Manpage of ON_EXIT

ON_EXIT

Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
Index
 

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 functionto be called at normal process termination, whether via exit(3) or via return from the program's main(). The functionis passed the status argument given to the last call to exit(3) and the argargument 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).
InterfaceAttributeValue
on_exit() Thread safetyMT-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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
CONFORMING TO
SEE ALSO

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