gecko-dev/xpcom/components/nsComponentManager.h

292 строки
8.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsComponentManager_h__
#define nsComponentManager_h__
#include "nsXPCOM.h"
#include "xpcom-private.h"
#include "nsIComponentManager.h"
#include "nsIComponentRegistrar.h"
#include "nsIServiceManager.h"
#include "nsIFile.h"
#include "mozilla/Module.h"
#include "mozilla/ModuleLoader.h"
#include "mozilla/ReentrantMonitor.h"
#include "nsXULAppAPI.h"
#include "nsNativeComponentLoader.h"
#include "nsIFactory.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "pldhash.h"
#include "prtime.h"
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsWeakReference.h"
#include "plarena.h"
#include "nsCOMArray.h"
#include "nsDataHashtable.h"
#include "nsInterfaceHashtable.h"
#include "nsClassHashtable.h"
#include "nsTArray.h"
#include "mozilla/Omnijar.h"
#include "mozilla/Attributes.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[];
#ifdef DEBUG
#define XPCOM_CHECK_PENDING_CIDS
#endif
////////////////////////////////////////////////////////////////////////////////
extern const mozilla::Module kXPCOMModule;
// Array of Loaders and their type strings
struct nsLoaderdata {
nsCOMPtr<mozilla::ModuleLoader> loader;
nsCString type;
};
class nsComponentManagerImpl MOZ_FINAL
: public nsIComponentManager
, public nsIServiceManager
, public nsSupportsWeakReference
, public nsIComponentRegistrar
, public nsIInterfaceRequestor
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSICOMPONENTMANAGER
NS_DECL_NSICOMPONENTREGISTRAR
static nsresult Create(nsISupports* aOuter, REFNSIID aIID, void** aResult);
nsresult RegistryLocationForFile(nsIFile* aFile,
nsCString& aResult);
nsresult FileForRegistryLocation(const nsCString &aLocation,
nsIFile **aSpec);
NS_DECL_NSISERVICEMANAGER
// nsComponentManagerImpl methods:
nsComponentManagerImpl();
static nsComponentManagerImpl* gComponentManager;
nsresult Init();
nsresult Shutdown(void);
nsresult FreeServices();
already_AddRefed<mozilla::ModuleLoader> LoaderForExtension(const nsACString& aExt);
nsInterfaceHashtable<nsCStringHashKey, mozilla::ModuleLoader> mLoaderMap;
already_AddRefed<nsIFactory> FindFactory(const nsCID& aClass);
already_AddRefed<nsIFactory> FindFactory(const char *contractID,
uint32_t aContractIDLen);
already_AddRefed<nsIFactory> LoadFactory(nsFactoryEntry *aEntry);
nsFactoryEntry *GetFactoryEntry(const char *aContractID,
uint32_t aContractIDLen);
nsFactoryEntry *GetFactoryEntry(const nsCID &aClass);
nsDataHashtable<nsIDHashKey, nsFactoryEntry*> mFactories;
nsDataHashtable<nsCStringHashKey, nsFactoryEntry*> mContractIDs;
mozilla::ReentrantMonitor mMon;
static void InitializeStaticModules();
static void InitializeModuleLocations();
struct ComponentLocation
{
NSLocationType type;
mozilla::FileLocation location;
};
class ComponentLocationComparator
{
public:
bool Equals(const ComponentLocation& a, const ComponentLocation& b) const
{
return (a.type == b.type && a.location.Equals(b.location));
}
};
static nsTArray<const mozilla::Module*>* sStaticModules;
static nsTArray<ComponentLocation>* sModuleLocations;
nsNativeModuleLoader mNativeModuleLoader;
class KnownModule
{
public:
/**
* Static or binary module.
*/
KnownModule(const mozilla::Module* aModule, mozilla::FileLocation &aFile)
: mModule(aModule)
, mFile(aFile)
, mLoaded(false)
, mFailed(false)
{ }
KnownModule(const mozilla::Module* aModule)
: mModule(aModule)
, mLoaded(false)
, mFailed(false)
{ }
KnownModule(mozilla::FileLocation &aFile)
: mModule(NULL)
, mFile(aFile)
, mLoader(NULL)
, mLoaded(false)
, mFailed(false)
{ }
~KnownModule()
{
if (mLoaded && mModule->unloadProc)
mModule->unloadProc();
}
bool EnsureLoader();
bool Load();
const mozilla::Module* Module() const
{
return mModule;
}
/**
* For error logging, get a description of this module, either the
* file path, or <static module>.
*/
nsCString Description() const;
private:
const mozilla::Module* mModule;
mozilla::FileLocation mFile;
nsCOMPtr<mozilla::ModuleLoader> mLoader;
bool mLoaded;
bool mFailed;
};
// The KnownModule is kept alive by these members, it is
// referenced by pointer from the factory entries.
nsTArray< nsAutoPtr<KnownModule> > mKnownStaticModules;
// The key is the URI string of the module
nsClassHashtable<nsCStringHashKey, KnownModule> mKnownModules;
void RegisterModule(const mozilla::Module* aModule,
mozilla::FileLocation* aFile);
void RegisterCIDEntry(const mozilla::Module::CIDEntry* aEntry,
KnownModule* aModule);
void RegisterContractID(const mozilla::Module::ContractIDEntry* aEntry);
void RegisterManifest(NSLocationType aType, mozilla::FileLocation &aFile,
bool aChromeOnly);
struct ManifestProcessingContext
{
ManifestProcessingContext(NSLocationType aType, mozilla::FileLocation &aFile, bool aChromeOnly)
: mType(aType)
, mFile(aFile)
, mChromeOnly(aChromeOnly)
{ }
~ManifestProcessingContext() { }
NSLocationType mType;
mozilla::FileLocation mFile;
bool mChromeOnly;
};
void ManifestManifest(ManifestProcessingContext& cx, int lineno, char *const * argv);
void ManifestBinaryComponent(ManifestProcessingContext& cx, int lineno, char *const * argv);
void ManifestXPT(ManifestProcessingContext& cx, int lineno, char *const * argv);
void ManifestComponent(ManifestProcessingContext& cx, int lineno, char *const * argv);
void ManifestContract(ManifestProcessingContext& cx, int lineno, char* const * argv);
void ManifestCategory(ManifestProcessingContext& cx, int lineno, char* const * argv);
void RereadChromeManifests(bool aChromeOnly = true);
// Shutdown
enum {
NOT_INITIALIZED,
NORMAL,
SHUTDOWN_IN_PROGRESS,
SHUTDOWN_COMPLETE
} mStatus;
nsTArray<nsLoaderdata> mLoaderData;
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)
struct nsFactoryEntry
{
nsFactoryEntry(const mozilla::Module::CIDEntry* entry,
nsComponentManagerImpl::KnownModule* module);
// nsIComponentRegistrar.registerFactory support
nsFactoryEntry(const nsCID& aClass, nsIFactory* factory);
~nsFactoryEntry();
already_AddRefed<nsIFactory> GetFactory();
const mozilla::Module::CIDEntry* mCIDEntry;
nsComponentManagerImpl::KnownModule* mModule;
nsCOMPtr<nsIFactory> mFactory;
nsCOMPtr<nsISupports> mServiceObject;
};
#endif // nsComponentManager_h__