| NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | SEE ALSO | COLOPHON | The Linux Programming Interface |
ON_EXIT(3) Linux Programmer's Manual ON_EXIT(3)
on_exit - register a function to be called at normal process termination
#include <stdlib.h>
int on_exit(void (*function)(int , void *), void *arg);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
on_exit(): _BSD_SOURCE || _SVID_SOURCE
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 status argument given to the last call to
exit(3) and the arg argument from on_exit().
The same function may be registered multiple times: it is called once for each
registration.
When a child process is created via fork(2), it inherits copies of its
parent's registrations. Upon a successful call to one of the exec(3)
functions, all registrations are removed.
The on_exit() function returns the value 0 if successful; otherwise it returns
a nonzero value.
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.
_exit(2), atexit(3), exit(3)
This page is part of release 3.32 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/.
GNU 2008-12-05 ON_EXIT(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface