| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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; |
