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gecko-dev/xpcom/build/nsXPComInit.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsIRegistry.h"
#include "nscore.h"
#include "nsCOMPtr.h"
#include "nsObserverService.h"
#include "nsObserverList.h"
#include "nsObserver.h"
#include "nsProperties.h"
#include "nsIProperties.h"
#include "nsPersistentProperties.h"
#include "nsScriptableInputStream.h"
#include "nsMemoryImpl.h"
#include "nsErrorService.h"
#include "nsLogging.h"
#include "nsArena.h"
#include "nsByteBuffer.h"
#ifdef PAGE_MANAGER
#include "nsPageMgr.h"
#endif
#include "nsSupportsArray.h"
#include "nsSupportsPrimitives.h"
#include "nsConsoleService.h"
#include "nsExceptionService.h"
#include "nsComponentManager.h"
#include "nsIServiceManager.h"
#include "nsGenericFactory.h"
#include "nsEventQueueService.h"
#include "nsEventQueue.h"
#include "nsIProxyObjectManager.h"
#include "nsProxyEventPrivate.h" // access to the impl of nsProxyObjectManager for the generic factory registration.
#include "xptinfo.h"
#include "nsIInterfaceInfoManager.h"
#include "nsThread.h"
#include "nsProcess.h"
#include "nsFileSpecImpl.h"
#include "nsSpecialSystemDirectory.h"
#include "nsILocalFile.h"
#include "nsLocalFile.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsAppFileLocationProvider.h"
#include "nsICategoryManager.h"
#include "nsFastLoadService.h"
#include "nsAtomService.h"
#include "nsTraceRefcnt.h"
#include "nsTimelineService.h"
#ifdef GC_LEAK_DETECTOR
#include "nsLeakDetector.h"
#endif
#ifndef XPCOM_STANDALONE
// Include files that dont reside under xpcom
// Our goal was to make this zero. But... :-(
#include "nsICaseConversion.h"
#endif /* XPCOM_STANDALONE */
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kMemoryCID, NS_MEMORY_CID);
static NS_DEFINE_CID(kLoggingServiceCID, NS_LOGGINGSERVICE_CID);
static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
NS_GENERIC_FACTORY_CONSTRUCTOR(nsProcess);
// ds/nsISupportsPrimitives
NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsIDImpl)
NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsStringImpl)
NS_GENERIC_FACTORY_CONSTRUCTOR(nsSupportsWStringImpl)
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(nsConsoleService);
NS_GENERIC_FACTORY_CONSTRUCTOR(nsAtomService);
NS_GENERIC_FACTORY_CONSTRUCTOR(nsExceptionService);
#ifdef MOZ_TIMELINE
NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimelineService);
#endif
////////////////////////////////////////////////////////////////////////////////
// XPCOM initialization
//
// To Control the order of initialization of these key components I am putting
// this function.
//
// - nsServiceManager
// - nsComponentManager
// - nsRegistry
//
// Here are key points to remember:
// - A global of all these need to exist. nsServiceManager is an independent object.
// nsComponentManager uses both the globalServiceManager and its own registry.
//
// - A static object of both the nsComponentManager and nsServiceManager
// are in use. Hence InitXPCOM() gets triggered from both
// NS_GetGlobale{Service/Component}Manager() calls.
//
// - There exists no global Registry. Registry can be created from the component manager.
//
static nsresult
RegisterGenericFactory(nsIComponentManager* compMgr,
nsModuleComponentInfo *info)
{
nsresult rv;
nsIGenericFactory* fact;
rv = NS_NewGenericFactory(&fact, info);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterFactory(info->mCID, info->mDescription,
info->mContractID, fact, PR_TRUE);
NS_RELEASE(fact);
return rv;
}
// Globals in xpcom
nsComponentManagerImpl* nsComponentManagerImpl::gComponentManager = NULL;
#ifndef XPCOM_STANDALONE
nsICaseConversion *gCaseConv = NULL;
#endif /* XPCOM_STANDALONE */
nsIProperties *gDirectoryService = NULL;
extern nsIServiceManager* gServiceManager;
extern PRBool gShuttingDown;
// For each class that wishes to support nsIClassInfo, add a line like this
// NS_DECL_CLASSINFO(nsMyClass)
#define COMPONENT(NAME, Ctor) \
{ NS_##NAME##_CLASSNAME, NS_##NAME##_CID, NS_##NAME##_CONTRACTID, Ctor }
#define COMPONENT_CI(NAME, Ctor, Class) \
{ NS_##NAME##_CLASSNAME, NS_##NAME##_CID, NS_##NAME##_CONTRACTID, Ctor, \
NULL, NULL, NULL, NS_CI_INTERFACE_GETTER_NAME(Class), NULL, \
&NS_CLASSINFO_NAME(Class) }
static nsModuleComponentInfo components[] = {
COMPONENT(MEMORY, nsMemoryImpl::Create),
#define NS_ERRORSERVICE_CLASSNAME NS_ERRORSERVICE_NAME
COMPONENT(ERRORSERVICE, nsErrorService::Create),
#ifdef NS_ENABLE_LOGGING
COMPONENT(LOGGINGSERVICE, nsLoggingService::Create),
#endif
COMPONENT(ARENA, ArenaImpl::Create),
COMPONENT(BYTEBUFFER, ByteBufferImpl::Create),
COMPONENT(SCRIPTABLEINPUTSTREAM, nsScriptableInputStream::Create),
#ifdef PAGE_MANAGER
COMPONENT(PAGEMANAGER, nsPageMgr::Create),
#endif
COMPONENT(PROPERTIES, nsProperties::Create),
#define NS_PERSISTENTPROPERTIES_CID NS_IPERSISTENTPROPERTIES_CID /* sigh */
COMPONENT(PERSISTENTPROPERTIES, nsPersistentProperties::Create),
COMPONENT(SUPPORTSARRAY, nsSupportsArray::Create),
COMPONENT(CONSOLESERVICE, nsConsoleServiceConstructor),
COMPONENT(EXCEPTIONSERVICE, nsExceptionServiceConstructor),
COMPONENT(ATOMSERVICE, nsAtomServiceConstructor),
#ifdef MOZ_TIMELINE
COMPONENT(TIMELINESERVICE, nsTimelineServiceConstructor),
#endif
COMPONENT(OBSERVER, nsObserver::Create),
COMPONENT(OBSERVERSERVICE, nsObserverService::Create),
COMPONENT(GENERICFACTORY, nsGenericFactory::Create),
COMPONENT(EVENTQUEUESERVICE, nsEventQueueServiceImpl::Create),
COMPONENT(EVENTQUEUE, nsEventQueueImpl::Create),
COMPONENT(THREAD, nsThread::Create),
COMPONENT(THREADPOOL, nsThreadPool::Create),
#define NS_XPCOMPROXY_CID NS_PROXYEVENT_MANAGER_CID
COMPONENT(XPCOMPROXY, nsProxyObjectManager::Create),
#define COMPONENT_SUPPORTS(TYPE, Type) \
COMPONENT(SUPPORTS_##TYPE, nsSupports##Type##ImplConstructor)
COMPONENT_SUPPORTS(ID, ID),
COMPONENT_SUPPORTS(STRING, String),
COMPONENT_SUPPORTS(WSTRING, WString),
COMPONENT_SUPPORTS(PRBOOL, PRBool),
COMPONENT_SUPPORTS(PRUINT8, PRUint8),
COMPONENT_SUPPORTS(PRUINT16, PRUint16),
COMPONENT_SUPPORTS(PRUINT32, PRUint32),
COMPONENT_SUPPORTS(PRUINT64, PRUint64),
COMPONENT_SUPPORTS(PRTIME, PRTime),
COMPONENT_SUPPORTS(CHAR, Char),
COMPONENT_SUPPORTS(PRINT16, PRInt16),
COMPONENT_SUPPORTS(PRINT32, PRInt32),
COMPONENT_SUPPORTS(PRINT64, PRInt64),
COMPONENT_SUPPORTS(FLOAT, Float),
COMPONENT_SUPPORTS(DOUBLE, Double),
COMPONENT_SUPPORTS(VOID, Void),
COMPONENT_SUPPORTS(INTERFACE_POINTER, InterfacePointer),
#undef COMPONENT_SUPPORTS
COMPONENT(LOCAL_FILE, nsLocalFile::nsLocalFileConstructor),
COMPONENT(DIRECTORY_SERVICE, nsDirectoryService::Create),
COMPONENT(PROCESS, nsProcessConstructor),
COMPONENT(FILESPEC, nsFileSpecImpl::Create),
COMPONENT(DIRECTORYITERATOR, nsDirectoryIteratorImpl::Create),
COMPONENT(FASTLOADSERVICE, nsFastLoadService::Create)
};
#undef COMPONENT
const int components_length = sizeof(components) / sizeof(components[0]);
nsresult NS_COM NS_InitXPCOM(nsIServiceManager* *result,
nsIFile* binDirectory)
{
return NS_InitXPCOM2(result, binDirectory, nsnull);
}
nsresult NS_COM NS_InitXPCOM2(nsIServiceManager* *result,
nsIFile* binDirectory,
nsIDirectoryServiceProvider* appFileLocationProvider)
{
nsresult rv = NS_OK;
#ifdef NS_BUILD_REFCNT_LOGGING
nsTraceRefcnt::Startup();
#endif
// Establish the main thread here.
rv = nsIThread::SetMainThread();
if (NS_FAILED(rv)) return rv;
// Startup the memory manager
rv = nsMemoryImpl::Startup();
if (NS_FAILED(rv)) return rv;
NS_StartupLocalFile();
StartupSpecialSystemDirectory();
// 1. Create the Global Service Manager
nsIServiceManager* servMgr = NULL;
if (gServiceManager == NULL)
{
rv = NS_NewServiceManager(&servMgr);
if (NS_FAILED(rv)) return rv;
gServiceManager = servMgr;
if (result)
{
NS_ADDREF(servMgr);
*result = servMgr;
}
}
// 2. Create the Component Manager and register with global service manager
// It is understood that the component manager can use the global service manager.
nsComponentManagerImpl *compMgr = NULL;
if (nsComponentManagerImpl::gComponentManager == NULL)
{
compMgr = new nsComponentManagerImpl();
if (compMgr == NULL)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(compMgr);
rv = nsDirectoryService::Create(nsnull,
NS_GET_IID(nsIProperties),
(void**)&gDirectoryService);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDirectoryService> dirService = do_QueryInterface(gDirectoryService);
if (!dirService)
return NS_ERROR_NO_INTERFACE;
rv = dirService->Init();
if (NS_FAILED(rv))
return rv;
PRBool value;
if (binDirectory)
{
rv = binDirectory->IsDirectory(&value);
if (NS_SUCCEEDED(rv) && value)
gDirectoryService->Define(NS_XPCOM_INIT_CURRENT_PROCESS_DIR, binDirectory);
//Since people are still using the nsSpecialSystemDirectory, we should init it.
char* path;
binDirectory->GetPath(&path);
nsFileSpec spec(path);
nsMemory::Free(path);
nsSpecialSystemDirectory::Set(nsSpecialSystemDirectory::Moz_BinDirectory, &spec);
}
if (!appFileLocationProvider) {
appFileLocationProvider = new nsAppFileLocationProvider;
if (!appFileLocationProvider)
return NS_ERROR_OUT_OF_MEMORY;
}
rv = dirService->RegisterProvider(appFileLocationProvider);
if (NS_FAILED(rv)) return rv;
rv = compMgr->Init();
if (NS_FAILED(rv))
{
NS_RELEASE(compMgr);
return rv;
}
nsComponentManagerImpl::gComponentManager = compMgr;
}
nsCOMPtr<nsIMemory> memory = getter_AddRefs(nsMemory::GetGlobalMemoryService());
rv = servMgr->RegisterService(kMemoryCID, memory);
if (NS_FAILED(rv)) return rv;
rv = servMgr->RegisterService(kComponentManagerCID, NS_STATIC_CAST(nsIComponentManager*, compMgr));
if (NS_FAILED(rv)) return rv;
#ifdef GC_LEAK_DETECTOR
rv = NS_InitLeakDetector();
if (NS_FAILED(rv)) return rv;
#endif
// 3. Register the global services with the component manager so that
// clients can create new objects.
// Registry
nsIFactory *registryFactory = NULL;
rv = NS_RegistryGetFactory(&registryFactory);
if (NS_FAILED(rv)) return rv;
NS_DEFINE_CID(kRegistryCID, NS_REGISTRY_CID);
rv = compMgr->RegisterFactory(kRegistryCID,
NS_REGISTRY_CLASSNAME,
NS_REGISTRY_CONTRACTID,
registryFactory, PR_TRUE);
NS_RELEASE(registryFactory);
if (NS_FAILED(rv)) return rv;
// Category Manager
{
nsCOMPtr<nsIFactory> categoryManagerFactory;
if ( NS_FAILED(rv = NS_CategoryManagerGetFactory(getter_AddRefs(categoryManagerFactory))) )
return rv;
NS_DEFINE_CID(kCategoryManagerCID, NS_CATEGORYMANAGER_CID);
rv = compMgr->RegisterFactory(kCategoryManagerCID,
NS_CATEGORYMANAGER_CLASSNAME,
NS_CATEGORYMANAGER_CONTRACTID,
categoryManagerFactory,
PR_TRUE);
if ( NS_FAILED(rv) )
return rv;
}
for (int i = 0; i < components_length; i++)
RegisterGenericFactory(compMgr, &components[i]);
// Prepopulate registry for performance
// Ignore return value. It is ok if this fails.
nsComponentManagerImpl::gComponentManager->PlatformPrePopulateRegistry();
// Pay the cost at startup time of starting this singleton.
nsIInterfaceInfoManager* iim = XPTI_GetInterfaceInfoManager();
NS_IF_RELEASE(iim);
// get the logging service so that it gets registered with the service
// manager, and later unregistered
#ifdef NS_ENABLE_LOGGING
nsCOMPtr<nsILoggingService> logServ = do_GetService(kLoggingServiceCID, &rv);
#endif
return rv;
}
//
// NS_ShutdownXPCOM()
//
// The shutdown sequence for xpcom would be
//
// - 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
// - 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
//
nsresult NS_COM NS_ShutdownXPCOM(nsIServiceManager* servMgr)
{
nsrefcnt cnt;
// Notify observers of xpcom shutting down
nsresult rv = NS_OK;
{
// Block it so that the COMPtr will get deleted before we hit
// servicemanager shutdown
nsCOMPtr<nsIObserverService> observerService =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv))
{
nsIServiceManager *mgr; // NO COMPtr as we dont release the service manager
rv = nsServiceManager::GetGlobalServiceManager(&mgr);
if (NS_SUCCEEDED(rv))
{
nsAutoString topic;
topic.AssignWithConversion(NS_XPCOM_SHUTDOWN_OBSERVER_ID);
(void) observerService->Notify(mgr, topic.get(), nsnull);
}
}
}
// grab the event queue so that we can process events one last time before exiting
nsCOMPtr <nsIEventQueue> currentQ;
{
nsCOMPtr<nsIEventQueueService> eventQService =
do_GetService(kEventQueueServiceCID, &rv);
if (eventQService) {
eventQService->GetThreadEventQueue(NS_CURRENT_THREAD, getter_AddRefs(currentQ));
}
}
// XPCOM is officially in shutdown mode NOW
// Set this only after the observers have been notified as this
// will cause servicemanager to become inaccessible.
gShuttingDown = PR_TRUE;
// We may have AddRef'd for the caller of NS_InitXPCOM, so release it
// here again:
NS_IF_RELEASE(servMgr);
// Shutdown global servicemanager
nsServiceManager::ShutdownGlobalServiceManager(NULL);
if (currentQ) {
currentQ->ProcessPendingEvents();
currentQ = 0;
}
#ifndef XPCOM_STANDALONE
// Release the global case converter
NS_IF_RELEASE(gCaseConv);
#endif /* XPCOM_STANDALONE */
// Release the directory service
NS_IF_RELEASE(gDirectoryService);
// Shutdown nsLocalFile string conversion
NS_ShutdownLocalFile();
// Shutdown xpcom. This will release all loaders and cause others holding
// a refcount to the component manager to release it.
rv = (nsComponentManagerImpl::gComponentManager)->Shutdown();
NS_ASSERTION(NS_SUCCEEDED(rv), "Component Manager shutdown failed.");
// 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
XPTI_FreeInterfaceInfoManager();
// Finally, release the component manager last because it unloads the
// libraries:
NS_RELEASE2(nsComponentManagerImpl::gComponentManager, cnt);
NS_WARN_IF_FALSE(cnt == 0, "Component Manager being held past XPCOM shutdown.");
#ifdef DEBUG
extern void _FreeAutoLockStatics();
_FreeAutoLockStatics();
#endif
ShutdownSpecialSystemDirectory();
nsMemoryImpl::Shutdown();
nsThread::Shutdown();
NS_PurgeAtomTable();
#ifdef NS_BUILD_REFCNT_LOGGING
nsTraceRefcnt::DumpStatistics();
nsTraceRefcnt::ResetStatistics();
nsTraceRefcnt::Shutdown();
#endif
#ifdef GC_LEAK_DETECTOR
// Shutdown the Leak detector.
NS_ShutdownLeakDetector();
#endif
return NS_OK;
}
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