System for asynchronously delivering enqueue and dequeue informa

Details System for asynchronously delivering enqueue and dequeue informa System for asynchronously delivering enqueue and dequeue informa

1992-10-30

1995-09-05

Harvey, Jack B.

395310, 395474, G06F 1338

Patent

active

054487080

ABSTRACT:
In computing system where two entities of the system are transferring data, each entity enqueues and dequeues control elements for the data transfer on an outbound pipe and an inbound pipe, respectively. The enqueue and dequeue operations are based on local control information at the entity. This local control information is in part control information generated at the entity and in part surrogate control information generated at the other entity participating in the data transfer. This surrogate control information is stored at the other entity as well as a surrogate copy being stored in memory shared by both entities. Before an entity begins an enqueue or dequeue operation, it pulls the other entity's surrogate information as a single addressable block from shared memory and distributes it to its own local storage. This local storage is divided into outbound pipe control information and inbound pipe control information. Likewise, after an enqueue or dequeue operation, the entity assembles all of its locally generated control information and pushes it as a single addressable block to shared memory.

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