blob: 4c7eb0a8cd5ec5b3780b933408650f1f6368c07a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . T A S K _ I D E N T I F I C A T I O N --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with System.Address_Image;
with System.Parameters;
with System.Soft_Links;
with System.Task_Primitives;
with System.Task_Primitives.Operations;
with Ada.Unchecked_Conversion;
pragma Warnings (Off);
-- Allow withing of non-Preelaborated units in Ada 2005 mode where this
-- package will be categorized as Preelaborate. See AI-362 for details.
-- It is safe in the context of the run-time to violate the rules!
with System.Tasking.Utilities;
pragma Warnings (On);
package body Ada.Task_Identification is
use System.Parameters;
package STPO renames System.Task_Primitives.Operations;
-----------------------
-- Local Subprograms --
-----------------------
function Convert_Ids (T : Task_Id) return System.Tasking.Task_Id;
function Convert_Ids (T : System.Tasking.Task_Id) return Task_Id;
pragma Inline (Convert_Ids);
-- Conversion functions between different forms of Task_Id
---------
-- "=" --
---------
function "=" (Left, Right : Task_Id) return Boolean is
begin
return System.Tasking."=" (Convert_Ids (Left), Convert_Ids (Right));
end "=";
-----------------
-- Abort_Task --
----------------
procedure Abort_Task (T : Task_Id) is
begin
if T = Null_Task_Id then
raise Program_Error;
else
System.Tasking.Utilities.Abort_Tasks
(System.Tasking.Task_List'(1 => Convert_Ids (T)));
end if;
end Abort_Task;
-----------------
-- Convert_Ids --
-----------------
function Convert_Ids (T : Task_Id) return System.Tasking.Task_Id is
begin
return System.Tasking.Task_Id (T);
end Convert_Ids;
function Convert_Ids (T : System.Tasking.Task_Id) return Task_Id is
begin
return Task_Id (T);
end Convert_Ids;
------------------
-- Current_Task --
------------------
function Current_Task return Task_Id is
begin
return Convert_Ids (System.Task_Primitives.Operations.Self);
end Current_Task;
-----------
-- Image --
-----------
function Image (T : Task_Id) return String is
function To_Address is new
Ada.Unchecked_Conversion
(Task_Id, System.Task_Primitives.Task_Address);
begin
if T = Null_Task_Id then
return "";
elsif T.Common.Task_Image_Len = 0 then
return System.Address_Image (To_Address (T));
else
return T.Common.Task_Image (1 .. T.Common.Task_Image_Len)
& "_" & System.Address_Image (To_Address (T));
end if;
end Image;
-----------------
-- Is_Callable --
-----------------
function Is_Callable (T : Task_Id) return Boolean is
Result : Boolean;
Id : constant System.Tasking.Task_Id := Convert_Ids (T);
begin
if T = Null_Task_Id then
raise Program_Error;
else
System.Soft_Links.Abort_Defer.all;
if Single_Lock then
STPO.Lock_RTS;
end if;
STPO.Write_Lock (Id);
Result := Id.Callable;
STPO.Unlock (Id);
if Single_Lock then
STPO.Unlock_RTS;
end if;
System.Soft_Links.Abort_Undefer.all;
return Result;
end if;
end Is_Callable;
-------------------
-- Is_Terminated --
-------------------
function Is_Terminated (T : Task_Id) return Boolean is
Result : Boolean;
Id : constant System.Tasking.Task_Id := Convert_Ids (T);
use System.Tasking;
begin
if T = Null_Task_Id then
raise Program_Error;
else
System.Soft_Links.Abort_Defer.all;
if Single_Lock then
STPO.Lock_RTS;
end if;
STPO.Write_Lock (Id);
Result := Id.Common.State = Terminated;
STPO.Unlock (Id);
if Single_Lock then
STPO.Unlock_RTS;
end if;
System.Soft_Links.Abort_Undefer.all;
return Result;
end if;
end Is_Terminated;
end Ada.Task_Identification;
|
