17-06-2020 дата публикации
Номер: EP3665580A1
The invention relates to a method (100) of operating a cache module (400) comprising cache lines which are the smallest memory blocks of the cache module (400), wherein the method (100) comprises a step (110) of receiving an incoming message for storing, the step (110) of receiving comprising: determining (112) size of the message to in turn determine number of cache lines required for the message; finding (116) available cache lines required for the determined number of cache lines, wherein the step (116) of finding comprises: i. utilizing (116i) an algorithm using a de Bruijn sequence to find an available first cache line by determining the location of a least significant bit of value 1; ii. storing (116ii) the message or, if more than one cache line is required, part of the message in the first cache line in the cache module (400); iii. storing (116iii) the location of the first cache line in a lookup table (300) indexing details of the stored message; iv. repeating steps i to iii if more than one cache line is required for the message. The invention further relates to a computer program product and an electronic control unit comprising, among others, a processor configured to perform the method (100). The invention further relates to a vehicle control unit comprising a plurality of the electronic control units in electronic communication with each other by way of a data bus system.
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