Is there any callback from the SyncPoint for the NativeContainers in Jobs to dispose?

This must be a dumb question, but I cannot find out the place for NativeContainers to dispose.

If I don't understand it in a wrong way, the jobs might outlast the OnUpdate() in System (if doesn't call Complete in main-thread), but they will finish at the sync points.

The problem is [DeallocateOnJobCompletion] doesn't work for all NativeContainer, so I've to find a place to dispose those dangling container when they finally end.

I've tried to find a callback on sync-point for system to do some mem cleanup but found nothing.

So my backup plans include:

• Use persistent alloc, so only clear() before use and dispose() at end. This is simple but it might hold the memory even the system doesn't run every frame.
• Use Monobehaviour to expose an event for all systems to subscibe, which fire at the end of frame or some safe points.

Is there some obvious solution I'm missing here. I really prefer some callback from sync-points.

 

I'd say this is probably the standard approach.