Watchdog implementation method

Abstract

The invention relates to a watchdog implementation method, which comprises the following steps of: creating a plurality of watchdog monitoring points in an application program, and uniformly managingthe watchdog monitoring points by a watchdog component; during creation, specifying a good post-processing scheme of the watchdog monitoring points after a dog call and a hook function called after the dog call. The method has the beneficial effects that a plurality of post-processing schemes are provided when the program is abnormal, a large number of detection counters are not needed, and the CPU consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of software monitoring, and more specifically, to a method for implementing a watchdog. Background technique [0002] In the prior art, the watchdog first creates a monitoring thread in the main program, and its priority is higher than other threads. The monitoring thread performs a clearing operation on the watchdog within a certain period of time when other monitored threads work normally, and the clearing operation is completed by calling the Watchdog driver. If a certain thread fails, the monitoring thread will not perform the dog clearing operation, which also achieves the purpose of automatically restarting the system when the thread fails. If the monitoring thread itself breaks down and cannot perform the dog clearing operation in time, the watchdog will automatically reset and restart. The specific method is that the main program first starts the monitoring thread, and then starts N monitored threa...

AI Technical Summary

Problems solved by technology

[0005] The CPU consumption is high. When there are many monitored threads, maintaining and detecting a large number of counters needs to consume more CPU computing power.

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