rtems_status_code rtems_region_create(
rtems_name name,
void *starting_address,
uintptr_t length,
uintptr_t page_size,
rtems_attribute attribute_set,
rtems_id *id
)
{
rtems_status_code return_status;
Region_Control *the_region;
if ( !rtems_is_name_valid( name ) )
return RTEMS_INVALID_NAME;
if ( !starting_address )
return RTEMS_INVALID_ADDRESS;
if ( !id )
return RTEMS_INVALID_ADDRESS;
the_region = _Region_Allocate();
if ( !the_region )
return_status = RTEMS_TOO_MANY;
else {
_Thread_queue_Initialize( &the_region->Wait_queue );
if ( _Attributes_Is_priority( attribute_set ) ) {
the_region->wait_operations = &_Thread_queue_Operations_priority;
} else {
the_region->wait_operations = &_Thread_queue_Operations_FIFO;
}
the_region->maximum_segment_size = _Heap_Initialize(
&the_region->Memory, starting_address, length, page_size
);
if ( !the_region->maximum_segment_size ) {
_Region_Free( the_region );
return_status = RTEMS_INVALID_SIZE;
} else {
the_region->attribute_set = attribute_set;
_Objects_Open(
&_Region_Information,
&the_region->Object,
(Objects_Name) name
);
*id = the_region->Object.id;
return_status = RTEMS_SUCCESSFUL;
}
}
_Objects_Allocator_unlock();
return return_status;
}
rtems_status_code rtems_region_create(
rtems_name name,
void *starting_address,
uintptr_t length,
uintptr_t page_size,
rtems_attribute attribute_set,
rtems_id *id
)
{
rtems_status_code return_status;
Region_Control *the_region;
if ( !rtems_is_name_valid( name ) )
return RTEMS_INVALID_NAME;
if ( !starting_address )
return RTEMS_INVALID_ADDRESS;
if ( !id )
return RTEMS_INVALID_ADDRESS;
_RTEMS_Lock_allocator(); /* to prevent deletion */
the_region = _Region_Allocate();
if ( !the_region )
return_status = RTEMS_TOO_MANY;
else {
the_region->maximum_segment_size = _Heap_Initialize(
&the_region->Memory, starting_address, length, page_size
);
if ( !the_region->maximum_segment_size ) {
_Region_Free( the_region );
return_status = RTEMS_INVALID_SIZE;
}
else {
the_region->starting_address = starting_address;
the_region->length = length;
the_region->page_size = page_size;
the_region->attribute_set = attribute_set;
the_region->number_of_used_blocks = 0;
_Thread_queue_Initialize(
&the_region->Wait_queue,
_Attributes_Is_priority( attribute_set ) ?
THREAD_QUEUE_DISCIPLINE_PRIORITY : THREAD_QUEUE_DISCIPLINE_FIFO,
STATES_WAITING_FOR_SEGMENT,
RTEMS_TIMEOUT
);
_Objects_Open(
&_Region_Information,
&the_region->Object,
(Objects_Name) name
);
*id = the_region->Object.id;
return_status = RTEMS_SUCCESSFUL;
}
}
_RTEMS_Unlock_allocator();
return return_status;
}
