JPH08202587A - Digital processor provided with software self-diagnostic function - Google Patents

Abstract

PURPOSE: To detect the abnormality of a processing task other than a WDT (watchdog timer) task, and to take an appropriate measure against the abnormality in respect of a digital processor provided with a software self-diagnostic function. CONSTITUTION: In the digital processor provided with the software self- diagnostic function provided with an abnormality occurrence monitoring task 6 to execute the clearing processing of the counter 4 of an abnormality occurrence monitoring means 2 within monitoring time and the processing task 8, a holding means 10 to receive the operating state reporting information of the processing task 8 and a judging means 12 to judge whether the operating state reporting information received by the holding means 10 shows the normality of a digiatal processing task or not are provided, and the counter 4 is cleared at the time of the judgement of the normality, and the counter 4 is not cleared at the time of the judgement of the abnormality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital processor having a software self-diagnosis function capable of monitoring an abnormality of a processing task other than an abnormality occurrence monitoring task. Digital transmission devices and the like have come to be configured to perform transmission control and the like by digital processing. The digital processing is processing by software including a plurality of tasks.

Therefore, 1 which constitutes the software
If an abnormality occurs in the processing of one or two or more tasks, even if the other tasks are operating normally, transmission control will be hindered, so it is necessary to monitor the movement of software.

[0003]

2. Description of the Related Art In a conventional digital transmission device,
For example, it is required to monitor operations, refine management information, and notify maintenance personnel of the degree of influence on the line service. Such processing is performed by software processing including a plurality of tasks as described above. In order to confirm that the software is operating normally or to minimize the effect on the line service when the abnormal operation occurs, the software self-diagnosis function
It is installed in digital transmission equipment.

The conventional function of monitoring the normality of the software is as follows. Counter WCN (Watchdog Counter) provided in the abnormality occurrence monitoring function [WDT (Watchdog Timer)] 54 (see WDT in FIG. 26)
60 (see WCN in FIG. 27) is registered by the WDT task W activated by the CPU 50 (W in FIG. 27).
If the RR (Watchdog Refrence Register) 62 is cleared within a preset time, it is determined that the RR is operating normally and the processing is continued. Reference numeral 64 in FIG. 27 is a frequency divider for counting up the counter 60,
65 is a bus.

However, if it is not cleared, it is considered that an abnormality (runaway) has occurred in the software, and the device is reset as a remedy for device recovery. That is, the processing by the CPU 50 is redone.

[0006]

However, in the above-mentioned rescue processing, the WDT task is normally started by the CPU, and
As long as the DT task is operating normally, even if the task B of the other tasks, for example, the tasks A, B, and C performing the line service processing shown in FIG.
Since the task W normally resets the WDT 54, no remedy for the CPU is taken. That is, the digital transmission device continues to operate without being able to normally continue the line service due to the abnormal task described above.

The present invention was created in view of such technical problems. When an abnormality occurs in a processing task other than the WDT task, the abnormality can be detected and appropriate measures can be taken for the abnormality. It is an object of the present invention to provide a digital processing device having a software self-diagnosis function.

[0008]

FIG. 1 shows a principle block diagram of claims 1 to 4, claim 13 and claim 14. FIG. 2 shows claims 5, 13, and 1.
4 shows a principle block diagram of the invention described in FIG. FIG. 3 shows a principle block diagram of the invention according to claims 6, 7, 13, and 14. FIG. 4 shows claims 8 and 1.
3 and a block diagram showing the principle of the invention according to claim 14. FIG. 5 shows a principle block diagram of the invention according to claims 9 to 11, claim 13 and claim 14. Figure 6
Shows a principle block diagram of the invention according to claim 12, claim 13, and claim 14.

According to a first aspect of the present invention, as shown in FIG. 1, a software self-diagnosis having an abnormality occurrence monitoring task 6 and a processing task 8 for performing a clearing process of the counter 4 of the abnormality occurrence monitoring means 2 within a monitoring time. In a digital processing device having a function, it is determined whether holding means 10 receives operation status notification information of the processing task 8 and whether the operation status notification information received by the holding means 10 indicates that the digital processing task is normal. Is provided in the abnormality occurrence monitoring task, and the counter 4 is cleared when the determination means 12 indicates a normal determination, but the counter 4 is not cleared when an abnormality determination is indicated. .

According to a second aspect of the present invention, as shown in FIG. 1, in the digital processing apparatus having the software self-diagnosis function according to the first aspect, the processing task 8 is a plurality of processings that operate periodically and sequentially. It is characterized by being a task. The invention according to claim 3 is, as shown in FIG.
2. The digital processing device having a software self-diagnosis function according to claim 1, wherein the processing tasks 8 are a plurality of processing tasks that operate simultaneously at the same time.

According to a fourth aspect of the present invention, as shown in FIG. 1, in the digital processing device having the software self-diagnosis function of the second or third aspect, the operation status notification information is an event flag, or It is characterized by being an email. According to a fifth aspect of the present invention, as shown in FIG. 2, in the software self-diagnosis method of the digital processing apparatus according to the fourth aspect, when the counter 4 is cleared, the process corresponding to the mail from the contents of the mail. It is characterized in that a performance judgment means 14 for judging the performance of a task and an alarm output means 16 capable of outputting an alarm corresponding to the performance judgment are provided in the abnormality occurrence monitoring task.

According to a sixth aspect of the present invention, as shown in FIG. 3, a software self-diagnosis having an abnormality occurrence monitoring task 6 and a processing task 8 for clearing the counter 4 of the abnormality occurrence monitoring means 2 within a monitoring time. In the digital processing device having a function, the processing task 8 is a plurality of processing tasks 8A that temporarily operate, and a sending unit that sends an operation status notification information transmission request to the processing task 8A, and the processing task. 8A, when the operation status notification information is received, the clearing means 18 for clearing the counter 4; and when the operation status notification information is received only from a part of the processing task 8A, the counter 4 clear processing and Alternatively, the abnormality occurrence monitoring task is provided with a processing means 20 capable of outputting an alarm for each processing task.

According to a seventh aspect of the present invention, as shown in FIG. 3, in the digital processor having the software self-diagnosis function according to the sixth aspect, the operation status notification information is an event flag or a mail. Characterize. According to an eighth aspect of the present invention, as shown in FIG. 4, in the digital processing device having the software self-diagnosis function according to the seventh aspect, the determination means for determining the performance of the processing task corresponding to the mail from the content of the mail. 22 and
Alarm output means 24 capable of outputting an alarm corresponding to the performance judgment is provided.

According to a ninth aspect of the present invention, as shown in FIG. 5, a software self-diagnosis having an abnormality occurrence monitoring task 6 and a processing task 8 for clearing the counter 4 of the abnormality occurrence monitoring means 2 within a monitoring time. In the digital processing device having a function, the processing tasks 8 are a plurality of tasks 8B that perform their own processing in a permissible processing time longer than the activation cycle of the abnormality occurrence monitoring task.
The abnormality occurrence monitoring task is provided with the first processing means 26 that clears the counter 4 when the processing end notification information is received from the corresponding processing task within the allowable processing time from the notification time of the processing start notification information from B. It is characterized by that.

According to a tenth aspect of the present invention, as shown in FIG. 5, in the digital processing device having the software self-diagnosis function according to the ninth aspect, when the processing time of the processing task exceeds the allowable processing time, a counter is provided. The second processing means 28 capable of outputting the clear processing of No. 4 and / or the alarm for each processing task is provided in the abnormality occurrence monitoring task.

According to an eleventh aspect of the present invention, as shown in FIG. 5, in the digital processing apparatus having the software self-diagnosis function of the ninth or tenth aspect, the operation status notification information is an event flag, or It is characterized by being an email. According to a twelfth aspect of the present invention, as shown in FIG. 6, in the digital processing apparatus having the software self-diagnosis function of the eleventh aspect, a judgment means for judging the performance of the processing task corresponding to the mail from the contents of the mail. 30 and an alarm output means 32 capable of outputting an alarm corresponding to the performance judgment.

According to a thirteenth aspect of the present invention, as shown in FIGS. 1 to 6, in the digital processor having the software self-diagnosis function according to any one of the second to twelfth aspects, the processing task 8 is: Of the processing tasks that operate cyclically sequentially, the processing tasks that operate cyclically simultaneously, the processing tasks that operate temporarily, and the processing tasks that operate with an allowable processing time longer than the activation cycle of the abnormality occurrence monitoring task, It is characterized in that it is any two or more processing tasks.

According to a fourteenth aspect of the present invention, as shown in FIGS. 1 to 6, in the digital processor having the software self-diagnosis function according to any one of the first to thirteenth aspects, the digital processor is a transmitter. It is a device.

[0019]

According to the invention described in claim 1, the counter 4 of the abnormality occurrence monitoring means 2 judges by the judging means 12 that the processing task is abnormal from the operation status notification information from each processing task received by the holding means 10. If not, the counter is cleared, but if an abnormality is judged, the counter is not cleared.

Therefore, although the abnormality occurrence monitoring task is operating normally, when the processing task is abnormal, the counter 4 of the abnormality occurrence monitoring means cannot be cleared. That is,
A reset request due to a processing task abnormality can be sent to the CPU to prevent a program runaway due to a processing task abnormality. The reliability of the device is improved.

The invention according to claim 2 is a processing task in which the processing tasks operate cyclically and sequentially, and the invention in claim 3 is a processing task in which the processing tasks operate cyclically simultaneously. . The action and effect are the same as those of the first aspect of the invention, except for the difference caused by the difference in processing tasks. The invention according to claim 4 is claim 2 or claim 3.
In the described invention, the operation status notification information is an event flag or an email.

The invention according to claim 5 is characterized in that the operation status notification information is sent as an e-mail.
An alarm is generated according to the contents of the mail while enjoying the effect of the invention described. The invention described in claims 6 to 8 is such that the effects of the invention described in claims 1 to 5 can be obtained even for a task of a type in which a processing task temporarily operates.

The invention according to claims 9 to 12 also relates to a task of a type in which the processing task has an allowable processing time longer than the activation cycle of the abnormality occurrence monitoring task.
Through this, the effects of the invention of claim 5 can be enjoyed. The invention according to claim 13 is based on the start time of a task of a type that periodically operates as a processing task, a task of a type that simultaneously operates periodically, a task of a temporarily operating type, and an abnormality occurrence monitoring task. When a task with a type that has a long allowable processing time is mixed, a reset request due to an abnormal processing task causes CP
It is provided to prevent the program from running out of control due to an abnormality in a processing task sent to U and to improve the reliability of the device.

According to a fourteenth aspect of the present invention, the digital processing device is used as a transmission device to minimize the influence on the line service and to improve the reliability of the device.

[0025]

FIG. 7 shows the structure of a novel WDT used for implementing the invention described in claims 1 to 14. Since the counter (WCN) 60, the register (WRR) 62, and the divider 64 shown in FIG. 7 are the same constituent elements shown in FIG. 27, the same reference numerals are given. Reference numeral 66 is an alarm generation reference register. This alarm occurrence reference register 6
Reference numeral 6 indicates the type of the alarm and the presence / absence of the alarm when there is a bit in a register position corresponding to a task (hereinafter referred to as a processing task) that constitutes the software of the system, for example, (1) and (2). Is. The alarm occurrence reference register 66 is referred to by a program (not shown) executed by the CPU 50 via the bus 65, and displays an alarm indicator (not shown) corresponding to the register position of the alarm occurrence reference register 66.

FIG. 8 shows claims 1, 2, 4, and
An embodiment of the invention described in claims 5, 13, and 14 is shown. FIG. 19 shows a processing flow of an embodiment of the invention of claim 1, claim 2, claim 4, claim 13 and claim 14 having the same structure as that of FIG. In this embodiment, as shown in FIG.
The case where there are two processing tasks A, B, and C is shown, and these processing tasks are processed in the order of A, B, and C. When the processing task A finishes its processing, the next processing task B
A processing end signal (hereinafter referred to as an event flag) is sent to the. Similarly, when the processing task B finishes processing, an event flag is sent to the processing task C.

When the processing task C has completed the processing, it sends an event flag to the WDT task W. Each event flag is set to a storage location accessible by the CPU of a register or memory (not shown) (hereinafter referred to as “arrival”). If the WDT task W activated by the CPU 50 at regular intervals and receiving the event flag has not arrived by judging whether the event flag has arrived (see NO in S1 of FIG. 9), the WDT task W Process is completed, that is, WDT
To continue counting up the counter provided in. On the contrary, if the event flag is set (see YES in S1 of FIG. 9), the counter 60 is cleared (FIG. 9).
See S2). Normal processing of each task continues.

In this way, even if the WDT task is operating normally, the operating status of the entire system can be determined from the abnormal operation of the processing task. For example, in the transmission device, the influence on the line service can be minimized, and the reliability of the device is improved. FIG. 10 shows an embodiment in which a mail is used instead of the event flag, which has the same configuration as that of the embodiment shown in FIG. 8 and includes claim 1, claim 2, claim 5, claim 13,
And a processing flow of an embodiment of the invention described in claim 14. When the mail is used, even if the mail reaches the WDT task W and the counter 60 is reset, the performance is judged from the contents of the mail, for example, the processing time (see S3 in FIG. 10), and it is not abnormal. At this time (see NO in S4 of FIG. 10), the processing of the WDT task ends.

When an abnormality is judged in the performance judgment, that is, when the processing time of each processing task or the total processing time of all processing tasks is longer than the specified processing time (Y in S4 of FIG. 10).
ES reference), the WDT task W outputs the alarm from an annunciator (for example, a display) with reference to the CPU 50 after selecting a rescue procedure, that is, setting a bit in the alarm generation reference register 66 (see FIG. 9). (See S5).

When the mail has not arrived (see FIG. 10)
No.), the WDT task does not clear the counter of the WDT 54. Therefore, when the monitoring time elapses,
As in the conventional case, a reset request is issued to the CPU. In this way, even if the WDT task is operating normally, when an error occurs in the processing task and the mail does not reach the WDT task, a reset request is issued to the CPU. It can be avoided. Even if an e-mail arrives, the processing performance of the device can be judged from the e-mail, and notification can be made according to the content of the e-mail, so a device failure can be detected early and the reliability of the device can be improved. Will be improved.

FIG. 11 shows an embodiment of the invention described in claim 1, claim 3, claim 4, claim 5, claim 13 and claim 14. FIG. 12 shows a processing flow of an embodiment of the invention described in claim 1, claim 3, claim 4, claim 13, and claim 14. In this embodiment, each processing task A, B, C starts processing simultaneously.

In this embodiment, when all the event flags reach the WDT task, the counter 60
Is cleared (YES in S1 of FIG. 12, see S2).
When it has not arrived (refer to NO in S1 of FIG. 12), the processing task corresponding to the event flag that has not arrived is judged from the event flag, the rescue procedure is selected, and the WDT 54 is accessed according to the selection result (FIG. 12). See S3).
The remedy means the occurrence of the above-mentioned alarm and the counter 60.
In the case of a processing task of (1) or a processing task having a high degree of importance, only the alarm is given and the processing of clearing the counter 60 is not performed. When the counter 60 is not cleared, the WDT 54 issues a reset request to the CPU 50 as in the conventional case.

In this way, when the WDT task is operating normally and the processing task becomes abnormal, it is possible to judge the abnormality of the processing task corresponding to the event flag and take remedial action for the abnormality. it can. FIG.
Is the same as the configuration of the embodiment shown in FIG. 11, and claims 1, 3, 5, 13, and 14
3 shows a processing flow of an embodiment of the described invention. This embodiment is an example in which a mail is used instead of the event flag in the embodiments shown in FIGS. Steps S1, S2 and S6 shown in FIG. 13 are the same as steps S1, S2 and S3 shown in FIG. Further, steps S3, S4 and S5 are the same as in FIG.
Since it is the same as steps S3, S4, and S5, the detailed description thereof will be omitted.

The effect is to judge the performance (including the case where all mails are not delivered) from the contents of the mail, and if the judgment is abnormal, it is possible to take remedy for the abnormality. . 7 to 9, 11, and 12, the WDT 54 corresponds to the abnormality occurrence monitoring means 2 of FIG. 1, and the counter 60 corresponds to the counter 4 of FIG. The WDT task W corresponds to the abnormality occurrence monitoring task 6 in FIG. 1, and the processing tasks A, B, and C are shown in FIG.
Processing task 8 of. The register or memory accessible by the CPU 50 is the holding means 10 of FIG.
The CPU 50 corresponding to the program for performing the process of step S1 of FIGS. 9 and 12 corresponds to the determination unit 12 of FIG.

7, 8, 10, and 13, the WDT 54 corresponds to the abnormality occurrence monitoring means 2 of FIG. 2, and the counter 60 corresponds to the counter 4 of FIG. W
The DT task W corresponds to the abnormality occurrence monitoring task 6 of FIG. 1, and the processing tasks A, B, and C correspond to the processing task 8 of FIG. A register accessible by the CPU 50,
Alternatively, the memory corresponds to the holding unit 10 of FIG. 2, and is a program that executes the process of step S1 of FIG.
It corresponds to the determination means 12 in FIG. CPU50, a program for performing the processes of steps S3 and S4 of FIGS.
The register or memory accessible by
The alarm generation reference register 66, the program for executing the process of step S5 of FIGS. 10 and 13, the CPU 50, and the display correspond to the alarm output unit 16 of FIG.

FIG. 14 shows an embodiment of the invention described in claims 1 and 9 to 14. FIG. 15 shows a processing flow of an embodiment of the invention described in claim 1, claim 9 to claim 11, claim 13, and claim 14. In this embodiment, the processing task can be monitored even when the processing time of the processing task exceeds the activation period of the WDT task. The start flag S and the end flag E are sent from each processing task to the WDT task.

According to this embodiment, for each processing task,
WD whose start flag S is executed by the CPU 50
When it is not set in the register accessible by the T task (hereinafter referred to as not received) (see FIG. 1).
The counter 60 is cleared (see NO in S1 of 5) (see S6 in FIG. 15). When the start flag S is received (see YES in S1 of FIG. 15), the count value of the counter of the WDT task W is smaller than the allowable processing time given in advance to the processing task corresponding to the start flag S, and the end flag E 15 is not received (YES in S2 of FIG. 15, NO in S3), the counter of the WDT task W is incremented (see S4 of FIG. 15) and the counter 60 is cleared (see S6 of FIG. 15).

When the count value of the counter of the WDT task W is smaller than the permissible processing time given in advance to the processing task corresponding to the start flag S and the end flag E is received (YES in S2 of FIG. 15, S3). YE
(See S), the counter value of the WDT task W counter and the start flag S are cleared (see S5 in FIG. 15), and the counter 60 is cleared (see S6 in FIG. 15).

When the count value of the counter of the WDT task W becomes larger than the allowable processing time given in advance to the processing task corresponding to the start flag S (see NO in S2 of FIG. 15), the state of this count value The processing task that has caused the problem is determined, the rescue procedure is selected, the WDT 54 is accessed according to the selection result (see S7 in FIG. 15), and the count value of the counter of the WDT task W and the start flag S are cleared. The processing of the WDT task ends (see S8 in FIG. 15). The rescue procedure here is the same as that described above.

In this embodiment, when a processing task that takes an allowable processing time longer than that time even if the time to enter the repair processing arrives, the allowable processing is continued while continuing the processing task. When the time is reached, the above-mentioned remedy can be taken. 7, 14,
15, the WDT 54 corresponds to the abnormality occurrence monitoring means 2 in FIG. 5, and the counter 60 is the counter 4 in FIG.
Corresponding to. The WDT task W corresponds to the abnormality occurrence monitoring task 6 of FIG. 5, and the processing tasks A, B, and C correspond to the processing task 8B of FIG. Steps S1, S2 of FIG.
CPU50, a program for performing the processing of S3, S5, and S6
Corresponds to the first processing means 26 in FIG. The program that performs the process of step S7 in FIG. 15 and the CPU 50 correspond to the second processing unit 28 in FIG.

FIG. 16 shows the processing flow of one embodiment of the invention described in claims 1 and 9 to 14, which has the same structure as that of the embodiment shown in FIG. In this embodiment, the embodiment shown in FIGS. 14 and 15 is configured by using an event flag instead of the event flag. As shown in FIG. 16, the operating state of the processing task can be determined more precisely from the contents of the start flag S and the end flag E (start time, processing time, end time, etc.) (see S9 in FIG. 16). . Since the other steps in FIG. 16 are the same as those in FIG. 15, the same reference numerals are given and the detailed description thereof is omitted.

By changing the event flag to mail, the monitoring information becomes more precise, so that the processing task can be more precisely monitored. 7, 14, and 16, the WDT 54 corresponds to the abnormality occurrence monitoring means 2 in FIG. 6, and the counter 60 corresponds to the counter 4 in FIG. The WDT task W corresponds to the abnormality occurrence monitoring task 6 of FIG. 6, and the processing tasks A, B, and C correspond to the processing task 8B of FIG. Steps S1, S2, S of FIG.
CPU50, which is a program for processing S3, S5, and S6
Corresponds to the determination means 26 in FIG. The program that performs the process of step S7 of FIG. 16, the CPU 50, corresponds to the second processing unit 28 of FIG. The program that performs the process of step S9 in FIG. 16, the CPU 50, corresponds to the determination unit 26 in FIG. 6, and the step S9, the CPU 50, and the display in FIG. 16 correspond to the alarm output unit 32 in FIG.

FIG. 17 shows an embodiment of the invention described in claims 1, 6 to 8 and 14. FIG.
8 is claim 1, claim 6, claim 7, and claim 14.
3 shows a processing flow of an embodiment of the described invention. In this embodiment, an event flag transmission request is sent from the WDT task to each processing task, and each processing task that responds to the request returns an event flag to the WDT task W.

Therefore, when the event flag is returned from each processing task, the counter 60 of the WDT 54 is cleared (see YES in S1 and S2 in FIG. 18). After that, the event flag transmission request is sent to each processing task (see S3 in FIG. 18). If some or all of the event flags from each processing task have not been returned (see NO in FIG. 18), the processing task that is operating abnormally is determined based on the presence or absence of the event flag, and the rescue procedure is selected. The WDT 54 is accessed according to the selection result (see S4 in FIG. 18). Then, the event flag transmission request is sent to each processing task (see S3 in FIG. 18). The rescue procedure is
Same as above.

Also in this embodiment, the WDT task can judge the operation status based on the presence / absence of the event flag, select the remedy procedure when an abnormality occurs, and send the reset request from the WDT to the CPU 50. 7, 17, and 18, the WDT 54 corresponds to the abnormality occurrence monitoring means 2 in FIG. 3, and the counter 60 corresponds to the counter 4 in FIG. The WDT task W corresponds to the abnormality occurrence monitoring task 6 in FIG. 3, and the processing tasks A, B, and C are shown in FIG.
Processing task 8A. The WDT task W is shown in FIG.
18 corresponding to the sending means 17 of FIG.
The CPU 50, which is a program for performing the processing of, corresponds to the clearing means 18 of FIG. The program for performing the process of step S4 in FIG. 18, the CPU 50, corresponds to the processing unit 20 in FIG.

FIG. 19 shows the processing flow of an embodiment of the invention described in claim 1, claim 6, claim 8 and claim 14 having the same configuration as that of the embodiment shown in FIG. In this embodiment, the embodiment shown in FIG. 17 and FIG. 18 uses the event flag to judge the operating condition and take a relief measure in case of abnormality. Therefore, the processing of FIG. 19 is almost the same as the processing in the processing flow shown in FIG. However, since the processing task is of a type that temporarily operates, an event flag transmission request is sent to each processing task as in the case of FIG.
There is a difference in that the data is transmitted from (see S7 in FIG. 19).

As for the effect of this embodiment, the same effect as the embodiment shown in FIGS. 12 and 13 can be obtained for the processing task which operates temporarily. 7, 17, and 19
4, the WDT 54 corresponds to the abnormality occurrence monitoring means 2 in FIG. 4, and the counter 60 corresponds to the counter 4 in FIG. The WDT task W corresponds to the abnormality occurrence monitoring task 6 of FIG. 4, and the processing tasks A, B, and C are the processing tasks 8 of FIG.
Corresponds to B. The WDT task W is the sending means 17 of FIG.
18 corresponds to the program for executing the processing of steps S1 and S2 of FIG. 18, and the CPU 50 corresponds to the clearing means 18 of FIG. A program for performing the process of step S4 of FIG.
The CPU 50 corresponds to the processing means 20 of FIG. FIG.
CPU that executes the processing of steps S3 and S4
Reference numeral 50 corresponds to the determination means 22 in FIG. 4, and step S5 in FIG. 19, the CPU 50, and the display correspond to the alarm output means 24 in FIG.

FIG. 20 shows an embodiment of the invention described in claim 1, claim 2, claim 3, claim 13 and claim 14. This embodiment is an embodiment in which the processing task tasks A and C or the processing tasks B and C simultaneously process the processing tasks, and is different from the embodiment shown in FIG. 8 and FIG. 9 or FIG. 8 and FIG. , FIG. 11 and FIG. 12, or FIG. 11 and FIG.
This is an embodiment having the functions and effects obtained in the embodiment shown in FIG.

21 and 22 show an embodiment and a processing flow thereof according to claim 1, claim 3, claim 6, claim 13 and claim 14. This embodiment is an embodiment in the case where the processing tasks A and B operate periodically at the same time, and the processing task C operates temporarily.
1 and FIG. 12, or the embodiment shown in FIG. 11 and FIG.
It is an embodiment having the functions and effects obtained by the embodiment shown in FIGS. 17 and 18 or the embodiment shown in FIGS.

Therefore, in operation, as shown in the processing flow of FIG. 22, in addition to the processing flow shown in FIG.
It differs from the processing flow of FIG. 12 in that an event flag transmission request is sent to the processing task C. Further, mail may be used instead of the event flag. In that case, in addition to the processing flow of FIG. 13, it is necessary to send an event flag transmission request to the processing task C.

FIGS. 23 and 24 show an embodiment of the invention described in claim 1, claim 3, claim 6, claim 9, and claim 14. In this embodiment, the processing task A which operates cyclically as described above, the processing task B whose allowable processing time is longer than the activation cycle of the WDT task W, and the processing task C which operates temporarily are mixed. This is an example of the case where software that provides a line service is configured.

In the operation of this embodiment, as shown in FIGS. 24 and 25, the processing task B is processed in steps S1 to S10. This processing task B
The process regarding is a case where an event flag is used, but mail may be used. After the processing for the processing task B is completed, the processing for the processing tasks A and C is performed in steps S11 to S15. These steps S11 to S15 are
11 and 12 and the processing of the embodiments shown in FIGS. 17 and 18 are combined. The embodiment shown in FIGS. 11 and 12 and FIGS. 17 and 1
It is considered that those skilled in the art can easily understand from the description of the embodiment shown in FIG.

The operational effects are also the same as the operational effects obtained for each processing task.

[0054]

As described above, according to the present invention, the processing tasks operate cyclically sequentially, the processing tasks operate simultaneously, the processing tasks operate temporarily, or the processing tasks operate. If the processing task becomes abnormal regardless of whether it operates for an allowable processing time longer than the activation cycle of the abnormality occurrence monitoring means, or whether two or more processing tasks are mixed, the abnormality occurrence monitoring task is normally activated. Even when operating, the CPU can be reset or an alarm can be generated due to an abnormality in the processing task. Therefore, for example, the influence on the line service can be minimized, and the reliability of the device can be improved.

[Brief description of drawings]

1 is a principle block diagram of the invention according to claims 1 to 4, claim 13 and claim 1;

FIG. 2 is a principle block diagram of the invention according to claims 5, 13 and 14;

FIG. 3 is a principle block diagram of the invention according to claim 6, claim 7, claim 13, and claim 14;

FIG. 4 is a principle block diagram of the invention according to claim 8, claim 13 and claim 14;

FIG. 5 is a principle block diagram of the invention according to claims 9 to 11, claim 13 and claim 14;

FIG. 6 is a principle block diagram of the invention according to claim 12, claim 13 and claim 14;

FIG. 7 is a diagram showing details of an abnormality occurrence monitoring function used in the embodiments of the invention described in claims 1 to 14;

FIG. 8 is a diagram showing an embodiment of the invention described in claim 1, claim 2, claim 4, claim 5, claim 13, and claim 14;

FIG. 9 is a combination of claim 1, claim 2, claim 4, claim 13;
FIG. 16 is a diagram showing a processing flow of an embodiment of the invention as set forth in claim 14;

FIG. 10: Claim 1, Claim 2, Claim 5, Claim 1
It is a figure which shows the process flow of 3rd and one Example of invention of Claim 14.

FIG. 11: Claim 1, Claim 3, Claim 4, Claim 5,
It is a figure which shows one Example of the invention of Claim 13 and Claim 14.

FIG. 12: Claim 1, Claim 3, Claim 4, Claim 1
It is a figure which shows the process flow of 3rd and one Example of invention of Claim 14.

FIG. 13: Claim 1, Claim 3, Claim 5, Claim 1
It is a figure which shows the process flow of 3rd and one Example of invention of Claim 14.

FIG. 14 is a diagram showing an embodiment of the invention described in claims 1 and 9 to 14;

FIG. 15 is a diagram showing a processing flow of an embodiment of the invention described in claims 1, 9 to 11, claim 13 and claim 14;

FIG. 16 is a diagram showing a processing flow of an embodiment of the invention of claims 1 and 9 to 14;

FIG. 17 is a diagram showing the configuration of claims 1, 6 to 8, and FIG.
It is a figure which shows one Example of invention of 4 statement.

FIG. 18 is a diagram showing a processing flow of an embodiment of the invention described in claim 1, claim 6, claim 7, and claim 14;

FIG. 19 is a diagram showing a processing flow of an embodiment of the invention described in claim 1, claim 6, claim 8 and claim 14;

FIG. 20: Claim 1, Claim 2, Claim 3, Claim 1
It is a figure which shows one Example of 3 and the invention of Claim 14.

21] Claim 1, Claim 3, Claim 6, Claim 1
It is a figure which shows one Example of 3 and the invention of Claim 14.

22] Claim 1, Claim 3, Claim 6, Claim 1
It is a figure which shows the processing flow of the Example of 3 and the invention of Claim 14.

FIG. 23 is a combination of claim 1, claim 2, claim 3, claim 6, and
It is a figure which shows one Example of invention of Claim 9 and Claim 14.

FIG. 24 is a combination of claim 1, claim 3, claim 6, claim 9, and FIG.
FIG. 16 is a diagram showing a part of a processing flow of an embodiment of the invention according to claim 14;

FIG. 25: Claim 1, Claim 3, Claim 6, Claim 9,
FIG. 16 is a diagram showing the rest of the processing flow of one embodiment of the invention of claim 14;

FIG. 26 is a diagram showing a conventional transmission device having a software self-diagnosis function.

FIG. 27 is a diagram showing a configuration of a conventional abnormality occurrence monitoring function.

[Explanation of symbols]

 2 abnormality occurrence monitoring means 4 counter 6 abnormality occurrence monitoring task 8 processing task 8A processing task 8B processing task 10 holding means 12 judging means 14 performance judging means 16 alarm output means 17 sending means 18 clearing means 20 processing means 22 judging means 24 alarm output Means 26 First processing means 28 Second processing means 30 Judging means 32 Alarm output means 50 CPU 54 Abnormality occurrence monitoring function 60 Counter 62 register 66 Alarm occurrence reference register

Claims (14)

[Claims] 1. A digital processing device having an abnormality occurrence monitoring task for performing a counter clearing process of the abnormality occurrence monitoring means within a monitoring time, and a holding means for receiving operation status notification information of the processing task, The abnormality occurrence monitoring task is provided with a judging means for judging whether or not the operation status notification information received by the holding means indicates the normality of the processing task, and when the judging means shows the normal judgment, the counter is cleared. However, the digital processing device having a software self-diagnosis function is characterized in that the counter is not cleared when an abnormality judgment is shown. 2. The digital processing device having a software self-diagnosis function according to claim 1, wherein the processing task is a plurality of processing tasks that operate sequentially in a cyclic manner, and has a software self-diagnosis function. Digital processing unit. 3. A digital processing device having a software self-diagnosis function according to claim 1, wherein the processing tasks are a plurality of processing tasks that operate simultaneously at a periodical interval. Processing equipment. 4. The digital processing device having the software self-diagnosis function according to claim 2 or 3, wherein the operation status notification information is an event flag or a mail. A digital processing device having. 5. A digital processing apparatus having a software self-diagnosis function according to claim 4, wherein when the counter is cleared, a performance judging means for judging the performance of a processing task corresponding to the mail from the contents of the mail. A digital processing apparatus having a software self-diagnosis function, wherein an alarm output means capable of outputting an alarm corresponding to the performance judgment is provided in an abnormality occurrence monitoring task. 6. A digital processing apparatus having an abnormality occurrence monitoring task for performing counter clearing processing of an abnormality occurrence monitoring means within a monitoring time, and a processing task, wherein the processing task is a plurality of processing tasks that operate temporarily. Yes, sending means for sending an operation status notification information transmission request from the abnormality occurrence monitoring task to the processing tasks, and clearing means for clearing the counter when the operation status notification information is received from all of the processing tasks. When the operation status notification information is received from only a part of the processing tasks, the abnormality occurrence monitoring task is provided with processing means capable of clearing the counter and / or outputting an alarm for each processing task. Digital processor having software self-diagnosis function. 7. The digital processor having a software self-diagnosis function according to claim 6, wherein the operation status notification information is an event flag or mail. 8. A digital processing device having a software self-diagnosis function according to claim 7, further comprising: a judgment means for judging the performance of a processing task corresponding to the mail from the contents of the mail, and an alarm corresponding to the performance judgment. A digital processing device having a software self-diagnosis function, which is provided with an alarm output means capable of outputting. 9. In a digital processing device having an abnormality occurrence monitoring task and a processing task, wherein a counter clearing process of the abnormality occurrence monitoring means is performed within a monitoring time, the processing task is longer than an activation cycle of the abnormality occurrence monitoring task. It is a plurality of tasks that perform their own processing in a long permissible processing time, and when processing end notification information is received from the corresponding processing task within the permissible processing time from the notification time of the processing start notification information from each processing task A digital processing device having a software self-diagnosis function, wherein a first processing means for performing a clearing process is provided in an abnormality occurrence monitoring task. 10. The digital processing device having the software self-diagnosis function according to claim 9, wherein when the processing time of the processing task exceeds the allowable processing time, a counter clearing process and / or an alarm for each processing task is output. A digital processing apparatus having a software self-diagnosis function, characterized in that the obtained second processing means is provided in an abnormality occurrence monitoring task. 11. A digital processing device having a software self-diagnosis function according to claim 9 or 10, wherein the operation status notification information is an event flag or a mail. A digital processing device having. 12. A digital processing device having a software self-diagnosis function according to claim 11, further comprising: a judging means for judging the performance of a processing task corresponding to the mail from the contents of the mail; and an alarm corresponding to the performance judgment. A digital processing device having a software self-diagnosis function, which is provided with an alarm output means capable of outputting. 13. A digital processing apparatus having a software self-diagnosis function according to any one of claims 2 to 12, wherein the processing tasks are cyclically sequential processing tasks and cyclically simultaneous processing tasks. A software self-diagnosis, which is any two or more of a task, a processing task that operates temporarily, and a processing task that operates with an allowable processing time longer than the activation cycle of the abnormality occurrence monitoring task. A digital processing device having a function. 14. A digital processing device having a software self-diagnosis function according to any one of claims 1 to 13, wherein the digital processing device is a transmission device. apparatus.