No-Heap Event Handlers vs. No-Heap Threads
Async event handlers can do anything a thread can do, but only bound async events have (something like) a thread object of their own.
A no-heap real-time thread can
be placed in scoped memory and follow complex rules about references,
run in immortal memory and take pains not to leak memory, or
run partly in immortal and partly in scoped memory, which is easy if kept simple.
Unlike async event handlers, threads based in immortal memory have to contort themselves to be reusable. There is no way to change the run method on a thread.
Changeable run methods are a core technology for async event handlers. Somewhere under the hood, the system is hooking async event handlers to something like a thread and then ...
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