ref: 71a993b4ca2c455f491aad669e3a4ac2979f6bb8
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]); }