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352 lines
13 KiB
C++
352 lines
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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 MPL, 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 MPL, 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 "xpcom-private.h"
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#include "nsIComponentManager.h"
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#include "nsIComponentRegistrar.h"
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#include "nsIComponentManagerObsolete.h"
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#include "nsCategoryManager.h"
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#include "nsIServiceManager.h"
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#include "nsILocalFile.h"
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#include "nsIModule.h"
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#include "nsIModuleLoader.h"
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#include "nsStaticComponentLoader.h"
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#include "nsNativeComponentLoader.h"
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#include "nsIFactory.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 "nsIFile.h"
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#include "plarena.h"
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#include "nsCOMArray.h"
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#include "nsDataHashtable.h"
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#include "nsTArray.h"
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struct nsFactoryEntry;
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class nsIServiceManager;
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struct PRThread;
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#define NS_COMPONENTMANAGER_CID \
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{ /* 91775d60-d5dc-11d2-92fb-00e09805570f */ \
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0x91775d60, \
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0xd5dc, \
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0x11d2, \
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{0x92, 0xfb, 0x00, 0xe0, 0x98, 0x05, 0x57, 0x0f} \
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}
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/* keys for registry use */
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extern const char xpcomKeyName[];
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extern const char xpcomComponentsKeyName[];
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extern const char lastModValueName[];
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extern const char fileSizeValueName[];
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extern const char nativeComponentType[];
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extern const char staticComponentType[];
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typedef int LoaderType;
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// Predefined loader types.
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#define NS_LOADER_TYPE_NATIVE -1
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#define NS_LOADER_TYPE_STATIC -2
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#define NS_LOADER_TYPE_INVALID -3
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#ifdef DEBUG
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#define XPCOM_CHECK_PENDING_CIDS
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// Array of Loaders and their type strings
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struct nsLoaderdata {
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nsCOMPtr<nsIModuleLoader> loader;
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nsCString type;
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};
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// Deferred modules are kept as a nsTArray of this type. This is not a nested
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// class so that nsStaticComponentLoader.h can forward-declare it.
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struct DeferredModule
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{
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DeferredModule() :
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type(nsnull), modTime(0) { }
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const char *type;
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nsCOMPtr<nsILocalFile> file;
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nsCString location;
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nsCOMPtr<nsIModule> module;
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PRInt64 modTime;
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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 nsIComponentRegistrar,
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public nsSupportsWeakReference,
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public nsIInterfaceRequestor,
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public nsIServiceManagerObsolete,
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public nsIComponentManagerObsolete
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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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// Since the nsIComponentManagerObsolete and nsIComponentManager share some of the
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// same interface function names, we have to manually define the functions here.
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// The only function that is in nsIComponentManagerObsolete and is in nsIComponentManager
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// is GetClassObjectContractID.
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//
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// nsIComponentManager function not in nsIComponentManagerObsolete:
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NS_IMETHOD GetClassObjectByContractID(const char *aContractID,
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const nsIID &aIID,
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void **_retval);
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NS_DECL_NSICOMPONENTMANAGEROBSOLETE
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// Since the nsIComponentManagerObsolete and nsIComponentRegistrar share some of the
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// same interface function names, we have to manually define the functions here.
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// the only function that is shared is UnregisterFactory
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NS_IMETHOD AutoRegister(nsIFile *aSpec);
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NS_IMETHOD AutoUnregister(nsIFile *aSpec);
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NS_IMETHOD RegisterFactory(const nsCID & aClass, const char *aClassName, const char *aContractID, nsIFactory *aFactory);
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// NS_IMETHOD UnregisterFactory(const nsCID & aClass, nsIFactory *aFactory);
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NS_IMETHOD RegisterFactoryLocation(const nsCID & aClass, const char *aClassName, const char *aContractID, nsIFile *aFile, const char *loaderStr, const char *aType);
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NS_IMETHOD UnregisterFactoryLocation(const nsCID & aClass, nsIFile *aFile);
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NS_IMETHOD IsCIDRegistered(const nsCID & aClass, PRBool *_retval);
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NS_IMETHOD IsContractIDRegistered(const char *aClass, PRBool *_retval);
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NS_IMETHOD EnumerateCIDs(nsISimpleEnumerator **_retval);
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NS_IMETHOD EnumerateContractIDs(nsISimpleEnumerator **_retval);
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NS_IMETHOD CIDToContractID(const nsCID & aClass, char **_retval);
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NS_IMETHOD ContractIDToCID(const char *aContractID, nsCID * *_retval);
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nsresult RegistryLocationForFile(nsIFile* aFile,
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nsCString& aResult);
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nsresult FileForRegistryLocation(const nsCString &aLocation,
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nsILocalFile **aSpec);
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NS_DECL_NSISERVICEMANAGER
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NS_DECL_NSISERVICEMANAGEROBSOLETE
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// nsComponentManagerImpl methods:
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nsComponentManagerImpl();
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static nsComponentManagerImpl* gComponentManager;
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nsresult Init(nsStaticModuleInfo const *aStaticModules,
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PRUint32 aStaticModuleCount);
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// NOTE: XPCOM initialization must call either ReadPersistentRegistry or
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// AutoRegister to fully initialize the nsComponentManagerImpl.
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nsresult WritePersistentRegistry();
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nsresult ReadPersistentRegistry();
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nsresult Shutdown(void);
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nsresult FreeServices();
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nsresult
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NS_GetService(const char *aContractID, const nsIID& aIID, PRBool aDontCreate, nsISupports** result);
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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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PRUint32 aContractIDLen,
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const char *aRegistryName,
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PRUint32 aRegistryNameLen,
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PRBool aReplace, PRBool aPersist,
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const char *aType);
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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
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// NS_LOADER_TYPE_INVALID if loader type cannot be determined.
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LoaderType GetLoaderType(const char *typeStr);
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LoaderType AddLoaderType(const char *typeStr);
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const char* StringForLoaderType(LoaderType aType) {
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return mLoaderData[aType].type.get();
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}
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nsIModuleLoader* LoaderForType(LoaderType aType);
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int GetLoaderCount() { return mLoaderData.Length(); }
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void GetAllLoaders();
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nsresult FindFactory(const char *contractID, PRUint32 aContractIDLen, nsIFactory **aFactory) ;
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nsresult LoadFactory(nsFactoryEntry *aEntry, nsIFactory **aFactory);
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nsFactoryEntry *GetFactoryEntry(const char *aContractID,
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PRUint32 aContractIDLen);
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nsFactoryEntry *GetFactoryEntry(const nsCID &aClass);
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nsresult SyncComponentsInDir(PRInt32 when, nsIFile *dirSpec);
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// NOTE: HashContractID operates on the hash table with ContractIDs,
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// for thread-safety it should only be invoked from inside mMon.
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nsresult HashContractID(const char *acontractID, PRUint32 aContractIDLen,
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nsFactoryEntry *fe_ptr);
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void DeleteContractIDEntriesByCID(const nsCID* aClass, nsIFactory* factory);
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nsresult AutoRegisterImpl(nsIFile* inDirSpec,
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nsCOMArray<nsILocalFile> &aLeftovers,
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nsTArray<DeferredModule> &aDeferred);
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nsresult AutoRegisterDirectory(nsIFile* aComponentFile,
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nsCOMArray<nsILocalFile> &aLeftovers,
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nsTArray<DeferredModule> &aDeferred);
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nsresult AutoRegisterComponentsList(nsIFile* inDir,
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PRFileDesc* fd,
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nsCOMArray<nsILocalFile>& aLeftovers,
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nsTArray<DeferredModule>& aDeferred);
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nsresult AutoRegisterComponent(nsILocalFile* aComponentFile,
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nsTArray<DeferredModule> &aDeferred,
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LoaderType minLoader = NS_LOADER_TYPE_NATIVE);
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void LoadLeftoverComponents(nsCOMArray<nsILocalFile> &aLeftovers,
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nsTArray<DeferredModule> &aDeferred,
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LoaderType minLoader);
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void LoadDeferredModules(nsTArray<DeferredModule> &aDeferred);
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PLDHashTable mFactories;
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PLDHashTable mContractIDs;
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PRMonitor* mMon;
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nsNativeModuleLoader mNativeModuleLoader;
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nsStaticModuleLoader mStaticModuleLoader;
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nsCOMPtr<nsIFile> mComponentsDir;
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PRInt32 mComponentsOffset;
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nsCOMPtr<nsIFile> mGREComponentsDir;
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PRInt32 mGREComponentsOffset;
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nsCOMPtr<nsIFile> mRegistryFile;
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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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nsTArray<nsLoaderdata> mLoaderData;
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nsDataHashtable<nsHashableHashKey, PRInt64> mAutoRegEntries;
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PRBool mRegistryDirty;
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nsCOMPtr<nsCategoryManager> mCategoryManager;
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PLArenaPool mArena;
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struct PendingServiceInfo {
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const nsCID* cid;
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PRThread* thread;
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};
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inline PendingServiceInfo* AddPendingService(const nsCID& aServiceCID,
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PRThread* aThread);
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inline void RemovePendingService(const nsCID& aServiceCID);
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inline PRThread* GetPendingServiceThread(const nsCID& aServiceCID) const;
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nsTArray<PendingServiceInfo> mPendingServices;
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private:
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~nsComponentManagerImpl();
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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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////////////////////////////////////////////////////////////////////////////////
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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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struct nsFactoryEntry {
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nsFactoryEntry(const nsCID &aClass,
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LoaderType aLoaderType,
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const char *aLocationKey,
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nsFactoryEntry *aParent = nsnull);
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nsFactoryEntry(const nsCID &aClass,
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nsIFactory *aFactory,
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nsFactoryEntry *aParent = nsnull) :
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mCid(aClass),
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mLoaderType(NS_LOADER_TYPE_INVALID),
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mFactory(aFactory),
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mParent(aParent) {
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mLocationKey = nsnull;
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}
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~nsFactoryEntry();
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void ReInit(LoaderType aLoaderType,
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const char *aLocationKey);
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nsresult GetFactory(nsIFactory **aFactory);
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nsCID mCid;
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LoaderType mLoaderType;
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const char *mLocationKey;
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nsCOMPtr<nsIFactory> mFactory;
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nsCOMPtr<nsISupports> mServiceObject;
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nsFactoryEntry *mParent;
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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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PRUint32 mContractIDLen;
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nsFactoryEntry *mFactoryEntry;
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};
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#endif // nsComponentManager_h__
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