gcc/ada/cal.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                   C A L                                  *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2009, 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 3,  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.                                     *
  17  *                                                                          *
  18  * As a special exception under Section 7 of GPL version 3, you are granted *
  19  * additional permissions described in the GCC Runtime Library Exception,   *
  20  * version 3.1, as published by the Free Software Foundation.               *
  21  *                                                                          *
  22  * You should have received a copy of the GNU General Public License and    *
  23  * a copy of the GCC Runtime Library Exception along with this program;     *
  24  * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
  25  * <http://www.gnu.org/licenses/>.                                          *
  26  *                                                                          *
  27  * GNAT was originally developed  by the GNAT team at  New York University. *
  28  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  29  *                                                                          *
  30  ****************************************************************************/
  31
  32 /*  This file contains those routines named by Import pragmas in package    */
  33 /*  GNAT.Calendar. It is used to do Duration to timeval conversion.         */
  34 /*  These are simple wrappers function to abstract the fact that the C      */
  35 /*  struct timeval fields type are not normalized (they are generally       */
  36 /*  defined as int or long values).                                         */
  37
  38 #if defined(VMS) || defined(__nucleus__)
  39
  40 /* this is temporary code to avoid build failure under VMS */
  41
  42 void
  43 __gnat_timeval_to_duration (void *t, long *sec, long *usec)
  44 {
  45 }
  46
  47 void
  48 __gnat_duration_to_timeval (long sec, long usec, void *t)
  49 {
  50 }
  51
  52 #else
  53
  54 #if defined (__vxworks)
  55 #ifdef __RTP__
  56 #include <time.h>
  57 #include <version.h>
  58 #if (_WRS_VXWORKS_MINOR != 0)
  59 #include <sys/time.h>
  60 #endif
  61 #else
  62 #include <sys/times.h>
  63 #endif
  64 #elif defined (__nucleus__)
  65 #include <time.h>
  66 #else
  67 #include <sys/time.h>
  68 #endif
  69
  70 #ifdef __MINGW32__
  71 #include "mingw32.h"
  72 #if STD_MINGW
  73 #include <winsock.h>
  74 #endif
  75 #endif
  76
  77 void
  78 __gnat_timeval_to_duration (struct timeval *t, long *sec, long *usec)
  79 {
  80   *sec  = (long) t->tv_sec;
  81   *usec = (long) t->tv_usec;
  82 }
  83
  84 void
  85 __gnat_duration_to_timeval (long sec, long usec, struct timeval *t)
  86 {
  87   /* here we are doing implicit conversion from a long to the struct timeval
  88      fields types. */
  89
  90   t->tv_sec = sec;
  91   t->tv_usec = usec;
  92 }
  93 #endif
  94
  95 #ifdef __alpha_vxworks
  96 #include "vxWorks.h"
  97 #elif defined (__vxworks)
  98 #include <types/vxTypesOld.h>
  99 #endif
 100
 101 /* Return the value of the "time" C library function.  We always return
 102    a long and do it this way to avoid problems with not knowing
 103    what time_t is on the target.  */
 104
 105 long
 106 gnat_time (void)
 107 {
 108   return time (0);
 109 }