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
|
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . O S _ I N T E R F A C E --
-- --
-- B o d y --
-- --
-- Copyright (C) 2001-2023, AdaCore --
-- --
-- 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/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
-- Version of System.OS_Interface for LynxOS-178 (POSIX Threads)
package body System.OS_Interface is
------------------
-- Current_CPU --
------------------
function Current_CPU return Multiprocessors.CPU is
begin
-- No multiprocessor support, always return the first CPU Id
return Multiprocessors.CPU'First;
end Current_CPU;
--------------------
-- Get_Affinity --
--------------------
function Get_Affinity (Id : Thread_Id) return Multiprocessors.CPU_Range is
pragma Unreferenced (Id);
begin
-- No multiprocessor support, always return Not_A_Specific_CPU
return Multiprocessors.Not_A_Specific_CPU;
end Get_Affinity;
---------------
-- Get_CPU --
---------------
function Get_CPU (Id : Thread_Id) return Multiprocessors.CPU is
pragma Unreferenced (Id);
begin
-- No multiprocessor support, always return the first CPU Id
return Multiprocessors.CPU'First;
end Get_CPU;
-------------------
-- Get_Page_Size --
-------------------
SC_PAGESIZE : constant := 17;
-- C macro to get pagesize value from sysconf
function sysconf (name : int) return long;
pragma Import (C, sysconf, "sysconf");
function Get_Page_Size return int is
begin
return int (sysconf (SC_PAGESIZE));
end Get_Page_Size;
-----------------
-- To_Duration --
-----------------
function To_Duration (TS : timespec) return Duration is
begin
return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
end To_Duration;
------------------------
-- To_Target_Priority --
------------------------
function To_Target_Priority
(Prio : System.Any_Priority) return Interfaces.C.int
is
begin
return Interfaces.C.int (Prio);
end To_Target_Priority;
-----------------
-- To_Timespec --
-----------------
function To_Timespec (D : Duration) return timespec is
S : time_t;
F : Duration;
begin
S := time_t (Long_Long_Integer (D));
F := D - Duration (S);
-- If F is negative due to a round-up, adjust for positive F value
if F < 0.0 then
S := S - 1;
F := F + 1.0;
end if;
return timespec'(tv_sec => S,
tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
end To_Timespec;
-------------
-- sigwait --
-------------
function sigwait
(set : access sigset_t;
sig : access Signal)
return int
is
function sigwaitinfo
(set : access sigset_t;
info : System.Address) return Signal;
pragma Import (C, sigwaitinfo, "sigwaitinfo");
begin
sig.all := sigwaitinfo (set, Null_Address);
if sig.all = -1 then
return errno;
end if;
return 0;
end sigwait;
--------------------
-- Get_Stack_Base --
--------------------
function Get_Stack_Base (thread : pthread_t) return Address is
pragma Warnings (Off, thread);
begin
return Null_Address;
end Get_Stack_Base;
------------------
-- pthread_init --
------------------
procedure pthread_init is
begin
null;
end pthread_init;
end System.OS_Interface;
|
