| ----------------------------------------------------------------------- |
| -- Code Archetypes for the CHESS Component Model -- |
| -- -- |
| -- Copyright (C) 2011-2012 -- |
| -- University of Padova, ITALY -- |
| -- -- |
| -- Author: Marco Panunzio panunzio@math.unipd.it -- |
| -- -- |
| -- All rights reserved. This program and the accompanying materials -- |
| -- are made available under the terms of the Eclipse Public License -- |
| -- v1.0 which accompanies this distribution, and is available at -- |
| -- http://www.eclipse.org/legal/epl-v20.html -- |
| ----------------------------------------------------------------------- |
| |
| with System_Time; |
| with Ada.Text_IO; use Ada.Text_IO; |
| |
| package body Cyclic_Task is |
| |
| use Ada.Real_Time; |
| |
| task body Thread_T is |
| Task_Static_Offset : constant Time_Span := Milliseconds(Static_Offset); |
| Task_Period : constant Time_Span := Milliseconds(Period); |
| Next_Time : Time := System_Time.System_Start_Time + |
| System_Time.Task_Activation_Delay + Task_Static_Offset; |
| Assigned_Task_ID : constant Task_Gen_ID := My_Task_ID; |
| Release_Time : Time; |
| |
| begin |
| -- Suspend the task until first release; |
| delay until Next_Time; |
| |
| |
| Put("Task "); |
| Put(Natural'Image(Natural(Assigned_Task_ID))); |
| Put_Line(" first activation"); |
| |
| Task_Loop : |
| loop |
| -- First action : enqueue for release |
| Enqueue_for_Release.all (Release_Time); |
| |
| -- Execute the sequential operation |
| Operation.all; |
| |
| -- Calculate new release time and suspend |
| Next_Time:= Next_Time + Task_Period; |
| delay until Next_Time; |
| |
| end loop Task_Loop; |
| |
| end Thread_T; |
| |
| -- procedure Initialize is |
| -- begin |
| -- null; |
| -- end Initialize; |
| |
| end Cyclic_Task; |
