dispatch_after_f man page on MacOSX

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dispatch_after(3)	 BSD Library Functions Manual	     dispatch_after(3)

NAME
     dispatch_after — schedule blocks for deferred execution

SYNOPSIS
     #include <dispatch/dispatch.h>

     void
     dispatch_after(dispatch_time_t when, dispatch_queue_t queue,
	 void (^block)(void));

     void
     dispatch_after_f(dispatch_time_t when, dispatch_queue_t queue,
	 void *context, void (*function)(void *));

DESCRIPTION
     The dispatch_after() function submits the block to the given queue at the
     time specified by the when parameter.  The when parameter is a value cre‐
     ated by dispatch_time() or dispatch_walltime().

     For a more detailed description about submitting blocks to queues, see
     dispatch_async(3).

CAVEATS
     dispatch_after() retains the passed queue.

     Specifying DISPATCH_TIME_NOW as the when parameter is supported, but is
     not as efficient as calling dispatch_async().

     The result of passing DISPATCH_TIME_FOREVER as the when parameter is
     undefined.

FUNDAMENTALS
     The dispatch_after() function is a wrapper around dispatch_after_f().

SEE ALSO
     dispatch(3), dispatch_async(3), dispatch_time(3)

Darwin				  May 1, 2009				Darwin
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