KR100387077B1 - Method for correcting function of system on online state - Google Patents

Abstract

PURPOSE: A method for correcting a function of a system on an online state is provided to add a new function, modify a corrected part, and delete an error part while not occurring or minimizing a system failure on the online state, and change/operate a memory without replacing a package during system operation. CONSTITUTION: An MCR(Memory Correction Recovery) extractor(21) extracts the MCR information by extracting a corrected address and the corrected particulars from a current source program and the corrected source program. An MCR editor(22) receives a memory correction request signal from the MCR extractor and performs an editing function. An MCR loader(23) corrects the memory by using the MCR input output from the MCR editor. The MCR loader checks a memory state, recognizes/starts a correction program, confirms the correction, and performs recording/backup of the correction particulars.

Description

How to correct the system's functionality while online

The present invention relates to a method for correcting a function of a system, and more particularly to a method for adding, changing and deleting a new function in an online state.

In general, when correcting a function of a system, correcting a memory temporarily corrects the information of the memory by loading a text by rebooting and a method of temporarily correcting without storing information of a corresponding function. There is a way to. In this case, the former method is a modification method using a memory modify command, which can be modified online. The latter method is a method of loading by rebooting to store the modified contents in the hard disk and to load the information stored in the hard disk in the offline state.

However, as described above, the former method is temporarily unable to store the information of the function to be corrected. The latter method stores the information of the function to be corrected on the hard disk once and is offline. As a method of loading a memory into a memory, it is impossible to correct information of the memory in a real-time online state.

Accordingly, an object of the present invention is to provide a method for adding, modifying, and deleting new functions in an online state when correcting a function of a system.

In order to achieve the objects of the present invention, a method of correcting a function of a system by a host computer in an on-line state includes analyzing a user primitive parameter that is input, and a block name and a corrected date at the time of memory correction. After checking the memory information, the operation type of the parameter is checked. When the additional function is operated in the inspection process, the patch contents are loaded into the patch region, the jump instruction is written to the patch region in the memory region, and the corresponding code is analyzed by analyzing the contents of the damaged memory region. Write after the contents. When jumping from the patch area to the memory area, the jump instruction is recorded by calculating the new address. When the delete function is operated in the inspection process, the area to be deleted is compared with the size of the jump instruction. When the area to be deleted is small, the information is processed as in the addition process to prevent damage to test data. When the area to be large is large, the instruction for jumping to the next address of the address to be deleted is recorded. In the inspection process, the operation date and time of the change function are compared with the size of the jump area and the change command. If the change area is small, the information is processed as in the deletion process, and if the change area is large, the information is processed as the additional process. do. In the parameter analysis process, a block name, a memory address, and a size are input at the time of memory recovery, and when a recovery signal is input, a block table is searched to restore previous contents to the memory area, and a patch area is cleared. do.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same parts in the figures represent the same reference signs wherever possible.

1 is a diagram for explaining an operation of processing a function correction of a system in an online state according to the present invention. Here, reference numeral 10 is a host computer, and reference numeral 20 is a target system. The MCR extractor 11 of the host computer 10 is a tool for extracting MCR information from the host. The extractor 11 extracts a correction address and correction details from an existing source program and a corrected source program in a host environment in order to implement a correction of a memory. The editor (MCR-Editor) 21 receives the memory correction request signal of the extractor 11, removes the inconvenience of input for each line using a man-machine communication (MMC), provides convenience to the operator, and performs an editing function. do. The editing unit 21 has an editing function for convenience of registration of the MCR in the target system, and manages and maintains information. The correction unit (MCR-Loader) 22 corrects the memory by using the MCR input output from the editing unit 21 as information. The correction unit 22 performs functions such as checking the state of a memory, recognizing a corrected program, starting an operation of a corrected program, correcting a confirmation, recording a correction history, and backing up a correction history.

The present invention allocates a 200-byte area as a patch area per block among the free spaces of the RMOS and the user program area, and links them together at the time of linking for memory correction. Use it as an area. A memory correction request is input only by the current MMC, and the extraction unit 11 inputs a program to be corrected and a corrected program to extract information necessary for memory correction. The data and information about the number of times the memory correction for the corresponding block is extracted from the history table of the OMP and output to the RMOS. The RMOS inputs information necessary for memory correction to execute memory correction and memory correction recovery for the corresponding block. Therefore, it is easy to add, modify, and delete memory in the online state, and the memory history table is managed by a specific processor of the target system 20 to store and recover.

In the present invention, it is assumed that the target system 20 is an exchange system, and that a specific processor is OMP, which is a maintenance processor.

As described above, all information related to memory correction is managed by OMP, and signals to the processor of the block to be corrected, at which time information about memory correction or recovery, start address, and end address are received. , Patch content, size, and so on. The RMOS initializes a memory correction, and when an upper signal is received, the RMOS may receive a PPSDH block to correct and recover the block through a user primitive (local-sec).

In this way, OMP manages memory correction information and RMOS provides user primitives, allowing memory correction in real-time online state, and storing and recovering because OMP manages memory correction information.

In the present invention, the RMOS user primitive inputs a parameter to analyze memory correction or recovery, and performs a memory correction routine or a memory recovery routine as follows according to the analysis result.

First, look at the operation of the memory correction routine, declaring a variable (block name) and overwrite information (variable), and compares the block name and the input name in the history table, and also the remaining size of the new area Check it. At this time, if there is no error, the message is moved and stored in the history table, and service routines of append, delete and change are performed according to the operation type of the parameter.

When the operation type is an additional function, the difference between the jump instruction size and the written memory is declared as garbage, and as a new memory address when jumping from the patch area to the memory area. Thereafter, the patch contents are loaded into the patch region, the contents of the memory region to be damaged by the jump instruction are analyzed, and the corresponding code is written after the patch contents of the patch region so that there is no loss of code. The address at the time of jumping to the area is calculated and written to the new address. After that, a jump command is recorded in the patch area in the memory, and a jump command from the patch area to the memory area is recorded.

If the operation type is a delete function, the variable for calculating a new address of garbage and memory is declared. At this time, if the size to be deleted is smaller than the jump instruction size, text data other than the motion data is damaged. To prevent this, the above algorithm is used. If the area to be deleted is larger than the jump instruction size, the instruction to jump to the next address of the address to be deleted is recorded. Finally, a new address and jump instruction are written to memory.

If the type of the operation is a change function, the initial declaration is made in the above manner. If the size of the jump instruction is longer than the memory length to be written, the same routine as the erase routine is performed. If the size of the memory to be changed is large, the change operation is performed in the same process as that of the additional function.

Secondly, the memory correction recovery operation has a block name, a memory address and a memory size, and when a recovery signal is input, the block name is changed to an ID to facilitate calculation on the RMOS, and then the following calculation is performed. It records the block name, memory start position and size in the history table, finds the block table, restores the previous contents of the memory in the memory area, and erases the contents of the patch area as much as used or writes the NOP instruction.

As described above, when correcting the function of the system, there is no function failure or minimizes the function failure in the real-time online state, and it is possible to add a new function, change a modified part, and delete an error occurrence part. The advantage is that you can operate by changing the memory without replacing the package.

1 is a view for explaining the operation of adding, changing and deleting the function of the system in the online state according to the present invention.

Claims (1)

In the method of correcting the function of the system by the host computer in the online state, Analyzing the input user primitive parameters, Checking an operation type of the parameter after checking a block name and memory information to be corrected at the time of memory correction in the parameter analysis process; During the operation of the additional function in the inspection process, after loading the patch contents into the patch region, the instruction to record the instruction to jump to the patch region in the memory region and analyze the contents of the memory region to be damaged accordingly, and corresponding code of the patch region is analyzed. Recording after the patch contents and calculating the new address when jumping from the patch area to the memory area and recording the jump instruction; When the delete function is operated in the checking process, the area to be deleted is compared with the size of the jump instruction. When the area to be deleted is small, the test data is processed as in the addition process to prevent damage to the test data. Recording an instruction to jump to the next address of the address to be deleted when the area to be large is large; When the change function is operated in the checking process, the size of the change area and the jump instruction are compared. If the change area is small, the information is processed as in the deleting process. Process, Inputting a block name, a memory address and a size at the time of memory recovery in the parameter analysis process, searching the block table to restore the previous contents in the memory area, and clearing the patch area when the recovery signal is input. How to correct the function of the system in the online state.