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) 1992-2018, 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
36with System;
37with System.Tasking;
38
39package Ada.Task_Identification with
40  SPARK_Mode,
41  Abstract_State => (Tasking_State with Synchronous,
42                                        External => (Async_Readers,
43                                                     Async_Writers)),
44  Initializes    => Tasking_State
45is
46   pragma Preelaborate;
47   --  In accordance with Ada 2005 AI-362
48
49   type Task_Id is private;
50   pragma Preelaborable_Initialization (Task_Id);
51
52   Null_Task_Id : constant Task_Id;
53
54   function "=" (Left, Right : Task_Id) return Boolean with
55     Global => null;
56   pragma Inline ("=");
57
58   function Image (T : Task_Id) return String with
59     Global => null;
60
61   function Current_Task return Task_Id with
62     Volatile_Function,
63     Global => Tasking_State;
64   pragma Inline (Current_Task);
65
66   function Environment_Task return Task_Id with
67     SPARK_Mode => Off,
68     Global     => null;
69   pragma Inline (Environment_Task);
70
71   procedure Abort_Task (T : Task_Id) with
72     Global => null;
73   pragma Inline (Abort_Task);
74   --  Note: parameter is mode IN, not IN OUT, per AI-00101
75
76   function Is_Terminated (T : Task_Id) return Boolean with
77     Volatile_Function,
78     Global => Tasking_State;
79   pragma Inline (Is_Terminated);
80
81   function Is_Callable (T : Task_Id) return Boolean with
82     Volatile_Function,
83     Global => Tasking_State;
84   pragma Inline (Is_Callable);
85
86   function Activation_Is_Complete (T : Task_Id) return Boolean with
87     Volatile_Function,
88     Global => Tasking_State;
89
90private
91   pragma SPARK_Mode (Off);
92
93   type Task_Id is new System.Tasking.Task_Id;
94
95   Null_Task_Id : constant Task_Id := null;
96
97end Ada.Task_Identification;
98