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Generating monotonically increasing time of day values in multiprocessors

机译:在多处理器中单日增加时间值

摘要

Method for generating monotonically increasing time-OF-day (TOD) values in a multiprocessor system, comprising: receiving synchronization impulses 532; and refusing an execution of read instruction of a time-of-day value (STCK B) within processor 504 of the system if said execution is requested after a predefined time after a synchronization impulse, and if trigger signal 502a, indicative of new data received by a related memory 202 external to the processor, has been received after the predefined time. The predefined time is the smallest latency for data value transfer between processors. The memory is a shared cache. The synchronisation pulses are received from PLL 530. A time flag is set after the predetermined time is reached while a reject flag is set if time flag is set and the trigger signal is received. TOD execution is rejected if reject flag is set. Said flags are reset upon reception of synchronisation impulses.
机译:在多处理器系统中产生单调递增的一天中的时间(TOD)值的方法,包括:接收同步脉冲532;以及如果在同步脉冲之后的预定时间之后请求所述执行,并且如果指示接收到新数据的触发信号502a被请求,则拒绝执行系统中的处理器504中的时间值(STCK B)的读取指令在预定时间之后已经接收到由处理器外部的相关存储器202所接收的数据。预定义时间是处理器之间数据值传输的最小等待时间。内存是共享缓存。从PLL 530接收同步脉冲。在达到预定时间之后,设置时间标志,而如果设置了时间标志并且接收到触发信号,则设置拒绝标志。如果设置了拒绝标志,则拒绝执行TOD。所述标志在接收到同步脉冲时被复位。

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