Abnormity detecting method and device based on stacks

Abstract

The embodiment of the invention provides an abnormity detecting method and device based on stacks. The method comprises the steps that identification information is generated; the identification information is pressed into the stacks before a first service object presses one or more parameters into the stacks; when calling of a second service object is finished in the one or more parameters in the stacks, current stack top elements located at the tops of the stacks are extracted; whether the stack top elements are the same as the identification information is detected; when the stack top elements are different from the identification information, it is judged that the stacks are abnormal. Based on the principle of transferring the parameters of the stacks, real-time abnormality detection for calling the second service object is achieved, the speed and the accuracy rate for detecting the abnormality of the stacks are increased, and meanwhile the accuracy of abnormality location is improved; moreover, the collapsed parameters can be visually seen in the stacks so that follow-up developers can carry out collapse analysis, and find out the reason for the stack collapse, and the development efficiency is improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a stack-based abnormality detection method and a stack-based abnormality detection device. Background technique [0002] Stack (Stack), also known as stack, is a linear table with limited operations, and its limitation is that only insertion and deletion operations are allowed at one end of the table. [0003] People call this end the top of the stack, the first element on the top of the stack is called the top element, and the other end is called the bottom of the stack. Inserting a new element into a stack is also called pushing or pushing, which is to put the element on top of the top element of the stack to make it a new top element of the stack; deleting an element from a stack is also called popping or unstacking , which deletes the top element of the stack and makes the adjacent element below it the new top element of the stack. [0004] The stack stores information su...

AI Technical Summary

Problems solved by technology

[0006] Since the read is a fixed location, if there is a problem with the stack space, an unexpected value may be manipulated when operating a local variable. If the local variable is a function pointer, it may even cause unexpected code to be executed.

[0007] If there is a problem with the stack space, it will not crash at that time, but it may cause a crash when other business objects manipulate the destroyed local variables, and it is difficult to locate the error location

For example, write data to the address pointed to by a pointer variable, but the variable is destroyed, resulting in an attempt to write data to an unknown area. At this time, it may crash due to writing an unwritable address.

Images