SHARED POOL RESOURCE CONTROL SYSTEM

PROBLEM TO BE SOLVED: To improve the processing performance by decreasing the frequency of exclusive control when a shared pool resource is acquired and returned. SOLUTION: When pooled shared resources are used, process local pool resources 2-1 to 2-n which need not be controlled exclusively are assigned for each process 3-1 to 3-n in addition to a global pool resource 2-0 as a global shared resource which is acquired and returned by access from all the processes. When the shared resource is acquired and returned, the process local pool resources 2-1 to 2-n which need not be controlled exclusively and assigned to each process are accessed as much as possible.