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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/ada/s-tasinf-linux.adb | |
| download | cbb-gcc-4.6.4-upstream.tar.bz2 cbb-gcc-4.6.4-upstream.tar.xz | |
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Diffstat (limited to 'gcc/ada/s-tasinf-linux.adb')
| -rw-r--r-- | gcc/ada/s-tasinf-linux.adb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/ada/s-tasinf-linux.adb b/gcc/ada/s-tasinf-linux.adb new file mode 100644 index 000000000..d194cfb93 --- /dev/null +++ b/gcc/ada/s-tasinf-linux.adb @@ -0,0 +1,55 @@ +------------------------------------------------------------------------------ +-- -- +-- 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 -- +-- <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 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; |