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	wait.c - 9base - revived minimalist port of Plan 9 userland to Unix
	git clone git://git.suckless.org/9base
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	---
	wait.c (813B)
	---
	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 }
	54