A method for allocating memory space of airborne digital map software map data operation

Abstract

The invention discloses a method for distributing running memory space of map data of airborne digital map software. The method comprises the following steps that first, a memory initialized configuration file is established according to geographic element classification; second, initial memory space is applied according to the configuration file; third, when a system operates, the right to use of the memory space is acquired according to geographic elements needing to be loaded, expansion is conducted according to the actual using condition, and memory using information is recorded; fourth, the memory using information is analyzed, and the memory initialized configuration file is updated. According to the method for distributing the running memory space of the map data of the airborne digital map software, memory fragments and memory waste are reduced, the method for distributing the memory space of the map data of the airborne digital map software according to needs is achieved, and the memory using efficiency is improved.

Description

technical field [0001] The invention relates to a method for allocating memory space required by map data when airborne digital map software is running. Background technique [0002] Airborne digital map is an important part of modern aircraft avionics system. Because the aircraft has very high requirements on safety, stability, and real-time performance, the software and hardware of its airborne system also have strict requirements. In terms of digital map software, since a large amount of digital map data needs to be used for map display, the stability and display fluency of the airborne digital map software are closely related to the allocation method of data memory space during the calling process. [0003] Due to the uncertainty of the detailed level of geographic information in map data, the information capacity of map data in different regions, different scales, and different data precisions is also different. As a result, it is impossible to accurately predict the m...

AI Technical Summary

Problems solved by technology

The method of dynamic memory allocation requires frequent applications to release memory, which will affect the operating efficiency of the program, and is likely to cause a large number of memory fragments, affecting the stability of program operation; the static memory allocation method is likely to cause a huge waste of memory space, and cannot handle the information capacity of map data Overrun situation

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