JPH03189826A - System for switching plural programs - Google Patents

Abstract

PURPOSE:To improve the processing performance by constituting a system so that generation of a program switching requirement is detected, and when it is decided that its requirement is not an execution request of the program switching request, its requirement is accumulated and executed after the processing of the program switching requirement. CONSTITUTION:When generation of a program switching request to other program is detected by a detecting means 3 at the time of operation of a program, whether it is an execution requirement or not is decided. Subsequently, a requirement decided to be other request than the execution request by a deciding means 4 is stored in a store means 5, and it is executed after the program switching processing executed by the execution requirement. Accordingly, the processing can be executed to the operating program, and the processing whose execution is unnecessary comes not to enter. In such a manner, the processing performance can be improved.

Description

TECHNICAL FIELD The present invention relates to a multiple program switching method, and more particularly to multiple program switching processing in a multi-job operating system that runs multiple programs simultaneously.

Prior Art Conventionally, in the multiple program switching method of a multi-job operating system, as shown in FIG.
When requests from other programs 1 are received by the request reception unit 21, the requests are processed by the request processing unit 22 in the order in which the requests are received.

That is, as shown in FIG.
Only job A in the foreground is displayed on the screen, and jobs B and C in the background are displayed on the CRT screen.
is not displayed on the screen.

Therefore, request 11 "Display 0 for job A" and request 13
``Display ★ for job A'' is reflected on the CRT, but request 12 ``Display Δ for job B'' is not reflected on the CRT.

This request 12 is the request 14 “Make job B the foreground”
is executed, job B is switched to the foreground, and then reflected on the CRT.

In such a conventional multiple program switching method, requests from other programs 1 are processed by the request processing unit 22 in the order in which the requests are received by the request reception unit 21. Therefore, if the program exists in the background, Display processing that does not need to be performed, such as request 12, may be performed.
This has the disadvantage that performance deteriorates due to unnecessary processing.

OBJECTS OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks of the conventional methods, and an object of the present invention is to provide a multiple program switching method that can improve processing performance.

Structure of the Invention The multiple program switching method according to the present invention is a multiple program switching method with a mechanism for simultaneously operating multiple programs, and includes a detection means for detecting the occurrence of a program switching request to another program when the program is operating. and determining means for determining whether or not the program switching request is an execution request when the detection means detects the occurrence of the program switching request; and storage means for storing the request, and the request stored in the storage means is executed after the program switching process executed by the execution request.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, upon receiving a processing request from another program 1, a request reception section 2 sends the request to a program switching occurrence determination section 3.

The program switching occurrence determining unit 3 determines whether a program switching has already occurred before the request, and if a program switching has occurred, sends the request to the program switching execution request determining unit 4, and sends the request to the program switching execution request determining unit 4. If no switching has occurred, the request is sent to the request processing section 6.

The program switching execution request determining unit 4 determines whether the request sent from the program switching occurrence determining unit 3 is a program switching execution request or not, and if it is a program switching execution request, sends the request to the request processing unit 6. However, if it is not a program switching execution request, the request is sent to the request storage section 5.

The request storage section 5 stores the requests sent from the program switching execution request determination section 4 in a storage section (not shown).

The request processing unit 6 processes the requests sent from the program switching occurrence determination unit 3 and the program switching execution request determination unit 4, and processes the program switching execution request sent from the program switching execution request determination unit 4.
The storage request processing unit 7 is notified of the end of the program switching process.

When the storage request processing unit 7 is notified of the end of the program switching process from the request processing unit 6, it reads out the request of the program switched by the program switching from among the requests accumulated by the request storage unit 5, and processes the request. I do.

FIG. 2 is a diagram showing the operation of one embodiment of the present invention. The operation of an embodiment of the present invention will be explained using FIG. 1 and FIG. 2.

When job A is in the foreground displayed on the screen of a CRT (not shown), and jobs B and C are in the background that are not displayed on the CRT screen, part 2 receives the request for job B. When a program switching request is received, the program switching request is sent to the program switching occurrence determining section 3.

The program switching occurrence determination unit 3 checks whether a program switching request with the highest priority has occurred before the program switching request, and in this case, it is determined that a program switching request with the highest priority has not occurred. Therefore, the program switching request is sent to the request processing section 6 and processed.

At this time, the generation of the program switching request is detected by the request processing unit 6.
It is held in a register (not shown) or the like.

Accordingly, request 11 “Display O for job A”, request] 2
``Display Δ for job B'', Request 13 ``Display Δ for job A''
When the requests for "Display" are sequentially received by the unit 2, the program switching occurrence determining unit 3 determines that a program switching has occurred before these requests 11 to 13, and Since the program switching execution request determining unit 4 determines that the program switching request with the highest priority is not the execution request of the program switching request with the highest priority, these requests 1
−1 to 13 are the request content save area 1 by the request storage unit 5.
5, and their processing is put on hold.

Here, request 11. ．． When request number 13 is accepted by department 2, a request to switch to job B has occurred.
Even if requests 1, 1, and 13 are executed, the CRT screen is immediately switched to job B, so requests 1, 1, and 13 are accumulated in the request content save area 15.

Therefore, request 1.1.13 will be processed after the CRT screen is switched to job B and then again after the CRT screen is switched to job A.

Next, when the request [4] "Make job B the foreground" is accepted by the request section 2, the program switching occurrence determination section 3 determines that a program switching has occurred before this request 14. At the same time, since the program switching execution request determining section 4 determines that this request 14 is the execution request of the program switching request with the highest priority, this request 14 is sent to the request processing section 6 and processed.

When request]4 is processed by the request processing unit 6 and job B is switched to the foreground, the request processing unit 6 notifies the storage request processing unit 7 of the end of the program switching process.

When the storage request processing unit 7 is notified of the end of the program switching process from the request processing unit 6, the storage request processing unit 7 stores the requests 11 to 3 stored in the request content save area 15 by the request storage unit 5 that were switched by the program switching. Request 12 for job B is read out, the request 12 is processed, and Δ is displayed for job B.

In this way, requests 11 to 13 accepted in section 2 are accepted.
The program switching occurrence determination unit 3 determines that a program switching request has already occurred before the program switching request, and if these requests 11 to 1-3 do not request execution of the program switching request with the highest priority, the program When judged by the switching execution request determination unit 4, these requests 11 to 1
3 is stored in the request content save area 15 by the request storage unit 5, and is executed after the program switching request is processed, so that a new program existing in the foreground, that is, a new program displayed on the CRT is always executed. Processing can be performed on the running program, and wasteful processing such as display processing that does not need to be performed is not included, so processing performance can be improved.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, when the occurrence of a program switching request is detected and it is determined that the program switching request is not an execution request, the request is stored and the program switching request is processed. This has the effect of improving processing performance by executing it after.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a diagram showing the operation of an embodiment of the present invention, FIG. 3 is a block diagram showing the configuration of a conventional example, and FIG. 4 is a block diagram showing the configuration of a conventional example. It is a figure which shows the operation|movement of a conventional example. Explanation of symbols of main parts 2...Request reception part 3...Program switching occurrence determination part 4...
・Program switching execution request determination unit 5...Request storage unit 6...Request processing unit 7...Storage request processing unit 15...Request content save area

Claims (1)

[Claims] (1) A multiple program switching system of a mechanism that operates multiple programs simultaneously, the detection means detecting the occurrence of a program switching request to another program when the program is operating, and the detection means detects the program switching request. a determination means for determining whether or not the program switching request is an execution request when the occurrence of the program switching request is detected; and a storage means for storing a request determined by the determination means to be a request other than the execution request; A plurality of program switching method characterized in that the request stored in the storage means is executed after the program switching process executed by the execution request.