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/*
* Classic API Signal to Task from ISR
*
* 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.
*
* $Id$
*/
#define TEST_INIT
#include "system.h"
volatile boolean case_hit;
rtems_id main_task;
rtems_id other_task;
rtems_timer_service_routine test_event_from_isr(
rtems_id timer,
void *arg
)
{
rtems_status_code status;
status = rtems_event_send( main_task, 0x01 );
if ( _Event_Sync_state == EVENT_SYNC_SATISFIED )
case_hit = TRUE;
}
rtems_timer_service_routine test_timeout_from_isr(
rtems_id timer,
void *arg
)
{
if ( _Event_Sync_state != EVENT_SYNC_NOTHING_HAPPENED )
return;
/*
* The main task should have timed out and we are in the
* event synchronization critical section with "timeout".
*/
/*
* This event send hits the critical section but sends to
* another task so doesn't impact this critical section.
*/
rtems_event_send( other_task, 0x02 );
/*
* This event send hits the main task but doesn't satisfy
* it's blocking condition so it will still time out.
*/
rtems_event_send( main_task, 0x02 );
/*
* This event send should cancel the main task's time out
* and deliver the interrupt because both occurred simultaneously.
*/
rtems_event_send( main_task, 0x01 );
case_hit = TRUE;
}
rtems_task Init(
rtems_task_argument argument
)
{
rtems_status_code status;
rtems_id timer;
rtems_event_set out;
int i;
int max;
int iterations = 0;
puts( "\n\n*** TEST 39 ***" );
main_task = rtems_task_self();
/*
* Timer used in multiple ways
*/
status = rtems_timer_create( 1, &timer );
directive_failed( status, "rtems_timer_create" );
status = rtems_task_create(
0xa5a5a5a5,
1,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&other_task
);
directive_failed( status, "rtems_task_create" );
/*
* Test Event send successful from ISR
*/
case_hit = FALSE;
max = 1;
while (1) {
if ( case_hit )
break;
status = rtems_timer_fire_after( timer, 1, test_event_from_isr, NULL );
directive_failed( status, "timer_fire_after failed" );
for (i=0 ; i<max ; i++ )
if ( _Event_Sync_state == EVENT_SYNC_SATISFIED )
break;
status = rtems_event_receive( 0x01, RTEMS_DEFAULT_OPTIONS, 0, &out );
directive_failed( status, "rtems_event_receive" );
if ( case_hit == TRUE )
break;
max += 2;
if ( ++iterations >= 0x10000 )
break;
}
printf(
"Event sent from ISR hitting synchronization point has %soccurred\n",
(( case_hit == TRUE ) ? "" : "NOT ")
);
/*
* Now try for a timeout case
*/
case_hit = FALSE;
max = 1;
while (1) {
status = rtems_timer_fire_after( timer, 1, test_timeout_from_isr, NULL );
directive_failed( status, "timer_fire_after failed" );
for (i=0 ; i<max ; i++ )
if ( case_hit )
break;
status = rtems_event_receive( 0x01, RTEMS_DEFAULT_OPTIONS, 1, &out );
if ( status == RTEMS_SUCCESSFUL ) {
break;
}
fatal_directive_status( status, RTEMS_TIMEOUT, "event_receive timeout" );
max += 1;
}
printf(
"Event timeout hitting synchronization point has %soccurred\n",
(( case_hit == TRUE ) ? "" : "NOT ")
);
puts( "*** END OF TEST 39 ***" );
rtems_test_exit( 0 );
}
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