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------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- D E C . I O --
-- --
-- B o d y --
-- --
-- Copyright (C) 2001 Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This is an AlphaVMS package that provides the interface between
-- GNAT, DECLib IO packages and the DECLib Bliss library.
pragma Extend_System (Aux_DEC);
with System; use System;
with System.Task_Primitives; use System.Task_Primitives;
with System.Task_Primitives.Operations; use System.Task_Primitives.Operations;
with IO_Exceptions; use IO_Exceptions;
with Aux_IO_Exceptions; use Aux_IO_Exceptions;
package body DEC.IO is
type File_Type is record
FCB : Integer := 0; -- Temporary
SEQ : Integer := 0;
end record;
for File_Type'Size use 64;
for File_Type'Alignment use 8;
for File_Type use record
FCB at 0 range 0 .. 31;
SEQ at 4 range 0 .. 31;
end record;
-----------------------
-- Local Subprograms --
-----------------------
function GNAT_Name_64 (File : File_Type) return String;
pragma Export_Function (GNAT_Name_64, "GNAT$NAME_64");
-- ??? comment
function GNAT_Form_64 (File : File_Type) return String;
pragma Export_Function (GNAT_Form_64, "GNAT$FORM_64");
-- ??? comment
procedure Init_IO;
pragma Interface (C, Init_IO);
pragma Import_Procedure (Init_IO, "GNAT$$INIT_IO");
-- ??? comment
----------------
-- IO_Locking --
----------------
package body IO_Locking is
------------------
-- Create_Mutex --
------------------
function Create_Mutex return Access_Mutex is
M : constant Access_Mutex := new RTS_Lock;
begin
Initialize_Lock (M, Global_Task_Level);
return M;
end Create_Mutex;
-------------
-- Acquire --
-------------
procedure Acquire (M : Access_Mutex) is
begin
Write_Lock (M);
end Acquire;
-------------
-- Release --
-------------
procedure Release (M : Access_Mutex) is
begin
Unlock (M);
end Release;
end IO_Locking;
------------------
-- GNAT_Name_64 --
------------------
function GNAT_Name_64 (File : File_Type) return String is
subtype Buffer_Subtype is String (1 .. 8192);
Buffer : Buffer_Subtype;
Length : System.Integer_32;
procedure Get_Name
(File : System.Address;
MaxLen : System.Integer_32;
Buffer : out Buffer_Subtype;
Length : out System.Integer_32);
pragma Interface (C, Get_Name);
pragma Import_Procedure
(Get_Name, "GNAT$FILE_NAME",
Mechanism => (Value, Value, Reference, Reference));
begin
Get_Name (File'Address, Buffer'Length, Buffer, Length);
return Buffer (1 .. Integer (Length));
end GNAT_Name_64;
------------------
-- GNAT_Form_64 --
------------------
function GNAT_Form_64 (File : File_Type) return String is
subtype Buffer_Subtype is String (1 .. 8192);
Buffer : Buffer_Subtype;
Length : System.Integer_32;
procedure Get_Form
(File : System.Address;
MaxLen : System.Integer_32;
Buffer : out Buffer_Subtype;
Length : out System.Integer_32);
pragma Interface (C, Get_Form);
pragma Import_Procedure
(Get_Form, "GNAT$FILE_FORM",
Mechanism => (Value, Value, Reference, Reference));
begin
Get_Form (File'Address, Buffer'Length, Buffer, Length);
return Buffer (1 .. Integer (Length));
end GNAT_Form_64;
------------------------
-- Raise_IO_Exception --
------------------------
procedure Raise_IO_Exception (EN : Exception_Number) is
begin
case EN is
when GNAT_EN_LOCK_ERROR => raise LOCK_ERROR;
when GNAT_EN_EXISTENCE_ERROR => raise EXISTENCE_ERROR;
when GNAT_EN_KEY_ERROR => raise KEY_ERROR;
when GNAT_EN_KEYSIZERR => raise PROGRAM_ERROR; -- KEYSIZERR;
when GNAT_EN_STAOVF => raise STORAGE_ERROR; -- STAOVF;
when GNAT_EN_CONSTRAINT_ERRO => raise CONSTRAINT_ERROR;
when GNAT_EN_IOSYSFAILED => raise DEVICE_ERROR; -- IOSYSFAILED;
when GNAT_EN_LAYOUT_ERROR => raise LAYOUT_ERROR;
when GNAT_EN_STORAGE_ERROR => raise STORAGE_ERROR;
when GNAT_EN_DATA_ERROR => raise DATA_ERROR;
when GNAT_EN_DEVICE_ERROR => raise DEVICE_ERROR;
when GNAT_EN_END_ERROR => raise END_ERROR;
when GNAT_EN_MODE_ERROR => raise MODE_ERROR;
when GNAT_EN_NAME_ERROR => raise NAME_ERROR;
when GNAT_EN_STATUS_ERROR => raise STATUS_ERROR;
when GNAT_EN_NOT_OPEN => raise USE_ERROR; -- NOT_OPEN;
when GNAT_EN_ALREADY_OPEN => raise USE_ERROR; -- ALREADY_OPEN;
when GNAT_EN_USE_ERROR => raise USE_ERROR;
when GNAT_EN_UNSUPPORTED => raise USE_ERROR; -- UNSUPPORTED;
when GNAT_EN_FAC_MODE_MISMAT => raise USE_ERROR; -- FAC_MODE_MISMAT;
when GNAT_EN_ORG_MISMATCH => raise USE_ERROR; -- ORG_MISMATCH;
when GNAT_EN_RFM_MISMATCH => raise USE_ERROR; -- RFM_MISMATCH;
when GNAT_EN_RAT_MISMATCH => raise USE_ERROR; -- RAT_MISMATCH;
when GNAT_EN_MRS_MISMATCH => raise USE_ERROR; -- MRS_MISMATCH;
when GNAT_EN_MRN_MISMATCH => raise USE_ERROR; -- MRN_MISMATCH;
when GNAT_EN_KEY_MISMATCH => raise USE_ERROR; -- KEY_MISMATCH;
when GNAT_EN_MAXLINEXC => raise CONSTRAINT_ERROR; -- MAXLINEXC;
when GNAT_EN_LINEXCMRS => raise CONSTRAINT_ERROR; -- LINEXCMRS;
end case;
end Raise_IO_Exception;
-------------------------
-- Package Elaboration --
-------------------------
begin
Init_IO;
end DEC.IO;
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