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58325c73be
gecko/xpcom/build/nsXPComInit.cpp
Ehsan Akhgari 6220f98ec6 Backed out 9 changesets (bug 943660, bug 936964) because of ASAN use-after-free crashes on browser-chrome and mochitest-other 
Backed out changeset 85486c4aa3d8 (bug 936964)
Backed out changeset 25312eb71998 (bug 936964)
Backed out changeset 6dbb8333960c (bug 936964)
Backed out changeset da6465ad476f (bug 936964)
Backed out changeset a87ffc992f38 (bug 936964)
Backed out changeset 4ae3a61182db (bug 936964)
Backed out changeset 34e9c3137804 (bug 936964)
Backed out changeset fd1459e71585 (bug 936964)
Backed out changeset 3e8a701d8bdc (bug 943660)

Landed on a CLOSED TREE

--HG--
rename : content/canvas/src/WebGLMemoryTracker.h => content/canvas/src/WebGLMemoryReporterWrapper.h
2013-11-27 20:05:00 -05:00

851 lines
26 KiB
C++
Raw Blame History

/* -*- 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 "mozilla/BackgroundHangMonitor.h"
#include "nsChromeRegistry.h"
#include "nsChromeProtocolHandler.h"
#include "mozilla/IOInterposer.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"
#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");
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_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 MemoryUniReporter
{
public:
ICUReporter()
: MemoryUniReporter("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();
}
if (!MessageLoop::current()) {
sMessageLoop = new MessageLoopForUI(MessageLoop::TYPE_MOZILLA_UI);
}
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) || 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));
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.
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
// The memory reporter manager is up and running -- register a reporter for
// ICU's memory usage.
RegisterStrongMemoryReporter(new ICUReporter());
mozilla::Telemetry::Init();
mozilla::HangMonitor::Startup();
mozilla::BackgroundHangMonitor::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();
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);
}
}
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();
// 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) {
// Calling InitIOInterposer or InitPoisonIOInterposer twice doesn't
// cause any problems, they'll safely abort the initialization on their
// own initiative.
mozilla::IOInterposer::Init();
mozilla::InitPoisonIOInterposer();
#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 ...");
}
// 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();
BackgroundHangMonitor::Shutdown();
#ifdef MOZ_VISUAL_EVENT_TRACER
eventtracer::Shutdown();
#endif
profiler_shutdown();
NS_LogTerm();
return NS_OK;
}
} // namespace mozilla
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