g-soccon-freebsd.ads, [...]: Add new constant Thread_Blocking_IO...

2007-04-20  Thomas Quinot  <quinot@adacore.com>
	    Bob Duff  <duff@adacore.com>

        * g-soccon-freebsd.ads, g-soccon-vxworks.ads:,
	g-soccon-aix.ads, g-soccon-irix.ads, g-soccon-hpux.ads, 
	g-soccon-solaris.ads, g-soccon-vms.ads, g-soccon-tru64.ads:  Add new
	constant Thread_Blocking_IO, always True by default, set False
	on a per-runtime basis.
	(Need_Netdb_Buffer): New constant.

	* g-stheme.adb, g-sttsne.ads, g-sttsne-locking.ads,
	g-sttsne-locking.adb, g-sttsne-vxworks.ads, g-sttsne-vxworks.adb: New
	files.

	* g-socthi-vxworks.ads, g-socthi-vxworks.adb,
	g-socthi-vms.ads, g-socthi-vms.adb (Safe_Gethostbyname,
	Safe_Gethostbyaddr, Safe_Getservbyname, Safe_Getservbyport): Use new
	child package Task_Safe_NetDB
	(Host_Error_Messages): Add stub body.
	(GNAT.Sockets.Thin.Signalling_Fds): New procedure Close.

	* g-soccon-mingw.ads: Add Windows-specific constants.
	(Need_Netdb_Buffer): New constant.
	(GNAT.Sockets.Thin.C_Inet_Addr, Windows version): Remove useless Ada
	wrapper and import inet_addr(3) from the standard sockets library
	directly instead.
	(In_Addr): Add alignment clause.
	(GNAT.Sockets.Thin.Signalling_Fds): New procedure Close.

From-SVN: r125358

1 files changed, 75 insertions, 0 deletions

diff --git a/gcc/ada/g-stheme.adb b/gcc/ada/g-stheme.adb
new file mode 100644
index 0000000..25d6c61
--- /dev/null
+++ b/gcc/ada/g-stheme.adb
@@ -0,0 +1,75 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                   GNAT.SOCKETS.THIN.HOST_ERROR_MESSAGES                  --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--                       Copyright (C) 2007, AdaCore                        --
+--                                                                          --
+-- 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,  51  Franklin  Street,  Fifth  Floor, --
+-- Boston, MA 02110-1301, 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 the default implementation of this unit, providing explicit
+--  literal messages (we do not use hstrerror from the standard C library,
+--  as this function is obsolete).
+
+separate (GNAT.Sockets.Thin)
+package body Host_Error_Messages is
+
+   package Messages is
+      HOST_NOT_FOUND : aliased char_array := "Host not found" & nul;
+      TRY_AGAIN      : aliased char_array := "Try again"      & nul;
+      NO_RECOVERY    : aliased char_array := "No recovery"    & nul;
+      NO_DATA        : aliased char_array := "No address"     & nul;
+      Unknown_Error  : aliased char_array := "Unknown error"  & nul;
+   end Messages;
+
+   function Host_Error_Message (H_Errno : Integer) return C.Strings.chars_ptr
+   is
+      use Interfaces.C.Strings;
+      function TCP
+        (P : char_array_access; Nul_Check : Boolean := False) return chars_ptr
+        renames To_Chars_Ptr;
+   begin
+      case H_Errno is
+         when Constants.HOST_NOT_FOUND =>
+            return TCP (Messages.HOST_NOT_FOUND'Access);
+
+         when Constants.TRY_AGAIN      =>
+            return TCP (Messages.TRY_AGAIN'Access);
+
+         when Constants.NO_RECOVERY    =>
+            return TCP (Messages.NO_RECOVERY'Access);
+
+         when Constants.NO_DATA        =>
+            return TCP (Messages.NO_DATA'Access);
+
+         when others                   =>
+            return TCP (Messages.Unknown_Error'Access);
+
+      end case;
+   end Host_Error_Message;
+
+end Host_Error_Messages;