SlotStateTracker (EngineBlock)

java.lang.Object
- io.engineblock.activityimpl.SlotStateTracker

```
public class SlotStateTracker
extends java.lang.Object
```
Holds the state of a slot, allows only valid transitions, and shares the slot state as

Constructor Summary

Constructors
Constructor Description

SlotStateTracker(long slotId)

Method Summary

Modifier and Type	Method	Description
`void`	`enterState(RunState to)`	Transition the thread slot to a new state.
`java.util.concurrent.atomic.AtomicReference<RunState>`	`getAtomicSlotState()`	This is how you share the current slot state most directly, but it has a caveat.
`RunState`	`getSlotState()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SlotStateTracker
```
public SlotStateTracker(long slotId)
```
- Method Detail
  - getSlotState
```
public RunState getSlotState()
```
  - getAtomicSlotState
```
public java.util.concurrent.atomic.AtomicReference<RunState> getAtomicSlotState()
```
    This is how you share the current slot state most directly, but it has a caveat. By sharing the slot state in this way, you allow external changes. You should only use this method to share slot state for observers.
    
    Returns:
    
    an atomic reference for SlotState
  - enterState
```
public void enterState(RunState to)
```
    Transition the thread slot to a new state. only accepting valid transitions.
    
    The valid slot states will be moved to a data type eventually, simplifying this method.
    
    Parameters:
    
    to - The next SlotState for this thread/slot/motor