JP2531103B2 - Inter-job data communication system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-job data communication system for communicating data between jobs, and more particularly,
The present invention relates to an inter-job data communication system that transfers data from one program to another program via a memory.

[0002]

2. Description of the Related Art As conventional data communication between jobs,
There are a method of transferring data from one program to another program via a memory, a method of transferring data via a file, and a method of transferring data via a communication line.

In inter-job communication for transferring data through a memory, the data transfer speed is high, but the transfer data cannot be recovered after a program failure or system failure. In the inter-job communication via the communication line, the data transfer speed is relatively high, but similarly, the transfer data cannot be recovered after the program failure or the system failure. In the inter-job communication via a file, a transfer data from a program of a transmission source is stored in a file, the transfer data stored in the file is read and sent to a program of a reception destination. In this method, since the transfer data is stored in the file, the transfer data can be recovered even after the program failure or the system failure. Further, in the transfer data recovery process, the transfer data of the entire system is collectively recovered from one file.

[0004]

As described above, in the conventional inter-job communication, in the method of transferring data via the memory and the method of transferring data via the communication line, both of them are executed after a program failure or a system failure. There was a problem that the transfer data could not be recovered. In the method of transferring data via a file that enables recovery of the transferred data, the transferred data from the source program is stored in a file, the transferred data stored in the file is read and sent to the recipient program. However, since it is necessary to access the file twice, there is a drawback that the data transfer speed becomes slow. Further, since all transfer data is stored in one file, the input / output processing of the file is concentrated, which further impairs the speed of data transfer.

Further, in the method of transferring data via a file, in the transfer data recovery process after the occurrence of a failure, the entire system is collectively recovered, so that the load of the file input / output process in the recovery process is concentrated. In addition, there is a problem that the restoration process cannot be performed at high speed, and since originally unnecessary or unnecessary transfer data is also restored, the file cannot be used effectively and system resources are wasted.

The present invention has been made in order to solve such a conventional problem, and it is possible to perform high-speed transfer data communication via a memory and to recover the transfer data between jobs. An object is to provide a communication system. It is another object of the present invention to provide an inter-job data communication system that can realize a high-speed transfer data recovery process, can effectively use files for data recovery, and can reduce waste of system resources.

[0007]

To achieve the above object, the present invention provides an inter-job data communication system for transferring transfer data from a program to another program through a memory, wherein the transfer on the memory is performed. A file storage management unit that sets a file for storing data, a file storage processing unit that stores the transfer data in the file, and instruction data for storing the transfer data in the file for each program. Information, and the file storage processing unit includes a file storage selection processing unit that selects the transfer data based on the instruction data of the file storage management information.

Another aspect of the present invention is an inter-job data communication system for transferring transfer data from one program to another program via a memory, and a file storing the transfer data on the memory and the transfer. A file storage processing unit for storing data in the file, and instruction data for storing the transfer data in the file and storing the transfer data in the memory in the file prior to transfer, or File storage management information in which instruction data for instructing whether to store after transfer is set for each program, and the file storage processing unit selects file transfer selection processing for selecting the transfer data based on the file storage management information. And the transfer data in the memory based on the file storage management information. It has a configuration which comprises a storage synchronization selection processing unit for selecting whether to store or after or transferred and stored in the file Te. In a preferred aspect, the file storage processing unit stores a synchronous storage processing unit that stores the transfer data in the file prior to transfer based on a selection by the storage synchronization selection processing unit, and stores the transfer data in the file after transfer. An asynchronous storage processing unit for storing is provided.

According to still another aspect of the present invention, in an inter-job data communication system for transferring transfer data from one program to another program through a memory, the programs are mutually grouped into a plurality of groups for each program. A plurality of files which are provided for each group and which store transfer data of programs belonging to the group, a file storage processing unit which stores the transfer data in the file, and the transfer data. File storage management information in which data indicating whether to store in the file, correspondence between the group and the file, and data indicating the program belonging to the group is set, and the file storage processing unit is configured to store the file. A file that selects the transfer data based on the stored information. And storing selection processing section, on the basis of the file storage information is configured to include a group-specific file storage processing unit for storing the transfer data of the said select a file program corresponding to the group to which the program belongs. In a preferred aspect, the file storage management information further sets, for each of the programs, instruction data for instructing whether transfer data on the memory is stored in the file before transfer or after transfer. The storage processing unit stores the transfer data in the memory in the file prior to transfer based on the file storage management information and the file storage selection processing unit that selects the transfer data based on the file storage management information. Or a storage synchronization selection processing unit for selecting whether to store the data after transfer.

More preferably, a group-by-group restoration process for restoring the transfer data stored in the file from the file to the memory for each group based on the file storage management information is provided.

[0011]

According to the present invention, whether or not transfer data is stored in a file is set in the file storage management information, and the file storage management information is referred to by the file storage selection processing unit, whereby a data communication system using only a memory is provided. , It becomes possible to communicate by selecting the data communication method via the memory and the file. Therefore, for transfer data that does not need to be restored after the occurrence of a failure, high-speed data transfer is possible if communication is performed only through the memory.
Also, in the case of communication via a memory and a file, the transfer data is stored in the memory and the file when the transfer source program sends it, and when the transfer destination program receives it, the transfer data is taken out only from the memory. The file is accessed less frequently.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an inter-job data communication system to which the present invention is applied.
Referring to FIG. 1, in the inter-job data communication system according to the present embodiment, the programs a, b, c, and d that perform data communication between jobs are grouped for each program that performs data communication with each other. It is set that b belongs to group A and programs c and d belong to group B. The inter-job data communication unit 10 stores communication of transfer data between the programs via the memory 20 and stores the transfer data in the file 17.

The inter-job data communication unit 10 then transfers the transfer data of the program to a file 17 when the communication processing unit 14 performs a communication process for transferring the transfer data of the program to another program. A file storage processing unit 15 for storing, a recovery processing unit 16 for recovering transfer data from the file 17 after a program failure or a system failure, and file storage management information 24 for managing storage of transfer data in the file 17 are provided. .

The file 17 for storing the transfer data has a file 17A and a file 17B.
7A and 17B are assigned to the groups A and B of the program, and the transfer data of the programs a and b belonging to the group A are stored in the file 17A.
In B, transfer data of programs c and d belonging to group B are stored.

The file storage processing unit 15 includes a file storage selection processing unit 151 and a file storage synchronization selection processing unit 15.
2, a synchronous file storage processing unit 153, an asynchronous file storage processing unit 154, and a group-specific file storage processing unit 155.

The file storage selection processing section 151 selects transfer data to be stored in the file 17 based on the file storage management information 24. The file storage synchronization selection processing unit 152, when communicating with the memory 20 via the file 17, adopts a synchronous storage method of storing the transfer data on the memory 20 in the file 17 prior to the transfer, or on the memory 20. File 1 after transferring the transfer data
7 is selected based on the file storage management information 24.

The synchronous file storage processing unit 153 is activated when the system selected by the file storage synchronization selection processing unit 152 is the synchronous storage system, and stores the transfer data on the memory 20 in the file 17 and then transfers it. Transfer to the previous program. In addition, the asynchronous file storage processing unit 154 uses the file storage synchronization selection processing unit 15 described above.
It is activated when the method selected in 2 is the asynchronous storage method, and the transfer data in the memory 20 is transferred to the transfer destination program and then stored in the file 17.

The group-specific file storage processing unit 155
When the synchronous file storage processing unit 153 or the asynchronous file storage processing unit 154 stores the file 17 in the file 17, the transfer data is transferred to the files A and B corresponding to the program groups A and B based on the file storage management information 24. Store in B.

The recovery processing unit 16 restores the transfer data stored in the file 17 to the memory 20 when a program failure or a system failure occurs. This restoration processing unit 16 uses the plurality of files (file 17
A, 17B) is provided with a group-specific recovery processing unit 160 capable of selectively recovering the transfer data of each group.

As shown in the figure, the file storage management information 24 includes storage availability data 24A for instructing whether transfer data is stored in the file 17 and transfer data for the file 1
Data 24B for instructing whether to use the synchronous storage method or the asynchronous storage method when transferring the data to the storage medium 7 and data 24C showing the correspondence between the program group and the file. In the storability data 24A, whether or not to store in the file 17 is designated for each program (a, b, c, d) that transfers the data.
In the data 24B, a synchronous type or an asynchronous type is designated for each program (a, b, c, d) that similarly transfers the data. Further, the data 24C specifies the correspondence between each group and the file.

The file storage management information 24 is stored in the file 17. When a plurality of files are provided for each group of programs, the file storage management information 24 having the same content is stored in each file.

Next, an operation example of the inter-job data communication system of the present embodiment configured as described above will be described with reference to FIG. In FIG. 2, the file storage management information 24 having the contents shown in the drawing is the file 17A and the file 17B.
It is stored in. When data is transferred from the program a of the group A to the program b via the memory 20,
File storage selection processing unit 15 of file storage processing unit 15
1 reads the file storage management information 24 from the file 17A and refers to the storage availability data 24A.

Here, in the storage availability data 24A of the file storage management information 24, the file storage of the transfer data of the programs a and b is N (NO: not stored), so the file storage selection processing unit 151 The transfer data from the program a is not selected. As a result, the transfer data from the program a on the memory 20 is transferred to the program b without being stored in the file 17A.

Further, in FIG. 2, when data is transferred from the program c of the group B to the program d via the memory 20, the file storage selection processing unit 151 of the file storage processing unit 15 transfers the file storage management information 24 to the file 17B. Read out from the storage device and refer to the storage availability data 24A. Here, in the storability data 24A of the file storage management information 24, the file storage of the transfer data of the programs c and d is Y (YES: store). The transfer data on the memory 20 is selected as the data to be stored in the file.

Next, the file storage synchronization selection processing unit 152
Is started and the data 24 of the file storage management information 24
Reference is made to B. Here, since the programs c and d of the data 24B are stored asynchronously, the file storage synchronization selection processing unit 152 uses the asynchronous file storage processing unit 15
Start 4. The asynchronous file storage processing unit 154
The transfer data on the memory 20 is first transferred to the program d, and after the transfer is completed, the transfer data is stored in the file 17. At that time, the group-specific file storage processing unit 1
By referring to the file storage management information 24 by 55, it is recognized that the programs c and d belong to the group B and the file storing the transfer data of the programs belonging to the group B is the file 17B. As a result, the transfer data from the program c on the memory 20 is stored in the file 17B by the asynchronous storage method.

As described above, the file storage management information 24
Whether to store the transfer data in a file is set to the file storage selection processing unit 151 and the file storage management information 2 is set.
With reference to FIG. 4, it is possible to select a data communication method via only the memory 20 or a data communication method via the memory 20 and the file 17 for communication. Therefore, for transfer data that does not need to be recovered after the occurrence of a failure, high-speed data transfer is possible if communication is performed only through the memory 20. In addition, the memory 20
In the case of communication via the file 17 and the file 17, the transfer data is stored in the memory 20 and the file 17 at the time of transmission from the transfer source program, and the transfer data is taken out only from the memory 20 when being received by the transfer destination program. , The number of times of access to the file 17 is once (half that in the conventional method), and the data communication can be performed at a higher speed than in the case of the conventional data communication using the file. Then, it becomes possible to recover data after a failure occurs.

Another operation example of the inter-job data communication system of this embodiment will be described with reference to FIG. In FIG. 3, the file storage management information 24 having the illustrated contents is stored in the files 17A and 17B.

Further, in FIG. 3, when data is transferred from the program a of group A to the program b via the memory 20, the file storage selection processing unit 151 of the file storage processing unit 15 transfers the file storage management information 24 to the file 17A. Read out from the storage device and refer to the storage availability data 24A. Here, in the storability data 24A of the file storage management information 24, the file storage of the transfer data of the programs a and b is Y (YES: store). The transmitted transfer data on the memory 20 is selected as the data to be stored in the file.

Next, the file storage synchronization selection processing unit 152
Is started and the data 24 of the file storage management information 24
Reference is made to B. Here, since the programs a and b of the data 24B are in the synchronous storage system, the file storage synchronization selection processing unit 152 uses the synchronous file storage processing unit 15
Start 3. The synchronous file storage processing unit 153 stores the transfer data on the memory 20 in the file 17 first,
After the storage is completed, it is transferred to the program b. By referring to the file storage management information 24 by the group-specific file storage processing unit 155 when storing in the file 17,
Programs a and b belong to group A, and group A
It is recognized that the file storing the transfer data of the program belonging to the file is the file 17A. As a result, the transfer data from the program a on the memory 20 is stored in the file 17A by the synchronous storage method. Memory 20 from program c to program d of group B in FIG.
2 shows the operation when data is transferred via
Is the same as in. In this case, the transfer data from the program c is stored in the file 17B by the asynchronous storage method.
Stored in.

As described above, when importance is attached to the high-speed transfer of the transfer data, the high-speed transfer can be realized and the transfer data can be restored by selecting the asynchronous storage method. However, in the asynchronous storage method, if a program failure or the like occurs at the time when the storage of the transfer data in the file 17 is not completed, the transfer data after the completion of the transmission cannot be recovered. When it is desired to completely restore the transfer data that has been transmitted after a failure, the transfer data may be stored in the file 17 by the synchronous storage method. Further, as described above, the files (files 17A and 17B) corresponding to each group to which the program that transmits the transfer data belongs
By storing transfer data in separate files for each group, the load of file input / output processing is distributed. Therefore, it is possible to avoid the problem that the high-speed transfer of data is impaired by the concentration of the input / output processing to the file as in the conventional case.

Referring to FIGS. 4 and 5, the transfer data is transferred to the file 17 due to a program failure or system failure.
The operation when recovering from is explained. When restoring the transfer data, the restoration processing unit 16 is started as one job (step 501). The restoration processing unit 16 restores the file storage management information 24 from the file 17A or 17B in advance and reads it. Group recovery processing unit 160
Refers to the file storage management information 24 (step 50
2) If the transfer data of the program belonging to the group A is recovered (step 503), the transfer data stored in the file 17A is recovered in the memory 20 (step 504). Then, if the transfer data of the program belonging to the group B is recovered (step 505), the transfer data stored in the file 17B is recovered in the memory 20 (step 506).

For example, if a failure occurs and the transfer data is restored as described above after the data transfer shown in FIG. 3, the transfer data to the program b is group A data as shown in FIG. 20A is restored on the memory 20, and the data transferred to the program d is restored on the memory 20 as the data 20B of the group B.

As described above, by performing the restoration process for each file corresponding to each group, the load of the input / output process is distributed to the files, and the restoration process can be performed at high speed. Further, since files are provided for each group and the recovery processing unit 16 is started as one job, if it is determined that recovery of transfer data of group B is unnecessary, for example, recovery of transfer data of group A is instructed. By doing so, the restoration of the transfer data of the group B can be excluded.
Therefore, it is possible to reduce waste of system resources as compared with the case where the transfer data of the entire file is collectively recovered.
Although the present invention has been described with reference to the preferred embodiments, the present invention is not necessarily limited to the above embodiments.

[0034]

As described above, according to the inter-job data communication system according to the present invention, by referring to the file storage management information in the file storage selection processing unit, the data communication system through only the memory, the memory and the file Since it is possible to perform communication by selecting the data communication method via, it is possible to perform high-speed transfer of transfer data that does not need to be recovered after a failure occurs, by performing communication only via the memory. Also, in the case of communication via a memory and a file, the transfer data is stored in the memory and the file when the transfer source program sends it, and when the transfer destination program receives it, the transfer data is taken out only from the memory. The number of times of access to the file is once (half that in the conventional method), which enables higher-speed data communication than that in the conventional data communication through the file.

Further, when importance is attached to the high-speed transfer of the transfer data, the high-speed transfer can be realized and the transfer data can be restored by selecting the asynchronous storage method. Then, when it is desired to completely restore the transfer data that has been transmitted after a failure, the transfer data may be stored in a file by the synchronous storage method. Further, by providing a file corresponding to each group to which the program transmitting the transfer data belongs and storing the transfer data in separate files for each group, the load of the file input / output processing is dispersed. As a result, it is possible to avoid the problem that the high-speed transfer of data is impaired by the concentration of the input / output processing to the file as in the conventional case.

By performing the restoration process for each file corresponding to each group, the load of the input / output process is distributed to the files, and the restoration process can be performed at high speed. In addition, files are provided for each group. For example, if it is determined that the transfer data of a certain group does not need to be recovered, recovery of the transfer data of that group can be excluded, and the transfer data of the entire file can be collectively recovered. It is possible to reduce waste of system resources as compared with

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an inter-job data communication system to which the present invention is applied.

FIG. 2 is a block diagram illustrating an operation example of an inter-job data communication system according to an exemplary embodiment of the present invention.

FIG. 3 is a block diagram illustrating an operation example of an inter-job data communication system according to an exemplary embodiment of the present invention.

FIG. 4 is a block diagram illustrating an operation when recovering transfer data from a file in an inter-job data communication system according to an exemplary embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation when restoring transfer data of a job-to-job data communication system from a file.

[Explanation of symbols]

 10 inter-job data communication unit 14 communication processing unit 15 file storage processing unit 16 recovery processing unit 17 file 17A, 17B file 20 memory 24 file storage management information 151 file storage selection processing unit 152 file storage synchronization selection processing unit 153 synchronous file storage Processing unit 154 Asynchronous file storage processing unit 155 File storage processing unit for each group 160 Recovery processing unit for each group a, b, c, d Program A, B group

Claims (7)

(57) [Claims] 1. An inter-job data communication system for transferring transfer data from one program to another program through a memory, comprising: a file storing the transfer data on the memory; and a file storing the transfer data to the file. A file storage processing unit that performs a storage process; and file storage management information that sets, for each program, instruction data indicating whether or not to store the transfer data in the file. An inter-job data communication system, comprising: a file storage selection processing unit that selects the transfer data based on instruction data of management information. 2. In an inter-job data communication system for transferring transfer data from one program to another program through a memory, a file storing the transfer data on the memory, and a file for storing the transfer data to the file. A file storage processing unit that performs a storage process, and whether to store the transfer data in the file and the instruction data as to whether or not to store the transfer data in the file, before or after the transfer. File storage management information in which instruction data to be instructed is set for each program, the file storage processing unit selects a transfer data based on the file storage management information, and the file storage Based on the management information, the transfer data on the memory is transferred to the storage device before the transfer. Inter-job data communication system, characterized in that it comprises a storage synchronization selection processing unit for selecting whether to store or after or transferred and stored in yl. 3. The file storage processing unit stores the transfer data in the file prior to the transfer based on the selection by the storage synchronization selection processing unit, and the file after the transfer data is transferred. The inter-job data communication system according to claim 2, further comprising: an asynchronous storage processing unit that stores the data in the job. 4. An inter-job data communication system for transferring transfer data from a certain program to another program through a memory, wherein the programs are grouped into a plurality of groups for each program for mutual data communication, A plurality of files provided for each group for storing transfer data of programs belonging to the group, a file storage processing unit for storing the transfer data in the file, and storing the transfer data in the file File storage management information in which data indicating the program that belongs to the group and the correspondence relationship between the group and the file, and the instruction data of whether or not is set, the file storage processing unit, based on the file storage information File storage selection process for selecting the transfer data And a group-specific file storage processing unit that stores the transfer data of the program by selecting the file corresponding to the group to which the program belongs based on the file storage information. system. 5. The file storage management information further sets, for each of the programs, instruction data for instructing whether transfer data on the memory is stored in the file before transfer or after transfer. And a file storage processing unit that selects the transfer data based on the file storage management information, and stores the transfer data on the memory in the file based on the file storage management information before the transfer. 5. The inter-job data communication system according to claim 4, further comprising a storage synchronization selection processing unit that selects whether to perform or store after transfer. 6. The file storage processing unit stores the transfer data in the file prior to the transfer based on the selection by the storage synchronization selection processing unit, and the file after the transfer data is transferred. The inter-job data communication system according to claim 2, further comprising: an asynchronous storage processing unit that stores the data in the job. 7. The group-based restoration processing for restoring the transfer data stored in the file from the file to the memory for each group based on the file storage management information. The job-to-job data communication system according to item 6.