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/* -*- 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 */
#ifndef mozilla_dom_indexeddatabasemanager_h__
#define mozilla_dom_indexeddatabasemanager_h__
#include "js/TypeDecls.h"
#include "mozilla/Atomics.h"
#include "mozilla/dom/quota/PersistenceType.h"
#include "mozilla/Mutex.h"
#include "nsClassHashtable.h"
#include "nsHashKeys.h"
#include "SafeRefPtr.h"
namespace mozilla {
class EventChainPostVisitor;
namespace dom {
class IDBFactory;
namespace indexedDB {
class BackgroundUtilsChild;
class FileManager;
class FileManagerInfo;
} // namespace indexedDB
class IndexedDatabaseManager final {
typedef mozilla::dom::quota::PersistenceType PersistenceType;
typedef mozilla::dom::indexedDB::FileManager FileManager;
typedef mozilla::dom::indexedDB::FileManagerInfo FileManagerInfo;
enum LoggingMode {
Logging_Disabled = 0,
// Returns a non-owning reference.
static IndexedDatabaseManager* GetOrCreate();
// Returns a non-owning reference.
static IndexedDatabaseManager* Get();
static bool IsClosed();
static bool IsMainProcess()
#ifdef DEBUG
return sIsMainProcess;
static bool InTestingMode();
static bool FullSynchronous();
static LoggingMode GetLoggingMode()
#ifdef DEBUG
return sLoggingMode;
static mozilla::LogModule* GetLoggingModule()
#ifdef DEBUG
return sLoggingModule;
static bool ExperimentalFeaturesEnabled();
static bool ExperimentalFeaturesEnabled(JSContext* aCx, JSObject* aGlobal);
static bool IsFileHandleEnabled();
static uint32_t DataThreshold();
static uint32_t MaxSerializedMsgSize();
static bool PreprocessingEnabled();
// The maximum number of extra entries to preload in an Cursor::OpenOp or
// Cursor::ContinueOp.
static int32_t MaxPreloadExtraRecords();
void ClearBackgroundActor();
[[nodiscard]] SafeRefPtr<FileManager> GetFileManager(
PersistenceType aPersistenceType, const nsACString& aOrigin,
const nsAString& aDatabaseName);
void AddFileManager(SafeRefPtr<FileManager> aFileManager);
void InvalidateAllFileManagers();
void InvalidateFileManagers(PersistenceType aPersistenceType,
const nsACString& aOrigin);
void InvalidateFileManager(PersistenceType aPersistenceType,
const nsACString& aOrigin,
const nsAString& aDatabaseName);
// 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, bool* aResult);
nsresult FlushPendingFileDeletions();
static const nsCString& GetLocale();
static nsresult CommonPostHandleEvent(EventChainPostVisitor& aVisitor,
const IDBFactory& aFactory);
static bool ResolveSandboxBinding(JSContext* aCx);
static bool DefineIndexedDB(JSContext* aCx, JS::Handle<JSObject*> aGlobal);
nsresult Init();
void Destroy();
static void LoggingModePrefChangedCallback(const char* aPrefName,
void* aClosure);
// 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>>
nsCString mLocale;
indexedDB::BackgroundUtilsChild* mBackgroundActor;
static bool sIsMainProcess;
static bool sFullSynchronousMode;
static LazyLogModule sLoggingModule;
static Atomic<LoggingMode> sLoggingMode;
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_indexeddatabasemanager_h__