Method for managing read-write tasks of AUTOSAR (automotive open system architecture) NvM [NVRAM (nonvolatile random access memory) manager] on basis of priority bitmap
A management method and priority technology, applied in the direction of program startup/switching, multi-program installation, etc., can solve the problems of high cost of queue operation and difficult maintenance, and achieve the effect of high time efficiency, simple maintenance and low cost
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[0026] In order to describe the present invention more specifically, the technical solutions and related principles of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] A management method of AUTOSAR NvM read and write tasks based on priority bitmap, as follows:
[0028] Construct 256 groups of ordinary task queues, a group of immediate task queues, a queue mapping table and a priority bitmap ready table;
[0029] Such as figure 1 As shown, the queue mapping table is used to provide pointers to the head and tail of each group of common task queues; it has 256 columns of mapping information corresponding to 256 groups of common task queues, and each column of mapping information includes the queue length and queue head of the corresponding common task queue Pointer and queue tail pointing; by pointing to grab tasks from the head of the queue or insert tasks into the tail of the queue.
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