/* -*- 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 DOM_FS_PARENT_DATAMODEL_FILESYSTEMDATAMANAGER_H_
#define DOM_FS_PARENT_DATAMODEL_FILESYSTEMDATAMANAGER_H_
#include "FileSystemParentTypes.h"
#include "ResultConnection.h"
#include "mozilla/NotNull.h"
#include "mozilla/TaskQueue.h"
#include "mozilla/ThreadBound.h"
#include "mozilla/dom/FileSystemHelpers.h"
#include "mozilla/dom/FileSystemTypes.h"
#include "mozilla/dom/quota/CheckedUnsafePtr.h"
#include "mozilla/dom/quota/CommonMetadata.h"
#include "mozilla/dom/quota/ForwardDecls.h"
#include "nsCOMPtr.h"
#include "nsISupportsUtils.h"
#include "nsString.h"
#include "nsTHashSet.h"
namespace mozilla {
template <
typename V,
typename E>
class Result;
namespace dom {
class FileSystemAccessHandle;
class FileSystemManagerParent;
namespace fs {
struct FileId;
class FileSystemChildMetadata;
}
// namespace fs
namespace quota {
class ClientDirectoryLock;
class QuotaManager;
}
// namespace quota
namespace fs::data {
class FileSystemDatabaseManager;
Result<EntryId, QMResult> GetRootHandle(
const Origin& origin);
Result<EntryId, QMResult> GetEntryHandle(
const FileSystemChildMetadata& aHandle);
Result<ResultConnection, QMResult> GetStorageConnection(
const quota::OriginMetadata& aOriginMetadata,
const int64_t aDirectoryLockId);
// The assertion type must be the same as the assertion type used for defining
// FileSystemDataManagerHashKey in FileSystemDataManager.cpp!
class FileSystemDataManager
:
public SupportsCheckedUnsafePtr<CheckIf<ReleaseAssertEnabled>> {
public:
enum struct State : uint8_t { Initial = 0, Opening, Open, Closing, Closed };
FileSystemDataManager(
const quota::OriginMetadata& aOriginMetadata,
RefPtr<quota::QuotaManager> aQuotaManager,
MovingNotNull<nsCOMPtr<nsIEventTarget>> aIOTarget,
MovingNotNull<RefPtr<TaskQueue>> aIOTaskQueue);
// IsExclusive is true because we want to allow the move operations. There's
// always just one consumer anyway.
using CreatePromise = MozPromise<Registered<FileSystemDataManager>, nsresult,
/* IsExclusive */ true>;
static RefPtr<CreatePromise> GetOrCreateFileSystemDataManager(
const quota::OriginMetadata& aOriginMetadata);
static void AbortOperationsForLocks(
const quota::Client::DirectoryLockIdTable& aDirectoryLockIds);
static void InitiateShutdown();
static bool IsShutdownCompleted();
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FileSystemDataManager)
void AssertIsOnIOTarget()
const;
const quota::OriginMetadata& OriginMetadataRef()
const {
return mOriginMetadata;
}
nsISerialEventTarget* MutableBackgroundTargetPtr()
const {
return mBackgroundTarget.get();
}
nsIEventTarget* MutableIOTargetPtr()
const {
return mIOTarget.get(); }
nsISerialEventTarget* MutableIOTaskQueuePtr()
const {
return mIOTaskQueue.get();
}
Maybe<quota::ClientDirectoryLock&> MaybeDirectoryLockRef()
const {
return ToMaybeRef(mDirectoryLock.get());
}
FileSystemDatabaseManager* MutableDatabaseManagerPtr()
const {
MOZ_ASSERT(mDatabaseManager);
return mDatabaseManager.get();
}
void Register();
void Unregister();
void RegisterActor(NotNull<FileSystemManagerParent*> aActor);
void UnregisterActor(NotNull<FileSystemManagerParent*> aActor);
void RegisterAccessHandle(NotNull<FileSystemAccessHandle*> aAccessHandle);
void UnregisterAccessHandle(NotNull<FileSystemAccessHandle*> aAccessHandle);
bool IsOpen()
const {
return mState == State::Open; }
RefPtr<BoolPromise> OnOpen();
RefPtr<BoolPromise> OnClose();
Result<
bool, QMResult> IsLocked(
const FileId& aFileId)
const;
Result<
bool, QMResult> IsLocked(
const EntryId& aEntryId)
const;
Result<FileId, QMResult> LockExclusive(
const EntryId& aEntryId);
void UnlockExclusive(
const EntryId& aEntryId);
Result<FileId, QMResult> LockShared(
const EntryId& aEntryId);
void UnlockShared(
const EntryId& aEntryId,
const FileId& aFileId,
bool aAbort);
FileMode GetMode(
bool aKeepData)
const;
protected:
virtual ~FileSystemDataManager();
bool IsInactive()
const;
bool IsOpening()
const {
return mState == State::Opening; }
bool IsClosing()
const {
return mState == State::Closing; }
void RequestAllowToClose();
RefPtr<BoolPromise> BeginOpen();
RefPtr<BoolPromise> BeginClose();
// Things touched on background thread only.
struct BackgroundThreadAccessible {
nsTHashSet<FileSystemManagerParent*> mActors;
nsTHashSet<FileSystemAccessHandle*> mAccessHandles;
};
ThreadBound<BackgroundThreadAccessible> mBackgroundThreadAccessible;
const quota::OriginMetadata mOriginMetadata;
nsTHashSet<EntryId> mExclusiveLocks;
nsTHashMap<EntryId, uint32_t> mSharedLocks;
NS_DECL_OWNINGEVENTTARGET
const RefPtr<quota::QuotaManager> mQuotaManager;
const NotNull<nsCOMPtr<nsISerialEventTarget>> mBackgroundTarget;
const NotNull<nsCOMPtr<nsIEventTarget>> mIOTarget;
const NotNull<RefPtr<TaskQueue>> mIOTaskQueue;
RefPtr<quota::ClientDirectoryLock> mDirectoryLock;
UniquePtr<FileSystemDatabaseManager> mDatabaseManager;
MozPromiseHolder<BoolPromise> mOpenPromiseHolder;
MozPromiseHolder<BoolPromise> mClosePromiseHolder;
uint32_t mRegCount;
DatabaseVersion mVersion;
State mState;
};
}
// namespace fs::data
}
// namespace dom
}
// namespace mozilla
#endif // DOM_FS_PARENT_DATAMODEL_FILESYSTEMDATAMANAGER_H_