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adjust sync pattern to avoid cross-thread set!

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Robby Findler 2013-01-01 22:11:32 -06:00
parent 0f26aafd1f
commit 0d0503bda7
1 changed files with 9 additions and 15 deletions
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22
collects/drracket/private/rep.rkt
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@ -1439,7 +1439,6 @@ TODO
(define logger-editor #f)
(define logger-messages '())
(define user-log-receiver-args-str (preferences:get 'drracket:logger-receiver-string))
(define user-log-receiver #f)
(define/public (set-user-log-receiver-args str args)
(set! user-log-receiver-args-str str)
(update-log-receiver-to-match-str))
@ -1449,19 +1448,13 @@ TODO
[logging-on?
(update-log-receiver-to-match-str)]
[else
(when user-log-receiver
(set! user-log-receiver #f)
(semaphore-post user-log-receiver-changed))]))
(channel-put user-log-receiver-changed #f)]))
(define/private (update-log-receiver-to-match-str)
(define args (parse-logger-args user-log-receiver-args-str))
(set! user-log-receiver
(channel-put user-log-receiver-changed
(and args
(apply make-log-receiver user-logger args)))
(semaphore-post user-log-receiver-changed))
(define/private (inform-user-logger-thread-that-logger-changed)
(semaphore-post user-log-receiver-changed))
(define user-log-receiver-changed (make-semaphore 0))
(apply make-log-receiver user-logger args))))
(define user-log-receiver-changed (make-channel))
(thread
(λ ()
(struct gui-event (start end name) #:prefab)
@ -1476,10 +1469,11 @@ TODO
(semaphore-post sema)
(for ([vec (in-list (reverse my-evts))])
(new-log-message vec)))
(let loop ()
(let loop ([user-log-receiver #f])
(sync
(handle-evt user-log-receiver-changed
(λ (_) (loop)))
(λ (user-log-receiver)
(loop user-log-receiver)))
(if user-log-receiver
(handle-evt user-log-receiver
(λ (vec)
@ -1490,7 +1484,7 @@ TODO
(queue-callback user-event-handler-callback #f)
(set! callback-running? #t))
(semaphore-post sema))
(loop)))
(loop user-log-receiver)))
never-evt)))))
(define/public (get-logger-messages) logger-messages)
(define/private (new-log-message vec)