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Diffstat (limited to 'gcc/ada/a-diroro.adb')
| -rw-r--r-- | gcc/ada/a-diroro.adb | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/gcc/ada/a-diroro.adb b/gcc/ada/a-diroro.adb new file mode 100644 index 0000000..966058e --- /dev/null +++ b/gcc/ada/a-diroro.adb @@ -0,0 +1,94 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . D I S P A T C H I N G . R O U N D _ R O B I N -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2006, Free Software Foundation, Inc. -- +-- -- +-- GNAT 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. 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, 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. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +package body Ada.Dispatching.Round_Robin is + + ----------------- + -- Set_Quantum -- + ----------------- + + procedure Set_Quantum + (Pri : System.Priority; + Quantum : Ada.Real_Time.Time_Span) + is + pragma Unreferenced (Quantum); + begin + if not Is_Round_Robin (Pri) then + raise Dispatching_Policy_Error; + end if; + end Set_Quantum; + + ----------------- + -- Set_Quantum -- + ----------------- + + procedure Set_Quantum + (Low, High : System.Priority; + Quantum : Ada.Real_Time.Time_Span) + is + pragma Unreferenced (Quantum); + begin + for Index in Low .. High loop + if not Is_Round_Robin (Index) then + raise Dispatching_Policy_Error; + end if; + end loop; + end Set_Quantum; + + -------------------- + -- Actual_Quantum -- + -------------------- + + function Actual_Quantum + (Pri : System.Priority) return Ada.Real_Time.Time_Span + is + begin + if Is_Round_Robin (Pri) then + return Default_Quantum; + else + raise Dispatching_Policy_Error; + end if; + end Actual_Quantum; + + -------------------- + -- Is_Round_Robin -- + -------------------- + + function Is_Round_Robin (Pri : System.Priority) return Boolean is + function Get_Policy (Prio : System.Any_Priority) return Character; + pragma Import (C, Get_Policy, "__gnat_get_specific_dispatching"); + begin + return Get_Policy (Pri) = 'R'; + end Is_Round_Robin; + +end Ada.Dispatching.Round_Robin; |