Returns the context information for a CFRunLoopSource object.
- iOS 2.0+
- macOS 10.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Core Foundation
The run loop source to examine.
A pointer to the structure into which the context information for
sourceis to be copied. The information being returned is the same information passed to
Loop Source Create(_: _: _:)
Run loop sources come in two versions with different-sized context structures.
context must point to the correct version of the structure for
source. Before calling this function, you need to initialize the
version member of
context with the version number (either 0 or 1) of