ln006 - Interprocess Communication Why is it so tricky to...

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Interprocess Communication Why is it so tricky to program Quagents? The body is represented by one process The controller by another process Both processes communicate with each other by passing messages The really tricky part is that these messages are asynchronous ! IPC Interprocess Communication
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Interprocess Communication Quake2 World Quagent Controller Interprocess Communication Channel (QuagentSocket) Process
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Interprocess Communication Synchronous Communication P1 P2 Messages Process executing Process waiting Asynchronous Communication P1 P2 Messages Process executing No Waiting! Hand Shaking
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Interprocess Communication Asynchronous communication is more natural in our setting Consider the alternatives: the brain stops working while body is walking the body stops walking while the brain is working neither of these alternatives is very desirable violates one of our central dogmas: be as realistic as possible
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