Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 279 insertions, 0 deletions

diff --git a/xpcom/components/nsComponentManager.h b/xpcom/components/nsComponentManager.h
new file mode 100644
index 0000000000..77e21d8f0c
--- /dev/null
+++ b/xpcom/components/nsComponentManager.h
@@ -0,0 +1,279 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsIComponentManager.h"
+#include "nsIComponentRegistrar.h"
+#include "nsIMemoryReporter.h"
+#include "nsIServiceManager.h"
+#include "nsIFile.h"
+#include "mozilla/ArenaAllocator.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/Module.h"
+#include "mozilla/Monitor.h"
+#include "mozilla/UniquePtr.h"
+#include "nsXULAppAPI.h"
+#include "nsIFactory.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "PLDHashTable.h"
+#include "prtime.h"
+#include "nsCOMPtr.h"
+#include "nsWeakReference.h"
+#include "nsCOMArray.h"
+#include "nsDataHashtable.h"
+#include "nsInterfaceHashtable.h"
+#include "nsClassHashtable.h"
+#include "nsTArray.h"
+
+#include "mozilla/Components.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/Omnijar.h"
+#include "mozilla/Attributes.h"
+
+struct nsFactoryEntry;
+struct PRThread;
+
+#define NS_COMPONENTMANAGER_CID                      \
+  { /* 91775d60-d5dc-11d2-92fb-00e09805570f */       \
+    0x91775d60, 0xd5dc, 0x11d2, {                    \
+      0x92, 0xfb, 0x00, 0xe0, 0x98, 0x05, 0x57, 0x0f \
+    }                                                \
+  }
+
+////////////////////////////////////////////////////////////////////////////////
+
+extern const mozilla::Module kXPCOMModule;
+
+namespace {
+class EntryWrapper;
+}  // namespace
+
+namespace mozilla {
+namespace xpcom {
+
+bool ProcessSelectorMatches(Module::ProcessSelector aSelector);
+bool FastProcessSelectorMatches(Module::ProcessSelector aSelector);
+
+}  // namespace xpcom
+}  // namespace mozilla
+
+class nsComponentManagerImpl final : public nsIComponentManager,
+                                     public nsIServiceManager,
+                                     public nsSupportsWeakReference,
+                                     public nsIComponentRegistrar,
+                                     public nsIInterfaceRequestor,
+                                     public nsIMemoryReporter {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIINTERFACEREQUESTOR
+  NS_DECL_NSICOMPONENTMANAGER
+  NS_DECL_NSICOMPONENTREGISTRAR
+  NS_DECL_NSIMEMORYREPORTER
+
+  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<nsIFactory> FindFactory(const nsCID& aClass);
+  already_AddRefed<nsIFactory> FindFactory(const char* aContractID,
+                                           uint32_t aContractIDLen);
+
+  already_AddRefed<nsIFactory> LoadFactory(nsFactoryEntry* aEntry);
+
+  nsDataHashtable<nsIDPointerHashKey, nsFactoryEntry*> mFactories;
+  nsDataHashtable<nsCStringHashKey, nsFactoryEntry*> mContractIDs;
+
+  mozilla::Monitor mLock;
+
+  mozilla::Maybe<EntryWrapper> LookupByCID(const nsID& aCID);
+  mozilla::Maybe<EntryWrapper> LookupByCID(const mozilla::MonitorAutoLock&,
+                                           const nsID& aCID);
+
+  mozilla::Maybe<EntryWrapper> LookupByContractID(
+      const nsACString& aContractID);
+  mozilla::Maybe<EntryWrapper> LookupByContractID(
+      const mozilla::MonitorAutoLock&, const nsACString& aContractID);
+
+  nsresult GetService(mozilla::xpcom::ModuleID, const nsIID& aIID,
+                      void** aResult);
+
+  static bool JSLoaderReady() { return gComponentManager->mJSLoaderReady; }
+
+  static void InitializeStaticModules();
+  static void InitializeModuleLocations();
+
+  struct ComponentLocation {
+    NSLocationType type;
+    mozilla::FileLocation location;
+  };
+
+  class ComponentLocationComparator {
+   public:
+    bool Equals(const ComponentLocation& aA,
+                const ComponentLocation& aB) const {
+      return (aA.type == aB.type && aA.location.Equals(aB.location));
+    }
+  };
+
+  static nsTArray<ComponentLocation>* sModuleLocations;
+
+  class KnownModule {
+   public:
+    /**
+     * Static or binary module.
+     */
+    explicit KnownModule(const mozilla::Module* aModule)
+        : mModule(aModule), mLoaded(false), mFailed(false) {}
+
+    explicit KnownModule(mozilla::FileLocation& aFile)
+        : mModule(nullptr), mFile(aFile), mLoaded(false), mFailed(false) {}
+
+    ~KnownModule() {
+      if (mLoaded && mModule->unloadProc) {
+        mModule->unloadProc();
+      }
+    }
+
+    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;
+    bool mLoaded;
+    bool mFailed;
+  };
+
+  // The KnownModule is kept alive by these members, it is
+  // referenced by pointer from the factory entries.
+  nsTArray<mozilla::UniquePtr<KnownModule>> mKnownStaticModules;
+  // The key is the URI string of the module
+  nsClassHashtable<nsCStringHashKey, KnownModule> mKnownModules;
+
+  // Mutex not held
+  void RegisterModule(const mozilla::Module* aModule);
+
+  // Mutex held
+  void RegisterCIDEntryLocked(const mozilla::Module::CIDEntry* aEntry,
+                              KnownModule* aModule);
+  void RegisterContractIDLocked(const mozilla::Module::ContractIDEntry* aEntry);
+
+  // Mutex not held
+  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() = default;
+
+    NSLocationType mType;
+    mozilla::FileLocation mFile;
+    bool mChromeOnly;
+  };
+
+  void ManifestManifest(ManifestProcessingContext& aCx, int aLineNo,
+                        char* const* aArgv);
+  void ManifestComponent(ManifestProcessingContext& aCx, int aLineNo,
+                         char* const* aArgv);
+  void ManifestContract(ManifestProcessingContext& aCx, int aLineNo,
+                        char* const* aArgv);
+  void ManifestCategory(ManifestProcessingContext& aCx, int aLineNo,
+                        char* const* aArgv);
+
+  void RereadChromeManifests(bool aChromeOnly = true);
+
+  // Shutdown
+  enum {
+    NOT_INITIALIZED,
+    NORMAL,
+    SHUTDOWN_IN_PROGRESS,
+    SHUTDOWN_COMPLETE
+  } mStatus;
+
+  mozilla::ArenaAllocator<1024 * 1, 8> mArena;
+
+  struct PendingServiceInfo {
+    const nsCID* cid;
+    PRThread* thread;
+  };
+
+  inline PendingServiceInfo* AddPendingService(const nsCID& aServiceCID,
+                                               PRThread* aThread);
+  inline void RemovePendingService(mozilla::MonitorAutoLock& aLock,
+                                   const nsCID& aServiceCID);
+  inline PRThread* GetPendingServiceThread(const nsCID& aServiceCID) const;
+
+  nsTArray<PendingServiceInfo> mPendingServices;
+
+  bool mJSLoaderReady = false;
+
+  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+ private:
+  ~nsComponentManagerImpl();
+
+  nsresult GetServiceLocked(mozilla::Maybe<mozilla::MonitorAutoLock>& aLock,
+                            EntryWrapper& aEntry, const nsIID& aIID,
+                            void** aResult);
+};
+
+#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* aEntry,
+                 nsComponentManagerImpl::KnownModule* aModule);
+
+  // nsIComponentRegistrar.registerFactory support
+  nsFactoryEntry(const nsCID& aClass, nsIFactory* aFactory);
+
+  ~nsFactoryEntry();
+
+  already_AddRefed<nsIFactory> GetFactory();
+
+  nsresult CreateInstance(nsISupports* aOuter, const nsIID& aIID,
+                          void** aResult);
+
+  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf);
+
+  const mozilla::Module::CIDEntry* mCIDEntry;
+  nsComponentManagerImpl::KnownModule* mModule;
+
+  nsCOMPtr<nsIFactory> mFactory;
+  nsCOMPtr<nsISupports> mServiceObject;
+};
+
+#endif  // nsComponentManager_h__