JPS63201741A - Dump information editing and outputting system - Google Patents

Abstract

PURPOSE:To efficiently execute a fault analysis by storing in advance history information of a descriptor, etc., indicating a data area used by a system in a history information store means, and selecting and outputting only a part indicated by the history information in dump information in case of ending system abnormality. CONSTITUTION:In a history information store means 2, history information indicating a data area used by a computer system while its operation is written by a history information write means 1, therefore, the data area which is used at the time point of an abnormality end of the system can be known based on the history information stored in the history information store means 2. Also, in order to execute a fault analysis, if there is information of the data area which is usually used at the time point of an abnormal end, the information is necessary and sufficient. Accordingly, by a dump information editing and outputting means 4, only information indicated by the history information in dump information at the time point of the abnormal end is outputted. In such a way, the dump information being necessary and sufficient for the fault analysis can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dump information editing and output method for editing and outputting dump information when a computer system such as an online processing system terminates abnormally.

[Conventional technology]

Conventionally, in computer systems such as online processing systems, when the system terminates abnormally, all information stored in all data areas involved in system execution is unconditionally output as dump information. There is.

[Problem that the invention seeks to solve]

Conventionally, as mentioned above, the information stored in all data areas involved in system execution was output as dump information, which resulted in a huge amount of information, and the line printer paper was used up when printing. There was a problem that it was used in large quantities and the output time became long. Moreover, furthermore,
Since a portion of the output dump information is often used for failure analysis such as bug analysis, there is also the problem that efficient cause analysis cannot be performed.

The present invention solves the above-mentioned problems, and its purpose is to make it possible to output only the data necessary for failure analysis as dump information.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a dump information editing and outputting method when a computer system terminates abnormally, which includes history information in which history information indicating the data area used during the operation of the computer system is written. storage means; history information writing means for writing history information into the history information storage means; history information reading means for reading history information stored in the history information storage means after abnormal termination of the computer system; and a point in time of abnormal termination. and dump information editing/output means for outputting only information corresponding to the data area indicated by the history information read by the history information reading means in the dump information.

[For production]

In the history information storage means, the history information writing means writes,
Since history information indicating the data area used while the computer system was in operation is written, the data area that was being used at the time of abnormal termination of the system can be known based on the history information stored in the history information storage means. be able to. Further, in order to perform failure analysis, it is usually necessary and sufficient to have information on the data area that was being used at the time of abnormal termination. Therefore, by outputting only the information indicated by the history information in the dump information at the time of abnormal termination by the dump information editing/output means, it is possible to obtain only the dump information necessary and sufficient for failure analysis.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, which includes a history information writing means 1, a history information storage means 2, a history information reading means 3, a dump information editing and outputting means 4, and an output device such as a line printer. 5, and a storage device 6, such as a main storage device, which is located in each part of the computer and holds data to be dumped.

FIG. 2 is a diagram showing an example of program steps such as an online processing program running on a computer system, and includes steps 2-1 to 2-n for writing history information written by macro instructions, etc. There is. Steps 2-1 to 2-n for performing history information writing processing can be provided at any location in the program, but for example, steps 2-1 to 2-n are provided at a location where the data area to be used is to be changed. In the example shown, step 2-1.
2-2.2- and n are provided at locations where the data area to be used is changed to data area A, data area B, and data area C, respectively.

When operating the computer system, these steps 2-1~
By executing 2-n, the history information writing means 1 writes into the history information storage means 2 a description □ indicating the data area being used at that point in the storage device 6. Incidentally, when writing a descriptor to the history information storage means 2, the history information writing means 1 writes the descriptor after erasing the descriptor written during the previous history information writing process. Therefore, when the computer system terminates abnormally, the descriptor stored in the history information storage means 2 by the history information writing process immediately before the abnormal termination will point to the data area that was being used at the time of the abnormal termination. For example, step 2-1 and step 2
-2, if the process terminates abnormally, the descriptor written in step 2-1 will indicate the data area that was being used at the time of the abnormal termination.

FIG. 3 is a diagram showing the contents of the history information storage means 2,
The descriptor stored in the history information storage means 2 by the history information writing means 1 is composed of a descriptor base and a descriptor value. The descriptor base is set with information (for example, consisting of the start address of the data area and its size) that indicates the data area currently being used by an online processing program or the like running on the computer system in the storage device 6. The descriptor value represents the contents of the register. In the example shown in Figure 3, there are three registers in which information pointing to the currently used data area is set, and the register names are abc ptr, def
ptr, ghi ptr, and the contents of the three registers are 123xxx, 456xxx
, 789xxx.

FIG. 4 is a diagram showing the contents of processing after abnormal termination of a computer system such as an online processing system.

After the system terminates abnormally, the history information reading means 3, which is given control by the operating system, reads all the descriptors stored in the history information storage means 2, and passes the read descriptors to the dump information editing and outputting means 4 ( Step 3-1).

The dump information editing output means 4 first selects one of the descriptors delivered from the history information reading means 3 (step 3-2), and then selects the descriptor value of the descriptor selected in step 3-2. It is determined whether the descriptor value is valid or not, for example, by whether the descriptor value is positive or negative (step 3-3
). If it is determined in step 3-3 that the descriptor value is abnormal, the process proceeds to step 3-7, and if it is determined that the descriptor value is normal, the process proceeds to step 3-4. Here, it is determined whether the descriptor value is valid or not, and if it is determined that it is not valid, such as a negative value, steps 3-4 to 3-4
The reason for not performing the process in step 6 is that accessing data based on an invalid descriptor value itself may have been the cause of the abnormal termination. This is because if processes 4 to 3-6 are performed, there is a risk that the process will end abnormally again.

In step 3-4, the part pointed to by the descriptor value of the descriptor selected in step 3-2 is extracted from the information of each part of the computer at the time of abnormal termination of the computer system as part of the dump information. In step 3-5, additional information (for output) is added to the information extracted in step 3-4.
For example, processing is performed to add information (for example, storage location information) to the information, and in step 3-6, processing is performed to output the information to which the additional information has been added to the output device 5.
Edited dump information is output. Then, when the process of step 3-6 is completed, it is determined whether the above-described process has been performed for the description sent from the history information reading means 3. In step 3-7>, the process described above for all the descriptors is performed. If it is determined that the
When the process is completed and it is determined that the process has not been performed, the process of step 3-2 is performed again.

In the above-mentioned embodiment, a step for writing history information is provided at various locations in the program program, and by executing the above step, a description pointing to the data area that was being used at that time is written. Although the child is stored in the history information storage means 2, if the program detects a logical error and aborts itself, a descriptor pointing to the data area that was being used at that time is stored in the history information storage means 2. It is also possible to perform processing to

〔Effect of the invention〕

As explained above, the present invention stores history information such as descriptors pointing to data areas used by the system in a history information storage means while a computer system such as an online processing system is in operation, and when the system terminates abnormally. If you do,
Since only the portion of the dump information indicated by the history information is selectively output, the following effects are achieved.

■ Sufficient dump information for failure analysis can be obtained, and redundancy is reduced, making it possible to perform failure analysis efficiently.

(2) Since the amount of dump information to be output is reduced, it is possible to eliminate waste of line printer paper, etc. when printing out, for example.

■ Since the amount of dump information to be output is reduced, the time required to output dump information can be reduced.

[Brief explanation of the drawing]

1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram for explaining the processing contents of the history information writing means 1, FIG. 3 is a diagram showing the contents of the history information storage means 2, and The figure is a diagram showing the contents of processing after the system terminates abnormally. In the figure, 1... history information writing means, 2...
History information storage means, 3...History information reading means, 4
... Dump information editing output means, 5... Output device, 6
···Storage device.

Claims (1)

[Scope of Claims] A dump information editing and output method when a computer system terminates abnormally includes: a history information storage means into which history information indicating a data area used during operation of the computer system is written; and the history information. History information writing means for writing history information into a storage means; History information reading means for reading history information stored in the history information storage means after abnormal termination of the computer system; A dump information editing/outputting method comprising: dump information editing/outputting means for outputting only information corresponding to a data area indicated by the history information read by the history information reading means.