gcc/ada/cal.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                   C A L                                  *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2007, 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) || defined(__nucleus__)
  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 #include <version.h>
  59 #if (_WRS_VXWORKS_MINOR != 0)
  60 #include <sys/time.h>
  61 #endif
  62 #else
  63 #include <sys/times.h>
  64 #endif
  65 #elif defined (__nucleus__)
  66 #include <time.h>
  67 #else
  68 #include <sys/time.h>
  69 #endif
  70
  71 #ifdef __MINGW32__
  72 #include "mingw32.h"
  73 #if STD_MINGW
  74 #include <winsock.h>
  75 #endif
  76 #endif
  77
  78 void
  79 __gnat_timeval_to_duration (struct timeval *t, long *sec, long *usec)
  80 {
  81   *sec  = (long) t->tv_sec;
  82   *usec = (long) t->tv_usec;
  83 }
  84
  85 void
  86 __gnat_duration_to_timeval (long sec, long usec, struct timeval *t)
  87 {
  88   /* here we are doing implicit conversion from a long to the struct timeval
  89      fields types. */
  90
  91   t->tv_sec = sec;
  92   t->tv_usec = usec;
  93 }
  94 #endif
  95
  96 #ifdef __alpha_vxworks
  97 #include "vxWorks.h"
  98 #elif defined (__vxworks)
  99 #include <types/vxTypesOld.h>
 100 #endif
 101
 102 /* Return the value of the "time" C library function.  We always return
 103    a long and do it this way to avoid problems with not knowing
 104    what time_t is on the target.  */
 105
 106 long
 107 gnat_time (void)
 108 {
 109   return time (0);
 110 }