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Use `continuation-prompt-available?` to support `actor` at prospect "toplevel".

This commit is contained in:
Tony Garnock-Jones 2016-02-05 18:03:40 -05:00
parent 92169d5e10
commit d5c4b30335
12 changed files with 163 additions and 159 deletions
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12
prospect/actor.rkt
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@ -24,6 +24,7 @@
pretty-print-actor-state
(for-syntax analyze-pattern)
syndicate-actor-prompt-tag-installed?
)
(require (for-syntax racket/base))
@ -157,6 +158,9 @@
(define prompt (make-continuation-prompt-tag 'syndicate-hll))
(define (syndicate-actor-prompt-tag-installed?)
(continuation-prompt-available? prompt))
;; (Any ... -> Nothing) -> (Any ... -> Instruction)
(define (reply-to k)
(lambda reply-values
@ -171,6 +175,9 @@
;; ((Any ... -> Instruction) -> Instruction)
(define (call-in-raw-context proc)
(when (not (syndicate-actor-prompt-tag-installed?))
(error 'call-in-raw-context
"Attempt to invoke imperative Syndicate actor action outside actor context."))
(call-with-composable-continuation
(lambda (k) (abort-current-continuation prompt (lambda () (proc (reply-to k)))))
prompt))
@ -653,7 +660,10 @@
;; (local-require racket/pretty)
;; (pretty-print (syntax->datum action-fn-stx))
#`(spawn! '#,linkage-kind #,action-fn-stx))
#`(let ((do-spawn (lambda () (spawn! '#,linkage-kind #,action-fn-stx))))
(if (syndicate-actor-prompt-tag-installed?)
(do-spawn)
(actor-body->spawn-action do-spawn))))
)
;; ;; Given a Pred, computes (and perhaps allocates):

21
prospect/examples/actor/bank-account.rkt
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@ -6,17 +6,14 @@
(struct account (balance) #:prefab)
(struct deposit (amount) #:prefab)
(actor-body->spawn-action
(lambda ()
(actor (forever #:collect [(balance 0)]
(assert (account balance))
(on (message (deposit $amount))
(+ balance amount))))
(actor (forever #:collect [(balance 0)]
(assert (account balance))
(on (message (deposit $amount))
(+ balance amount))))
(actor (forever (on (asserted (account $balance))
(printf "Balance changed to ~a\n" balance))))
(actor (forever (on (asserted (account $balance))
(printf "Balance changed to ~a\n" balance))))
(until (asserted (observe (deposit _))))
(send! (deposit +100))
(send! (deposit -30))
))
(actor (until (asserted (observe (deposit _))))
(send! (deposit +100))
(send! (deposit -30)))

19
prospect/examples/actor/box-and-client.rkt
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@ -6,15 +6,12 @@
(struct set-box (new-value) #:transparent)
(struct box-state (value) #:transparent)
(actor-body->spawn-action
(lambda ()
(actor (forever #:collect [(current-value 0)]
(assert (box-state current-value))
(on (message (set-box $new-value))
(log-info "box: taking on new-value ~v" new-value)
new-value)))
(actor (forever #:collect [(current-value 0)]
(assert (box-state current-value))
(on (message (set-box $new-value))
(log-info "box: taking on new-value ~v" new-value)
new-value)))
(actor (forever (on (asserted (box-state $v))
(log-info "client: learned that box's value is now ~v" v)
(send! (set-box (+ v 1))))))
))
(actor (forever (on (asserted (box-state $v))
(log-info "client: learned that box's value is now ~v" v)
(send! (set-box (+ v 1))))))

20
prospect/examples/actor/chain.rkt Normal file
View File

@ -0,0 +1,20 @@
#lang prospect
(require prospect/actor)
(require prospect/drivers/timer)
(spawn-timer-driver)
(define (sleep sec)
(define timer-id (gensym 'sleep))
(until (message (timer-expired timer-id _))
#:init [(send! (set-timer timer-id (* sec 1000.0) 'relative))]))
(define (chain-step n)
(printf "chain-step ~v\n" n)
(actor (sleep 1)
(if (< n 5)
(chain-step (+ n 1))
(printf "done.\n"))))
(chain-step 0)

23
prospect/examples/actor/chat-client.rkt
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@ -8,16 +8,15 @@
(define remote-handle (tcp-address "localhost" 5999))
(define stdin-evt (read-bytes-line-evt (current-input-port) 'any))
(actor-body->spawn-action
(lambda ()
(perform-core-action! (spawn-tcp-driver))
(forever (on (message (external-event stdin-evt (list $line)) #:meta-level 1)
(if (eof-object? line)
(return!)
(send! (tcp-channel local-handle remote-handle line))))
(spawn-tcp-driver)
(assert (advertise (tcp-channel local-handle remote-handle _)))
(on (retracted (advertise (tcp-channel remote-handle local-handle _))) (return!))
(on (message (tcp-channel remote-handle local-handle $bs))
(write-bytes bs)
(flush-output)))))
(forever (on (message (external-event stdin-evt (list $line)) #:meta-level 1)
(if (eof-object? line)
(return!)
(send! (tcp-channel local-handle remote-handle line))))
(assert (advertise (tcp-channel local-handle remote-handle _)))
(on (retracted (advertise (tcp-channel remote-handle local-handle _))) (return!))
(on (message (tcp-channel remote-handle local-handle $bs))
(write-bytes bs)
(flush-output)))

12
prospect/examples/actor/chat-no-quit-world-no-nesting.rkt
View File

@ -29,10 +29,8 @@
(on (message (tcp-channel them us $bs))
(send! (says user (string-trim (bytes->string/utf-8 bs))))))))
(actor-body->spawn-action
(lambda ()
(perform-core-action! (spawn-tcp-driver))
(define us (tcp-listener 5999))
(forever (assert (advertise (observe (tcp-channel _ us _))))
(on (asserted (advertise (tcp-channel $them us _)))
(spawn-session them us)))))
(spawn-tcp-driver)
(define us (tcp-listener 5999))
(forever (assert (advertise (observe (tcp-channel _ us _))))
(on (asserted (advertise (tcp-channel $them us _)))
(spawn-session them us)))

12
prospect/examples/actor/chat-no-quit-world.rkt
View File

@ -30,10 +30,8 @@
(on (message (tcp-channel them us $bs) #:meta-level 1)
(send! (says user (string-trim (bytes->string/utf-8 bs))))))))
(actor-body->spawn-action
(lambda ()
(perform-core-action! (spawn-tcp-driver))
(network (define us (tcp-listener 5999))
(forever (assert (advertise (observe (tcp-channel _ us _))) #:meta-level 1)
(on (asserted (advertise (tcp-channel $them us _)) #:meta-level 1)
(spawn-session them us))))))
(spawn-tcp-driver)
(network (define us (tcp-listener 5999))
(forever (assert (advertise (observe (tcp-channel _ us _))) #:meta-level 1)
(on (asserted (advertise (tcp-channel $them us _)) #:meta-level 1)
(spawn-session them us))))

31
prospect/examples/actor/chat-simplified-internals.rkt
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@ -34,22 +34,19 @@
(on (message (tcp-incoming-data id $bs))
(send! (says user (string-trim (bytes->string/utf-8 bs))))))))
(actor-body->spawn-action
(lambda ()
(perform-core-action! (spawn-tcp-driver))
(spawn-tcp-driver)
(define us (tcp-listener 5999))
(actor (forever (assert (advertise (observe (tcp-channel _ us _))))
(on (asserted (advertise (tcp-channel $them us _)))
(define id (seal (list them us)))
(actor (state [(assert (tcp-remote-open id))
(on (message (tcp-channel them us $bs))
(send! (tcp-incoming-data id bs)))
(on (message (tcp-outgoing-data id $bs))
(send! (tcp-channel us them bs)))]
[(retracted (advertise (tcp-channel them us _))) (void)]
[(retracted (tcp-local-open id)) (void)])))))
(define us (tcp-listener 5999))
(actor (forever (assert (advertise (observe (tcp-channel _ us _))))
(on (asserted (advertise (tcp-channel $them us _)))
(define id (seal (list them us)))
(actor (state [(assert (tcp-remote-open id))
(on (message (tcp-channel them us $bs))
(send! (tcp-incoming-data id bs)))
(on (message (tcp-outgoing-data id $bs))
(send! (tcp-channel us them bs)))]
[(retracted (advertise (tcp-channel them us _))) (void)]
[(retracted (tcp-local-open id)) (void)])))))
(forever (on (asserted (tcp-remote-open $id))
(spawn-session id)))
))
(forever (on (asserted (tcp-remote-open $id))
(spawn-session id)))

14
prospect/examples/actor/chat.rkt
View File

@ -34,11 +34,9 @@
(send! (shutdown))
(send! (says user input-string)))))))
(actor-body->spawn-action
(lambda ()
(perform-core-action! (spawn-tcp-driver))
(network (define us (tcp-listener 5999))
(until (message (shutdown))
(assert (advertise (observe (tcp-channel _ us _))) #:meta-level 1)
(on (asserted (advertise (tcp-channel $them us _)) #:meta-level 1)
(spawn-session them us))))))
(spawn-tcp-driver)
(network (define us (tcp-listener 5999))
(until (message (shutdown))
(assert (advertise (observe (tcp-channel _ us _))) #:meta-level 1)
(on (asserted (advertise (tcp-channel $them us _)) #:meta-level 1)
(spawn-session them us))))

22
prospect/examples/actor/echo.rkt
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@ -3,16 +3,14 @@
(require prospect/actor)
(require prospect/drivers/tcp)
(actor-body->spawn-action
(lambda ()
(perform-core-action! (spawn-tcp-driver))
(spawn-tcp-driver)
(define server-id (tcp-listener 5999))
(forever (assert (advertise (observe (tcp-channel _ server-id _))))
(on (asserted (advertise (tcp-channel $c server-id _)))
(printf "Accepted connection from ~v\n" c)
(actor (until (retracted (advertise (tcp-channel c server-id _)))
(assert (advertise (tcp-channel server-id c _)))
(on (message (tcp-channel c server-id $bs))
(send! (tcp-channel server-id c bs))))
(printf "Closed connection ~v\n" c))))))
(define server-id (tcp-listener 5999))
(forever (assert (advertise (observe (tcp-channel _ server-id _))))
(on (asserted (advertise (tcp-channel $c server-id _)))
(printf "Accepted connection from ~v\n" c)
(actor (until (retracted (advertise (tcp-channel c server-id _)))
(assert (advertise (tcp-channel server-id c _)))
(on (message (tcp-channel c server-id $bs))
(send! (tcp-channel server-id c bs))))
(printf "Closed connection ~v\n" c))))

111
prospect/examples/actor/file-system.rkt
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@ -10,64 +10,59 @@
(struct save (file) #:prefab)
(struct delete (name) #:prefab)
(actor-body->spawn-action
(lambda ()
(spawn-timer-driver)
(perform-core-action! (spawn-timer-driver))
(actor (forever #:collect [(files (hash))]
(on (asserted (observe (file $name _)))
(printf "At least one reader exists for ~v\n" name)
(begin0 (until (retracted (observe (file name _)))
#:collect [(content (hash-ref files name #f))]
(assert (file name content))
(on (message (save (file name $content))) content)
(on (message (delete name)) #f))
(printf "No remaining readers exist for ~v\n" name)))
(on (message (save (file $name $content))) (hash-set files name content))
(on (message (delete $name)) (hash-remove files name))))
(actor (forever #:collect [(files (hash))]
(on (asserted (observe (file $name _)))
(printf "At least one reader exists for ~v\n" name)
(begin0 (until (retracted (observe (file name _)))
#:collect [(content (hash-ref files name #f))]
(assert (file name content))
(on (message (save (file name $content))) content)
(on (message (delete name)) #f))
(printf "No remaining readers exist for ~v\n" name)))
(on (message (save (file $name $content))) (hash-set files name content))
(on (message (delete $name)) (hash-remove files name))))
(define (sleep sec)
(define timer-id (gensym 'sleep))
(until (message (timer-expired timer-id _))
#:init [(send! (set-timer timer-id (* sec 1000.0) 'relative))]))
(define (sleep sec)
(define timer-id (gensym 'sleep))
(until (message (timer-expired timer-id _))
#:init [(send! (set-timer timer-id (* sec 1000.0) 'relative))]))
;; Shell
(let ((e (read-bytes-line-evt (current-input-port) 'any)))
(define (print-prompt)
(printf "> ")
(flush-output))
(define reader-count 0)
(define (generate-reader-id)
(begin0 reader-count
(set! reader-count (+ reader-count 1))))
(actor (print-prompt)
(until (message (external-event e (list (? eof-object? _))) #:meta-level 1)
(on (message (external-event e (list (? bytes? $bs))) #:meta-level 1)
(match (string-split (string-trim (bytes->string/utf-8 bs)))
[(list "open" name)
(define reader-id (generate-reader-id))
(actor (printf "Reader ~a opening file ~v.\n" reader-id name)
(until (message `(stop-watching ,name))
(on (asserted (file name $contents))
(printf "Reader ~a sees that ~v contains: ~v\n"
reader-id
name
contents)))
(printf "Reader ~a closing file ~v.\n" reader-id name))]
[(list "close" name)
(send! `(stop-watching ,name))]
[(list* "write" name words)
(send! (save (file name words)))]
[(list "delete" name)
(send! (delete name))]
[_
(printf "I'm afraid I didn't understand that.\n")
(printf "Try: open filename\n")
(printf " close filename\n")
(printf " write filename some text goes here\n")
(printf " delete filename\n")])
(sleep 0.1)
(print-prompt)))))
))
;; Shell
(let ((e (read-bytes-line-evt (current-input-port) 'any)))
(define (print-prompt)
(printf "> ")
(flush-output))
(define reader-count 0)
(define (generate-reader-id)
(begin0 reader-count
(set! reader-count (+ reader-count 1))))
(actor (print-prompt)
(until (message (external-event e (list (? eof-object? _))) #:meta-level 1)
(on (message (external-event e (list (? bytes? $bs))) #:meta-level 1)
(match (string-split (string-trim (bytes->string/utf-8 bs)))
[(list "open" name)
(define reader-id (generate-reader-id))
(actor (printf "Reader ~a opening file ~v.\n" reader-id name)
(until (message `(stop-watching ,name))
(on (asserted (file name $contents))
(printf "Reader ~a sees that ~v contains: ~v\n"
reader-id
name
contents)))
(printf "Reader ~a closing file ~v.\n" reader-id name))]
[(list "close" name)
(send! `(stop-watching ,name))]
[(list* "write" name words)
(send! (save (file name words)))]
[(list "delete" name)
(send! (delete name))]
[_
(printf "I'm afraid I didn't understand that.\n")
(printf "Try: open filename\n")
(printf " close filename\n")
(printf " write filename some text goes here\n")
(printf " delete filename\n")])
(sleep 0.1)
(print-prompt)))))

25
prospect/examples/actor/mini-echo.rkt
View File

@ -5,19 +5,16 @@
(struct echo-req (body) #:prefab)
(struct echo-resp (body) #:prefab)
(actor-body->spawn-action
(lambda ()
(actor (forever #:collect [(count 0)]
(on (message (echo-req $body))
(send! (echo-resp body))
(+ count 1))))
(actor (forever #:collect [(count 0)]
(on (message (echo-req $body))
(send! (echo-resp body))
(+ count 1))))
(actor (forever (on (message (echo-resp $body))
(printf "Received: ~v\n" body))))
(actor (forever (on (message (echo-resp $body))
(printf "Received: ~v\n" body))))
(until (asserted (observe (echo-req _))))
(until (asserted (observe (echo-resp _))))
(send! (echo-req 0))
(send! (echo-req 1))
(send! (echo-req 2))
))
(actor (until (asserted (observe (echo-req _))))
(until (asserted (observe (echo-resp _))))
(send! (echo-req 0))
(send! (echo-req 1))
(send! (echo-req 2)))