gecko/xpcom/components/nsComponentManager.h

345 lines
13 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 of 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsComponentManager_h__
#define nsComponentManager_h__
#include "nsXPCOM.h"
#include "xpcom-private.h"
#include "nsIComponentManager.h"
#include "nsIComponentRegistrar.h"
#include "nsIComponentManagerObsolete.h"
#include "nsCategoryManager.h"
#include "nsIServiceManager.h"
#include "nsILocalFile.h"
#include "nsIModule.h"
#include "nsIModuleLoader.h"
#include "nsStaticComponentLoader.h"
#include "nsNativeComponentLoader.h"
#include "nsIFactory.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "pldhash.h"
#include "prtime.h"
#include "prmon.h"
#include "nsCOMPtr.h"
#include "nsWeakReference.h"
#include "nsIFile.h"
#include "plarena.h"
#include "nsCOMArray.h"
#include "nsDataHashtable.h"
#include "nsTArray.h"
struct nsFactoryEntry;
class nsIServiceManager;
struct PRThread;
#define NS_COMPONENTMANAGER_CID \
{ /* 91775d60-d5dc-11d2-92fb-00e09805570f */ \
0x91775d60, \
0xd5dc, \
0x11d2, \
{0x92, 0xfb, 0x00, 0xe0, 0x98, 0x05, 0x57, 0x0f} \
}
/* keys for registry use */
extern const char xpcomKeyName[];
extern const char xpcomComponentsKeyName[];
extern const char lastModValueName[];
extern const char fileSizeValueName[];
extern const char nativeComponentType[];
extern const char staticComponentType[];
typedef int LoaderType;
// Predefined loader types.
#define NS_LOADER_TYPE_NATIVE -1
#define NS_LOADER_TYPE_STATIC -2
#define NS_LOADER_TYPE_INVALID -3
#ifdef DEBUG
#define XPCOM_CHECK_PENDING_CIDS
#endif
////////////////////////////////////////////////////////////////////////////////
// Array of Loaders and their type strings
struct nsLoaderdata {
nsCOMPtr<nsIModuleLoader> loader;
nsCString type;
};
// Deferred modules are kept as a nsTArray of this type. This is not a nested
// class so that nsStaticComponentLoader.h can forward-declare it.
struct DeferredModule
{
DeferredModule() :
type(nsnull), modTime(0) { }
const char *type;
nsCOMPtr<nsILocalFile> file;
nsCString location;
nsCOMPtr<nsIModule> module;
PRInt64 modTime;
};
class nsComponentManagerImpl
: public nsIComponentManager,
public nsIServiceManager,
public nsIComponentRegistrar,
public nsSupportsWeakReference,
public nsIInterfaceRequestor,
public nsIServiceManagerObsolete,
public nsIComponentManagerObsolete
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIINTERFACEREQUESTOR
// Since the nsIComponentManagerObsolete and nsIComponentManager share some of the
// same interface function names, we have to manually define the functions here.
// The only function that is in nsIComponentManagerObsolete and is in nsIComponentManager
// is GetClassObjectContractID.
//
// nsIComponentManager function not in nsIComponentManagerObsolete:
NS_IMETHOD GetClassObjectByContractID(const char *aContractID,
const nsIID &aIID,
void **_retval);
NS_DECL_NSICOMPONENTMANAGEROBSOLETE
// Since the nsIComponentManagerObsolete and nsIComponentRegistrar share some of the
// same interface function names, we have to manually define the functions here.
// the only function that is shared is UnregisterFactory
NS_IMETHOD AutoRegister(nsIFile *aSpec);
NS_IMETHOD AutoUnregister(nsIFile *aSpec);
NS_IMETHOD RegisterFactory(const nsCID & aClass, const char *aClassName, const char *aContractID, nsIFactory *aFactory);
// NS_IMETHOD UnregisterFactory(const nsCID & aClass, nsIFactory *aFactory);
NS_IMETHOD RegisterFactoryLocation(const nsCID & aClass, const char *aClassName, const char *aContractID, nsIFile *aFile, const char *loaderStr, const char *aType);
NS_IMETHOD UnregisterFactoryLocation(const nsCID & aClass, nsIFile *aFile);
NS_IMETHOD IsCIDRegistered(const nsCID & aClass, PRBool *_retval);
NS_IMETHOD IsContractIDRegistered(const char *aClass, PRBool *_retval);
NS_IMETHOD EnumerateCIDs(nsISimpleEnumerator **_retval);
NS_IMETHOD EnumerateContractIDs(nsISimpleEnumerator **_retval);
NS_IMETHOD CIDToContractID(const nsCID & aClass, char **_retval);
NS_IMETHOD ContractIDToCID(const char *aContractID, nsCID * *_retval);
nsresult RegistryLocationForFile(nsIFile* aFile,
nsCString& aResult);
nsresult FileForRegistryLocation(const nsCString &aLocation,
nsILocalFile **aSpec);
NS_DECL_NSISERVICEMANAGER
NS_DECL_NSISERVICEMANAGEROBSOLETE
// nsComponentManagerImpl methods:
nsComponentManagerImpl();
static nsComponentManagerImpl* gComponentManager;
nsresult Init(nsStaticModuleInfo const *aStaticModules,
PRUint32 aStaticModuleCount);
// NOTE: XPCOM initialization must call either ReadPersistentRegistry or
// AutoRegister to fully initialize the nsComponentManagerImpl.
nsresult WritePersistentRegistry();
nsresult ReadPersistentRegistry();
nsresult Shutdown(void);
nsresult FreeServices();
nsresult
NS_GetService(const char *aContractID, const nsIID& aIID, PRBool aDontCreate, nsISupports** result);
nsresult RegisterComponentCommon(const nsCID &aClass,
const char *aClassName,
const char *aContractID,
PRUint32 aContractIDLen,
const char *aRegistryName,
PRUint32 aRegistryNameLen,
PRBool aReplace, PRBool aPersist,
const char *aType);
// Convert a loader type string into an index into the loader data
// array. Empty loader types are converted to NATIVE. Returns
// NS_LOADER_TYPE_INVALID if loader type cannot be determined.
LoaderType GetLoaderType(const char *typeStr);
LoaderType AddLoaderType(const char *typeStr);
const char* StringForLoaderType(LoaderType aType) {
return mLoaderData[aType].type.get();
}
nsIModuleLoader* LoaderForType(LoaderType aType);
int GetLoaderCount() { return mLoaderData.Length(); }
void GetAllLoaders();
nsresult FindFactory(const char *contractID, PRUint32 aContractIDLen, nsIFactory **aFactory) ;
nsresult LoadFactory(nsFactoryEntry *aEntry, nsIFactory **aFactory);
nsFactoryEntry *GetFactoryEntry(const char *aContractID,
PRUint32 aContractIDLen);
nsFactoryEntry *GetFactoryEntry(const nsCID &aClass);
nsresult SyncComponentsInDir(PRInt32 when, nsIFile *dirSpec);
nsresult HashContractID(const char *acontractID, PRUint32 aContractIDLen,
nsFactoryEntry *fe_ptr);
void DeleteContractIDEntriesByCID(const nsCID* aClass, nsIFactory* factory);
nsresult AutoRegisterImpl(nsIFile* inDirSpec,
nsCOMArray<nsILocalFile> &aLeftovers,
nsTArray<DeferredModule> &aDeferred);
nsresult AutoRegisterDirectory(nsIFile* aComponentFile,
nsCOMArray<nsILocalFile> &aLeftovers,
nsTArray<DeferredModule> &aDeferred);
nsresult AutoRegisterComponent(nsILocalFile* aComponentFile,
nsTArray<DeferredModule> &aDeferred,
LoaderType minLoader = NS_LOADER_TYPE_NATIVE);
void LoadLeftoverComponents(nsCOMArray<nsILocalFile> &aLeftovers,
nsTArray<DeferredModule> &aDeferred,
LoaderType minLoader);
void LoadDeferredModules(nsTArray<DeferredModule> &aDeferred);
PLDHashTable mFactories;
PLDHashTable mContractIDs;
PRMonitor* mMon;
nsNativeModuleLoader mNativeModuleLoader;
nsStaticModuleLoader mStaticModuleLoader;
nsCOMPtr<nsIFile> mComponentsDir;
PRInt32 mComponentsOffset;
nsCOMPtr<nsIFile> mGREComponentsDir;
PRInt32 mGREComponentsOffset;
nsCOMPtr<nsIFile> mRegistryFile;
// Shutdown
#define NS_SHUTDOWN_NEVERHAPPENED 0
#define NS_SHUTDOWN_INPROGRESS 1
#define NS_SHUTDOWN_COMPLETE 2
PRUint32 mShuttingDown;
nsTArray<nsLoaderdata> mLoaderData;
nsDataHashtable<nsHashableHashKey, PRInt64> mAutoRegEntries;
PRBool mRegistryDirty;
nsCOMPtr<nsCategoryManager> mCategoryManager;
PLArenaPool mArena;
struct PendingServiceInfo {
const nsCID* cid;
PRThread* thread;
};
inline PendingServiceInfo* AddPendingService(const nsCID& aServiceCID,
PRThread* aThread);
inline void RemovePendingService(const nsCID& aServiceCID);
inline PRThread* GetPendingServiceThread(const nsCID& aServiceCID) const;
nsTArray<PendingServiceInfo> mPendingServices;
private:
~nsComponentManagerImpl();
};
#define NS_MAX_FILENAME_LEN 1024
#define NS_ERROR_IS_DIR NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_XPCOM, 24)
////////////////////////////////////////////////////////////////////////////////
/**
* Class: nsFactoryEntry()
*
* There are two types of FactoryEntries.
*
* 1. {CID, dll} mapping.
* Factory is a consequence of the dll. These can be either session
* specific or persistent based on whether we write this
* to the registry or not.
*
* 2. {CID, factory} mapping
* These are strictly session specific and in memory only.
*/
struct nsFactoryEntry {
nsFactoryEntry(const nsCID &aClass,
LoaderType aLoaderType,
const char *aLocationKey,
nsFactoryEntry *aParent = nsnull);
nsFactoryEntry(const nsCID &aClass,
nsIFactory *aFactory,
nsFactoryEntry *aParent = nsnull) :
mCid(aClass),
mLoaderType(NS_LOADER_TYPE_INVALID),
mFactory(aFactory),
mParent(aParent) {
mLocationKey = nsnull;
}
~nsFactoryEntry();
void ReInit(LoaderType aLoaderType,
const char *aLocationKey);
nsresult GetFactory(nsIFactory **aFactory);
nsCID mCid;
LoaderType mLoaderType;
const char *mLocationKey;
nsCOMPtr<nsIFactory> mFactory;
nsCOMPtr<nsISupports> mServiceObject;
nsFactoryEntry *mParent;
};
////////////////////////////////////////////////////////////////////////////////
struct nsFactoryTableEntry : public PLDHashEntryHdr {
nsFactoryEntry *mFactoryEntry;
};
struct nsContractIDTableEntry : public PLDHashEntryHdr {
char *mContractID;
PRUint32 mContractIDLen;
nsFactoryEntry *mFactoryEntry;
};
#endif // nsComponentManager_h__