diff options
| author | Matthew Gingell <gingell@adacore.com> | 2007-06-06 12:15:34 +0200 |
|---|---|---|
| committer | Arnaud Charlet <charlet@gcc.gnu.org> | 2007-06-06 12:15:34 +0200 |
| commit | 73d39ad24ed694305c7fa501fb36036636dee40f (patch) | |
| tree | d9753a39210797731160fc7264da236c40f514bd /gcc/ada/s-osinte-aix.adb | |
| parent | 6bb81bc17c6c2c8eeec2218abc5189f798e2ecbe (diff) | |
| download | gcc-73d39ad24ed694305c7fa501fb36036636dee40f.tar.gz | |
s-osinte-aix.adb: map Ada priorities to target priorities appropriately for different scheduling...
2007-04-20 Matthew Gingell <gingell@adacore.com>
* s-osinte-aix.adb: map Ada priorities to target
priorities appropriately for different scheduling policies.
From-SVN: r125367
Diffstat (limited to 'gcc/ada/s-osinte-aix.adb')
| -rw-r--r-- | gcc/ada/s-osinte-aix.adb | 27 |
1 files changed, 17 insertions, 10 deletions
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; |