Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#ifndef mozilla_dom_idbrequest_h__
#define mozilla_dom_idbrequest_h__
#include "js/RootingAPI.h"
#include "mozilla/Attributes.h"
#include "mozilla/EventForwards.h"
#include "mozilla/dom/DOMException.h"
#include "mozilla/dom/IDBRequestBinding.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/HoldDropJSObjects.h"
#include "nsCycleCollectionParticipant.h"
#include "ReportInternalError.h"
#include "SafeRefPtr.h"
#define PRIVATE_IDBREQUEST_IID \
{ \
0xe68901e5, 0x1d50, 0x4ee9, { \
0xaf, 0x49, 0x90, 0x99, 0x4a, 0xff, 0xc8, 0x39 \
} \
}
class nsIGlobalObject;
namespace mozilla {
class ErrorResult;
namespace dom {
class IDBCursor;
class IDBDatabase;
class IDBFactory;
class IDBIndex;
class IDBObjectStore;
class IDBTransaction;
template <typename>
struct Nullable;
class OwningIDBObjectStoreOrIDBIndexOrIDBCursor;
class StrongWorkerRef;
namespace detail {
// This class holds the IID for use with NS_GET_IID.
class PrivateIDBRequest {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(PRIVATE_IDBREQUEST_IID)
};
NS_DEFINE_STATIC_IID_ACCESSOR(PrivateIDBRequest, PRIVATE_IDBREQUEST_IID)
} // namespace detail
class IDBRequest : public DOMEventTargetHelper {
protected:
// mSourceAsObjectStore and mSourceAsIndex are exclusive and one must always
// be set. mSourceAsCursor is sometimes set also.
RefPtr<IDBObjectStore> mSourceAsObjectStore;
RefPtr<IDBIndex> mSourceAsIndex;
RefPtr<IDBCursor> mSourceAsCursor;
SafeRefPtr<IDBTransaction> mTransaction;
JS::Heap<JS::Value> mResultVal;
RefPtr<DOMException> mError;
nsString mFilename;
uint64_t mLoggingSerialNumber;
nsresult mErrorCode;
uint32_t mLineNo;
uint32_t mColumn;
bool mHaveResultOrErrorCode;
public:
[[nodiscard]] static MovingNotNull<RefPtr<IDBRequest>> Create(
JSContext* aCx, IDBDatabase* aDatabase,
SafeRefPtr<IDBTransaction> aTransaction);
[[nodiscard]] static MovingNotNull<RefPtr<IDBRequest>> Create(
JSContext* aCx, IDBObjectStore* aSource, IDBDatabase* aDatabase,
SafeRefPtr<IDBTransaction> aTransaction);
[[nodiscard]] static MovingNotNull<RefPtr<IDBRequest>> Create(
JSContext* aCx, IDBIndex* aSource, IDBDatabase* aDatabase,
SafeRefPtr<IDBTransaction> aTransaction);
static void CaptureCaller(JSContext* aCx, nsAString& aFilename,
uint32_t* aLineNo, uint32_t* aColumn);
static uint64_t NextSerialNumber();
// EventTarget
void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
void GetSource(
Nullable<OwningIDBObjectStoreOrIDBIndexOrIDBCursor>& aSource) const;
void Reset();
template <typename ResultCallback>
void SetResult(const ResultCallback& aCallback) {
AssertIsOnOwningThread();
MOZ_ASSERT(!mHaveResultOrErrorCode);
MOZ_ASSERT(mResultVal.isUndefined());
MOZ_ASSERT(!mError);
// Already disconnected from the owner.
if (!GetOwnerGlobal()) {
SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return;
}
// See this global is still valid.
if (NS_WARN_IF(NS_FAILED(CheckCurrentGlobalCorrectness()))) {
SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return;
}
AutoJSAPI autoJS;
if (!autoJS.Init(GetOwnerGlobal())) {
IDB_WARNING("Failed to initialize AutoJSAPI!");
SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return;
}
JSContext* cx = autoJS.cx();
JS::Rooted<JS::Value> result(cx);
nsresult rv = aCallback(cx, &result);
if (NS_WARN_IF(NS_FAILED(rv))) {
// This can only fail if the structured clone contains a mutable file
// and the child is not in the main thread and main process.
// In that case CreateAndWrapMutableFile() returns false which shows up
// as NS_ERROR_DOM_DATA_CLONE_ERR here.
MOZ_ASSERT(rv == NS_ERROR_DOM_DATA_CLONE_ERR);
// We are not setting a result or an error object here since we want to
// throw an exception when the 'result' property is being touched.
return;
}
mError = nullptr;
mResultVal = result;
mozilla::HoldJSObjects(this);
mHaveResultOrErrorCode = true;
}
void SetError(nsresult aRv);
nsresult GetErrorCode() const
#ifdef DEBUG
;
#else
{
return mErrorCode;
}
#endif
DOMException* GetErrorAfterResult() const
#ifdef DEBUG
;
#else
{
return mError;
}
#endif
DOMException* GetError(ErrorResult& aRv);
void GetCallerLocation(nsAString& aFilename, uint32_t* aLineNo,
uint32_t* aColumn) const;
bool IsPending() const { return !mHaveResultOrErrorCode; }
uint64_t LoggingSerialNumber() const {
AssertIsOnOwningThread();
return mLoggingSerialNumber;
}
void SetLoggingSerialNumber(uint64_t aLoggingSerialNumber);
nsIGlobalObject* GetParentObject() const { return GetOwnerGlobal(); }
void GetResult(JS::MutableHandle<JS::Value> aResult, ErrorResult& aRv) const;
void GetResult(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv) const {
GetResult(aResult, aRv);
}
Maybe<IDBTransaction&> MaybeTransactionRef() const {
AssertIsOnOwningThread();
return mTransaction.maybeDeref();
}
IDBTransaction& MutableTransactionRef() const {
AssertIsOnOwningThread();
return *mTransaction;
}
SafeRefPtr<IDBTransaction> AcquireTransaction() const {
AssertIsOnOwningThread();
return mTransaction.clonePtr();
}
// For WebIDL binding.
RefPtr<IDBTransaction> GetTransaction() const {
AssertIsOnOwningThread();
return AsRefPtr(mTransaction.clonePtr());
}
IDBRequestReadyState ReadyState() const;
void SetSource(IDBCursor* aSource);
IMPL_EVENT_HANDLER(success);
IMPL_EVENT_HANDLER(error);
void AssertIsOnOwningThread() const { NS_ASSERT_OWNINGTHREAD(IDBRequest); }
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(IDBRequest,
DOMEventTargetHelper)
// nsWrapperCache
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
protected:
explicit IDBRequest(IDBDatabase* aDatabase);
explicit IDBRequest(nsIGlobalObject* aGlobal);
~IDBRequest();
void InitMembers();
void ConstructResult();
};
class IDBOpenDBRequest final : public IDBRequest {
// Only touched on the owning thread.
SafeRefPtr<IDBFactory> mFactory;
RefPtr<StrongWorkerRef> mWorkerRef;
bool mIncreasedActiveDatabaseCount;
public:
[[nodiscard]] static RefPtr<IDBOpenDBRequest> Create(
JSContext* aCx, SafeRefPtr<IDBFactory> aFactory,
nsIGlobalObject* aGlobal);
void SetTransaction(SafeRefPtr<IDBTransaction> aTransaction);
void DispatchNonTransactionError(nsresult aErrorCode);
void NoteComplete();
// EventTarget
IMPL_EVENT_HANDLER(blocked);
IMPL_EVENT_HANDLER(upgradeneeded);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IDBOpenDBRequest, IDBRequest)
// nsWrapperCache
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
private:
IDBOpenDBRequest(SafeRefPtr<IDBFactory> aFactory, nsIGlobalObject* aGlobal);
~IDBOpenDBRequest();
void IncreaseActiveDatabaseCount();
void MaybeDecreaseActiveDatabaseCount();
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_idbrequest_h__