Time_Test.swift

import SwiftUI
import MachO
import sys_time

struct ContentView: View {
  @State private var timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()
    var body: some View {
        VStack {
            Image(systemName: "globe")
                .imageScale(.large)
                .foregroundStyle(.tint)
            Text("Hello, world!")
        }
        .padding()
        .onReceive(timer) { input in
          let time = withUnsafeTemporaryAllocation(of: timeval.self, capacity: 1) { ptr in
            let size = withUnsafeTemporaryAllocation(of: Int.self, capacity: 1) { ptr_2 in
              ptr_2.baseAddress!.pointee = MemoryLayout<timeval>.size
              assert(sysctlbyname("kern.boottime", ptr.baseAddress!, ptr_2.baseAddress!, nil, 0) == 0)
              return ptr_2.baseAddress!.pointee
            }
            assert(size > 0)
            assert(size == MemoryLayout<timeval>.size)
            
            return ptr.baseAddress!.pointee
          }
          
          let timebaseInfo = withUnsafeTemporaryAllocation(of: mach_timebase_info_data_t.self, capacity: 1) { ptr in
            mach_timebase_info(ptr.baseAddress!)
            return ptr.baseAddress!.pointee
          }
          
          print(Date(timeIntervalSince1970: TimeInterval(time.tv_sec) + TimeInterval(((mach_absolute_time() * UInt64(timebaseInfo.numer)) / UInt64(timebaseInfo.denom))) / 1.0E9))
            print(Date.now)
        }
    }
}