一种嵌入式多处理器SOC动态存储管理体系

An Embedded Multi-processor SOC Dynamic Memory Management System

嵌入式实时多处理器SOC片上全局内存的管理方式有动态与静态两种,静态管理不适合实时、快速、数据密集型的嵌入式应用;动态管理则由于片上全局内存分配的不确定性以及高WCET(最坏情况执行时间)等因素导致管理效率低下。提出一种建立在SOC动态内存管理单元之上的可靠高效的片上内存的动态管理体系,并由此引出两级管理结构,同时阐述了修改RTOS以支持该体系的方法。

On the embedded real-time multi-processor SOC chip the overall memory management has two modes： the dynamic mode and the static mode. The static management does not suit the real-time, fast and dense-data application, while the dynamic management has a lower efficiency due to the memory assignment＇s uncertainty, high WCET （worst circumstance execution time） and other factors. This article proposed a reliable and effective dynamic memory management system based on the SOC dynamic memory management unit, deduce a two-layer management structure, simultaneously expatiate RTOS＇ s revises to support this system.