1 #include <u.h>
2 #include <libc.h>
3 
4 static Waitmsg*
5 _wait(int n, char *buf)
6 {
7 	int l;
8 	char *fld[5];
9 	Waitmsg *w;
10 
11 	if(n <= 0)
12 		return nil;
13 	buf[n] = '\0';
14 	if(tokenize(buf, fld, nelem(fld)) != nelem(fld)){
15 		werrstr("couldn't parse wait message");
16 		return nil;
17 	}
18 	l = strlen(fld[4])+1;
19 	w = malloc(sizeof(Waitmsg)+l);
20 	if(w == nil)
21 		return nil;
22 	w->pid = atoi(fld[0]);
23 	w->time[0] = atoi(fld[1]);
24 	w->time[1] = atoi(fld[2]);
25 	w->time[2] = atoi(fld[3]);
26 	w->msg = (char*)&w[1];
27 	memmove(w->msg, fld[4], l);
28 	return w;
29 }
30 
31 Waitmsg*
32 wait(void)
33 {
34 	char buf[256];
35 
36 	return _wait(await(buf, sizeof buf-1), buf);
37 }
38 
39 Waitmsg*
40 waitnohang(void)
41 {
42 	char buf[256];
43 
44 	return _wait(awaitnohang(buf, sizeof buf-1), buf);
45 }
46 
47 Waitmsg*
48 waitfor(int pid)
49 {
50 	char buf[256];
51 
52 	return _wait(awaitfor(pid, buf, sizeof buf-1), buf);
53 }