1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . T A S K _ I D E N T I F I C A T I O N --
9 -- Copyright (C) 1992-2008, Free Software Foundation, Inc. --
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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with System.Address_Image;
35 with System.Parameters;
36 with System.Soft_Links;
37 with System.Task_Primitives.Operations;
38 with Ada.Unchecked_Conversion;
40 pragma Warnings (Off);
41 -- Allow withing of non-Preelaborated units in Ada 2005 mode where this
42 -- package will be categorized as Preelaborate. See AI-362 for details.
43 -- It is safe in the context of the run-time to violate the rules!
45 with System.Tasking.Utilities;
49 package body Ada.Task_Identification is
51 use System.Parameters;
53 package STPO renames System.Task_Primitives.Operations;
55 -----------------------
56 -- Local Subprograms --
57 -----------------------
59 function Convert_Ids (T : Task_Id) return System.Tasking.Task_Id;
60 function Convert_Ids (T : System.Tasking.Task_Id) return Task_Id;
61 pragma Inline (Convert_Ids);
62 -- Conversion functions between different forms of Task_Id
68 function "=" (Left, Right : Task_Id) return Boolean is
70 return System.Tasking."=" (Convert_Ids (Left), Convert_Ids (Right));
77 procedure Abort_Task (T : Task_Id) is
79 if T = Null_Task_Id then
82 System.Tasking.Utilities.Abort_Tasks
83 (System.Tasking.Task_List'(1 => Convert_Ids (T)));
91 function Convert_Ids (T : Task_Id) return System.Tasking.Task_Id is
93 return System.Tasking.Task_Id (T);
96 function Convert_Ids (T : System.Tasking.Task_Id) return Task_Id is
105 function Current_Task return Task_Id is
107 return Convert_Ids (System.Task_Primitives.Operations.Self);
114 function Image (T : Task_Id) return String is
115 function To_Address is new
116 Ada.Unchecked_Conversion (Task_Id, System.Address);
119 if T = Null_Task_Id then
122 elsif T.Common.Task_Image_Len = 0 then
123 return System.Address_Image (To_Address (T));
126 return T.Common.Task_Image (1 .. T.Common.Task_Image_Len)
127 & "_" & System.Address_Image (To_Address (T));
135 function Is_Callable (T : Task_Id) return Boolean is
137 Id : constant System.Tasking.Task_Id := Convert_Ids (T);
139 if T = Null_Task_Id then
142 System.Soft_Links.Abort_Defer.all;
148 STPO.Write_Lock (Id);
149 Result := Id.Callable;
156 System.Soft_Links.Abort_Undefer.all;
165 function Is_Terminated (T : Task_Id) return Boolean is
167 Id : constant System.Tasking.Task_Id := Convert_Ids (T);
172 if T = Null_Task_Id then
175 System.Soft_Links.Abort_Defer.all;
181 STPO.Write_Lock (Id);
182 Result := Id.Common.State = Terminated;
189 System.Soft_Links.Abort_Undefer.all;
194 end Ada.Task_Identification;