1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- A D A . T A S K _ I D E N T I F I C A T I O N -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2020, Free Software Foundation, Inc. -- 10-- -- 11-- This specification is derived from the Ada Reference Manual for use with -- 12-- GNAT. The copyright notice above, and the license provisions that follow -- 13-- apply solely to the contents of the part following the private keyword. -- 14-- -- 15-- GNAT is free software; you can redistribute it and/or modify it under -- 16-- terms of the GNU General Public License as published by the Free Soft- -- 17-- ware Foundation; either version 3, or (at your option) any later ver- -- 18-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 19-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 20-- or FITNESS FOR A PARTICULAR PURPOSE. -- 21-- -- 22-- As a special exception under Section 7 of GPL version 3, you are granted -- 23-- additional permissions described in the GCC Runtime Library Exception, -- 24-- version 3.1, as published by the Free Software Foundation. -- 25-- -- 26-- You should have received a copy of the GNU General Public License and -- 27-- a copy of the GCC Runtime Library Exception along with this program; -- 28-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 29-- <http://www.gnu.org/licenses/>. -- 30-- -- 31-- GNAT was originally developed by the GNAT team at New York University. -- 32-- Extensive contributions were provided by Ada Core Technologies Inc. -- 33-- -- 34------------------------------------------------------------------------------ 35 36-- Preconditions in this unit are meant for analysis only, not for run-time 37-- checking, so that the expected exceptions are raised. 38-- This is enforced by setting the corresponding assertion policy to Ignore. 39 40pragma Assertion_Policy (Pre => Ignore); 41 42with System; 43with System.Tasking; 44 45package Ada.Task_Identification with 46 SPARK_Mode, 47 Abstract_State => (Tasking_State with Synchronous), 48 Initializes => Tasking_State 49is 50 pragma Preelaborate; 51 -- In accordance with Ada 2005 AI-362 52 53 type Task_Id is private; 54 pragma Preelaborable_Initialization (Task_Id); 55 56 Null_Task_Id : constant Task_Id; 57 58 function "=" (Left, Right : Task_Id) return Boolean with 59 Global => null; 60 pragma Inline ("="); 61 62 function Image (T : Task_Id) return String with 63 Global => null; 64 65 function Current_Task return Task_Id with 66 Volatile_Function, 67 Global => Tasking_State; 68 pragma Inline (Current_Task); 69 70 function Environment_Task return Task_Id with 71 SPARK_Mode => Off, 72 Global => null; 73 pragma Inline (Environment_Task); 74 75 procedure Abort_Task (T : Task_Id) with 76 Pre => T /= Null_Task_Id, 77 Global => null; 78 pragma Inline (Abort_Task); 79 -- Note: parameter is mode IN, not IN OUT, per AI-00101 80 81 function Is_Terminated (T : Task_Id) return Boolean with 82 Volatile_Function, 83 Pre => T /= Null_Task_Id, 84 Global => Tasking_State; 85 pragma Inline (Is_Terminated); 86 87 function Is_Callable (T : Task_Id) return Boolean with 88 Volatile_Function, 89 Pre => T /= Null_Task_Id, 90 Global => Tasking_State; 91 pragma Inline (Is_Callable); 92 93 function Activation_Is_Complete (T : Task_Id) return Boolean with 94 Volatile_Function, 95 Global => Tasking_State; 96 97private 98 pragma SPARK_Mode (Off); 99 100 type Task_Id is new System.Tasking.Task_Id; 101 102 Null_Task_Id : constant Task_Id := null; 103 104end Ada.Task_Identification; 105