1 ;;;; miscellaneous tests of thread stuff
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; While most of SBCL is derived from the CMU CL system, the test
7 ;;;; files (like this one) were written from scratch after the fork
10 ;;;; This software is in the public domain and is provided with
11 ;;;; absoluely no warranty. See the COPYING and CREDITS files for
12 ;;;; more information.
16 (in-package "SB-THREAD")
17 (use-package :test-util)
18 (use-package "ASSERTOID")
20 (setf sb-unix::*on-dangerous-select* :error)
22 (defun wait-for-threads (threads)
23 (mapc (lambda (thread) (sb-thread:join-thread thread :default nil)) threads)
24 (assert (not (some #'sb-thread:thread-alive-p threads))))
26 (with-test (:name (:threads :trivia))
27 (assert (eql 1 (length (list-all-threads))))
29 (assert (eq *current-thread*
30 (find (thread-name *current-thread*) (list-all-threads)
31 :key #'thread-name :test #'equal)))
33 (assert (thread-alive-p *current-thread*)))
35 (with-test (:name (:with-mutex :basics))
36 (let ((mutex (make-mutex)))
40 (with-test (:name (:with-spinlock :basics))
41 (let ((spinlock (make-spinlock)))
42 (with-spinlock (spinlock))))
44 (sb-alien:define-alien-routine "check_deferrables_blocked_or_lose"
46 (where sb-alien:unsigned-long))
47 (sb-alien:define-alien-routine "check_deferrables_unblocked_or_lose"
49 (where sb-alien:unsigned-long))
51 (with-test (:name (:interrupt-thread :basics :no-unwinding))
53 (interrupt-thread *current-thread* (lambda () (setq a 1)))
56 (with-test (:name (:interrupt-thread :deferrables-blocked))
57 (sb-thread:interrupt-thread sb-thread:*current-thread*
59 (check-deferrables-blocked-or-lose 0))))
61 (with-test (:name (:interrupt-thread :deferrables-unblocked))
62 (sb-thread:interrupt-thread sb-thread:*current-thread*
65 (check-deferrables-unblocked-or-lose 0)))))
67 (with-test (:name (:interrupt-thread :nlx))
69 (sb-thread:interrupt-thread sb-thread:*current-thread*
71 (check-deferrables-blocked-or-lose 0)
73 (check-deferrables-unblocked-or-lose 0))
75 #-sb-thread (sb-ext:quit :unix-status 104)
77 ;;;; Now the real tests...
79 (with-test (:name (:interrupt-thread :deferrables-unblocked-by-spinlock))
80 (let ((spinlock (sb-thread::make-spinlock))
81 (thread (sb-thread:make-thread (lambda ()
83 (sb-thread::get-spinlock spinlock)
84 (sb-thread:interrupt-thread thread
86 (check-deferrables-blocked-or-lose 0)
87 (sb-thread::get-spinlock spinlock)
88 (check-deferrables-unblocked-or-lose 0)
91 (sb-thread::release-spinlock spinlock)))
95 (defmacro defincf (name accessor &rest args)
97 (let* ((old (,accessor x ,@args))
99 (loop until (eq old (sb-ext:compare-and-swap (,accessor x ,@args) old new))
100 do (setf old (,accessor x ,@args)
104 (defstruct cas-struct (slot 0))
106 (defincf incf-car car)
107 (defincf incf-cdr cdr)
108 (defincf incf-slot cas-struct-slot)
109 (defincf incf-symbol-value symbol-value)
110 (defincf incf-svref/1 svref 1)
111 (defincf incf-svref/0 svref 0)
113 (defmacro def-test-cas (name init incf op)
114 `(with-test (:name ,name)
121 collect (sb-thread:make-thread
124 do (sb-thread:thread-yield))
125 (loop repeat n do (,incf x)))))))
128 (sb-thread:join-thread th))
129 (assert (= (,op x) (* 10 n))))))
132 (def-test-cas test-cas-car (cons 0 nil) incf-car car)
133 (def-test-cas test-cas-cdr (cons nil 0) incf-cdr cdr)
134 (def-test-cas test-cas-slot (make-cas-struct) incf-slot cas-struct-slot)
135 (def-test-cas test-cas-value (let ((x '.x.))
138 incf-symbol-value symbol-value)
139 (def-test-cas test-cas-svref/0 (vector 0 nil) incf-svref/0 (lambda (x)
141 (def-test-cas test-cas-svref/1 (vector nil 0) incf-svref/1 (lambda (x)
143 (format t "~&compare-and-swap tests done~%")
145 (with-test (:name (:threads :more-trivia)))
146 (let ((old-threads (list-all-threads))
147 (thread (make-thread (lambda ()
148 (assert (find *current-thread* *all-threads*))
150 (new-threads (list-all-threads)))
151 (assert (thread-alive-p thread))
152 (assert (eq thread (first new-threads)))
153 (assert (= (1+ (length old-threads)) (length new-threads)))
155 (assert (not (thread-alive-p thread))))
157 (with-test (:name '(:join-thread :nlx :default))
158 (let ((sym (gensym)))
159 (assert (eq sym (join-thread (make-thread (lambda () (sb-ext:quit)))
162 (with-test (:name '(:join-thread :nlx :error))
163 (raises-error? (join-thread (make-thread (lambda () (sb-ext:quit))))
166 (with-test (:name '(:join-thread :multiple-values))
167 (assert (equal '(1 2 3)
169 (join-thread (make-thread (lambda () (values 1 2 3))))))))
171 ;;; We had appalling scaling properties for a while. Make sure they
173 (defun scaling-test (function &optional (nthreads 5))
174 "Execute FUNCTION with NTHREADS lurking to slow it down."
175 (let ((queue (sb-thread:make-waitqueue))
176 (mutex (sb-thread:make-mutex)))
177 ;; Start NTHREADS idle threads.
178 (dotimes (i nthreads)
179 (sb-thread:make-thread (lambda ()
181 (sb-thread:condition-wait queue mutex))
183 (let ((start-time (get-internal-run-time)))
185 (prog1 (- (get-internal-run-time) start-time)
186 (sb-thread:condition-broadcast queue)))))
188 "A function that does work with the CPU."
189 (if (zerop n) 1 (* n (fact (1- n)))))
190 (let ((work (lambda () (fact 15000))))
191 (let ((zero (scaling-test work 0))
192 (four (scaling-test work 4)))
193 ;; a slightly weak assertion, but good enough for starters.
194 (assert (< four (* 1.5 zero)))))
196 ;;; For one of the interupt-thread tests, we want a foreign function
197 ;;; that does not make syscalls
199 (with-open-file (o "threads-foreign.c" :direction :output :if-exists :supersede)
200 (format o "void loop_forever() { while(1) ; }~%"))
202 #-sunos "cc" #+sunos "gcc"
203 (or #+(or linux freebsd sunos) '(#+x86-64 "-fPIC"
204 "-shared" "-o" "threads-foreign.so" "threads-foreign.c")
205 #+darwin '(#+x86-64 "-arch" #+x86-64 "x86_64"
206 "-dynamiclib" "-o" "threads-foreign.so" "threads-foreign.c")
207 (error "Missing shared library compilation options for this platform"))
209 (sb-alien:load-shared-object (truename "threads-foreign.so"))
210 (sb-alien:define-alien-routine loop-forever sb-alien:void)
211 (delete-file "threads-foreign.c")
214 ;;; elementary "can we get a lock and release it again"
215 (with-test (:name (:mutex :basics))
216 (let ((l (make-mutex :name "foo"))
217 (p *current-thread*))
218 (assert (eql (mutex-value l) nil) nil "1")
219 (sb-thread:get-mutex l)
220 (assert (eql (mutex-value l) p) nil "3")
221 (sb-thread:release-mutex l)
222 (assert (eql (mutex-value l) nil) nil "5")))
224 (with-test (:name (:with-recursive-lock :basics))
225 (labels ((ours-p (value)
226 (eq *current-thread* value)))
227 (let ((l (make-mutex :name "rec")))
228 (assert (eql (mutex-value l) nil) nil "1")
229 (sb-thread:with-recursive-lock (l)
230 (assert (ours-p (mutex-value l)) nil "3")
231 (sb-thread:with-recursive-lock (l)
232 (assert (ours-p (mutex-value l)) nil "4"))
233 (assert (ours-p (mutex-value l)) nil "5"))
234 (assert (eql (mutex-value l) nil) nil "6"))))
236 (with-test (:name (:with-recursive-spinlock :basics))
237 (labels ((ours-p (value)
238 (eq *current-thread* value)))
239 (let ((l (make-spinlock :name "rec")))
240 (assert (eql (spinlock-value l) nil) nil "1")
241 (with-recursive-spinlock (l)
242 (assert (ours-p (spinlock-value l)) nil "3")
243 (with-recursive-spinlock (l)
244 (assert (ours-p (spinlock-value l)) nil "4"))
245 (assert (ours-p (spinlock-value l)) nil "5"))
246 (assert (eql (spinlock-value l) nil) nil "6"))))
248 (with-test (:name (:mutex :nesting-mutex-and-recursive-lock))
249 (let ((l (make-mutex :name "a mutex")))
251 (with-recursive-lock (l)))))
253 (with-test (:name (:spinlock :nesting-spinlock-and-recursive-spinlock))
254 (let ((l (make-spinlock :name "a spinlock")))
256 (with-recursive-spinlock (l)))))
258 (with-test (:name (:spinlock :more-basics))
259 (let ((l (make-spinlock :name "spinlock")))
260 (assert (eql (spinlock-value l) nil) ((spinlock-value l))
261 "spinlock not free (1)")
263 (assert (eql (spinlock-value l) *current-thread*) ((spinlock-value l))
264 "spinlock not taken"))
265 (assert (eql (spinlock-value l) nil) ((spinlock-value l))
266 "spinlock not free (2)")))
268 ;; test that SLEEP actually sleeps for at least the given time, even
269 ;; if interrupted by another thread exiting/a gc/anything
270 (with-test (:name (:sleep :continue-sleeping-after-interrupt))
271 (let ((start-time (get-universal-time)))
272 (make-thread (lambda () (sleep 1) (sb-ext:gc :full t)))
274 (assert (>= (get-universal-time) (+ 5 start-time)))))
277 (with-test (:name (:condition-wait :basics-1))
278 (let ((queue (make-waitqueue :name "queue"))
279 (lock (make-mutex :name "lock"))
281 (labels ((in-new-thread ()
283 (assert (eql (mutex-value lock) *current-thread*))
284 (format t "~A got mutex~%" *current-thread*)
285 ;; now drop it and sleep
286 (condition-wait queue lock)
287 ;; after waking we should have the lock again
288 (assert (eql (mutex-value lock) *current-thread*))
291 (make-thread #'in-new-thread)
292 (sleep 2) ; give it a chance to start
293 ;; check the lock is free while it's asleep
294 (format t "parent thread ~A~%" *current-thread*)
295 (assert (eql (mutex-value lock) nil))
298 (condition-notify queue))
301 (with-test (:name (:condition-wait :basics-2))
302 (let ((queue (make-waitqueue :name "queue"))
303 (lock (make-mutex :name "lock")))
304 (labels ((ours-p (value)
305 (eq *current-thread* value))
307 (with-recursive-lock (lock)
308 (assert (ours-p (mutex-value lock)))
309 (format t "~A got mutex~%" (mutex-value lock))
310 ;; now drop it and sleep
311 (condition-wait queue lock)
312 ;; after waking we should have the lock again
313 (format t "woken, ~A got mutex~%" (mutex-value lock))
314 (assert (ours-p (mutex-value lock))))))
315 (make-thread #'in-new-thread)
316 (sleep 2) ; give it a chance to start
317 ;; check the lock is free while it's asleep
318 (format t "parent thread ~A~%" *current-thread*)
319 (assert (eql (mutex-value lock) nil))
320 (with-recursive-lock (lock)
321 (condition-notify queue))
324 (with-test (:name (:mutex :contention))
325 (let ((mutex (make-mutex :name "contended")))
327 (let ((me *current-thread*))
331 (assert (eql (mutex-value mutex) me)))
332 (assert (not (eql (mutex-value mutex) me))))
333 (format t "done ~A~%" *current-thread*))))
334 (let ((kid1 (make-thread #'run))
335 (kid2 (make-thread #'run)))
336 (format t "contention ~A ~A~%" kid1 kid2)
337 (wait-for-threads (list kid1 kid2))))))
341 (defmacro raises-timeout-p (&body body)
342 `(handler-case (progn (progn ,@body) nil)
343 (sb-ext:timeout () t)))
345 (with-test (:name (:semaphore :wait-forever))
346 (let ((sem (make-semaphore :count 0)))
347 (assert (raises-timeout-p
348 (sb-ext:with-timeout 0.1
349 (wait-on-semaphore sem))))))
351 (with-test (:name (:semaphore :initial-count))
352 (let ((sem (make-semaphore :count 1)))
353 (sb-ext:with-timeout 0.1
354 (wait-on-semaphore sem))))
356 (with-test (:name (:semaphore :wait-then-signal))
357 (let ((sem (make-semaphore))
359 (make-thread (lambda ()
362 (signal-semaphore sem)))
363 (wait-on-semaphore sem)
364 (assert signalled-p)))
366 (with-test (:name (:semaphore :signal-then-wait))
367 (let ((sem (make-semaphore))
369 (make-thread (lambda ()
370 (signal-semaphore sem)
371 (setq signalled-p t)))
372 (loop until signalled-p)
373 (wait-on-semaphore sem)
374 (assert signalled-p)))
376 (defun test-semaphore-multiple-signals (wait-on-semaphore)
377 (let* ((sem (make-semaphore :count 5))
378 (threads (loop repeat 20 collecting
379 (make-thread (lambda ()
380 (funcall wait-on-semaphore sem))))))
381 (flet ((count-live-threads ()
382 (count-if #'thread-alive-p threads)))
384 (assert (= 15 (count-live-threads)))
385 (signal-semaphore sem 10)
387 (assert (= 5 (count-live-threads)))
388 (signal-semaphore sem 3)
390 (assert (= 2 (count-live-threads)))
391 (signal-semaphore sem 4)
393 (assert (= 0 (count-live-threads))))))
395 (with-test (:name (:semaphore :multiple-signals))
396 (test-semaphore-multiple-signals #'wait-on-semaphore))
398 (with-test (:name (:try-semaphore :trivial-fail))
399 (assert (eq (try-semaphore (make-semaphore :count 0)) 'nil)))
401 (with-test (:name (:try-semaphore :trivial-success))
402 (let ((sem (make-semaphore :count 1)))
403 (assert (try-semaphore sem))
404 (assert (zerop (semaphore-count sem)))))
406 (with-test (:name (:try-semaphore :trivial-fail :n>1))
407 (assert (eq (try-semaphore (make-semaphore :count 1) 2) 'nil)))
409 (with-test (:name (:try-semaphore :trivial-success :n>1))
410 (let ((sem (make-semaphore :count 10)))
411 (assert (try-semaphore sem 5))
412 (assert (try-semaphore sem 5))
413 (assert (zerop (semaphore-count sem)))))
415 (with-test (:name (:try-semaphore :emulate-wait-on-semaphore))
416 (flet ((busy-wait-on-semaphore (sem)
417 (loop until (try-semaphore sem) do (sleep 0.001))))
418 (test-semaphore-multiple-signals #'busy-wait-on-semaphore)))
420 ;;; Here we test that interrupting TRY-SEMAPHORE does not leave a
421 ;;; semaphore in a bad state.
422 (with-test (:name (:try-semaphore :interrupt-safe))
423 (flet ((make-threads (count fn)
424 (loop repeat count collect (make-thread fn)))
425 (kill-thread (thread)
426 (when (thread-alive-p thread)
427 (ignore-errors (terminate-thread thread))))
428 (count-live-threads (threads)
429 (count-if #'thread-alive-p threads)))
430 ;; WAITERS will already be waiting on the semaphore while
431 ;; threads-being-interrupted will perform TRY-SEMAPHORE on that
432 ;; semaphore, and MORE-WAITERS are new threads trying to wait on
433 ;; the semaphore during the interruption-fire.
434 (let* ((sem (make-semaphore :count 100))
435 (waiters (make-threads 20 #'(lambda ()
436 (wait-on-semaphore sem))))
437 (triers (make-threads 40 #'(lambda ()
438 (sleep (random 0.01))
439 (try-semaphore sem (1+ (random 5))))))
442 do (kill-thread (nth (random 40) triers))
443 collect (make-thread #'(lambda () (wait-on-semaphore sem)))
444 do (kill-thread (nth (random 40) triers)))))
446 ;; Now ensure that the waiting threads will all be waked up,
447 ;; i.e. that the semaphore is still working.
448 (loop repeat (+ (count-live-threads waiters)
449 (count-live-threads more-waiters))
450 do (signal-semaphore sem))
452 (assert (zerop (count-live-threads triers)))
453 (assert (zerop (count-live-threads waiters)))
454 (assert (zerop (count-live-threads more-waiters))))))
458 (format t "~&semaphore tests done~%")
460 (defun test-interrupt (function-to-interrupt &optional quit-p)
461 (let ((child (make-thread function-to-interrupt)))
462 ;;(format t "gdb ./src/runtime/sbcl ~A~%attach ~A~%" child child)
464 (format t "interrupting child ~A~%" child)
465 (interrupt-thread child
467 (format t "child pid ~A~%" *current-thread*)
468 (when quit-p (sb-ext:quit))))
472 ;; separate tests for (a) interrupting Lisp code, (b) C code, (c) a syscall,
473 ;; (d) waiting on a lock, (e) some code which we hope is likely to be
476 (with-test (:name (:interrupt-thread :more-basics))
477 (let ((child (test-interrupt (lambda () (loop)))))
478 (terminate-thread child)))
480 (with-test (:name (:interrupt-thread :interrupt-foreign-loop))
481 (test-interrupt #'loop-forever :quit))
483 (with-test (:name (:interrupt-thread :interrupt-sleep))
484 (let ((child (test-interrupt (lambda () (loop (sleep 2000))))))
485 (terminate-thread child)
486 (wait-for-threads (list child))))
488 (with-test (:name (:interrupt-thread :interrupt-mutex-acquisition))
489 (let ((lock (make-mutex :name "loctite"))
492 (setf child (test-interrupt
495 (assert (eql (mutex-value lock) *current-thread*)))
496 (assert (not (eql (mutex-value lock) *current-thread*)))
498 ;;hold onto lock for long enough that child can't get it immediately
500 (interrupt-thread child (lambda () (format t "l ~A~%" (mutex-value lock))))
501 (format t "parent releasing lock~%"))
502 (terminate-thread child)
503 (wait-for-threads (list child))))
505 (format t "~&locking test done~%")
507 (defun alloc-stuff () (copy-list '(1 2 3 4 5)))
509 (with-test (:name (:interrupt-thread :interrupt-consing-child))
510 (let ((thread (sb-thread:make-thread (lambda () (loop (alloc-stuff))))))
512 (loop repeat 4 collect
513 (sb-thread:make-thread
516 (sleep (random 0.1d0))
519 (sb-thread:interrupt-thread thread (lambda ()))))))))
520 (wait-for-threads killers)
521 (sb-thread:terminate-thread thread)
522 (wait-for-threads (list thread))))
525 (format t "~&multi interrupt test done~%")
527 (with-test (:name (:interrupt-thread :interrupt-consing-child :again))
528 (let ((c (make-thread (lambda () (loop (alloc-stuff))))))
529 ;; NB this only works on x86: other ports don't have a symbol for
530 ;; pseudo-atomic atomicity
532 (sleep (random 0.1d0))
535 (princ ".") (force-output)
536 (assert (thread-alive-p *current-thread*))
538 (not (logbitp 0 SB-KERNEL:*PSEUDO-ATOMIC-BITS*))))))
540 (wait-for-threads (list c))))
542 (format t "~&interrupt test done~%")
544 (defstruct counter (n 0 :type sb-vm:word))
545 (defvar *interrupt-counter* (make-counter))
547 (declaim (notinline check-interrupt-count))
548 (defun check-interrupt-count (i)
549 (declare (optimize (debug 1) (speed 1)))
550 ;; This used to lose if eflags were not restored after an interrupt.
551 (unless (typep i 'fixnum)
552 (error "!!!!!!!!!!!")))
554 (with-test (:name (:interrupt-thread :interrupt-ATOMIC-INCF))
555 (let ((c (make-thread
557 (handler-bind ((error #'(lambda (cond)
560 most-positive-fixnum))))
561 (loop (check-interrupt-count
562 (counter-n *interrupt-counter*))))))))
563 (let ((func (lambda ()
566 (sb-ext:atomic-incf (counter-n *interrupt-counter*)))))
567 (setf (counter-n *interrupt-counter*) 0)
569 (sleep (random 0.1d0))
570 (interrupt-thread c func))
571 (loop until (= (counter-n *interrupt-counter*) 100) do (sleep 0.1))
573 (wait-for-threads (list c)))))
575 (format t "~&interrupt count test done~%")
577 (defvar *runningp* nil)
579 (with-test (:name (:interrupt-thread :no-nesting))
580 (let ((thread (sb-thread:make-thread
584 (declare (special runningp))
586 (sb-thread:interrupt-thread thread
588 (let ((*runningp* t))
591 (sb-thread:interrupt-thread thread
593 (throw 'xxx *runningp*)))
594 (assert (not (sb-thread:join-thread thread)))))
596 (with-test (:name (:interrupt-thread :nesting))
597 (let ((thread (sb-thread:make-thread
601 (declare (special runningp))
603 (sb-thread:interrupt-thread thread
605 (let ((*runningp* t))
606 (sb-sys:with-interrupts
609 (sb-thread:interrupt-thread thread
611 (throw 'xxx *runningp*)))
612 (assert (sb-thread:join-thread thread))))
614 (with-test (:name (:two-threads-running-gc))
616 (make-thread (lambda ()
618 (sb-ext:gc) (princ "\\") (force-output))
620 (make-thread (lambda ()
623 (princ "/") (force-output))
626 (when (and a-done b-done) (return))
631 (defun waste (&optional (n 100000))
632 (loop repeat n do (make-string 16384)))
634 (with-test (:name (:one-thread-runs-gc-while-other-conses))
635 (loop for i below 100 do
638 (sb-thread:make-thread
646 (defparameter *aaa* nil)
647 (with-test (:name (:one-thread-runs-gc-while-other-conses :again))
648 (loop for i below 100 do
651 (sb-thread:make-thread
653 (let ((*aaa* (waste)))
655 (let ((*aaa* (waste)))
659 (format t "~&gc test done~%")
661 ;; this used to deadlock on session-lock
662 (with-test (:name (:no-session-deadlock))
663 (sb-thread:make-thread (lambda () (sb-ext:gc))))
665 (defun exercise-syscall (fn reference-errno)
666 (sb-thread:make-thread
670 (let ((errno (sb-unix::get-errno)))
671 (sleep (random 0.1d0))
672 (unless (eql errno reference-errno)
673 (format t "Got errno: ~A (~A) instead of ~A~%"
678 (sb-ext:quit :unix-status 1)))))))
680 ;; (nanosleep -1 0) does not fail on FreeBSD
681 (with-test (:name (:exercising-concurrent-syscalls))
683 (nanosleep-errno (progn
684 (sb-unix:nanosleep -1 0)
685 (sb-unix::get-errno)))
688 :if-does-not-exist nil)
689 (sb-unix::get-errno)))
693 (exercise-syscall (lambda () (sb-unix:nanosleep -1 0)) nanosleep-errno)
694 (exercise-syscall (lambda () (open "no-such-file"
695 :if-does-not-exist nil))
697 (sb-thread:make-thread (lambda () (loop (sb-ext:gc) (sleep 1)))))))
699 (princ "terminating threads")
700 (dolist (thread threads)
701 (sb-thread:terminate-thread thread))))
703 (format t "~&errno test done~%")
705 (with-test (:name (:terminate-thread-restart))
707 (let ((thread (sb-thread:make-thread (lambda () (sleep 0.1)))))
708 (sb-thread:interrupt-thread
711 (assert (find-restart 'sb-thread:terminate-thread)))))))
715 (format t "~&thread startup sigmask test done~%")
717 (with-test (:name (:debugger-no-hang-on-session-lock-if-interrupted))
718 (sb-debug::enable-debugger)
719 (let* ((main-thread *current-thread*)
721 (make-thread (lambda ()
723 (interrupt-thread main-thread
728 (interrupt-thread main-thread #'continue))
729 :name "interruptor")))
730 (with-session-lock (*session*)
732 (loop while (thread-alive-p interruptor-thread))))
734 (format t "~&session lock test done~%")
736 ;; expose thread creation races by exiting quickly
737 (with-test (:name (:no-thread-creation-race :light))
738 (sb-thread:make-thread (lambda ())))
740 (with-test (:name (:no-thread-creation-race :heavy))
743 (loop for i below 100 collect
744 (sb-thread:make-thread (lambda ()))))))
746 (format t "~&creation test done~%")
748 ;; interrupt handlers are per-thread with pthreads, make sure the
749 ;; handler installed in one thread is global
750 (with-test (:name (:global-interrupt-handler))
751 (sb-thread:make-thread
753 (sb-ext:run-program "sleep" '("1") :search t :wait nil))))
755 ;;;; Binding stack safety
757 (defparameter *x* nil)
758 (defparameter *n-gcs-requested* 0)
759 (defparameter *n-gcs-done* 0)
762 (defun make-something-big ()
763 (let ((x (make-string 32000)))
765 (let ((counter counter))
766 (sb-ext:finalize x (lambda () (format t " ~S" counter)
769 (defmacro wait-for-gc ()
771 (incf *n-gcs-requested*)
772 (loop while (< *n-gcs-done* *n-gcs-requested*))))
775 (loop until (< *n-gcs-done* *n-gcs-requested*))
781 (defun exercise-binding ()
783 (let ((*x* (make-something-big)))
785 ;; at this point the binding stack looks like this:
786 ;; NO-TLS-VALUE-MARKER, *x*, SOMETHING, *x*
789 ;; sig_stop_for_gc_handler binds FREE_INTERRUPT_CONTEXT_INDEX. By
790 ;; now SOMETHING is gc'ed and the binding stack looks like this: 0,
791 ;; 0, SOMETHING, 0 (because the symbol slots are zeroed on
792 ;; unbinding but values are not).
794 ;; bump bsp as if a BIND had just started
795 (incf sb-vm::*binding-stack-pointer* 2)
797 (decf sb-vm::*binding-stack-pointer* 2))))
799 (with-test (:name (:binding-stack-gc-safety))
803 (push (sb-thread:make-thread #'exercise-binding) threads)
804 (push (sb-thread:make-thread (lambda ()
810 (mapc #'sb-thread:terminate-thread threads))))
812 (format t "~&binding test done~%")
816 (defvar *errors* nil)
820 (format t "~&oops: ~A in ~S~%" e *current-thread*)
824 (with-test (:name (:unsynchronized-hash-table))
825 ;; We expect a (probable) error here: parellel readers and writers
826 ;; on a hash-table are not expected to work -- but we also don't
827 ;; expect this to corrupt the image.
828 (let* ((hash (make-hash-table))
830 (threads (list (sb-thread:make-thread
833 (handler-bind ((serious-condition 'oops))
835 ;;(princ "1") (force-output)
836 (setf (gethash (random 100) hash) 'h)))))
838 (sb-thread:make-thread
841 (handler-bind ((serious-condition 'oops))
843 ;;(princ "2") (force-output)
844 (remhash (random 100) hash)))))
846 (sb-thread:make-thread
849 (handler-bind ((serious-condition 'oops))
852 (sb-ext:gc :full t)))))
853 :name "collector"))))
856 (mapc #'sb-thread:terminate-thread threads))))
858 (format t "~&unsynchronized hash table test done~%")
860 (with-test (:name (:synchronized-hash-table))
861 (let* ((hash (make-hash-table :synchronized t))
863 (threads (list (sb-thread:make-thread
866 (handler-bind ((serious-condition 'oops))
868 ;;(princ "1") (force-output)
869 (setf (gethash (random 100) hash) 'h)))))
871 (sb-thread:make-thread
874 (handler-bind ((serious-condition 'oops))
876 ;;(princ "2") (force-output)
877 (remhash (random 100) hash)))))
879 (sb-thread:make-thread
882 (handler-bind ((serious-condition 'oops))
885 (sb-ext:gc :full t)))))
886 :name "collector"))))
889 (mapc #'sb-thread:terminate-thread threads))
890 (assert (not *errors*))))
892 (format t "~&synchronized hash table test done~%")
894 (with-test (:name (:hash-table-parallel-readers))
895 (let ((hash (make-hash-table))
898 do (setf (gethash (random 100) hash) 'xxx))
899 (let ((threads (list (sb-thread:make-thread
902 (handler-bind ((serious-condition 'oops))
904 until (eq t (gethash (random 100) hash))))))
906 (sb-thread:make-thread
909 (handler-bind ((serious-condition 'oops))
911 until (eq t (gethash (random 100) hash))))))
913 (sb-thread:make-thread
916 (handler-bind ((serious-condition 'oops))
918 until (eq t (gethash (random 100) hash))))))
920 (sb-thread:make-thread
923 (handler-bind ((serious-condition 'oops))
926 (sb-ext:gc :full t)))))
927 :name "collector"))))
930 (mapc #'sb-thread:terminate-thread threads))
931 (assert (not *errors*)))))
933 (format t "~&multiple reader hash table test done~%")
935 (with-test (:name (:hash-table-single-accessor-parallel-gc))
936 (let ((hash (make-hash-table))
938 (let ((threads (list (sb-thread:make-thread
940 (handler-bind ((serious-condition 'oops))
942 (let ((n (random 100)))
945 (setf (gethash n hash) 'h))))))
947 (sb-thread:make-thread
949 (handler-bind ((serious-condition 'oops))
952 (sb-ext:gc :full t))))
953 :name "collector"))))
956 (mapc #'sb-thread:terminate-thread threads))
957 (assert (not *errors*)))))
959 (format t "~&single accessor hash table test~%")
961 #| ;; a cll post from eric marsden
963 | (setq *debugger-hook*
964 | (lambda (condition old-debugger-hook)
965 | (debug:backtrace 10)
966 | (unix:unix-exit 2)))
968 | (mp::start-sigalrm-yield)
969 | (flet ((roomy () (loop (with-output-to-string (*standard-output*) (room)))))
970 | (mp:make-process #'roomy)
971 | (mp:make-process #'roomy)))
974 ;;; KLUDGE: No deadlines while waiting on lutex-based condition variables. This test
977 (with-test (:name (:condition-variable :wait-multiple))
979 (let ((waitqueue (sb-thread:make-waitqueue :name "Q"))
980 (mutex (sb-thread:make-mutex :name "M"))
984 (let ((threads (loop repeat 200
986 (sb-thread:make-thread
989 (sb-sys:with-deadline (:seconds 0.01)
990 (sb-thread:with-mutex (mutex)
991 (sb-thread:condition-wait waitqueue
994 (sb-sys:deadline-timeout (c)
995 (declare (ignore c)))))))))
996 (mapc #'sb-thread:join-thread threads)
997 (assert (not failedp))))))
999 (with-test (:name (:condition-variable :notify-multiple))
1000 (flet ((tester (notify-fun)
1001 (let ((queue (make-waitqueue :name "queue"))
1002 (lock (make-mutex :name "lock"))
1007 (format t "condition-wait ~a~%" x)
1009 (condition-wait queue lock)
1010 (format t "woke up ~a~%" x)
1013 (let ((threads (loop for x from 1 to 10
1016 (sb-thread:make-thread (lambda ()
1020 (funcall notify-fun queue))
1022 (mapcar #'terminate-thread threads)
1023 ;; Check that all threads woke up at least once
1024 (assert (= (length (remove-duplicates data)) 10)))))))
1025 (tester (lambda (queue)
1026 (format t "~&(condition-notify queue 10)~%")
1028 (condition-notify queue 10)))
1029 (tester (lambda (queue)
1030 (format t "~&(condition-broadcast queue)~%")
1032 (condition-broadcast queue)))))
1034 (format t "waitqueue wakeup tests done~%")
1036 ;;; Make sure that a deadline handler is not invoked twice in a row in
1037 ;;; CONDITION-WAIT. See LP #512914 for a detailed explanation.
1039 #-sb-lutex ; See KLUDGE above: no deadlines for condition-wait+lutexes.
1040 (with-test (:name (:condition-wait :deadlines :LP-512914))
1041 (let ((n 2) ; was empirically enough to trigger the bug
1042 (mutex (sb-thread:make-mutex))
1043 (waitq (sb-thread:make-waitqueue))
1045 (deadline-handler-run-twice? nil))
1048 (sb-thread:make-thread
1051 ((sb-sys:deadline-timeout
1052 (let ((already? nil))
1055 (setq deadline-handler-run-twice? t))
1058 (sb-thread:condition-broadcast waitq)
1059 (sb-sys:defer-deadline 10.0 c)))))
1060 (sb-sys:with-deadline (:seconds 0.1)
1061 (sb-thread:with-mutex (mutex)
1062 (sb-thread:condition-wait waitq mutex))))))))
1063 (push child threads)))
1064 (mapc #'sb-thread:join-thread threads)
1065 (assert (not deadline-handler-run-twice?))))
1067 (with-test (:name (:condition-wait :signal-deadline-with-interrupts-enabled))
1068 (let ((mutex (sb-thread:make-mutex))
1069 (waitq (sb-thread:make-waitqueue))
1072 (A-interrupts-enabled? :unknown)
1073 (B-interrupts-enabled? :unknown)
1076 ;; W.L.O.G., we assume that A is executed first...
1077 (setq A (sb-thread:make-thread
1080 ((sb-sys:deadline-timeout
1082 ;; We came here through the call to DECODE-TIMEOUT
1083 ;; in CONDITION-WAIT; hence both here are supposed
1084 ;; to evaluate to T.
1085 (setq A-holds? (sb-thread:holding-mutex-p mutex))
1086 (setq A-interrupts-enabled?
1087 sb-sys:*interrupts-enabled*)
1089 (sb-thread:condition-broadcast waitq)
1090 (sb-sys:defer-deadline 10.0 c))))
1091 (sb-sys:with-deadline (:seconds 0.1)
1092 (sb-thread:with-mutex (mutex)
1093 (sb-thread:condition-wait waitq mutex)))))))
1094 (setq B (sb-thread:make-thread
1098 ((sb-sys:deadline-timeout
1100 ;; We came here through the call to GET-MUTEX
1101 ;; in CONDITION-WAIT (contended case of
1102 ;; reaquiring the mutex) - so the former will
1103 ;; be NIL, but interrupts should still be enabled.
1104 (setq B-holds? (sb-thread:holding-mutex-p mutex))
1105 (setq B-interrupts-enabled?
1106 sb-sys:*interrupts-enabled*)
1108 (sb-thread:condition-broadcast waitq)
1109 (sb-sys:defer-deadline 10.0 c))))
1110 (sb-sys:with-deadline (:seconds 0.1)
1111 (sb-thread:with-mutex (mutex)
1112 (sb-thread:condition-wait waitq mutex)))))))
1113 (sb-thread:join-thread A)
1114 (sb-thread:join-thread B)
1115 (let ((A-result (list A-holds? A-interrupts-enabled?))
1116 (B-result (list B-holds? B-interrupts-enabled?)))
1117 ;; We also check some subtle behaviour w.r.t. whether a deadline
1118 ;; handler in CONDITION-WAIT got the mutex, or not. This is most
1119 ;; probably very internal behaviour (so user should not depend
1120 ;; on it) -- I added the testing here just to manifest current
1122 (cond ((equal A-result '(t t)) (assert (equal B-result '(nil t))))
1123 ((equal B-result '(t t)) (assert (equal A-result '(nil t))))
1124 (t (error "Failure: fall through."))))))
1126 (with-test (:name (:mutex :finalization))
1129 (setf a (make-mutex)))))
1131 (format t "mutex finalization test done~%")
1133 ;;; Check that INFO is thread-safe, at least when we're just doing reads.
1135 (let* ((symbols (loop repeat 10000 collect (gensym)))
1136 (functions (loop for (symbol . rest) on symbols
1137 for next = (car rest)
1138 for fun = (let ((next next))
1141 (funcall next (1- n))
1143 do (setf (symbol-function symbol) fun)
1145 (defun infodb-test ()
1146 (funcall (car functions) 9999)))
1148 (with-test (:name (:infodb :read))
1150 (threads (loop for i from 0 to 10
1151 collect (sb-thread:make-thread
1156 (let ((n (infodb-test)))
1159 (format t "N != 0 (~A)~%" n)
1160 (sb-ext:quit)))))))))
1161 (wait-for-threads threads)
1164 (format t "infodb test done~%")
1166 (with-test (:name (:backtrace))
1167 ;; Printing backtraces from several threads at once used to hang the
1168 ;; whole SBCL process (discovered by accident due to a timer.impure
1169 ;; test misbehaving). The cause was that packages weren't even
1170 ;; thread-safe for only doing FIND-SYMBOL, and while printing
1171 ;; backtraces a loot of symbol lookups need to be done due to
1173 (let* ((threads (loop repeat 10
1174 collect (sb-thread:make-thread
1177 (with-output-to-string (*debug-io*)
1178 (sb-debug::backtrace 10))))))))
1179 (wait-for-threads threads)))
1181 (format t "backtrace test done~%")
1183 (format t "~&starting gc deadlock test: WARNING: THIS TEST WILL HANG ON FAILURE!~%")
1185 (with-test (:name (:gc-deadlock))
1186 ;; Prior to 0.9.16.46 thread exit potentially deadlocked the
1187 ;; GC due to *all-threads-lock* and session lock. On earlier
1188 ;; versions and at least on one specific box this test is good enough
1189 ;; to catch that typically well before the 1500th iteration.
1196 (when (zerop (mod i 100))
1201 (sb-thread:make-thread
1203 (sleep (random 0.001)))
1204 :name (format nil "SLEEP-~D" i))
1205 (sb-thread:make-thread
1207 ;; KLUDGE: what we are doing here is explicit,
1208 ;; but the same can happen because of a regular
1209 ;; MAKE-THREAD or LIST-ALL-THREADS, and various
1210 ;; session functions.
1211 (sb-thread::with-all-threads-lock
1212 (sb-thread::with-session-lock (sb-thread::*session*)
1214 :name (format nil "GC-~D" i)))
1216 (format t "~%error creating thread ~D: ~A -- backing off for retry~%" i e)
1220 (format t "~&gc deadlock test done~%")
1222 (let ((count (make-array 8 :initial-element 0)))
1223 (defun closure-one ()
1224 (declare (optimize safety))
1225 (values (incf (aref count 0)) (incf (aref count 1))
1226 (incf (aref count 2)) (incf (aref count 3))
1227 (incf (aref count 4)) (incf (aref count 5))
1228 (incf (aref count 6)) (incf (aref count 7))))
1229 (defun no-optimizing-away-closure-one ()
1230 (setf count (make-array 8 :initial-element 0))))
1235 (let ((one (make-box))
1238 (defun closure-two ()
1239 (declare (optimize safety))
1240 (values (incf (box-count one)) (incf (box-count two)) (incf (box-count three))))
1241 (defun no-optimizing-away-closure-two ()
1242 (setf one (make-box)
1246 (with-test (:name (:funcallable-instances))
1247 ;; the funcallable-instance implementation used not to be threadsafe
1248 ;; against setting the funcallable-instance function to a closure
1249 ;; (because the code and lexenv were set separately).
1250 (let ((fun (sb-kernel:%make-funcallable-instance 0))
1252 (setf (sb-kernel:funcallable-instance-fun fun) #'closure-one)
1254 (loop (setf (sb-kernel:funcallable-instance-fun fun) #'closure-one)
1255 (setf (sb-kernel:funcallable-instance-fun fun) #'closure-two)))
1257 (handler-case (loop (funcall fun))
1258 (serious-condition (c) (setf condition c)))))
1259 (let ((changer (make-thread #'changer))
1260 (test (make-thread #'test)))
1263 ;; The two closures above are fairly carefully crafted
1264 ;; so that if given the wrong lexenv they will tend to
1265 ;; do some serious damage, but it is of course difficult
1266 ;; to predict where the various bits and pieces will be
1267 ;; allocated. Five seconds failed fairly reliably on
1268 ;; both my x86 and x86-64 systems. -- CSR, 2006-09-27.
1269 (sb-ext:with-timeout 5
1270 (wait-for-threads (list test)))
1271 (error "~@<test thread got condition:~2I~_~A~@:>" condition))
1273 (terminate-thread changer)
1274 (terminate-thread test)
1275 (wait-for-threads (list changer test))))))))
1277 (format t "~&funcallable-instance test done~%")
1279 (defun random-type (n)
1280 `(integer ,(random n) ,(+ n (random n))))
1282 (defun subtypep-hash-cache-test ()
1284 (let ((type1 (random-type 500))
1285 (type2 (random-type 500)))
1286 (let ((a (subtypep type1 type2)))
1288 (assert (eq (subtypep type1 type2) a))))))
1292 (with-test (:name '(:hash-cache :subtypep))
1294 (sb-thread:make-thread #'subtypep-hash-cache-test)))
1295 (format t "hash-cache tests done~%")
1297 ;;;; BLACK BOX TESTS
1299 (in-package :cl-user)
1300 (use-package :test-util)
1301 (use-package "ASSERTOID")
1303 (format t "parallel defclass test -- WARNING, WILL HANG ON FAILURE!~%")
1304 (with-test (:name :parallel-defclass)
1305 (defclass test-1 () ((a :initform :orig-a)))
1306 (defclass test-2 () ((b :initform :orig-b)))
1307 (defclass test-3 (test-1 test-2) ((c :initform :orig-c)))
1309 (d1 (sb-thread:make-thread (lambda ()
1311 do (defclass test-1 () ((a :initform :new-a)))
1315 (d2 (sb-thread:make-thread (lambda ()
1317 do (defclass test-2 () ((b :initform :new-b)))
1321 (d3 (sb-thread:make-thread (lambda ()
1323 do (defclass test-3 (test-1 test-2) ((c :initform :new-c)))
1327 (i (sb-thread:make-thread (lambda ()
1329 do (let ((i (make-instance 'test-3)))
1330 (assert (member (slot-value i 'a) '(:orig-a :new-a)))
1331 (assert (member (slot-value i 'b) '(:orig-b :new-b)))
1332 (assert (member (slot-value i 'c) '(:orig-c :new-c))))
1336 (format t "~%sleeping!~%")
1338 (format t "~%stopping!~%")
1341 (sb-thread:join-thread th)
1342 (format t "~%joined ~S~%" (sb-thread:thread-name th)))
1343 (list d1 d2 d3 i))))
1344 (format t "parallel defclass test done~%")