JPH05100871A - Sequence processing method - Google Patents

Abstract

PURPOSE:To provide a processing method whose responsiveness is good and which is easy to understand by planning a macro instruction showing a sequence which does not require technical knowledge, and its processing system when a series of the plural sequences are processed in parallel. CONSTITUTION:A condition wait table and a timer driver which periodically checks the realization of the condition of the condition wait table are provided. When the macro instruction is developed, a processing for outputting output, a processing for registering data to the condition wait table and a processing for waiting for an event flag which a monitor offers are executed. Thus, the condition wait method of the sequence processing with simple description and good responsiveness is obtained by operating a task composed of the macro instruction and the timer driver under the monitor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sequence processing method for processing a plurality of series of sequence processes in parallel.

[0002]

2. Description of the Related Art Up to now, multitasking processing and polling processing have been used for processing a plurality of series of processing in parallel. In multi-task processing,
As shown in the flowchart of FIG. 2, the condition waiting is satisfied and the two processes of checking the condition and waiting for time are repeated. Further, in the polling process, as shown in the flow chart of FIG. 5, waiting for satisfaction of the condition is described by checking the condition.

[0003]

However, in multitask processing, two processes of checking conditions and waiting for time must be described, and the description of waiting for time is redundant in describing the sequence flow. Also, in the polling process, although it is a description only for checking conditions, it is unclear in terms of a sequence description because there is a jump destination description when the conditions are not satisfied, and a part that manages multiple processes must be described. On the other hand, if the number of sequence processing steps increases, the responsiveness deteriorates. As described above, there is no method that can easily describe the wait for satisfaction of conditions, can describe a series of sequences in an easy-to-understand manner without describing overall management, and that does not impair responsiveness.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a processing method which can be expressed by a description of only a sequence and can be executed with high responsiveness.

[0005]

In order to achieve this object, the following condition waiting method has been invented. A macro instruction that describes one sequence processing among a series of sequence processing is prepared. This macro instruction moves its execution to the table registration unit, registers the condition described in the macro instruction in the condition wait table, and sets an event flag to notify the completion to the sequence processing after the condition is satisfied.
Then, the monitor for managing the multitask moves the processing to another series of sequences. Meanwhile, the timer driver driven by the hard timer monitors the condition wait table, and when the condition is satisfied, it is notified to the sequence process by the event flag registered on the table,
The configuration is such that the sequence is continued.

[0006]

In the condition waiting method for sequence processing according to the present invention, it is not necessary to describe the condition wait execution unit, and the condition wait description can be easily described by one macro instruction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a system in which one controller performs assembly 1 in sequence 1 and another assembly 2 in sequence 2 in one controller. FIG. 2 is a flowchart describing the parallel processing of these two sequences. In this embodiment, OUT AND WAI
Address p1 and bit p2 are used as information for moving to a macro instruction T (p1, p2, p3, p4), and address p3 and bit p4 are used as information for waiting for a condition.
Have passed and used. FIG. 3 describes the flow of processing at this time.

First, the assembly 1 task is processed and the operations 1 and 2 are performed.
To execute. Macro instruction OUT AN for performing operation 1
D WAIT (01, 01, 02, 01) is executed in the following procedure.

1) Output bit 01 to address 01. 2) Register address 02, bit 01 and event flag No1 in the condition wait table.

3) Execute a system call waiting for the event flag No1 and transfer control to the monitor.

4) The condition wait table is periodically monitored in the timer driver and bit 0 of the condition address 02 is monitored.
When 1 is turned on, the event flag No1 is set.

5) The monitor returns the process to the assembly 1 task. In this process, the assembly 2 task is processed when the control is transferred to the monitor of 3), and OUT AND WAIT (0
1, 03, 02, 03) are executed in the same procedure from 1) to 5). In this way, the assembly 1 task and the assembly 2 task are processed in parallel.

[0014]

As described above, according to the present invention, by using the condition waiting method of sequence processing, a plurality of sequences can be applied to each application without understanding the concept of multitasking or programming language. It can be expressed by a simple description of macro instructions suitable for, and can wait for a condition with good response.

[Brief description of drawings]

FIG. 1 is a system according to an embodiment.

FIG. 2 is a processing flowchart in an embodiment.

FIG. 3 is a processing method according to an embodiment.

FIG. 4 Multitask processing in the conventional technique

FIG. 5: Polling process in the conventional technique

Claims (1)

[Claims] 1. When a plurality of series of sequence processes are processed in parallel, a macro instruction describing one sequence process in the series of sequence processes, and a condition wait table for processing the macro instructions, It has a table registration unit for registering conditions in the condition wait table, a condition check unit for periodically checking the condition satisfaction of the condition wait table, and a condition satisfaction notification unit for notifying the macro command unit of the condition satisfaction. A sequence processing method characterized in that a condition wait can be simply described and processed at high speed.