OSStatus bt_smartbridge_att_cache_find( const mico_bt_smart_device_t* remote_device, bt_smartbridge_att_cache_t** cache )
{
OSStatus result;
linked_list_node_t* node_found;
if ( remote_device == NULL || cache == NULL )
{
return MICO_BT_BADARG;
}
if ( att_cache_manager == NULL )
{
return MICO_BT_ATT_CACHE_UNINITIALISED;
}
/* Lock protection */
result = mico_rtos_lock_mutex( &att_cache_manager->mutex );
if ( result != MICO_BT_SUCCESS )
{
return result;
}
result = linked_list_find_node( &att_cache_manager->used_list, smartbridge_att_cache_find_by_device_callback, (void*)remote_device, &node_found );
if ( result == MICO_BT_SUCCESS )
{
*cache = (bt_smartbridge_att_cache_t*)node_found->data;
}
/* Unlock protection */
mico_rtos_unlock_mutex( &att_cache_manager->mutex );
return result;
}
// dbFind:
// Search the database for specific deviceId/regId combination
dbEntry_t *dbFind(dbEntry_t *find)
{
linked_list_node_t *found;
if(linked_list_find_node( &db, dbCompare, (void*) find, &found ) == WICED_SUCCESS)
return found->data;
else
return NULL;
}
static OSStatus smartbridge_att_cache_get_free_cache( bt_smartbridge_att_cache_t** free_cache )
{
OSStatus result;
linked_list_node_t* node;
if ( att_cache_manager == NULL )
{
return MICO_BT_ATT_CACHE_UNINITIALISED;
}
/* Lock protection */
result = mico_rtos_lock_mutex( &att_cache_manager->mutex );
if ( result != kNoErr )
{
return result;
}
/* Remove from front of free list */
result = linked_list_remove_node_from_front( &att_cache_manager->free_list, &node );
/* Free list is empty. Remove the oldest one from used list */
if ( result != MICO_BT_SUCCESS )
{
result = linked_list_find_node( &att_cache_manager->used_list, smartbridge_att_cache_get_free_callback, NULL, &node );
if ( result == MICO_BT_SUCCESS )
{
result = linked_list_remove_node( &att_cache_manager->used_list, node );
if ( result == MICO_BT_SUCCESS )
{
mico_bt_smart_attribute_list_t* list = (mico_bt_smart_attribute_list_t*)node->data;
/* Delete list and set data to NULL */
mico_bt_smart_attribute_delete_list( list );
}
}
}
if ( result == MICO_BT_SUCCESS )
{
*free_cache = (bt_smartbridge_att_cache_t*)node->data;
}
/* Unlock protection */
mico_rtos_unlock_mutex( &att_cache_manager->mutex );
return result;
}
