System and method for granting or preventing atomic or nonatomic

Details System and method for granting or preventing atomic or nonatomic System and method for granting or preventing atomic or nonatomic

1993-11-29

1995-08-29

Gossage, Glenn

Boots, shoes, and leggings

395650, 395728, 364DIG1, 364DIG2, 3642412, 36491346, 364941, G06F 1200, G06F 1300

Patent

active

054468620

ABSTRACT:
A memory access system using a machine instruction architecture having separate machine instructions to instruct a start of the atomic memory access and an end of the atomic memory access, respectively, comprises an atomic memory access memory array for storing a start/end of the atomic memory access, an object memory region indicative of information of an access request and an identifier of a subject of the access request. The system can detect the fact that a memory access request with discrepant identifiers has been newly issued for the object memory region to which the atomic memory access is being effected at present and can immediately initiate a processing routine corresponding thereto. The system may also record a memory access history of the new memory request, whether or not the new memory access has been granted, and can continue or suspend an exclusive memory access request currently being executed.

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