Two questions:
1) What can I do with a thread descriptor?
2) Is there a way to get the thread descriptor from inside the thread?
There's no documentation that I can find on what a thread descriptor
actually is or what can be done with it. It's an opaque structure...I
guess I can use it for eq? and equal? comparisons, but I'm not sure what
use that is.
One thing I would like to be able to do with threads is give them a label
for logging purposes. I've been making that work by creating a label when
I create the thread and then parameterizing it into my 'say' macro (which I
use in place of 'print' and etc):
(define prefix-for-say (make-parameter ""))
(define-syntax (say stx)
(syntax-case stx ()
[(say a ...)
#'(displayln (~a (prefix-for-say) a ...))]
))
(parameterize ((prefix-for-say (label-maker)))
(thread (thunk (say "about to do stuff") (do-stuff) (say "did stuff"))))
This would print:
"some-label: about to do stuff"
"some-label: did stuff"
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