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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 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsXPCOM.h"
#include "nsXPCOMPrivate.h"
#include "nsIRegistry.h"
#include "nscore.h"
#include "nsCOMPtr.h"
#include "nsObserverList.h"
#include "nsObserver.h"
#include "nsObserverService.h"
#include "nsProperties.h"
#include "nsIProperties.h"
#include "nsPersistentProperties.h"
#include "nsScriptableInputStream.h"
#include "nsMemoryImpl.h"
#include "nsErrorService.h"
#include "nsArena.h"
#include "nsByteBuffer.h"
#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 "nsTimerImpl.h"
#include "TimerThread.h"
#include "nsThread.h"
#include "nsProcess.h"
#include "nsFileSpecImpl.h"
#include "nsSpecialSystemDirectory.h"
#include "nsEmptyEnumerator.h"
#include "nsILocalFile.h"
#include "nsLocalFile.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsICategoryManager.h"
#include "nsStringStream.h"
#include "nsMultiplexInputStream.h"
#include "nsFastLoadService.h"
#include "nsAtomService.h"
#include "nsAtomTable.h"
#include "nsTraceRefcnt.h"
#include "nsTimelineService.h"
#include "nsVariant.h"
#ifdef GC_LEAK_DETECTOR
#include "nsLeakDetector.h"
#endif
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kMemoryCID, NS_MEMORY_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);
NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimerImpl);
NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimerManager);
NS_GENERIC_FACTORY_CONSTRUCTOR(nsVariant);
#ifdef MOZ_TIMELINE
NS_GENERIC_FACTORY_CONSTRUCTOR(nsTimelineService);
#endif
static NS_METHOD
nsXPTIInterfaceInfoManagerGetSingleton(nsISupports* outer,
const nsIID& aIID,
void* *aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
NS_ENSURE_TRUE(!outer, NS_ERROR_NO_AGGREGATION);
nsCOMPtr<nsIInterfaceInfoManager> iim(dont_AddRef(XPTI_GetInterfaceInfoManager()));
if (!iim) {
return NS_ERROR_FAILURE;
}
return iim->QueryInterface(aIID, aInstancePtr);
}
////////////////////////////////////////////////////////////////////////////////
// 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,
const nsModuleComponentInfo *info)
{
nsresult rv;
nsIGenericFactory* fact;
rv = NS_NewGenericFactory(&fact, info);
if (NS_FAILED(rv)) return rv;
// what I want to do here is QI for a Component Registration Manager. Since this
// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
nsCOMPtr<nsIComponentRegistrar> registrar = do_QueryInterface(compMgr, &rv);
if (registrar)
rv = registrar->RegisterFactory(info->mCID,
info->mDescription,
info->mContractID,
fact);
NS_RELEASE(fact);
return rv;
}
nsComponentManagerImpl* nsComponentManagerImpl::gComponentManager = NULL;
nsIProperties *gDirectoryService = NULL;
PRBool gXPCOMShuttingDown = PR_FALSE;
// 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 const nsModuleComponentInfo components[] = {
// ugh
#define NS_MEMORY_CONTRACTID "@mozilla.org/xpcom/memory-service;1"
#define NS_MEMORY_CLASSNAME "Global Memory Service"
COMPONENT(MEMORY, nsMemoryImpl::Create),
#define NS_ERRORSERVICE_CLASSNAME NS_ERRORSERVICE_NAME
COMPONENT(ERRORSERVICE, nsErrorService::Create),
COMPONENT(ARENA, ArenaImpl::Create),
COMPONENT(BYTEBUFFER, ByteBufferImpl::Create),
COMPONENT(SCRIPTABLEINPUTSTREAM, nsScriptableInputStream::Create),
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),
COMPONENT(TIMER, nsTimerImplConstructor),
COMPONENT(TIMERMANAGER, nsTimerManagerConstructor),
#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(STRINGINPUTSTREAM, nsStringInputStreamConstructor),
COMPONENT(MULTIPLEXINPUTSTREAM, nsMultiplexInputStreamConstructor),
COMPONENT(FASTLOADSERVICE, nsFastLoadService::Create),
COMPONENT(VARIANT, nsVariantConstructor),
COMPONENT(INTERFACEINFOMANAGER_SERVICE, nsXPTIInterfaceInfoManagerGetSingleton)
};
#undef COMPONENT
const int components_length = sizeof(components) / sizeof(components[0]);
// gMemory will be freed during shutdown.
static nsIMemory* gMemory = nsnull;
nsresult NS_COM NS_GetMemoryManager(nsIMemory* *result)
{
nsresult rv = NS_OK;
if (!gMemory)
{
rv = nsMemoryImpl::Create(nsnull,
NS_GET_IID(nsIMemory),
(void**)&gMemory);
}
NS_IF_ADDREF(*result = gMemory);
return rv;
}
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();
// Start the directory service so that the component manager init can use it.
rv = nsDirectoryService::Create(nsnull,
NS_GET_IID(nsIProperties),
(void**)&gDirectoryService);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDirectoryService> dirService = do_QueryInterface(gDirectoryService, &rv);
if (NS_FAILED(rv))
return rv;
rv = dirService->Init();
if (NS_FAILED(rv))
return rv;
// Create the Component/Service Manager
nsComponentManagerImpl *compMgr = NULL;
if (nsComponentManagerImpl::gComponentManager == NULL)
{
compMgr = new nsComponentManagerImpl();
if (compMgr == NULL)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(compMgr);
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) {
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;
if (result) {
nsIServiceManager *serviceManager =
NS_STATIC_CAST(nsIServiceManager*, compMgr);
NS_ADDREF(*result = serviceManager);
}
}
nsCOMPtr<nsIMemory> memory;
NS_GetMemoryManager(getter_AddRefs(memory));
// dougt - these calls will be moved into a new interface when nsIComponentManager is frozen.
rv = compMgr->RegisterService(kMemoryCID, memory);
if (NS_FAILED(rv)) return rv;
rv = compMgr->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
// 2. 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);
nsCOMPtr<nsIEventQueueService> eventQService(do_GetService(NS_EVENTQUEUESERVICE_CONTRACTID, &rv));
if ( NS_FAILED(rv) ) return rv;
rv = eventQService->CreateThreadEventQueue();
if ( NS_FAILED(rv) ) return rv;
return rv;
}
static nsVoidArray gExitRoutines;
static void CallExitRoutines()
{
PRInt32 count = gExitRoutines.Count();
for (PRInt32 i = 0; i < count; i++) {
XPCOMExitRoutine func = (XPCOMExitRoutine) gExitRoutines.ElementAt(i);
func();
}
gExitRoutines.Clear();
}
nsresult NS_COM
NS_RegisterXPCOMExitRoutine(XPCOMExitRoutine exitRoutine, PRUint32 priority)
{
// priority are not used right now. It will need to be implemented as more
// classes are moved into the glue library --dougt
PRBool okay = gExitRoutines.AppendElement((void*)exitRoutine);
return okay ? NS_OK : NS_ERROR_FAILURE;
}
nsresult NS_COM
NS_UnregisterXPCOMExitRoutine(XPCOMExitRoutine exitRoutine)
{
PRBool okay = gExitRoutines.RemoveElement((void*)exitRoutine);
return okay ? NS_OK : NS_ERROR_FAILURE;
}
//
// 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)
{
// 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("@mozilla.org/observer-service;1", &rv);
if (NS_SUCCEEDED(rv))
{
nsCOMPtr<nsIServiceManager> mgr;
rv = NS_GetServiceManager(getter_AddRefs(mgr));
if (NS_SUCCEEDED(rv))
{
(void) observerService->NotifyObservers(mgr,
NS_XPCOM_SHUTDOWN_OBSERVER_ID,
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.
gXPCOMShuttingDown = 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
nsComponentManagerImpl::gComponentManager->FreeServices();
nsServiceManager::ShutdownGlobalServiceManager(nsnull);
if (currentQ) {
currentQ->ProcessPendingEvents();
currentQ = 0;
}
// Release the directory service
NS_IF_RELEASE(gDirectoryService);
// Shutdown nsLocalFile string conversion
NS_ShutdownLocalFile();
// Shutdown the timer thread and all timers that might still be alive before
// shutting down the component manager
nsTimerImpl::Shutdown();
// 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:
if (nsComponentManagerImpl::gComponentManager) {
nsrefcnt cnt;
NS_RELEASE2(nsComponentManagerImpl::gComponentManager, cnt);
NS_WARN_IF_FALSE(cnt == 0, "Component Manager being held past XPCOM shutdown.");
}
nsComponentManagerImpl::gComponentManager = nsnull;
#ifdef DEBUG
extern void _FreeAutoLockStatics();
_FreeAutoLockStatics();
#endif
ShutdownSpecialSystemDirectory();
EmptyEnumeratorImpl::Shutdown();
nsMemoryImpl::Shutdown();
NS_IF_RELEASE(gMemory);
nsThread::Shutdown();
NS_PurgeAtomTable();
CallExitRoutines();
#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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