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CFRunLoopTimerCallBack

Callback invoked when a CFRunLoopTimer object fires.

Declaration

typealias CFRunLoopTimerCallBack = (CFRunLoopTimer?, UnsafeMutableRawPointer?) -> Void

Parameters

  • timer:

    The run loop timer that is firing.

  • info:

    The info member of the Cfrunlooptimercontext structure that was used when creating the run loop timer.

Discussion

If timer repeats, the run loop automatically schedules the next firing time after calling this function, unless you manually update the firing time within this callback by calling CFRunLoopTimerSetNextFireDate(_:_:). If timer does not repeat, the run loop invalidates timer.

You specify this callback when you create the timer with CFRunLoopTimerCreate(_:_:_:_:_:_:_:).