Concurrency control is a critical technology and one of the problems in CSCW systems. With the development of agent based technology, it has also been applied to research and development of CSCW systems. An Agent ba...Concurrency control is a critical technology and one of the problems in CSCW systems. With the development of agent based technology, it has also been applied to research and development of CSCW systems. An Agent based method for concurrency control in CSCW is explored in this paper. This new way is achieved by making use of the thoughts of AOP (Agent Oriented Programming) to improve traditional locking method, on the basis of researching characteristics and functional requirements of concurrency control in CSCW, and analyzing various usually used concurrency control methods. All amendments to locking method are done on the basis of the analysis of limitations brought by locking. In this paper, a new algorithm supporting queue of locking request for Agent based concurrency control is also presented. All above aspects are discussed in some detail in this paper.展开更多
The concurrent manipulation of an expanded AVL tree (EAVL tree) is considered in this paper. The presented system can support any number of concurrent processes which perform searching, insertion and deletion on the t...The concurrent manipulation of an expanded AVL tree (EAVL tree) is considered in this paper. The presented system can support any number of concurrent processes which perform searching, insertion and deletion on the tree. Simulation results indicate the high performance of the system. Elaborate techniques are used to achieve such a system unawilable based on any known algorithms. Methods developed in this paper may provide new insights into other problems in the area of concurrent search structure manipulation.展开更多
文摘Concurrency control is a critical technology and one of the problems in CSCW systems. With the development of agent based technology, it has also been applied to research and development of CSCW systems. An Agent based method for concurrency control in CSCW is explored in this paper. This new way is achieved by making use of the thoughts of AOP (Agent Oriented Programming) to improve traditional locking method, on the basis of researching characteristics and functional requirements of concurrency control in CSCW, and analyzing various usually used concurrency control methods. All amendments to locking method are done on the basis of the analysis of limitations brought by locking. In this paper, a new algorithm supporting queue of locking request for Agent based concurrency control is also presented. All above aspects are discussed in some detail in this paper.
文摘The concurrent manipulation of an expanded AVL tree (EAVL tree) is considered in this paper. The presented system can support any number of concurrent processes which perform searching, insertion and deletion on the tree. Simulation results indicate the high performance of the system. Elaborate techniques are used to achieve such a system unawilable based on any known algorithms. Methods developed in this paper may provide new insights into other problems in the area of concurrent search structure manipulation.
