Research on the Problem of Priority Inversion in Embedded RTOS

Xiao Hui Cheng; Jun Quan He; Qi Liang  Liang

doi:10.4028/www.scientific.net/AMM.380-384.3358

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 380-384Research on the Problem of Priority Inversion in...

Research on the Problem of Priority Inversion in Embedded RTOS

Abstract:

Pointing to the unpredictable problems that caused by the priority inversion during the period of using real-time application system, a new improved method, which based on the priority inheritance, was presented. The new method mainly considered the influence that the usage of shared resources impacted on the task scheduling, and recorded the information of each task which asked for the using of system resources by a set of task-shared-resource-link. System would schedule the task according by the records and the task waiting queues. This method was proved as a effective way to solve the phenomenon of priority inversion by experiment in ucos-ii kernel.

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Periodical:

Applied Mechanics and Materials (Volumes 380-384)

Pages:

3358-3361

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.380-384.3358

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Online since:

August 2013

Authors:

Xiao Hui Cheng, Jun Quan He, Qi Liang Liang

Keywords:

Embedded System, Priority Inversion, Real-Time System

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References

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