C++ (Cpp) _RTEMS_tasks_MP_Set_priorityの例

コード例 #1

ファイル: tasksetpriority.c プロジェクト: valabojub79/rtems-iAptiv-Port

rtems_status_code rtems_task_set_priority(
  rtems_id             id,
  rtems_task_priority  new_priority,
  rtems_task_priority *old_priority_p
)
{
  Thread_Control          *the_thread;
  ISR_lock_Context         lock_context;
  const Scheduler_Control *scheduler;
  Priority_Control         old_priority;
  rtems_status_code        status;

  if ( old_priority_p == NULL ) {
    return RTEMS_INVALID_ADDRESS;
  }

  the_thread = _Thread_Get( id, &lock_context );

  if ( the_thread == NULL ) {
#if defined(RTEMS_MULTIPROCESSING)
    return _RTEMS_tasks_MP_Set_priority( id, new_priority, old_priority_p );
#else
    return RTEMS_INVALID_ID;
#endif
  }

  if ( new_priority != RTEMS_CURRENT_PRIORITY ) {
    RTEMS_tasks_Set_priority_context  context;
    Per_CPU_Control                  *cpu_self;

    cpu_self = _Thread_Dispatch_disable_critical( &lock_context );
    _ISR_lock_ISR_enable( &lock_context );

    context.new_priority = new_priority;
    _Thread_Change_priority(
      the_thread,
      0,
      &context,
      _RTEMS_tasks_Set_priority_filter,
      false
    );

    _Thread_Dispatch_enable( cpu_self );
    scheduler = context.scheduler;
    old_priority = context.old_priority;
    status = context.status;
  } else {
    _Thread_State_acquire_critical( the_thread, &lock_context );
    scheduler = _Scheduler_Get_own( the_thread );
    old_priority = _Thread_Get_priority( the_thread );
    _Thread_State_release( the_thread, &lock_context );
    status = RTEMS_SUCCESSFUL;
  }

  *old_priority_p = _RTEMS_Priority_From_core( scheduler, old_priority );
  return status;
}

コード例 #2

ファイル: tasksetpriority.c プロジェクト: gedare/rtems

rtems_status_code rtems_task_set_priority(
  rtems_id             id,
  rtems_task_priority  new_priority,
  rtems_task_priority *old_priority_p
)
{
  Thread_Control          *the_thread;
  Thread_queue_Context     queue_context;
  const Scheduler_Control *scheduler;
  Priority_Control         old_priority;
  rtems_status_code        status;

  if ( old_priority_p == NULL ) {
    return RTEMS_INVALID_ADDRESS;
  }

  _Thread_queue_Context_initialize( &queue_context );
  _Thread_queue_Context_clear_priority_updates( &queue_context );
  the_thread = _Thread_Get( id, &queue_context.Lock_context.Lock_context );

  if ( the_thread == NULL ) {
#if defined(RTEMS_MULTIPROCESSING)
    return _RTEMS_tasks_MP_Set_priority( id, new_priority, old_priority_p );
#else
    return RTEMS_INVALID_ID;
#endif
  }

  _Thread_Wait_acquire_critical( the_thread, &queue_context );

  scheduler = _Thread_Scheduler_get_home( the_thread );
  old_priority = _Thread_Get_priority( the_thread );

  if ( new_priority != RTEMS_CURRENT_PRIORITY ) {
    status = _RTEMS_tasks_Set_priority(
      the_thread,
      scheduler,
      new_priority,
      &queue_context
    );
  } else {
    _Thread_Wait_release( the_thread, &queue_context );
    status = RTEMS_SUCCESSFUL;
  }

  *old_priority_p = _RTEMS_Priority_From_core( scheduler, old_priority );
  return status;
}