Swift: NSTask with 0% cpu

waitUntilWithSleepExample.swift

// This task will run for ever a task get 0% of cpu
// dont use waitUntil because it will consume you cpu
import Foundation

extension Task {
  public func waitUntilWithSleep() {
    while running {
      // sleep for 0.1 seconds
      usleep(10000)
    }
  }
}

I created this method to run a Perfect.org server for ever...

import Foundation

let task = Task()
task.launchPath = "/path/to/my/app/web/server"
while true {
  task.launch()
  task.waitUntilWithSleep()
  print("server restarted")
}