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/*
* Classic API Signal to Task from ISR
*
* COPYRIGHT (c) 1989-2008.
* 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 CONFIGURE_INIT
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ 1
#include "system.h"
volatile bool case_hit;
rtems_id main_task;
rtems_id Semaphore;
Thread_blocking_operation_States getState(void)
{
Objects_Locations location;
Semaphore_Control *sem;
sem = (Semaphore_Control *)_Objects_Get(
&_Semaphore_Information, Semaphore, &location );
if ( location != OBJECTS_LOCAL ) {
puts( "Bad object lookup" );
rtems_test_exit(0);
}
_Thread_Unnest_dispatch();
return sem->Core_control.semaphore.Wait_queue.sync_state;
}
rtems_timer_service_routine test_release_from_isr(
rtems_id timer,
void *arg
)
{
rtems_status_code status;
if ( getState() == THREAD_BLOCKING_OPERATION_NOTHING_HAPPENED ) {
case_hit = TRUE;
}
status = rtems_semaphore_release( Semaphore );
}
rtems_timer_service_routine test_release_with_timeout_from_isr(
rtems_id timer,
void *arg
)
{
rtems_status_code status;
if ( getState() == THREAD_BLOCKING_OPERATION_NOTHING_HAPPENED ) {
/*
* We want to catch the task while it is blocking. Otherwise
* just send and make it happy.
*/
case_hit = TRUE;
}
status = rtems_semaphore_release( Semaphore );
}
rtems_task Init(
rtems_task_argument argument
)
{
rtems_status_code status;
rtems_id timer;
int i;
int max;
int iterations = 0;
puts( "\n\n*** TEST 41 ***" );
main_task = rtems_task_self();
/*
* Timer used in multiple ways
*/
status = rtems_timer_create( 1, &timer );
directive_failed( status, "rtems_timer_create" );
status = rtems_semaphore_create(
rtems_build_name( 'S', 'M', '1', ' ' ),
1,
RTEMS_DEFAULT_ATTRIBUTES,
RTEMS_NO_PRIORITY,
&Semaphore
);
directive_failed( status, "rtems_semaphore_create of SM1" );
/*
* Test semaphore release successful from ISR -- obtain is forever
*/
case_hit = FALSE;
iterations = 0;
max = 1;
while (1) {
if ( case_hit )
break;
status = rtems_timer_fire_after( timer, 1, test_release_from_isr, NULL );
directive_failed( status, "timer_fire_after failed" );
for (i=0 ; i<max ; i++ )
if ( getState() == THREAD_BLOCKING_OPERATION_SATISFIED )
break;
status = rtems_semaphore_obtain( Semaphore, RTEMS_DEFAULT_OPTIONS, 0 );
directive_failed( status, "rtems_semaphore_obtain" );
if ( case_hit == TRUE )
break;
max += 2;
/* with our clock tick, this is about 30 seconds */
if ( ++iterations >= 4 * 1000 * 30)
break;
}
status = rtems_semaphore_release( Semaphore );
directive_failed( status, "rtems_semaphore_release" );
printf(
"Release from ISR hitting synchronization point has %soccurred\n",
(( case_hit == TRUE ) ? "" : "NOT ")
);
/*
* Test semaphore release successful from ISR -- obtain has timeout
*/
case_hit = FALSE;
iterations = 0;
max = 1;
while (1) {
if ( case_hit )
break;
status = rtems_timer_fire_after(
timer, 1, test_release_with_timeout_from_isr, NULL );
directive_failed( status, "timer_fire_after failed" );
for (i=0 ; i<max ; i++ )
if ( getState() == THREAD_BLOCKING_OPERATION_SATISFIED )
break;
status = rtems_semaphore_obtain( Semaphore, RTEMS_DEFAULT_OPTIONS, 10 );
directive_failed( status, "rtems_semaphore_obtain" );
if ( case_hit == TRUE )
break;
max += 2;
/* with our clock tick, this is about 30 seconds */
if ( ++iterations >= 4 * 1000 * 30)
break;
}
printf(
"Release from ISR (with timeout) hitting synchronization "
"point has %soccurred\n",
(( case_hit == TRUE ) ? "" : "NOT ")
);
/*
* Now try for a timeout case -- semaphore must not be available
*/
iterations = 0;
case_hit = FALSE;
max = 1;
puts(
"Run multiple times in attempt to hit threadq timeout synchronization point"
);
while (1) {
for (i=0 ; i<max ; i++ )
if ( getState() == THREAD_BLOCKING_OPERATION_SATISFIED )
break;
status = rtems_semaphore_obtain( Semaphore, RTEMS_DEFAULT_OPTIONS, 1 );
fatal_directive_status( status, RTEMS_TIMEOUT, "rtems_semaphore_obtain" );
if ( ++max > 10240 )
max = 0;
/* with our clock tick, this is about 30 seconds */
if ( ++iterations >= 4 * 1000 * 30)
break;
}
puts( "*** END OF TEST 41 ***" );
rtems_test_exit( 0 );
}
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