Provided by: libdispatch-dev_0~svn197-3.3ubuntu2_amd64
dispatch — the dispatch framework
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_benchmark(3), dispatch_group_create(3), dispatch_object(3), dispatch_once(3), dispatch_queue_create(3), dispatch_semaphore_create(3), dispatch_source_create(3), dispatch_time(3)