------------------------------------------------------------------------------ -- -- -- 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 -- -- . -- -- -- -- 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;