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Man page of ON_EXIT
ON_EXIT
Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
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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);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
on_exit():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_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 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.
RETURN VALUE
The
on_exit()
function returns the value 0 if successful; otherwise
it returns a nonzero value.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
on_exit()
| Thread safety | MT-Safe
|
CONFORMING TO
This function comes from SunOS 4, but is also present in glibc.
It no longer occurs in Solaris (SunOS 5).
Portable application should 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 4.09 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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