gcc/ada/s-multip.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --               S Y S T E M . M U L T I P R O C E S S O R S                --
   6 --                                                                          --
   7 --                                  B o d y                                 --
   8 --                                                                          --
   9 --         Copyright (C) 2010-2013, 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 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT 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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 ------------------------------------------------------------------------------
  28
  29 with Interfaces.C; use Interfaces.C;
  30
  31 package body System.Multiprocessors is
  32
  33    --------------------
  34    -- Number_Of_CPUs --
  35    --------------------
  36
  37    function Number_Of_CPUs return CPU is
  38    begin
  39       if CPU'Last = 1 then
  40          return 1;
  41       else
  42          declare
  43             function Gnat_Number_Of_CPUs return int;
  44             pragma Import (C, Gnat_Number_Of_CPUs, "__gnat_number_of_cpus");
  45          begin
  46             return CPU (Gnat_Number_Of_CPUs);
  47          end;
  48       end if;
  49    end Number_Of_CPUs;
  50
  51 end System.Multiprocessors;