| 实时控制系统中优先级反转问题的解决方法 |
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| 引用本文： | 唐宇翔,胡景春.实时控制系统中优先级反转问题的解决方法[J].电子技术应用,2010,36(4). |
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| 作者姓名： | 唐宇翔 胡景春 |
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| 作者单位： | 南昌航空大学信息工程学院,江西,南昌,330063 |
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| 基金项目： | 江西省教育厅科研项目 |
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| 摘 要： | 以实时操作系统μC/OS-Ⅱ为例,分析了产生优先级反转的原因,提出了解决该问题的2种方法,即互斥信号量(Mutex)和实现时间片轮番调度法。在保证共享资源互斥访问的前提下,将优先级反转的发生有效地限制在一个层次上,降解了优先级反转现象的发生。
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| 关 键 词： | 嵌入式控制系统 优先级反转 优先级置顶 优先级继承 |
Research on reducing priority inversion problem in real-time control systems |
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| TANG Yu Xiang,HU Jing Chun.Research on reducing priority inversion problem in real-time control systems[J].Application of Electronic Technique,2010,36(4). |
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| Authors: | TANG Yu Xiang HU Jing Chun |
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| Affiliation: | TANG Yu Xiang,HU Jing Chun (School of Computer,Nanchang Hangkong University,Nanchang 330063,China) |
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| Abstract: | Bases on the real-time operating systemμC/OS-Ⅱ,this paper analyses the reason that priority inversion bechanced and then gives exposition how to adjust this problem by mutual exclusive semaphores and time slice.On the precondition,of ensuring mutex visiting of the shared resources,the proposed approach limits the occurrence of priority inversion on one level,and alleviates the priority inversion phenomenon occurrence inμC/OS-Ⅱ. |
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| Keywords: | real-time system priority inversion priority inheritance |
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