mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-28 18:10:23 +08:00
dc824ef736
* libc/include/stdlib.h: Add on_exit prototype.
* libc/include/sys/reent.h (struct _atexit): Add argument array
and bits to track type of exit routine to support both on_exit
and atexit.
(_REENT_INIT_PTR): Add missing fields that won't be zeroed out
by default and change the setting of the atexit structure.
(_REENT_INIT)[!_REENT_SMALL]: Remove extraneous end brace.
* libc/stdlib/on_exit.c: New file.
* libc/stdlib/Makefile.am: Add support for on_exit.
* libc/stdlib/Makefile.in: Regenerated.
* libc/stdlib/atexit.c: Change to initialize types field.
* libc/stdlib/exit.c: Change to look at types field for each
exit routine and either call an atexit-style or an on_exit-style
routine accordingly.
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 1990 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* %sccs.include.redist.c%
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<exit>>---end program execution
|
|
|
|
INDEX
|
|
exit
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdlib.h>
|
|
void exit(int <[code]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdlib.h>
|
|
void exit(<[code]>)
|
|
int <[code]>;
|
|
|
|
DESCRIPTION
|
|
Use <<exit>> to return control from a program to the host operating
|
|
environment. Use the argument <[code]> to pass an exit status to the
|
|
operating environment: two particular values, <<EXIT_SUCCESS>> and
|
|
<<EXIT_FAILURE>>, are defined in `<<stdlib.h>>' to indicate success or
|
|
failure in a portable fashion.
|
|
|
|
<<exit>> does two kinds of cleanup before ending execution of your
|
|
program. First, it calls all application-defined cleanup functions
|
|
you have enrolled with <<atexit>>. Second, files and streams are
|
|
cleaned up: any pending output is delivered to the host system, each
|
|
open file or stream is closed, and files created by <<tmpfile>> are
|
|
deleted.
|
|
|
|
RETURNS
|
|
<<exit>> does not return to its caller.
|
|
|
|
PORTABILITY
|
|
ANSI C requires <<exit>>, and specifies that <<EXIT_SUCCESS>> and
|
|
<<EXIT_FAILURE>> must be defined.
|
|
|
|
Supporting OS subroutines required: <<_exit>>.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h> /* for _exit() declaration */
|
|
#include <reent.h>
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
/*
|
|
* Exit, flushing stdio buffers if necessary.
|
|
*/
|
|
|
|
void
|
|
_DEFUN (exit, (code),
|
|
int code)
|
|
{
|
|
register struct _atexit *p;
|
|
register int n;
|
|
int i = 1;
|
|
|
|
#ifdef _REENT_SMALL
|
|
for (p = &_REENT->_atexit, n = p->_ind-1, i = (n>=0) ? (1<<n) : 0;
|
|
n >= 0; --n, i >>= 1)
|
|
#else
|
|
for (p = _REENT->_atexit; p; p = p->_next)
|
|
for (n = p->_ind - 1, i = (n >= 0) ? (1 << n) : 0; n >= 0; --n, i >>= 1)
|
|
#endif
|
|
if (p->_fntypes & i)
|
|
(*((void (*)(int, void *))p->_fns[n]))(code, p->_fnargs[n]);
|
|
else
|
|
(*p->_fns[n]) ();
|
|
|
|
if (_REENT->__cleanup)
|
|
(*_REENT->__cleanup) (_REENT);
|
|
_exit (code);
|
|
}
|
|
|
|
#endif
|