| 1 |
281 |
jeremybenn |
------------------------------------------------------------------------------
|
| 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) 1992-2009 Free Software Foundation, Inc. --
|
| 10 |
|
|
-- --
|
| 11 |
|
|
-- GNARL 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 |
|
|
-- This is the IRIX version of this package
|
| 33 |
|
|
|
| 34 |
|
|
-- This package encapsulates all direct interfaces to OS services that are
|
| 35 |
|
|
-- needed by children of System.
|
| 36 |
|
|
|
| 37 |
|
|
pragma Polling (Off);
|
| 38 |
|
|
-- Turn off polling, we do not want ATC polling to take place during tasking
|
| 39 |
|
|
-- operations. It causes infinite loops and other problems.
|
| 40 |
|
|
|
| 41 |
|
|
with Interfaces.C; use Interfaces.C;
|
| 42 |
|
|
|
| 43 |
|
|
package body System.OS_Interface is
|
| 44 |
|
|
|
| 45 |
|
|
------------------
|
| 46 |
|
|
-- pthread_init --
|
| 47 |
|
|
------------------
|
| 48 |
|
|
|
| 49 |
|
|
procedure pthread_init is
|
| 50 |
|
|
begin
|
| 51 |
|
|
null;
|
| 52 |
|
|
end pthread_init;
|
| 53 |
|
|
|
| 54 |
|
|
-----------------
|
| 55 |
|
|
-- To_Duration --
|
| 56 |
|
|
-----------------
|
| 57 |
|
|
|
| 58 |
|
|
function To_Duration (TS : timespec) return Duration is
|
| 59 |
|
|
begin
|
| 60 |
|
|
return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
|
| 61 |
|
|
end To_Duration;
|
| 62 |
|
|
|
| 63 |
|
|
-----------------
|
| 64 |
|
|
-- To_Timespec --
|
| 65 |
|
|
-----------------
|
| 66 |
|
|
|
| 67 |
|
|
function To_Timespec (D : Duration) return timespec is
|
| 68 |
|
|
S : time_t;
|
| 69 |
|
|
F : Duration;
|
| 70 |
|
|
|
| 71 |
|
|
begin
|
| 72 |
|
|
S := time_t (Long_Long_Integer (D));
|
| 73 |
|
|
F := D - Duration (S);
|
| 74 |
|
|
|
| 75 |
|
|
-- If F has negative value due to a round-up, adjust for positive F
|
| 76 |
|
|
-- value.
|
| 77 |
|
|
|
| 78 |
|
|
if F < 0.0 then
|
| 79 |
|
|
S := S - 1;
|
| 80 |
|
|
F := F + 1.0;
|
| 81 |
|
|
end if;
|
| 82 |
|
|
|
| 83 |
|
|
return timespec'(tv_sec => S,
|
| 84 |
|
|
tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
|
| 85 |
|
|
end To_Timespec;
|
| 86 |
|
|
|
| 87 |
|
|
end System.OS_Interface;
|
