1 #include <u.h>
2 #define NOPLAN9DEFINES
3 #include <libc.h>
4 #include <sys/time.h>
5 #include <sched.h>
6 
7 int
8 p9sleep(long milli)
9 {
10 	struct timeval tv;
11 
12 	if(milli == 0){
13 		sched_yield();
14 		return 0;
15 	}
16 
17 	tv.tv_sec = milli/1000;
18 	tv.tv_usec = (milli%1000)*1000;
19 	return select(0, 0, 0, 0, &tv);
20 }
21 
22 long
23 p9alarm(ulong milli)
24 {
25 	struct itimerval itv;
26 	struct itimerval oitv;
27 
28 	itv.it_interval.tv_sec = 0;
29 	itv.it_interval.tv_usec = 0;
30 	itv.it_value.tv_sec = milli/1000;
31 	itv.it_value.tv_usec = (milli%1000)*1000;
32 	if(setitimer(ITIMER_REAL, &itv, &oitv) < 0)
33 		return -1;
34 	return oitv.it_value.tv_sec*1000+oitv.it_value.tv_usec/1000;
35 }