Function

CFRunLoopSourceIsValid

Returns a Boolean value that indicates whether a CFRunLoopSource object is valid and able to fire.

Declaration

Boolean CFRunLoopSourceIsValid(CFRunLoopSourceRef source);

Parameters

source

The run loop source to examine.

Return Value

true if source is valid, otherwise false.

See Also

CFRunLoopSource Miscellaneous Functions

CFRunLoopSourceCreate

Creates a CFRunLoopSource object.

CFRunLoopSourceGetContext

Returns the context information for a CFRunLoopSource object.

CFRunLoopSourceGetOrder

Returns the ordering parameter for a CFRunLoopSource object.

CFRunLoopSourceGetTypeID

Returns the type identifier of the CFRunLoopSource opaque type.

CFRunLoopSourceInvalidate

Invalidates a CFRunLoopSource object, stopping it from ever firing again.

CFRunLoopSourceSignal

Signals a CFRunLoopSource object, marking it as ready to fire.