虚拟样机协同设计并发控制策略研究

针对虚拟样机协同设计中数据量大、事务长、多层嵌套的问题 ,提出了一种基于事务语义的并发控制策略,阐述了并发控制机制中事务结构、事务提交、锁机制和冲突协调等关键性问题。根据数据要求生成复制事务,事务发生改变后 ,其他站点能够实时显示图形、实时读取数据。实例证明 ,基于事务语义的并发控制策略保证协同用户自由地操作共享资源 ,提高了并发控制的可靠性和数据的一致性。

Research on concurrency control mechanism for collaborative of virtual prototype

To contrapose such problems as large volume of data, long-term transaction process and nested layer in collabora-tive of virtual prototype, this paper established a new strategy of collaborative design. Then discussed the relationships among structure, transaction submission, the inter-lock mechanism and conflict harmonization. According data requirements to repli-cate contents, other stations can read data and show the graph when data are changed. It is verified that the concurrency con-trol strategy not only enabled the collaborative users handle shared resources freely, but also ensured the agility concurrency control and the consistency of real-time data by an application example.