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1026 |
ivang |
/* Priority_task
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*
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* This routine serves as a test task. It verifies the semaphore manager.
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*
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* Input parameters:
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* its_index - priority index
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*
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* Output parameters: NONE
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* pritask.c,v 1.7 2002/08/02 00:52:13 joel Exp
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*/
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#include "system.h"
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rtems_task Priority_task(
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rtems_task_argument its_index
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)
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{
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rtems_interval timeout;
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rtems_task_priority its_priority;
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rtems_task_priority current_priority;
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rtems_status_code status;
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rtems_unsigned32 index;
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its_priority = Task_priority[ its_index ];
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if ( its_priority < 3 )
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timeout = 5 * TICKS_PER_SECOND;
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else
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timeout = RTEMS_NO_TIMEOUT;
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put_name( Priority_task_name[ its_index ], FALSE );
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puts( " - rtems_semaphore_obtain - wait forever on SM2" );
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status = rtems_semaphore_obtain(
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Semaphore_id[ 2 ],
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RTEMS_DEFAULT_OPTIONS,
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timeout
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);
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directive_failed( status, "rtems_semaphore_obtain of SM2" );
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if ( its_priority < 64 ) {
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printf( "PRI%d - WHY AM I HERE? (pri=%d)", its_index, its_priority );
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rtems_test_exit( 0 );
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}
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if ( its_index == 5 )
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puts( "PRI5 - rtems_task_suspend - until all priority tasks blocked" );
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status = rtems_task_suspend( RTEMS_SELF );
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directive_failed( status, "rtems_task_suspend" );
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puts( "PRI5 - rtems_task_delete - all tasks waiting on SM2" );
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for ( index = 1 ; index < 5 ; index++ ) {
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status = rtems_task_delete( Priority_task_id[ index ] );
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directive_failed( status, "rtems_task_delete loop" );
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}
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puts( "PRI5 - rtems_semaphore_obtain - nested" );
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status = rtems_semaphore_obtain(
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Semaphore_id[ 2 ],
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RTEMS_DEFAULT_OPTIONS,
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timeout
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);
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directive_failed( status, "rtems_semaphore_obtain nested" );
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puts( "PRI5 - rtems_semaphore_release - nested" );
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status = rtems_semaphore_release( Semaphore_id[ 2 ] );
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directive_failed( status, "rtems_semaphore_release nested " );
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puts( "PRI5 - rtems_semaphore_release - restore priority" );
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status = rtems_semaphore_release( Semaphore_id[ 2 ] );
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directive_failed( status, "rtems_semaphore_release" );
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status = rtems_task_set_priority(
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RTEMS_SELF,
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RTEMS_CURRENT_PRIORITY,
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¤t_priority
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);
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directive_failed( status, "PRI5 rtems_task_set_priority CURRENT" );
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printf( "PRI5 - priority of PRI5 is %d\n", current_priority );
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(void) rtems_task_suspend( RTEMS_SELF );
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}
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