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122 | ------------------------------------------------------------------------------
-- --
-- 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 --
-- --
-- S p e c --
-- --
-- Copyright (C) 2001-2023, AdaCore --
-- --
-- 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. GNARL 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 the version of this package for Ravenscar bare board targets
-- This package contains all the GNULL primitives that interface directly with
-- the underlying OS.
pragma Restrictions (No_Elaboration_Code);
with System.Multiprocessors;
with System.Parameters;
with System.Tasking;
with System.OS_Interface;
package System.Task_Primitives.Operations is
pragma Preelaborate;
package ST renames System.Tasking;
package OSI renames System.OS_Interface;
Environment_Task : ST.Task_Id := ST.Null_Task;
-- Task ID of the environment task
-- See s-taprop.ads for up to date specs of the following subprograms
procedure Initialize (Environment_Task : ST.Task_Id);
pragma Inline (Initialize);
-- Perform initialization and set up of the environment task for proper
-- operation of the tasking run-time. This must be called once, before any
-- other subprograms of this package are called.
procedure Create_Task
(T : ST.Task_Id;
Wrapper : System.Address;
Stack_Size : System.Parameters.Size_Type;
Priority : ST.Extended_Priority;
Base_CPU : System.Multiprocessors.CPU_Range;
Succeeded : out Boolean);
pragma Inline (Create_Task);
procedure Enter_Task (Self_ID : ST.Task_Id);
pragma Inline (Enter_Task);
procedure Initialize_TCB (Self_ID : ST.Task_Id; Succeeded : out Boolean);
pragma Inline (Initialize_TCB);
function Self return ST.Task_Id;
pragma Inline (Self);
procedure Set_Priority (T : ST.Task_Id; Prio : ST.Extended_Priority);
pragma Inline (Set_Priority);
function Get_Priority (T : ST.Task_Id) return ST.Extended_Priority;
pragma Inline (Get_Priority);
function Get_Affinity
(T : ST.Task_Id) return System.Multiprocessors.CPU_Range;
function Get_CPU (T : ST.Task_Id) return System.Multiprocessors.CPU;
function Get_Thread_Id (T : ST.Task_Id) return OSI.Thread_Id;
-- Return the thread id of the specified task
type Time is new System.OS_Interface.Time;
function Monotonic_Clock return Time;
pragma Inline (Monotonic_Clock);
----------------
-- Extensions --
----------------
procedure Sleep
(Self_ID : ST.Task_Id;
Reason : System.Tasking.Task_States);
pragma Inline (Sleep);
-- The caller should hold no lock when calling this procedure
procedure Delay_Until (Abs_Time : Time);
pragma Inline (Delay_Until);
procedure Wakeup
(T : ST.Task_Id;
Reason : System.Tasking.Task_States);
pragma Inline (Wakeup);
-- The caller should hold no lock when calling this procedure
function Is_Task_Context return Boolean;
pragma Inline (Is_Task_Context);
-- This function returns True if the current execution is in the context
-- of a task, and False if it is an interrupt context.
end System.Task_Primitives.Operations;
|