| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 2001-2021, AdaCore -- |
| -- -- |
| -- 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. -- |
| -- Extensive contributions were provided by Ada Core Technologies, Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Version of System.OS_Interface for LynxOS-178 (POSIX Threads) |
| |
| package body System.OS_Interface is |
| |
| ------------------ |
| -- Current_CPU -- |
| ------------------ |
| |
| function Current_CPU return Multiprocessors.CPU is |
| begin |
| -- No multiprocessor support, always return the first CPU Id |
| |
| return Multiprocessors.CPU'First; |
| end Current_CPU; |
| |
| -------------------- |
| -- Get_Affinity -- |
| -------------------- |
| |
| function Get_Affinity (Id : Thread_Id) return Multiprocessors.CPU_Range is |
| pragma Unreferenced (Id); |
| |
| begin |
| -- No multiprocessor support, always return Not_A_Specific_CPU |
| |
| return Multiprocessors.Not_A_Specific_CPU; |
| end Get_Affinity; |
| |
| --------------- |
| -- Get_CPU -- |
| --------------- |
| |
| function Get_CPU (Id : Thread_Id) return Multiprocessors.CPU is |
| pragma Unreferenced (Id); |
| |
| begin |
| -- No multiprocessor support, always return the first CPU Id |
| |
| return Multiprocessors.CPU'First; |
| end Get_CPU; |
| |
| ------------------- |
| -- Get_Page_Size -- |
| ------------------- |
| |
| SC_PAGESIZE : constant := 17; |
| -- C macro to get pagesize value from sysconf |
| |
| function sysconf (name : int) return long; |
| pragma Import (C, sysconf, "sysconf"); |
| |
| function Get_Page_Size return int is |
| begin |
| return int (sysconf (SC_PAGESIZE)); |
| end Get_Page_Size; |
| |
| ----------------- |
| -- 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 is negative due to a 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; |
| |
| ------------- |
| -- sigwait -- |
| ------------- |
| |
| function sigwait |
| (set : access sigset_t; |
| sig : access Signal) |
| return int |
| is |
| function sigwaitinfo |
| (set : access sigset_t; |
| info : System.Address) return Signal; |
| pragma Import (C, sigwaitinfo, "sigwaitinfo"); |
| |
| begin |
| sig.all := sigwaitinfo (set, Null_Address); |
| |
| if sig.all = -1 then |
| return errno; |
| end if; |
| |
| return 0; |
| end sigwait; |
| |
| -------------------- |
| -- 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; |
| |
| ------------------ |
| -- pthread_init -- |
| ------------------ |
| |
| procedure pthread_init is |
| begin |
| null; |
| end pthread_init; |
| |
| end System.OS_Interface; |
