【摘要】 着重讨论了嵌入式实时数据库系统ARTs-EDB中事务调度实现技术。给出了ARTs-EDB中事务的执行模型、状态及状态变迁;设计了一个考虑事务类型和截止期的多层动态可调整优先级分派方法;给出了一个优先级驱动可抢占的实时事务调度策略,以保证更多事务满足截止期要求。更多还原

【Abstract】 The paper discusses the implementation techniques of transaction scheduling to solve the competitions against CPU in ARTs-EDB.First, an execution model, states and state transformations of transactions in ARTs-EDB are discussed. Then, a multi-level and dynamic adjustablepriority assignment strategy according to transaction types and deadlines is designed. In the end, a priority-driven preemptive scheduling strategy isgiven, which can guarantee more real-time transactions satisfying their timing constraints.更多还原