Microprocessor structure capable of implementing control of critical section

Abstract

The present invention relates to a microprocessor structure capable of implementing critical section control, and is characterized by that it uses a instruction temporay memorry to hold the instruction to be executed by microprocessor, and provides a judgement logic unit to control the interrupt request signal line of microprocessor, the judgement logic unit is used to compare the content of the instruction temporary memory with a stored instruction, when the compared result is identical, the interrupt request signal line is closed, it can utilize the interrup service request closure after the holding instruction is executed or before the storage in struction is excecuted to implement control of cirtical section, so that when the holding and storage address are identical, it can implement control of ctritical section, and can implement complete document copying.

Description

technical field [0001] The invention relates to the technical field of microprocessors, in particular to a microprocessor structure capable of realizing critical area control. Background technique [0002] In the conventional microprocessor, a method of controlling the critical section (Critical Section) is usually provided to satisfy the user's control over the use of system resources in a multi-process (Multi-Process) environment, so as to avoid The occurrence of conflicts, and the general method is to use the test and set (Test and Set) method to achieve the control of the critical area, the algorithm is as follows: [0003] bool test-and-set(bool*s){ / / atomic function, [0004] / / can not be [0005] / / interrupted [0006] bool original = s; [0007] s=true; [0008] return original;} [0009] And the usage example of the corresponding terminal is: [0010] while(test-and-set(&sign)); / / if sign is true, [0011] ...

AI Technical Summary

Problems solved by technology

However, this method of providing additional dedicated instructions to achieve control over the use of critical sections will require a larger number of instruction sets for the microprocessor, and even result in the need to use a longer instruction length, and will also increase Due to the complexity and size of microprograms, developers of application programs must use exclusive instructions to control critical regions and manage system resources. Therefore, the control of critical regions used by conventional microprocessors method needs to be improved

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