Reads to the end of file from the file or communications channel in the background and posts a notification when finished.
- iOS 2.0+
- macOS 10.0+
- tvOS 9.0+
- watchOS 2.0+
- Mac Catalyst 13.0+Beta
The runloop modes in which the read completion notification can be posted.
read for details of this method's operation. The method differs from
read in that
modes specifies the run-loop mode (or modes) in which
NSFile can be posted.
You must call this method from a thread that has an active run loop.