JPH03137729A - Advanced control system - Google Patents

Abstract

PURPOSE:To shorten an execution time when an application program is restored from an interruption processing by providing an interruption detection means, an instruction buffer switching control means, an instruction buffer selection means, an interruption processing termination detection means and the like. CONSTITUTION:When the interruption detection means 5 detects interruption while the instruction of the application program 3 which is take into an applica tion instruction buffer 4 is executed, the means informs to the instruction buffer switching control means 6 of the detected interruption. The means 6 informs the instruction buffer selection means 7 of instruction buffer selection informa tion and the means 7 switches to an interruption processing instruction buffer 8 based on input information. Then, the interruption processing is executed by using the buffer 8. When the interruption processing terminates, the interrup tion processing termination detection means 9 detects the termination of the interruption processing and informs the means 6 of it. The means 6 informs the means 7 of instruction buffer selection information showing switching to the buffer 4 which is used immediately before interruption. Thus, the program 3 switched to the buffer 4 is executed and the restoration time of the program is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to advance control of instruction execution, and particularly to a advance control method when an interrupt occurs.

[Conventional technology]

Conventionally, the preemptive control method operates with a single-level instruction buffer, and after an interrupt occurs and the interrupt processing is executed, prefetching is performed in the instruction buffer when executing a process (such as an application program) after returning from the interrupt processing. The command was deleted and the command was reloaded into the command buffer.

[Problem to be solved by the invention]

The above-mentioned conventional advance control method has the disadvantage that the instruction that was prefetched just before the interrupt occurs is erased and then fetched again after the interrupt processing, so the same operation is repeated twice, which takes time.

[Means to solve the problem]

The advance control method of the present invention includes: an interrupt detection means for detecting an interrupt during execution of an application program; an instruction buffer switching control means for controlling switching of an instruction buffer in response to an interrupt detected by the interrupt detection means; Multiple instruction buffers are selected based on instruction buffer selection information instructed by the buffer switching control means.
an instruction buffer selection means for selecting which of the sofas to use; and an interrupt processing for detecting the end of interrupt processing and notifying the instruction buffer switching control means to switch to the instruction buffer used immediately before the interrupt. and end detection means.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. In the same figure, the advance control method is based on the main storage unit 1. Operating system 2. Application program 3. Application instruction buffer 4, interrupt detection means 5. Instruction buffer switching control means 6. Instruction buffer selection means 71
It consists of an interrupt processing instruction buffer 81 and an interrupt processing completion detection means 9.

An operating system 2 and application programs 3 are developed on the main storage unit 1 . Further, some instructions of the application program 3 are taken into the application instruction buffer 4. Interrupt detection means 5 detects an interrupt while executing an instruction loaded in application instruction buffer 4, and notifies instruction buffer switching control means 6.

Upon receiving the interrupt detection notification, the instruction buffer switching control means 6 notifies the instruction buffer selection means 7 of instruction buffer selection information indicating which instruction buffer to switch to. The instruction buffer selection means 7 is the instruction buffer switching control means 6.
0 interrupt processing is executed using the interrupt processing instruction buffer 8, which is switched to the interrupt processing instruction buffer 6 based on the instruction buffer selection information notified from the interrupt processing instruction buffer 6.

When the interrupt processing ends, the interrupt processing end detection means 9 detects the end of the interrupt processing and notifies the instruction buffer switching control means 6. The instruction buffer switching control means 6 notifies the instruction buffer selection means 7 of instruction buffer selection information indicating switching to the instruction buffer used immediately before the interrupt. The instruction buffer selection means 7 switches to the original application instruction buffer 4 based on the instruction buffer selection information notified from the instruction buffer switching control means 6, and executes the application program 3 after the occurrence of the interrupt.

〔Effect of the invention〕

As explained above, the present invention switches the instruction buffer when an interrupt occurs during execution of an application program, thereby shortening the execution time when the application program returns from interrupt processing, and improving system performance as a result. It has the effect of

6... Instruction buffer switching control means, 7... Instruction buffer selection means, 8... Interrupt processing instruction buffer, 9... Interrupt processing end detection means.

Claims (1)

[Claims] an interrupt detection means for detecting an interrupt during execution of an application program; an instruction buffer switching control means for controlling instruction buffer switching in response to an interrupt detected by the interrupt detection means; an instruction buffer selection means for selecting which of a plurality of instruction buffers to use based on instruction buffer selection information; and an instruction buffer selection means for detecting the end of interrupt processing and switching to the instruction buffer used immediately before the interrupt; 1. A proactive control method comprising interrupt processing end detection means for notifying buffer switching control means.