run a task at high priority in swift

To run a task at high priority in Swift, you can use DispatchQueue with a DispatchQoS parameter specifying a high priority.

Here's an example code block:

main.swift
let highPriorityQueue = DispatchQueue.global(qos: .userInitiated)
highPriorityQueue.async {
    // Your task to run at high priority
}
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In this code, we create a new DispatchQueue with a high priority DispatchQoS using the .userInitiated QoS class. We then call the async function of the queue, passing in our task as a closure. This will execute the task on a background thread with high priority.

You can adjust the priority level as needed by choosing a different DispatchQoS class. The highest priority class available is .userInteractive. However, note that higher priority tasks can starve lower priority tasks in some cases, so be mindful of this when using priority-based concurrency.