JP2507547B2 - Data server - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] A data server that automatically generates a transfer processing process when necessary and performs transfer processing, and issues an access request after generating a transfer processing process by notifying a usage declaration and declaring an end. Is issued, the transfer processing process is extinguished, and the memory resources of the server are effectively utilized. Based on the notification of the use declaration, the transfer processing process generation unit that generates the transfer processing process and the access request A transfer processing unit that performs corresponding transfer processing, and a process disappearance processing unit that disappears the transfer processing process based on the notification of the end declaration are provided, and when accessing the resource of the server from the terminal,
The terminal notifies the server of the use declaration, causes the transfer processing process generation unit to generate a transfer processing process, and the transfer processing unit configuring the generated transfer processing process responds to an access request following the predetermined transfer processing unit. The transfer process is performed, and the process extinction processing unit causes the transfer process to disappear in response to the termination declaration from the terminal.

[Industrial applications]

The present invention relates to a data server that automatically generates a transfer processing process as needed and performs the transfer processing.

[Problems to be Solved by Conventional Techniques and Inventions]

Conventionally, as shown in FIG. 5, in a system in which a plurality of WSs (workstations) 1 to WS4 access resources (files etc.) of a server 21 to perform processing, control for access control on the server 21 is performed. Provider WS1
.. to WS4 are statically generated in advance by the number of WS1 to WS4 hard-connected to the system. However, in reality, even if they are connected by hardware, the power is off as shown in WS2 or locally used as shown in WS4, and the WS that does not use resources on the server 21 However, there is a problem in that even unused control broiders are statically generated in advance and memory resources are wasted.

An object of the present invention is to make an access request after notifying a use declaration and generating a transfer processing process, and notifying an end declaration to cause the transfer processing process to disappear and to effectively use a memory resource of a server. .

[Means for solving the problem]

 Means for solving the problems will be described with reference to FIG.

In FIG. 1, the transfer process generation unit 2-1 is
The transfer processing process 3 is generated in response to the transmission (notification) of the usage declaration from the WS (workstation) 5.

The transfer processing unit 3-1 controls the access of the file 4 etc. in response to the transmission of the access request from the WS 5 and transfers the data.

The process disappearance processing unit 3-2 disappears the transfer processing process 3 in response to the transmission of the end declaration from the WS 5.

A WS (workstation) 5 requests access to resources of the server 1 and performs processing.

[Action]

According to the present invention, as shown in FIG. 1, the transfer processing process generation unit 2-1 automatically generates the transfer processing process (provider) 3 in response to the transmission of the use declaration from WS5, and the transfer processing process (provider) 3 from WS5 is subsequently generated. In response to the transmission of the access request, the transfer processing unit 3-1 accesses and transfers the file 4, and in response to the transmission of the end declaration from WS5, the process disappearance processing unit 3-.
2 makes the transfer processing process 3 disappear.

Therefore, when the WS 5 tries to use the resource of the server 1, the transfer processing process 3 is dynamically generated and accessed, and then deleted, so that the WS 1 that simultaneously accesses the resource as a memory resource in the server 1 can access the resource. It is only necessary to mount the memory capacity for the number of units, and it is possible to reduce the memory capacity to the minimum necessary limit.

[Embodiment] Next, the configuration and operation of one embodiment of the present invention will be sequentially described in detail with reference to FIGS. 1 to 4.

In FIG. 1, the server 1 collectively manages resources such as files.

The provider management unit 2 includes a transfer processing process generation unit 2-
It is composed of 1 etc., waits for the transmission of the usage declaration from WS5, when it receives it, it automatically generates the transfer processing process 3 for each WS and requests the subsequent access request to the transfer processing process 3 concerned. is there.

The transfer processing process (provider) 3 accesses the file 4 or the like in response to the transmission of the access request from the WS 5 and performs transfer processing, and the transfer processing unit 3-1 transmits the end declaration from the WS 5 The process extinction processing unit 3-2 that extinguishes the process 3 is included.

The file 4 is one of the resources managed by the server 1 and stores data and the like.

The WS (workstation) 5 performs a predetermined process by accessing the resource managed by the server 1.

The user process 6 is a process that performs a task corresponding to the user.

The requester 7 sends a usage declaration to the server 1 in response to an access request from the user process 6 or the like,
It controls the transmission of resource access requests or the transmission of end declarations.

FIG. 2 shows an example of a message sent from WS5 to the server 1. The requester 7, which constitutes WS5, stores the code corresponding to either "use declaration", "access request", or "end declaration" in the command section of this message example and sends it to the server 1 for processing. I try to ask. The operation of the configuration shown in FIG. 1 will be sequentially described in detail below.

The operation of the provider management unit 2 shown in FIG. 1 will be described with reference to FIG.

In FIG. 3, WAIT is set. this is,
This means that the transfer processing process generation unit 2-1 that constitutes the first provider management unit 2 waits for the transmission of the usage declaration from WS5.

Determines whether the command is a usage statement or another command. In the case of use declaration, the provider (transfer processing process 3) is automatically generated in. For other commands, send an error response to WS5. This use declaration is determined by whether or not the code corresponding to the "use declaration" is stored in the command part, as shown in the message example of FIG. 2 transmitted from the WS 5 to the server 1.

Through the above processing, the transfer processing process generation unit 2-1 constituting the first provider management unit 2 automatically generates a provider (transfer processing process 3) in response to the use declaration transmitted from WS5, and The processing of subsequent access requests will be requested.

The operation of the FIG. 1 producer (transfer processing process 3) will be described with reference to FIG.

In FIG. 4, it is determined whether the command is an access or an end declaration. In the case of access, the transfer processing unit 3-1 constituting the provider transfers the data read from the file 4 to the access requesting WS. In the case of the end declaration, the process extinction processing unit 3-2 in FIG. 1 extinguishes the transfer processing process 3.

Through the above processing, the transfer processing unit 3-1 constituting the transfer processing process (provider) 3 in FIG. 1 performs the transfer processing in response to the access request transmitted from WS5,
On the other hand, the transfer processing process 3 is deleted in response to the end declaration.

〔The invention's effect〕

As described above, according to the present invention, when the WS 5 tries to use the resource of the server 1, the transfer processing process 3 is dynamically automatically generated, accessed, and then deleted. Therefore, as the memory resource in the server 1, a memory capacity corresponding to the number of WSs that access the resource at the same time may be mounted, and the memory capacity can be reduced to the minimum necessary limit.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a message example, FIG. 3 is an operation flowchart of a provider management unit, FIG. 4 is an operation flowchart of a provider, and FIG. Show. In the figure, 1 is a server, 2 is a provider management unit, 2-1 is a transfer processing process generation unit, 3 is a transfer processing process (provider), 3-1 is a transfer processing unit, 3-2 is a process disappearance processing unit, 5 Is a WS (workstation), 6 is a user process, and 7 is a requester.

Claims (1)

(57) [Claims] 1. A data server that performs a transfer process of data managed by the own system based on a request from another system, the transfer server performing the transfer process in response to an access request from another system, and the other system. The transfer processing process generation unit that generates a transfer processing process that has an extinction processing unit that extinguishes itself in response to the notification of the end declaration from the system is provided. Characteristic data server.