IDBTransactionBackend.h [plain text]
#ifndef IDBTransactionBackend_h
#define IDBTransactionBackend_h
#if ENABLE(INDEXED_DATABASE)
#include "IDBDatabaseBackend.h"
#include "IDBDatabaseError.h"
#include "IDBOperation.h"
#include "Timer.h"
#include <wtf/Deque.h>
#include <wtf/HashSet.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class IDBCursorBackend;
class IDBDatabaseCallbacks;
class IDBTransactionBackend : public RefCounted<IDBTransactionBackend> {
public:
static PassRefPtr<IDBTransactionBackend> create(IDBDatabaseBackend*, int64_t transactionId, PassRefPtr<IDBDatabaseCallbacks>, const Vector<int64_t>& objectStoreIds, IndexedDB::TransactionMode);
~IDBTransactionBackend();
void commit();
void abort();
void abort(PassRefPtr<IDBDatabaseError>);
void run();
IndexedDB::TransactionMode mode() const { return m_mode; }
const HashSet<int64_t>& scope() const { return m_objectStoreIds; }
void scheduleTask(PassRefPtr<IDBOperation> task, PassRefPtr<IDBSynchronousOperation> abortTask = nullptr) { scheduleTask(IDBDatabaseBackend::NormalTask, task, abortTask); }
void scheduleTask(IDBDatabaseBackend::TaskType, PassRefPtr<IDBOperation>, PassRefPtr<IDBSynchronousOperation> abortTask = nullptr);
void registerOpenCursor(IDBCursorBackend*);
void unregisterOpenCursor(IDBCursorBackend*);
void addPreemptiveEvent() { m_pendingPreemptiveEvents++; }
void didCompletePreemptiveEvent() { m_pendingPreemptiveEvents--; ASSERT(m_pendingPreemptiveEvents >= 0); }
IDBDatabaseBackend& database() const { return *m_database; }
void scheduleCreateObjectStoreOperation(const IDBObjectStoreMetadata&);
void scheduleDeleteObjectStoreOperation(const IDBObjectStoreMetadata&);
void scheduleVersionChangeOperation(int64_t requestedVersion, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, const IDBDatabaseMetadata&);
void scheduleCreateIndexOperation(int64_t objectStoreId, const IDBIndexMetadata&);
void scheduleDeleteIndexOperation(int64_t objectStoreId, const IDBIndexMetadata&);
void scheduleGetOperation(const IDBDatabaseMetadata&, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, IndexedDB::CursorType, PassRefPtr<IDBCallbacks>);
void schedulePutOperation(const IDBObjectStoreMetadata&, PassRefPtr<SharedBuffer> value, PassRefPtr<IDBKey>, IDBDatabaseBackend::PutMode, PassRefPtr<IDBCallbacks>, const Vector<int64_t>& indexIds, const Vector<IndexKeys>&);
void scheduleSetIndexesReadyOperation(size_t indexCount);
void scheduleOpenCursorOperation(int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, IndexedDB::CursorDirection, IndexedDB::CursorType, IDBDatabaseBackend::TaskType, PassRefPtr<IDBCallbacks>);
void scheduleCountOperation(int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, PassRefPtr<IDBCallbacks>);
void scheduleDeleteRangeOperation(int64_t objectStoreId, PassRefPtr<IDBKeyRange>, PassRefPtr<IDBCallbacks>);
void scheduleClearObjectStoreOperation(int64_t objectStoreId, PassRefPtr<IDBCallbacks>);
int64_t id() const { return m_id; }
private:
IDBTransactionBackend(IDBDatabaseBackend*, int64_t id, PassRefPtr<IDBDatabaseCallbacks>, const HashSet<int64_t>& objectStoreIds, IndexedDB::TransactionMode);
enum State {
Unopened, Unused, StartPending, Running, Finished, };
void start();
bool isTaskQueueEmpty() const;
bool hasPendingTasks() const;
void taskTimerFired(Timer<IDBTransactionBackend>&);
void closeOpenCursors();
const HashSet<int64_t> m_objectStoreIds;
const IndexedDB::TransactionMode m_mode;
State m_state;
bool m_commitPending;
RefPtr<IDBDatabaseCallbacks> m_callbacks;
RefPtr<IDBDatabaseBackend> m_database;
typedef Deque<RefPtr<IDBOperation>> TaskQueue;
TaskQueue m_taskQueue;
TaskQueue m_preemptiveTaskQueue;
Deque<RefPtr<IDBSynchronousOperation>> m_abortTaskQueue;
Timer<IDBTransactionBackend> m_taskTimer;
int m_pendingPreemptiveEvents;
HashSet<IDBCursorBackend*> m_openCursors;
int64_t m_id;
};
}
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBTransactionBackend_h