From b0792e0b7301d96e0afb031b755ea761140b3210 Mon Sep 17 00:00:00 2001 From: charlet Date: Wed, 6 Jun 2007 10:15:34 +0000 Subject: 2007-04-20 Matthew Gingell * s-osinte-aix.adb: map Ada priorities to target priorities appropriately for different scheduling policies. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125367 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ada/s-osinte-aix.adb | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) (limited to 'gcc/ada/s-osinte-aix.adb') diff --git a/gcc/ada/s-osinte-aix.adb b/gcc/ada/s-osinte-aix.adb index b56282b251b..469ce3bfbb4 100644 --- a/gcc/ada/s-osinte-aix.adb +++ b/gcc/ada/s-osinte-aix.adb @@ -6,7 +6,7 @@ -- -- -- 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- -- @@ -34,8 +34,8 @@ -- 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 @@ -62,11 +62,20 @@ package body System.OS_Interface is 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 - -- Priorities on AIX are defined in the range 1 .. 127, so we - -- map 0 .. 126 to 1 .. 127. + -- 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. - return Interfaces.C.int (Prio) + 1; + if Dispatching_Policy = ' ' then + return 1; + else + return Interfaces.C.int (Prio) + 1; + end if; end To_Target_Priority; ----------------- @@ -81,8 +90,7 @@ package body System.OS_Interface is 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; @@ -105,8 +113,7 @@ package body System.OS_Interface is 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; -- cgit v1.2.1