JPH02267621A - I/o priority deciding system for computer - Google Patents

Abstract

PURPOSE:To increase the processing speed of the window desired by a user by scheduling with preference the I/O process of an upper window. CONSTITUTION:If an instruction is received so as to set a window B, for example, at the highest place, the superposition information is set in order of windows B, C and A. A priority switch instruction means 8 gives an instruction to an I/O driver 10 to give the highest priority to the I/O corresponding to the window B. The driver 10 queues the I/O request received from a process group 9 and connects again the I/O request of the window B designated by the means 8 to the head of the queue. Therefore the I/O requested from the highest window B is processed earliest among those I/O requests given to a peripheral device 12. As a result, the processing speed is increased for the window desired by a user.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an I/O priority determination method in a computer,
I/O especially in computers with multi-window function
Regarding priority determination method.

[Conventional technology]

Conventionally, this type of I/O scheduling has been performed regardless of the overlapping position of the windows.

[Problem to be solved by the invention]

In the above-mentioned I/O priority determination method in conventional computers, I/O priority is determined regardless of the stacked position of windows. Because the window waits for processing by Ilo, it may be slower than the lower window, making it difficult to use.

SUMMARY OF THE INVENTION An object of the present invention is to provide an I/O priority determination method in a computer that can increase the processing speed of windows at the top.

[Means to solve the problem]

I/O priority determination method in a computer of the present invention (A) Overlay information changing means for changing overlay information based on window overlay change instruction information instructed from an input means; (B) Overlay information changing means (C) window content drawing means for outputting drawn image data of display content to be displayed on the window based on a program for drawing on the window; (D> Superposition processing means for performing processing for superimposing and displaying the drawn images of the windows output from the window content drawing means based on the superposition information stored in the superposition information storage means; ( E) priority change instruction means for outputting a priority change instruction signal for instructing a change in the order of the I/O request queue based on the superposition information stored in the superposition information storage means; (F) the above-mentioned An I/O request for queuing I/O requests from a process group and instructing a change in the order of the I/O request queue from the process group based on a priority change instruction signal from the priority switching instruction means. An I/O driver that outputs a queue priority change signal.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

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

The I/O priority determination method in the computer shown in Figure 1 is as follows:
Overlay information changing means 5 that changes overlay information according to window overlay change instruction information instructed by the mouse and keyboard, and overlay information storage means 3 that stores overlay information output from the overlay information changing means 5. ,
Based on the program of the process group 9, the window content drawing means 7 outputs the drawing image data of the display contents displayed on the window 2, and the drawing image of the window 2 is output based on the superposition information stored in the superposition information storage means 3. A superposition processing means 4 performs processing for superimposing and displaying the I/O request queues, and a priority switching instruction means outputs a priority change instruction signal for instructing a change in the order of the I/O request queue based on the superposition information. 8. I/O request queue priority for queuing I/O requests from the process group 9 and instructing to change the order of the I/O request queue based on the priority change instruction signal from the priority switching instruction means 8 It consists of an I/O driver/O that outputs a degree change signal.

Next, the operation will be explained.

When the user specifies a change in the window overlay position using the mouse 13 or the keyboard 6, the overlay information changing means 5 changes the overlay position stored in the overlay information storage means 3 based on the window overlay change instruction information. The overlay information is changed and stored in the overlay information storage means 3.

On the other hand, based on the program of the process group 9, the window content drawing means 7 outputs drawing image data of the display content displayed on the window 2 of the display device 1.

Next, the superimposition processing means 4 executes the superposition information storage means 3.
Based on the superimposition information stored in the window content drawing means 7, processing is performed to display the drawn images of the windows outputted from the window content drawing means 7 in a superimposed manner.

Furthermore, the priority switching instruction means 8 generates a priority change instruction signal for instructing a change in the order of the I/O request queue based on the superposition information stored in the superposition information storage means 3. Output to /O. ■/○Driver/O
queues I/O requests from process group 9,
Based on the priority change instruction signal from the priority change instruction means 8, an I/O request queue priority change signal that instructs to change the order of the I/O request queue from the process group 9 is sent to the I/O request queue.
Output to the O request queue 11, and among the I/O requests in the I/O request queue 11, the last/O request of the window specified by the priority switching instruction means 8 is transferred to the head of the queue.

Here, the cases of windows A, B, and C of the display device 1 in FIG. 1 will be explained.

In Figure 1, the overlay information is for windows C, B, and A.
The order is as follows.

Now, if an instruction is given to place window B at the top, the overlapping information will be in the order of windows B, C, and A. The priority switching instruction means 8 instructs the I/O driver/O to make the priority of Ilo corresponding to the topmost window B the highest priority.

The I/O driver/O queues I/O requests from the process group 9 and stores the I/O requests in the I/O request queue 11.
Among the requests, the I/O request for window B specified by the priority switching instruction means 8 is transferred to the head of the queue. As a result, among the multiple I/O requests to the peripheral device 12, Ilo is requested from the topmost window B.
will be processed the fastest.

〔Effect of the invention〕

As explained above, the present invention preferentially schedules the I/O processing of the window at the top.
This has the effect of increasing the window processing speed required by the user.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention. 1...Display device, 2...Window, 3.
...Overlay information storage means, 4.Overlay processing means, 5.Overlay information changing means, 6.Keyboard, 7.Window content drawing means, 8.Priority switching instruction. means, 9...process group, /O...I/O
Driver, 11... I/O request queue, 12... Peripheral device, 13... Mouse. Agent Patent Attorney Oto Uchihara

Claims (1)

[Scope of Claims] (A) Overlay information changing means for changing overlay information based on window overlay change instruction information instructed from an input means; (B) overlay output from the overlay information changing means; Superimposition information storage means for storing information; (C) window content drawing means for outputting drawing image data of the display content to be displayed on the window based on a program for drawing on the window; (D) the superposition information storage means; (E) superposition processing means for performing processing for superimposing and displaying drawn images of the window output from the window content drawing means based on superposition information stored in an information storage means; (E) the superposition information; priority change instruction means for outputting a priority change instruction signal for instructing a change in the order of the I/O request queue based on the superimposition information stored in the storage means; (F) I/O from the process group; an I/O request queue priority change signal that instructs to change the order of the I/O request queue from the process group based on a priority change instruction signal from the priority change instruction means. An I/O priority determination method in a computer, comprising: an I/O driver that outputs output.