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