| /** |
| * Copyright 2016, Quickstep Research Group, Computer Sciences Department, |
| * University of Wisconsin—Madison. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| **/ |
| |
| #ifndef QUICKSTEP_TRANSACTION_TRANSACTION_HPP_ |
| #define QUICKSTEP_TRANSACTION_TRANSACTION_HPP_ |
| |
| #include <cstddef> |
| #include <cstdint> |
| #include <functional> |
| |
| namespace quickstep { |
| namespace transaction { |
| |
| /** \addtogroup Transaction |
| * @{ |
| */ |
| |
| /** |
| * @brief Type that represents id of a transaction. |
| **/ |
| typedef std::uint64_t transaction_id; |
| |
| /** |
| * @brief Enum class for transaction internal status. |
| **/ |
| enum class TransactionStatus { |
| kRunning = 0, |
| kAborted, |
| kCommitted |
| }; |
| |
| /** |
| * @brief Transaction |
| **/ |
| class Transaction { |
| public: |
| /** |
| * @brief Constructor for Transaction. |
| * |
| * @param tid Id of this transaction. |
| **/ |
| explicit Transaction(transaction_id tid) |
| : tid_(tid) { |
| } |
| |
| /** |
| * @brief Getter for transaction id. |
| * |
| * @return Transaction id of this. |
| **/ |
| inline transaction_id getTransactionId() const { |
| return tid_; |
| } |
| |
| /** |
| * @brief Setter for the transaction status. |
| * |
| * @param status New status of the transaction. |
| **/ |
| inline void setStatus(TransactionStatus status) { |
| status_ = status_; |
| } |
| |
| /** |
| * @brief Getter for the transaction status. |
| * |
| * @return Status of the transaction. |
| **/ |
| inline TransactionStatus getStatus() const { |
| return status_; |
| } |
| |
| /** |
| * @brief Equality operator for Transaction class. |
| * |
| * @param other Other transaction to be compared with. |
| * @return True if other tid and this tid are equal, false otherwise. |
| **/ |
| inline bool operator==(const Transaction &other) const { |
| return tid_ == other.tid_; |
| } |
| |
| /** |
| * @brief Helper hasher class for transaction. |
| **/ |
| struct TransactionHasher { |
| std::size_t operator()(const Transaction &transaction) const { |
| return std::hash<transaction_id>()(transaction.tid_); |
| } |
| }; |
| |
| private: |
| // Unique id for the transaction. |
| transaction_id tid_; |
| |
| // Transaction's running status. |
| TransactionStatus status_; |
| }; |
| |
| /** @} */ |
| |
| } // namespace transaction |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_TRANSACTION_TRANSACTION_HPP_ |