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Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-osinte-darwin.adb')
-rw-r--r-- | gcc-4.2.1/gcc/ada/s-osinte-darwin.adb | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/gcc-4.2.1/gcc/ada/s-osinte-darwin.adb b/gcc-4.2.1/gcc/ada/s-osinte-darwin.adb new file mode 100644 index 000000000..3ccd8c274 --- /dev/null +++ b/gcc-4.2.1/gcc/ada/s-osinte-darwin.adb @@ -0,0 +1,162 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1999-2006 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 2, or (at your option) any later ver- -- +-- sion. GNARL 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNARL; see file COPYING. If not, write -- +-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is a Darwin Threads version of this package + +pragma Polling (Off); +-- Turn off polling, we do not want ATC polling to take place during +-- tasking operations. It causes infinite loops and other problems. + +package body System.OS_Interface is + + use Interfaces.C; + + ----------------- + -- 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; + + function To_Duration (TV : struct_timeval) return Duration is + begin + return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6; + end To_Duration; + + ----------------- + -- 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 + -- value. + + if F < 0.0 then + S := S - 1; + F := F + 1.0; + end if; + + return timespec'(tv_sec => S, + tv_nsec => int32_t (Long_Long_Integer (F * 10#1#E9))); + end To_Timespec; + + ---------------- + -- To_Timeval -- + ---------------- + + function To_Timeval (D : Duration) return struct_timeval is + S : int32_t; + F : Duration; + + begin + S := int32_t (D); + F := D - Duration (S); + + -- If F has negative value 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 struct_timeval' + (Tv_Sec => S, + tv_usec => int32_t (Long_Long_Integer (F * 10#1#E6))); + end To_Timeval; + + ------------------- + -- clock_gettime -- + ------------------- + + function clock_gettime + (clock_id : clockid_t; + tp : access timespec) return int + is + pragma Unreferenced (clock_id); + Result : int; + tv : aliased struct_timeval; + + function gettimeofday + (tv : access struct_timeval; + tz : System.Address := System.Null_Address) return int; + pragma Import (C, gettimeofday, "gettimeofday"); + + begin + Result := gettimeofday (tv'Unchecked_Access); + tp.all := To_Timespec (To_Duration (tv)); + return Result; + end clock_gettime; + + ----------------- + -- sched_yield -- + ----------------- + + function sched_yield return int is + procedure sched_yield_base (arg : System.Address); + pragma Import (C, sched_yield_base, "pthread_yield_np"); + + begin + sched_yield_base (System.Null_Address); + return 0; + end sched_yield; + + ------------------ + -- pthread_init -- + ------------------ + + procedure pthread_init is + begin + null; + end pthread_init; + + ---------------- + -- Stack_Base -- + ---------------- + + function Get_Stack_Base (thread : pthread_t) return Address is + pragma Unreferenced (thread); + begin + return System.Null_Address; + end Get_Stack_Base; + +end System.OS_Interface; |