diff options
Diffstat (limited to 'gcc-4.3.1/gcc/ada/s-tasinf-mingw.adb')
| -rw-r--r-- | gcc-4.3.1/gcc/ada/s-tasinf-mingw.adb | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/gcc-4.3.1/gcc/ada/s-tasinf-mingw.adb b/gcc-4.3.1/gcc/ada/s-tasinf-mingw.adb new file mode 100644 index 000000000..c992da549 --- /dev/null +++ b/gcc-4.3.1/gcc/ada/s-tasinf-mingw.adb @@ -0,0 +1,61 @@ +------------------------------------------------------------------------------ +-- -- +-- 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 Windows (native) 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 + declare + SI : aliased System.OS_Interface.SYSTEM_INFO; + begin + System.OS_Interface.GetSystemInfo (SI'Access); + N_CPU := Positive (SI.dwNumberOfProcessors); + end; + end if; + + return N_CPU; + end Number_Of_Processors; + +end System.Task_Info; |