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 (with-test (:name (:grab-mutex :waitp nil))
342 (let ((m (make-mutex)))
344 (assert (null (join-thread (make-thread
346 (grab-mutex m :waitp nil)))))))))
348 (with-test (:name (:grab-mutex :timeout :acquisition-fail))
350 (error "Mutex timeout not supported here.")
351 (let ((m (make-mutex)))
353 (assert (null (join-thread (make-thread
355 (grab-mutex m :timeout 0.1)))))))))
357 (with-test (:name (:grab-mutex :timeout :acquisition-success))
359 (error "Mutex timeout not supported here.")
360 (let ((m (make-mutex))
363 (setq child (make-thread #'(lambda () (grab-mutex m :timeout 1.0))))
365 (assert (eq (join-thread child) 't))))
367 (with-test (:name (:grab-mutex :timeout+deadline))
369 (error "Mutex timeout not supported here.")
370 (let ((m (make-mutex)))
372 (assert (eq (join-thread
373 (make-thread #'(lambda ()
374 (sb-sys:with-deadline (:seconds 0.0)
376 (grab-mutex m :timeout 0.0)
377 (sb-sys:deadline-timeout ()
381 (with-test (:name (:grab-mutex :waitp+deadline))
383 (error "Mutex timeout not supported here.")
384 (let ((m (make-mutex)))
386 (assert (eq (join-thread
387 (make-thread #'(lambda ()
388 (sb-sys:with-deadline (:seconds 0.0)
390 (grab-mutex m :waitp nil)
391 (sb-sys:deadline-timeout ()
397 (defmacro raises-timeout-p (&body body)
398 `(handler-case (progn (progn ,@body) nil)
399 (sb-ext:timeout () t)))
401 (with-test (:name (:semaphore :wait-forever))
402 (let ((sem (make-semaphore :count 0)))
403 (assert (raises-timeout-p
404 (sb-ext:with-timeout 0.1
405 (wait-on-semaphore sem))))))
407 (with-test (:name (:semaphore :initial-count))
408 (let ((sem (make-semaphore :count 1)))
409 (sb-ext:with-timeout 0.1
410 (wait-on-semaphore sem))))
412 (with-test (:name (:semaphore :wait-then-signal))
413 (let ((sem (make-semaphore))
415 (make-thread (lambda ()
418 (signal-semaphore sem)))
419 (wait-on-semaphore sem)
420 (assert signalled-p)))
422 (with-test (:name (:semaphore :signal-then-wait))
423 (let ((sem (make-semaphore))
425 (make-thread (lambda ()
426 (signal-semaphore sem)
427 (setq signalled-p t)))
428 (loop until signalled-p)
429 (wait-on-semaphore sem)
430 (assert signalled-p)))
432 (defun test-semaphore-multiple-signals (wait-on-semaphore)
433 (let* ((sem (make-semaphore :count 5))
434 (threads (loop repeat 20 collecting
435 (make-thread (lambda ()
436 (funcall wait-on-semaphore sem))))))
437 (flet ((count-live-threads ()
438 (count-if #'thread-alive-p threads)))
440 (assert (= 15 (count-live-threads)))
441 (signal-semaphore sem 10)
443 (assert (= 5 (count-live-threads)))
444 (signal-semaphore sem 3)
446 (assert (= 2 (count-live-threads)))
447 (signal-semaphore sem 4)
449 (assert (= 0 (count-live-threads))))))
451 (with-test (:name (:semaphore :multiple-signals))
452 (test-semaphore-multiple-signals #'wait-on-semaphore))
454 (with-test (:name (:try-semaphore :trivial-fail))
455 (assert (eq (try-semaphore (make-semaphore :count 0)) 'nil)))
457 (with-test (:name (:try-semaphore :trivial-success))
458 (let ((sem (make-semaphore :count 1)))
459 (assert (try-semaphore sem))
460 (assert (zerop (semaphore-count sem)))))
462 (with-test (:name (:try-semaphore :trivial-fail :n>1))
463 (assert (eq (try-semaphore (make-semaphore :count 1) 2) 'nil)))
465 (with-test (:name (:try-semaphore :trivial-success :n>1))
466 (let ((sem (make-semaphore :count 10)))
467 (assert (try-semaphore sem 5))
468 (assert (try-semaphore sem 5))
469 (assert (zerop (semaphore-count sem)))))
471 (with-test (:name (:try-semaphore :emulate-wait-on-semaphore))
472 (flet ((busy-wait-on-semaphore (sem)
473 (loop until (try-semaphore sem) do (sleep 0.001))))
474 (test-semaphore-multiple-signals #'busy-wait-on-semaphore)))
476 ;;; Here we test that interrupting TRY-SEMAPHORE does not leave a
477 ;;; semaphore in a bad state.
478 (with-test (:name (:try-semaphore :interrupt-safe))
479 (flet ((make-threads (count fn)
480 (loop repeat count collect (make-thread fn)))
481 (kill-thread (thread)
482 (when (thread-alive-p thread)
483 (ignore-errors (terminate-thread thread))))
484 (count-live-threads (threads)
485 (count-if #'thread-alive-p threads)))
486 ;; WAITERS will already be waiting on the semaphore while
487 ;; threads-being-interrupted will perform TRY-SEMAPHORE on that
488 ;; semaphore, and MORE-WAITERS are new threads trying to wait on
489 ;; the semaphore during the interruption-fire.
490 (let* ((sem (make-semaphore :count 100))
491 (waiters (make-threads 20 #'(lambda ()
492 (wait-on-semaphore sem))))
493 (triers (make-threads 40 #'(lambda ()
494 (sleep (random 0.01))
495 (try-semaphore sem (1+ (random 5))))))
498 do (kill-thread (nth (random 40) triers))
499 collect (make-thread #'(lambda () (wait-on-semaphore sem)))
500 do (kill-thread (nth (random 40) triers)))))
502 ;; Now ensure that the waiting threads will all be waked up,
503 ;; i.e. that the semaphore is still working.
504 (loop repeat (+ (count-live-threads waiters)
505 (count-live-threads more-waiters))
506 do (signal-semaphore sem))
508 (assert (zerop (count-live-threads triers)))
509 (assert (zerop (count-live-threads waiters)))
510 (assert (zerop (count-live-threads more-waiters))))))
514 (format t "~&semaphore tests done~%")
516 (defun test-interrupt (function-to-interrupt &optional quit-p)
517 (let ((child (make-thread function-to-interrupt)))
518 ;;(format t "gdb ./src/runtime/sbcl ~A~%attach ~A~%" child child)
520 (format t "interrupting child ~A~%" child)
521 (interrupt-thread child
523 (format t "child pid ~A~%" *current-thread*)
524 (when quit-p (sb-ext:quit))))
528 ;; separate tests for (a) interrupting Lisp code, (b) C code, (c) a syscall,
529 ;; (d) waiting on a lock, (e) some code which we hope is likely to be
532 (with-test (:name (:interrupt-thread :more-basics))
533 (let ((child (test-interrupt (lambda () (loop)))))
534 (terminate-thread child)))
536 (with-test (:name (:interrupt-thread :interrupt-foreign-loop))
537 (test-interrupt #'loop-forever :quit))
539 (with-test (:name (:interrupt-thread :interrupt-sleep))
540 (let ((child (test-interrupt (lambda () (loop (sleep 2000))))))
541 (terminate-thread child)
542 (wait-for-threads (list child))))
544 (with-test (:name (:interrupt-thread :interrupt-mutex-acquisition))
545 (let ((lock (make-mutex :name "loctite"))
548 (setf child (test-interrupt
551 (assert (eql (mutex-value lock) *current-thread*)))
552 (assert (not (eql (mutex-value lock) *current-thread*)))
554 ;;hold onto lock for long enough that child can't get it immediately
556 (interrupt-thread child (lambda () (format t "l ~A~%" (mutex-value lock))))
557 (format t "parent releasing lock~%"))
558 (terminate-thread child)
559 (wait-for-threads (list child))))
561 (format t "~&locking test done~%")
563 (defun alloc-stuff () (copy-list '(1 2 3 4 5)))
565 (with-test (:name (:interrupt-thread :interrupt-consing-child))
567 (error "Hangs on Darwin.")
568 (let ((thread (sb-thread:make-thread (lambda () (loop (alloc-stuff))))))
570 (loop repeat 4 collect
571 (sb-thread:make-thread
574 (sleep (random 0.1d0))
577 (sb-thread:interrupt-thread thread (lambda ()))))))))
578 (wait-for-threads killers)
579 (sb-thread:terminate-thread thread)
580 (wait-for-threads (list thread))))
583 (format t "~&multi interrupt test done~%")
585 #+(or x86 x86-64) ;; x86oid-only, see internal commentary.
586 (with-test (:name (:interrupt-thread :interrupt-consing-child :again))
588 (error "Hangs on Darwin.")
589 (let ((c (make-thread (lambda () (loop (alloc-stuff))))))
590 ;; NB this only works on x86: other ports don't have a symbol for
591 ;; pseudo-atomic atomicity
593 (sleep (random 0.1d0))
596 (princ ".") (force-output)
597 (assert (thread-alive-p *current-thread*))
599 (not (logbitp 0 SB-KERNEL:*PSEUDO-ATOMIC-BITS*))))))
601 (wait-for-threads (list c))))
603 (format t "~&interrupt test done~%")
605 (defstruct counter (n 0 :type sb-vm:word))
606 (defvar *interrupt-counter* (make-counter))
608 (declaim (notinline check-interrupt-count))
609 (defun check-interrupt-count (i)
610 (declare (optimize (debug 1) (speed 1)))
611 ;; This used to lose if eflags were not restored after an interrupt.
612 (unless (typep i 'fixnum)
613 (error "!!!!!!!!!!!")))
615 (with-test (:name (:interrupt-thread :interrupt-ATOMIC-INCF))
616 (let ((c (make-thread
618 (handler-bind ((error #'(lambda (cond)
621 most-positive-fixnum))))
622 (loop (check-interrupt-count
623 (counter-n *interrupt-counter*))))))))
624 (let ((func (lambda ()
627 (sb-ext:atomic-incf (counter-n *interrupt-counter*)))))
628 (setf (counter-n *interrupt-counter*) 0)
630 (sleep (random 0.1d0))
631 (interrupt-thread c func))
632 (loop until (= (counter-n *interrupt-counter*) 100) do (sleep 0.1))
634 (wait-for-threads (list c)))))
636 (format t "~&interrupt count test done~%")
638 (defvar *runningp* nil)
640 (with-test (:name (:interrupt-thread :no-nesting))
641 (let ((thread (sb-thread:make-thread
645 (declare (special runningp))
647 (sb-thread:interrupt-thread thread
649 (let ((*runningp* t))
652 (sb-thread:interrupt-thread thread
654 (throw 'xxx *runningp*)))
655 (assert (not (sb-thread:join-thread thread)))))
657 (with-test (:name (:interrupt-thread :nesting))
658 (let ((thread (sb-thread:make-thread
662 (declare (special runningp))
664 (sb-thread:interrupt-thread thread
666 (let ((*runningp* t))
667 (sb-sys:with-interrupts
670 (sb-thread:interrupt-thread thread
672 (throw 'xxx *runningp*)))
673 (assert (sb-thread:join-thread thread))))
675 (with-test (:name (:two-threads-running-gc))
677 (error "Hangs on Darwin.")
679 (make-thread (lambda ()
681 (sb-ext:gc) (princ "\\") (force-output))
683 (make-thread (lambda ()
686 (princ "/") (force-output))
689 (when (and a-done b-done) (return))
694 (defun waste (&optional (n 100000))
695 (loop repeat n do (make-string 16384)))
697 (with-test (:name (:one-thread-runs-gc-while-other-conses))
698 (loop for i below 100 do
701 (sb-thread:make-thread
709 (defparameter *aaa* nil)
710 (with-test (:name (:one-thread-runs-gc-while-other-conses :again))
711 (loop for i below 100 do
714 (sb-thread:make-thread
716 (let ((*aaa* (waste)))
718 (let ((*aaa* (waste)))
722 (format t "~&gc test done~%")
724 ;; this used to deadlock on session-lock
725 (with-test (:name (:no-session-deadlock))
726 (sb-thread:make-thread (lambda () (sb-ext:gc))))
728 (defun exercise-syscall (fn reference-errno)
729 (sb-thread:make-thread
733 (let ((errno (sb-unix::get-errno)))
734 (sleep (random 0.1d0))
735 (unless (eql errno reference-errno)
736 (format t "Got errno: ~A (~A) instead of ~A~%"
741 (sb-ext:quit :unix-status 1)))))))
743 ;; (nanosleep -1 0) does not fail on FreeBSD
744 (with-test (:name (:exercising-concurrent-syscalls))
746 (nanosleep-errno (progn
747 (sb-unix:nanosleep -1 0)
748 (sb-unix::get-errno)))
751 :if-does-not-exist nil)
752 (sb-unix::get-errno)))
756 (exercise-syscall (lambda () (sb-unix:nanosleep -1 0)) nanosleep-errno)
757 (exercise-syscall (lambda () (open "no-such-file"
758 :if-does-not-exist nil))
760 (sb-thread:make-thread (lambda () (loop (sb-ext:gc) (sleep 1)))))))
762 (princ "terminating threads")
763 (dolist (thread threads)
764 (sb-thread:terminate-thread thread))))
766 (format t "~&errno test done~%")
768 (with-test (:name (:terminate-thread-restart))
770 (let ((thread (sb-thread:make-thread (lambda () (sleep 0.1)))))
771 (sb-thread:interrupt-thread
774 (assert (find-restart 'sb-thread:terminate-thread)))))))
778 (format t "~&thread startup sigmask test done~%")
780 (with-test (:name (:debugger-no-hang-on-session-lock-if-interrupted))
781 (sb-debug::enable-debugger)
782 (let* ((main-thread *current-thread*)
784 (make-thread (lambda ()
786 (interrupt-thread main-thread
791 (interrupt-thread main-thread #'continue))
792 :name "interruptor")))
793 (with-session-lock (*session*)
795 (loop while (thread-alive-p interruptor-thread))))
797 (format t "~&session lock test done~%")
799 ;; expose thread creation races by exiting quickly
800 (with-test (:name (:no-thread-creation-race :light))
801 (sb-thread:make-thread (lambda ())))
803 (with-test (:name (:no-thread-creation-race :heavy))
806 (loop for i below 100 collect
807 (sb-thread:make-thread (lambda ()))))))
809 (format t "~&creation test done~%")
811 ;; interrupt handlers are per-thread with pthreads, make sure the
812 ;; handler installed in one thread is global
813 (with-test (:name (:global-interrupt-handler))
814 (sb-thread:make-thread
816 (sb-ext:run-program "sleep" '("1") :search t :wait nil))))
818 ;;;; Binding stack safety
820 (defparameter *x* nil)
821 (defparameter *n-gcs-requested* 0)
822 (defparameter *n-gcs-done* 0)
825 (defun make-something-big ()
826 (let ((x (make-string 32000)))
828 (let ((counter counter))
829 (sb-ext:finalize x (lambda () (format t " ~S" counter)
832 (defmacro wait-for-gc ()
834 (incf *n-gcs-requested*)
835 (loop while (< *n-gcs-done* *n-gcs-requested*))))
838 (loop until (< *n-gcs-done* *n-gcs-requested*))
844 (defun exercise-binding ()
846 (let ((*x* (make-something-big)))
848 ;; at this point the binding stack looks like this:
849 ;; NO-TLS-VALUE-MARKER, *x*, SOMETHING, *x*
852 ;; sig_stop_for_gc_handler binds FREE_INTERRUPT_CONTEXT_INDEX. By
853 ;; now SOMETHING is gc'ed and the binding stack looks like this: 0,
854 ;; 0, SOMETHING, 0 (because the symbol slots are zeroed on
855 ;; unbinding but values are not).
857 ;; bump bsp as if a BIND had just started
858 (incf sb-vm::*binding-stack-pointer* 2)
860 (decf sb-vm::*binding-stack-pointer* 2))))
862 (with-test (:name (:binding-stack-gc-safety))
866 (push (sb-thread:make-thread #'exercise-binding) threads)
867 (push (sb-thread:make-thread (lambda ()
873 (mapc #'sb-thread:terminate-thread threads))))
875 (format t "~&binding test done~%")
879 (defvar *errors* nil)
883 (format t "~&oops: ~A in ~S~%" e *current-thread*)
887 (with-test (:name (:unsynchronized-hash-table))
888 ;; We expect a (probable) error here: parellel readers and writers
889 ;; on a hash-table are not expected to work -- but we also don't
890 ;; expect this to corrupt the image.
891 (let* ((hash (make-hash-table))
893 (threads (list (sb-thread:make-thread
896 (handler-bind ((serious-condition 'oops))
898 ;;(princ "1") (force-output)
899 (setf (gethash (random 100) hash) 'h)))))
901 (sb-thread:make-thread
904 (handler-bind ((serious-condition 'oops))
906 ;;(princ "2") (force-output)
907 (remhash (random 100) hash)))))
909 (sb-thread:make-thread
912 (handler-bind ((serious-condition 'oops))
915 (sb-ext:gc :full t)))))
916 :name "collector"))))
919 (mapc #'sb-thread:terminate-thread threads))))
921 (format t "~&unsynchronized hash table test done~%")
923 (with-test (:name (:synchronized-hash-table))
924 (let* ((hash (make-hash-table :synchronized t))
926 (threads (list (sb-thread:make-thread
929 (handler-bind ((serious-condition 'oops))
931 ;;(princ "1") (force-output)
932 (setf (gethash (random 100) hash) 'h)))))
934 (sb-thread:make-thread
937 (handler-bind ((serious-condition 'oops))
939 ;;(princ "2") (force-output)
940 (remhash (random 100) hash)))))
942 (sb-thread:make-thread
945 (handler-bind ((serious-condition 'oops))
948 (sb-ext:gc :full t)))))
949 :name "collector"))))
952 (mapc #'sb-thread:terminate-thread threads))
953 (assert (not *errors*))))
955 (format t "~&synchronized hash table test done~%")
957 (with-test (:name (:hash-table-parallel-readers))
958 (let ((hash (make-hash-table))
961 do (setf (gethash (random 100) hash) 'xxx))
962 (let ((threads (list (sb-thread:make-thread
965 (handler-bind ((serious-condition 'oops))
967 until (eq t (gethash (random 100) hash))))))
969 (sb-thread:make-thread
972 (handler-bind ((serious-condition 'oops))
974 until (eq t (gethash (random 100) hash))))))
976 (sb-thread:make-thread
979 (handler-bind ((serious-condition 'oops))
981 until (eq t (gethash (random 100) hash))))))
983 (sb-thread:make-thread
986 (handler-bind ((serious-condition 'oops))
989 (sb-ext:gc :full t)))))
990 :name "collector"))))
993 (mapc #'sb-thread:terminate-thread threads))
994 (assert (not *errors*)))))
996 (format t "~&multiple reader hash table test done~%")
998 (with-test (:name (:hash-table-single-accessor-parallel-gc))
1000 (error "Prone to hang on Darwin due to interrupt issues.")
1001 (let ((hash (make-hash-table))
1003 (let ((threads (list (sb-thread:make-thread
1005 (handler-bind ((serious-condition 'oops))
1007 (let ((n (random 100)))
1008 (if (gethash n hash)
1010 (setf (gethash n hash) 'h))))))
1012 (sb-thread:make-thread
1014 (handler-bind ((serious-condition 'oops))
1016 (sleep (random 1.0))
1017 (sb-ext:gc :full t))))
1018 :name "collector"))))
1021 (mapc #'sb-thread:terminate-thread threads))
1022 (assert (not *errors*)))))
1024 (format t "~&single accessor hash table test~%")
1026 #| ;; a cll post from eric marsden
1028 | (setq *debugger-hook*
1029 | (lambda (condition old-debugger-hook)
1030 | (debug:backtrace 10)
1031 | (unix:unix-exit 2)))
1032 | #+live-dangerously
1033 | (mp::start-sigalrm-yield)
1034 | (flet ((roomy () (loop (with-output-to-string (*standard-output*) (room)))))
1035 | (mp:make-process #'roomy)
1036 | (mp:make-process #'roomy)))
1039 (with-test (:name (:condition-variable :notify-multiple))
1040 (flet ((tester (notify-fun)
1041 (let ((queue (make-waitqueue :name "queue"))
1042 (lock (make-mutex :name "lock"))
1047 (format t "condition-wait ~a~%" x)
1049 (condition-wait queue lock)
1050 (format t "woke up ~a~%" x)
1053 (let ((threads (loop for x from 1 to 10
1056 (sb-thread:make-thread (lambda ()
1060 (funcall notify-fun queue))
1062 (mapcar #'terminate-thread threads)
1063 ;; Check that all threads woke up at least once
1064 (assert (= (length (remove-duplicates data)) 10)))))))
1065 (tester (lambda (queue)
1066 (format t "~&(condition-notify queue 10)~%")
1068 (condition-notify queue 10)))
1069 (tester (lambda (queue)
1070 (format t "~&(condition-broadcast queue)~%")
1072 (condition-broadcast queue)))))
1074 (format t "waitqueue wakeup tests done~%")
1076 ;;; Make sure that a deadline handler is not invoked twice in a row in
1077 ;;; CONDITION-WAIT. See LP #512914 for a detailed explanation.
1079 #-sb-lutex ; See KLUDGE above: no deadlines for condition-wait+lutexes.
1080 (with-test (:name (:condition-wait :deadlines :LP-512914))
1081 (let ((n 2) ; was empirically enough to trigger the bug
1082 (mutex (sb-thread:make-mutex))
1083 (waitq (sb-thread:make-waitqueue))
1085 (deadline-handler-run-twice? nil))
1088 (sb-thread:make-thread
1091 ((sb-sys:deadline-timeout
1092 (let ((already? nil))
1095 (setq deadline-handler-run-twice? t))
1098 (sb-thread:condition-broadcast waitq)
1099 (sb-sys:defer-deadline 10.0 c)))))
1100 (sb-sys:with-deadline (:seconds 0.1)
1101 (sb-thread:with-mutex (mutex)
1102 (sb-thread:condition-wait waitq mutex))))))))
1103 (push child threads)))
1104 (mapc #'sb-thread:join-thread threads)
1105 (assert (not deadline-handler-run-twice?))))
1107 (with-test (:name (:condition-wait :signal-deadline-with-interrupts-enabled))
1109 (error "Bad Darwin")
1110 (let ((mutex (sb-thread:make-mutex))
1111 (waitq (sb-thread:make-waitqueue))
1114 (A-interrupts-enabled? :unknown)
1115 (B-interrupts-enabled? :unknown)
1118 ;; W.L.O.G., we assume that A is executed first...
1119 (setq A (sb-thread:make-thread
1122 ((sb-sys:deadline-timeout
1124 ;; We came here through the call to DECODE-TIMEOUT
1125 ;; in CONDITION-WAIT; hence both here are supposed
1126 ;; to evaluate to T.
1127 (setq A-holds? (sb-thread:holding-mutex-p mutex))
1128 (setq A-interrupts-enabled?
1129 sb-sys:*interrupts-enabled*)
1131 (sb-thread:condition-broadcast waitq)
1132 (sb-sys:defer-deadline 10.0 c))))
1133 (sb-sys:with-deadline (:seconds 0.1)
1134 (sb-thread:with-mutex (mutex)
1135 (sb-thread:condition-wait waitq mutex)))))))
1136 (setq B (sb-thread:make-thread
1140 ((sb-sys:deadline-timeout
1142 ;; We came here through the call to GET-MUTEX
1143 ;; in CONDITION-WAIT (contended case of
1144 ;; reaquiring the mutex) - so the former will
1145 ;; be NIL, but interrupts should still be enabled.
1146 (setq B-holds? (sb-thread:holding-mutex-p mutex))
1147 (setq B-interrupts-enabled?
1148 sb-sys:*interrupts-enabled*)
1150 (sb-thread:condition-broadcast waitq)
1151 (sb-sys:defer-deadline 10.0 c))))
1152 (sb-sys:with-deadline (:seconds 0.1)
1153 (sb-thread:with-mutex (mutex)
1154 (sb-thread:condition-wait waitq mutex)))))))
1155 (sb-thread:join-thread A)
1156 (sb-thread:join-thread B)
1157 (let ((A-result (list A-holds? A-interrupts-enabled?))
1158 (B-result (list B-holds? B-interrupts-enabled?)))
1159 ;; We also check some subtle behaviour w.r.t. whether a deadline
1160 ;; handler in CONDITION-WAIT got the mutex, or not. This is most
1161 ;; probably very internal behaviour (so user should not depend
1162 ;; on it) -- I added the testing here just to manifest current
1164 (cond ((equal A-result '(t t)) (assert (equal B-result '(nil t))))
1165 ((equal B-result '(t t)) (assert (equal A-result '(nil t))))
1166 (t (error "Failure: fall through."))))))
1168 (with-test (:name (:mutex :finalization))
1171 (setf a (make-mutex)))))
1173 (format t "mutex finalization test done~%")
1175 ;;; Check that INFO is thread-safe, at least when we're just doing reads.
1177 (let* ((symbols (loop repeat 10000 collect (gensym)))
1178 (functions (loop for (symbol . rest) on symbols
1179 for next = (car rest)
1180 for fun = (let ((next next))
1183 (funcall next (1- n))
1185 do (setf (symbol-function symbol) fun)
1187 (defun infodb-test ()
1188 (funcall (car functions) 9999)))
1190 (with-test (:name (:infodb :read))
1192 (threads (loop for i from 0 to 10
1193 collect (sb-thread:make-thread
1198 (let ((n (infodb-test)))
1201 (format t "N != 0 (~A)~%" n)
1202 (sb-ext:quit)))))))))
1203 (wait-for-threads threads)
1206 (format t "infodb test done~%")
1208 (with-test (:name (:backtrace))
1210 (error "Prone to crash on Darwin, cause unknown.")
1211 ;; Printing backtraces from several threads at once used to hang the
1212 ;; whole SBCL process (discovered by accident due to a timer.impure
1213 ;; test misbehaving). The cause was that packages weren't even
1214 ;; thread-safe for only doing FIND-SYMBOL, and while printing
1215 ;; backtraces a loot of symbol lookups need to be done due to
1217 (let* ((threads (loop repeat 10
1218 collect (sb-thread:make-thread
1221 (with-output-to-string (*debug-io*)
1222 (sb-debug::backtrace 10))))))))
1223 (wait-for-threads threads)))
1225 (format t "backtrace test done~%")
1227 (format t "~&starting gc deadlock test: WARNING: THIS TEST WILL HANG ON FAILURE!~%")
1229 (with-test (:name (:gc-deadlock))
1231 (error "Prone to hang on Darwin due to interrupt issues.")
1232 ;; Prior to 0.9.16.46 thread exit potentially deadlocked the
1233 ;; GC due to *all-threads-lock* and session lock. On earlier
1234 ;; versions and at least on one specific box this test is good enough
1235 ;; to catch that typically well before the 1500th iteration.
1242 (when (zerop (mod i 100))
1247 (sb-thread:make-thread
1249 (sleep (random 0.001)))
1250 :name (format nil "SLEEP-~D" i))
1251 (sb-thread:make-thread
1253 ;; KLUDGE: what we are doing here is explicit,
1254 ;; but the same can happen because of a regular
1255 ;; MAKE-THREAD or LIST-ALL-THREADS, and various
1256 ;; session functions.
1257 (sb-thread::with-all-threads-lock
1258 (sb-thread::with-session-lock (sb-thread::*session*)
1260 :name (format nil "GC-~D" i)))
1262 (format t "~%error creating thread ~D: ~A -- backing off for retry~%" i e)
1266 (format t "~&gc deadlock test done~%")
1268 (let ((count (make-array 8 :initial-element 0)))
1269 (defun closure-one ()
1270 (declare (optimize safety))
1271 (values (incf (aref count 0)) (incf (aref count 1))
1272 (incf (aref count 2)) (incf (aref count 3))
1273 (incf (aref count 4)) (incf (aref count 5))
1274 (incf (aref count 6)) (incf (aref count 7))))
1275 (defun no-optimizing-away-closure-one ()
1276 (setf count (make-array 8 :initial-element 0))))
1281 (let ((one (make-box))
1284 (defun closure-two ()
1285 (declare (optimize safety))
1286 (values (incf (box-count one)) (incf (box-count two)) (incf (box-count three))))
1287 (defun no-optimizing-away-closure-two ()
1288 (setf one (make-box)
1292 (with-test (:name (:funcallable-instances))
1293 ;; the funcallable-instance implementation used not to be threadsafe
1294 ;; against setting the funcallable-instance function to a closure
1295 ;; (because the code and lexenv were set separately).
1296 (let ((fun (sb-kernel:%make-funcallable-instance 0))
1298 (setf (sb-kernel:funcallable-instance-fun fun) #'closure-one)
1300 (loop (setf (sb-kernel:funcallable-instance-fun fun) #'closure-one)
1301 (setf (sb-kernel:funcallable-instance-fun fun) #'closure-two)))
1303 (handler-case (loop (funcall fun))
1304 (serious-condition (c) (setf condition c)))))
1305 (let ((changer (make-thread #'changer))
1306 (test (make-thread #'test)))
1309 ;; The two closures above are fairly carefully crafted
1310 ;; so that if given the wrong lexenv they will tend to
1311 ;; do some serious damage, but it is of course difficult
1312 ;; to predict where the various bits and pieces will be
1313 ;; allocated. Five seconds failed fairly reliably on
1314 ;; both my x86 and x86-64 systems. -- CSR, 2006-09-27.
1315 (sb-ext:with-timeout 5
1316 (wait-for-threads (list test)))
1317 (error "~@<test thread got condition:~2I~_~A~@:>" condition))
1319 (terminate-thread changer)
1320 (terminate-thread test)
1321 (wait-for-threads (list changer test))))))))
1323 (format t "~&funcallable-instance test done~%")
1325 (defun random-type (n)
1326 `(integer ,(random n) ,(+ n (random n))))
1328 (defun subtypep-hash-cache-test ()
1330 (let ((type1 (random-type 500))
1331 (type2 (random-type 500)))
1332 (let ((a (subtypep type1 type2)))
1334 (assert (eq (subtypep type1 type2) a))))))
1338 (with-test (:name '(:hash-cache :subtypep))
1340 (sb-thread:make-thread #'subtypep-hash-cache-test)))
1341 (format t "hash-cache tests done~%")
1343 ;;;; BLACK BOX TESTS
1345 (in-package :cl-user)
1346 (use-package :test-util)
1347 (use-package "ASSERTOID")
1349 (format t "parallel defclass test -- WARNING, WILL HANG ON FAILURE!~%")
1350 (with-test (:name :parallel-defclass)
1351 (defclass test-1 () ((a :initform :orig-a)))
1352 (defclass test-2 () ((b :initform :orig-b)))
1353 (defclass test-3 (test-1 test-2) ((c :initform :orig-c)))
1355 (d1 (sb-thread:make-thread (lambda ()
1357 do (defclass test-1 () ((a :initform :new-a)))
1361 (d2 (sb-thread:make-thread (lambda ()
1363 do (defclass test-2 () ((b :initform :new-b)))
1367 (d3 (sb-thread:make-thread (lambda ()
1369 do (defclass test-3 (test-1 test-2) ((c :initform :new-c)))
1373 (i (sb-thread:make-thread (lambda ()
1375 do (let ((i (make-instance 'test-3)))
1376 (assert (member (slot-value i 'a) '(:orig-a :new-a)))
1377 (assert (member (slot-value i 'b) '(:orig-b :new-b)))
1378 (assert (member (slot-value i 'c) '(:orig-c :new-c))))
1382 (format t "~%sleeping!~%")
1384 (format t "~%stopping!~%")
1387 (sb-thread:join-thread th)
1388 (format t "~%joined ~S~%" (sb-thread:thread-name th)))
1389 (list d1 d2 d3 i))))
1390 (format t "parallel defclass test done~%")