ref: 5eec707368a91687c5e8ff7941ab6df5bf9e7fa3
dir: /sys/src/libc/9sys/waitpid.c/
#include <u.h>
#include <libc.h>
#include <fcall.h>
int
waitpid(void)
{
int n;
char buf[512], *fld[5];
n = await(buf, sizeof buf-1);
if(n <= 0)
return -1;
buf[n] = '\0';
if(tokenize(buf, fld, nelem(fld)) != nelem(fld)){
werrstr("couldn't parse wait message");
return -1;
}
return atoi(fld[0]);
}