gcc/ada/5ztpopsp.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
   4 --                                                                          --
   5 --                SYSTEM.TASK_PRIMITIVES.OPERATIONS.SPECIFIC                --
   6 --                                                                          --
   7 --                                  B o d y                                 --
   8 --                                                                          --
   9 --         Copyright (C) 1992-2002, Free Software Foundation, Inc.          --
  10 --                                                                          --
  11 -- GNARL 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. GNARL 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 GNARL; 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 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This is a VxWorks version of this package where foreign threads are
  35 --  recognized.
  36
  37 separate (System.Task_Primitives.Operations)
  38 package body Specific is
  39
  40    -------------------
  41    -- Is_Valid_Task --
  42    -------------------
  43
  44    function Is_Valid_Task return Boolean is
  45    begin
  46       return taskVarGet (taskIdSelf, ATCB_Key'Access) /= ERROR;
  47    end Is_Valid_Task;
  48
  49    ---------
  50    -- Set --
  51    ---------
  52
  53    procedure Set (Self_Id : Task_ID) is
  54       Result : STATUS;
  55
  56    begin
  57       if taskVarGet (0, ATCB_Key'Access) = ERROR then
  58          Result := taskVarAdd (0, ATCB_Key'Access);
  59          pragma Assert (Result = OK);
  60       end if;
  61
  62       ATCB_Key := To_Address (Self_Id);
  63    end Set;
  64
  65    ----------
  66    -- Self --
  67    ----------
  68
  69    function Self return Task_ID is
  70    begin
  71       return To_Task_Id (ATCB_Key);
  72    end Self;
  73
  74 end Specific;