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;;;; srfi-18.test --- Test suite for Guile's SRFI-18 functions. -*- scheme -*-
;;;; Julian Graham, 2007-10-26
;;;;
;;;; Copyright (C) 2007, 2008, 2012, 2018 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
(define-module (test-suite test-srfi-18)
#:use-module ((ice-9 threads) #:prefix threads:)
#:use-module (test-suite lib))
;; two expressions so that the srfi-18 import is in effect for expansion
;; of the rest
(if (provided? 'threads)
(use-modules (srfi srfi-18)))
(cond
((provided? 'threads)
(with-test-prefix "current-thread"
(pass-if "current-thread eq current-thread"
(eq? (current-thread) (current-thread))))
(with-test-prefix "thread?"
(pass-if "current-thread is thread"
(thread? (current-thread)))
(pass-if "foo not thread"
(not (thread? 'foo))))
(with-test-prefix "make-thread"
(pass-if "make-thread creates new thread"
(let* ((n (length (threads:all-threads)))
(t (make-thread (lambda () 'foo) 'make-thread-1))
(r (> (length (threads:all-threads)) n)))
(thread-terminate! t) r)))
(with-test-prefix "thread-name"
(pass-if "make-thread with name binds name"
(let* ((t (make-thread (lambda () 'foo) 'thread-name-1))
(r (eq? (thread-name t) 'thread-name-1)))
(thread-terminate! t) r))
(pass-if "make-thread without name does not bind name"
(let* ((t (make-thread (lambda () 'foo)))
(r (not (thread-name t))))
(thread-terminate! t) r)))
(with-test-prefix "thread-specific"
(pass-if "thread-specific is initially #f"
(let* ((t (make-thread (lambda () 'foo) 'thread-specific-1))
(r (not (thread-specific t))))
(thread-terminate! t) r))
(pass-if "thread-specific-set! can set value"
(let ((t (make-thread (lambda () 'foo) 'thread-specific-2)))
(thread-specific-set! t "hello")
(let ((r (equal? (thread-specific t) "hello")))
(thread-terminate! t) r))))
(with-test-prefix "thread-start!"
(pass-if "thread activates only after start"
(let* ((started #f)
(m (make-mutex 'thread-start-mutex))
(t (make-thread (lambda () (set! started #t)) 'thread-start-1)))
(and (not started) (thread-start! t) (thread-join! t) started))))
(with-test-prefix "thread-yield!"
(pass-if "thread yield suceeds"
(thread-yield!) #t))
(with-test-prefix "thread-sleep!"
(pass-if "thread sleep with time"
(let ((future-time (seconds->time (+ (time->seconds (current-time)) 2))))
(unspecified? (thread-sleep! future-time))))
(pass-if "thread sleep with number"
(unspecified? (thread-sleep! 0)))
(pass-if "thread sleeps fractions of a second"
(let* ((current (time->seconds (current-time)))
(future (+ current 0.5)))
(thread-sleep! 0.5)
(>= (time->seconds (current-time)) future)))
(pass-if "thread does not sleep on past time"
(let ((past-time (seconds->time (- (time->seconds (current-time)) 2))))
(unspecified? (thread-sleep! past-time)))))
(with-test-prefix "thread-terminate!"
(pass-if "termination destroys non-started thread"
(let ((t (make-thread (lambda () 'nothing) 'thread-terminate-1))
(num-threads (length (threads:all-threads)))
(success #f))
(thread-terminate! t)
(with-exception-handler
(lambda (obj) (set! success (terminated-thread-exception? obj)))
(lambda () (thread-join! t)))
success))
(pass-if "termination destroys started thread"
(let* ((m1 (make-mutex 'thread-terminate-2a))
(m2 (make-mutex 'thread-terminate-2b))
(c (make-condition-variable 'thread-terminate-2))
(t (make-thread (lambda ()
(mutex-lock! m1)
(condition-variable-signal! c)
(mutex-unlock! m1)
(mutex-lock! m2))
'thread-terminate-2))
(success #f))
(mutex-lock! m1)
(mutex-lock! m2)
(thread-start! t)
(mutex-unlock! m1 c)
(thread-terminate! t)
(with-exception-handler
(lambda (obj) (set! success (terminated-thread-exception? obj)))
(lambda () (thread-join! t)))
success)))
(with-test-prefix "thread-join!"
(pass-if "join receives result of thread"
(let ((t (make-thread (lambda () 'foo) 'thread-join-1)))
(thread-start! t)
(eq? (thread-join! t) 'foo)))
(pass-if "join receives timeout val if timeout expires"
(let* ((m (make-mutex 'thread-join-2))
(t (make-thread (lambda () (mutex-lock! m)) 'thread-join-2)))
(mutex-lock! m)
(thread-start! t)
(let ((r (thread-join! t (current-time) 'bar)))
(thread-terminate! t)
(eq? r 'bar))))
(pass-if "join throws exception on timeout without timeout val"
(let* ((m (make-mutex 'thread-join-3))
(t (make-thread (lambda () (mutex-lock! m)) 'thread-join-3))
(success #f))
(mutex-lock! m)
(thread-start! t)
(with-exception-handler
(lambda (obj) (set! success (join-timeout-exception? obj)))
(lambda () (thread-join! t (current-time))))
(thread-terminate! t)
success))
(pass-if "join waits on timeout"
(let ((t (make-thread (lambda () (sleep 1) 'foo) 'thread-join-4)))
(thread-start! t)
(eq? (thread-join! t (+ (time->seconds (current-time)) 2)) 'foo))))
(with-test-prefix "mutex?"
(pass-if "make-mutex creates mutex"
(mutex? (make-mutex)))
(pass-if "symbol not mutex"
(not (mutex? 'foo))))
(with-test-prefix "mutex-name"
(pass-if "make-mutex with name binds name"
(let* ((m (make-mutex 'mutex-name-1)))
(eq? (mutex-name m) 'mutex-name-1)))
(pass-if "make-mutex without name does not bind name"
(let* ((m (make-mutex)))
(not (mutex-name m)))))
(with-test-prefix "mutex-specific"
(pass-if "mutex-specific is initially #f"
(let ((m (make-mutex 'mutex-specific-1)))
(not (mutex-specific m))))
(pass-if "mutex-specific-set! can set value"
(let ((m (make-mutex 'mutex-specific-2)))
(mutex-specific-set! m "hello")
(equal? (mutex-specific m) "hello"))))
(with-test-prefix "mutex-state"
(pass-if "mutex state is initially not-abandoned"
(let ((m (make-mutex 'mutex-state-1)))
(eq? (mutex-state m) 'not-abandoned)))
(pass-if "mutex state of locked, owned mutex is owner thread"
(let ((m (make-mutex 'mutex-state-2)))
(mutex-lock! m)
(eq? (mutex-state m) (current-thread))))
(pass-if "mutex state of locked, unowned mutex is not-owned"
(let ((m (make-mutex 'mutex-state-3)))
(mutex-lock! m #f #f)
(eq? (mutex-state m) 'not-owned)))
(pass-if "mutex state of unlocked, abandoned mutex is abandoned"
(let* ((m (make-mutex 'mutex-state-4))
(t (make-thread (lambda () (mutex-lock! m)))))
(thread-start! t)
(thread-join! t)
(eq? (mutex-state m) 'abandoned))))
(with-test-prefix "mutex-lock!"
(pass-if "mutex-lock! returns true on successful lock"
(let* ((m (make-mutex 'mutex-lock-1)))
(mutex-lock! m)))
(pass-if "mutex-lock! returns false on timeout"
(let* ((m (make-mutex 'mutex-lock-2))
(t (make-thread (lambda () (mutex-lock! m 0 #f)))))
(mutex-lock! m)
(thread-start! t)
(not (thread-join! t))))
(pass-if "mutex-lock! returns true when lock obtained within timeout"
(let* ((m (make-mutex 'mutex-lock-3))
(t (make-thread (lambda ()
(mutex-lock! m 100 #f)))))
(mutex-lock! m)
(thread-start! t)
(mutex-unlock! m)
(thread-join! t)))
(pass-if "can lock mutex for non-current thread"
(let* ((m1 (make-mutex 'mutex-lock-4a))
(m2 (make-mutex 'mutex-lock-4b))
(t (make-thread (lambda () (mutex-lock! m1)) 'mutex-lock-4)))
(mutex-lock! m1)
(thread-start! t)
(mutex-lock! m2 #f t)
(let ((success (eq? (mutex-state m2) t)))
(thread-terminate! t) success)))
(pass-if "locking abandoned mutex throws exception"
(let* ((m (make-mutex 'mutex-lock-5))
(t (make-thread (lambda () (mutex-lock! m)) 'mutex-lock-5))
(success #f))
(thread-start! t)
(thread-join! t)
(with-exception-handler
(lambda (obj) (set! success (abandoned-mutex-exception? obj)))
(lambda () (mutex-lock! m)))
(and success (eq? (mutex-state m) (current-thread)))))
(pass-if "sleeping threads notified of abandonment"
(let* ((m1 (make-mutex 'mutex-lock-6a))
(m2 (make-mutex 'mutex-lock-6b))
(c (make-condition-variable 'mutex-lock-6))
(t (make-thread (lambda ()
(mutex-lock! m1)
(mutex-lock! m2)
(condition-variable-signal! c))))
(success #f))
(mutex-lock! m1)
(thread-start! t)
(with-exception-handler
(lambda (obj) (set! success (abandoned-mutex-exception? obj)))
(lambda () (mutex-unlock! m1 c) (mutex-lock! m2)))
success)))
(with-test-prefix "mutex-unlock!"
(pass-if "unlock changes mutex state"
(let* ((m (make-mutex 'mutex-unlock-1)))
(mutex-lock! m)
(mutex-unlock! m)
(eq? (mutex-state m) 'not-abandoned)))
(pass-if "can unlock from any thread"
(let* ((m (make-mutex 'mutex-unlock-2))
(t (make-thread (lambda () (mutex-unlock! m)) 'mutex-unlock-2)))
(mutex-lock! m)
(thread-start! t)
(thread-join! t)
(eq? (mutex-state m) 'not-abandoned)))
(pass-if "recursive lock waits"
(let* ((m (make-mutex 'mutex-unlock-2))
(t (make-thread (lambda ()
(mutex-lock! m)
(mutex-lock! m 0.1)
(mutex-unlock! m))
'mutex-unlock-2)))
(thread-start! t)
(thread-join! t)
(eq? (mutex-state m) 'not-abandoned)))
(pass-if "recursive lock unblocked by second thread"
(let* ((m1 (make-mutex))
(m2 (make-mutex))
(c (make-condition-variable)))
(mutex-lock! m1)
(let ((t (make-thread (lambda ()
(mutex-lock! m1)
(mutex-lock! m2)
(condition-variable-signal! c)
(mutex-unlock! m1)
(mutex-lock! m2)
(mutex-unlock! m2)))))
(thread-start! t)
(mutex-unlock! m1 c)
;; At this point the thread signaled that it has both m1 and
;; m2, and it will go to try to lock m2 again. We wait for it
;; to block trying to acquire m2 by sleeping a little bit and
;; then unblock it by unlocking m2 from here.
(usleep #e1e5)
(mutex-unlock! m2)
(thread-join! t)
(eq? (mutex-state m2) 'not-abandoned))))
(pass-if "mutex unlock is true when condition is signaled"
(let* ((m (make-mutex 'mutex-unlock-3))
(c (make-condition-variable 'mutex-unlock-3))
(t (make-thread (lambda ()
(mutex-lock! m)
(condition-variable-signal! c)
(mutex-unlock! m)))))
(mutex-lock! m)
(thread-start! t)
(mutex-unlock! m c)))
(pass-if "mutex unlock is false when condition times out"
(let* ((m (make-mutex 'mutex-unlock-4))
(c (make-condition-variable 'mutex-unlock-4)))
(mutex-lock! m)
(not (mutex-unlock! m c 1)))))
(with-test-prefix "condition-variable?"
(pass-if "make-condition-variable creates condition variable"
(condition-variable? (make-condition-variable)))
(pass-if "symbol not condition variable"
(not (condition-variable? 'foo))))
(with-test-prefix "condition-variable-name"
(pass-if "make-condition-variable with name binds name"
(let* ((c (make-condition-variable 'condition-variable-name-1)))
(eq? (condition-variable-name c) 'condition-variable-name-1)))
(pass-if "make-condition-variable without name does not bind name"
(let* ((c (make-condition-variable)))
(not (condition-variable-name c)))))
(with-test-prefix "condition-variable-specific"
(pass-if "condition-variable-specific is initially #f"
(let ((c (make-condition-variable 'condition-variable-specific-1)))
(not (condition-variable-specific c))))
(pass-if "condition-variable-specific-set! can set value"
(let ((c (make-condition-variable 'condition-variable-specific-1)))
(condition-variable-specific-set! c "hello")
(equal? (condition-variable-specific c) "hello"))))
(with-test-prefix "condition-variable-signal!"
(pass-if "condition-variable-signal! wakes up single thread"
(let* ((m (make-mutex 'condition-variable-signal-1))
(c (make-condition-variable 'condition-variable-signal-1))
(t (make-thread (lambda ()
(mutex-lock! m)
(condition-variable-signal! c)
(mutex-unlock! m)))))
(mutex-lock! m)
(thread-start! t)
(mutex-unlock! m c))))
(with-test-prefix "condition-variable-broadcast!"
(pass-if "condition-variable-broadcast! wakes up multiple threads"
(let* ((sem 0)
(c1 (make-condition-variable 'condition-variable-broadcast-1-a))
(m1 (make-mutex 'condition-variable-broadcast-1-a))
(c2 (make-condition-variable 'condition-variable-broadcast-1-b))
(m2 (make-mutex 'condition-variable-broadcast-1-b))
(inc-sem! (lambda ()
(mutex-lock! m1)
(set! sem (+ sem 1))
(condition-variable-broadcast! c1)
(mutex-unlock! m1)))
(dec-sem! (lambda ()
(mutex-lock! m1)
(while (eqv? sem 0)
(mutex-unlock! m1 c1)
(mutex-lock! m1))
(set! sem (- sem 1))
(mutex-unlock! m1)))
(t1 (make-thread (lambda ()
(mutex-lock! m2)
(inc-sem!)
(mutex-unlock! m2 c2)
(inc-sem!))))
(t2 (make-thread (lambda ()
(mutex-lock! m2)
(inc-sem!)
(mutex-unlock! m2 c2)
(inc-sem!)))))
(thread-start! t1)
(thread-start! t2)
(dec-sem!)
(dec-sem!)
(mutex-lock! m2)
(condition-variable-broadcast! c2)
(mutex-unlock! m2)
(dec-sem!)
(dec-sem!))))
(with-test-prefix "time?"
(pass-if "current-time is time" (time? (current-time)))
(pass-if "number is not time" (not (time? 123)))
(pass-if "symbol not time" (not (time? 'foo))))
(with-test-prefix "time->seconds"
(pass-if "time->seconds makes time into rational"
(rational? (time->seconds (current-time))))
(pass-if "time->seconds is reversible"
(let ((t (current-time)))
(equal? t (seconds->time (time->seconds t))))))
(with-test-prefix "seconds->time"
(pass-if "seconds->time makes rational into time"
(time? (seconds->time 123.456)))
(pass-if "seconds->time is reversible"
(let ((t (time->seconds (current-time))))
(equal? t (time->seconds (seconds->time t))))))
(with-test-prefix "current-exception-handler"
(pass-if "current handler returned at top level"
(procedure? (current-exception-handler)))
(pass-if-equal "specified handler set under with-exception-handler"
'nothing
(let ((h (lambda (exn) 'nothing)))
(with-exception-handler
h
(lambda () ((current-exception-handler) #f)))))
(pass-if-equal "multiple levels of handler nesting"
42
(with-exception-handler
(lambda (exn) (+ exn 20))
(lambda ()
(with-exception-handler
(lambda (exn) (raise (+ exn 12)))
(lambda () (raise 10))))))
(pass-if "exception handler installation is thread-safe"
(let* ((h2 (lambda (exn) 'nothing-2))
(m (make-mutex 'current-exception-handler-4))
(c (make-condition-variable 'current-exception-handler-4))
(t (make-thread (lambda ()
(with-exception-handler
h2 (lambda ()
(mutex-lock! m)
(condition-variable-signal! c)
(mutex-unlock! m c)
(mutex-lock! m)
(and (eq? (raise #f) 'nothing-2)
(mutex-unlock! m)))))
'current-exception-handler-4)))
(mutex-lock! m)
(thread-start! t)
(mutex-unlock! m c)
(mutex-lock! m)
(and (condition-variable-signal! c)
(mutex-unlock! m)
(thread-join! t)))))
(with-test-prefix "uncaught-exception-reason"
(pass-if "initial handler captures top level exception"
(let ((t (make-thread (lambda () (raise 'foo))))
(success #f))
(thread-start! t)
(with-exception-handler
(lambda (obj)
(and (uncaught-exception? obj)
(eq? (uncaught-exception-reason obj) 'foo)
(set! success #t)))
(lambda () (thread-join! t)))
success))
(pass-if "initial handler captures non-SRFI-18 throw"
(let ((t (make-thread (lambda () (throw 'foo))))
(success #f))
(thread-start! t)
(with-exception-handler
(lambda (obj)
(and (uncaught-exception? obj)
(equal? (exception-kind (uncaught-exception-reason obj))
'foo)
(equal? (exception-args (uncaught-exception-reason obj))
'())
(set! success #t)))
(lambda () (thread-join! t)))
success)))))
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