| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . T A S K _ I N F O -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2007-2022, 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 -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is the Windows (native) version of this module |
| |
| with System.OS_Interface; |
| pragma Unreferenced (System.OS_Interface); |
| -- System.OS_Interface is not used today, but the protocol between the |
| -- run-time and the binder is that any tasking application uses |
| -- System.OS_Interface, so notify the binder with this "with" clause. |
| |
| 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 |
| declare |
| SI : aliased Win32.SYSTEM_INFO; |
| begin |
| Win32.GetSystemInfo (SI'Access); |
| N_CPU := Positive (SI.dwNumberOfProcessors); |
| end; |
| end if; |
| |
| return N_CPU; |
| end Number_Of_Processors; |
| |
| end System.Task_Info; |
