C# event debounce

Question

I\'m listening to a hardware event message, but I need to debounce it to avoid too many queries.

This is an hardware event that sends the machine status and I have t

Answer 1

I came up with this in my class definition.

I wanted to run my action immediately if there hasn't been any action for the time period (3 seconds in the example).

If something has happened in the last three seconds, I want to send the last thing that happened within that time.

    private Task _debounceTask = Task.CompletedTask;
    private volatile Action _debounceAction;

    /// 

    /// Debounces anything passed through this 
    /// function to happen at most every three seconds
    /// 
    /// An action to run
    private async void DebounceAction(Action act)
    {
        _debounceAction = act;
        await _debounceTask;

        if (_debounceAction == act)
        {
            _debounceTask = Task.Delay(3000);
            act();
        }
    }

So, if I have subdivide my clock into every quarter of a second

  TIME:  1e&a2e&a3e&a4e&a5e&a6e&a7e&a8e&a9e&a0e&a
  EVENT:  A         B    C   D  E              F  
OBSERVED: A           B           E            F

Note that no attempt is made to cancel the task early, so it's possible for actions to pile up for 3 seconds before eventually being available for garbage collection.