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