Time since current Update has started

Questions & Answers
1

I want to split heavy job in Update(). Currently I am using StopWatch for this.

The problem is several relatively independent GameObjects that needs to have Update() limited, therefore I am looking for something like Time.realtimeSinceUpdateStarts.

I don’t know which of GameObject will run its Update first to measure this time myself. I don’t want to run all GameObject Updates via some manager and while priority queue might be cool at some point, for the moment I am looking for a very simple method to discard all updates if either of them takes too long.

Ideas?

I understand the Unity runs Update method for each active object, which is the first object, perhaps I just hook my StopWatch to it?

3

LetsTestThisUpdateTrackerThing.cs:

using UnityEngine;
public class LetsTestThisUpdateTrackerThing : MonoBehaviour
{
    [SerializeField] int _workload = 10000;
    [SerializeField][Range(0,60)] int _msBudget = 30;
    void Update ()
    {
        for( int i=0 ; i<_workload ; i++ )
            if( UpdateTracker.watch.ElapsedMilliseconds<_msBudget )
                Work();
    }
    void Work ()
    {
        for( int i=0 ; i<1000 ; i++ )
        {
            float f = Mathf.Sqrt( Random.Range(1,float.MaxValue) );
        }
    }
}

UpdateTracker.cs:

using UnityEngine;
[DefaultExecutionOrder(-1000)]
public class UpdateTracker : MonoBehaviour
{
    [RuntimeInitializeOnLoadMethod( RuntimeInitializeLoadType.BeforeSceneLoad )]
    static void _InitializeType () => DontDestroyOnLoad( new GameObject(nameof(UpdateTracker)).AddComponent<UpdateTracker>().gameObject );
    public static System.Diagnostics.Stopwatch watch = new System.Diagnostics.Stopwatch();
    void Update () => watch.Restart();
}
2

What is wrong with Time.deltaTime?

It measures the time past in a frame and is heavily used everywhere in Unity