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
|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . P R O G R A M _ I N F O --
-- --
-- B o d y --
-- --
-- Copyright (C) 1997-1999 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. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This is an Irix (old pthread library) version of this package.
-- This package contains the parameters used by the run-time system at
-- program startup. These parameters are isolated in this package body to
-- facilitate replacement by the end user.
--
-- To replace the default values, copy this source file into your build
-- directory, edit the file to reflect your desired behavior, and recompile
-- with the command:
--
-- % gcc -c -O2 -gnatpg s-proinf.adb
--
-- then relink your application as usual.
--
with GNAT.OS_Lib;
package body System.Program_Info is
Kbytes : constant := 1024;
Default_Initial_Sproc_Count : constant := 0;
Default_Max_Sproc_Count : constant := 128;
Default_Sproc_Stack_Size : constant := 16#4000#;
Default_Stack_Guard_Pages : constant := 1;
Default_Default_Time_Slice : constant := 0.0;
Default_Default_Task_Stack : constant := 12 * Kbytes;
Default_Pthread_Sched_Signal : constant := 35;
Default_Pthread_Arena_Size : constant := 16#40000#;
Default_Os_Default_Priority : constant := 0;
-------------------------
-- Initial_Sproc_Count --
-------------------------
function Initial_Sproc_Count return Integer is
function sysmp (P1 : Integer) return Integer;
pragma Import (C, sysmp, "sysmp", "sysmp");
MP_NPROCS : constant := 1; -- # processor in complex
Pthread_Sproc_Count : constant GNAT.OS_Lib.String_Access :=
GNAT.OS_Lib.Getenv ("PTHREAD_SPROC_COUNT");
begin
if Pthread_Sproc_Count.all'Length = 0 then
return Default_Initial_Sproc_Count;
elsif Pthread_Sproc_Count.all = "AUTO" then
return sysmp (MP_NPROCS);
else
return Integer'Value (Pthread_Sproc_Count.all);
end if;
exception
when others =>
return Default_Initial_Sproc_Count;
end Initial_Sproc_Count;
---------------------
-- Max_Sproc_Count --
---------------------
function Max_Sproc_Count return Integer is
Pthread_Max_Sproc_Count : constant GNAT.OS_Lib.String_Access :=
GNAT.OS_Lib.Getenv ("PTHREAD_MAX_SPROC_COUNT");
begin
if Pthread_Max_Sproc_Count.all'Length = 0 then
return Default_Max_Sproc_Count;
else
return Integer'Value (Pthread_Max_Sproc_Count.all);
end if;
exception
when others =>
return Default_Max_Sproc_Count;
end Max_Sproc_Count;
----------------------
-- Sproc_Stack_Size --
----------------------
function Sproc_Stack_Size return Integer is
begin
return Default_Sproc_Stack_Size;
end Sproc_Stack_Size;
------------------------
-- Default_Time_Slice --
------------------------
function Default_Time_Slice return Duration is
Pthread_Time_Slice_Sec : constant GNAT.OS_Lib.String_Access :=
GNAT.OS_Lib.Getenv ("PTHREAD_TIME_SLICE_SEC");
Pthread_Time_Slice_Usec : constant GNAT.OS_Lib.String_Access :=
GNAT.OS_Lib.Getenv ("PTHREAD_TIME_SLICE_USEC");
Val_Sec, Val_Usec : Integer := 0;
begin
if Pthread_Time_Slice_Sec.all'Length /= 0 or
Pthread_Time_Slice_Usec.all'Length /= 0
then
if Pthread_Time_Slice_Sec.all'Length /= 0 then
Val_Sec := Integer'Value (Pthread_Time_Slice_Sec.all);
end if;
if Pthread_Time_Slice_Usec.all'Length /= 0 then
Val_Usec := Integer'Value (Pthread_Time_Slice_Usec.all);
end if;
return Duration (Val_Sec) + Duration (Val_Usec) / 1000.0;
else
return Default_Default_Time_Slice;
end if;
exception
when others =>
return Default_Default_Time_Slice;
end Default_Time_Slice;
------------------------
-- Default_Task_Stack --
------------------------
function Default_Task_Stack return Integer is
begin
return Default_Default_Task_Stack;
end Default_Task_Stack;
-----------------------
-- Stack_Guard_Pages --
-----------------------
function Stack_Guard_Pages return Integer is
Pthread_Stack_Guard_Pages : constant GNAT.OS_Lib.String_Access :=
GNAT.OS_Lib.Getenv ("PTHREAD_STACK_GUARD_PAGES");
begin
if Pthread_Stack_Guard_Pages.all'Length /= 0 then
return Integer'Value (Pthread_Stack_Guard_Pages.all);
else
return Default_Stack_Guard_Pages;
end if;
exception
when others =>
return Default_Stack_Guard_Pages;
end Stack_Guard_Pages;
--------------------------
-- Pthread_Sched_Signal --
--------------------------
function Pthread_Sched_Signal return Integer is
begin
return Default_Pthread_Sched_Signal;
end Pthread_Sched_Signal;
------------------------
-- Pthread_Arena_Size --
------------------------
function Pthread_Arena_Size return Integer is
Pthread_Arena_Size : constant GNAT.OS_Lib.String_Access :=
GNAT.OS_Lib.Getenv ("PTHREAD_ARENA_SIZE");
begin
if Pthread_Arena_Size.all'Length = 0 then
return Default_Pthread_Arena_Size;
else
return Integer'Value (Pthread_Arena_Size.all);
end if;
exception
when others =>
return Default_Pthread_Arena_Size;
end Pthread_Arena_Size;
-------------------------
-- Os_Default_Priority --
-------------------------
function Os_Default_Priority return Integer is
begin
return Default_Os_Default_Priority;
end Os_Default_Priority;
end System.Program_Info;
|
