at_quick_exit Subroutine
Purpose
Registers the function that is specified by the func parameter during a call to the quick_exit subroutine.
Library
Standard C library (libc.a)
Syntax
#include <stdlib.h>
int at_quick_exit (void * func (void));
Description
The at_quick_exit subroutine registers the function that is specified by the func parameter that is called without any arguments. If the quick_exit subroutine is called, it calls the registered functions before the exit.
If a call to the at_quick_exit subroutine does not occur before a call to the quick_exit subroutine, the function call is successful.
Parameters
| Item | Description |
|---|---|
| func | Specifies the function that gets registered and that is called during the quick_exit subroutine call. |
Environmental limits
The implementation supports a minimum registration of up to 32 functions.
Return Values
Upon successful completion, the subroutine returns a value of zero, if the registration succeeds.
If unsuccessful, a value of nonzero is returned.
Files
The stdlib.h file defines standard macros, data types, and subroutines.