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macro-stepper: added thread/eventspace check

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Closes PR 11364 (actually, earlier commit closed)

original commit: a3367fd0b4bfade1f322b1af6e32c12a66747c6e
This commit is contained in:
Ryan Culpepper 2010-10-29 16:54:26 -06:00
parent 4d752710de
commit 35bae39515
1 changed files with 5 additions and 0 deletions
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5
collects/macro-debugger/view/view.rkt
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@ -38,7 +38,12 @@
(send/i (send/i stepper-frame stepper-frame<%> get-widget) widget<%>
add-deriv deriv))))
;; PRE: current thread = current eventspace's handler thread
(define/public (new-stepper [flags '()])
(unless (eq? (current-thread)
(eventspace-handler-thread (current-eventspace)))
(error 'macro-stepper-director
"new-stepper method called from wrong thread"))
(define stepper-frame (new-stepper-frame))
(define stepper (send/i stepper-frame stepper-frame<%> get-widget))
(send stepper-frame show #t)