NAME
atexit —
register a function to be
called on exit
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
atexit(
void
(*function)(void));
DESCRIPTION
The
atexit() function registers the given
function to be called at program exit, whether via
exit(3) or via return from the
program's
main. Functions so registered are called in
reverse order; no arguments are passed. At least 32 functions can always be
registered, and more are allowed as long as sufficient memory can be
allocated.
RETURN VALUES
The
atexit() function returns the value 0 if successful;
otherwise the value -1 is returned and the global variable
errno is set to indicate the error.
ERRORS
-
-
- [
ENOMEM
]
- No memory was available to add the function to the list.
The existing list of functions is unmodified.
SEE ALSO
at_quick_exit(3),
exit(3),
quick_exit(3)
STANDARDS
The
atexit() function conforms to
ANSI
X3.159-1989 (“ANSI C89”).