Systems and methods for sharing resources in a multi-user enviro

Details Systems and methods for sharing resources in a multi-user enviro Systems and methods for sharing resources in a multi-user enviro

1994-12-09

1997-07-01

Oberley, Alvin E.

G06F 900

Patent

active

056447680

ABSTRACT:
Multi-user system includes a server connected to one or more workstations or "clients" through a computer network. System provides concurrent access to shared resources (e.g., common data structures residing on the server), but without the disadvantage attendant with conventional mutual exclusive (mutex) primitives. Specifically, the system provides a "nested mutex" mechanism, so that user program code can acquire and release mutexes without concern for deadlocking and without special processing for testing a particular mutex condition or state. At the same time, the system prevents other threads or processes from accessing the shared resource in a manner which would violate concurrency.

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