JP2589403B2 - Information processing device - Google Patents

Description

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

〔Overview〕

The present invention provides a means for determining a detection result for a plurality of pieces of failure input information on an information processing apparatus, wherein a counter shared by a task on an application program is provided so that the detection result can be output in real time. It was made.

[Conventional technology]

In an information processing apparatus having an operating system that executes a plurality of application programs in a time-division manner, each application program is divided into a plurality of tasks and executed. Such an information processing device is called a multitask processing device. At this time, the information processing apparatus needs to monitor the occurrence of a failure for each application program, that is, for each task and perform failure processing, and perform a failure information processing task for collecting failure information corresponding to each application program. Is provided. The fault information collected by the fault information processing task is output to the operator and notified.

As shown in FIG. 3, this conventional multitask information processing apparatus outputs a failure information by periodically sampling flags of n pieces of failure input information corresponding to n application programs by one task. By calculating the logical sum, the output state of the fault information is determined.

[Problems to be solved by the invention]

In the conventional example, when calculating the logical sum of the n pieces of fault input information, a method of periodically sampling the n pieces of fault input information and performing a logical calculation and outputting the same is adopted. If the accuracy of the output of the fault detection result with respect to the input information is determined and real-time fault information cannot be input, and if the sampling cycle is shortened to improve the accuracy of the output of the fault detection result, the overall processing There was a disadvantage that the load increased.

An object of the present invention is to eliminate such a drawback and to provide an information processing apparatus having means capable of outputting fault information in real time.

[Means for solving the problem]

The present invention provides an operating system including a plurality of n application programs and having means for executing the application programs in a time-sharing manner, and an operating system provided corresponding to the application programs and having a failure caused by the execution of the application programs. The change point of the fault input information that informs the occurrence
An information processing apparatus comprising: n pieces of fault information processing tasks that are monitored with the same priority for each program; and output means that outputs a fault detection result indicating the presence or absence of fault input information. The count value is increased or decreased when one of the information processing tasks detects a change point of the fault input information. When the count value is a value other than a predetermined value, a fault detection result indicating the presence of fault input information at the output terminal. And a counter for giving

Here, the counter is configured to increment when a fault occurs, decrement when recovering from the fault, and provide a fault detection result indicating fault input information to the output terminal when the count value is a value other than zero. May be.

[Action]

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 content of the counter with the current fault output state in real time. The output state of the fault information is converted only in the case.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows fault information output means using a counter shared by n fault information collecting tasks of this embodiment.

As shown in FIG. 1, this embodiment is provided for a plurality of n application programs which are executed by the operating system in a time-division manner. It comprises n fault information processing tasks A1 to An that monitor with the same priority as each other, and an output terminal C that outputs a fault detection result indicating the presence or absence of fault input information. Further, as a feature of the present invention, When one of the fault information processing tasks A1 to An detects a change point in the fault input information, increments the count when a fault occurs, decrements the count when recovering from the fault, and when the count value is non-zero. A shared counter B, which is a counter configured to provide a failure detection result indicating that failure input information is present at the output terminal C.

 Next, the operation of this embodiment will be described.

n fault information processing tasks An (n = 1 to n) monitor the change points of the fault input information, and when there is a change from no fault to fault occurrence, add the value of the shared counter B, The counter value is subtracted by the change from failure to recovery. Then, each failure information processing task determines the output state of the failure information based on the value of the shared counter B.
That is, information indicating 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 "n" is output.

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 that fault information can be output in real time in response to fault input information. it can.

〔The invention's effect〕

According to the present invention, as described above, n fault information processing tasks share one counter and output fault information based on the counters of each fault information processing task. And the other application tasks can be executed quickly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block 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: Failure information processing task, B: Shared counter,
C: Output terminal.

Claims (2)

(57) [Claims] An operating system comprising a plurality of n application programs and means for executing the application programs in a time-sharing manner, and an obstacle provided for the application programs and associated with the execution of the application programs The system comprises: n fault information processing tasks for monitoring change points of fault input information for notifying the occurrence of the fault with the same priority for each application program; and output means for outputting a fault detection result indicating presence / absence of fault input information. In the information processing device, the output means increases or decreases the count value when one of the fault information processing tasks detects a change point of the fault input information, and outputs the count value when the count value is a value other than a predetermined value. Gives a fault detection result indicating the presence of fault input information to the output terminal An information processing device comprising a counter. 2. The method according to claim 1, wherein the counter is incremented when a fault occurs.
2. The information processing apparatus according to claim 1, wherein the information processing apparatus is configured to count down at the time of recovery from the failure and to provide a failure detection result indicating presence of failure input information to the output terminal when the counted value is a value other than zero.