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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2012, 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- --
-- ware Foundation; either version 3, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
-- This is a no tasking version of this package
-- This package contains all the GNULL primitives that interface directly with
-- the underlying OS.
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.
package body System.Task_Primitives.Operations is
use System.Tasking;
use System.Parameters;
pragma Warnings (Off);
-- Turn off warnings since so many unreferenced parameters
--------------
-- Specific --
--------------
-- Package Specific contains target specific routines, and the body of
-- this package is target specific.
package Specific is
procedure Set (Self_Id : Task_Id);
pragma Inline (Set);
-- Set the self id for the current task
end Specific;
package body Specific is
---------
-- Set --
---------
procedure Set (Self_Id : Task_Id) is
begin
null;
end Set;
end Specific;
----------------------------------
-- ATCB allocation/deallocation --
----------------------------------
package body ATCB_Allocation is separate;
-- The body of this package is shared across several targets
----------------
-- Abort_Task --
----------------
procedure Abort_Task (T : Task_Id) is
begin
null;
end Abort_Task;
----------------
-- Check_Exit --
----------------
function Check_Exit (Self_ID : ST.Task_Id) return Boolean is
begin
return True;
end Check_Exit;
--------------------
-- Check_No_Locks --
--------------------
function Check_No_Locks (Self_ID : ST.Task_Id) return Boolean is
begin
return True;
end Check_No_Locks;
-------------------
-- Continue_Task --
-------------------
function Continue_Task (T : ST.Task_Id) return Boolean is
begin
return False;
end Continue_Task;
-------------------
-- Current_State --
-------------------
function Current_State (S : Suspension_Object) return Boolean is
begin
return False;
end Current_State;
----------------------
-- Environment_Task --
----------------------
function Environment_Task return Task_Id is
begin
return null;
end Environment_Task;
-----------------
-- Create_Task --
-----------------
procedure Create_Task
(T : Task_Id;
Wrapper : System.Address;
Stack_Size : System.Parameters.Size_Type;
Priority : System.Any_Priority;
Succeeded : out Boolean)
is
begin
Succeeded := False;
end Create_Task;
----------------
-- Enter_Task --
----------------
procedure Enter_Task (Self_ID : Task_Id) is
begin
null;
end Enter_Task;
---------------
-- Exit_Task --
---------------
procedure Exit_Task is
begin
null;
end Exit_Task;
--------------
-- Finalize --
--------------
procedure Finalize (S : in out Suspension_Object) is
begin
null;
end Finalize;
-------------------
-- Finalize_Lock --
-------------------
procedure Finalize_Lock (L : not null access Lock) is
begin
null;
end Finalize_Lock;
procedure Finalize_Lock (L : not null access RTS_Lock) is
begin
null;
end Finalize_Lock;
------------------
-- Finalize_TCB --
------------------
procedure Finalize_TCB (T : Task_Id) is
begin
null;
end Finalize_TCB;
------------------
-- Get_Priority --
------------------
function Get_Priority (T : Task_Id) return System.Any_Priority is
begin
return 0;
end Get_Priority;
--------------------
-- Get_Thread_Id --
--------------------
function Get_Thread_Id (T : ST.Task_Id) return OSI.Thread_Id is
begin
return OSI.Thread_Id (T.Common.LL.Thread);
end Get_Thread_Id;
----------------
-- Initialize --
----------------
procedure Initialize (Environment_Task : Task_Id) is
No_Tasking : Boolean;
begin
raise Program_Error with "tasking not implemented on this configuration";
end Initialize;
procedure Initialize (S : in out Suspension_Object) is
begin
null;
end Initialize;
---------------------
-- Initialize_Lock --
---------------------
procedure Initialize_Lock
(Prio : System.Any_Priority;
L : not null access Lock)
is
begin
null;
end Initialize_Lock;
procedure Initialize_Lock
(L : not null access RTS_Lock; Level : Lock_Level) is
begin
null;
end Initialize_Lock;
--------------------
-- Initialize_TCB --
--------------------
procedure Initialize_TCB (Self_ID : Task_Id; Succeeded : out Boolean) is
begin
Succeeded := False;
end Initialize_TCB;
-------------------
-- Is_Valid_Task --
-------------------
function Is_Valid_Task return Boolean is
begin
return False;
end Is_Valid_Task;
--------------
-- Lock_RTS --
--------------
procedure Lock_RTS is
begin
null;
end Lock_RTS;
---------------------
-- Monotonic_Clock --
---------------------
function Monotonic_Clock return Duration is
begin
return 0.0;
end Monotonic_Clock;
---------------
-- Read_Lock --
---------------
procedure Read_Lock
(L : not null access Lock;
Ceiling_Violation : out Boolean)
is
begin
Ceiling_Violation := False;
end Read_Lock;
-----------------------------
-- Register_Foreign_Thread --
-----------------------------
function Register_Foreign_Thread return Task_Id is
begin
return null;
end Register_Foreign_Thread;
-----------------
-- Resume_Task --
-----------------
function Resume_Task
(T : ST.Task_Id;
Thread_Self : OSI.Thread_Id) return Boolean
is
begin
return False;
end Resume_Task;
-------------------
-- RT_Resolution --
-------------------
function RT_Resolution return Duration is
begin
return 10#1.0#E-6;
end RT_Resolution;
----------
-- Self --
----------
function Self return Task_Id is
begin
return Null_Task;
end Self;
-----------------
-- Set_Ceiling --
-----------------
procedure Set_Ceiling
(L : not null access Lock;
Prio : System.Any_Priority)
is
begin
null;
end Set_Ceiling;
---------------
-- Set_False --
---------------
procedure Set_False (S : in out Suspension_Object) is
begin
null;
end Set_False;
------------------
-- Set_Priority --
------------------
procedure Set_Priority
(T : Task_Id;
Prio : System.Any_Priority;
Loss_Of_Inheritance : Boolean := False)
is
begin
null;
end Set_Priority;
-----------------------
-- Set_Task_Affinity --
-----------------------
procedure Set_Task_Affinity (T : ST.Task_Id) is
begin
null;
end Set_Task_Affinity;
--------------
-- Set_True --
--------------
procedure Set_True (S : in out Suspension_Object) is
begin
null;
end Set_True;
-----------
-- Sleep --
-----------
procedure Sleep (Self_ID : Task_Id; Reason : System.Tasking.Task_States) is
begin
null;
end Sleep;
-----------------
-- Stack_Guard --
-----------------
procedure Stack_Guard (T : ST.Task_Id; On : Boolean) is
begin
null;
end Stack_Guard;
------------------
-- Suspend_Task --
------------------
function Suspend_Task
(T : ST.Task_Id;
Thread_Self : OSI.Thread_Id) return Boolean
is
begin
return False;
end Suspend_Task;
--------------------
-- Stop_All_Tasks --
--------------------
procedure Stop_All_Tasks is
begin
null;
end Stop_All_Tasks;
---------------
-- Stop_Task --
---------------
function Stop_Task (T : ST.Task_Id) return Boolean is
pragma Unreferenced (T);
begin
return False;
end Stop_Task;
------------------------
-- Suspend_Until_True --
------------------------
procedure Suspend_Until_True (S : in out Suspension_Object) is
begin
null;
end Suspend_Until_True;
-----------------
-- Timed_Delay --
-----------------
procedure Timed_Delay
(Self_ID : Task_Id;
Time : Duration;
Mode : ST.Delay_Modes)
is
begin
null;
end Timed_Delay;
-----------------
-- Timed_Sleep --
-----------------
procedure Timed_Sleep
(Self_ID : Task_Id;
Time : Duration;
Mode : ST.Delay_Modes;
Reason : System.Tasking.Task_States;
Timedout : out Boolean;
Yielded : out Boolean)
is
begin
Timedout := False;
Yielded := False;
end Timed_Sleep;
------------
-- Unlock --
------------
procedure Unlock (L : not null access Lock) is
begin
null;
end Unlock;
procedure Unlock
(L : not null access RTS_Lock;
Global_Lock : Boolean := False)
is
begin
null;
end Unlock;
procedure Unlock (T : Task_Id) is
begin
null;
end Unlock;
----------------
-- Unlock_RTS --
----------------
procedure Unlock_RTS is
begin
null;
end Unlock_RTS;
------------
-- Wakeup --
------------
procedure Wakeup (T : Task_Id; Reason : System.Tasking.Task_States) is
begin
null;
end Wakeup;
----------------
-- Write_Lock --
----------------
procedure Write_Lock
(L : not null access Lock;
Ceiling_Violation : out Boolean)
is
begin
Ceiling_Violation := False;
end Write_Lock;
procedure Write_Lock
(L : not null access RTS_Lock;
Global_Lock : Boolean := False)
is
begin
null;
end Write_Lock;
procedure Write_Lock (T : Task_Id) is
begin
null;
end Write_Lock;
-----------
-- Yield --
-----------
procedure Yield (Do_Yield : Boolean := True) is
begin
null;
end Yield;
end System.Task_Primitives.Operations;