Lock control method for resource

Details Lock control method for resource Lock control method for resource

1996-03-19

1997-03-25

Sheikh, Ayaz R.

G06F 1300

Patent

active

056153740

ABSTRACT:
In a lock control method for a system having a plurality of CPUs and a resource, identification information concerning one of CPUs is written into a non-class lock area of a first lock control information when there is no identification information in the first lock control information, so that the above CPU can acquire the right to exclusively use the whole resource. The identification information concerning one of the CPUs is written into the class lock area of the first lock control information, and thereafter the identification information concerning the CPU is written into a second lock control information when there is no identification information in a non-class lock area of the first lock control information, so that the CPU can acquire the right to exclusively use the resource for each of the classes thereof.

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