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
.Utilities
;
48 -- Used for Abort_Tasks
52 package body Ada
.Task_Identification
is
54 use System
.Parameters
;
56 package STPO
renames System
.Task_Primitives
.Operations
;
58 -----------------------
59 -- Local Subprograms --
60 -----------------------
62 function Convert_Ids
(T
: Task_Id
) return System
.Tasking
.Task_Id
;
63 function Convert_Ids
(T
: System
.Tasking
.Task_Id
) return Task_Id
;
64 pragma Inline
(Convert_Ids
);
65 -- Conversion functions between different forms of Task_Id
71 function "=" (Left
, Right
: Task_Id
) return Boolean is
73 return System
.Tasking
."=" (Convert_Ids
(Left
), Convert_Ids
(Right
));
80 procedure Abort_Task
(T
: Task_Id
) is
82 if T
= Null_Task_Id
then
85 System
.Tasking
.Utilities
.Abort_Tasks
86 (System
.Tasking
.Task_List
'(1 => Convert_Ids (T)));
94 function Convert_Ids (T : Task_Id) return System.Tasking.Task_Id is
96 return System.Tasking.Task_Id (T);
99 function Convert_Ids (T : System.Tasking.Task_Id) return Task_Id is
108 function Current_Task return Task_Id is
110 return Convert_Ids (System.Task_Primitives.Operations.Self);
117 function Image (T : Task_Id) return String is
118 function To_Address is new
119 Unchecked_Conversion (Task_Id, System.Address);
122 if T = Null_Task_Id then
125 elsif T.Common.Task_Image_Len = 0 then
126 return System.Address_Image (To_Address (T));
129 return T.Common.Task_Image (1 .. T.Common.Task_Image_Len)
130 & "_" & System.Address_Image (To_Address (T));
138 function Is_Callable (T : Task_Id) return Boolean is
140 Id : constant System.Tasking.Task_Id := Convert_Ids (T);
142 if T = Null_Task_Id then
145 System.Soft_Links.Abort_Defer.all;
151 STPO.Write_Lock (Id);
152 Result := Id.Callable;
159 System.Soft_Links.Abort_Undefer.all;
168 function Is_Terminated (T : Task_Id) return Boolean is
170 Id : constant System.Tasking.Task_Id := Convert_Ids (T);
175 if T = Null_Task_Id then
178 System.Soft_Links.Abort_Defer.all;
184 STPO.Write_Lock (Id);
185 Result := Id.Common.State = Terminated;
192 System.Soft_Links.Abort_Undefer.all;
197 end Ada.Task_Identification;