HashedWheelTimer
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$ dotnet add package HashedWheelTimer.NETReadme
HashedWheelTimer
Hashed Wheel Timer implementation based C#
What is it?
Hashed Wheel Timer is an approximate timer with configurable accuracy, which could be used for very efficient single-threaded execution of scheduled tasks.
This implementation assumes single-writer principle and timers firing on processing thread.
Low (or NO) garbage.
Could be used with .net framework, dotnet core.
How to get?
dotnet add package HashedWheelTimer.NET --version 0.10.4
How to use?
class IntervalTimerTask : TimerTask
{
public override Task RunAsync(ITimeout timeout)
{
Console.WriteLine($"IntervalTimerTask is fired at {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss}");
timeout.Timer.NewTimeout(this, TimeSpan.FromSeconds(5));
return Task.FromResult(0);
}
}
class OneTimeTask(string name) : TimerTask
{
public override Task RunAsync(ITimeout timeout)
{
Console.WriteLine($"{name} is fired at {DateTime.Now:yyyy-MM-dd HH:mm:ss}");
return Task.CompletedTask;
}
}
class Program
{
static void Main(string[] args)
{
Console.WriteLine($"{DateTime.Now:yyyy-MM-dd HH:mm:ss} : Started");
var timer = new HashedWheelTimer();
timer.NewTimeout(new OneTimeTask("A"), TimeSpan.FromSeconds(5));
timer.NewTimeout(new OneTimeTask("B"), TimeSpan.FromSeconds(4));
var timeout = timer.NewTimeout(new OneTimeTask("C"), TimeSpan.FromSeconds(3));
timer.NewTimeout(new OneTimeTask("D"), TimeSpan.FromSeconds(2));
timer.NewTimeout(new OneTimeTask("E"), TimeSpan.FromSeconds(1));
timer.NewTimeout(new IntervalTimerTask(), TimeSpan.FromSeconds(1));
timeout.Cancel();
Thread.Sleep(1000000000);
Console.ReadKey();
timer.Stop();
Console.WriteLine($"{DateTime.Now:yyyy-MM-dd HH:mm:ss} : Stopped");
Console.ReadKey();
}
}