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-- As a special exception under Section 7 of GPL version 3, you are granted --
20-- additional permissions described in the GCC Runtime Library Exception,   --
21-- version 3.1, as published by the Free Software Foundation.               --
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
38pragma 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
42with Interfaces.C; use Interfaces.C;
43
44package 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
87end System.OS_Interface;
88