-- --
-- B o d y --
-- --
--- Copyright (C) 1997-2006, Free Software Fundation, Inc. --
+-- Copyright (C) 1997-2007, 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- --
-- 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.
+-- 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
return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6;
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");
+
+ begin
+ -- For the case SCHED_OTHER the only valid priority across all supported
+ -- versions of AIX is 1. 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 = ' ' then
+ return 1;
+ else
+ return Interfaces.C.int (Prio) + 1;
+ end if;
+ end To_Target_Priority;
+
-----------------
-- To_Timespec --
-----------------
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 is negative due to a round-up, adjust for positive F value
if F < 0.0 then
S := S - 1;
S := long (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 is negative due to a round-up, adjust for positive F value
if F < 0.0 then
S := S - 1;
-- 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;
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