1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/*
* onexit.c
*/
#include <stdlib.h>
#include <unistd.h>
#include "atexit.h"
extern __noreturn(*__exit_handler) (int);
static struct atexit *__atexit_list;
static __noreturn on_exit_exit(int rv)
{
struct atexit *ap;
for (ap = __atexit_list; ap; ap = ap->next) {
ap->fctn(rv, ap->arg); /* This assumes extra args are harmless */
}
_exit(rv);
}
int on_exit(void (*fctn) (int, void *), void *arg)
{
struct atexit *as = malloc(sizeof(struct atexit));
if (!as)
return -1;
as->fctn = fctn;
as->arg = arg;
as->next = __atexit_list;
__atexit_list = as;
__exit_handler = on_exit_exit;
return 0;
}
|
