gcc/ada/cal.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                   C A L                                  *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2005, Free Software Foundation, Inc.         *
  10  *                                                                          *
  11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  12  * terms of the  GNU General Public License as published  by the Free Soft- *
  13  * ware  Foundation;  either version 2,  or (at your option) any later ver- *
  14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  16  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  17  * for  more details.  You should have  received  a copy of the GNU General *
  18  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  19  * to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, *
  20  * Boston, MA 02110-1301, USA.                                              *
  21  *                                                                          *
  22  * As a  special  exception,  if you  link  this file  with other  files to *
  23  * produce an executable,  this file does not by itself cause the resulting *
  24  * executable to be covered by the GNU General Public License. This except- *
  25  * ion does not  however invalidate  any other reasons  why the  executable *
  26  * file might be covered by the  GNU Public License.                        *
  27  *                                                                          *
  28  * GNAT was originally developed  by the GNAT team at  New York University. *
  29  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  30  *                                                                          *
  31  ****************************************************************************/
  32
  33 /*  This file contains those routines named by Import pragmas in package    */
  34 /*  GNAT.Calendar. It is used to do Duration to timeval conversion.         */
  35 /*  These are simple wrappers function to abstract the fact that the C      */
  36 /*  struct timeval fields type are not normalized (they are generally       */
  37 /*  defined as int or long values).                                         */
  38
  39 #if defined(VMS)
  40
  41 /* this is temporary code to avoid build failure under VMS */
  42
  43 void
  44 __gnat_timeval_to_duration (void *t, long *sec, long *usec)
  45 {
  46 }
  47
  48 void
  49 __gnat_duration_to_timeval (long sec, long usec, void *t)
  50 {
  51 }
  52
  53 #else
  54
  55 #if defined (__vxworks)
  56 #ifdef __RTP__
  57 #include <time.h>
  58 #else
  59 #include <sys/times.h>
  60 #endif
  61 #else
  62 #include <sys/time.h>
  63 #endif
  64
  65 #ifdef __MINGW32__
  66 #include "mingw32.h"
  67 #if STD_MINGW
  68 #include <winsock.h>
  69 #endif
  70 #endif
  71
  72 void
  73 __gnat_timeval_to_duration (struct timeval *t, long *sec, long *usec)
  74 {
  75   *sec  = (long) t->tv_sec;
  76   *usec = (long) t->tv_usec;
  77 }
  78
  79 void
  80 __gnat_duration_to_timeval (long sec, long usec, struct timeval *t)
  81 {
  82   /* here we are doing implicit conversion from a long to the struct timeval
  83      fields types. */
  84
  85   t->tv_sec = sec;
  86   t->tv_usec = usec;
  87 }
  88 #endif
  89
  90 #ifdef __alpha_vxworks
  91 #include "vxWorks.h"
  92 #elif defined (__vxworks)
  93 #include <types/vxTypesOld.h>
  94 #endif
  95
  96 /* Return the value of the "time" C library function.  We always return
  97    a long and do it this way to avoid problems with not knowing
  98    what time_t is on the target.  */
  99
 100 long
 101 gnat_time (void)
 102 {
 103   return time (0);
 104 }