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|
--
-- TMTEST / SPECIFICATION
--
-- DESCRIPTION:
--
-- This package is the specification for Test 22 of the RTEMS
-- Timing Test Suite.
--
-- DEPENDENCIES:
--
--
--
-- COPYRIGHT (c) 1989-2011.
-- On-Line Applications Research Corporation (OAR).
--
-- The license and distribution terms for this file may in
-- the file LICENSE in this distribution or at
-- http://www.rtems.com/license/LICENSE.
--
with RTEMS;
with RTEMS.TASKS;
package TMTEST is
--
-- Buffer Record similar to that used by RTEMS 3.2.1. Using this
-- avoids changes to the test.
--
type BUFFER is
record
FIELD1 : RTEMS.UNSIGNED32; -- TEMPORARY UNTIL VARIABLE LENGTH
FIELD2 : RTEMS.UNSIGNED32;
FIELD3 : RTEMS.UNSIGNED32;
FIELD4 : RTEMS.UNSIGNED32;
end record;
--
-- The following is the ID of the message queue used for timing operations.
--
MESSAGE_QUEUE_ID : RTEMS.ID;
--
-- The following variable is set to the execution time returned
-- by the timer.
--
END_TIME : RTEMS.UNSIGNED32;
--
-- INIT
--
-- DESCRIPTION:
--
-- This RTEMS task initializes the application.
--
procedure INIT (
ARGUMENT : in RTEMS.TASKS.ARGUMENT
);
pragma Convention (C, INIT);
--
-- HIGH_TASK
--
-- DESCRIPTION:
--
-- This RTEMS task is created by LOW_TASK and executes after
-- LOW_TASK has performed a blocking MESSAGE_QUEUE_RECEIVE.
-- This task then executes and performs a readying
-- MESSAGE_QUEUE_BROADCAST and reports its execution time.
-- Finally, the task suspends itself so LOW_TASK can continue
-- execution.
--
procedure HIGH_TASK (
ARGUMENT : in RTEMS.TASKS.ARGUMENT
);
pragma Convention (C, HIGH_TASK);
--
-- LOW_TASK
--
-- DESCRIPTION:
--
-- This RTEMS task performs a blocking MESSAGE_QUEUE_RECEIVE
-- so that when HIGH_TASK performs a MESSAGE_QUEUE_BROADCAST,
-- there will be a task to be readied. Following this, the
-- execution time for a MESSAGE_QUEUE_BROADCAST to a message
-- queue with no waiting tasks is measured and reported.
-- Then this task performs another blocking MESSAGE_QUEUE_RECEIVE
-- so that when PREEMPT_TASK performs a MESSAGE_QUEUE_BROADCAST,
-- PREEMPT_TASK will be preempted by this task. After control
-- of the processor is transferred back to this task by the
-- preemption, the timer is stopped and the execution time of
-- a preemptive MESSAGE_QUEUE_BROADCAST is reported.
--
procedure LOW_TASK (
ARGUMENT : in RTEMS.TASKS.ARGUMENT
);
pragma Convention (C, LOW_TASK);
--
-- PREEMPT_TASK
--
-- DESCRIPTION:
--
-- This RTEMS task starts the timer and performs a preemptive
-- MESSAGE_QUEUE_BROADCAST.
--
procedure PREEMPT_TASK (
ARGUMENT : in RTEMS.TASKS.ARGUMENT
);
pragma Convention (C, PREEMPT_TASK);
end TMTEST;
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