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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . T A S K _ I N F O --
-- --
-- B o d y --
-- --
-- $Revision$
-- --
-- Copyright (C) 1992-2001 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
-- This package body contains the routines associated with the implementation
-- of the Task_Info pragma.
-- This is the SGI specific version of this module.
with Interfaces.C;
with System.OS_Interface;
with System;
with Unchecked_Conversion;
package body System.Task_Info is
use System.OS_Interface;
use type Interfaces.C.int;
function To_Resource_T is new
Unchecked_Conversion (Resource_Vector_T, resource_t);
MP_NPROCS : constant := 1;
function Sysmp (Cmd : Integer) return Integer;
pragma Import (C, Sysmp);
function Num_Processors (Cmd : Integer := MP_NPROCS) return Integer
renames Sysmp;
function Geteuid return Integer;
pragma Import (C, Geteuid);
Locking_Map : constant array (Page_Locking) of Interfaces.C.int :=
(NOLOCK => 0,
PROCLOCK => 1,
TXTLOCK => 2,
DATLOCK => 4);
-------------------------------
-- Resource_Vector_Functions --
-------------------------------
package body Resource_Vector_Functions is
---------
-- "+" --
---------
function "+" (R : Resource_T) return Resource_Vector_T is
Result : Resource_Vector_T := NO_RESOURCES;
begin
Result (Resource_T'Pos (R)) := True;
return Result;
end "+";
function "+" (R1, R2 : Resource_T) return Resource_Vector_T is
Result : Resource_Vector_T := NO_RESOURCES;
begin
Result (Resource_T'Pos (R1)) := True;
Result (Resource_T'Pos (R2)) := True;
return Result;
end "+";
function "+"
(R : Resource_T;
S : Resource_Vector_T)
return Resource_Vector_T
is
Result : Resource_Vector_T := S;
begin
Result (Resource_T'Pos (R)) := True;
return Result;
end "+";
function "+"
(S : Resource_Vector_T;
R : Resource_T)
return Resource_Vector_T
is
Result : Resource_Vector_T := S;
begin
Result (Resource_T'Pos (R)) := True;
return Result;
end "+";
function "+" (S1, S2 : Resource_Vector_T) return Resource_Vector_T is
Result : Resource_Vector_T;
begin
Result := S1 or S2;
return Result;
end "+";
function "-"
(S : Resource_Vector_T;
R : Resource_T)
return Resource_Vector_T
is
Result : Resource_Vector_T := S;
begin
Result (Resource_T'Pos (R)) := False;
return Result;
end "-";
end Resource_Vector_Functions;
---------------
-- New_Sproc --
---------------
function New_Sproc (Attr : Sproc_Attributes) return sproc_t is
Sproc_Attr : aliased sproc_attr_t;
Sproc : aliased sproc_t;
Status : int;
begin
Status := sproc_attr_init (Sproc_Attr'Unrestricted_Access);
if Status = 0 then
Status := sproc_attr_setresources
(Sproc_Attr'Unrestricted_Access,
To_Resource_T (Attr.Sproc_Resources));
if Attr.CPU /= ANY_CPU then
if Attr.CPU > Num_Processors then
raise Invalid_CPU_Number;
end if;
Status := sproc_attr_setcpu
(Sproc_Attr'Unrestricted_Access,
int (Attr.CPU));
end if;
if Attr.Resident /= NOLOCK then
if Geteuid /= 0 then
raise Permission_Error;
end if;
Status := sproc_attr_setresident
(Sproc_Attr'Unrestricted_Access,
Locking_Map (Attr.Resident));
end if;
if Attr.NDPRI /= NDP_NONE then
-- ??? why is that comment out, should it be removed ?
-- if Geteuid /= 0 then
-- raise Permission_Error;
-- end if;
Status := sproc_attr_setprio
(Sproc_Attr'Unrestricted_Access,
int (Attr.NDPRI));
end if;
Status := sproc_create
(Sproc'Unrestricted_Access,
Sproc_Attr'Unrestricted_Access,
null,
System.Null_Address);
if Status /= 0 then
Status := sproc_attr_destroy (Sproc_Attr'Unrestricted_Access);
raise Sproc_Create_Error;
end if;
Status := sproc_attr_destroy (Sproc_Attr'Unrestricted_Access);
end if;
if Status /= 0 then
raise Sproc_Create_Error;
end if;
return Sproc;
end New_Sproc;
---------------
-- New_Sproc --
---------------
function New_Sproc
(Sproc_Resources : Resource_Vector_T := NO_RESOURCES;
CPU : CPU_Number := ANY_CPU;
Resident : Page_Locking := NOLOCK;
NDPRI : Non_Degrading_Priority := NDP_NONE)
return sproc_t
is
Attr : Sproc_Attributes :=
(Sproc_Resources, CPU, Resident, NDPRI);
begin
return New_Sproc (Attr);
end New_Sproc;
-------------------------------
-- Unbound_Thread_Attributes --
-------------------------------
function Unbound_Thread_Attributes
(Thread_Resources : Resource_Vector_T := NO_RESOURCES;
Thread_Timeslice : Duration := 0.0)
return Thread_Attributes
is
begin
return (False, Thread_Resources, Thread_Timeslice);
end Unbound_Thread_Attributes;
-----------------------------
-- Bound_Thread_Attributes --
-----------------------------
function Bound_Thread_Attributes
(Thread_Resources : Resource_Vector_T := NO_RESOURCES;
Thread_Timeslice : Duration := 0.0;
Sproc : sproc_t)
return Thread_Attributes
is
begin
return (True, Thread_Resources, Thread_Timeslice, Sproc);
end Bound_Thread_Attributes;
-----------------------------
-- Bound_Thread_Attributes --
-----------------------------
function Bound_Thread_Attributes
(Thread_Resources : Resource_Vector_T := NO_RESOURCES;
Thread_Timeslice : Duration := 0.0;
Sproc_Resources : Resource_Vector_T := NO_RESOURCES;
CPU : CPU_Number := ANY_CPU;
Resident : Page_Locking := NOLOCK;
NDPRI : Non_Degrading_Priority := NDP_NONE)
return Thread_Attributes
is
Sproc : sproc_t := New_Sproc
(Sproc_Resources, CPU, Resident, NDPRI);
begin
return (True, Thread_Resources, Thread_Timeslice, Sproc);
end Bound_Thread_Attributes;
-----------------------------------
-- New_Unbound_Thread_Attributes --
-----------------------------------
function New_Unbound_Thread_Attributes
(Thread_Resources : Resource_Vector_T := NO_RESOURCES;
Thread_Timeslice : Duration := 0.0)
return Task_Info_Type
is
begin
return new Thread_Attributes'
(False, Thread_Resources, Thread_Timeslice);
end New_Unbound_Thread_Attributes;
---------------------------------
-- New_Bound_Thread_Attributes --
---------------------------------
function New_Bound_Thread_Attributes
(Thread_Resources : Resource_Vector_T := NO_RESOURCES;
Thread_Timeslice : Duration := 0.0;
Sproc : sproc_t)
return Task_Info_Type
is
begin
return new Thread_Attributes'
(True, Thread_Resources, Thread_Timeslice, Sproc);
end New_Bound_Thread_Attributes;
---------------------------------
-- New_Bound_Thread_Attributes --
---------------------------------
function New_Bound_Thread_Attributes
(Thread_Resources : Resource_Vector_T := NO_RESOURCES;
Thread_Timeslice : Duration := 0.0;
Sproc_Resources : Resource_Vector_T := NO_RESOURCES;
CPU : CPU_Number := ANY_CPU;
Resident : Page_Locking := NOLOCK;
NDPRI : Non_Degrading_Priority := NDP_NONE)
return Task_Info_Type
is
Sproc : sproc_t := New_Sproc
(Sproc_Resources, CPU, Resident, NDPRI);
begin
return new Thread_Attributes'
(True, Thread_Resources, Thread_Timeslice, Sproc);
end New_Bound_Thread_Attributes;
end System.Task_Info;
|
