gcc/ada/libgnarl/a-taside.ads

   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
  36 with System;
  37 with System.Tasking;
  38
  39 package 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
  45 is
  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
  90 private
  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
  97 end Ada.Task_Identification;