/* -*- 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 mozilla_dom_indexeddatabasemanager_h__ #define mozilla_dom_indexeddatabasemanager_h__ #include "nsIObserver.h" #include "js/TypeDecls.h" #include "mozilla/Atomics.h" #include "mozilla/dom/quota/PersistenceType.h" #include "mozilla/Mutex.h" #include "nsClassHashtable.h" #include "nsCOMPtr.h" #include "nsHashKeys.h" #include "nsITimer.h" class nsIEventTarget; namespace mozilla { class EventChainPostVisitor; namespace dom { class IDBFactory; namespace quota { class QuotaManager; } // namespace quota namespace indexedDB { class BackgroundUtilsChild; class FileManager; class FileManagerInfo; } // namespace indexedDB class IndexedDatabaseManager final : public nsIObserver , public nsITimerCallback { typedef mozilla::dom::quota::PersistenceType PersistenceType; typedef mozilla::dom::quota::QuotaManager QuotaManager; typedef mozilla::dom::indexedDB::FileManager FileManager; typedef mozilla::dom::indexedDB::FileManagerInfo FileManagerInfo; public: enum LoggingMode { Logging_Disabled = 0, Logging_Concise, Logging_Detailed, Logging_ConciseProfilerMarks, Logging_DetailedProfilerMarks }; NS_DECL_ISUPPORTS NS_DECL_NSIOBSERVER NS_DECL_NSITIMERCALLBACK // Returns a non-owning reference. static IndexedDatabaseManager* GetOrCreate(); // Returns a non-owning reference. static IndexedDatabaseManager* Get(); static bool IsClosed(); static bool IsMainProcess() #ifdef DEBUG ; #else { return sIsMainProcess; } #endif static bool InLowDiskSpaceMode() #ifdef DEBUG ; #else { return !!sLowDiskSpaceMode; } #endif static bool InTestingMode(); static bool FullSynchronous(); static LoggingMode GetLoggingMode() #ifdef DEBUG ; #else { return sLoggingMode; } #endif static mozilla::LogModule* GetLoggingModule() #ifdef DEBUG ; #else { return sLoggingModule; } #endif static bool ExperimentalFeaturesEnabled(); static bool ExperimentalFeaturesEnabled(JSContext* aCx, JSObject* aGlobal); static bool IsFileHandleEnabled(); static uint32_t DataThreshold(); static uint32_t MaxSerializedMsgSize(); void ClearBackgroundActor(); void NoteLiveQuotaManager(QuotaManager* aQuotaManager); void NoteShuttingDownQuotaManager(); already_AddRefed<FileManager> GetFileManager(PersistenceType aPersistenceType, const nsACString& aOrigin, const nsAString& aDatabaseName); void AddFileManager(FileManager* aFileManager); void InvalidateAllFileManagers(); void InvalidateFileManagers(PersistenceType aPersistenceType, const nsACString& aOrigin); void InvalidateFileManager(PersistenceType aPersistenceType, const nsACString& aOrigin, const nsAString& aDatabaseName); nsresult AsyncDeleteFile(FileManager* aFileManager, int64_t aFileId); // Don't call this method in real code, it blocks the main thread! // It is intended to be used by mochitests to test correctness of the special // reference counting of stored blobs/files. nsresult BlockAndGetFileReferences(PersistenceType aPersistenceType, const nsACString& aOrigin, const nsAString& aDatabaseName, int64_t aFileId, int32_t* aRefCnt, int32_t* aDBRefCnt, int32_t* aSliceRefCnt, bool* aResult); nsresult FlushPendingFileDeletions(); static const nsCString& GetLocale(); static mozilla::Mutex& FileMutex() { IndexedDatabaseManager* mgr = Get(); NS_ASSERTION(mgr, "Must have a manager here!"); return mgr->mFileMutex; } static nsresult CommonPostHandleEvent(EventChainPostVisitor& aVisitor, IDBFactory* aFactory); static bool ResolveSandboxBinding(JSContext* aCx); static bool DefineIndexedDB(JSContext* aCx, JS::Handle<JSObject*> aGlobal); private: IndexedDatabaseManager(); ~IndexedDatabaseManager(); nsresult Init(); void Destroy(); static void LoggingModePrefChangedCallback(const char* aPrefName, void* aClosure); nsCOMPtr<nsIEventTarget> mBackgroundThread; nsCOMPtr<nsITimer> mDeleteTimer; // Maintains a list of all file managers per origin. This list isn't // protected by any mutex but it is only ever touched on the IO thread. nsClassHashtable<nsCStringHashKey, FileManagerInfo> mFileManagerInfos; nsClassHashtable<nsRefPtrHashKey<FileManager>, nsTArray<int64_t>> mPendingDeleteInfos; // Lock protecting FileManager.mFileInfos. // It's s also used to atomically update FileInfo.mRefCnt, FileInfo.mDBRefCnt // and FileInfo.mSliceRefCnt mozilla::Mutex mFileMutex; nsCString mLocale; indexedDB::BackgroundUtilsChild* mBackgroundActor; static bool sIsMainProcess; static bool sFullSynchronousMode; static LazyLogModule sLoggingModule; static Atomic<LoggingMode> sLoggingMode; static mozilla::Atomic<bool> sLowDiskSpaceMode; }; } // namespace dom } // namespace mozilla #endif // mozilla_dom_indexeddatabasemanager_h__