| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNU ADA 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) 1991-2017, Florida State University -- |
| -- Copyright (C) 1995-2021, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT 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). -- |
| -- -- |
| -- The GNARL files that were developed for RTEMS are maintained by On-Line -- |
| -- Applications Research Corporation (http://www.oarcorp.com) in coopera- -- |
| -- tion with Ada Core Technologies Inc. and Florida State University. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is the RTEMS version of this package |
| |
| -- This package encapsulates all direct interfaces to OS services |
| -- that are needed by children of System. |
| |
| with Interfaces.C; use Interfaces.C; |
| |
| package body System.OS_Interface is |
| |
| ----------------- |
| -- To_Duration -- |
| ----------------- |
| |
| function To_Duration (TS : timespec) return Duration is |
| begin |
| return Duration (TS.tv_sec) + Duration (TS.tv_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 round-up, adjust for positive F value |
| |
| if F < 0.0 then |
| S := S - 1; |
| F := F + 1.0; |
| end if; |
| return timespec'(tv_sec => S, |
| tv_nsec => long (Long_Long_Integer (F * 10#1#E9))); |
| end To_Timespec; |
| |
| ------------------ |
| -- pthread_init -- |
| ------------------ |
| |
| procedure pthread_init is |
| begin |
| null; |
| end pthread_init; |
| |
| -------------------- |
| -- Get_Stack_Base -- |
| -------------------- |
| |
| function Get_Stack_Base (thread : pthread_t) return Address is |
| pragma Warnings (Off, thread); |
| |
| begin |
| return Null_Address; |
| end Get_Stack_Base; |
| |
| ----------------- |
| -- sigaltstack -- |
| ----------------- |
| |
| function sigaltstack |
| (ss : not null access stack_t; |
| oss : access stack_t) return int is |
| pragma Unreferenced (ss); |
| pragma Unreferenced (oss); |
| begin |
| return 0; |
| end sigaltstack; |
| |
| ----------------------------------- |
| -- pthread_rwlockattr_setkind_np -- |
| ----------------------------------- |
| |
| function pthread_rwlockattr_setkind_np |
| (attr : access pthread_rwlockattr_t; |
| pref : int) return int is |
| pragma Unreferenced (attr); |
| pragma Unreferenced (pref); |
| begin |
| return 0; |
| end pthread_rwlockattr_setkind_np; |
| |
| end System.OS_Interface; |
