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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
ON_EXIT(3) Linux Programmer's Manual ON_EXIT(3)
on_exit - register a function to be called at normal process termina‐
tion
#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
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.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────┼───────────────┼─────────┤
│on_exit() │ Thread safety │ MT-Safe │
└──────────┴───────────────┴─────────┘
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.
_exit(2), atexit(3), exit(3)
This page is part of release 4.12 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/.
GNU 2016-03-15 ON_EXIT(3)
Pages that refer to this page: execve(2), _exit(2), atexit(3), exit(3)