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