Mercurial > hg > CbC > CbC_gcc

comparison gcc/ada/libgnarl/s-osinte__lynxos178.adb @ 111:04ced10e8804

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
comparison
equal deleted inserted replaced
68:561a7518be6b 111:04ced10e8804
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- S Y S T E M . O S _ I N T E R F A C E --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2001-2017, AdaCore --
10 -- --
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 3, 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. --
17 -- --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNARL was developed by the GNARL team at Florida State University. --
28 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- Version of System.OS_Interface for LynxOS-178 (POSIX Threads)
33
34 pragma Polling (Off);
35 -- Turn off polling, we do not want ATC polling to take place during tasking
36 -- operations. It may cause infinite loops and other problems.
37
38 package body System.OS_Interface is
39
40 ------------------
41 -- Current_CPU --
42 ------------------
43
44 function Current_CPU return Multiprocessors.CPU is
45 begin
46 -- No multiprocessor support, always return the first CPU Id
47
48 return Multiprocessors.CPU'First;
49 end Current_CPU;
50
51 --------------------
52 -- Get_Affinity --
53 --------------------
54
55 function Get_Affinity (Id : Thread_Id) return Multiprocessors.CPU_Range is
56 pragma Unreferenced (Id);
57
58 begin
59 -- No multiprocessor support, always return Not_A_Specific_CPU
60
61 return Multiprocessors.Not_A_Specific_CPU;
62 end Get_Affinity;
63
64 ---------------
65 -- Get_CPU --
66 ---------------
67
68 function Get_CPU (Id : Thread_Id) return Multiprocessors.CPU is
69 pragma Unreferenced (Id);
70
71 begin
72 -- No multiprocessor support, always return the first CPU Id
73
74 return Multiprocessors.CPU'First;
75 end Get_CPU;
76
77 -------------------
78 -- Get_Page_Size --
79 -------------------
80
81 SC_PAGESIZE : constant := 17;
82 -- C macro to get pagesize value from sysconf
83
84 function sysconf (name : int) return long;
85 pragma Import (C, sysconf, "sysconf");
86
87 function Get_Page_Size return int is
88 begin
89 return int (sysconf (SC_PAGESIZE));
90 end Get_Page_Size;
91
92 -----------------
93 -- To_Duration --
94 -----------------
95
96 function To_Duration (TS : timespec) return Duration is
97 begin
98 return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
99 end To_Duration;
100
101 ------------------------
102 -- To_Target_Priority --
103 ------------------------
104
105 function To_Target_Priority
106 (Prio : System.Any_Priority) return Interfaces.C.int
107 is
108 begin
109 return Interfaces.C.int (Prio);
110 end To_Target_Priority;
111
112 -----------------
113 -- To_Timespec --
114 -----------------
115
116 function To_Timespec (D : Duration) return timespec is
117 S : time_t;
118 F : Duration;
119
120 begin
121 S := time_t (Long_Long_Integer (D));
122 F := D - Duration (S);
123
124 -- If F is negative due to a round-up, adjust for positive F value
125
126 if F < 0.0 then
127 S := S - 1;
128 F := F + 1.0;
129 end if;
130
131 return timespec'(tv_sec => S,
132 tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
133 end To_Timespec;
134
135 -------------
136 -- sigwait --
137 -------------
138
139 function sigwait
140 (set : access sigset_t;
141 sig : access Signal)
142 return int
143 is
144 function sigwaitinfo
145 (set : access sigset_t;
146 info : System.Address) return Signal;
147 pragma Import (C, sigwaitinfo, "sigwaitinfo");
148
149 begin
150 sig.all := sigwaitinfo (set, Null_Address);
151
152 if sig.all = -1 then
153 return errno;
154 end if;
155
156 return 0;
157 end sigwait;
158
159 --------------------
160 -- Get_Stack_Base --
161 --------------------
162
163 function Get_Stack_Base (thread : pthread_t) return Address is
164 pragma Warnings (Off, thread);
165 begin
166 return Null_Address;
167 end Get_Stack_Base;
168
169 ------------------
170 -- pthread_init --
171 ------------------
172
173 procedure pthread_init is
174 begin
175 null;
176 end pthread_init;
177
178 end System.OS_Interface;