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) 1992-2005 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
;
40 with Unchecked_Conversion
;
42 pragma Warnings
(Off
);
43 -- Allow withing of non-Preelaborated units in Ada 2005 mode where this
44 -- package will be categorized as Preelaborate. See AI-362 for details.
45 -- It is safe in the context of the run-time to violate the rules!
47 with System
.Tasking
.Stages
;
51 package body Ada
.Task_Identification
is
53 use System
.Parameters
;
55 package STPO
renames System
.Task_Primitives
.Operations
;
57 -----------------------
58 -- Local Subprograms --
59 -----------------------
61 function Convert_Ids
(T
: Task_Id
) return System
.Tasking
.Task_Id
;
62 function Convert_Ids
(T
: System
.Tasking
.Task_Id
) return Task_Id
;
63 pragma Inline
(Convert_Ids
);
64 -- Conversion functions between different forms of Task_Id
70 function "=" (Left
, Right
: Task_Id
) return Boolean is
72 return System
.Tasking
."=" (Convert_Ids
(Left
), Convert_Ids
(Right
));
79 procedure Abort_Task
(T
: Task_Id
) is
81 if T
= Null_Task_Id
then
84 System
.Tasking
.Stages
.Abort_Tasks
85 (System
.Tasking
.Task_List
'(1 => Convert_Ids (T)));
93 function Convert_Ids (T : Task_Id) return System.Tasking.Task_Id is
95 return System.Tasking.Task_Id (T);
98 function Convert_Ids (T : System.Tasking.Task_Id) return Task_Id is
107 function Current_Task return Task_Id is
109 return Convert_Ids (System.Task_Primitives.Operations.Self);
116 function Image (T : Task_Id) return String is
117 function To_Address is new
118 Unchecked_Conversion (Task_Id, System.Address);
121 if T = Null_Task_Id then
124 elsif T.Common.Task_Image_Len = 0 then
125 return System.Address_Image (To_Address (T));
128 return T.Common.Task_Image (1 .. T.Common.Task_Image_Len)
129 & "_" & System.Address_Image (To_Address (T));
137 function Is_Callable (T : Task_Id) return Boolean is
139 Id : constant System.Tasking.Task_Id := Convert_Ids (T);
141 if T = Null_Task_Id then
144 System.Soft_Links.Abort_Defer.all;
150 STPO.Write_Lock (Id);
151 Result := Id.Callable;
158 System.Soft_Links.Abort_Undefer.all;
167 function Is_Terminated (T : Task_Id) return Boolean is
169 Id : constant System.Tasking.Task_Id := Convert_Ids (T);
174 if T = Null_Task_Id then
177 System.Soft_Links.Abort_Defer.all;
183 STPO.Write_Lock (Id);
184 Result := Id.Common.State = Terminated;
191 System.Soft_Links.Abort_Undefer.all;
196 end Ada.Task_Identification;