SEH, also known as Structured Exception Handling, is a mechanism used in computer programming languages to detect and handle errors or exceptions during the execution of a program. It is particularly associated with languages like C++ and Microsoft Visual C++.
In SEH, exceptions or errors are classified into various types, such as divide-by-zero, null pointer access, or stack overflow, among others. When an exception occurs, the program transfers control to a specific block of code known as an exception handler, which is responsible for handling the exception and taking appropriate actions.
The SEH mechanism allows programmers to define exception handlers at different levels of granularity, from specific lines of code to encompassing the entire program. This flexibility allows for a more controlled and organized approach to handling exceptions, reducing the likelihood of crashes or unexpected program termination.
SEH mechanisms contain a few key components, such as the try block, which contains the code that may throw exceptions, and the catch block, which specifies the type of exceptions to be caught and the actions to be taken in response. Additionally, SEH supports features like nested exception handling, where exceptions are caught and rethrown at a higher level, and finally block, which is executed regardless of whether an exception occurred or not.
Overall, SEH provides a structured and efficient means to handle exceptions during program execution, promoting reliability and stability in software applications.
