Tandem Computers Incorporated

Alan L Rowe

Srinivasa D Murthy

Venkatesh Harinarayan

Ramin Modiri

An apparatus and method, using an inter-processor lock to control access to inter-process relationship data structures in the memory of each processor in a multiprocessor system. The apparatus and method insure that each inter-process relationship is modified in the same sequence on each processor. The apparatus and method also insure that an inter-process relationship is maintained in a consistent state in the face of failure of any of the processors.

Ordered and reliable maintenance of inter-process relationships in a

An apparatus and method, using an inter-processor lock to coordinate signal delivery to a process group whose member processes are distributed across multiple processors. The apparatus and method insure that each process group member process receives the same signals in the same order and that no signal is duplicated. The apparatus and method also insure that a partially completed signal delivery is completed even in the face of failure of the signalling processor.

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San Jose, CA, United States of America

Alan L Rowe