HP-UX Reference (11i v2 03/08) - 3 Library Functions A-M (vol 6)

atexit(3) atexit(3)

NAME

atexit - register a function to be called at program termination

SYNOPSIS

#include <stdlib.h>

int atexit(void (*func)(void));

DESCRIPTION

atexit() registers the function func to be called, without arguments, at normal program termination.

Functions registered by

atexit() are called in reverse order of registration.

atexit() call during exit processing is always unsuccessful.

The number of registered functions should not exceed

ATEXIT_MAX as speciﬁed in <limits.h>.

When necessary,

crt0() or dld.sl() (see crt0(3) and dld.sl (5)) registers one or more functions with

atexit() to allow some processing at normal program termination. This registration occurs before any

other.

RETURN VALUE

atexit() returns zero if the registration is successful; non-zero if unsuccessful.