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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 DOM_QUOTA_DIRECTORYLOCK_H_
#define DOM_QUOTA_DIRECTORYLOCK_H_
#include "nsTArrayForwardDeclare.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/quota/Client.h"
#include "mozilla/dom/quota/PersistenceType.h"
template <class T>
class RefPtr;
namespace mozilla::dom::quota {
class ClientDirectoryLock;
enum class DirectoryLockCategory : uint8_t;
struct OriginMetadata;
// Basic directory lock interface shared by all other directory lock classes.
// The class must contain pure virtual functions only to avoid problems with
// multiple inheritance.
class NS_NO_VTABLE DirectoryLock {
public:
NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
virtual int64_t Id() const = 0;
virtual DirectoryLockCategory Category() const = 0;
virtual bool Acquired() const = 0;
virtual bool MustWait() const = 0;
virtual nsTArray<RefPtr<DirectoryLock>> LocksMustWaitFor() const = 0;
virtual bool Dropped() const = 0;
virtual RefPtr<BoolPromise> Acquire() = 0;
virtual void AcquireImmediately() = 0;
virtual void AssertIsAcquiredExclusively() = 0;
virtual void Drop() = 0;
virtual void OnInvalidate(std::function<void()>&& aCallback) = 0;
virtual void Log() const = 0;
};
// A directory lock specialized for a given origin directory.
class NS_NO_VTABLE OriginDirectoryLock : public DirectoryLock {
public:
// 'Get' prefix is to avoid name collisions with the enum
virtual PersistenceType GetPersistenceType() const = 0;
virtual quota::OriginMetadata OriginMetadata() const = 0;
virtual const nsACString& Origin() const = 0;
};
// A directory lock specialized for a given client directory (inside an origin
// directory).
class NS_NO_VTABLE ClientDirectoryLock : public OriginDirectoryLock {
public:
virtual Client::Type ClientType() const = 0;
};
// A directory lock for universal use. A universal lock can handle any possible
// combination of nullable persistence type, origin scope and nullable client
// type.
//
// For example, if the persistence type is set to null, origin scope is null
// and the client type is set to Client::IDB, then the lock will cover
// <profile>/storage/*/*/idb
//
// If no property is set, then the lock will cover the entire storage directory
// and its subdirectories.
class UniversalDirectoryLock : public DirectoryLock {
public:
// XXX Rename to NullablePersistenceTypeRef.
virtual const Nullable<PersistenceType>& NullablePersistenceType() const = 0;
// XXX Rename to OriginScopeRef.
virtual const OriginScope& GetOriginScope() const = 0;
// XXX Rename to NullableClientTypeRef.
virtual const Nullable<Client::Type>& NullableClientType() const = 0;
virtual RefPtr<ClientDirectoryLock> SpecializeForClient(
PersistenceType aPersistenceType, const OriginMetadata& aOriginMetadata,
Client::Type aClientType) const = 0;
};
} // namespace mozilla::dom::quota
#endif // DOM_QUOTA_DIRECTORYLOCK_H_
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