Engine (computer science)
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Script error: No such module "Unsubst". An engine is a continuation-based construct that provides timed preemption. Engines which can contain other engines are sometimes called Nesters[1] and engines which do not have this ability are then called flat engines or "solo engines". To implement timed preemption there needs to be a clock. This clock can measure real time or simulated time. Simulated time can be implemented in a language like Scheme, by making each function start with decrementing the clock.[2]
(define-syntax timed-lambda
((_ formals exp1 exp2 ...)
(lambda formals (decrement-timer) exp1 exp2 ...))))
References
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Script error: No such module "Check for unknown parameters".