File : s-osinte-solaris.adb
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) 1991-1994, Florida State University --
10 -- Copyright (C) 1995-2010, AdaCore --
11 -- --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 3, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- --
23 -- You should have received a copy of the GNU General Public License and --
24 -- a copy of the GCC Runtime Library Exception along with this program; --
25 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
26 -- <http://www.gnu.org/licenses/>. --
27 -- --
28 -- GNARL was developed by the GNARL team at Florida State University. --
29 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
30 -- --
31 ------------------------------------------------------------------------------
32
33 -- This is a Solaris version of this package
34
35 -- This package encapsulates all direct interfaces to OS services
36 -- that are needed by children of System.
37
38 pragma Polling (Off);
39 -- Turn off polling, we do not want ATC polling to take place during
40 -- tasking operations. It causes infinite loops and other problems.
41
42 with Interfaces.C; use Interfaces.C;
43
44 package body System.OS_Interface is
45
46 -----------------
47 -- To_Duration --
48 -----------------
49
50 function To_Duration (TS : timespec) return Duration is
51 begin
52 return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
53 end To_Duration;
54
55 -----------------
56 -- To_Timespec --
57 -----------------
58
59 function To_Timespec (D : Duration) return timespec is
60 S : time_t;
61 F : Duration;
62
63 begin
64 S := time_t (Long_Long_Integer (D));
65 F := D - Duration (S);
66
67 -- If F has negative value due to a round-up, adjust for positive F
68
69 if F < 0.0 then
70 S := S - 1;
71 F := F + 1.0;
72 end if;
73
74 return timespec'(tv_sec => S,
75 tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
76 end To_Timespec;
77
78 ------------------
79 -- pthread_init --
80 ------------------
81
82 procedure pthread_init is
83 begin
84 null;
85 end pthread_init;
86
87 end System.OS_Interface;