Get current dispatch queue in Swift

DispatchQueue+Current.swift

extension DispatchQueue {
    private static let dispatch_get_current_queue = dlsym(dlopen(nil, RTLD_GLOBAL), "dispatch_get_current_queue")
    
    static var current: DispatchQueue {
        dispatch_get_current_queue.map {
            unsafeBitCast($0, to: (@convention(c) () -> Unmanaged<DispatchQueue>).self)().takeUnretainedValue()
        } ?? .global(qos: .background)
    }
}

It works, Thanks a lot!