WIP toward ground-vm
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dac24674ad
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os2.rkt
64
os2.rkt
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@ -280,3 +280,67 @@
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[(? send-message?) preaction]
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[(spawn thunk k)
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(spawn thunk (wrap-trapk pid k))]))
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;;---------------------------------------------------------------------------
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(define (ground-vm boot)
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(let run-kernel ((transition (run-vm (make-vm boot)))
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(endpoints (hash))
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(next-eid-number 0))
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(let integrate-delta ((state (transition-state transition))
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(actions (transition-actions transition))
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(endpoints endpoints)
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(next-eid-number 0))
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(match actions
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['()
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(define interruptk (apply sync
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(for/list ([(eid e) (in-hash events)])
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(wrap-evt (endpoint-topic e)
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(lambda (message)
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(run-user-code
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((handlers-message (endpoint-handlers e))
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eid
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(endpoint-topic e)
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message)))))))
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(run-kernel (run-user-code (interruptk state)))]
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[(cons preaction rest)
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(match preaction
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[(add-role topic hs k)
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(integrate-delta (run-user-code
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((run-user-code (k next-eid-number))
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state))
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rest
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(hash-set endpoints
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next-eid-number
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(endpoint next-eid-number
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[(delete-role eid reason) ...]
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[(send-message topic body) ...]
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[(spawn thunk k) ...])]))))
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(for-each (lambda (thunk) (thunk)) (kernel-mode-transition-messages transition))
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(when (not (nested-vm-inert? (kernel-mode-transition-suspension transition)))
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(match transition
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[(kernel-mode-transition (suspension new-state
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polling-k
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message-handlers
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'())
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_
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'()
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'())
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(define inbound-messages
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(map (match-lambda [(message-handler (ground-event-pattern tag evt) k)
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(wrap-evt evt (lambda (v) (cons (ground-event-value tag v) k)))])
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message-handlers))
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(match-define (cons inbound-value inbound-continuation)
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(apply sync
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(wrap-evt (if polling-k always-evt never-evt)
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(lambda (v) (cons (ground-event-value 'idle (void))
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(lambda (dummy) polling-k))))
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inbound-messages))
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(loop ((inbound-continuation inbound-value) new-state))]
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[_
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(error 'ground-vm
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"Outermost VM may not spawn new siblings or send or receive metamessages")])))
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