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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [s-tasinf-linux.adb] - Blame information for rev 706

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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                     S Y S T E M . T A S K _ I N F O                      --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--            Copyright (C) 2009, Free Software Foundation, Inc.            --
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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 3,  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.                                     --
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--                                                                          --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception,   --
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-- version 3.1, as published by the Free Software Foundation.               --
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--                                                                          --
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-- You should have received a copy of the GNU General Public License and    --
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-- a copy of the GCC Runtime Library Exception along with this program;     --
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-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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-- <http://www.gnu.org/licenses/>.                                          --
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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 GNU/Linux version of this module
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package body System.Task_Info is
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   N_CPU : Natural := 0;
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   pragma Atomic (N_CPU);
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   --  Cache CPU number. Use pragma Atomic to avoid a race condition when
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   --  setting N_CPU in Number_Of_Processors below.
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   --------------------------
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   -- Number_Of_Processors --
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   --------------------------
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   function Number_Of_Processors return Positive is
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   begin
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      if N_CPU = 0 then
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         N_CPU := Natural
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           (OS_Interface.sysconf (OS_Interface.SC_NPROCESSORS_ONLN));
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      end if;
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      return N_CPU;
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   end Number_Of_Processors;
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end System.Task_Info;

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