projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 019c74bb AC |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUN-TIME COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- System.Atomic_Operations.Test_And_Set -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 2019-2020, Free Software Foundation, Inc. -- |
| 019c74bb AC |
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 | ||
| 32 | package System.Atomic_Operations.Test_And_Set | |
| 33 | with Pure | |
| 34 | -- Nonblocking | |
| 35 | is | |
| 36 | type Test_And_Set_Flag is mod 2 ** 8 | |
| 37 | with Atomic, Default_Value => 0, Size => 8; | |
| 38 | ||
| 39 | function Atomic_Test_And_Set | |
| 40 | (Item : aliased in out Test_And_Set_Flag) return Boolean | |
| 41 | with Convention => Intrinsic; | |
| 42 | ||
| 43 | procedure Atomic_Clear | |
| 44 | (Item : aliased in out Test_And_Set_Flag) | |
| 45 | with Convention => Intrinsic; | |
| 46 | ||
| 47 | function Is_Lock_Free | |
| 48 | (Item : aliased Test_And_Set_Flag) return Boolean | |
| 49 | with Convention => Intrinsic; | |
| 50 | ||
| 51 | private | |
| 52 | pragma Inline_Always (Atomic_Test_And_Set); | |
| 53 | pragma Inline_Always (Atomic_Clear); | |
| 54 | pragma Inline_Always (Is_Lock_Free); | |
| 55 | end System.Atomic_Operations.Test_And_Set; |