| oodOPT:A Semantics-Based Concurrency Control Framework for Fully-Replicated Architecture |
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| 作者姓名： | 杨光信 史美林 |
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| 作者单位： | [1]Bell－LabsResearchChina,LucentTechnologies,Beijing100080,P.R.China [2]DepartmentofComputerScienceandTechnology,TsinghuaUniversity,Beijing100084,P.R.China |
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| 基金项目： | The work was supported by the National Natural Science Foundation of China under grant No.69773029 and theNational '863' High- |
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| 摘 要： | Concurrency control has always been one of the most important issues in the design of synchronous groupware systems with fully-replicated architecture,An ideal strategy should be able to support natural and flexible human-to-computer and human-to-human interactions while maintaining the consistency of the system.This paper summarizes previous researches on this topic and points out the deficiencies of the existing results.A novel semantics-based concurrency control framewokr oodOPT,is proposed.The main idea of the framework is to resulve conflicts by utilizing semantics of the operations and the accessed data frameworks is to resolve conflicts by utilizing semantics of the operations and the accessed data objects.With this approach,complexities in concurrency control are shifted completely from application developers to the framework.Conflicts among operations on objects with different semantics and the strategies resolving these conflicts are analyzed.After describing the algorithm in full detail.the discussion ends up with a comparison with other related work and some considerations for open problems.
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| 关 键 词： | oodOPT 操作系统 语言并行操作控制 |
oodOPT: A semantics-based concurrency control framework for fully-replicated architecture |
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| Guangxin Yang,Meilin Shi.oodOPT:A Semantics-Based Concurrency Control Framework for Fully-Replicated Architecture[J].Journal of Computer Science and Technology,2001,16(6):0-0. |
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| Authors: | Guangxin Yang Meilin Shi |
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| Affiliation: | (1) Lucent Technologies, Bell-Labs Research China, 100080 Beijing, P.R. China;(2) Department of Computer Science and Technology, Tsinghua University, 100084 Beijing, P.R. China |
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| Abstract: | Concurrency control has always been one of the most important issues in the design of synchronous groupware systems with fully-replicated architecture. An ideal strate- gy should be able to support natural and flexible human-to-computer and human-to-human interactions while maintaining the consistency of the system. This paper summarizes previ- ous researches on this topic and points out the deficiencies of the existing results. A novel semantics-based concurrency control framework, oodOPT is proposed. The main idea of the framework is to resolve conflicts by utilizing semantics of the operations and the accessed data objects. With this approach, complexities in concurrency control are shifted completely from application developers to the framework. Conflicts among operations on objects with different semantics and the strategies resolving these conflicts are analyzed. After describing the algo- rithm in full detail, the discussion ends up with a comparison with other related work and some considerations for open problems. |
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| Keywords: | computer supported cooperative work groupware concurrency control ood- OPT COFFEE Cova |
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