There are a potential of having incorrect behavior , when terminating
a preempted or waiting process:

with introduction of ProcessLocalVariable, it is essential that
context unwinding procedure should be performed only
for currently active process.

Here the proposal how to ensure this:

if terminating process is not active process we should do the following:

suspendedContext := proc suspendedContext.
currentProces := Processor activeProcess.
proc suspendedContext:  [  Processor activeProcess
terminateFromContext: suspendedContext. Processor switchToProcess:
currentProcess ] asContext.
Processor switchToProcess: proc.

here #switchToProcess: is explicit switch (bypassing scheduling logic).

If we don't care about immediate termination of process and getting
back to process who initiated termination as soon as possible, then
simply do:
process terminateSoon.

which can be implemented as:

Process>>terminateSoon
| termContext |
termContext := suspendedContext.
suspendedContext := [  self terminateFromContext: termContext. self
suspend ] asContext.
Processor yield.



-- 
Best regards,
Igor Stasenko AKA sig.