gcc/ada/cal.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                   C A L                                  *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *                                                                          *
  10  *          Copyright (C) 1992-2001, Free Software Foundation, Inc.         *
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  12  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  13  * terms of the  GNU General Public License as published  by the Free Soft- *
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  15  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
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  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  18  * for  more details.  You should have  received  a copy of the GNU General *
  19  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
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  22  *                                                                          *
  23  * As a  special  exception,  if you  link  this file  with other  files to *
  24  * produce an executable,  this file does not by itself cause the resulting *
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  26  * ion does not  however invalidate  any other reasons  why the  executable *
  27  * file might be covered by the  GNU Public License.                        *
  28  *                                                                          *
  29  * GNAT was originally developed  by the GNAT team at  New York University. *
  30  * It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). *
  31  *                                                                          *
  32  ****************************************************************************/
  33
  34 /*  This file contains those routines named by Import pragmas in package    */
  35 /*  GNAT.Calendar. It is used to to Duration to timeval convertion.         */
  36 /*  These are simple wrappers function to abstarct the fact that the C      */
  37 /*  struct timeval fields type are not normalized (they are generaly        */
  38 /*  defined as int or long values).                                         */
  39
  40 #if defined(VMS)
  41
  42 /* this is temporary code to avoid build failure under VMS */
  43
  44 void
  45 __gnat_timeval_to_duration (void *t, long *sec, long *usec)
  46 {
  47 }
  48
  49 void
  50 __gnat_duration_to_timeval (long sec, long usec, void *t)
  51 {
  52 }
  53
  54 #else
  55
  56 #if defined (__vxworks)
  57 #include <sys/times.h>
  58 #else
  59 #include <sys/time.h>
  60 #endif
  61
  62 void
  63 __gnat_timeval_to_duration (struct timeval *t, long *sec, long *usec)
  64 {
  65   *sec  = (long) t->tv_sec;
  66   *usec = (long) t->tv_usec;
  67 }
  68
  69 void
  70 __gnat_duration_to_timeval (long sec, long usec, struct timeval *t)
  71 {
  72   /* here we are doing implicit convertion from a long to the struct timeval
  73      fields types. */
  74
  75   t->tv_sec = sec;
  76   t->tv_usec = usec;
  77 }
  78 #endif
  79
  80 #ifdef __alpha_vxworks
  81 #include "vxWorks.h"
  82 #elif defined (__vxworks)
  83 #include <types/vxTypesOld.h>
  84 #endif
  85
  86 /* Return the value of the "time" C library function.  We always return
  87    a long and do it this way to avoid problems with not knowing
  88    what time_t is on the target.  */
  89
  90 long
  91 gnat_time ()
  92 {
  93   return time (0);
  94 }