Use of Helper Threads for OS Support in the Multithreaded Embedded TriCore 2 Processor
Use of Helper Threads for OS Support in the Multithreaded Embedded TriCore 2 Processor
复制标题
在多线程嵌入式 TriCore 2 处理器中使用辅助线程来支持操作系统
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
T. Ungerer
中科院分区：
文献类型：
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作者：
Florian Kluge;Jörg Mische;S. Uhrig;T. Ungerer
英飞凌为他们的TriCore 2微控制器配备了多线程功能。随着内存保护技术的日益重要，它也实现了一种基于范围的内存保护系统。基于多线程功能，辅助线程可以独立于实时应用程序线程在线程槽中运行，以支持汽车系统中使用的嵌入式操作系统，如OSEK或AUTOSAR OS。我们表明，我们的概念可以节省70%以上的任务切换时间，通过预加载应用程序的内存保护寄存器，预测下一步将被调度。此外，我们还建议对TriCore2架构进行修改，以支持我们的概念。
Infineon equipped their TriCore 2 microcontroller with multithreading capabilities. As memory protection techniques are getting more important, it also implements a rangebased memory protection system. Based on the multithreading capability a helper thread can run in a thread slot in separation from the real-time application thread to support embedded operating systems like OSEK or AUTOSAR OS used in automotive systems. We show that our concept can save more than 70% of task switching time by pre-loading the memory protection registers for the application that is predicted to be scheduled next. Also, we propose modifications to the TriCore 2 architecture that would support our concept.