Method for monitoring computer operating system in starting process

Abstract

The invention discloses a method for monitoring a computer operating system in the system starting process without increasing hardware cost or influencing system starting time. The method comprises the following steps of (1) after the system is powered on and started, opening real-tine interruption, and pre-loading an interruption module code of the system and a dog feeding scheme code in the system starting process as an emergency loading part into the system; (2) executing the dog feeding scheme code in the emergency loading part, and completing dog feeding by periodically triggering the real-tine interruption with an appointed timer by means of the opened real-time interruption; (3) appointing a counter in a dog feeding function to judge whether system start is overtime or not, and if the system start is overtime, not feeding dog and reloading by using a hardware watchdog rest system; (4) after the start is completed, relieving the appointed timer in a system task, and submitting a hardware watchdog to software of the system for arrangement. The method can solve the problem that the system start fails because the dog cannot be fed in the system starting process.

Description

technical field [0001] The invention relates to a monitoring method for a computer operating system, in particular to a monitoring method for an embedded computer operating system during startup. Background technique [0002] Usually, in a microcomputer system composed of a single-chip microcomputer, the work of the single-chip microcomputer is often interfered by an external electromagnetic field, causing the program to run away and fall into an endless loop. The normal operation of the program is interrupted, and the system controlled by the single-chip microcomputer cannot Continuing to work will cause the entire system to stagnate and produce unpredictable consequences. Therefore, out of consideration for real-time monitoring of the operating status of the single-chip microcomputer, a chip specially used to monitor the running status of the single-chip microcomputer program has been produced, commonly known as the "watchman". Dog" (English name watchdog). [0003] Watch...

AI Technical Summary

Problems solved by technology

This method can not only solve the problem of "feeding the dog" of the system during startup, but also enable the watchdog to monitor the system startup, but it must add a peripheral (i.e. the hardware watchdog) , which will undoubtedly increase the cost of the system; at the same time, for the soft reset of the system, the reset may only be the CPU rather than the peripherals, causing the soft restart of the system to enter the original problem: the "Hello" cannot be reset during the startup process. dog" causes the startup to fail

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