47 lines
1.6 KiB
Racket
47 lines
1.6 KiB
Racket
#lang typed/racket/base
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(require racket/match)
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(require "types.rkt")
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(require "roles.rkt")
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(require "vm.rkt")
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(require "process.rkt")
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(require (rename-in "tr-struct-copy.rkt" [tr-struct-copy struct-copy])) ;; PR13149 workaround
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(provide do-delete-endpoint
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delete-all-endpoints)
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(: do-delete-endpoint : (All (State) PreEID Reason (process State) vm
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-> (values (process State) vm)))
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(define (do-delete-endpoint pre-eid reason p state)
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(cond
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[(hash-has-key? (process-endpoints p) pre-eid)
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(define old-endpoint (hash-ref (process-endpoints p) pre-eid))
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(let-values (((p state) (notify-route-change-vm (remove-endpoint p old-endpoint)
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old-endpoint
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(lambda: ([t : Role]) (absence-event t reason))
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state)))
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(values p state))]
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[else
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(values p state)]))
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(: remove-endpoint : (All (State) (process State) (endpoint State) -> (process State)))
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(define (remove-endpoint p ep)
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(define pre-eid (eid-pre-eid (endpoint-id ep)))
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(struct-copy process p [endpoints (hash-remove (process-endpoints p) pre-eid)]))
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(: delete-all-endpoints : (All (State) Reason (process State) vm
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-> (values (process State) vm (QuasiQueue (Action vm)))))
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(define (delete-all-endpoints reason p state)
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(let-values (((p state)
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(for/fold: : (values (process State) vm)
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([p p] [state state])
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([pre-eid (in-hash-keys (process-endpoints p))])
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(do-delete-endpoint pre-eid reason p state))))
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(values p
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state
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(list->quasiqueue
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(map (lambda (#{pre-eid : PreEID})
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(delete-endpoint (cast (eid (process-pid p) pre-eid) PreEID)
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reason))
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(hash-keys (process-meta-endpoints p)))))))
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