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--
-- TMTEST / SPECIFICATION
--
-- DESCRIPTION:
--
-- This package is the specification for Test 22 of the RTEMS
-- Timing Test Suite.
--
-- DEPENDENCIES:
--
--
--
-- COPYRIGHT (c) 1989-1997.
-- On-Line Applications Research Corporation (OAR).
-- Copyright assigned to U.S. Government, 1994.
--
-- The license and distribution terms for this file may in
-- the file LICENSE in this distribution or at
-- http://www.OARcorp.com/rtems/license.html.
--
-- $Id$
--
with TIMER_DRIVER;
with RTEMS;
package TMTEST is
--
-- 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.TASK_ARGUMENT
);
--
-- 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.TASK_ARGUMENT
);
--
-- 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.TASK_ARGUMENT
);
--
-- PREEMPT_TASK
--
-- DESCRIPTION:
--
-- This RTEMS task starts the timer and performs a preemptive
-- MESSAGE_QUEUE_BROADCAST.
--
procedure PREEMPT_TASK (
ARGUMENT : in RTEMS.TASK_ARGUMENT
);
--
-- This is the Initialization Tasks Table for this test.
--
INITIALIZATION_TASKS : aliased RTEMS.INITIALIZATION_TASKS_TABLE( 1 .. 1 ) :=
(1=>
(
RTEMS.BUILD_NAME( 'U', 'I', '1', ' ' ), -- task name
2048, -- stack size
1, -- priority
RTEMS.DEFAULT_ATTRIBUTES, -- attributes
TMTEST.INIT'ACCESS, -- entry point
RTEMS.NO_PREEMPT, -- initial mode
0 -- argument list
)
);
--
-- This is the Configuration Table for this test.
--
CONFIGURATION : aliased RTEMS.CONFIGURATION_TABLE := (
RTEMS.NULL_ADDRESS, -- will be replaced by BSP
256 * 1024, -- executive RAM size
103, -- maximum # tasks
0, -- maximum # timers
0, -- maximum # semaphores
1, -- maximum # message queues
101, -- maximum # messages
0, -- maximum # partitions
0, -- maximum # regions
0, -- maximum # dp memory areas
0, -- maximum # periods
0, -- maximum # user extensions
RTEMS.MILLISECONDS_TO_MICROSECONDS(10), -- # us in a tick
0 -- # ticks in a timeslice
);
end TMTEST;
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