1995-08-09 08:06:35 -07:00
|
|
|
/***********************************************************************/
|
|
|
|
|
/* */
|
|
|
|
|
/* Caml Special Light */
|
|
|
|
|
/* */
|
|
|
|
|
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
|
|
|
|
|
/* */
|
|
|
|
|
/* Copyright 1995 Institut National de Recherche en Informatique et */
|
|
|
|
|
/* Automatique. Distributed only by permission. */
|
|
|
|
|
/* */
|
|
|
|
|
/***********************************************************************/
|
|
|
|
|
|
|
|
|
|
/* $Id$ */
|
|
|
|
|
|
1995-05-08 08:18:32 -07:00
|
|
|
#include <mlvalues.h>
|
|
|
|
|
#include <alloc.h>
|
|
|
|
|
#include <memory.h>
|
|
|
|
|
#include "unix.h"
|
|
|
|
|
|
|
|
|
|
value unix_wait() /* ML */
|
|
|
|
|
{
|
|
|
|
|
value res;
|
|
|
|
|
int pid, status;
|
|
|
|
|
Push_roots(r, 1);
|
|
|
|
|
#define st r[0]
|
|
|
|
|
pid = wait(&status);
|
|
|
|
|
if (pid == -1) uerror("wait", Nothing);
|
|
|
|
|
switch (status & 0xFF) {
|
|
|
|
|
case 0:
|
|
|
|
|
st = alloc(1, 0);
|
|
|
|
|
Field(st, 0) = Val_int((status >> 8) & 0xFF);
|
|
|
|
|
break;
|
|
|
|
|
case 0177:
|
|
|
|
|
st = alloc(1, 2);
|
|
|
|
|
Field(st, 0) = Val_int((status >> 8) & 0xFF);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
st = alloc(2, 1);
|
|
|
|
|
Field(st, 0) = Val_int(status & 0x3F);
|
|
|
|
|
Field(st, 1) = status & 0200 ? Val_true : Val_false;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
res = alloc_tuple(2);
|
|
|
|
|
Field(res, 0) = Val_int(pid);
|
|
|
|
|
Field(res, 1) = st;
|
|
|
|
|
Pop_roots();
|
|
|
|
|
return res;
|
|
|
|
|
}
|
|
|
|
|
|
