JPH01128149A - Loading control system for control program of work station - Google Patents

Abstract

PURPOSE:To extremely shorten the loading time to plural simultaneous requests by storing previously a control program into a main memory and loading the loading requests via a multi-tasking system. CONSTITUTION:All work station control programs are previously stored in a main memory 2 at initialization. When the work station control program loading requests are produced at one time from work stations 9-1-9-3, a work station control mechanism 3 gives a loading execution instruction to a work station control program loading mechanism 7 in the order of acceptance of those requests. Thus the mechanism 7 gives an instruction to a task control processing part 5 to produce a task to perform the loading control of the station 9-1. The part 5 produces a task X. In the same way, the part 5 produces tasks X<0> and Y with reception of due instructions. Then the tasks X and X<0> read the X control program stored in the memory 2; while the task Y reads a Y control program. Then the program loading process is carried out to the stations 9-1-9-3 via the mechanism 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a workstation control program loading control method, and in particular, in a system including a plurality of workstations connected to a host system via a communication line, the present invention relates to a workstation control program loading control method. The present invention relates to a method for loading a control program for a workstation stored in an external storage device in accordance with a load request from the workstation.

[Conventional technology]

Conventionally, this type of workstation control program loading control method loads a workstation control program stored in an external storage device (mainly a magnetic disk device) each time a load request is made from a workstation, and processes the load request. The workstation is being loaded.

Furthermore, when load requests are issued from multiple workstations simultaneously, the loading process is performed serially due to performance problems with the external storage device.

[Problem that the invention seeks to solve]

The conventional workstation control program loading control method described above reads a control program from an external storage device each time in response to a control program load request from a workstation.

Since the loading process is performed on the workstation, there is a disadvantage that the loading process time increases by the time required to read from the external storage device, and this disadvantage becomes particularly noticeable as the control program capacity increases.

Additionally, even if control/program load requests occur from multiple workstations at the same time due to performance issues with external storage devices, the loading process is performed serially, so the loading time to all workstations is reduced to the same time as one computer. Loading time x number of workstations.

Therefore, in a system in which a large number of workstations are connected, the loading processing time increases, and the start-up of each workstation varies, resulting in poor operability.

[Means for solving problems]

The workstation control program loading control method of the present invention includes a plurality of workstations connected to a host system through two communication lines, a workstation control mechanism for controlling the workstations, a main storage device,
In an information processing apparatus comprising an external storage device, a memory management control processing section that manages the main storage device, and a task management control processing section that manages execution of a control program, the control program of the workstation is stored in the external storage device in advance. a workstation control program copying mechanism having a program and copying a workstation control program stored in the external storage device to the main storage device at the time of startup of the information processing device; The present invention is characterized by comprising a workstation control program loading mechanism that reads the workstation control program copied to the main storage device in response to a program load request, and loads the In program to the requested workstation.

〔Example〕

Next, one embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 shows the configuration of an embodiment of the present invention. In the figure, 1 is a host system, 2 is a main storage device, and 2-3 is a control table.

3 is a workstation control mechanism (hereinafter abbreviated as a control mechanism); 4 is a memory management control processing section; 5 is a task management control processing section; 6 is a workstation control program copying mechanism (hereinafter abbreviated as a copying mechanism); 7 is a workstation control ZOLOGRAS (q) loading mechanism (hereinafter referred to as loading mechanism); 7-1.7-2.7-3 are task X and task Y that load the control program to each workstation.
, Jsk X0 and 8 are external storage devices, 8-1 is a control program for workstation X (hereinafter referred to as the control program for X), 8-2 is a control program for workstation ), 9 is a communication line, 9-1 is a workstation X,
9-2 fd workstation X09-3 is workstation Y.

FIG. 2 shows the format of control table 2-3 shown in FIG.

Next, the actual operation will be explained with reference to the drawings. The power of the host system 1 is turned on and control is passed to the copying mechanism 6 in the process of initializing the system. The copying mechanism 6 reads the index section of the workstation control programs stored in the external storage device 8, obtains the size of each workstation control program, and based on the size, sends the main copy to the memory management control processing section 4. An instruction is given to secure an area on the storage device 2, and a control table 2-3 is created.

After securing the area, the copying mechanism 6 copies the X control program 8-1. The X control program 8-2 is read and the control program is copied to areas 2-1 and 2-2 of the main storage device 2. The above-mentioned process will be specifically explained as follows.

The copying mechanism 6 is for X and X stored in the external storage device 8.
I read the index part of the control program 8-1.8-2,
The size of the X control program 8-1 is 200KB.

Obtain the size 300KB of the X control program 8-2. Next, the copying mechanism 6 instructs the memory management control processing section 4 to reserve a size of 200 KB for the X control program 8-1 in the main storage device 2. The memory management control processing unit 4 checks whether a 200 KB area can be secured in the main storage device 2, and if it can be secured, it secures the area and sends a notification to that effect and an address on the main storage device 2 to the copying machine. Notify M6. If the memory management control processing unit 4 is unable to secure the 200 KB area, it notifies the copying mechanism 6 of this fact.

The copying mechanism 6 checks the notification from the memory management control processing unit 4 and when the 200 KB area is secured.

The workstation type, the status indicating that it exists on the main memory, the workstation size, and the address on the main memory 2 are written in the control table 2-3. If 20
If the 0KB area is not secured, the control mechanism 6
writes the workstation type and the status indicating that it does not exist in main memory to control table 2-3. The above-described processing is also performed for the X control program 8-2, and the area securing processing for the main storage device 2 is completed.

Next, the copying mechanism 6 refers to the control table 2-3, and the main storage device 2
Get the workstation type that has space reserved on it. If the workstation type of the X control program 8-1 is secured on the main storage device 2,
The copying mechanism 6 reads the X control program 8-1 stored in the external storage device 8, and copies the contents of the X control program 8-1 to the area 2-1. The above-described processing is also performed for the X control program 8-2, and the processing of the copying mechanism 6 is completed, and control is passed to the secondary system initialization step.

Next, the process of loading the control program into the workstation will be explained. 9-1, 9-2 or 9-
When a control program load request is generated from the workstation shown in 3, the load request is notified to the control mechanism 3 through the 2 communication line 9. The control mechanism 3 acquires the workstation type from the notification of the load request, adds the type, and instructs the loading mechanism 7 to execute the loading process. When the loading mechanism 7 receives the instruction to execute the loading process, it refers to the main storage 20 control table 2-3 to check whether the requested workstation type exists in the main storage 2. If it exists on the main storage device 2, the loading mechanism 7 sends it to the task management control processing unit 5.

Instructs to generate a task for control program loading control. After creating a task, the loading mechanism 7 executes under this task.

Next, the loading mechanism 7 executed under a certain task obtains the loading information of the workstation control program to be loaded from the control table 2-3.

The workstation control program stored in the main storage device 2 is read and sent to the control mechanism 3.

Instructs the corresponding workstation to load the workstation control program.

A concrete explanation of the above-mentioned workstation loading process is as follows. The prerequisite for this case is that all workstation control programs exist in the main storage device 2, and the description will be made assuming that load requests are issued from a plurality of workstations at the same time.

When workstation control program load requests are issued simultaneously from the workstations 9-1, 9-2, and 9-3, the control mechanism 3 instructs the loading mechanism 7 to execute a loading process in accordance with the acceptance of the load requests. Assume that the load request for workstation 9-1 is accepted first.

The loading mechanism 7 instructs the task management control processing unit 5 to generate a task that performs load control to the workstation 9-1, and the task management control processing unit 5 generates task X. Next, the loading mechanism 7 sequentially accepts load requests from the workstations 9-2 and 9-3, and sends the task xO to the task management control processing unit 5.
, task Y, and the task management control processing unit 5 generates task XO.

Generate task Y. These tasks are executed asynchronously. Tasks The task Y reads the control program for X in the area 2-2 stored in the main storage device 2, and executes the loading process to the workstation 9-3 via the control mechanism 3.

As mentioned above, this workstation control program loading process is performed using a multitasking method when there are workstations in the main storage device 2 and when load requests are issued from multiple workstations at the same time. ing.

Margins below [Effects of the Invention] As explained above, the present invention stores the workstation control program in advance on the main storage at the time of system initialization, thereby shortening the processing time for loading the control program into the workstation. Even if a control program load request occurs from multiple workstations at the same time, there is no performance problem peculiar to external storage devices, so the loading process to each workstation can be performed using a multitasking method, compared to the conventional serial This method has the effect of significantly improving the loading processing time.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of the present invention, and FIG. 2 is a format diagram of the control table shown in FIG. 1. 1... Host system, 2... Main storage device, 2-3
... control table, 3... workstation control mechanism,
4...Memory management control processing unit, 5...Task management control processing unit, 6...Workstation program copying mechanism. 7... Workstation control program loading mechanism, 7-1... Task X, 7-2... Task Y. 7-3...Task X0, 8...External storage device, 8-
1... Control program for workstation X, 8-
2... Control program for workstation X, 9.
...Communication line, 9-1...Workstation X, 9
~2...Workstation X0+ 93...Workstation Y.

Claims (1)

[Claims] 1. A plurality of workstations connected to a host system via communication lines, a workstation control mechanism that controls the workstations, a main storage device, an external storage device, and a memory management control process that manages the main storage device. and a task management control processing unit that manages the execution of a control program, wherein the external storage device has a control program for the workstation in advance, and at the time of startup of the information processing device, a workstation control program copying mechanism for copying a workstation control program stored in the external storage device to the main storage device; and a workstation control program copying mechanism for copying a workstation control program stored in the external storage device to the main storage device; A workstation control program loading control method comprising: a workstation control program loading mechanism that reads a workstation control program and loads the control program to a requested workstation.