gcc/ada/dec-io.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                               D E C . I O                                --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1996-2001 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,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This is an AlphaVMS package that contains the declarations and
  35 --  function specifications needed by the DECLib IO packages.
  36
  37 with System.Task_Primitives;
  38 package DEC.IO is
  39 private
  40
  41    type Exception_Number is (
  42      GNAT_EN_LOCK_ERROR,
  43      GNAT_EN_EXISTENCE_ERROR,
  44      GNAT_EN_KEY_ERROR,
  45      GNAT_EN_KEYSIZERR,
  46      GNAT_EN_STAOVF,
  47      GNAT_EN_CONSTRAINT_ERRO,
  48      GNAT_EN_IOSYSFAILED,
  49      GNAT_EN_LAYOUT_ERROR,
  50      GNAT_EN_STORAGE_ERROR,
  51      GNAT_EN_DATA_ERROR,
  52      GNAT_EN_DEVICE_ERROR,
  53      GNAT_EN_END_ERROR,
  54      GNAT_EN_MODE_ERROR,
  55      GNAT_EN_NAME_ERROR,
  56      GNAT_EN_STATUS_ERROR,
  57      GNAT_EN_NOT_OPEN,
  58      GNAT_EN_ALREADY_OPEN,
  59      GNAT_EN_USE_ERROR,
  60      GNAT_EN_UNSUPPORTED,
  61      GNAT_EN_FAC_MODE_MISMAT,
  62      GNAT_EN_ORG_MISMATCH,
  63      GNAT_EN_RFM_MISMATCH,
  64      GNAT_EN_RAT_MISMATCH,
  65      GNAT_EN_MRS_MISMATCH,
  66      GNAT_EN_MRN_MISMATCH,
  67      GNAT_EN_KEY_MISMATCH,
  68      GNAT_EN_MAXLINEXC,
  69      GNAT_EN_LINEXCMRS);
  70
  71    for Exception_Number'Size use 32;
  72
  73    for Exception_Number use (
  74      GNAT_EN_LOCK_ERROR => 1,
  75      GNAT_EN_EXISTENCE_ERROR => 2,
  76      GNAT_EN_KEY_ERROR => 3,
  77      GNAT_EN_KEYSIZERR => 4,
  78      GNAT_EN_STAOVF => 5,
  79      GNAT_EN_CONSTRAINT_ERRO => 6,
  80      GNAT_EN_IOSYSFAILED => 7,
  81      GNAT_EN_LAYOUT_ERROR => 8,
  82      GNAT_EN_STORAGE_ERROR => 9,
  83      GNAT_EN_DATA_ERROR => 10,
  84      GNAT_EN_DEVICE_ERROR => 11,
  85      GNAT_EN_END_ERROR => 12,
  86      GNAT_EN_MODE_ERROR => 13,
  87      GNAT_EN_NAME_ERROR => 14,
  88      GNAT_EN_STATUS_ERROR => 15,
  89      GNAT_EN_NOT_OPEN => 16,
  90      GNAT_EN_ALREADY_OPEN => 17,
  91      GNAT_EN_USE_ERROR => 18,
  92      GNAT_EN_UNSUPPORTED => 19,
  93      GNAT_EN_FAC_MODE_MISMAT => 20,
  94      GNAT_EN_ORG_MISMATCH => 21,
  95      GNAT_EN_RFM_MISMATCH => 22,
  96      GNAT_EN_RAT_MISMATCH => 23,
  97      GNAT_EN_MRS_MISMATCH => 24,
  98      GNAT_EN_MRN_MISMATCH => 25,
  99      GNAT_EN_KEY_MISMATCH => 26,
 100      GNAT_EN_MAXLINEXC => 27,
 101      GNAT_EN_LINEXCMRS => 28);
 102
 103    procedure Raise_IO_Exception (EN : Exception_Number);
 104    pragma Export_Procedure (Raise_IO_Exception, "GNAT$RAISE_IO_EXCEPTION",
 105       Mechanism => Value);
 106
 107    package IO_Locking is
 108       type Access_Mutex is private;
 109       function Create_Mutex return Access_Mutex;
 110       procedure Acquire (M : Access_Mutex);
 111       procedure Release (M : Access_Mutex);
 112
 113    private
 114       type Access_Mutex is access System.Task_Primitives.RTS_Lock;
 115       pragma Export_Function (Create_Mutex, "GNAT$CREATE_MUTEX",
 116           Mechanism => Value);
 117       pragma Export_Procedure (Acquire, "GNAT$ACQUIRE_MUTEX",
 118           Mechanism => Value);
 119       pragma Export_Procedure (Release, "GNAT$RELEASE_MUTEX",
 120           Mechanism => Value);
 121    end IO_Locking;
 122
 123 end DEC.IO;