TFD_QUEUE_SIZE_BC_DUP
if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
#define TFD_QUEUE_BC_SIZE (TFD_QUEUE_SIZE_MAX + TFD_QUEUE_SIZE_BC_DUP)
#define TFD_QUEUE_BC_SIZE (TFD_QUEUE_SIZE_MAX + TFD_QUEUE_SIZE_BC_DUP)
if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
if (read_ptr < TFD_QUEUE_SIZE_BC_DUP)