1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- System.Atomic_Operations.Test_And_Set -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 2019, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32with System.Atomic_Primitives; use System.Atomic_Primitives; 33 34package body System.Atomic_Operations.Test_And_Set is 35 36 ------------------------- 37 -- Atomic_Test_And_Set -- 38 ------------------------- 39 40 function Atomic_Test_And_Set 41 (Item : aliased in out Test_And_Set_Flag) return Boolean is 42 begin 43 return Boolean (Atomic_Test_And_Set (Item'Address)); 44 end Atomic_Test_And_Set; 45 46 ------------------ 47 -- Atomic_Clear -- 48 ------------------ 49 50 procedure Atomic_Clear 51 (Item : aliased in out Test_And_Set_Flag) is 52 begin 53 Atomic_Clear (Item'Address); 54 end Atomic_Clear; 55 56 ------------------ 57 -- Is_Lock_Free -- 58 ------------------ 59 60 function Is_Lock_Free (Item : aliased Test_And_Set_Flag) return Boolean is 61 pragma Unreferenced (Item); 62 begin 63 return True; 64 end Is_Lock_Free; 65 66end System.Atomic_Operations.Test_And_Set; 67