archive_transaction.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FLUTTER_IMPELLER_ARCHIVIST_ARCHIVE_TRANSACTION_H_
#define FLUTTER_IMPELLER_ARCHIVIST_ARCHIVE_TRANSACTION_H_
 
#include <cstdint>
 
namespace impeller {
 
class ArchiveStatement;
 
//------------------------------------------------------------------------------
/// @brief      All writes made to the archive within a transaction that is not
///             marked as ready for commit will be rolled back with the
///             transaction ends.
///
///             All transactions are obtained from the `ArchiveDatabase`.
///
/// @see        `ArchiveDatabase`
///
class ArchiveTransaction {
 public:
  ArchiveTransaction(ArchiveTransaction&& transaction);
 
  ~ArchiveTransaction();
 
  void MarkWritesAsReadyForCommit();
 
 private:
  ArchiveStatement& end_stmt_;
  ArchiveStatement& rollback_stmt_;
  int64_t& transaction_count_;
  bool cleanup_ = false;
  bool successful_ = false;
  bool abandoned_ = false;
 
  friend class ArchiveDatabase;
 
  ArchiveTransaction(int64_t& transactionCount,
                     ArchiveStatement& beginStatement,
                     ArchiveStatement& endStatement,
                     ArchiveStatement& rollbackStatement);
 
  ArchiveTransaction(const ArchiveTransaction&) = delete;
 
  ArchiveTransaction& operator=(const ArchiveTransaction&) = delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_ARCHIVIST_ARCHIVE_TRANSACTION_H_