[widdershins]

I'm confused. To me it seems that real time guarantees are a function of three things:

- Is it constant time in algorithmic complexity?

- Is it single threaded (i.e. free from locks)?

- Does it need to fetch memory from the system (not realtime safe)?

There are slab allocators that can satisfy all of these, and are therefore realtime safe.

So I'm still wondering what the difference is.