rtems_status_code rtems_task_set_note(
rtems_id id,
uint32_t notepad,
uint32_t note
)
{
Thread_Control *the_thread;
Objects_Locations location;
RTEMS_API_Control *api;
Thread_Control *executing;
if ( !rtems_configuration_get_notepads_enabled() )
return RTEMS_NOT_CONFIGURED;
/*
* NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would
* be checking an unsigned number for being negative.
*/
if ( notepad > RTEMS_NOTEPAD_LAST )
return RTEMS_INVALID_NUMBER;
/*
* Optimize the most likely case to avoid the Thread_Dispatch.
*/
executing = _Thread_Get_executing();
if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ||
_Objects_Are_ids_equal( id, executing->Object.id ) ) {
api = executing->API_Extensions[ THREAD_API_RTEMS ];
api->Notepads[ notepad ] = note;
return RTEMS_SUCCESSFUL;
}
the_thread = _Thread_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
api->Notepads[ notepad ] = note;
_Objects_Put( &the_thread->Object );
return RTEMS_SUCCESSFUL;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
return _RTEMS_tasks_MP_Send_request_packet(
RTEMS_TASKS_MP_SET_NOTE_REQUEST,
id,
0, /* Not used */
notepad,
note
);
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
static bool _RTEMS_tasks_Create_extension(
Thread_Control *executing,
Thread_Control *created
)
{
RTEMS_API_Control *api;
int i;
size_t to_allocate;
/*
* Notepads must be the last entry in the structure and they
* can be left off if disabled in the configuration.
*/
to_allocate = sizeof( RTEMS_API_Control );
if ( !rtems_configuration_get_notepads_enabled() )
to_allocate -= (RTEMS_NUMBER_NOTEPADS * sizeof(uint32_t));
api = _Workspace_Allocate( to_allocate );
if ( !api )
return false;
created->API_Extensions[ THREAD_API_RTEMS ] = api;
_Event_Initialize( &api->Event );
_Event_Initialize( &api->System_event );
_ASR_Initialize( &api->Signal );
_Thread_Action_initialize( &api->Signal_action, _Signal_Action_handler );
#if !defined(RTEMS_SMP)
created->task_variables = NULL;
#endif
if ( rtems_configuration_get_notepads_enabled() ) {
for (i=0; i < RTEMS_NUMBER_NOTEPADS; i++)
api->Notepads[i] = 0;
}
return true;
}
static bool _RTEMS_tasks_Create_extension(
Thread_Control *executing,
Thread_Control *created
)
{
RTEMS_API_Control *api;
int i;
size_t to_allocate;
/*
* Notepads must be the last entry in the structure and they
* can be left off if disabled in the configuration.
*/
to_allocate = sizeof( RTEMS_API_Control );
if ( !rtems_configuration_get_notepads_enabled() )
to_allocate -= (RTEMS_NUMBER_NOTEPADS * sizeof(uint32_t));
api = _Workspace_Allocate( to_allocate );
if ( !api )
return false;
created->API_Extensions[ THREAD_API_RTEMS ] = api;
api->pending_events = EVENT_SETS_NONE_PENDING;
api->event_condition = 0;
_ASR_Initialize( &api->Signal );
created->task_variables = NULL;
if ( rtems_configuration_get_notepads_enabled() ) {
for (i=0; i < RTEMS_NUMBER_NOTEPADS; i++)
api->Notepads[i] = 0;
}
return true;
}
