blob: 7fcf0f3c96947ff010b020e83c86c77a0e1dfba6 (
plain)
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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#include <u.h>
#include <libc.h>
#define NEXIT 33
static Lock onexlock;
static struct
{
void (*f)(void);
int pid;
}onex[NEXIT];
int
atexit(void (*f)(void))
{
int i;
lock(&onexlock);
for(i=0; i<NEXIT; i++)
if(onex[i].f == 0) {
onex[i].pid = getpid();
onex[i].f = f;
unlock(&onexlock);
return 1;
}
unlock(&onexlock);
return 0;
}
void
atexitdont(void (*f)(void))
{
int i, pid;
pid = getpid();
for(i=0; i<NEXIT; i++)
if(onex[i].f == f && onex[i].pid == pid)
onex[i].f = 0;
}
void
exits(char *s)
{
int i, pid;
void (*f)(void);
pid = getpid();
for(i = NEXIT-1; i >= 0; i--)
if((f = onex[i].f) && pid == onex[i].pid) {
onex[i].f = 0;
(*f)();
}
if(s == 0 || *s == 0)
exit(0);
exit(exitcode(s));
}
|