Formalized verification method of non-blocking algorithm based on memory recovery scheme

Abstract

The invention discloses a formalized verification method of a non-blocking algorithm based on a memory recovery scheme. Aiming at the memory recovery problem involved in the implementation of the non-blocking algorithm, two solutions, namely a risk pointer scheme based on a pointer and an RCU synchronization mechanism based on a time point, are analyzed, and a formalized model of the non-blocking algorithm applying the memory recovery scheme is established by using a formalized modeling language CIVL-C provided by a CIVL verification framework. The method also comprises analyzing security problems possibly occurring in a non-blocking algorithm at the same time, describing by using the same formalized verification language in combination with functions of a program, integrating a formalized model and properties into the same. cvh file, and performing formalized verification by using a CIVL verification tool; analyzing the correctness, safety and the like of the model according to a result given by a verification tool, namely whether the formalized model meets the property or not; If the verification result is correct, finishing verification, otherwise, modifying the algorithm according to a counter-example path given by the verification tool until verification is completed.

Description

technical field [0001] The invention relates to the field of operating systems, in particular to a formal verification method of a non-blocking algorithm based on a memory recovery scheme. Background technique [0002] With the rapid development of the Internet, software and programs have become more and more complex, and the guarantee of its correctness and security has always been the direction of efforts of the academic and industrial circles. As an important part of the computer and also a key core software system, the behavior of the operating system needs to be strictly and precisely defined and verified. Once a failure occurs, repairing it will affect the whole body. Limited knowledge and manpower cannot cope with this complex situation, so software engineering theory was born, which provides a set of engineering solutions for each cycle of the software development process. method to ensure software quality. However, it is also difficult to ensure that the software ...

AI Technical Summary

Problems solved by technology

However, following the standardized development process is also difficult to ensure that the software is completely error-free, especially in the software testing phase, it is generally difficult to provide complete test cases

Especially in safety-critical systems, it is intolerable

Images