JPH0583323A - Communication method - Google Patents

Abstract

PURPOSE:To realize the communication method capable of processing the communication based always on the priority and securing the time limit to the utmost. CONSTITUTION:An object 3 formed to be a capsule for data, a communication content such as a destination, priority, a limit time and their operating means with respect to each request to be caused is dynamically generated and the scheduling of the object 3 is implemented based on the priority and the limit time. Thus, it is possible to process a communication having a high priority request with highest priority and a time limit to a transmission request is set individually and the communication method enabling keeping of the time limit is realized to the utmost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication method for controlling data transmission / reception between data processing devices such as computers.

[0002]

2. Description of the Related Art FIG. 2 is a software block diagram showing a conventional communication method. In the figure, 1 is a communication queue for queuing a transmission request generated in the data processing device, and 2 is a communication protocol for the transmission request when the transmission request queued in the communication queue 1 is transmitted. It is a communication task that performs processing according to.

Next, the operation will be described. Data communication performed between data processing devices such as computers is usually controlled using communication software having a hierarchical structure. Therefore, the transmission request to the communication software of each layer is sent from the communication software or application of the higher layer.

The communication queue 1 queues the transmitted transmission request, and hands it over to the communication task 2 in consideration of its priority. Next, communication task 2 is communication queue 1
The received transmission request is processed according to the communication protocol, and is sent to the communication software or communication device in the lower hierarchy.

[0005]

Since the conventional communication method is configured as described above, even if a transmission request with a very high priority occurs while the communication task 2 is performing processing, it is executed. It is necessary to wait in the communication queue 1 until the processing in the middle ends, and a time loss occurs, and a plurality of communication tasks 2
However, there is a problem in that it is necessary to wait until any one of the processes is completed even when using.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to execute a communication of a request having a high priority with the highest priority and to keep a time constraint for the request as much as possible. Aim to get a way.

[0007]

According to the communication method of the present invention, objects are dynamically generated in response to individual requests that have occurred, and the scheduling of these objects is performed based on their priority and time constraints. It is a thing.

[0008]

According to the communication method of the present invention, each time a request is generated, the contents of the data, the communication destination such as the communication destination, the priority order, the restricted time, and the operation means (hereinafter referred to as a method) for them are encapsulated. By dynamically creating objects for each and scheduling each of these objects based on the priority and the constraint time of the object, it is possible to process the communication of a request having a high priority with the highest priority, and To realize a communication method that can keep the time constraint for the request as much as possible.

[0009]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 3 denotes an object dynamically generated for each transmission request, and this object 3 is communication contents such as data to be transmitted and a transmission destination,
It is generated by encapsulating priorities, constraint times, and methods for them.

Reference numeral 4 denotes a management task for generating the object 3 and managing and scheduling each object 3 each time a transmission request is generated.

Next, the operation will be described. Management task 4
Receives a transmission request and data from the communication software or application in the upper layer, encapsulates the communication contents such as the data and the destination, the priority, and the constraint time, and the method for them to generate the object 3. ..

The management task 4 then performs processing of the communication protocol executed by each object 3 and scheduling of transmission requests of communication software or communication devices in a lower layer based on the respective priorities and constraint times. ..

As described above, since the object 3 corresponding to the transmission request is dynamically generated at the time of the transmission request, it is possible to always process the communication of the transmission request having a high priority with the highest priority. , Each object 3
By performing the scheduling of, it becomes possible to keep the time constraint for the transmission request as much as possible.

Example 2. Further, in the above embodiment, the case where the transmission side processes the transmission request has been described.
A similar configuration may be applied to the receiving server task on the receiving side. In particular, by applying the above configuration to both the transmitting side and the receiving side, it becomes easy not only to perform transmission, but also to keep the restricted time from transmitting to receiving an acknowledgment (ACK).

Example 3. Note that the management task 4 in the above-described embodiment has a main function of performing scheduling based on the priority order and the constraint time, and since the processing of the communication protocol is encapsulated in the object 3, the management task 4 If the communication protocol is changed for each object 3 at the time of generation, it is possible to support a plurality of communication protocols.

[0016]

As described above, according to the present invention, the object is dynamically generated for each request, and the objects are scheduled based on the priority and the time constraint. , It becomes possible to process the communication of requests with high priority with the highest priority,
Further, it becomes possible to individually set the time constraint for the request, and there is an effect that a communication method that can keep the time constraint as much as possible can be obtained.

[Brief description of drawings]

FIG. 1 is a software configuration diagram showing a communication method according to an embodiment of the present invention.

FIG. 2 is a software configuration diagram showing a conventional communication method.

[Explanation of symbols]

 3 objects 4 management tasks

Claims (1)

[Claims] 1. A communication method for controlling transmission / reception of data between data processing devices, each time a request is generated, the contents of communication such as the data and the communication destination in the request, the priority order, the constraint time, A communication method characterized in that an object for the request, which encapsulates the operation means for them, is dynamically generated, and scheduling of each of the objects is performed based on the priority order and constraint time of the object.