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-------------------------------------------------------------------------------
--- --
--- 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) 1991-2009, Free Software Foundation, Inc. --
--- --
--- GNARL 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. It is --
--- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
--- State University (http://www.gnat.com). --
--- --
-------------------------------------------------------------------------------
-
--- This is the FreeBSD THREADS version of this package
-
-with Interfaces.C; use Interfaces.C;
-
-package body System.OS_Interface is
-
- -----------
- -- Errno --
- -----------
-
- function Errno return int is
- type int_ptr is access all int;
-
- function internal_errno return int_ptr;
- pragma Import (C, internal_errno, "__error");
-
- begin
- return (internal_errno.all);
- end Errno;
-
- --------------------
- -- Get_Stack_Base --
- --------------------
-
- function Get_Stack_Base (thread : pthread_t) return Address is
- pragma Unreferenced (thread);
- begin
- return (0);
- end Get_Stack_Base;
-
- ------------------
- -- pthread_init --
- ------------------
-
- procedure pthread_init is
- begin
- null;
- end pthread_init;
-
- -----------------
- -- To_Duration --
- -----------------
-
- function To_Duration (TS : timespec) return Duration is
- begin
- return Duration (TS.ts_sec) + Duration (TS.ts_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 has negative value due to a round-up, adjust for positive F
-
- if F < 0.0 then
- S := S - 1;
- F := F + 1.0;
- end if;
-
- return timespec'(ts_sec => S,
- ts_nsec => long (Long_Long_Integer (F * 10#1#E9)));
- end To_Timespec;
-
-end System.OS_Interface;