/*
* Exercise thread queue enqueue and dequeue priority
*
* 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.
*
* $Id$
*/
#include <stdio.h>
#include <stdlib.h>
#include <bsp.h>
#include "tmacros.h"
#define MAX_TASKS 20
/*
* Carefully chosen to exercise threadq enqueue/dequeue priority logic.
* Somewhat randomly sorted to ensure than if discipline is FIFO, run-time
* behavior won't be the same when released.
*/
#if (RTEMS_MAXIMUM_PRIORITY >= 64)
rtems_task_priority Priorities[MAX_TASKS] = {
37, 37, 37, 37, /* backward - more 2-n */
2, 2, 2, 2, /* forward - multiple are on 2-n chain */
4, 3, /* forward - search forward arbitrary */
3, 3, 3, 3, /* forward - more 2-n */
38, 37, /* backward - search backward arbitrary */
34, 34, 34, 34, /* backward - multple on 2-n chain */
};
#else
rtems_task_priority Priorities[MAX_TASKS] = {
13, 13, 13, 13, /* backward - more 2-n */
2, 2, 2, 2, /* forward - multiple are on 2-n chain */
4, 3, /* forward - search forward arbitrary */
3, 3, 3, 3, /* forward - more 2-n */
14, 13, /* backward - search backward arbitrary */
12, 12, 12, 12, /* backward - multple on 2-n chain */
};
#endif
rtems_id Semaphore;
rtems_id Task_id[ MAX_TASKS ];
rtems_name Task_name[ MAX_TASKS ];
rtems_task Locker_task(
rtems_task_argument unused
)
{
rtems_id tid;
uint32_t task_index;
rtems_status_code status;
status = rtems_task_ident( RTEMS_SELF, RTEMS_SEARCH_ALL_NODES, &tid );
directive_failed( status, "rtems_task_ident" );
task_index = task_number( tid ) - 1;
status = rtems_semaphore_obtain( Semaphore, RTEMS_DEFAULT_OPTIONS, 0 );
directive_failed( status, "rtems_semaphore_obtain" );
put_name( Task_name[ task_index ], FALSE );
puts( " - unblocked - OK" );
(void) rtems_task_delete( RTEMS_SELF );
}
void do_test(
rtems_attribute attr,
bool extract /* TRUE if extract, not release */
)
{
rtems_status_code status;
int i;
status = rtems_semaphore_create(
rtems_build_name( 'S', 'E', 'M', '0' ), /* name = SEM0 */
0, /* unlocked */
RTEMS_BINARY_SEMAPHORE | attr, /* mutex w/desired discipline */
0, /* IGNORED */
&Semaphore
);
directive_failed( status, "rtems_semaphore_create" );
for (i=0 ; i< MAX_TASKS ; i++ ) {
Task_name[ i ] = rtems_build_name(
'T',
'A',
'0' + (char)(i/10),
'0' + (char)(i%10)
);
status = rtems_task_create(
Task_name[ i ],
Priorities[ i ],
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&Task_id[ i ]
);
directive_failed( status, "rtems_task_create" );
status = rtems_task_start( Task_id[ i ], Locker_task, i );
directive_failed( status, "rtems_task_start" );
status = rtems_task_wake_after( 10 );
directive_failed( status, "rtems_task_wake_after" );
}
for (i=0 ; i< MAX_TASKS ; i++ ) {
if ( extract == FALSE ) {
status = rtems_semaphore_release( Semaphore );
directive_failed( status, "rtems_semaphore_release" );
status = rtems_task_wake_after( 100 );
directive_failed( status, "rtems_task_wake_after" );
} else {
status = rtems_task_delete( Task_id[ i ] );
directive_failed( status, "rtems_task_delete" );
}
}
/* one extra release for the initial state */
status = rtems_semaphore_release( Semaphore );
directive_failed( status, "rtems_semaphore_release" );
/* now delete the semaphore since no one is waiting and it is unlocked */
status = rtems_semaphore_delete( Semaphore );
directive_failed( status, "rtems_semaphore_delete" );
}
rtems_task Init(
rtems_task_argument argument
)
{
puts( "\n\n*** START OF TEST 40 ***" );
if ( sizeof( Priorities ) / sizeof( rtems_task_priority ) != MAX_TASKS ) {
puts( "Priorities table does not have right number of entries" );
exit( 0 );
}
puts( "Exercising blocking discipline w/extract in FIFO order " );
do_test( RTEMS_FIFO, TRUE );
puts( "Exercising blocking discipline w/unblock in FIFO order" );
do_test( RTEMS_FIFO, FALSE );
rtems_test_pause_and_screen_number( 2 );
puts( "Exercising blocking discipline w/extract in priority order " );
do_test( RTEMS_PRIORITY, TRUE );
puts( "Exercising blocking discipline w/unblock in priority order" );
do_test( RTEMS_PRIORITY, FALSE );
puts( "*** END OF TEST 42 ***" );
exit(0);
}
/**************** START OF CONFIGURATION INFORMATION ****************/
#define CONFIGURE_INIT
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_MAXIMUM_TASKS MAX_TASKS+1
#define CONFIGURE_MAXIMUM_SEMAPHORES 1
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#include <rtems/confdefs.h>
/**************** END OF CONFIGURATION INFORMATION ****************/
