gaemstone.ECS/src/gaemstone.Utility/CallbackContextHelper.cs

using System.Collections.Generic;

namespace gaemstone.Utility;

public static class CallbackContextHelper
{
	private static readonly Dictionary<nint, object> _contexts = new();
	private static nint _counter = 0;

	public static nint Create<T>(T context) where T : notnull
	{
		lock (_contexts) {
			var id = _counter++;
			_contexts.Add(id, context);
			return id;
		}
	}

	public static T Get<T>(nint id)
	{
		lock (_contexts)
			return (T)_contexts[id];
	}

	public static void Free(nint id)
	{
		lock (_contexts)
			_contexts.Remove(id);
	}

}