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Fix deref of delays

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This commit is contained in:
Justin Ethier 2019-07-11 18:11:08 -04:00
parent 0b1c4662fb
commit c2757d2fe6
1 changed files with 5 additions and 6 deletions
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11
libs/cyclone/concurrent.sld
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@ -27,8 +27,10 @@
;; Delays
make-shared-delay
shared-delay
shared-delay?
;; Promises
make-shared-promise
shared-promise?
deliver
;; Futures
future?
@ -213,15 +215,12 @@
(when (not (shared-delay? d))
(error "Expected future but received" d))
(mutex-lock! (sd:lock d))
(cond
((sd:done d)
(sd:value d))
(else
(when (not (sd:done d))
(sd:set-value! d
(make-shared ((sd:value d)))) ;; Exec thunk and store result
(sd:set-done! d #t)))
(sd:set-done! d #t))
(mutex-unlock! (sd:lock d))
)
(sd:value d))
(define (shared-delay-realized? obj)
(let ((rv #f))