Sets the current thread’s priority.
- iOS 2.0+
- macOS 10.2+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The new priority, specified with a floating point number from 0.0 to 1.0, where 1.0 is highest priority.
true if the priority assignment succeeded,
The priorities in this range are mapped to the operating system's priority values.
Prioritizing Thread Work
Used to indicate the nature and importance of work to the system. Work with higher quality of service classes receive more resources than work with lower quality of service classes whenever there is resource contention.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software