unwind the stack การใช้

Common Lisp calls the exception handler and does not unwind the stack.
C's setjmp / longjmp are also equivalent : they can only be used to unwind the stack.
When an exception is thrown, the kernel and base libraries unwind the stack running handlers and filters as they are encountered.
So instead of simply exiting with an error, the function may " establish restarts " offering various ways to continue for instance, to skip the log entry, to supply default or null values for the unreadable fields, to ask the user for the missing values, " or " to unwind the stack and abort processing with an error message.