JPH04107641A - Information processor - Google Patents

Abstract

PURPOSE:To output the fault detecting result in real time by providing a shared counter whose count value is increased or decreased when one of fault information processing tasks detects the changing point of the fault input information. CONSTITUTION:Plural (n) pieces of application programs are provided opposite to (n) pieces of fault information processing tasks An (n = 1 - n) and carried out in time division by an operating system. The tasks A1 - An monitor the changing point of the fault input information and adds together the value of a shared counter B when a fault occurs. Then the information showing the absence of a fault with the value of the counter B equal to '0' and the presence of the fault with the value of the counter B equal to '1 - n' respectively are outputted. Thus the fault information is outputted in real time to the fault input information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is used in an operating system for an information processing device. In particular, the present invention relates to means for determining fault detection results for n pieces of fault input information for the entire device.

〔overview〕

The present invention provides an application for determining detection results for multiple fault input information on an information processing device.
By providing a counter shared by tasks in the program, detection results can be output in real time.

[Conventional technology]

Conventionally, as shown in FIG. 2, the output state of fault information was determined by periodically sampling flags based on n pieces of fault input information in one task and calculating the logical sum.

[Problem to be solved by the invention]

In the conventional example, when calculating the logical sum of n pieces of fault input information, a method was adopted in which the n pieces of fault input information were periodically sampled, logical calculations were performed, and output. The accuracy of outputting fault detection results for information is determined, and if real-time fault information cannot be output, and if the sampling period is shortened to improve the accuracy of outputting fault detection results, the overall processing load will increase. There was a drawback that there were a lot of

SUMMARY OF THE INVENTION The present invention aims to eliminate such drawbacks and to provide an information processing device having means capable of outputting fault information in real time.

[Means for Solving the Problems] The present invention provides an operating system which is provided with a plurality of n application programs and has an environment for executing the application programs in a time-sharing manner, and which is provided to correspond to the above application programs. Information that includes n fault information processing tasks that monitor changes in fault input information as the application program is executed, each with the same priority, and an output terminal that outputs a fault detection result indicating the presence or absence of fault input information. In the processing device, when one of the fault information processing tasks detects a change point in the fault input information, the count value is increased or decreased, and when this count value is a value other than a predetermined value, the fault input information is output to the output terminal. The present invention is characterized in that it includes a counter that provides a fault detection result indicating that there is a fault.

Here, the counter is configured to increase the count when a failure occurs, decrement the count when the failure is recovered, and to provide a failure detection result indicating the presence of failure input information to the output terminal when the count value is a value other than zero. It's okay.

[Effect]

The n fault information processing tasks increase or decrease the content of the counter based on the change point of the fault input information, and each fault information processing task compares the counter content and the current fault output state in real time, and detects discrepancies. The output state of fault information is changed only when the error occurs.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows fault information output means using a counter shared by n fault information collection tasks in this embodiment.

As shown in FIG. 1, this embodiment is provided for a plurality of n application programs that are executed in a time-sharing manner by an operating system, and detects the change points of failure input information accompanying the execution of these application programs. The present invention is characterized by comprising n failure information processing tasks A1 to An that are monitored with the same priority, and an output terminal C that outputs a failure detection result indicating the presence or absence of failure input information. When one of the failure information processing tasks AI or An detects a change point in the failure input information, it increments the count if the failure has occurred, decrement the count if the failure has been recovered, and returns the count value to a value other than zero. A shared counter B is provided as a counter configured to sometimes provide an output terminal C with a fault detection result indicating the presence of fault input information.

Next, the operation of this embodiment will be explained.

n failure information processing tasks An (n = l to n) monitor the change point of failure input information, and when there is a change from no failure to failure occurrence, increment the value of the shared counter B, The counter value is decremented when there is a change from failure to failure recovery. Then, each fault information processing task determines the output state of the fault information based on the value of the shared counter B. That is, information is output that there is no failure when the value of the counter is "0" and that there is a failure when the value of the shared counter B is "1" to "rn".

In an operating system that has an environment in which multiple application tasks are executed in a time-sharing manner, all application tasks execute processing in a time-sharing manner, so failure information can be output in real time in response to failure input information. can.

〔Effect of the invention〕

As explained above, the present invention allows n fault information processing tasks to share one counter and output fault information based on the counter of each fault information processing task. This has the effect of allowing other application tasks to be executed quickly.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention. FIG. 2 is a conceptual diagram showing the operation of the embodiment. FIG. 3 is a configuration diagram of a conventional example. A1 to An...fault information processing task, B...shared counter, C...output terminal.

Claims (1)

[Claims] 1. A plurality of n application programs,
An operating system having a means for executing this application program in a time-sharing manner; and n operating systems that are provided corresponding to the above application program and monitor changes in fault input information accompanying the execution of this application program with the same priority. In an information processing device equipped with a fault information processing task of An information processing device comprising: a counter that increases or decreases a count value and provides a failure detection result indicating the presence of failure input information to the output terminal when the count value is a value other than a predetermined value. 2. The above-mentioned counter is configured to increase the count when a failure occurs, decrement the count when the failure is recovered, and to provide a failure detection result indicating the presence of failure input information to the output terminal when the count value is a value other than zero. The information processing device according to claim 1.