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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 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__
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