);
base::Thread::Options options;
options.message_loop_type = MessageLoop::TYPE_IO;
NS_ENSURE_TRUE(ioThread->StartWithOptions(options), NS_ERROR_FAILURE);
sIOThread = ioThread.release();
}
// Establish the main thread here.
rv = nsThreadManager::get()->Init();
if (NS_FAILED(rv)) return rv;
// Set up the timer globals/timer thread
rv = nsTimerImpl::Startup();
NS_ENSURE_SUCCESS(rv, 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, NULL), "C") == 0)
setlocale(LC_ALL, "");
#endif
#if defined(XP_UNIX) || defined(XP_OS2)
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));
NS_ENSURE_STATE(binaryFile);
rv = binaryFile->AppendNative(NS_LITERAL_CSTRING("nonexistent-executable"));
NS_ENSURE_SUCCESS(rv, rv);
nsCString binaryPath;
rv = binaryFile->GetNativePath(binaryPath);
NS_ENSURE_SUCCESS(rv, rv);
static char const *const argv = { strdup(binaryPath.get()) };
CommandLine::Init(1, &argv);
#endif
}
NS_ASSERTION(nsComponentManagerImpl::gComponentManager == NULL, "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.
if (!JS_SetICUMemoryFunctions(ICUReporter::Alloc, ICUReporter::Realloc,
ICUReporter::Free)) {
NS_RUNTIMEABORT("JS_SetICUMemoryFunctions failed.");
}
// 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
mozilla::MapsMemoryReporter::Init();
// The memory reporter manager is up and running -- register a reporter for
// ICU's memory usage.
NS_RegisterMemoryReporter(new ICUReporter());
mozilla::Telemetry::Init();
mozilla::HangMonitor::Startup();
#ifdef MOZ_VISUAL_EVENT_TRACER
mozilla::eventtracer::Init();
#endif
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 {
nsresult
ShutdownXPCOM(nsIServiceManager* servMgr)
{
// Make sure the hang monitor is enabled for shutdown.
HangMonitor::NotifyActivity();
NS_ENSURE_STATE(NS_IsMainThread());
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();
NS_ENSURE_STATE(thread);
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);
}
}
NS_ProcessPendingEvents(thread);
mozilla::scache::StartupCache::DeleteSingleton();
if (observerService)
(void) observerService->
NotifyObservers(nullptr, NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID,
nullptr);
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();
// Write poisoning 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.
InitWritePoisoning();
// 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) {
mozilla::PoisonWrite();
}
// 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 ...");
}
// 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;
}
Omnijar::CleanUp();
HangMonitor::Shutdown();
#ifdef MOZ_VISUAL_EVENT_TRACER
eventtracer::Shutdown();
#endif
profiler_shutdown();
NS_LogTerm();
return NS_OK;
}
} // namespace mozilla
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