dispatch(3) Library Functions Manual dispatch(3)

dispatch — the dispatch framework

#include <dispatch/dispatch.h>

The dispatch framework allows blocks to be scheduled for asynchronous and concurrent execution via the core functions described in dispatch_async(3) and dispatch_apply(3).

Dispatch queues are the basic units of organization of blocks. Several queues are created by default, and applications may create additional queues for their own use. See dispatch_queue_create(3) for more information.

Dispatch groups allow applications to track the progress of blocks submitted to queues and take action when the blocks complete. See dispatch_group_create(3) for more information.

The dispatch framework also provides functions to monitor underlying system events and automatically submit event handler blocks to dispatch queues.

dispatch_after(3), dispatch_api(3), dispatch_apply(3), dispatch_async(3), dispatch_data_create(3), dispatch_group_create(3), dispatch_io_create(3), dispatch_io_read(3), dispatch_object(3), dispatch_once(3), dispatch_queue_create(3), dispatch_semaphore_create(3), dispatch_source_create(3), dispatch_time(3)

May 1, 2009 Darwin