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) 1992-2001 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, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, 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 -- used for the function itself
40 with System
.Tasking
.Stages
;
41 -- used for Terminated
44 with System
.Tasking
.Rendezvous
;
47 with System
.Task_Primitives
.Operations
;
50 with System
.Task_Info
;
51 use type System
.Task_Info
.Task_Image_Type
;
53 with Unchecked_Conversion
;
55 package body Ada
.Task_Identification
is
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 use System.Task_Info;
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 = null then
126 return System.Address_Image (To_Address (T));
129 return T.Common.Task_Image.all
130 & "_" & System.Address_Image (To_Address (T));
138 function Is_Callable (T : Task_Id) return Boolean is
140 if T = Null_Task_Id then
143 return System.Tasking.Rendezvous.Callable (Convert_Ids (T));
151 function Is_Terminated (T : Task_Id) return Boolean is
153 if T = Null_Task_Id then
156 return System.Tasking.Stages.Terminated (Convert_Ids (T));
160 end Ada.Task_Identification;