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6220f98ec6
gecko/xpcom/components/nsComponentManager.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

1983 lines
59 KiB
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Raw Blame History

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 tw=80: */
/* 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/.
*
* This Original Code has been modified by IBM Corporation.
* Modifications made by IBM described herein are
* Copyright (c) International Business Machines
* Corporation, 2000
*
* Modifications to Mozilla code or documentation
* identified per MPL Section 3.3
*
* Date Modified by Description of modification
* 04/20/2000 IBM Corp. Added PR_CALLBACK for Optlink use in OS2
*/
#include <stdlib.h>
#include "nscore.h"
#include "nsISupports.h"
#include "nspr.h"
#include "nsCRT.h" // for atoll
// Arena used by component manager for storing contractid string, dll
// location strings and small objects
// CAUTION: Arena align mask needs to be defined before including plarena.h
// currently from nsComponentManager.h
#define PL_ARENA_CONST_ALIGN_MASK 7
#define NS_CM_BLOCK_SIZE (1024 * 8)
#include "nsCategoryManager.h"
#include "nsCOMPtr.h"
#include "nsComponentManager.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsCategoryManager.h"
#include "nsCategoryManagerUtils.h"
#include "xptiprivate.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/XPTInterfaceInfoManager.h"
#include "nsIConsoleService.h"
#include "nsIMemoryReporter.h"
#include "nsIObserverService.h"
#include "nsISimpleEnumerator.h"
#include "nsIStringEnumerator.h"
#include "nsXPCOM.h"
#include "nsXPCOMPrivate.h"
#include "nsISupportsPrimitives.h"
#include "nsIClassInfo.h"
#include "nsLocalFile.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsXPIDLString.h"
#include "prcmon.h"
#include "xptinfo.h" // this after nsISupports, to pick up IID so that xpt stuff doesn't try to define it itself...
#include "nsThreadUtils.h"
#include "prthread.h"
#include "private/pprthred.h"
#include "nsTArray.h"
#include "prio.h"
#include "ManifestParser.h"
#include "mozilla/Services.h"
#include "nsManifestLineReader.h"
#include "mozilla/GenericFactory.h"
#include "nsSupportsPrimitives.h"
#include "nsArray.h"
#include "nsIMutableArray.h"
#include "nsArrayEnumerator.h"
#include "nsStringEnumerator.h"
#include "mozilla/FileUtils.h"
#include "nsNetUtil.h"
#include <new> // for placement new
#include "mozilla/Omnijar.h"
#include "prlog.h"
using namespace mozilla;
PRLogModuleInfo* nsComponentManagerLog = nullptr;
// defined in nsStaticXULComponents.cpp to contain all the components in
// libxul.
extern mozilla::Module const *const *const kPStaticModules[];
#if 0 || defined (DEBUG_timeless)
#define SHOW_DENIED_ON_SHUTDOWN
#define SHOW_CI_ON_EXISTING_SERVICE
#endif
// Bloated registry buffer size to improve startup performance -- needs to
// be big enough to fit the entire file into memory or it'll thrash.
// 512K is big enough to allow for some future growth in the registry.
#define BIG_REGISTRY_BUFLEN (512*1024)
// Common Key Names
const char classIDKeyName[]="classID";
const char classesKeyName[]="contractID";
const char componentsKeyName[]="components";
const char xpcomComponentsKeyName[]="software/mozilla/XPCOM/components";
const char xpcomKeyName[]="software/mozilla/XPCOM";
// Common Value Names
const char classIDValueName[]="ClassID";
const char classNameValueName[]="ClassName";
const char componentCountValueName[]="ComponentsCount";
const char componentTypeValueName[]="ComponentType";
const char contractIDValueName[]="ContractID";
const char fileSizeValueName[]="FileSize";
const char inprocServerValueName[]="InprocServer";
const char lastModValueName[]="LastModTimeStamp";
const char nativeComponentType[]="application/x-mozilla-native";
const char staticComponentType[]="application/x-mozilla-static";
const char jarComponentType[]="application/x-mozilla-jarjs";
const char versionValueName[]="VersionString";
const static char XPCOM_ABSCOMPONENT_PREFIX[] = "abs:";
const static char XPCOM_RELCOMPONENT_PREFIX[] = "rel:";
const static char XPCOM_GRECOMPONENT_PREFIX[] = "gre:";
static const char gIDFormat[] =
"{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}";
#define NS_EMPTY_IID \
{ \
0x00000000, \
0x0000, \
0x0000, \
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} \
}
NS_DEFINE_CID(kEmptyCID, NS_EMPTY_IID);
NS_DEFINE_CID(kCategoryManagerCID, NS_CATEGORYMANAGER_CID);
#define UID_STRING_LENGTH 39
nsresult
nsGetServiceFromCategory::operator()(const nsIID& aIID, void** aInstancePtr) const
{
nsresult rv;
nsXPIDLCString value;
nsCOMPtr<nsICategoryManager> catman;
nsComponentManagerImpl *compMgr = nsComponentManagerImpl::gComponentManager;
if (!compMgr) {
rv = NS_ERROR_NOT_INITIALIZED;
goto error;
}
if (!mCategory || !mEntry) {
// when categories have defaults, use that for null mEntry
rv = NS_ERROR_NULL_POINTER;
goto error;
}
rv = compMgr->nsComponentManagerImpl::GetService(kCategoryManagerCID,
NS_GET_IID(nsICategoryManager),
getter_AddRefs(catman));
if (NS_FAILED(rv)) goto error;
/* find the contractID for category.entry */
rv = catman->GetCategoryEntry(mCategory, mEntry,
getter_Copies(value));
if (NS_FAILED(rv)) goto error;
if (!value) {
rv = NS_ERROR_SERVICE_NOT_AVAILABLE;
goto error;
}
rv = compMgr->
nsComponentManagerImpl::GetServiceByContractID(value,
aIID, aInstancePtr);
if (NS_FAILED(rv)) {
error:
*aInstancePtr = 0;
}
if (mErrorPtr)
*mErrorPtr = rv;
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// Arena helper functions
////////////////////////////////////////////////////////////////////////////////
char *
ArenaStrndup(const char *s, uint32_t len, PLArenaPool *arena)
{
void *mem;
// Include trailing null in the len
PL_ARENA_ALLOCATE(mem, arena, len+1);
if (mem)
memcpy(mem, s, len+1);
return static_cast<char *>(mem);
}
char*
ArenaStrdup(const char *s, PLArenaPool *arena)
{
return ArenaStrndup(s, strlen(s), arena);
}
// GetService and a few other functions need to exit their mutex mid-function
// without reentering it later in the block. This class supports that
// style of early-exit that MutexAutoUnlock doesn't.
namespace {
class MOZ_STACK_CLASS MutexLock
{
public:
MutexLock(SafeMutex& aMutex)
: mMutex(aMutex)
, mLocked(false)
{
Lock();
}
~MutexLock()
{
if (mLocked)
Unlock();
}
void Lock()
{
NS_ASSERTION(!mLocked, "Re-entering a mutex");
mMutex.Lock();
mLocked = true;
}
void Unlock()
{
NS_ASSERTION(mLocked, "Exiting a mutex that isn't held!");
mMutex.Unlock();
mLocked = false;
}
private:
SafeMutex& mMutex;
bool mLocked;
};
} // anonymous namespace
// this is safe to call during InitXPCOM
static already_AddRefed<nsIFile>
GetLocationFromDirectoryService(const char* prop)
{
nsCOMPtr<nsIProperties> directoryService;
nsDirectoryService::Create(nullptr,
NS_GET_IID(nsIProperties),
getter_AddRefs(directoryService));
if (!directoryService)
return nullptr;
nsCOMPtr<nsIFile> file;
nsresult rv = directoryService->Get(prop,
NS_GET_IID(nsIFile),
getter_AddRefs(file));
if (NS_FAILED(rv))
return nullptr;
return file.forget();
}
static already_AddRefed<nsIFile>
CloneAndAppend(nsIFile* aBase, const nsACString& append)
{
nsCOMPtr<nsIFile> f;
aBase->Clone(getter_AddRefs(f));
if (!f)
return nullptr;
f->AppendNative(append);
return f.forget();
}
////////////////////////////////////////////////////////////////////////////////
// nsComponentManagerImpl
////////////////////////////////////////////////////////////////////////////////
class XPCOMComponentManagerReporter MOZ_FINAL : public MemoryUniReporter
{
public:
XPCOMComponentManagerReporter()
: MemoryUniReporter("explicit/xpcom/component-manager",
KIND_HEAP, UNITS_BYTES,
"Memory used for the XPCOM component manager.")
{}
private:
int64_t Amount() MOZ_OVERRIDE
{
return nsComponentManagerImpl::gComponentManager
? nsComponentManagerImpl::gComponentManager->SizeOfIncludingThis(
MallocSizeOf)
: 0;
}
};
nsresult
nsComponentManagerImpl::Create(nsISupports* aOuter, REFNSIID aIID, void** aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
if (!gComponentManager)
return NS_ERROR_FAILURE;
return gComponentManager->QueryInterface(aIID, aResult);
}
static const int CONTRACTID_HASHTABLE_INITIAL_SIZE = 2048;
nsComponentManagerImpl::nsComponentManagerImpl()
: mFactories(CONTRACTID_HASHTABLE_INITIAL_SIZE)
, mContractIDs(CONTRACTID_HASHTABLE_INITIAL_SIZE)
, mLock("nsComponentManagerImpl.mLock")
, mStatus(NOT_INITIALIZED)
{
}
nsTArray<const mozilla::Module*>* nsComponentManagerImpl::sStaticModules;
/* static */ void
nsComponentManagerImpl::InitializeStaticModules()
{
if (sStaticModules)
return;
sStaticModules = new nsTArray<const mozilla::Module*>;
for (const mozilla::Module *const *const *staticModules = kPStaticModules;
*staticModules; ++staticModules)
sStaticModules->AppendElement(**staticModules);
}
nsTArray<nsComponentManagerImpl::ComponentLocation>*
nsComponentManagerImpl::sModuleLocations;
/* static */ void
nsComponentManagerImpl::InitializeModuleLocations()
{
if (sModuleLocations)
return;
sModuleLocations = new nsTArray<ComponentLocation>;
}
nsresult nsComponentManagerImpl::Init()
{
PR_ASSERT(NOT_INITIALIZED == mStatus);
if (nsComponentManagerLog == nullptr)
{
nsComponentManagerLog = PR_NewLogModule("nsComponentManager");
}
// Initialize our arena
PL_INIT_ARENA_POOL(&mArena, "ComponentManagerArena", NS_CM_BLOCK_SIZE);
nsCOMPtr<nsIFile> greDir =
GetLocationFromDirectoryService(NS_GRE_DIR);
nsCOMPtr<nsIFile> appDir =
GetLocationFromDirectoryService(NS_XPCOM_CURRENT_PROCESS_DIR);
InitializeStaticModules();
InitializeModuleLocations();
ComponentLocation* cl = sModuleLocations->InsertElementAt(0);
nsCOMPtr<nsIFile> lf = CloneAndAppend(appDir, NS_LITERAL_CSTRING("chrome.manifest"));
cl->type = NS_COMPONENT_LOCATION;
cl->location.Init(lf);
bool equals = false;
appDir->Equals(greDir, &equals);
if (!equals) {
cl = sModuleLocations->InsertElementAt(0);
cl->type = NS_COMPONENT_LOCATION;
lf = CloneAndAppend(greDir, NS_LITERAL_CSTRING("chrome.manifest"));
cl->location.Init(lf);
}
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
("nsComponentManager: Initialized."));
nsresult rv = mNativeModuleLoader.Init();
if (NS_FAILED(rv))
return rv;
nsCategoryManager::GetSingleton()->SuppressNotifications(true);
RegisterModule(&kXPCOMModule, nullptr);
for (uint32_t i = 0; i < sStaticModules->Length(); ++i)
RegisterModule((*sStaticModules)[i], nullptr);
nsRefPtr<nsZipArchive> appOmnijar = mozilla::Omnijar::GetReader(mozilla::Omnijar::APP);
if (appOmnijar) {
cl = sModuleLocations->InsertElementAt(1); // Insert after greDir
cl->type = NS_COMPONENT_LOCATION;
cl->location.Init(appOmnijar, "chrome.manifest");
}
nsRefPtr<nsZipArchive> greOmnijar = mozilla::Omnijar::GetReader(mozilla::Omnijar::GRE);
if (greOmnijar) {
cl = sModuleLocations->InsertElementAt(0);
cl->type = NS_COMPONENT_LOCATION;
cl->location.Init(greOmnijar, "chrome.manifest");
}
RereadChromeManifests(false);
nsCategoryManager::GetSingleton()->SuppressNotifications(false);
mReporter = new XPCOMComponentManagerReporter();
NS_RegisterMemoryReporter(mReporter);
// Unfortunately, we can't register the nsCategoryManager memory reporter
// in its constructor (which is triggered by the GetSingleton() call
// above) because the memory reporter manager isn't initialized at that
// point. So we wait until now.
nsCategoryManager::GetSingleton()->InitMemoryReporter();
mStatus = NORMAL;
return NS_OK;
}
void
nsComponentManagerImpl::RegisterModule(const mozilla::Module* aModule,
FileLocation* aFile)
{
mLock.AssertNotCurrentThreadOwns();
{
// Scope the monitor so that we don't hold it while calling into the
// category manager.
MutexLock lock(mLock);
KnownModule* m;
if (aFile) {
nsCString uri;
aFile->GetURIString(uri);
NS_ASSERTION(!mKnownModules.Get(uri),
"Must not register a binary module twice.");
m = new KnownModule(aModule, *aFile);
mKnownModules.Put(uri, m);
} else {
m = new KnownModule(aModule);
mKnownStaticModules.AppendElement(m);
}
if (aModule->mCIDs) {
const mozilla::Module::CIDEntry* entry;
for (entry = aModule->mCIDs; entry->cid; ++entry)
RegisterCIDEntryLocked(entry, m);
}
if (aModule->mContractIDs) {
const mozilla::Module::ContractIDEntry* entry;
for (entry = aModule->mContractIDs; entry->contractid; ++entry)
RegisterContractIDLocked(entry);
MOZ_ASSERT(!entry->cid, "Incorrectly terminated contract list");
}
}
if (aModule->mCategoryEntries) {
const mozilla::Module::CategoryEntry* entry;
for (entry = aModule->mCategoryEntries; entry->category; ++entry)
nsCategoryManager::GetSingleton()->
AddCategoryEntry(entry->category,
entry->entry,
entry->value);
}
}
void
nsComponentManagerImpl::RegisterCIDEntryLocked(
const mozilla::Module::CIDEntry* aEntry,
KnownModule* aModule)
{
mLock.AssertCurrentThreadOwns();
nsFactoryEntry* f = mFactories.Get(*aEntry->cid);
if (f) {
NS_WARNING("Re-registering a CID?");
char idstr[NSID_LENGTH];
aEntry->cid->ToProvidedString(idstr);
nsCString existing;
if (f->mModule)
existing = f->mModule->Description();
else
existing = "<unknown module>";
SafeMutexAutoUnlock unlock(mLock);
LogMessage("While registering XPCOM module %s, trying to re-register CID '%s' already registered by %s.",
aModule->Description().get(),
idstr,
existing.get());
return;
}
f = new nsFactoryEntry(aEntry, aModule);
mFactories.Put(*aEntry->cid, f);
}
void
nsComponentManagerImpl::RegisterContractIDLocked(
const mozilla::Module::ContractIDEntry* aEntry)
{
mLock.AssertCurrentThreadOwns();
nsFactoryEntry* f = mFactories.Get(*aEntry->cid);
if (!f) {
NS_ERROR("No CID found when attempting to map contract ID");
char idstr[NSID_LENGTH];
aEntry->cid->ToProvidedString(idstr);
LogMessage("Could not map contract ID '%s' to CID %s because no implementation of the CID is registered.",
aEntry->contractid,
idstr);
return;
}
mContractIDs.Put(nsDependentCString(aEntry->contractid), f);
}
static void
CutExtension(nsCString& path)
{
int32_t dotPos = path.RFindChar('.');
if (kNotFound == dotPos)
path.Truncate();
else
path.Cut(0, dotPos + 1);
}
void
nsComponentManagerImpl::RegisterManifest(NSLocationType aType,
FileLocation &aFile,
bool aChromeOnly)
{
uint32_t len;
FileLocation::Data data;
nsAutoArrayPtr<char> buf;
nsresult rv = aFile.GetData(data);
if (NS_SUCCEEDED(rv)) {
rv = data.GetSize(&len);
}
if (NS_SUCCEEDED(rv)) {
buf = new char[len + 1];
rv = data.Copy(buf, len);
}
if (NS_SUCCEEDED(rv)) {
buf[len] = '\0';
ParseManifest(aType, aFile, buf, aChromeOnly);
} else if (NS_BOOTSTRAPPED_LOCATION != aType) {
nsCString uri;
aFile.GetURIString(uri);
LogMessage("Could not read chrome manifest '%s'.", uri.get());
}
}
void
nsComponentManagerImpl::ManifestManifest(ManifestProcessingContext& cx, int lineno, char *const * argv)
{
char* file = argv[0];
FileLocation f(cx.mFile, file);
RegisterManifest(cx.mType, f, cx.mChromeOnly);
}
void
nsComponentManagerImpl::ManifestBinaryComponent(ManifestProcessingContext& cx, int lineno, char *const * argv)
{
if (cx.mFile.IsZip()) {
NS_WARNING("Cannot load binary components from a jar.");
LogMessageWithContext(cx.mFile, lineno,
"Cannot load binary components from a jar.");
return;
}
FileLocation f(cx.mFile, argv[0]);
nsCString uri;
f.GetURIString(uri);
if (mKnownModules.Get(uri)) {
NS_WARNING("Attempting to register a binary component twice.");
LogMessageWithContext(cx.mFile, lineno,
"Attempting to register a binary component twice.");
return;
}
const mozilla::Module* m = mNativeModuleLoader.LoadModule(f);
// The native module loader should report an error here, we don't have to
if (!m)
return;
RegisterModule(m, &f);
}
void
nsComponentManagerImpl::ManifestXPT(ManifestProcessingContext& cx, int lineno, char *const * argv)
{
FileLocation f(cx.mFile, argv[0]);
uint32_t len;
FileLocation::Data data;
nsAutoArrayPtr<char> buf;
nsresult rv = f.GetData(data);
if (NS_SUCCEEDED(rv)) {
rv = data.GetSize(&len);
}
if (NS_SUCCEEDED(rv)) {
buf = new char[len];
rv = data.Copy(buf, len);
}
if (NS_SUCCEEDED(rv)) {
XPTInterfaceInfoManager::GetSingleton()->RegisterBuffer(buf, len);
} else {
nsCString uri;
f.GetURIString(uri);
LogMessage("Could not read '%s'.", uri.get());
}
}
void
nsComponentManagerImpl::ManifestComponent(ManifestProcessingContext& cx, int lineno, char *const * argv)
{
mLock.AssertNotCurrentThreadOwns();
char* id = argv[0];
char* file = argv[1];
nsID cid;
if (!cid.Parse(id)) {
LogMessageWithContext(cx.mFile, lineno,
"Malformed CID: '%s'.", id);
return;
}
// Precompute the hash/file data outside of the lock
FileLocation fl(cx.mFile, file);
nsCString hash;
fl.GetURIString(hash);
MutexLock lock(mLock);
nsFactoryEntry* f = mFactories.Get(cid);
if (f) {
char idstr[NSID_LENGTH];
cid.ToProvidedString(idstr);
nsCString existing;
if (f->mModule)
existing = f->mModule->Description();
else
existing = "<unknown module>";
lock.Unlock();
LogMessageWithContext(cx.mFile, lineno,
"Trying to re-register CID '%s' already registered by %s.",
idstr,
existing.get());
return;
}
KnownModule* km;
km = mKnownModules.Get(hash);
if (!km) {
km = new KnownModule(fl);
mKnownModules.Put(hash, km);
}
void* place;
PL_ARENA_ALLOCATE(place, &mArena, sizeof(nsCID));
nsID* permanentCID = static_cast<nsID*>(place);
*permanentCID = cid;
PL_ARENA_ALLOCATE(place, &mArena, sizeof(mozilla::Module::CIDEntry));
mozilla::Module::CIDEntry* e = new (place) mozilla::Module::CIDEntry();
e->cid = permanentCID;
f = new nsFactoryEntry(e, km);
mFactories.Put(cid, f);
}
void
nsComponentManagerImpl::ManifestContract(ManifestProcessingContext& cx, int lineno, char *const * argv)
{
mLock.AssertNotCurrentThreadOwns();
char* contract = argv[0];
char* id = argv[1];
nsID cid;
if (!cid.Parse(id)) {
LogMessageWithContext(cx.mFile, lineno,
"Malformed CID: '%s'.", id);
return;
}
MutexLock lock(mLock);
nsFactoryEntry* f = mFactories.Get(cid);
if (!f) {
lock.Unlock();
LogMessageWithContext(cx.mFile, lineno,
"Could not map contract ID '%s' to CID %s because no implementation of the CID is registered.",
contract, id);
return;
}
mContractIDs.Put(nsDependentCString(contract), f);
}
void
nsComponentManagerImpl::ManifestCategory(ManifestProcessingContext& cx, int lineno, char *const * argv)
{
char* category = argv[0];
char* key = argv[1];
char* value = argv[2];
nsCategoryManager::GetSingleton()->
AddCategoryEntry(category, key, value);
}
void
nsComponentManagerImpl::RereadChromeManifests(bool aChromeOnly)
{
for (uint32_t i = 0; i < sModuleLocations->Length(); ++i) {
ComponentLocation& l = sModuleLocations->ElementAt(i);
RegisterManifest(l.type, l.location, aChromeOnly);
}
}
bool
nsComponentManagerImpl::KnownModule::EnsureLoader()
{
if (!mLoader) {
nsCString extension;
mFile.GetURIString(extension);
CutExtension(extension);
mLoader = nsComponentManagerImpl::gComponentManager->LoaderForExtension(extension);
}
return !!mLoader;
}
bool
nsComponentManagerImpl::KnownModule::Load()
{
if (mFailed)
return false;
if (!mModule) {
if (!EnsureLoader())
return false;
mModule = mLoader->LoadModule(mFile);
if (!mModule) {
mFailed = true;
return false;
}
}
if (!mLoaded) {
if (mModule->loadProc) {
nsresult rv = mModule->loadProc();
if (NS_FAILED(rv)) {
mFailed = true;
return false;
}
}
mLoaded = true;
}
return true;
}
nsCString
nsComponentManagerImpl::KnownModule::Description() const
{
nsCString s;
if (mFile)
mFile.GetURIString(s);
else
s = "<static module>";
return s;
}
nsresult nsComponentManagerImpl::Shutdown(void)
{
PR_ASSERT(NORMAL == mStatus);
mStatus = SHUTDOWN_IN_PROGRESS;
// Shutdown the component manager
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Beginning Shutdown."));
NS_UnregisterMemoryReporter(mReporter);
mReporter = nullptr;
// Release all cached factories
mContractIDs.Clear();
mFactories.Clear(); // XXX release the objects, don't just clear
mLoaderMap.Clear();
mKnownModules.Clear();
mKnownStaticModules.Clear();
delete sStaticModules;
delete sModuleLocations;
// Unload libraries
mNativeModuleLoader.UnloadLibraries();
// delete arena for strings and small objects
PL_FinishArenaPool(&mArena);
mStatus = SHUTDOWN_COMPLETE;
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Shutdown complete."));
return NS_OK;
}
nsComponentManagerImpl::~nsComponentManagerImpl()
{
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Beginning destruction."));
if (SHUTDOWN_COMPLETE != mStatus)
Shutdown();
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Destroyed."));
}
NS_IMPL_ISUPPORTS5(nsComponentManagerImpl,
nsIComponentManager,
nsIServiceManager,
nsIComponentRegistrar,
nsISupportsWeakReference,
nsIInterfaceRequestor)
nsresult
nsComponentManagerImpl::GetInterface(const nsIID & uuid, void **result)
{
NS_WARNING("This isn't supported");
// fall through to QI as anything QIable is a superset of what can be
// got via the GetInterface()
return QueryInterface(uuid, result);
}
nsFactoryEntry *
nsComponentManagerImpl::GetFactoryEntry(const char *aContractID,
uint32_t aContractIDLen)
{
SafeMutexAutoLock lock(mLock);
return mContractIDs.Get(nsDependentCString(aContractID, aContractIDLen));
}
nsFactoryEntry *
nsComponentManagerImpl::GetFactoryEntry(const nsCID &aClass)
{
SafeMutexAutoLock lock(mLock);
return mFactories.Get(aClass);
}
already_AddRefed<nsIFactory>
nsComponentManagerImpl::FindFactory(const nsCID& aClass)
{
nsFactoryEntry* e = GetFactoryEntry(aClass);
if (!e)
return nullptr;
return e->GetFactory();
}
already_AddRefed<nsIFactory>
nsComponentManagerImpl::FindFactory(const char *contractID,
uint32_t aContractIDLen)
{
nsFactoryEntry *entry = GetFactoryEntry(contractID, aContractIDLen);
if (!entry)
return nullptr;
return entry->GetFactory();
}
/**
* GetClassObject()
*
* Given a classID, this finds the singleton ClassObject that implements the CID.
* Returns an interface of type aIID off the singleton classobject.
*/
NS_IMETHODIMP
nsComponentManagerImpl::GetClassObject(const nsCID &aClass, const nsIID &aIID,
void **aResult)
{
nsresult rv;
#ifdef PR_LOGGING
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_DEBUG))
{
char *buf = aClass.ToString();
PR_LogPrint("nsComponentManager: GetClassObject(%s)", buf);
if (buf)
NS_Free(buf);
}
#endif
PR_ASSERT(aResult != nullptr);
nsCOMPtr<nsIFactory> factory = FindFactory(aClass);
if (!factory)
return NS_ERROR_FACTORY_NOT_REGISTERED;
rv = factory->QueryInterface(aIID, aResult);
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("\t\tGetClassObject() %s", NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"));
return rv;
}
NS_IMETHODIMP
nsComponentManagerImpl::GetClassObjectByContractID(const char *contractID,
const nsIID &aIID,
void **aResult)
{
if (NS_WARN_IF(!aResult) ||
NS_WARN_IF(!contractID))
return NS_ERROR_INVALID_ARG;
nsresult rv;
#ifdef PR_LOGGING
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_DEBUG))
{
PR_LogPrint("nsComponentManager: GetClassObject(%s)", contractID);
}
#endif
nsCOMPtr<nsIFactory> factory = FindFactory(contractID, strlen(contractID));
if (!factory)
return NS_ERROR_FACTORY_NOT_REGISTERED;
rv = factory->QueryInterface(aIID, aResult);
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("\t\tGetClassObject() %s", NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"));
return rv;
}
/**
* CreateInstance()
*
* Create an instance of an object that implements an interface and belongs
* to the implementation aClass using the factory. The factory is immediately
* released and not held onto for any longer.
*/
NS_IMETHODIMP
nsComponentManagerImpl::CreateInstance(const nsCID &aClass,
nsISupports *aDelegate,
const nsIID &aIID,
void **aResult)
{
// test this first, since there's no point in creating a component during
// shutdown -- whether it's available or not would depend on the order it
// occurs in the list
if (gXPCOMShuttingDown) {
// When processing shutdown, don't process new GetService() requests
#ifdef SHOW_DENIED_ON_SHUTDOWN
nsXPIDLCString cid, iid;
cid.Adopt(aClass.ToString());
iid.Adopt(aIID.ToString());
fprintf(stderr, "Creating new instance on shutdown. Denied.\n"
" CID: %s\n IID: %s\n", cid.get(), iid.get());
#endif /* SHOW_DENIED_ON_SHUTDOWN */
return NS_ERROR_UNEXPECTED;
}
if (aResult == nullptr)
{
return NS_ERROR_NULL_POINTER;
}
*aResult = nullptr;
nsFactoryEntry *entry = GetFactoryEntry(aClass);
if (!entry)
return NS_ERROR_FACTORY_NOT_REGISTERED;
#ifdef SHOW_CI_ON_EXISTING_SERVICE
if (entry->mServiceObject) {
nsXPIDLCString cid;
cid.Adopt(aClass.ToString());
nsAutoCString message;
message = NS_LITERAL_CSTRING("You are calling CreateInstance \"") +
cid + NS_LITERAL_CSTRING("\" when a service for this CID already exists!");
NS_ERROR(message.get());
}
#endif
nsresult rv;
nsCOMPtr<nsIFactory> factory = entry->GetFactory();
if (factory)
{
rv = factory->CreateInstance(aDelegate, aIID, aResult);
if (NS_SUCCEEDED(rv) && !*aResult) {
NS_ERROR("Factory did not return an object but returned success!");
rv = NS_ERROR_SERVICE_NOT_FOUND;
}
}
else {
// Translate error values
rv = NS_ERROR_FACTORY_NOT_REGISTERED;
}
#ifdef PR_LOGGING
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_WARNING))
{
char *buf = aClass.ToString();
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("nsComponentManager: CreateInstance(%s) %s", buf,
NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"));
if (buf)
NS_Free(buf);
}
#endif
return rv;
}
/**
* CreateInstanceByContractID()
*
* A variant of CreateInstance() that creates an instance of the object that
* implements the interface aIID and whose implementation has a contractID aContractID.
*
* This is only a convenience routine that turns around can calls the
* CreateInstance() with classid and iid.
*/
NS_IMETHODIMP
nsComponentManagerImpl::CreateInstanceByContractID(const char *aContractID,
nsISupports *aDelegate,
const nsIID &aIID,
void **aResult)
{
if (NS_WARN_IF(!aContractID))
return NS_ERROR_INVALID_ARG;
// test this first, since there's no point in creating a component during
// shutdown -- whether it's available or not would depend on the order it
// occurs in the list
if (gXPCOMShuttingDown) {
// When processing shutdown, don't process new GetService() requests
#ifdef SHOW_DENIED_ON_SHUTDOWN
nsXPIDLCString iid;
iid.Adopt(aIID.ToString());
fprintf(stderr, "Creating new instance on shutdown. Denied.\n"
" ContractID: %s\n IID: %s\n", aContractID, iid.get());
#endif /* SHOW_DENIED_ON_SHUTDOWN */
return NS_ERROR_UNEXPECTED;
}
if (aResult == nullptr)
{
return NS_ERROR_NULL_POINTER;
}
*aResult = nullptr;
nsFactoryEntry *entry = GetFactoryEntry(aContractID, strlen(aContractID));
if (!entry)
return NS_ERROR_FACTORY_NOT_REGISTERED;
#ifdef SHOW_CI_ON_EXISTING_SERVICE
if (entry->mServiceObject) {
nsAutoCString message;
message =
NS_LITERAL_CSTRING("You are calling CreateInstance \"") +
nsDependentCString(aContractID) +
NS_LITERAL_CSTRING("\" when a service for this CID already exists! "
"Add it to abusedContracts to track down the service consumer.");
NS_ERROR(message.get());
}
#endif
nsresult rv;
nsCOMPtr<nsIFactory> factory = entry->GetFactory();
if (factory)
{
rv = factory->CreateInstance(aDelegate, aIID, aResult);
if (NS_SUCCEEDED(rv) && !*aResult) {
NS_ERROR("Factory did not return an object but returned success!");
rv = NS_ERROR_SERVICE_NOT_FOUND;
}
}
else {
// Translate error values
rv = NS_ERROR_FACTORY_NOT_REGISTERED;
}
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("nsComponentManager: CreateInstanceByContractID(%s) %s", aContractID,
NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"));
return rv;
}
static PLDHashOperator
FreeFactoryEntries(const nsID& aCID,
nsFactoryEntry* aEntry,
void* arg)
{
aEntry->mFactory = nullptr;
aEntry->mServiceObject = nullptr;
return PL_DHASH_NEXT;
}
nsresult
nsComponentManagerImpl::FreeServices()
{
NS_ASSERTION(gXPCOMShuttingDown, "Must be shutting down in order to free all services");
if (!gXPCOMShuttingDown)
return NS_ERROR_FAILURE;
mFactories.EnumerateRead(FreeFactoryEntries, nullptr);
return NS_OK;
}
// This should only ever be called within the monitor!
nsComponentManagerImpl::PendingServiceInfo*
nsComponentManagerImpl::AddPendingService(const nsCID& aServiceCID,
PRThread* aThread)
{
PendingServiceInfo* newInfo = mPendingServices.AppendElement();
if (newInfo) {
newInfo->cid = &aServiceCID;
newInfo->thread = aThread;
}
return newInfo;
}
// This should only ever be called within the monitor!
void
nsComponentManagerImpl::RemovePendingService(const nsCID& aServiceCID)
{
uint32_t pendingCount = mPendingServices.Length();
for (uint32_t index = 0; index < pendingCount; ++index) {
const PendingServiceInfo& info = mPendingServices.ElementAt(index);
if (info.cid->Equals(aServiceCID)) {
mPendingServices.RemoveElementAt(index);
return;
}
}
}
// This should only ever be called within the monitor!
PRThread*
nsComponentManagerImpl::GetPendingServiceThread(const nsCID& aServiceCID) const
{
uint32_t pendingCount = mPendingServices.Length();
for (uint32_t index = 0; index < pendingCount; ++index) {
const PendingServiceInfo& info = mPendingServices.ElementAt(index);
if (info.cid->Equals(aServiceCID)) {
return info.thread;
}
}
return nullptr;
}
NS_IMETHODIMP
nsComponentManagerImpl::GetService(const nsCID& aClass,
const nsIID& aIID,
void* *result)
{
// test this first, since there's no point in returning a service during
// shutdown -- whether it's available or not would depend on the order it
// occurs in the list
if (gXPCOMShuttingDown) {
// When processing shutdown, don't process new GetService() requests
#ifdef SHOW_DENIED_ON_SHUTDOWN
nsXPIDLCString cid, iid;
cid.Adopt(aClass.ToString());
iid.Adopt(aIID.ToString());
fprintf(stderr, "Getting service on shutdown. Denied.\n"
" CID: %s\n IID: %s\n", cid.get(), iid.get());
#endif /* SHOW_DENIED_ON_SHUTDOWN */
return NS_ERROR_UNEXPECTED;
}
// `service` must be released after the lock is released, so it must be
// declared before the lock in this C++ block.
nsCOMPtr<nsISupports> service;
MutexLock lock(mLock);
nsFactoryEntry* entry = mFactories.Get(aClass);
if (!entry)
return NS_ERROR_FACTORY_NOT_REGISTERED;
if (entry->mServiceObject) {
lock.Unlock();
return entry->mServiceObject->QueryInterface(aIID, result);
}
PRThread* currentPRThread = PR_GetCurrentThread();
MOZ_ASSERT(currentPRThread, "This should never be null!");
// Needed to optimize the event loop below.
nsIThread* currentThread = nullptr;
PRThread* pendingPRThread;
while ((pendingPRThread = GetPendingServiceThread(aClass))) {
if (pendingPRThread == currentPRThread) {
NS_ERROR("Recursive GetService!");
return NS_ERROR_NOT_AVAILABLE;
}
SafeMutexAutoUnlock unlockPending(mLock);
if (!currentThread) {
currentThread = NS_GetCurrentThread();
MOZ_ASSERT(currentThread, "This should never be null!");
}
// This will process a single event or yield the thread if no event is
// pending.
if (!NS_ProcessNextEvent(currentThread, false)) {
PR_Sleep(PR_INTERVAL_NO_WAIT);
}
}
// It's still possible that the other thread failed to create the
// service so we're not guaranteed to have an entry or service yet.
if (entry->mServiceObject) {
lock.Unlock();
return entry->mServiceObject->QueryInterface(aIID, result);
}
#ifdef DEBUG
PendingServiceInfo* newInfo =
#endif
AddPendingService(aClass, currentPRThread);
NS_ASSERTION(newInfo, "Failed to add info to the array!");
// We need to not be holding the service manager's lock while calling
// CreateInstance, because it invokes user code which could try to re-enter
// the service manager:
nsresult rv;
{
SafeMutexAutoUnlock unlock(mLock);
rv = CreateInstance(aClass, nullptr, aIID, getter_AddRefs(service));
}
if (NS_SUCCEEDED(rv) && !service) {
NS_ERROR("Factory did not return an object but returned success");
return NS_ERROR_SERVICE_NOT_FOUND;
}
#ifdef DEBUG
pendingPRThread = GetPendingServiceThread(aClass);
MOZ_ASSERT(pendingPRThread == currentPRThread,
"Pending service array has been changed!");
#endif
RemovePendingService(aClass);
if (NS_FAILED(rv))
return rv;
NS_ASSERTION(!entry->mServiceObject, "Created two instances of a service!");
entry->mServiceObject = service.forget();
lock.Unlock();
nsISupports** sresult = reinterpret_cast<nsISupports**>(result);
*sresult = entry->mServiceObject;
(*sresult)->AddRef();
return NS_OK;
}
NS_IMETHODIMP
nsComponentManagerImpl::IsServiceInstantiated(const nsCID & aClass,
const nsIID& aIID,
bool *result)
{
// Now we want to get the service if we already got it. If not, we don't want
// to create an instance of it. mmh!
// test this first, since there's no point in returning a service during
// shutdown -- whether it's available or not would depend on the order it
// occurs in the list
if (gXPCOMShuttingDown) {
// When processing shutdown, don't process new GetService() requests
#ifdef SHOW_DENIED_ON_SHUTDOWN
nsXPIDLCString cid, iid;
cid.Adopt(aClass.ToString());
iid.Adopt(aIID.ToString());
fprintf(stderr, "Checking for service on shutdown. Denied.\n"
" CID: %s\n IID: %s\n", cid.get(), iid.get());
#endif /* SHOW_DENIED_ON_SHUTDOWN */
return NS_ERROR_UNEXPECTED;
}
nsresult rv = NS_ERROR_SERVICE_NOT_AVAILABLE;
nsFactoryEntry* entry;
{
SafeMutexAutoLock lock(mLock);
entry = mFactories.Get(aClass);
}
if (entry && entry->mServiceObject) {
nsCOMPtr<nsISupports> service;
rv = entry->mServiceObject->QueryInterface(aIID, getter_AddRefs(service));
*result = (service!=nullptr);
}
return rv;
}
NS_IMETHODIMP nsComponentManagerImpl::IsServiceInstantiatedByContractID(const char *aContractID,
const nsIID& aIID,
bool *result)
{
// Now we want to get the service if we already got it. If not, we don't want
// to create an instance of it. mmh!
// test this first, since there's no point in returning a service during
// shutdown -- whether it's available or not would depend on the order it
// occurs in the list
if (gXPCOMShuttingDown) {
// When processing shutdown, don't process new GetService() requests
#ifdef SHOW_DENIED_ON_SHUTDOWN
nsXPIDLCString iid;
iid.Adopt(aIID.ToString());
fprintf(stderr, "Checking for service on shutdown. Denied.\n"
" ContractID: %s\n IID: %s\n", aContractID, iid.get());
#endif /* SHOW_DENIED_ON_SHUTDOWN */
return NS_ERROR_UNEXPECTED;
}
nsresult rv = NS_ERROR_SERVICE_NOT_AVAILABLE;
nsFactoryEntry *entry;
{
SafeMutexAutoLock lock(mLock);
entry = mContractIDs.Get(nsDependentCString(aContractID));
}
if (entry && entry->mServiceObject) {
nsCOMPtr<nsISupports> service;
rv = entry->mServiceObject->QueryInterface(aIID, getter_AddRefs(service));
*result = (service!=nullptr);
}
return rv;
}
NS_IMETHODIMP
nsComponentManagerImpl::GetServiceByContractID(const char* aContractID,
const nsIID& aIID,
void* *result)
{
// test this first, since there's no point in returning a service during
// shutdown -- whether it's available or not would depend on the order it
// occurs in the list
if (gXPCOMShuttingDown) {
// When processing shutdown, don't process new GetService() requests
#ifdef SHOW_DENIED_ON_SHUTDOWN
nsXPIDLCString iid;
iid.Adopt(aIID.ToString());
fprintf(stderr, "Getting service on shutdown. Denied.\n"
" ContractID: %s\n IID: %s\n", aContractID, iid.get());
#endif /* SHOW_DENIED_ON_SHUTDOWN */
return NS_ERROR_UNEXPECTED;
}
// `service` must be released after the lock is released, so it must be
// declared before the lock in this C++ block.
nsCOMPtr<nsISupports> service;
MutexLock lock(mLock);
nsFactoryEntry *entry = mContractIDs.Get(nsDependentCString(aContractID));
if (!entry)
return NS_ERROR_FACTORY_NOT_REGISTERED;
if (entry->mServiceObject) {
// We need to not be holding the service manager's monitor while calling
// QueryInterface, because it invokes user code which could try to re-enter
// the service manager, or try to grab some other lock/monitor/condvar
// and deadlock, e.g. bug 282743.
// `entry` is valid until XPCOM shutdown, so we can safely use it after
// exiting the lock.
lock.Unlock();
return entry->mServiceObject->QueryInterface(aIID, result);
}
PRThread* currentPRThread = PR_GetCurrentThread();
MOZ_ASSERT(currentPRThread, "This should never be null!");
// Needed to optimize the event loop below.
nsIThread* currentThread = nullptr;
PRThread* pendingPRThread;
while ((pendingPRThread = GetPendingServiceThread(*entry->mCIDEntry->cid))) {
if (pendingPRThread == currentPRThread) {
NS_ERROR("Recursive GetService!");
return NS_ERROR_NOT_AVAILABLE;
}
SafeMutexAutoUnlock unlockPending(mLock);
if (!currentThread) {
currentThread = NS_GetCurrentThread();
MOZ_ASSERT(currentThread, "This should never be null!");
}
// This will process a single event or yield the thread if no event is
// pending.
if (!NS_ProcessNextEvent(currentThread, false)) {
PR_Sleep(PR_INTERVAL_NO_WAIT);
}
}
if (currentThread && entry->mServiceObject) {
// If we have a currentThread then we must have waited on another thread
// to create the service. Grab it now if that succeeded.
lock.Unlock();
return entry->mServiceObject->QueryInterface(aIID, result);
}
#ifdef DEBUG
PendingServiceInfo* newInfo =
#endif
AddPendingService(*entry->mCIDEntry->cid, currentPRThread);
NS_ASSERTION(newInfo, "Failed to add info to the array!");
// We need to not be holding the service manager's lock while calling
// CreateInstance, because it invokes user code which could try to re-enter
// the service manager:
nsresult rv;
{
SafeMutexAutoUnlock unlock(mLock);
rv = CreateInstanceByContractID(aContractID, nullptr, aIID,
getter_AddRefs(service));
}
if (NS_SUCCEEDED(rv) && !service) {
NS_ERROR("Factory did not return an object but returned success");
return NS_ERROR_SERVICE_NOT_FOUND;
}
#ifdef DEBUG
pendingPRThread = GetPendingServiceThread(*entry->mCIDEntry->cid);
MOZ_ASSERT(pendingPRThread == currentPRThread,
"Pending service array has been changed!");
#endif
RemovePendingService(*entry->mCIDEntry->cid);
if (NS_FAILED(rv))
return rv;
NS_ASSERTION(!entry->mServiceObject, "Created two instances of a service!");
entry->mServiceObject = service.forget();
lock.Unlock();
nsISupports** sresult = reinterpret_cast<nsISupports**>(result);
*sresult = entry->mServiceObject;
(*sresult)->AddRef();
return NS_OK;
}
already_AddRefed<mozilla::ModuleLoader>
nsComponentManagerImpl::LoaderForExtension(const nsACString& aExt)
{
nsCOMPtr<mozilla::ModuleLoader> loader = mLoaderMap.Get(aExt);
if (!loader) {
loader = do_GetServiceFromCategory("module-loader",
PromiseFlatCString(aExt).get());
if (!loader)
return nullptr;
mLoaderMap.Put(aExt, loader);
}
return loader.forget();
}
NS_IMETHODIMP
nsComponentManagerImpl::RegisterFactory(const nsCID& aClass,
const char* aName,
const char* aContractID,
nsIFactory* aFactory)
{
if (!aFactory) {
// If a null factory is passed in, this call just wants to reset
// the contract ID to point to an existing CID entry.
if (!aContractID)
return NS_ERROR_INVALID_ARG;
SafeMutexAutoLock lock(mLock);
nsFactoryEntry* oldf = mFactories.Get(aClass);
if (!oldf)
return NS_ERROR_FACTORY_NOT_REGISTERED;
mContractIDs.Put(nsDependentCString(aContractID), oldf);
return NS_OK;
}
nsAutoPtr<nsFactoryEntry> f(new nsFactoryEntry(aClass, aFactory));
SafeMutexAutoLock lock(mLock);
nsFactoryEntry* oldf = mFactories.Get(aClass);
if (oldf)
return NS_ERROR_FACTORY_EXISTS;
if (aContractID)
mContractIDs.Put(nsDependentCString(aContractID), f);
mFactories.Put(aClass, f.forget());
return NS_OK;
}
NS_IMETHODIMP
nsComponentManagerImpl::UnregisterFactory(const nsCID& aClass,
nsIFactory* aFactory)
{
// Don't release the dying factory or service object until releasing
// the component manager monitor.
nsCOMPtr<nsIFactory> dyingFactory;
nsCOMPtr<nsISupports> dyingServiceObject;
{
SafeMutexAutoLock lock(mLock);
nsFactoryEntry* f = mFactories.Get(aClass);
if (!f || f->mFactory != aFactory)
return NS_ERROR_FACTORY_NOT_REGISTERED;
mFactories.Remove(aClass);
// This might leave a stale contractid -> factory mapping in
// place, so null out the factory entry (see
// nsFactoryEntry::GetFactory)
f->mFactory.swap(dyingFactory);
f->mServiceObject.swap(dyingServiceObject);
}
return NS_OK;
}
NS_IMETHODIMP
nsComponentManagerImpl::AutoRegister(nsIFile* aLocation)
{
XRE_AddManifestLocation(NS_COMPONENT_LOCATION, aLocation);
return NS_OK;
}
NS_IMETHODIMP
nsComponentManagerImpl::AutoUnregister(nsIFile* aLocation)
{
NS_ERROR("AutoUnregister not implemented.");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsComponentManagerImpl::RegisterFactoryLocation(const nsCID& aCID,
const char* aClassName,
const char* aContractID,
nsIFile* aFile,
const char* aLoaderStr,
const char* aType)
{
NS_ERROR("RegisterFactoryLocation not implemented.");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsComponentManagerImpl::UnregisterFactoryLocation(const nsCID& aCID,
nsIFile* aFile)
{
NS_ERROR("UnregisterFactoryLocation not implemented.");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsComponentManagerImpl::IsCIDRegistered(const nsCID & aClass,
bool *_retval)
{
*_retval = (nullptr != GetFactoryEntry(aClass));
return NS_OK;
}
NS_IMETHODIMP
nsComponentManagerImpl::IsContractIDRegistered(const char *aClass,
bool *_retval)
{
if (NS_WARN_IF(!aClass))
return NS_ERROR_INVALID_ARG;
nsFactoryEntry *entry = GetFactoryEntry(aClass, strlen(aClass));
if (entry)
*_retval = true;
else
*_retval = false;
return NS_OK;
}
static PLDHashOperator
EnumerateCIDHelper(const nsID& id, nsFactoryEntry* entry, void* closure)
{
nsCOMArray<nsISupports> *array = static_cast<nsCOMArray<nsISupports>*>(closure);
nsCOMPtr<nsISupportsID> wrapper = new nsSupportsIDImpl();
wrapper->SetData(&id);
array->AppendObject(wrapper);
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsComponentManagerImpl::EnumerateCIDs(nsISimpleEnumerator **aEnumerator)
{
nsCOMArray<nsISupports> array;
mFactories.EnumerateRead(EnumerateCIDHelper, &array);
return NS_NewArrayEnumerator(aEnumerator, array);
}
static PLDHashOperator
EnumerateContractsHelper(const nsACString& contract, nsFactoryEntry* entry, void* closure)
{
nsTArray<nsCString>* array = static_cast<nsTArray<nsCString>*>(closure);
array->AppendElement(contract);
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsComponentManagerImpl::EnumerateContractIDs(nsISimpleEnumerator **aEnumerator)
{
nsTArray<nsCString>* array = new nsTArray<nsCString>;
mContractIDs.EnumerateRead(EnumerateContractsHelper, array);
nsCOMPtr<nsIUTF8StringEnumerator> e;
nsresult rv = NS_NewAdoptingUTF8StringEnumerator(getter_AddRefs(e), array);
if (NS_FAILED(rv))
return rv;
return CallQueryInterface(e, aEnumerator);
}
NS_IMETHODIMP
nsComponentManagerImpl::CIDToContractID(const nsCID & aClass,
char **_retval)
{
NS_ERROR("CIDTOContractID not implemented");
return NS_ERROR_FACTORY_NOT_REGISTERED;
}
NS_IMETHODIMP
nsComponentManagerImpl::ContractIDToCID(const char *aContractID,
nsCID * *_retval)
{
{
SafeMutexAutoLock lock(mLock);
nsFactoryEntry* entry = mContractIDs.Get(nsDependentCString(aContractID));
if (entry) {
*_retval = (nsCID*) NS_Alloc(sizeof(nsCID));
**_retval = *entry->mCIDEntry->cid;
return NS_OK;
}
}
*_retval = nullptr;
return NS_ERROR_FACTORY_NOT_REGISTERED;
}
static size_t
SizeOfFactoriesEntryExcludingThis(nsIDHashKey::KeyType aKey,
nsFactoryEntry* const &aData,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
return aData->SizeOfIncludingThis(aMallocSizeOf);
}
static size_t
SizeOfContractIDsEntryExcludingThis(nsCStringHashKey::KeyType aKey,
nsFactoryEntry* const &aData,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
// We don't measure the nsFactoryEntry data because its owned by mFactories
// (which measures them in SizeOfFactoriesEntryExcludingThis).
return aKey.SizeOfExcludingThisMustBeUnshared(aMallocSizeOf);
}
size_t
nsComponentManagerImpl::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf)
{
size_t n = aMallocSizeOf(this);
n += mLoaderMap.SizeOfExcludingThis(nullptr, aMallocSizeOf);
n += mFactories.SizeOfExcludingThis(SizeOfFactoriesEntryExcludingThis, aMallocSizeOf);
n += mContractIDs.SizeOfExcludingThis(SizeOfContractIDsEntryExcludingThis, aMallocSizeOf);
n += sStaticModules->SizeOfIncludingThis(aMallocSizeOf);
n += sModuleLocations->SizeOfIncludingThis(aMallocSizeOf);
n += mKnownStaticModules.SizeOfExcludingThis(aMallocSizeOf);
n += mKnownModules.SizeOfExcludingThis(nullptr, aMallocSizeOf);
n += PL_SizeOfArenaPoolExcludingPool(&mArena, aMallocSizeOf);
n += mPendingServices.SizeOfExcludingThis(aMallocSizeOf);
// Measurement of the following members may be added later if DMD finds it is
// worthwhile:
// - mLoaderMap's keys and values
// - mMon
// - sStaticModules' entries
// - sModuleLocations' entries
// - mNativeModuleLoader
// - mKnownStaticModules' entries?
// - mKnownModules' keys and values?
return n;
}
////////////////////////////////////////////////////////////////////////////////
// nsFactoryEntry
////////////////////////////////////////////////////////////////////////////////
nsFactoryEntry::nsFactoryEntry(const mozilla::Module::CIDEntry* entry,
nsComponentManagerImpl::KnownModule* module)
: mCIDEntry(entry)
, mModule(module)
{
}
nsFactoryEntry::nsFactoryEntry(const nsCID& aCID, nsIFactory* factory)
: mCIDEntry(nullptr)
, mModule(nullptr)
, mFactory(factory)
{
mozilla::Module::CIDEntry* e = new mozilla::Module::CIDEntry();
nsCID* cid = new nsCID;
*cid = aCID;
e->cid = cid;
mCIDEntry = e;
}
nsFactoryEntry::~nsFactoryEntry()
{
// If this was a RegisterFactory entry, we own the CIDEntry/CID
if (!mModule) {
delete mCIDEntry->cid;
delete mCIDEntry;
}
}
already_AddRefed<nsIFactory>
nsFactoryEntry::GetFactory()
{
nsComponentManagerImpl::gComponentManager->mLock.AssertNotCurrentThreadOwns();
if (!mFactory) {
// RegisterFactory then UnregisterFactory can leave an entry in mContractIDs
// pointing to an unusable nsFactoryEntry.
if (!mModule)
return nullptr;
if (!mModule->Load())
return nullptr;
// Don't set mFactory directly, it needs to be locked
nsCOMPtr<nsIFactory> factory;
if (mModule->Module()->getFactoryProc) {
factory = mModule->Module()->getFactoryProc(*mModule->Module(),
*mCIDEntry);
}
else if (mCIDEntry->getFactoryProc) {
factory = mCIDEntry->getFactoryProc(*mModule->Module(), *mCIDEntry);
}
else {
NS_ASSERTION(mCIDEntry->constructorProc, "no getfactory or constructor");
factory = new mozilla::GenericFactory(mCIDEntry->constructorProc);
}
if (!factory)
return nullptr;
SafeMutexAutoLock lock(nsComponentManagerImpl::gComponentManager->mLock);
// Threads can race to set mFactory
if (!mFactory) {
factory.swap(mFactory);
}
}
nsCOMPtr<nsIFactory> factory = mFactory;
return factory.forget();
}
size_t
nsFactoryEntry::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf)
{
size_t n = aMallocSizeOf(this);
// Measurement of the following members may be added later if DMD finds it is
// worthwhile:
// - mCIDEntry;
// - mModule;
// - mFactory;
// - mServiceObject;
return n;
}
////////////////////////////////////////////////////////////////////////////////
// Static Access Functions
////////////////////////////////////////////////////////////////////////////////
nsresult
NS_GetComponentManager(nsIComponentManager* *result)
{
if (!nsComponentManagerImpl::gComponentManager)
return NS_ERROR_NOT_INITIALIZED;
NS_ADDREF(*result = nsComponentManagerImpl::gComponentManager);
return NS_OK;
}
nsresult
NS_GetServiceManager(nsIServiceManager* *result)
{
if (!nsComponentManagerImpl::gComponentManager)
return NS_ERROR_NOT_INITIALIZED;
NS_ADDREF(*result = nsComponentManagerImpl::gComponentManager);
return NS_OK;
}
nsresult
NS_GetComponentRegistrar(nsIComponentRegistrar* *result)
{
if (!nsComponentManagerImpl::gComponentManager)
return NS_ERROR_NOT_INITIALIZED;
NS_ADDREF(*result = nsComponentManagerImpl::gComponentManager);
return NS_OK;
}
EXPORT_XPCOM_API(nsresult)
XRE_AddStaticComponent(const mozilla::Module* aComponent)
{
nsComponentManagerImpl::InitializeStaticModules();
nsComponentManagerImpl::sStaticModules->AppendElement(aComponent);
if (nsComponentManagerImpl::gComponentManager &&
nsComponentManagerImpl::NORMAL == nsComponentManagerImpl::gComponentManager->mStatus)
nsComponentManagerImpl::gComponentManager->RegisterModule(aComponent, nullptr);
return NS_OK;
}
NS_IMETHODIMP
nsComponentManagerImpl::AddBootstrappedManifestLocation(nsIFile* aLocation)
{
nsString path;
nsresult rv = aLocation->GetPath(path);
if (NS_FAILED(rv))
return rv;
if (Substring(path, path.Length() - 4).Equals(NS_LITERAL_STRING(".xpi"))) {
return XRE_AddJarManifestLocation(NS_BOOTSTRAPPED_LOCATION, aLocation);
}
nsCOMPtr<nsIFile> manifest =
CloneAndAppend(aLocation, NS_LITERAL_CSTRING("chrome.manifest"));
return XRE_AddManifestLocation(NS_BOOTSTRAPPED_LOCATION, manifest);
}
NS_IMETHODIMP
nsComponentManagerImpl::RemoveBootstrappedManifestLocation(nsIFile* aLocation)
{
nsCOMPtr<nsIChromeRegistry> cr = mozilla::services::GetChromeRegistryService();
if (!cr)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIFile> manifest;
nsString path;
nsresult rv = aLocation->GetPath(path);
if (NS_FAILED(rv))
return rv;
nsComponentManagerImpl::ComponentLocation elem;
elem.type = NS_BOOTSTRAPPED_LOCATION;
if (Substring(path, path.Length() - 4).Equals(NS_LITERAL_STRING(".xpi"))) {
elem.location.Init(aLocation, "chrome.manifest");
} else {
nsCOMPtr<nsIFile> lf = CloneAndAppend(aLocation, NS_LITERAL_CSTRING("chrome.manifest"));
elem.location.Init(lf);
}
// Remove reference.
nsComponentManagerImpl::sModuleLocations->RemoveElement(elem, ComponentLocationComparator());
rv = cr->CheckForNewChrome();
return rv;
}
NS_IMETHODIMP
nsComponentManagerImpl::GetManifestLocations(nsIArray **aLocations)
{
NS_ENSURE_ARG_POINTER(aLocations);
*aLocations = nullptr;
if (!sModuleLocations)
return NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIMutableArray> locations = nsArray::Create();
nsresult rv;
for (uint32_t i = 0; i < sModuleLocations->Length(); ++i) {
ComponentLocation& l = sModuleLocations->ElementAt(i);
FileLocation loc = l.location;
nsCString uriString;
loc.GetURIString(uriString);
nsCOMPtr<nsIURI> uri;
rv = NS_NewURI(getter_AddRefs(uri), uriString);
if (NS_SUCCEEDED(rv))
locations->AppendElement(uri, false);
}
locations.forget(aLocations);
return NS_OK;
}
EXPORT_XPCOM_API(nsresult)
XRE_AddManifestLocation(NSLocationType aType, nsIFile* aLocation)
{
nsComponentManagerImpl::InitializeModuleLocations();
nsComponentManagerImpl::ComponentLocation* c =
nsComponentManagerImpl::sModuleLocations->AppendElement();
c->type = aType;
c->location.Init(aLocation);
if (nsComponentManagerImpl::gComponentManager &&
nsComponentManagerImpl::NORMAL == nsComponentManagerImpl::gComponentManager->mStatus)
nsComponentManagerImpl::gComponentManager->RegisterManifest(aType, c->location, false);
return NS_OK;
}
EXPORT_XPCOM_API(nsresult)
XRE_AddJarManifestLocation(NSLocationType aType, nsIFile* aLocation)
{
nsComponentManagerImpl::InitializeModuleLocations();
nsComponentManagerImpl::ComponentLocation* c =
nsComponentManagerImpl::sModuleLocations->AppendElement();
c->type = aType;
c->location.Init(aLocation, "chrome.manifest");
if (nsComponentManagerImpl::gComponentManager &&
nsComponentManagerImpl::NORMAL == nsComponentManagerImpl::gComponentManager->mStatus)
nsComponentManagerImpl::gComponentManager->RegisterManifest(aType, c->location, false);
return NS_OK;
}
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