In C# I have an example:
public async static Task TaskTest(int i)
{
await Task.Delay(1);
Console.WriteLine($"{i}. {DateTime.Now.ToString("HH:mm:ss fff")} " +
$"ThreadId:{Thread.CurrentThread.ManagedThreadId} Start");
int count = 1;
while (true)
{
DoSomeThing(count);
var stopWatch = new Stopwatch();
stopWatch.Start();
await Task.Delay(100);
stopWatch.Stop();
if (stopWatch.Elapsed.TotalMilliseconds > 200)
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"Id:{count} Time:{DateTime.Now.ToString("HH:mm:ss fff")} " +
$"ThreadID:{Thread.CurrentThread.ManagedThreadId} Time Delay:{stopWatch.Elapsed.TotalMilliseconds }");
Console.ForegroundColor = ConsoleColor.White;
count++;
}
}
public async static Task DoSomeThing(int index)
{
await Task.Delay(1);
Task.Delay(1000).Wait();
}
private static void Main(string[] args)
{
int i = 1;
while (i < 2)
{
TaskTest(i);
Task.Delay(1).Wait();
i++;
}
Console.ReadKey();
}
Here is my result Result
Id:8 Time:23:03:59 972 ThreadID:12 Time Delay:582.6348
Id:22 Time:23:04:01 974 ThreadID:14 Time Delay:552.7234000000001
Id:42 Time:23:04:04 967 ThreadID:8 Time Delay:907.3214
I don't know why Task sometimes delay more than 200 milliseconds.
Update: Thank for all answer. I update my code to use Thread and Thread.Sleep() and Task.Run(). I increase number of Threads run forever to 500. I tested in 30 minutes and 500 threads never sleep more than 200ms. Do you think that is bad code? Please leave a comment! Thank you so much!
public static void TaskTest(object i)
{
Console.WriteLine($"{i} Start");
int count = 1;
while (true)
{
// Open Task to do work
Task.Run(() => { DoSomeThing(count); });
var stopWatch = new Stopwatch();
stopWatch.Start();
Thread.Sleep(100);
stopWatch.Stop();
if (stopWatch.Elapsed.TotalMilliseconds > 200)
{
Console.WriteLine($"Id:{count} Time:{DateTime.Now.ToString("HH:mm:ss fff")} " +
$"ThreadID:{Thread.CurrentThread.ManagedThreadId} Time Delay:{stopWatch.Elapsed.TotalMilliseconds }");
}
count++;
}
}
public static void DoSomeThing(int index)
{
Thread.Sleep(1000); // Time spent complete work
}
private static void Main(string[] args)
{
int i = 0;
while (i < 500)
{
// Open Thread for TaskTest
Thread tesThread = new Thread(TaskTest);
tesThread.IsBackground = true;
tesThread.Start(i);
i++;
}
Console.WriteLine("Finish init");
Console.ReadKey();
}
