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48 lines
1.1 KiB
Scheme
48 lines
1.1 KiB
Scheme
(import (scheme base)
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(scheme write)
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(srfi 1)
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(srfi 18))
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(include-c-header "full.h")
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(define lock (make-mutex))
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(define *done* #f)
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(define *dummy signal-done) ;; Hack to prevent optimizing out signal-done
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(define-c start-c-thread
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"(void *data, int argc, closure _, object k)"
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"start_c_thread(data);
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return_closcall1(data, k, boolean_t); ")
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;; TODO: this does not work right now, it crashes because we are not setup for GC!
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;; Signal (wait) that it is done, this is called from C
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(define (signal-done) ; obj)
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(let ((result 0)
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(obj #t))
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(for-each
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(lambda (n)
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(set! result (+ result n))
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)
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(iota 1000))
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(write `(Called from C result is ,result set *done* to ,obj))
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(newline)
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(mutex-lock! lock)
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(set! *done* obj)
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(mutex-unlock! lock)
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(list list result '#())))
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;; More efficient to use a condition var here to signal ready,
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;; but this is just an example
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(define (wait)
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(thread-sleep! 1)
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(mutex-lock! lock)
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(define done *done*)
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(mutex-unlock! lock)
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(if done
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#t
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(wait)))
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(start-c-thread) ;; Spawn a separate C thread since main thread runs Scheme
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(wait) ;; Wait for the signal
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