Execution

Execute Runnables directly on the current thread, using a stack frame.

This is not safe to use for recursive function calls as you will ultimately encounter a stack overflow. For those situations, use trampoline.

A trampolining ExecutionContext

This ExecutionContext is run thread locally to avoid context switches. Because this is a thread local executor, if there is a dependence between the submitted Runnables and the thread becomes blocked, there will be a deadlock.