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/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
/* updated for triple test, 20003/11/06, Erik Adli */
#include "system.h"
#include <stdio.h>
#include <stdlib.h>
/* CPU usage and Rate monotonic manger statistics */
#include "rtems/cpuuse.h"
// Periods for the various tasks [seconds]
#define PERIOD_TASK_ABSOLUTE 1
#define PERIOD_TASK_RATE_MONOTONIC 2
#define PERIOD_TASK_RELATIVE 3
// TASK 1
//
// * Absolute timing for task 1
// * CPU usage statistics
// * Demo end criteria
//
rtems_task Task_Absolute_Period(
rtems_task_argument unused
)
{
rtems_time_of_day time;
rtems_status_code status;
uint32_t ticks_since_boot;
uint32_t count;
count = 0;
rtems_cpu_usage_reset();
while( 1 ) {
status = rtems_clock_get( RTEMS_CLOCK_GET_TOD, &time );
count++;
// sets end criteria for demo application (60 seconds)
if ( time.second >= 60 ) {
puts( "*** END OF PERIODIC TASKING TRIPLE TEST ***" );
exit( 0 );
}
printf(
"\n\nTask 1 - activating every %d second using "
"absolute time (rtems_task_wake_when)\n",
PERIOD_TASK_ABSOLUTE
);
print_time( " - rtems_clock_get - ", &time, "\n" );
rtems_clock_get( RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &ticks_since_boot );
printf(" - Ticks since boot: %" PRIu32 "\n", ticks_since_boot);
rtems_time_of_day time;
time.year = 1988;
time.month = 12;
time.day = 31;
time.hour = 9;
time.minute = 0;
time.second = count * PERIOD_TASK_ABSOLUTE; // Every N1 seconds
time.ticks = 0; // NB!! 'ticks' is don't care ( = does not work); rtems_task_wait_when has granularity of 1 second ( "taskwakewhen.c" nullifies time.ticks )
status = rtems_task_wake_when( &time );
// dump CPU usage every 5th period
if( 0 == (count % 5) ) {
//CPU_usage_Dump( ); // UNCOMMENT ME FOR WORKING CPU_usage_Dump
}
}
};
// TASK 2
//
// * RM schdeling for task 2
// * Rate Monotonic usage statistics
//
rtems_task Task_Rate_Monotonic_Period(
rtems_task_argument unused
)
{
rtems_time_of_day time;
rtems_status_code status;
uint32_t ticks_since_boot;
rtems_name my_period_name;
rtems_id RM_period;
bool is_RM_created = 0;
uint32_t count;
count = 0;
while( 1 ) {
status = rtems_clock_get( RTEMS_CLOCK_GET_TOD, &time );
count++;
printf( "\n\nTask 2 - activating every %d second using rate monotonic manager to schedule (rtems_rate_monotonic_period)\n", PERIOD_TASK_RATE_MONOTONIC);
print_time( " - rtems_clock_get - ", &time, "\n" );
rtems_clock_get( RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &ticks_since_boot );
printf(" - Ticks since boot: %" PRIu32 "\n", ticks_since_boot);
if( TRUE != is_RM_created ) {
count = 0;
my_period_name = rtems_build_name( 'P', 'E', 'R', '1' );
status = rtems_rate_monotonic_create( my_period_name, &RM_period );
if( RTEMS_SUCCESSFUL != status ) {
printf("RM failed with status: %d\n", status);
exit(1);
}
// Initiate RM periode
status = rtems_rate_monotonic_period( RM_period, get_ticks_per_second() * PERIOD_TASK_RATE_MONOTONIC ); // Every N2 seconds
if( RTEMS_SUCCESSFUL != status ) {
printf("RM failed with status: %d\n", status);
exit(1);
}
is_RM_created = TRUE;
}
// Block until RM period has expired
status = rtems_rate_monotonic_period( RM_period, get_ticks_per_second() * PERIOD_TASK_RATE_MONOTONIC ); // Every N2 seconds
if( RTEMS_SUCCESSFUL != status ) {
if( RTEMS_TIMEOUT != status ) {
printf("RM missed period!\n");
}
printf("RM failed with status: %d\n", status);
exit(1);
}
// dump Rate Monotonic usage every 5th period
if( 0 == (count % 5) ) {
; // rtems_rate_monotonic_report_statistics();
}
}
}
// TASK 3
//
// * relative delay for task 3
//
rtems_task Task_Relative_Period(
rtems_task_argument unused
)
{
rtems_time_of_day time;
rtems_status_code status;
uint32_t ticks_since_boot;
while( 1 ) {
status = rtems_clock_get( RTEMS_CLOCK_GET_TOD, &time );
printf( "\n\nTask 3 - activating after every %d second using relative time (rtems_task_wake_after)\n", PERIOD_TASK_RELATIVE);
print_time( " - rtems_clock_get - ", &time, "\n" );
rtems_clock_get( RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &ticks_since_boot );
printf(" - Ticks since boot: %" PRIu32 "\n", ticks_since_boot); // Note how the ticks are drifting with this method
status = rtems_task_wake_after( get_ticks_per_second() * PERIOD_TASK_RELATIVE ); // Every N3 seconds
}
}
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