l4/pkg/ocaml/ocaml/contrib/otherlibs/unix/gettimeofday.c

   1 /***********************************************************************/
   2 /*                                                                     */
   3 /*                           Objective Caml                            */
   4 /*                                                                     */
   5 /*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         */
   6 /*                                                                     */
   7 /*  Copyright 1996 Institut National de Recherche en Informatique et   */
   8 /*  en Automatique.  All rights reserved.  This file is distributed    */
   9 /*  under the terms of the GNU Library General Public License, with    */
  10 /*  the special exception on linking described in file ../../LICENSE.  */
  11 /*                                                                     */
  12 /***********************************************************************/
  13
  14 /* $Id: gettimeofday.c 6824 2005-03-24 17:20:54Z doligez $ */
  15
  16 #include <mlvalues.h>
  17 #include <alloc.h>
  18 #include <fail.h>
  19 #include "unixsupport.h"
  20
  21 #ifdef HAS_GETTIMEOFDAY
  22
  23 #include <sys/types.h>
  24 #include <sys/time.h>
  25
  26 CAMLprim value unix_gettimeofday(value unit)
  27 {
  28   struct timeval tp;
  29   if (gettimeofday(&tp, NULL) == -1) uerror("gettimeofday", Nothing);
  30   return copy_double((double) tp.tv_sec + (double) tp.tv_usec / 1e6);
  31 }
  32
  33 #else
  34
  35 CAMLprim value unix_gettimeofday(value unit)
  36 { invalid_argument("gettimeofday not implemented"); }
  37
  38 #endif