Method for reducing probability of dead halt of embedded software

Abstract

The invention relates to embedded software and discloses a method for reducing the probability of dead halt of the embedded software. The method comprises the step of monitoring the operation of the embedded software in a clock program with minimum probability of dead halt, thus reducing the probability of dead halt of the embedded software to minimum. The technical scheme of the method comprises the following key points: flags are respectively set at the inlets and the outlets of all the interruptions, processes and public variables, a monitoring program is set in a clock to monitor the flags, and restoring once an abnormal interruption, process or public variable enters or exits. The invention has the beneficial effects that all the interruptions, processes and public variables are monitored in the clock program with minimum probability of dead halt and the probability of dead halt of the embedded software is reduced to minimum, and the method disclosed by the invention is applicable to the embedded software.

Description

technical field [0001] The invention relates to embedded software, in particular to a method for reducing the crash probability of embedded software. Background technique [0002] During the power-on operation of embedded products, the software is run by several interrupts, processes, and public variables; if it is possible to detect in real time which interrupt or process has a problem, the problematic software can be corrected during the development and testing phase. Even if the product has been handed over to the user, the interrupt, process and public variables that have problems can be self-repaired through the repair program, so as to avoid unreasonable crashes. [0003] In the traditional technology, in order to reduce the probability of embedded software crashes, it is adopted to create a thread or process at will to monitor the operation of other threads or processes. This method can effectively reduce the probability of embedded software crashes. However, for moni...

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Problems solved by technology

[0003] In the traditional technology, in order to reduce the probability of embedded software crashes, it is adopted to create a thread or process at will to monitor the operation of other threads or processes. This method can effectively reduce the probability of embedded software crashes. However, for monitoring other threads or A thread or process created arbitrarily has the same probability of crashing as other threads or processes. In other words, if a thread or process created for monitoring other threads or processes crashes, it will also affect other threads or processes. Therefore, traditional technology cannot minimize the probability of embedded software crash

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