| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . T A S K _ I N F O -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2007, 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 2, 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. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- 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; |
