JPH01263733A - Program execution control system - Google Patents

Abstract

PURPOSE:To cancel the overhead of a task preparing erasing at the time of execution and to improve a processing efficiency by executing the execution control of a multitask construction program only with the information between respective means and the entry of an empty task control table in a multitask program construction. CONSTITUTION:A program library part 9 stores a parallel execution program executed in parallel beforehand. A task activation request means 4 designates a parallel execution program 10, for example, by designating the name and informs a task execution control part 7. The task execution control part 7, after it is confirmed by an empty task control table 8 that the empty task is present, informs a purpose program executing means 6 of this. The information is received, the designated parallel execution program is executed as a dynamic link from a program library part and after the execution, the effect is written to the empty task control table 8.

Description

[Detailed description of the invention] [Industrial application field] INDUSTRIAL APPLICABILITY The present invention is utilized in the field of information processing equipment.

The present invention relates to a program execution control system for multi-task structured programs.

〔overview〕

The present invention provides a program execution control method for executing a plurality of programs in parallel as one multitask structure program, in which parallel execution programs to be executed in parallel are stored in advance, and the stored programs are processed according to a predetermined procedure. It aims to improve processing efficiency by dynamically linking to a parallel execution program, executing the parallel task, and managing its execution.

[Conventional technology]

Conventionally, when executing a multi-task structure program in parallel, a new task is generated when the program is started and deleted when the program is terminated.

[Problem that the invention seeks to solve]

In the task management method in the conventional program execution control method described above, tasks are created and deleted each time a program is executed in parallel. Therefore, when programs are frequently executed in parallel, task creation and deletion time is an overhead. Therefore, there was a drawback that processing efficiency decreased.

SUMMARY OF THE INVENTION An object of the present invention is to provide a program execution control method that can reduce task creation/deletion time during execution and improve processing efficiency by eliminating the above-mentioned drawbacks.

[Means for solving problems]

The present invention provides a program execution control method comprising a means for executing a plurality of programs in parallel as one multi-task structure program, wherein the means stores a normal execution program to be normally executed and its normal tasks. a normal task part that has been executed, a program library part that stores in advance parallel execution programs to be executed in parallel,
A parallel task unit storing parallel tasks executed by the parallel execution program; and task activation control means having an empty task management table for managing activation of the parallel tasks and controlling activation of the parallel tasks; The unit includes a task activation request unit that notifies the task activation unit of a request to activate the parallel task that specifies the specific parallel execution program and executes the program, and the parallel task unit is configured to control the task activation control unit. The target program execution means dynamically links and executes the parallel execution program notified from the program library section, and writes a notification to that effect in the empty task management table after the execution is completed.

[Effect]

The program library section stores in advance parallel execution programs to be executed in parallel. The task activation request means specifies the parallel execution program, for example, by specifying its name, and notifies the task execution control section. After confirming that there is an empty task using the empty task management table, the task execution control unit notifies the target program execution means of this fact.

Upon receiving this notification, the target program execution means executes the designated parallel execution program as a dynamic link from the program library section, and writes a notification to that effect in the empty task management table after the execution is completed.

Therefore, execution of parallel tasks is automatically performed by notification between each means and writing to the empty task management table, and there is no need to create and delete parallel execution programs as in the past, improving processing efficiency. becomes possible.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

This embodiment is a program execution control method that is equipped with a means for executing a plurality of programs in one multitask structured program in parallel. A task part 2, a program library part 9 in which a parallel execution program 1O to be executed in parallel is stored in advance, a parallel task part 5 in which parallel tasks by a parallel execution program 10 are stored, and a space for managing the execution of parallel tasks. The normal task unit 2 includes a task activation control means 7 having a task management table 8 and controlling activation of the parallel task, and the normal task unit 2 specifies a specific parallel execution program 10 and requests activation of the parallel task to execute the program. The parallel task unit 5 includes a task activation request unit 4 that notifies the task activation control unit 7 of the task activation control unit 7.
includes a target program execution means 6 that dynamically downloads and executes the parallel execution program 10 notified from the task start control means 7 from the program library section 9, and notifies the empty task management table 8 of the fact after the execution is completed. I'm here. In addition, 1
is a multitask structure program section in which a multitask structure program is stored.

The present invention is characterized in that a normal task part 2 including a task start requesting means 4, a parallel task part 5 including a target program execution means 6, a task start control means 7 including an empty task management table 8, and a parallel execution program 10 are stored. The reason is that a program library section 9 is provided.

Next, the operation of this embodiment will be explained with reference to the flowcharts shown in FIGS. 2, 3, and 4.

As shown in the flowchart of FIG. 2, the task activation requesting means 4 sets the name of the normal execution program 3 to be executed in the communication area to the task activation control means 7 (step S1), and then sends the name of the normal execution program 3 to the task activation control means 7 (step S1). 7 (step S2>).

Furthermore, as shown in the flowchart of FIG. 3, the task activation control means 7 acquires one empty task from the empty task management table 8 (step 5ll), and informs the empty task that the task is in use. Fill in the management table 8 (step 512),
Step 313) To obtain the name of the normal execution program 30 to be executed from the communication area from the task start requesting means 4.
, sets the name in the communication area for the target program execution means 6 (step 514), and starts the target program execution means 6 in the acquired task (step 5).
15).

Finally, as shown in the flowchart of FIG. 4, the target program execution means 6 acquires the name of the parallel execution program 10 to be executed in parallel from the communication area from the task start control means 7 (Step 521), and selects the name of the parallel execution program 10. The parallel execution program 10 is dynamically linked from the program library stored in the program library section 9 (step 522).
), execute step 523), and when the execution is finished,
The fact that the task is vacant is entered in the vacant task management table 8 (step 524).

In the above-described embodiment, the name was used to specify the parallel execution program, but this may also be a code such as a program number.

〔Effect of the invention〕

As explained above, the present invention eliminates the overhead of creating and deleting tasks during execution by controlling the execution of a multi-task structure program simply by notifying each means and filling out an empty task management table, thereby improving processing efficiency. It has the effect of improving

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a flowchart of the task activation requesting means. FIG. 3 is a flowchart of the task activation control means. FIG. 4 is a flowchart of the target program execution means. DESCRIPTION OF SYMBOLS 1... Multitask structure program part, 2... Normal task part, 3... Normal execution program, 4... Task start request means, 5... Parallel task part, 6... Target program execution Means, 7...Task activation control means, 8
...Empty task management table, 9.Program library section, 10.Parallel execution program, S1 to S2.51
1-S15.521-S24...step.

Claims (1)

[Scope of Claims] 1. A program execution control method comprising means for executing a plurality of programs in parallel as one multi-task structured program, the means comprising: a normally executed program (
3) and the normal task section (where the normal task is stored)
2) and a parallel execution program (10) that is executed in parallel
Program library section (9) pre-stored with
and a task activation control unit comprising a parallel task unit (5) storing parallel tasks by the parallel execution program, and an empty task management table (8) for managing activation of the parallel tasks, and controlling activation of the parallel tasks. means (7), wherein the normal task unit specifies a particular parallel execution program and notifies the task activation means of a request for activation of the parallel task for executing the program; task activation request means (4); The parallel task unit is a target program that dynamically links and executes the parallel execution program notified from the task activation control unit from the program library unit, and writes a notification to that effect in the empty task management table after the execution is completed. Execution means (6
) A program execution control method characterized by comprising: