New file.
From-SVN: r135709
This commit is contained in:
Thomas Quinot
Arnaud Charlet
parent
765f7c95f2
commit
92c708d23c
@ -1,3 +1,7 @@
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2008-05-21 Thomas Quinot <quinot@adacore.com>
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* g-sothco.ads, g-sothco.adb: New files.
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2008-05-20 Thomas Quinot <quinot@adacore.com>
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* Makefile.rtl (GNAT.Sockets.Thin_Common): New unit.
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79
gcc/ada/g-sothco.adb
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79
gcc/ada/g-sothco.adb
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@ -0,0 +1,79 @@
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------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- G N A T . S O C K E T S . T H I N _ C O M M O N --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2008, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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package body GNAT.Sockets.Thin_Common is
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-----------------
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-- Set_Address --
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-----------------
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procedure Set_Address
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(Sin : Sockaddr_In_Access;
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Address : In_Addr)
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is
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begin
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Sin.Sin_Addr := Address;
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end Set_Address;
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----------------
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-- Set_Family --
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----------------
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procedure Set_Family
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(Length_And_Family : out Sockaddr_Length_And_Family;
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Family : Family_Type)
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is
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C_Family : C.int renames Families (Family);
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Has_Sockaddr_Len : constant Boolean := Constants.Has_Sockaddr_Len /= 0;
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begin
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if Has_Sockaddr_Len then
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Length_And_Family.Length := Lengths (Family);
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Length_And_Family.Char_Family := C.unsigned_char (C_Family);
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else
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Length_And_Family.Short_Family := C.unsigned_short (C_Family);
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end if;
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end Set_Family;
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--------------
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-- Set_Port --
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--------------
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procedure Set_Port
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(Sin : Sockaddr_In_Access;
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Port : C.unsigned_short)
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is
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begin
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Sin.Sin_Port := Port;
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end Set_Port;
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end GNAT.Sockets.Thin_Common;
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326
gcc/ada/g-sothco.ads
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326
gcc/ada/g-sothco.ads
Normal file
@ -0,0 +1,326 @@
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------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- G N A T . S O C K E T S . T H I N _ C O M M O N --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2008, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This is the target-independent part of the thin sockets mapping.
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-- This package should not be directly with'ed by an applications program.
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with Ada.Unchecked_Conversion;
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with Interfaces.C;
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with Interfaces.C.Pointers;
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with Interfaces.C.Strings;
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with GNAT.Sockets.Constants;
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package GNAT.Sockets.Thin_Common is
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package C renames Interfaces.C;
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use type C.int;
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-- This is so we can declare the Failure constant below
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Success : constant C.int := 0;
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Failure : constant C.int := -1;
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type time_t is
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range -2 ** (8 * Constants.SIZEOF_tv_sec - 1)
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.. 2 ** (8 * Constants.SIZEOF_tv_sec - 1) - 1;
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for time_t'Size use 8 * Constants.SIZEOF_tv_sec;
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pragma Convention (C, time_t);
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type suseconds_t is
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range -2 ** (8 * Constants.SIZEOF_tv_usec - 1)
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.. 2 ** (8 * Constants.SIZEOF_tv_usec - 1) - 1;
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for suseconds_t'Size use 8 * Constants.SIZEOF_tv_usec;
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pragma Convention (C, suseconds_t);
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type Timeval is record
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Tv_Sec : time_t;
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Tv_Usec : suseconds_t;
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end record;
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pragma Convention (C, Timeval);
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type Timeval_Access is access all Timeval;
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pragma Convention (C, Timeval_Access);
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Immediat : constant Timeval := (0, 0);
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-------------------------------------------
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-- Mapping tables to low level constants --
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-------------------------------------------
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Families : constant array (Family_Type) of C.int :=
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(Family_Inet => Constants.AF_INET,
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Family_Inet6 => Constants.AF_INET6);
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Lengths : constant array (Family_Type) of C.unsigned_char :=
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(Family_Inet => Constants.SIZEOF_sockaddr_in,
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Family_Inet6 => Constants.SIZEOF_sockaddr_in6);
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----------------------------
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-- Generic socket address --
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----------------------------
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-- Common header
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-- All socket address types (struct sockaddr, struct sockaddr_storage,
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-- and protocol specific address types) start with the same 2-byte header,
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-- which is either a length and a family (one byte each) or just a two-byte
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-- family. The following unchecked union describes the two possible layouts
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-- and is meant to be constrained with Constants.Have_Sockaddr_Len.
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type Sockaddr_Length_And_Family
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(Has_Sockaddr_Len : Boolean := False)
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is record
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case Has_Sockaddr_Len is
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when True =>
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Length : C.unsigned_char;
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Char_Family : C.unsigned_char;
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when False =>
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Short_Family : C.unsigned_short;
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end case;
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end record;
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pragma Unchecked_Union (Sockaddr_Length_And_Family);
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pragma Convention (C, Sockaddr_Length_And_Family);
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procedure Set_Family
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(Length_And_Family : out Sockaddr_Length_And_Family;
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Family : Family_Type);
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-- Set the family component to the appropriate value for Family, and also
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-- set Length accordingly if applicable on this platform.
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type Sockaddr is record
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Sa_Family : Sockaddr_Length_And_Family;
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-- Address family (and address length on some platforms)
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Sa_Data : C.char_array (1 .. 14) := (others => C.nul);
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-- Family-specific data
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-- Note that some platforms require that all unused (reserved) bytes
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-- in addresses be initialized to 0 (e.g. VxWorks).
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end record;
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pragma Convention (C, Sockaddr);
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-- Generic socket address
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type Sockaddr_Access is access all Sockaddr;
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pragma Convention (C, Sockaddr_Access);
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-- Access to socket address
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----------------------------
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-- AF_INET socket address --
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----------------------------
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type In_Addr is record
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S_B1, S_B2, S_B3, S_B4 : C.unsigned_char;
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end record;
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for In_Addr'Alignment use C.int'Alignment;
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pragma Convention (C, In_Addr);
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-- IPv4 address, represented as a network-order C.int. Note that the
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-- underlying operating system may assume that values of this type have
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-- C.int alignment, so we need to provide a suitable alignment clause here.
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function To_In_Addr is new Ada.Unchecked_Conversion (C.int, In_Addr);
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function To_Int is new Ada.Unchecked_Conversion (In_Addr, C.int);
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type In_Addr_Access is access all In_Addr;
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pragma Convention (C, In_Addr_Access);
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-- Access to internet address
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Inaddr_Any : aliased constant In_Addr := (others => 0);
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-- Any internet address (all the interfaces)
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type In_Addr_Access_Array is array (C.size_t range <>)
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of aliased In_Addr_Access;
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pragma Convention (C, In_Addr_Access_Array);
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package In_Addr_Access_Pointers is new C.Pointers
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(C.size_t, In_Addr_Access, In_Addr_Access_Array, null);
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-- Array of internet addresses
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type Sockaddr_In is record
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Sin_Family : Sockaddr_Length_And_Family;
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-- Address family (and address length on some platforms)
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Sin_Port : C.unsigned_short;
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-- Port in network byte order
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Sin_Addr : In_Addr;
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-- IPv4 address
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Sin_Zero : C.char_array (1 .. 8) := (others => C.nul);
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-- Padding
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-- Note that some platforms require that all unused (reserved) bytes
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-- in addresses be initialized to 0 (e.g. VxWorks).
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end record;
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pragma Convention (C, Sockaddr_In);
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-- Internet socket address
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type Sockaddr_In_Access is access all Sockaddr_In;
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pragma Convention (C, Sockaddr_In_Access);
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-- Access to internet socket address
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procedure Set_Port
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(Sin : Sockaddr_In_Access;
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Port : C.unsigned_short);
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pragma Inline (Set_Port);
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-- Set Sin.Sin_Port to Port
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procedure Set_Address
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(Sin : Sockaddr_In_Access;
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Address : In_Addr);
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pragma Inline (Set_Address);
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-- Set Sin.Sin_Addr to Address
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---------------------
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-- Service entries --
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---------------------
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type Chars_Ptr_Array is array (C.size_t range <>) of
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aliased C.Strings.chars_ptr;
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package Chars_Ptr_Pointers is
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new C.Pointers (C.size_t, C.Strings.chars_ptr, Chars_Ptr_Array,
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C.Strings.Null_Ptr);
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-- Arrays of C (char *)
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type Servent is record
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S_Name : C.Strings.chars_ptr;
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S_Aliases : Chars_Ptr_Pointers.Pointer;
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S_Port : C.int;
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S_Proto : C.Strings.chars_ptr;
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end record;
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pragma Convention (C, Servent);
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-- Service entry
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type Servent_Access is access all Servent;
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pragma Convention (C, Servent_Access);
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-- Access to service entry
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------------------
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-- Host entries --
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------------------
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type Hostent is record
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H_Name : C.Strings.chars_ptr;
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H_Aliases : Chars_Ptr_Pointers.Pointer;
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H_Addrtype : Constants.H_Addrtype_T;
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H_Length : Constants.H_Length_T;
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H_Addr_List : In_Addr_Access_Pointers.Pointer;
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end record;
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pragma Convention (C, Hostent);
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-- Host entry
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type Hostent_Access is access all Hostent;
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pragma Convention (C, Hostent_Access);
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-- Access to host entry
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----------------------------
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-- Socket sets management --
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----------------------------
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type Int_Access is access all C.int;
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pragma Convention (C, Int_Access);
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-- Access to C integers
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procedure Free_Socket_Set (Set : Fd_Set_Access);
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-- Free system-dependent socket set
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procedure Get_Socket_From_Set
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(Set : Fd_Set_Access;
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Socket : Int_Access;
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Last : Int_Access);
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-- Get last socket in Socket and remove it from the socket set. The
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-- parameter Last is a maximum value of the largest socket. This hint is
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-- used to avoid scanning very large socket sets. After a call to
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-- Get_Socket_From_Set, Last is set back to the real largest socket in the
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-- socket set.
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procedure Insert_Socket_In_Set
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(Set : Fd_Set_Access;
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Socket : C.int);
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-- Insert socket in the socket set
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function Is_Socket_In_Set
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(Set : Fd_Set_Access;
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Socket : C.int) return C.int;
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-- Check whether Socket is in the socket set, return a non-zero
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-- value if it is, zero if it is not.
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procedure Last_Socket_In_Set
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(Set : Fd_Set_Access;
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Last : Int_Access);
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-- Find the largest socket in the socket set. This is needed for select().
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-- When Last_Socket_In_Set is called, parameter Last is a maximum value of
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-- the largest socket. This hint is used to avoid scanning very large
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-- socket sets. After the call, Last is set back to the real largest socket
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-- in the socket set.
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function New_Socket_Set
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(Set : Fd_Set_Access) return Fd_Set_Access;
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-- Allocate a new socket set which is a system-dependent structure and
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-- initialize by copying Set if it is non-null, by making it empty
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-- otherwise.
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procedure Remove_Socket_From_Set
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(Set : Fd_Set_Access;
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Socket : C.int);
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-- Remove socket from the socket set
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------------------------------------------
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-- Pairs of signalling file descriptors --
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------------------------------------------
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type Two_Ints is array (0 .. 1) of C.int;
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pragma Convention (C, Two_Ints);
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-- Container for two int values
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subtype Fd_Pair is Two_Ints;
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-- Two_Ints as used for Create_Signalling_Fds: a pair of connected file
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-- descriptors, one of which (the "read end" of the connection) being used
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-- for reading, the other one (the "write end") being used for writing.
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Read_End : constant := 0;
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Write_End : constant := 1;
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-- Indices into an Fd_Pair value providing access to each of the connected
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-- file descriptors.
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private
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pragma Import (C, Free_Socket_Set, "__gnat_free_socket_set");
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pragma Import (C, Get_Socket_From_Set, "__gnat_get_socket_from_set");
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pragma Import (C, Is_Socket_In_Set, "__gnat_is_socket_in_set");
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pragma Import (C, Last_Socket_In_Set, "__gnat_last_socket_in_set");
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pragma Import (C, New_Socket_Set, "__gnat_new_socket_set");
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pragma Import (C, Insert_Socket_In_Set, "__gnat_insert_socket_in_set");
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pragma Import (C, Remove_Socket_From_Set, "__gnat_remove_socket_from_set");
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end GNAT.Sockets.Thin_Common;
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