зеркало из https://github.com/mozilla/gecko-dev.git
358 строки
13 KiB
C++
358 строки
13 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsComponentManager_h__
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#define nsComponentManager_h__
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#include "nsXPCOM.h"
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#include "nsIComponentLoader.h"
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#include "nsNativeComponentLoader.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsIFactory.h"
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#include "nsRegistry.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "pldhash.h"
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#include "prtime.h"
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#include "prmon.h"
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#include "nsCOMPtr.h"
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#include "nsWeakReference.h"
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#include "nsXPIDLString.h"
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#include "nsIFile.h"
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class nsFactoryEntry;
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class nsDll;
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class nsIServiceManager;
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// Registry Factory creation function defined in nsRegistry.cpp
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// We hook into this function locally to create and register the registry
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// Since noone outside xpcom needs to know about this and nsRegistry.cpp
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// does not have a local include file, we are putting this definition
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// here rather than in nsIRegistry.h
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extern "C" NS_EXPORT nsresult NS_RegistryGetFactory(nsIFactory** aFactory);
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// Predefined loader types. Do not change the numbers.
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// NATIVE should be 0 as it is being used as the first array index.
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#define NS_COMPONENT_TYPE_NATIVE 0
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#define NS_COMPONENT_TYPE_FACTORY_ONLY -1
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// this define means that the factory entry only has a ContractID
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// to service mapping and has no cid mapping.
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#define NS_COMPONENT_TYPE_SERVICE_ONLY -2
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extern const char XPCOM_LIB_PREFIX[];
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////////////////////////////////////////////////////////////////////////////////
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class nsComponentManagerImpl
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: public nsIComponentManager,
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public nsIServiceManager,
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public nsSupportsWeakReference,
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public nsIInterfaceRequestor,
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public nsIServiceManagerObsolete
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIINTERFACEREQUESTOR
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NS_DECL_NSICOMPONENTMANAGER
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NS_DECL_NSISERVICEMANAGER
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// nsIServiceManagerObsolete
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NS_IMETHOD
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RegisterService(const nsCID& aClass, nsISupports* aService);
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NS_IMETHOD
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UnregisterService(const nsCID& aClass);
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NS_IMETHOD
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GetService(const nsCID& aClass, const nsIID& aIID,
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nsISupports* *result,
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nsIShutdownListener* shutdownListener);
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NS_IMETHOD
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ReleaseService(const nsCID& aClass, nsISupports* service,
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nsIShutdownListener* shutdownListener);
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NS_IMETHOD
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RegisterService(const char* aContractID, nsISupports* aService);
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NS_IMETHOD
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UnregisterService(const char* aContractID);
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NS_IMETHOD
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GetService(const char* aContractID, const nsIID& aIID,
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nsISupports* *result,
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nsIShutdownListener* shutdownListener);
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NS_IMETHOD
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ReleaseService(const char* aContractID, nsISupports* service,
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nsIShutdownListener* shutdownListener);
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// nsComponentManagerImpl methods:
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nsComponentManagerImpl();
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virtual ~nsComponentManagerImpl();
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static nsComponentManagerImpl* gComponentManager;
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nsresult Init(void);
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nsresult PlatformPrePopulateRegistry();
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nsresult Shutdown(void);
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nsresult FreeServices();
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friend class nsFactoryEntry;
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friend class nsServiceManager;
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friend nsresult
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NS_GetService(const char *aContractID, const nsIID& aIID, PRBool aDontCreate, nsISupports** result);
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protected:
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nsresult RegistryNameForLib(const char *aLibName, char **aRegistryName);
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nsresult RegisterComponentCommon(const nsCID &aClass,
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const char *aClassName,
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const char *aContractID,
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const char *aRegistryName,
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PRBool aReplace, PRBool aPersist,
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const char *aType);
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nsresult AddComponentToRegistry(const nsCID &aCID, const char *aClassName,
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const char *aContractID,
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const char *aRegistryName,
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const char *aType);
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nsresult GetLoaderForType(int aType,
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nsIComponentLoader **aLoader);
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nsresult FindFactory(const char *contractID, nsIFactory **aFactory) ;
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nsresult LoadFactory(nsFactoryEntry *aEntry, nsIFactory **aFactory);
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nsFactoryEntry *GetFactoryEntry(const char *aContractID, int checkRegistry = -1);
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nsFactoryEntry *GetFactoryEntry(const nsCID &aClass, int checkRegistry = -1);
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nsFactoryEntry *GetFactoryEntry(const nsCID &aClass, nsIDKey &cidKey, int checkRegistry = -1);
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nsresult SyncComponentsInDir(PRInt32 when, nsIFile *dirSpec);
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nsresult SelfRegisterDll(nsDll *dll);
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nsresult SelfUnregisterDll(nsDll *dll);
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nsresult HashContractID(const char *acontractID, nsFactoryEntry *fe_ptr);
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nsresult HashContractID(const char *acontractID, const nsCID &aClass, nsFactoryEntry **fe_ptr = NULL);
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nsresult HashContractID(const char *acontractID, const nsCID &aClass, nsIDKey &cidKey, nsFactoryEntry **fe_ptr = NULL);
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nsresult UnloadLibraries(nsIServiceManager *servmgr, PRInt32 when);
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// The following functions are the only ones that operate on the persistent
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// registry
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nsresult PlatformInit(void);
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nsresult PlatformVersionCheck(nsRegistryKey *aXPCOMRootKey);
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nsresult PlatformRegister(const char *cidString, const char *className, const char *contractID, nsDll *dll);
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nsresult PlatformUnregister(const char *cidString, const char *aLibrary);
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nsresult PlatformFind(const nsCID &aCID, nsFactoryEntry* *result);
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nsresult PlatformContractIDToCLSID(const char *aContractID, nsCID *aClass);
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nsresult PlatformCLSIDToContractID(const nsCID *aClass, char* *aClassName, char* *aContractID);
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// Convert a loader type string into an index into the loader data
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// array. Empty loader types are converted to NATIVE. Returns -1 if
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// loader type cannot be determined.
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int GetLoaderType(const char *typeStr);
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// Add a loader type if not already known. Return the typeIndex
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// if the loader type is either added or already there; -1 if
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// there was an error
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int AddLoaderType(const char *typeStr);
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private:
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nsresult AutoRegisterImpl(PRInt32 when, nsIFile *inDirSpec);
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protected:
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PLDHashTable mFactories;
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PLDHashTable mContractIDs;
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PRMonitor* mMon;
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nsIRegistry* mRegistry;
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nsRegistryKey mXPCOMKey;
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nsRegistryKey mClassesKey;
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nsRegistryKey mCLSIDKey;
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PRBool mPrePopulationDone;
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nsRegistryKey mLoadersKey;
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nsNativeComponentLoader *mNativeComponentLoader;
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nsIComponentLoader *mStaticComponentLoader;
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nsCOMPtr<nsIFile> mComponentsDir;
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PRInt32 mComponentsOffset;
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// Shutdown
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#define NS_SHUTDOWN_NEVERHAPPENED 0
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#define NS_SHUTDOWN_INPROGRESS 1
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#define NS_SHUTDOWN_COMPLETE 2
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PRUint32 mShuttingDown;
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// Array of Loaders and their type strings
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struct nsLoaderdata {
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nsIComponentLoader *loader;
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const char *type;
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};
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nsLoaderdata *mLoaderData;
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int mNLoaderData;
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int mMaxNLoaderData;
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};
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#define NS_MAX_FILENAME_LEN 1024
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#define NS_ERROR_IS_DIR NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_XPCOM, 24)
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#if defined(XP_UNIX) && !defined(XP_MACOSX)
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/* The default registry on the unix system is $HOME/.mozilla/registry per
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* vr_findGlobalRegName(). vr_findRegFile() will create the registry file
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* if it doesn't exist. But it wont create directories.
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*
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* Hence we need to create the directory if it doesn't exist already.
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*
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* Why create it here as opposed to the app ?
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* ------------------------------------------
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* The app cannot create the directory in main() as most of the registry
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* and initialization happens due to use of static variables.
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* And we dont want to be dependent on the order in which
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* these static stuff happen.
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*
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* Permission for the $HOME/.mozilla will be Read,Write,Execute
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* for user only. Nothing to group and others.
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*/
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#define NS_MOZILLA_DIR_NAME ".mozilla"
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#define NS_MOZILLA_DIR_PERMISSION 00700
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#endif /* XP_UNIX */
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#ifdef XP_BEOS
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#define NS_MOZILLA_DIR_NAME "mozilla"
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#define NS_MOZILLA_DIR_PERMISSION 00700
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#endif /* XP_BEOS */
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/**
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* When using the registry we put a version number in it.
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* If the version number that is in the registry doesn't match
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* the following, we ignore the registry. This lets news versions
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* of the software deal with old formats of registry and not
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*
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* alpha0.20 : First time we did versioning
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* alpha0.30 : Changing autoreg to begin registration from ./components on unix
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* alpha0.40 : repository -> component manager
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* alpha0.50 : using nsIRegistry
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* alpha0.60 : xpcom 2.0 landing
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* alpha0.70 : using nsIFileSpec. PRTime -> PRUint32
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* alpha0.90 : using nsIComponentLoader, abs:/rel:/lib:, shaver-cleanup
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* alpha0.92 : restructured registry keys
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* alpha0.93 : changed component names to native strings instead of UTF8
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*/
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#define NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING "alpha0.93"
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class nsServiceEntry {
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public:
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nsServiceEntry(nsISupports* service, nsFactoryEntry* factEntry);
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~nsServiceEntry();
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nsresult AddListener(nsIShutdownListener* listener);
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nsresult RemoveListener(nsIShutdownListener* listener);
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nsresult NotifyListeners(void);
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nsISupports* mObject;
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nsVoidArray* mListeners;
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PRBool mShuttingDown;
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nsFactoryEntry* mFactoryEntry; // non-owning back pointer
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};
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Class: nsFactoryEntry()
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*
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* There are two types of FactoryEntries.
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*
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* 1. {CID, dll} mapping.
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* Factory is a consequence of the dll. These can be either session
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* specific or persistent based on whether we write this
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* to the registry or not.
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*
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* 2. {CID, factory} mapping
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* These are strictly session specific and in memory only.
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*/
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class nsFactoryEntry {
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public:
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nsFactoryEntry(const nsCID &aClass, const char *location, int aType);
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nsFactoryEntry(const nsCID &aClass, nsIFactory *aFactory);
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~nsFactoryEntry();
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nsresult ReInit(const nsCID &aClass, const char *location, int aType);
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nsresult ReInit(const nsCID &aClass, nsIFactory *aFactory);
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nsresult GetFactory(nsIFactory **aFactory,
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nsComponentManagerImpl * mgr) {
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if (factory) {
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*aFactory = factory.get();
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NS_ADDREF(*aFactory);
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return NS_OK;
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}
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if (typeIndex < 0)
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return NS_ERROR_FAILURE;
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nsresult rv;
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nsCOMPtr<nsIComponentLoader> loader;
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rv = mgr->GetLoaderForType(typeIndex, getter_AddRefs(loader));
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if(NS_FAILED(rv))
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return rv;
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rv = loader->GetFactory(cid, location, mgr->mLoaderData[typeIndex].type, aFactory);
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if (NS_SUCCEEDED(rv))
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factory = do_QueryInterface(*aFactory);
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return rv;
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}
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nsCID cid;
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char *location;
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nsCOMPtr<nsIFactory> factory;
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nsServiceEntry *mServiceEntry;
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// This is an index into the mLoaderData array that holds the type string and the loader
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int typeIndex;
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};
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////////////////////////////////////////////////////////////////////////////////
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struct nsFactoryTableEntry : public PLDHashEntryHdr {
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nsFactoryEntry *mFactoryEntry;
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};
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struct nsContractIDTableEntry : public PLDHashEntryHdr {
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char *mContractID;
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nsFactoryEntry *mFactoryEntry;
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};
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#endif // nsComponentManager_h__
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