METHOD AND DEVICE TO CONTROL THE CONFLICTS POSED BY MULTIPLE ACCESSES TO A SAME CACHE-MEMORY OF A DIGITAL DATA PROCESSING SYSTEM COMPRISING AT LEAST TWO PROCESSORS EACH POSSESSING A CACHE

摘要

A data processing system includes at least two processors, each having a cache memory containing an index section and a memory section. A first processor performs a task by deriving internal requests for its cache memory which also may respond to an external request derived from the other processor which is simultaneously processing a task. To avoid a conflict between the simultaneous processing of an internal request and of an external request by the same cache memory, one request may act on the other by delaying its enabling or by suspending its processing from the instant at which these requests are required to operate simultaneously on the index section or the memory section of the cache memory of the processor affected by these requests. Thereby, the tasks are performed by the system at an increased speed.