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https://github.com/ashinn/chibi-scheme.git
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8b5eb68238
They can be close()d explicitly with close-file-descriptor, and will close() on gc, but only explicitly closing the last port on them will close the fileno. Notably needed for network sockets where we open separate input and output ports on the same socket.
114 lines
3.1 KiB
Scheme
114 lines
3.1 KiB
Scheme
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(cond-expand
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(modules (import (srfi 18) (srfi 39) (chibi test)))
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(else #f))
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(test-begin "threads")
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(test "no threads" 'ok (begin 'ok))
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(test "unstarted thread" 'ok
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(let ((t (make-thread (lambda () (error "oops"))))) 'ok))
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(test "ignored thread terminates" 'ok
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(let ((t (make-thread (lambda () 'oops)))) (thread-start! t) 'ok))
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(test "ignored thread hangs" 'ok
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(let ((t (make-thread (lambda () (let lp () (lp))))))
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(thread-start! t)
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'ok))
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(test "joined thread terminates" 'ok
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(let ((t (make-thread (lambda () 'oops))))
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(thread-start! t)
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(thread-join! t)
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'ok))
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(test "joined thread hangs, timeout" 'timeout
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(let ((t (make-thread (lambda () (let lp () (lp))))))
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(thread-start! t)
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(thread-join! t 0.1 'timeout)))
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(test "basic mutex" 'ok
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(let ((m (make-mutex)))
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(and (mutex? m) 'ok)))
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(test "mutex unlock" 'ok
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(let ((m (make-mutex)))
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(and (mutex-unlock! m) 'ok)))
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(test "mutex lock/unlock" 'ok
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(let ((m (make-mutex)))
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(and (mutex-lock! m)
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(mutex-unlock! m)
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'ok)))
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(test "mutex lock/lock" 'timeout
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(let ((m (make-mutex)))
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(and (mutex-lock! m)
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(if (mutex-lock! m 0.1) 'fail 'timeout))))
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(test "mutex lock timeout" 'timeout
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(let* ((m (make-mutex))
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(t (make-thread (lambda () (mutex-lock! m)))))
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(thread-start! t)
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(thread-yield!)
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(if (mutex-lock! m 0.1) 'fail 'timeout)))
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(test "mutex lock/unlock/lock/lock" 'timeout
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(let* ((m (make-mutex))
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(t (make-thread (lambda () (mutex-unlock! m)))))
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(mutex-lock! m)
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(thread-start! t)
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(if (mutex-lock! m 0.1)
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(if (mutex-lock! m 0.1) 'fail-second 'timeout)
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'bad-timeout)))
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(test "thread-join! end result" 5
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(let* ((th (make-thread (lambda () (+ 3 2)))))
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(thread-start! th)
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(thread-join! th)))
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(test-error "thread-join! exception"
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(let* ((th (make-thread
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(lambda ()
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(parameterize ((current-error-port (open-output-string)))
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(+ 3 "2"))))))
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(thread-start! th)
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(thread-join! th)))
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(test-assert "make-condition-variable"
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(condition-variable? (make-condition-variable)))
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(test "condition-variable signal" 'ok
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(let* ((mutex (make-mutex))
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(cndvar (make-condition-variable))
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(th (make-thread
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(lambda ()
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(if (mutex-unlock! mutex cndvar 0.1) 'ok 'timeout1)))))
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(thread-start! th)
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(thread-yield!)
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(condition-variable-signal! cndvar)
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(thread-join! th 0.1 'timeout2)))
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(test "condition-variable broadcast" '(ok1 ok2)
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(let* ((mutex (make-mutex))
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(cndvar (make-condition-variable))
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(th1 (make-thread
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(lambda ()
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(mutex-lock! mutex)
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(if (mutex-unlock! mutex cndvar 1.0) 'ok1 'timeout1))))
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(th2 (make-thread
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(lambda ()
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(mutex-lock! mutex)
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(if (mutex-unlock! mutex cndvar 1.0) 'ok2 'timeout2)))))
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(thread-start! th1)
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(thread-start! th2)
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(thread-yield!)
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(mutex-lock! mutex)
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(condition-variable-broadcast! cndvar)
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(mutex-unlock! mutex)
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(list (thread-join! th1 0.1 'timeout3)
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(thread-join! th2 0.1 'timeout4))))
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(test-end)
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