void _Thread_Close(
Thread_Control *the_thread,
Thread_Control *executing,
Thread_Close_context *context
)
{
context->cancel = the_thread;
_Thread_queue_Context_set_enqueue_callout(
&context->Base,
_Thread_Close_enqueue_callout
);
_Thread_queue_Context_set_no_timeout( &context->Base );
_Thread_State_acquire_critical(
the_thread,
&context->Base.Lock_context.Lock_context
);
_Thread_Join(
the_thread,
STATES_WAITING_FOR_JOIN,
executing,
&context->Base
);
}
rtems_status_code rtems_region_get_segment(
rtems_id id,
uintptr_t size,
rtems_option option_set,
rtems_interval timeout,
void **segment
)
{
rtems_status_code status;
Region_Control *the_region;
if ( segment == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
*segment = NULL;
if ( size == 0 ) {
return RTEMS_INVALID_SIZE;
}
the_region = _Region_Get_and_lock( id );
if ( the_region == NULL ) {
return RTEMS_INVALID_ID;
}
if ( size > the_region->maximum_segment_size ) {
status = RTEMS_INVALID_SIZE;
} else {
void *the_segment;
the_segment = _Region_Allocate_segment( the_region, size );
if ( the_segment != NULL ) {
*segment = the_segment;
status = RTEMS_SUCCESSFUL;
} else if ( _Options_Is_no_wait( option_set ) ) {
status = RTEMS_UNSATISFIED;
} else {
Thread_queue_Context queue_context;
Thread_Control *executing;
_Thread_queue_Context_initialize( &queue_context );
_Thread_queue_Acquire( &the_region->Wait_queue, &queue_context );
executing = _Thread_Executing;
executing->Wait.count = size;
executing->Wait.return_argument = segment;
/* FIXME: This is a home grown condition variable */
_Thread_queue_Context_set_thread_state(
&queue_context,
STATES_WAITING_FOR_SEGMENT
);
_Thread_queue_Context_set_timeout_ticks( &queue_context, timeout );
_Thread_queue_Context_set_enqueue_callout(
&queue_context,
_Region_Enqueue_callout
);
_Thread_queue_Enqueue(
&the_region->Wait_queue.Queue,
the_region->wait_operations,
executing,
&queue_context
);
return _Status_Get_after_wait( executing );
}
}
_Region_Unlock( the_region );
return status;
}
