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Diffstat (limited to 'gcc-4.8.3/gcc/ada/s-osinte-aix.adb')
| -rw-r--r-- | gcc-4.8.3/gcc/ada/s-osinte-aix.adb | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/s-osinte-aix.adb b/gcc-4.8.3/gcc/ada/s-osinte-aix.adb new file mode 100644 index 000000000..bfe03a637 --- /dev/null +++ b/gcc-4.8.3/gcc/ada/s-osinte-aix.adb @@ -0,0 +1,232 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1997-2009, 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. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is a AIX (Native) 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; + + ------------------------ + -- To_Target_Priority -- + ------------------------ + + function To_Target_Priority + (Prio : System.Any_Priority) return Interfaces.C.int + is + Dispatching_Policy : Character; + pragma Import (C, Dispatching_Policy, "__gl_task_dispatching_policy"); + + Time_Slice_Val : Integer; + pragma Import (C, Time_Slice_Val, "__gl_time_slice_val"); + + begin + -- For the case SCHED_OTHER the only valid priority across all supported + -- versions of AIX is 1 (note that the scheduling policy can be set + -- with the pragma Task_Dispatching_Policy or setting the time slice + -- value). Otherwise, for SCHED_RR and SCHED_FIFO, the system defines + -- priorities in the range 1 .. 127. This means that we must map + -- System.Any_Priority in the range 0 .. 126 to 1 .. 127. + + if Dispatching_Policy = ' ' and then Time_Slice_Val < 0 then + return 1; + else + return Interfaces.C.int (Prio) + 1; + end if; + 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; + + ------------------- + -- clock_gettime -- + ------------------- + + function clock_gettime + (clock_id : clockid_t; + tp : access timespec) + return int + is + pragma Unreferenced (clock_id); + + -- Older AIX don't have clock_gettime, so use gettimeofday + + use Interfaces; + + type timeval is array (1 .. 2) of C.long; + + procedure timeval_to_duration + (T : not null access timeval; + sec : not null access C.long; + usec : not null access C.long); + pragma Import (C, timeval_to_duration, "__gnat_timeval_to_duration"); + + Micro : constant := 10**6; + sec : aliased C.long; + usec : aliased C.long; + TV : aliased timeval; + Result : int; + + function gettimeofday + (Tv : access timeval; + Tz : System.Address := System.Null_Address) return int; + pragma Import (C, gettimeofday, "gettimeofday"); + + begin + Result := gettimeofday (TV'Access, System.Null_Address); + pragma Assert (Result = 0); + timeval_to_duration (TV'Access, sec'Access, usec'Access); + tp.all := To_Timespec (Duration (sec) + Duration (usec) / Micro); + return Result; + end clock_gettime; + + ----------------- + -- sched_yield -- + ----------------- + + -- AIX Thread does not have sched_yield; + + function sched_yield return int is + procedure pthread_yield; + pragma Import (C, pthread_yield, "sched_yield"); + begin + pthread_yield; + return 0; + end sched_yield; + + -------------------- + -- 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_PRIO_INHERIT -- + -------------------------- + + AIX_Version : Integer := 0; + -- AIX version in the form xy for AIX version x.y (0 means not set) + + SYS_NMLN : constant := 32; + -- AIX system constant used to define utsname, see sys/utsname.h + + subtype String_NMLN is String (1 .. SYS_NMLN); + + type utsname is record + sysname : String_NMLN; + nodename : String_NMLN; + release : String_NMLN; + version : String_NMLN; + machine : String_NMLN; + procserial : String_NMLN; + end record; + pragma Convention (C, utsname); + + procedure uname (name : out utsname); + pragma Import (C, uname); + + function PTHREAD_PRIO_INHERIT return int is + name : utsname; + + function Val (C : Character) return Integer; + -- Transform a numeric character ('0' .. '9') to an integer + + --------- + -- Val -- + --------- + + function Val (C : Character) return Integer is + begin + return Character'Pos (C) - Character'Pos ('0'); + end Val; + + -- Start of processing for PTHREAD_PRIO_INHERIT + + begin + if AIX_Version = 0 then + + -- Set AIX_Version + + uname (name); + AIX_Version := Val (name.version (1)) * 10 + Val (name.release (1)); + end if; + + if AIX_Version < 53 then + + -- Under AIX < 5.3, PTHREAD_PRIO_INHERIT is defined as 0 in pthread.h + + return 0; + + else + -- Under AIX >= 5.3, PTHREAD_PRIO_INHERIT is defined as 3 + + return 3; + end if; + end PTHREAD_PRIO_INHERIT; + +end System.OS_Interface; |