gcc/ada/s-parint.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --            S Y S T E M . P A R T I T I O N _ I N T E R F A C E           --
   6 --                                                                          --
   7 --                                  B o d y                                 --
   8 --                   (Dummy body for non-distributed case)                  --
   9 --                                                                          --
  10 --          Copyright (C) 1995-2004 Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNAT was originally developed  by the GNAT team at  New York University. --
  31 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 package body System.Partition_Interface is
  36
  37    pragma Warnings (Off); -- supress warnings for unreferenced formals
  38
  39    M : constant := 7;
  40
  41    type String_Access is access String;
  42
  43    --  To have a minimal implementation of U'Partition_ID.
  44
  45    type Pkg_Node;
  46    type Pkg_List is access Pkg_Node;
  47    type Pkg_Node is record
  48       Name          : String_Access;
  49       Subp_Info     : System.Address;
  50       Subp_Info_Len : Integer;
  51       Next          : Pkg_List;
  52    end record;
  53
  54    Pkg_Head : Pkg_List;
  55    Pkg_Tail : Pkg_List;
  56
  57    function getpid return Integer;
  58    pragma Import (C, getpid);
  59
  60    PID : constant Integer := getpid;
  61
  62    function Lower (S : String) return String;
  63
  64    Passive_Prefix : constant String := "SP__";
  65    --  String prepended in top of shared passive packages
  66
  67    procedure Check
  68      (Name    : Unit_Name;
  69       Version : String;
  70       RCI     : Boolean := True)
  71    is
  72    begin
  73       null;
  74    end Check;
  75
  76    -----------------------------
  77    -- Get_Active_Partition_Id --
  78    -----------------------------
  79
  80    function Get_Active_Partition_ID
  81      (Name : Unit_Name) return System.RPC.Partition_ID
  82    is
  83       P : Pkg_List := Pkg_Head;
  84       N : String   := Lower (Name);
  85
  86    begin
  87       while P /= null loop
  88          if P.Name.all = N then
  89             return Get_Local_Partition_ID;
  90          end if;
  91
  92          P := P.Next;
  93       end loop;
  94
  95       return M;
  96    end Get_Active_Partition_ID;
  97
  98    ------------------------
  99    -- Get_Active_Version --
 100    ------------------------
 101
 102    function Get_Active_Version (Name : Unit_Name) return String is
 103    begin
 104       return "";
 105    end Get_Active_Version;
 106
 107    ----------------------------
 108    -- Get_Local_Partition_Id --
 109    ----------------------------
 110
 111    function Get_Local_Partition_ID return System.RPC.Partition_ID is
 112    begin
 113       return System.RPC.Partition_ID (PID mod M);
 114    end Get_Local_Partition_ID;
 115
 116    ------------------------------
 117    -- Get_Passive_Partition_ID --
 118    ------------------------------
 119
 120    function Get_Passive_Partition_ID
 121      (Name : Unit_Name) return System.RPC.Partition_ID
 122    is
 123    begin
 124       return Get_Local_Partition_ID;
 125    end Get_Passive_Partition_ID;
 126
 127    -------------------------
 128    -- Get_Passive_Version --
 129    -------------------------
 130
 131    function Get_Passive_Version (Name : Unit_Name) return String is
 132    begin
 133       return "";
 134    end Get_Passive_Version;
 135
 136    ------------------
 137    -- Get_RAS_Info --
 138    ------------------
 139
 140    procedure Get_RAS_Info
 141      (Name          :  Unit_Name;
 142       Subp_Id       :  Subprogram_Id;
 143       Proxy_Address : out Interfaces.Unsigned_64)
 144    is
 145       LName : constant String := Lower (Name);
 146       N : Pkg_List;
 147    begin
 148       N := Pkg_Head;
 149       while N /= null loop
 150          if N.Name.all = LName then
 151             declare
 152                subtype Subprogram_Array is RCI_Subp_Info_Array
 153                  (First_RCI_Subprogram_Id ..
 154                   First_RCI_Subprogram_Id + N.Subp_Info_Len - 1);
 155                Subprograms : Subprogram_Array;
 156                for Subprograms'Address use N.Subp_Info;
 157                pragma Import (Ada, Subprograms);
 158             begin
 159                Proxy_Address :=
 160                  Interfaces.Unsigned_64 (Subprograms (Integer (Subp_Id)).Addr);
 161                return;
 162             end;
 163          end if;
 164          N := N.Next;
 165       end loop;
 166       Proxy_Address := 0;
 167    end Get_RAS_Info;
 168
 169    ------------------------------
 170    -- Get_RCI_Package_Receiver --
 171    ------------------------------
 172
 173    function Get_RCI_Package_Receiver
 174      (Name : Unit_Name) return Interfaces.Unsigned_64
 175    is
 176    begin
 177       return 0;
 178    end Get_RCI_Package_Receiver;
 179
 180    -------------------------------
 181    -- Get_Unique_Remote_Pointer --
 182    -------------------------------
 183
 184    procedure Get_Unique_Remote_Pointer
 185      (Handler : in out RACW_Stub_Type_Access)
 186    is
 187    begin
 188       null;
 189    end Get_Unique_Remote_Pointer;
 190
 191    -----------
 192    -- Lower --
 193    -----------
 194
 195    function Lower (S : String) return String is
 196       T : String := S;
 197
 198    begin
 199       for J in T'Range loop
 200          if T (J) in 'A' .. 'Z' then
 201             T (J) := Character'Val (Character'Pos (T (J)) -
 202                                     Character'Pos ('A') +
 203                                     Character'Pos ('a'));
 204          end if;
 205       end loop;
 206
 207       return T;
 208    end Lower;
 209
 210    -------------------------------------
 211    -- Raise_Program_Error_Unknown_Tag --
 212    -------------------------------------
 213
 214    procedure Raise_Program_Error_Unknown_Tag
 215      (E : Ada.Exceptions.Exception_Occurrence)
 216    is
 217    begin
 218       Ada.Exceptions.Raise_Exception
 219         (Program_Error'Identity, Ada.Exceptions.Exception_Message (E));
 220    end Raise_Program_Error_Unknown_Tag;
 221
 222    -----------------
 223    -- RCI_Locator --
 224    -----------------
 225
 226    package body RCI_Locator is
 227
 228       -----------------------------
 229       -- Get_Active_Partition_ID --
 230       -----------------------------
 231
 232       function Get_Active_Partition_ID return System.RPC.Partition_ID is
 233          P : Pkg_List := Pkg_Head;
 234          N : String   := Lower (RCI_Name);
 235
 236       begin
 237          while P /= null loop
 238             if P.Name.all = N then
 239                return Get_Local_Partition_ID;
 240             end if;
 241
 242             P := P.Next;
 243          end loop;
 244
 245          return M;
 246       end Get_Active_Partition_ID;
 247
 248       ------------------------------
 249       -- Get_RCI_Package_Receiver --
 250       ------------------------------
 251
 252       function Get_RCI_Package_Receiver return Interfaces.Unsigned_64 is
 253       begin
 254          return 0;
 255       end Get_RCI_Package_Receiver;
 256
 257    end RCI_Locator;
 258
 259    ------------------------------
 260    -- Register_Passive_Package --
 261    ------------------------------
 262
 263    procedure Register_Passive_Package
 264      (Name    : Unit_Name;
 265       Version : String := "")
 266    is
 267    begin
 268       Register_Receiving_Stub
 269         (Passive_Prefix & Name, null, Version, System.Null_Address, 0);
 270    end Register_Passive_Package;
 271
 272    -----------------------------
 273    -- Register_Receiving_Stub --
 274    -----------------------------
 275
 276    procedure Register_Receiving_Stub
 277      (Name          : Unit_Name;
 278       Receiver      : RPC_Receiver;
 279       Version       : String := "";
 280       Subp_Info     : System.Address;
 281       Subp_Info_Len : Integer)
 282    is
 283       N : constant Pkg_List :=
 284             new Pkg_Node'(new String'(Lower (Name)),
 285                           Subp_Info, Subp_Info_Len,
 286                           Next => null);
 287    begin
 288       if Pkg_Tail = null then
 289          Pkg_Head := N;
 290       else
 291          Pkg_Tail.Next := N;
 292       end if;
 293       Pkg_Tail := N;
 294    end Register_Receiving_Stub;
 295
 296    ---------
 297    -- Run --
 298    ---------
 299
 300    procedure Run
 301      (Main : Main_Subprogram_Type := null)
 302    is
 303    begin
 304       if Main /= null then
 305          Main.all;
 306       end if;
 307    end Run;
 308
 309    --------------------
 310    -- Same_Partition --
 311    --------------------
 312
 313    function Same_Partition
 314       (Left  : access RACW_Stub_Type;
 315        Right : access RACW_Stub_Type) return Boolean
 316    is
 317       pragma Unreferenced (Left);
 318       pragma Unreferenced (Right);
 319    begin
 320       return True;
 321    end Same_Partition;
 322
 323 end System.Partition_Interface;