OSEK操作系统定时机制优化设计  

Optimization Design of Timer Mechanism in OSEK Operating System

作　　者：张激[1] 包晟临[1] 

机构地区：[1]华东计算技术研究所,上海200233

出　　处：《计算机工程》2010年第17期252-254,共3页Computer Engineering

基　　金："核高基"重大专项基金资助项目"汽车电子实时嵌入式操作系统的系统服务与开发环境研制"(2009ZX01038-001-01)

摘　　要：OSEK/VDX操作系统标准是被汽车电子业界普遍接受的工业标准。为了满足汽车电子可靠性和实时性的要求,需要尽可能提高操作系统的定时机制对定时事件响应的速度。因此,分析定时事件在嵌入式系统中的表示,通过使用ICTOH算法、堆排序和硬件计数器对OSEK操作系统的定时机制进行优化设计。对比实验结果表明,该方法能获得更高的效率。OSEK/VDX Operating System（OS） specification is an international standard which is accepted by worldwide automotive electronics industry. To satisfy the reliability and real-time request of automotive electronics system, the timer mechanism of OS must handle the timer in a very effective way. This paper analyses the presentation of timer event in an embedded system, and proposes the approach which uses the ICTOH algorithm, heap sort algorithm and hardware counter to optimize the timer mechanism in OSEK Operating System. The comparison results show the proposed method is more effective than present methods.

关 键 词：汽车电子 OSEK标准 定时机制 

分 类 号：N945[自然科学总论—系统科学]