Name

on_exit — register a function to be called at normal process termination

Synopsis

#include <stdlib.h>
int on_exit( void   (*function)(int, void *),
  void *  arg);
[Note] Note
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
on_exit():
_BSD_SOURCE || _SVID_SOURCE

DESCRIPTION

The on_exit() function registers the given function to be called at normal process termination, whether via exit(3) or via return from the program's main(). The function is passed the argument to exit(3) and the arg argument from on_exit().

RETURN VALUE

The on_exit() function returns the value 0 if successful; otherwise it returns a nonzero value.

CONFORMING TO

This function comes from SunOS 4, but is also present in libc4, libc5 and glibc. It no longer occurs in Solaris (SunOS 5). Avoid this function, and use the standard atexit(3) instead.

SEE ALSO

_exit(2), atexit(3), exit(3)

COLOPHON

This page is part of release 2.79 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


  Copyright 1993 David Metcalfe (davidprism.demon.co.uk)

Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.

Permission is granted to copy and distribute modified versions of this
manual under the conditions for verbatim copying, provided that the
entire resulting derived work is distributed under the terms of a
permission notice identical to this one.

Since the Linux kernel and libraries are constantly changing, this
manual page may be incorrect or out-of-date.  The author(s) assume no
responsibility for errors or omissions, or for damages resulting from
the use of the information contained herein.  The author(s) may not
have taken the same level of care in the production of this manual,
which is licensed free of charge, as they might when working
professionally.

Formatted or processed versions of this manual, if unaccompanied by
the source, must acknowledge the copyright and authors of this work.

References consulted:
    Linux libc source code
    Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
    386BSD man pages
Modified 1993-04-02, David Metcalfe
Modified 1993-07-25, Rik Faith (faithcs.unc.edu)