Jörg F. Wittenberger wrote:
are dynamic-wind pre/post-thunks by chicken executed upon each
thread switch?
Why would they?
In fact they don't:
------------------------------------------------------------
(use srfi-18)
(thread-start!
(make-thread
(lambda ()
(dynamic-wind
(lambda ()
(print "Entering thread 1"))
(lambda ()
(print "In thread 1")
(thread-yield!)
(print "In thread 1"))
(lambda ()
(print "Exiting thread 1"))))))
(dynamic-wind
(lambda ()
(print "Entering thread 0"))
(lambda ()
(print "In thread 0")
(thread-yield!)
(print "In thread 0"))
(lambda ()
(print "Exiting thread 0")))
(thread-sleep! 1)
------------------------------------------------------------
Entering thread 0
In thread 0
Entering thread 1
In thread 1
In thread 0
Exiting thread 0
In thread 1
Exiting thread 1
Tobia
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