DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (777e60ca8853)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990
/* -*- 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 "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 "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 */

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

    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;
    }

    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