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/* Copyright (C) 1995,1996 Robert de Bath <rdebath@cix.compulink.co.uk>
* This file is part of the Linux-8086 C library and is distributed
* under the GNU Library General Public License.
*/
/*
* Manuel Novoa III Dec 2000
*
* Modifications:
* Made atexit handling conform to standards... i.e. no args.
* Removed on_exit since it did not match gnu libc definition.
* Combined atexit and __do_exit into one object file.
*/
#include <errno.h>
/* ATEXIT.H */
/*
* NOTE!!! The following should match the value returned by
* by sysconf(_SC_ATEXIT_MAX) in unistd/sysconf.c
*/
#define MAXATEXIT 20 /* AIUI Posix requires 10 */
typedef void (*vfuncp) (void);
extern vfuncp __cleanup;
extern void __do_exit();
extern void _exit __P((int __status)) __attribute__ ((__noreturn__));
extern vfuncp __atexit_table[MAXATEXIT];
extern int __atexit_count;
/* End ATEXIT.H */
#ifdef L_atexit
int atexit(vfuncp ptr)
{
if ((__atexit_count < 0) || (__atexit_count >= MAXATEXIT)) {
errno = ENOMEM;
return -1;
}
if (ptr) {
__cleanup = __do_exit;
__atexit_table[__atexit_count++] = ptr;
}
return 0;
}
vfuncp __atexit_table[MAXATEXIT];
int __atexit_count = 0;
void __do_exit(int rv)
{
int count = __atexit_count - 1;
__atexit_count = -1; /* ensure no more will be added */
__cleanup = 0; /* Calling exit won't re-do this */
/* In reverse order */
for (; count >= 0; count--) {
(*__atexit_table[count])();
}
}
#endif
#ifdef L_exit
void __stdio_close_all(void); /* note: see _start.S - could be faked */
vfuncp __cleanup = 0;
void exit(int rv)
{
if (__cleanup)
__cleanup();
__stdio_close_all();
_exit(rv);
}
#endif
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