JPH02197947A - File transfer system - Google Patents

Abstract

PURPOSE:To quickly process a file transfer request to be accepted next by producing the new file transfer executing jobs via a file transfer executing job production means within a range under the largest number of file transfer executing jobs. CONSTITUTION:A file transfer executing job production means 5 obtains the number of working file transfer executing jobs and the number of file transfer executing jobs under a file transfer process by periodical reference to a file transfer executing job control table 4 and based on the working information 43 and the file transfer process information 44. Then the means 5 produces the new file transfer executing jobs within a range shown by the largest file transfer executing job number 41 in the case the difference between both job numbers is smaller than the prescribed value. At the same time, the information 43 and 44 stored in a file transfer executing job control table 4 are updated. Thus a file transfer process can be immediately carried out when a file transfer request control means 3 accepts a new file transfer request.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a file transfer method for transferring files between host computers.

[Conventional technology]

Conventionally, in this type of file transfer method, when the file transfer program is started, regardless of whether there is a file transfer request or not,
Create the required number of file transfer execution jobs to actually perform file transfer and keep them resident on the system, and when a file transfer request is received, the file transfer execution jobs that are resident on the system are used to process the file transfer. Either, or a file transfer execution job is generated every time a file transfer request occurs, and the generated file transfer execution zip is used to perform file transfer processing.

[Problems to be Solved by the Invention] The former of the above-mentioned conventional methods has the necessary number of file transfer execution jobs resident in the system, so it is possible to shorten the processing time for file transfer requests. However, if there are few file transfer requests, there is a problem that system resources are not used effectively. In addition, the latter generates a file transfer execution job every time a file transfer request occurs, so system resources can be used effectively, but if the system load is high, it may be difficult to execute a file transfer. There is a problem that jobs are not generated and it takes time to process file transfer requests.

An object of the present invention is to enable quick processing of file transfer requests while effectively utilizing system resources.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a file transfer method for transferring files between host computer systems, in which each of the host computers sets the maximum number of file transfer execution jobs that can be run on its own host computer. The maximum number of file transfer execution jobs indicated, the number of resident file transfer execution jobs indicating the minimum number of file transfer execution jobs that must be resident on the host computer, and the number of active file transfer execution jobs indicating the number of running file transfer execution jobs. and a file transfer execution job management table in which file transfer processing information indicating a file transfer execution job that is currently executing a file transfer process is stored, and the file transfer execution job management table is referenced in response to a file transfer request; a file transfer request management means for requesting a file transfer execution job capable of executing the file transfer process to perform the file transfer process and updating the contents of the file transfer execution ship management table; and periodically the file transfer execution job management table. Referring to , if the difference between the number of active file transfer jobs and the number of file transfer jobs that are executing file transfer processing becomes less than a predetermined value, the maximum number of file transfer jobs does not exceed the maximum number of file transfer jobs. a file transfer execution job generation unit that generates a file transfer execution job and updates the contents of the file transfer execution job management table, and periodically refers to the file transfer execution job management table and executes file transfer processing. If the number of file transfer execution jobs currently being executed is less than the number of resident file transfer execution jobs, file transfers in which no file transfer processing is being executed within the range of not reducing the number of file transfer execution jobs below the number of resident file transfer execution jobs. A file transfer execution job terminating means is provided for terminating the operation of the execution job and updating the contents of the file transfer execution job management table.

[Operation] Each host computer that performs file transfer is provided with a file transfer execution zip management table, file transfer request management means, file transfer execution job generation means, and file transfer execution job termination means. The file transfer request management means stores the maximum number of file transfer execution jobs, the number of resident file transfer execution jobs, operating information, and file transfer processing information. The file transfer request management means refers to the file transfer execution job management table in response to the file transfer request, requests the file transfer execution job that can execute the file transfer process to execute the file transfer request, and also requests the file transfer execution job management table Update the contents of. The file transfer execution job generation means periodically refers to the file transfer execution job management table, and determines that the difference between the number of active file transfer execution jobs and the number of file transfer execution jobs that are currently executing file transfer processing is equal to or less than a predetermined value. If the number of file transfer execution jobs is exceeded, file transfer execution jobs are generated within a range that does not exceed the maximum number of file transfer execution jobs, and the contents of the file transfer execution job management table are updated. The file transfer execution job termination means periodically refers to the file transfer execution job management table, and if the number of active file transfer execution jobs that are not executing file transfer processing becomes less than the number of resident file transfer execution jobs, To end the operation of file transfer execution jobs that are not performing file transfer processing within a range that does not make the number of file transfer execution jobs less than the number of resident file transfer execution jobs, and to update the contents of a file transfer execution job management table.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the present invention, including a host computer l and a host computer 11 connected by a communication line l. host computer 1
includes a file transfer management job 2 and a plurality of file transfer execution jobs 7-1 to 71, and the file transfer management job 2 includes a file transfer request management means 3, a file transfer execution job management table 4, and a file transfer execution job. It includes a generating means 5 and a file transfer execution job terminating means 6. Note that the host computer 11 also has the same configuration as the host combinator 1.

FIG. 2 is a diagram showing an example of the configuration of the file transfer execution zip management table 4, in which the maximum number of file transfer execution ships 41 indicating the maximum number of file transfer execution jobs that can be run on the host computer l; The number of resident file transfer execution jobs 42 indicating the minimum number of file transfer execution jobs that must be kept resident on the host computer 1, the operation information 43 indicating the file transfer execution jobs in operation, and each file transfer execution job. File transfer processing information 4 indicating whether or not is currently executing file transfer processing
4 is stored.

When the file transfer request management means 3 receives a file transfer request from the user, it refers to the file transfer execution job management table 4 and determines whether the file transfer execution job is currently in operation or not, based on the operation information 43 and the file transfer processing information 44. Search for a file transfer execution job that is not currently processing, that is, a file transfer execution job that can execute file transfer processing. If there is a corresponding file transfer execution job, send a file transfer request to one of them. At the same time, the file transfer processing information 44 is updated, and if the file transfer processing information 44 does not exist, processing for the file transfer request is temporarily suspended. The file transfer execution job that has been notified of the file transfer request immediately transfers the designated file to and from the other host computer in accordance with the file transfer request.

The file transfer execution job generation means 5 periodically refers to the file transfer execution job management table 4 and
3 and the file transfer processing information 44, calculate the number of running file transfer execution jobs and the number of file transfer execution jobs in progress, and if the difference is less than a predetermined value (in this embodiment, the number of file transfer execution jobs is 0. ''), that is, if all running file transfer execution jobs are performing file transfer processing, the file transfer request management means 3 can immediately perform file transfer processing when it receives a new file transfer request. The maximum number of file transfer execution jobs is 4.
New file transfer execution job 7-j within the range indicated by 1
At the same time, the operation information 43 and file transfer processing information 44 in the file transfer execution job management table 4 are updated.

Similar to the file transfer execution job generation means 5, the file transfer execution job termination means 6 also periodically refers to the file transfer execution job management table 4, and determines the number of currently running jobs based on the number of resident file transfer execution jobs 42 and the operation information 43. If it is determined that the number of file transfer execution jobs exceeds the number of jobs indicated by the number of resident file transfer execution jobs 42, the file transfer Check the number of executed jobs, and only if it is determined that the number is less than the number of jobs indicated by the number of resident file transfer execution jobs 42, execute the file transfer when the file transfer process is not in progress as long as the number of resident file transfer execution jobs is not less than 42. The job operation is ended and the operation information 43 is updated.

FIG. 3 is a block diagram showing an example of the configuration of the file transfer request management means 3, which includes a file transfer request receiving section 31, a file transfer execution job determining section 32, and a file transfer request requesting section 33.

When the file transfer request receiving unit 31 receives a file transfer request from a user, it passes the received file transfer request to the file transfer request requesting unit 33. When a file transfer request is passed to the file transfer request request unit 33, the file transfer execution job determination unit 32 refers to the file transfer execution job management table 4, and executes the file transfer execution that is currently in operation and is not executing file transfer processing. One of the jobs is a file transfer execution job that performs file transfer processing in response to the above file transfer request. After determining a file transfer execution job to perform file transfer processing, the file transfer execution job determination unit 32 sends the file transfer request request unit 3
The information indicating the file transfer execution job determined above is passed to 43.3 and the operation information in the file transfer execution job management table 4. The file transfer processing information 44 is updated. When the file transfer request request unit 33 receives information indicating a file transfer execution job that performs file transfer processing from the file transfer execution zip determination unit 32, it requests a file transfer request for the file transfer execution job indicated by the information. Let's do it.

FIG. 4 is a block diagram showing an example of the configuration of the file transfer execution job generation means 5, which includes a job generation determination section 51 and a job generation section 52. As shown in FIG.

The job generation determination unit 51 periodically refers to the file transfer execution job management table 4, and determines the number of file transfer execution jobs currently in operation and the file transfer processing based on the operation information 43 and file transfer processing information 44. If it is determined that the number of file transfer execution zips is equal to
A job generation request is passed to the job generation unit 52, and the contents of the file transfer execution job management table 4 are updated. When the job generation unit 52 receives a zip generation request from the job generation determination unit 51, it generates a file transfer execution job.

FIG. 5 is a block diagram showing an example of the configuration of the file transfer execution job termination means 6, which includes a job termination determination section 61 and a job termination section 62. As shown in FIG.

The job end determination unit 61 periodically refers to the file transfer execution job management table 4 and determines the number of file transfer execution zips in operation from the number of resident file transfer execution jobs 42 based on the number of resident file transfer execution jobs 42 and the operation information 43. If it is determined that the number is greater, the number of file transfer execution jobs that are executing file transfer processing is further checked based on the file transfer processing information 44, and the number of file transfer execution jobs that are executing file transfer processing is determined. Only when it is determined that the number of jobs is less than the number of jobs indicated by the number of resident file transfer execution jobs 42, the number of jobs in the running file transfer execution zip is not reduced to less than the number of jobs indicated by the number of resident file transfer execution jobs 42. The file transfer execution job to be terminated is determined, information indicating the determined file transfer execution job is passed to the job termination unit 62, and the operation information 43 is updated. The job termination unit 62 terminates the operation of the file transfer execution zip indicated by the information sent from the job termination determination unit 61.

(Effects of the Invention) As explained above, the present invention allows the number of file transfer requests to increase and the difference between the number of active file transfer execution jobs and the number of file transfer execution zips performing file transfer processing to be less than a predetermined value. , the file transfer execution job generation means generates a new file transfer execution job within the range of the maximum number of file transfer execution jobs, so that the next file transfer request to be accepted can be processed quickly. It becomes possible to perform the following.Also,
Conversely, if the number of file transfer requests decreases and the number of file transfer execution jobs that are executing file transfer processing becomes less than the number of resident file transfer execution jobs, the number of active file transfer execution jobs decreases to the number of resident file transfer execution jobs. Since the operation of file transfer execution jobs that are not executing file transfer processing is terminated within a range that does not become less than the number of jobs, system resources can be used effectively. Therefore,
According to the present invention, it is possible to quickly process file transfer requests while effectively utilizing system resources.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram showing an example of the configuration of the file transfer execution job management table 4, FIG. 3 is a block diagram showing an example of the configuration of the file transfer request management means 3, FIG. 4 is a flow diagram showing an example of the configuration of the file transfer execution job generation means 5, and FIG. 5 is a block diagram showing an example of the configuration of the file transfer execution job termination means 6. In the figure, 1, 11... host computer, 2...
... File transfer management job, 3... File transfer request management means, 4... File transfer execution job management table, 5... File transfer execution job generation means, 6.
...File transfer execution job termination means, 7-1 to 7-i
... File transfer execution job, 31... File transfer request reception unit, 32... File transfer execution job determination unit, 33... File transfer request request unit, 41... Maximum number of file transfer execution jobs, 42... Number of resident file transfer execution jobs, 43... Operation information, 44... File transfer processing information, 51... Job generation determination unit, 5
2...Job generation unit, 61...Job end determination unit,
62...Job end part.

Claims (1)

[Claims] In a file transfer method in which files are transferred between host computer systems, each host computer has a maximum file transfer function that indicates the maximum number of file transfer execution jobs that can be run on the host computer. The number of execution jobs, the number of resident file transfer execution jobs that indicate the minimum number of file transfer execution jobs that must be resident on the local host computer, the operation information that indicates the file transfer execution jobs that are currently running, and the file transfer process. A file transfer execution job management table that stores file transfer processing information indicating the file transfer execution job that is being executed; a file transfer request management means that requests file transfer processing to possible file transfer execution jobs and updates the contents of the file transfer execution job management table; and a file transfer request management means that periodically refers to the file transfer execution job management table and If the difference between the number of file transfer execution jobs and the number of file transfer execution jobs currently executing file transfer processing becomes less than a predetermined value, a file transfer execution job is generated within the range not exceeding the maximum number of file transfer execution jobs. and updating the contents of the file transfer execution job management table. If the number is less than the number of resident file transfer execution jobs, terminate the operation of the file transfer execution jobs that are not executing file transfer processing within the range of not reducing the number of file transfer execution jobs below the number of resident file transfer execution jobs. and file transfer execution job termination means for updating the contents of the file transfer execution job management table.