JPH07129480A - File transfer device - Google Patents

Abstract

PURPOSE:To provide a file transfer device executing the file transfer corresponding to the criticality of a file transfer request and improving the efficiency and the flexibility of the file transfer. CONSTITUTION:This device is provided with a transfer scheduling control part 2 provided with the order queue corresponding to the criticality of a file transfer request, a free status control table 3 storing the free status of a communication path, a transfer processing part 4 executing the file transfer request through either one of the two communication paths corresponding to the criticality of the file transfer request, a priority transfer communication path 5 having a priority, a shared request communication path 6 and a normal request communication path 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file transfer performed between host computers, and more particularly to a file transfer apparatus which prioritizes and executes according to the urgency of the file transfer.

[0002]

2. Description of the Related Art Conventional file transfer between host computers is performed by establishing a communication path for file transfer for each host computer, registering the file transfer requests in a queue in a first-come-first-served basis, and executing them sequentially. Has been taken.

[0003]

In the above-mentioned conventional method, all file transfer requests are treated as having the same level of urgency. Therefore, in order to prioritize the transfer, the business process that is the requester of the file transfer is processed. The program itself prioritizes file transfers. However, even if the file transfer requester orders the file transfer requests according to the urgency, the first-in-first-out transfer request is made by the transfer scheduling control unit that schedules the file transfer or the transfer processing unit that sends the file to the communication path. When it is running, late arrival but urgent file transfers cannot be performed until it is complete. Therefore, even in the case of file transfer having a priority order, the effect of the priority order cannot be exhibited except for the regularly scheduled file transfer.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a file transfer device for executing file transfer between host computers by prioritizing them according to their urgency.

Therefore, the file transfer device of the present invention, which is provided in the host computer for prioritizing the file transfer between the host computers according to the urgency of the file transfer, is provided corresponding to the urgency of the file transfer. A transfer scheduling control unit that schedules the execution of the request when the request for file transfer is registered in a priority queue and the communication path provided corresponding to the urgency of the request is in an empty state; A free status management table that stores whether the file is in use by execution of file transfer or is in a free status due to termination, and a file transfer request scheduled by the transfer scheduling control unit is registered in an empty queue,
The communication path corresponding to the urgency of the request registered in the empty queue is selected, the file transfer is executed through the communication path, and it is determined whether the communication path is in use or in an empty state. And a transfer processing unit that registers the status management table.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

Referring to FIG. 1, which shows the configuration of an embodiment of the present invention, the file transfer apparatus 1 has a urgency level of file transfer from a business processing unit (not shown) which is a request source of the file transfer. When a request is accepted and the request is registered in a high-ranking, medium-ranking, or low-ranking queue corresponding to the urgency of the request, and the communication path corresponding to the urgency of the request is available, A transfer scheduling control unit 2 that schedules the execution of the request, a scheduled request is registered in the priority free queue or the normal free queue, and file transfer is performed through a communication path corresponding to the priority free queue or the normal free queue. And the transfer processing unit 4 for registering the busy or free status of the communication path in the free status management table 3, and the priority corresponding to the urgent level of high priority. A communication path 5 feed, a sharing request communication path 6 corresponding to the urgency of high rank or medium rank, the normal communication paths 7 corresponding to the urgency of the middle rank or low rank,
Have. Further, referring to FIG. 6 for explaining the details of the availability management table 3, when the priority communication path 41, the sharing request communication path 42, and the normal communication path 43 are in the availability status due to the completion of the file transfer, “0” is set. When the file transfer is in use, the index of "1" is set in the columns 44, 45 and 46 corresponding to the respective communication paths.

Next, referring to FIG. 2 for explaining the operation of the file transfer device, the transfer scheduling control unit 2
Register a high priority queue 21 for registering a file transfer request of high priority, a middle queue 22 for registering a file transfer request of medium priority, and a file transfer request of low priority. And a low-ranking queue 23.
Further, the high-ranking queue 21, the medium-ranking queue 22, and the low-ranking queue 23 are scanned for file transfer requests registered in the order of high, medium, and low. Then, when there is a file transfer request registered in the high-order queue 21 in the scanning order, the transfer scheduling control unit 2 determines that at least one of the priority transfer communication path 5 and the sharing request communication path 6 is available. Is detected by the availability management table 3, the request is sent to the transfer processing unit 4 and registered in the priority availability queue 31. Next, the transfer scheduling control unit 2 determines that at least one of the shared request communication path 6 and the normal request communication path 7 is free when there is a file transfer request registered in the middle-ranking queue 22. The transfer is detected by the management table 3, the transfer processing unit 4 schedules the execution of the request, and is registered in the normal empty queue 32. Furthermore, when there is a file transfer request registered in the low-priority queue 23, the transfer scheduling control unit 2 indicates that the normal request communication path 7 is in the free status management table 3
When detected by, the request is sent to the transfer processing unit 4 and registered in the normal empty queue 32.

Further, the transfer processing unit 4 scans whether or not requests are registered in the order of the priority empty queue 31 and the normal empty queue 32. Then, when the request is registered in the priority free queue 31, the transfer processing unit 4 sends a file transfer request through the higher priority free communication path of the free transfer priority transfer communication path 5 or the sharing request communication path 6. Execution is performed, and the index of “1” indicating that the communication path is in use is stored in the availability management table 3. In addition, when the request is registered in the normal empty queue 32, the transfer processing unit 4 passes through the high-order empty communication path of the shared request communication path 6 or the normal request communication path 7 in the empty state,
The file transfer request is executed, and the index of “1” indicating that the corresponding communication path is being used is stored in the availability management table 3.

Next, referring to FIG. 3 which is a flow chart showing the operation of the transfer scheduling unit 2, FIG. 4 (a) illustrating the operation started by the acceptance of the file transfer request and the file transfer being completed and used. The operation will be described with reference to FIG. 4B exemplifying the operation when the communication processing availability notification is received from the transfer processing unit 4.

First, the transfer scheduling controller 2
Referring to FIG. 4A as an example, when a file transfer request having an intermediate degree of urgency is received from the job processing unit (step 201 in FIG. 3), it is registered in the intermediate order queue 22 (step 202). Then, the transfer scheduling control unit 2 scans the high-ranking queue, the middle-ranking queue, and the low-ranking queue in this order (step 203), and finds the request registered in the high-ranking queue 21 (step 2).
04 Y). The transfer scheduling control unit 2 checks whether or not the priority transfer communication path 5 or the shared request communication path 6 corresponding to the high-order queue 21 is free by the availability management table 3. Free space management table 3
Priority transfer communication path 441 and sharing request communication path 45
Since both 1s are "0", there is a vacant situation (step 2).
05 Y). Then, the transfer scheduling control unit 2
Sends the request registered in the high-order queue 21 to the transfer processing unit 4, and the priority empty queue 31 of the transfer processing unit 4
(Step 206).

Next, referring to FIG. 4B, the operation of the transfer scheduling control unit 2 when the execution of the file transfer is completed, the transfer processing unit 4 notifies the end of the communication path by the end of the file transfer. Upon acceptance (step 207), the transfer scheduling controller 2 scans the priority queue (step 203) and finds the request registered in the medium priority queue (Y in step 204).
Whether or not the shared request communication path 6 or the normal communication path 7 corresponding to the middle queue 22 is free is checked by the free space management table 3 (step 205). The transfer scheduling control unit 2 uses the availability management table 3
It is determined that the shared communication path 452 and the normal request communication path 462 of “0” are “0” indicating the availability (Y of step 205). Then, the transfer scheduling control unit 2
Sends the request registered in the intermediate queue 22 to the transfer processing unit 4 and registers it in the normal empty queue 32 of the transfer processing unit 4 (step 206).

FIG. 6A illustrates the operation when the transfer processing unit 4 receives the scheduled transfer request from the transfer scheduling control unit 2 and the operation when receiving the transfer end notification from the communication path. The operation of the transfer processing unit 4 will be described with reference to the flow chart 5 with reference to FIG. 6B. The transfer processing unit 4 includes the transfer scheduling control unit 2
When a transfer request is received from the medium-ranking queue 23 (step 301), the transfer request is registered in the normal empty queue 32 (step 302). The transfer processing unit 4 scans the empty queue from the highest level, finds a request registered in the priority empty queue (Y in step 304), and gives priority to the empty state management table 3 corresponding to the priority empty queue 31. Since both the communication path 443 and the shared request communication path 453 are “0”, the request registered in the priority empty queue 31 is passed through the priority request communication path 5 which is the higher level communication path (Y in step 305). Transfer is executed (step 306). Then, the transfer processing unit 4 sets "0" of the priority transfer communication path 443 of the availability management table 3 to "1" to make it in use (step 307). Further, referring to FIG. 6B, when the transfer processing unit 4 receives the transfer end notification (step 308), the transfer ended normal communication path 464 is changed from “1” in use to “0” in the vacant state. hand,
The transfer end is notified to the transfer scheduling control unit 2 (step 309). Further, the transfer processing unit 4 scans the priority empty queue 31 and the normal empty queue 32 from the higher level, and executes the file transfer of the request registered in the normal empty queue 32 through the normal request communication path 7 ( Steps 304 to 307). In the operation of the transfer scheduling control unit 2 or the transfer processing unit 4, when there is no request registered in each queue, each operation is terminated.

[0014]

As described above, according to the present invention,
By providing communication paths having priorities corresponding to the urgency of file transfer requests, and corresponding priority queues and free queues in advance, for example, long or medium urgency can be achieved. When a file transfer request that requires an urgent request occurs while transferring a file that requires time, the priority transfer communication path among the communication paths is
Since it can be assigned to a high-ranking request, a high-ranking urgency file transfer is performed without waiting for a free communication path. Further, according to the present invention, when performing file transfer for various kinds of work, each urgency is taken into consideration,
Since transfer scheduling can be set up, efficiency and flexibility of a series of file transfer processing can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a diagram illustrating priority control of file transfer by a priority queue corresponding to the urgency of the file transfer request and an empty queue corresponding to a communication path having a priority in FIG.

FIG. 3 is a flowchart of the operation of the transfer scheduling control unit in FIG.

4A and 4B are diagrams illustrating an operation when a transfer request is registered in a transfer scheduling control unit and an operation when a transfer is completed, respectively.

5 is a flowchart of the operation of the transfer processing unit in FIG.

6A and 6B are diagrams illustrating an operation when a transfer request scheduled by a transfer processing unit is registered, and an operation when a transfer is completed, respectively.

FIG. 7 is a diagram showing a configuration of a vacancy status management table.

[Explanation of symbols]

 1 File Transfer Device 2 Transfer Scheduling Control Unit 3 Free Space Management Table 4 Transfer Processing Unit 5 Priority Transfer Communication Path 6 Shared Request Communication Path 7 Normal Communication Path 21 High Priority Queue 22 Medium Priority Queue 23 Low Priority Queue 31 Priority Free Queue 32 Normal empty queue

Claims (4)

[Claims] 1. A file transfer apparatus provided in a host computer for executing a file transfer between host computers by prioritizing the file transfer according to the urgency of the file transfer system. A file transfer request is registered in, and when the communication path provided corresponding to the urgency of the request is in an empty state, a transfer scheduling control unit that schedules the execution of the request; A free status management table that stores whether the file is in use by execution or is in a free status when finished, and a file transfer request scheduled by the transfer scheduling control unit are registered in an empty queue and the empty queue is registered. Select the communication path corresponding to the urgency of the registered request, and through the communication path File transfer by
A file transfer device, comprising: a transfer processing unit that registers in the availability management table whether the communication path is in use or is available. 2. The transfer scheduling control unit, wherein the high-ranking requests of the urgency are placed in a high-ranking queue, the medium-ranking requests of the urgency are placed in a medium-ranking queue, or the low-ranking urgency is placed. When the registration is made or the file transfer end notification is received, the high-order queue, the medium-rank queue, and the low-order queue are sequentially requested by the requests. It is scanned whether or not it is registered, and one of the communication paths, one of the priority transfer communication path corresponding to the high rank and the sharing request communication path corresponding to the middle rank, is in a free status. When, the execution of the request registered in the high-order queue is scheduled, and either the shared request communication path or the normal-request communication path corresponding to the low order is scheduled. When one of the communication paths is empty, the execution of the request registered in the medium-ranking queue is scheduled, and when the normal request communication path is empty, it is registered in the low-ranking queue. 2. The file transfer device according to claim 1, wherein the execution of the request is scheduled. 3. The transfer processing unit sets a request for the high-order queue scheduled by the transfer scheduling control unit to a priority free queue, and a request for the medium-order queue scheduled by the transfer scheduling control unit. Alternatively, the request of the low-order queue is registered in the normal empty queue, and when the registration is made, or when the completion notification of the file transfer is received, the completion notification is notified to the transfer scheduling control unit and communication is performed. When the busy registration of the path is deleted from the availability management table, the priority free queue and the normal free queue are scanned in this order, and when the request is registered in the priority free queue, The priority transfer communication path or the sharing request communication that is in a status of request Of the higher priority communication path, registering that the communication path is in use in the availability management table and registering the request in the normal queue, The shared transfer communication path in the free status or the normal request communication path, whichever is higher, is executed through a communication path having a higher priority, and the fact that the communication path is in use is registered in the free status management table. The file transfer device according to claim 1. 4. The free space management table registers “1” for each of the priority transfer communication path, shared request communication path, and normal request communication path when in use, and “1” for free status. The file transfer device according to claim 1, wherein "0" is registered.