ActorScript(TM) extension of C sharp (TM), Java(TM), and Objective
C(TM): iAdaptive(TM) concurrency for antiCloud(TM) privacy and security
release_lt5ohmcidrelzcqcunby7bucqu
by
Carl Hewitt
2012
Abstract
ActorScript(TM) is a general purpose programming language for implementing
discretionary, adaptive concurrency that manages resources and demand.
It is differentiated from previous languages by the following:
- Universality
*** Ability to specify what Actors can do
*** Specify interface between hardware and software
*** Everything in the language is accomplished using message passing
including the very definition of ActorScript itself
*** Functional, Imperative, Logic, and Concurrent programming are integrated.
*** Concurrency dynamically adapts to resources available and current load.
*** Programs do not expose low-level implementation mechanisms such as
threads, tasks, locks, cores, etc.
*** Messages can be directly communicated without requiring indirection
through brokers, channels, class hierarchies, mailboxes, pipes, ports, queues
etc.
*** Variable races are eliminated.
*** Binary XML and JSON are data types.
*** Application binary interfaces are afforded so that no identifier symbol
need be looked up at runtime.
- Safety and Security
*** Programs are extension invariant, i.e., extending a program does not
change its meaning.
*** Applications cannot directly harm each other.
- Performance
*** Impose no overhead on implementation of Actor systems
*** Message passing has essentially same overhead as procedure calling and
looping.
*** Allow execution to be dynamically adjusted for system load and capacity
(e.g. cores)
*** Locality because execution is not bound by a sequential global memory
model
*** Inherent concurrency because execution is not bound by communicating
sequential processes
*** Minimize latency along critical paths
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