JPH0561697A - Fault restoring processor - Google Patents

Abstract

PURPOSE:To automatically execute proper processing for a fault independently of the skillfullness of a terminal fault processing operator. CONSTITUTION:In a multiple processing execution status table 2 residentially stored in a buffer memory 1, flags respectively corresponding to user program execution start, normal end and abnormal end in the primary to n-th order processing are updated. A continuous execution program 3 has a function for setting up time that a user requires automatic restoration and the time is always checked by a system timer 5. When the set time arrives, the program 3 refers the table 2. When an abnormal end flag is detected in the table 2, the program 3 judges abnormal end information and starts up a recovery program 4 to executes automatic restoration. After completing the program 4, the abnormal end flag in the table 2 is rewritten to normal end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically recovering from a failure in terminal multiprocessing.

[0002]

2. Description of the Related Art Conventionally, even if multiple processes are simultaneously executed,
We are artificially investigating obstacles other than the next processing. In addition, a skilled expert was required to investigate where the processing other than the primary processing was interrupted and to recover from failures such as power interruptions and power failures.

[0003]

Even if multiple processes are simultaneously executed in the terminal, only the primary process fault recognition can be performed on the screen, and the secondary process and subsequent fault recognition must be done manually. For this reason, faults other than the primary process are not displayed on the screen of the terminal. Therefore, when a fault occurs, an expert must manually investigate the fault process, and the fault must be recovered depending on the skill level of the responder. It had the drawback of varying degrees.

[0004]

According to the present invention, "a multi-processing execution status table in a buffer memory is compared with a user program execution start, normal end, or abnormal end in the first to nth processings. Sometimes the corresponding flag is updated, the multiple execution status table is monitored by the continuous execution program,
A failure recovery processing device characterized by automatically recovering when an abnormality is found is obtained.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a more detailed description will be given with reference to the drawings showing an embodiment of the present invention.

Referring to FIG. 1, in one embodiment of the present invention, the multi-process execution status table 2 resident in the buffer memory 1 has a normal end at the start of execution of a user program in the first to nth processes. At the time of abnormal termination, the corresponding flag is updated. Further, the continuous execution program 3 has a function of setting a time that the user wants to automatically restore, and the system timer 5 always confirms the time. When the set time comes, the continuous execution program 3 refers to the multi-processing execution status table 2. When the abnormal termination flag is detected on the table, the continuous execution program determines the abnormal termination information, the recovery program 4 is activated, and automatic recovery is performed. Next, recovery program 4
When is completed, the abnormal end flag of the multi-processing execution status table 2 is rewritten to normal end.

[0007]

As described above, according to the present invention,
Even if a failure occurs in multiple terminal processing, automatic recovery is performed by the terminal itself so that appropriate processing can be automatically performed for the failure regardless of the skill level of the person responding to the terminal failure. it can.

[Brief description of drawings]

FIG. 1 is a functional block diagram of an embodiment of the present invention.

[Explanation of symbols]

1 Buffer Memory 2 Multiple Processing Execution Status Table 3 Continuous Execution Program 4 Recovery Program 5 System Timer 61, 62 ... 6n User Program in 1st to nth Processing

Claims (1)

[Claims] 1. A multi-processing execution status table in a buffer memory is updated with flags corresponding to the user program execution start, normal end, and abnormal end in the first to nth processing, and continuous execution is performed. A failure recovery processing device characterized by monitoring a multiple execution status table by a program and automatically recovering when an abnormality is detected.