DISPATCH_QUEUE_SERIAL A dispatch queue that executes blocks serially in FIFO order. Declaration#define DISPATCH_QUEUE_SERIAL See AlsoCreating a Dispatch Queuedispatch_get_main_queuedispatch_get_global_queuedispatch_queue_createdispatch_queue_create_with_targetDISPATCH_QUEUE_CONCURRENTdispatch_queue_tdispatch_queue_main_tdispatch_queue_global_tdispatch_queue_serial_tdispatch_queue_concurrent_t