3cb8344bd3
2006-10-31 Robert Dewar <dewar@adacore.com> Jose Ruiz <ruiz@adacore.com> * a-dispat.ads, a-diroro.ads, a-diroro.adb: New files. * ali.adb (Get_Name): Properly handle scanning of wide character names encoded with brackets notation. (Known_ALI_Lines): Add S lines to this list. (Scan_ALI): Acquire S (priority specific dispatching) lines. New flag Elaborate_All_Desirable in unit table * ali.ads (Priority_Specific_Dispatching): Add this range of identifiers to be used for Priority_Specific_Dispatching table entries. (ALIs_Record): Add First_Specific_Dispatching and Last_Specific_Dispatching that point to the first and last entries respectively in the priority specific dispatching table for this unit. (Specific_Dispatching): Add this table for storing each S (priority specific dispatching) line encountered in the input ALI file. New flag Elaborate_All_Desirable in unit table * bcheck.adb: (Check_Configuration_Consistency): Add call to Check_Consistent_Dispatching_Policy. (Check_Consistent_Dispatching_Policy): Add this procedure in charge of verifying that the use of Priority_Specific_Dispatching, Task_Dispatching_Policy, and Locking_Policy is consistent across the partition. * bindgen.adb: (Public_Version_Warning): function removed. (Set_PSD_Pragma_Table): Add this procedure in charge of getting the required information from ALI files in order to initialize the table containing the specific dispatching policy. (Gen_Adainit_Ada): Generate the variables required for priority specific dispatching entries (__gl_priority_specific_dispatching and __gl_num_specific_dispatching). (Gen_Adainit_C): Generate the variables required for priority specific dispatching entries (__gl_priority_specific_dispatching and __gl_num_specific_dispatching). (Gen_Output_File): Acquire settings for Priority_Specific_Dispatching pragma entries. (Gen_Restrictions_String_1, Gen_Restrictions_String_2): Removed. (Gen_Restrictions_Ada, Gen_Restrictions_C, Set_Boolean): New procedures. (Tab_To): Removed. (Gen_Output_File_Ada/_C): Set directly __gl_xxx variables instead of a call to gnat_set_globals. Generate a string containing settings from Priority_Specific_Dispatching pragma entries. (Gen_Object_Files_Options): Do not include the runtime libraries when pragma No_Run_Time is specified. * init.c (__gnat_install_handler, case FreeBSD): Use SA_SIGINFO, for consistency with s-intman-posix.adb. (__gnat_error_handler, case FreeBSD): Account for the fact that the handler is installed with SA_SIGINFO. (__gnat_adjust_context_for_raise, FreeBSD case): New function for FreeBSD ZCX support, copied from Linux version. Add MaRTE-specific definitions for the linux target. Redefine sigaction, sigfillset, and sigemptyset so the routines defined by MaRTE. (__gl_priority_specific_dispatching): Add this variable that stores the string containing priority specific dispatching policies in the partition. (__gl_num_specific_dispatching): Add this variable that indicates the highest priority for which a priority specific dispatching pragma applies. (__gnat_get_specific_dispatching): Add this routine that returns the priority specific dispatching policy, as set by a Priority_Specific_Dispatching pragma appearing anywhere in the current partition. The input argument is the priority number, and the result is the upper case first character of the policy name. (__gnat_set_globals): Now a dummy function. (__gnat_handle_vms_condition): Feed adjust_context_for_raise with mechargs instead of sigargs, as the latter can be retrieved from the former and sigargs is not what we want on ia64. (__gnat_adjust_context_for_raise, alpha-vms): Fetch sigargs from the mechargs argument. (__gnat_adjust_context_for_raise, ia64-vms): New function. (tasking_error): Remove unused symbol. (_abort_signal): Move this symbol to the IRIX specific part since this is the only target that uses this definition. (Check_Abort_Status): Move this symbol to the IRIX specific part since this is the only target that uses this definition. (Lock_Task): Remove unused symbol. (Unlock_Task): Remove unused symbol. * lib-writ.adb (Write_ALI): Output new S lines for Priority_Specific_Dispatching pragmas. Implement new flag BD for elaborate body desirable * lib-writ.ads: Document S lines for Priority Specific Dispatching. (Specific_Dispatching): Add this table for storing the entries corresponding to Priority_Specific_Dispatching pragmas. Document new BD flag for elaborate body desirable * par-prag.adb (Prag): Add Priority_Specific_Dispatching to the list of known pragmas. From-SVN: r118243
95 lines
3.9 KiB
Ada
95 lines
3.9 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- A D A . D I S P A T C H I N G . R O U N D _ R O B I N --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2006, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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package body Ada.Dispatching.Round_Robin is
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-----------------
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-- Set_Quantum --
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-----------------
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procedure Set_Quantum
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(Pri : System.Priority;
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Quantum : Ada.Real_Time.Time_Span)
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is
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pragma Unreferenced (Quantum);
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begin
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if not Is_Round_Robin (Pri) then
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raise Dispatching_Policy_Error;
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end if;
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end Set_Quantum;
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-----------------
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-- Set_Quantum --
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-----------------
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procedure Set_Quantum
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(Low, High : System.Priority;
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Quantum : Ada.Real_Time.Time_Span)
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is
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pragma Unreferenced (Quantum);
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begin
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for Index in Low .. High loop
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if not Is_Round_Robin (Index) then
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raise Dispatching_Policy_Error;
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end if;
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end loop;
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end Set_Quantum;
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--------------------
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-- Actual_Quantum --
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--------------------
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function Actual_Quantum
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(Pri : System.Priority) return Ada.Real_Time.Time_Span
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is
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begin
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if Is_Round_Robin (Pri) then
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return Default_Quantum;
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else
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raise Dispatching_Policy_Error;
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end if;
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end Actual_Quantum;
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--------------------
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-- Is_Round_Robin --
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--------------------
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function Is_Round_Robin (Pri : System.Priority) return Boolean is
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function Get_Policy (Prio : System.Any_Priority) return Character;
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pragma Import (C, Get_Policy, "__gnat_get_specific_dispatching");
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begin
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return Get_Policy (Pri) = 'R';
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end Is_Round_Robin;
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end Ada.Dispatching.Round_Robin;
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