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 (assert (eql 1 (length (list-all-threads))))
28 (assert (eq *current-thread*
29 (find (thread-name *current-thread*) (list-all-threads)
30 :key #'thread-name :test #'equal)))
32 (assert (thread-alive-p *current-thread*))
35 (interrupt-thread *current-thread* (lambda () (setq a 1)))
38 (let ((spinlock (make-spinlock)))
39 (with-spinlock (spinlock)))
41 (let ((mutex (make-mutex)))
45 (sb-alien:define-alien-routine "check_deferrables_blocked_or_lose"
47 (where sb-alien:unsigned-long))
48 (sb-alien:define-alien-routine "check_deferrables_unblocked_or_lose"
50 (where sb-alien:unsigned-long))
52 (with-test (:name (:interrupt-thread :deferrables-blocked))
53 (sb-thread:interrupt-thread sb-thread:*current-thread*
55 (check-deferrables-blocked-or-lose 0))))
57 (with-test (:name (:interrupt-thread :deferrables-unblocked))
58 (sb-thread:interrupt-thread sb-thread:*current-thread*
61 (check-deferrables-unblocked-or-lose 0)))))
63 (with-test (:name (:interrupt-thread :nlx))
65 (sb-thread:interrupt-thread sb-thread:*current-thread*
67 (check-deferrables-blocked-or-lose 0)
69 (check-deferrables-unblocked-or-lose 0))
71 #-sb-thread (sb-ext:quit :unix-status 104)
73 (with-test (:name (:interrupt-thread :deferrables-unblocked-by-spinlock))
74 (let ((spinlock (sb-thread::make-spinlock))
75 (thread (sb-thread:make-thread (lambda ()
77 (sb-thread::get-spinlock spinlock)
78 (sb-thread:interrupt-thread thread
80 (check-deferrables-blocked-or-lose 0)
81 (sb-thread::get-spinlock spinlock)
82 (check-deferrables-unblocked-or-lose 0)
85 (sb-thread::release-spinlock spinlock)))
89 (defmacro defincf (name accessor &rest args)
91 (let* ((old (,accessor x ,@args))
93 (loop until (eq old (sb-ext:compare-and-swap (,accessor x ,@args) old new))
94 do (setf old (,accessor x ,@args)
98 (defstruct cas-struct (slot 0))
100 (defincf incf-car car)
101 (defincf incf-cdr cdr)
102 (defincf incf-slot cas-struct-slot)
103 (defincf incf-symbol-value symbol-value)
104 (defincf incf-svref/1 svref 1)
105 (defincf incf-svref/0 svref 0)
107 (defmacro def-test-cas (name init incf op)
115 collect (sb-thread:make-thread
118 do (sb-thread:thread-yield))
119 (loop repeat n do (,incf x)))))))
122 (sb-thread:join-thread th))
123 (assert (= (,op x) (* 10 n)))))
126 (def-test-cas test-cas-car (cons 0 nil) incf-car car)
127 (def-test-cas test-cas-cdr (cons nil 0) incf-cdr cdr)
128 (def-test-cas test-cas-slot (make-cas-struct) incf-slot cas-struct-slot)
129 (def-test-cas test-cas-value (let ((x '.x.))
132 incf-symbol-value symbol-value)
133 (def-test-cas test-cas-svref/0 (vector 0 nil) incf-svref/0 (lambda (x)
135 (def-test-cas test-cas-svref/1 (vector nil 0) incf-svref/1 (lambda (x)
137 (format t "~&compare-and-swap tests done~%")
139 (let ((old-threads (list-all-threads))
140 (thread (make-thread (lambda ()
141 (assert (find *current-thread* *all-threads*))
143 (new-threads (list-all-threads)))
144 (assert (thread-alive-p thread))
145 (assert (eq thread (first new-threads)))
146 (assert (= (1+ (length old-threads)) (length new-threads)))
148 (assert (not (thread-alive-p thread))))
150 (with-test (:name '(:join-thread :nlx :default))
151 (let ((sym (gensym)))
152 (assert (eq sym (join-thread (make-thread (lambda () (sb-ext:quit)))
155 (with-test (:name '(:join-thread :nlx :error))
156 (raises-error? (join-thread (make-thread (lambda () (sb-ext:quit))))
159 (with-test (:name '(:join-thread :multiple-values))
160 (assert (equal '(1 2 3)
162 (join-thread (make-thread (lambda () (values 1 2 3))))))))
164 ;;; We had appalling scaling properties for a while. Make sure they
166 (defun scaling-test (function &optional (nthreads 5))
167 "Execute FUNCTION with NTHREADS lurking to slow it down."
168 (let ((queue (sb-thread:make-waitqueue))
169 (mutex (sb-thread:make-mutex)))
170 ;; Start NTHREADS idle threads.
171 (dotimes (i nthreads)
172 (sb-thread:make-thread (lambda ()
174 (sb-thread:condition-wait queue mutex))
176 (let ((start-time (get-internal-run-time)))
178 (prog1 (- (get-internal-run-time) start-time)
179 (sb-thread:condition-broadcast queue)))))
181 "A function that does work with the CPU."
182 (if (zerop n) 1 (* n (fact (1- n)))))
183 (let ((work (lambda () (fact 15000))))
184 (let ((zero (scaling-test work 0))
185 (four (scaling-test work 4)))
186 ;; a slightly weak assertion, but good enough for starters.
187 (assert (< four (* 1.5 zero)))))
189 ;;; For one of the interupt-thread tests, we want a foreign function
190 ;;; that does not make syscalls
192 (with-open-file (o "threads-foreign.c" :direction :output :if-exists :supersede)
193 (format o "void loop_forever() { while(1) ; }~%"))
195 #-sunos "cc" #+sunos "gcc"
196 (or #+(or linux freebsd sunos) '(#+x86-64 "-fPIC"
197 "-shared" "-o" "threads-foreign.so" "threads-foreign.c")
198 #+darwin '(#+x86-64 "-arch" #+x86-64 "x86_64"
199 "-dynamiclib" "-o" "threads-foreign.so" "threads-foreign.c")
200 (error "Missing shared library compilation options for this platform"))
202 (sb-alien:load-shared-object (truename "threads-foreign.so"))
203 (sb-alien:define-alien-routine loop-forever sb-alien:void)
204 (delete-file "threads-foreign.c")
206 ;;; elementary "can we get a lock and release it again"
207 (let ((l (make-mutex :name "foo"))
208 (p *current-thread*))
209 (assert (eql (mutex-value l) nil) nil "1")
210 (sb-thread:get-mutex l)
211 (assert (eql (mutex-value l) p) nil "3")
212 (sb-thread:release-mutex l)
213 (assert (eql (mutex-value l) nil) nil "5"))
215 (labels ((ours-p (value)
216 (eq *current-thread* value)))
217 (let ((l (make-mutex :name "rec")))
218 (assert (eql (mutex-value l) nil) nil "1")
219 (sb-thread:with-recursive-lock (l)
220 (assert (ours-p (mutex-value l)) nil "3")
221 (sb-thread:with-recursive-lock (l)
222 (assert (ours-p (mutex-value l)) nil "4"))
223 (assert (ours-p (mutex-value l)) nil "5"))
224 (assert (eql (mutex-value l) nil) nil "6")))
226 (labels ((ours-p (value)
227 (eq *current-thread* value)))
228 (let ((l (make-spinlock :name "rec")))
229 (assert (eql (spinlock-value l) nil) nil "1")
230 (with-recursive-spinlock (l)
231 (assert (ours-p (spinlock-value l)) nil "3")
232 (with-recursive-spinlock (l)
233 (assert (ours-p (spinlock-value l)) nil "4"))
234 (assert (ours-p (spinlock-value l)) nil "5"))
235 (assert (eql (spinlock-value l) nil) nil "6")))
237 (with-test (:name (:mutex :nesting-mutex-and-recursive-lock))
238 (let ((l (make-mutex :name "a mutex")))
240 (with-recursive-lock (l)))))
242 (with-test (:name (:spinlock :nesting-spinlock-and-recursive-spinlock))
243 (let ((l (make-spinlock :name "a spinlock")))
245 (with-recursive-spinlock (l)))))
247 (let ((l (make-spinlock :name "spinlock")))
248 (assert (eql (spinlock-value l) nil) ((spinlock-value l))
249 "spinlock not free (1)")
251 (assert (eql (spinlock-value l) *current-thread*) ((spinlock-value l))
252 "spinlock not taken"))
253 (assert (eql (spinlock-value l) nil) ((spinlock-value l))
254 "spinlock not free (2)"))
256 ;; test that SLEEP actually sleeps for at least the given time, even
257 ;; if interrupted by another thread exiting/a gc/anything
258 (let ((start-time (get-universal-time)))
259 (make-thread (lambda () (sleep 1) (sb-ext:gc :full t)))
261 (assert (>= (get-universal-time) (+ 5 start-time))))
264 (let ((queue (make-waitqueue :name "queue"))
265 (lock (make-mutex :name "lock"))
267 (labels ((in-new-thread ()
269 (assert (eql (mutex-value lock) *current-thread*))
270 (format t "~A got mutex~%" *current-thread*)
271 ;; now drop it and sleep
272 (condition-wait queue lock)
273 ;; after waking we should have the lock again
274 (assert (eql (mutex-value lock) *current-thread*))
277 (make-thread #'in-new-thread)
278 (sleep 2) ; give it a chance to start
279 ;; check the lock is free while it's asleep
280 (format t "parent thread ~A~%" *current-thread*)
281 (assert (eql (mutex-value lock) nil))
284 (condition-notify queue))
287 (let ((queue (make-waitqueue :name "queue"))
288 (lock (make-mutex :name "lock")))
289 (labels ((ours-p (value)
290 (eq *current-thread* value))
292 (with-recursive-lock (lock)
293 (assert (ours-p (mutex-value lock)))
294 (format t "~A got mutex~%" (mutex-value lock))
295 ;; now drop it and sleep
296 (condition-wait queue lock)
297 ;; after waking we should have the lock again
298 (format t "woken, ~A got mutex~%" (mutex-value lock))
299 (assert (ours-p (mutex-value lock))))))
300 (make-thread #'in-new-thread)
301 (sleep 2) ; give it a chance to start
302 ;; check the lock is free while it's asleep
303 (format t "parent thread ~A~%" *current-thread*)
304 (assert (eql (mutex-value lock) nil))
305 (with-recursive-lock (lock)
306 (condition-notify queue))
309 (let ((mutex (make-mutex :name "contended")))
311 (let ((me *current-thread*))
315 (assert (eql (mutex-value mutex) me)))
316 (assert (not (eql (mutex-value mutex) me))))
317 (format t "done ~A~%" *current-thread*))))
318 (let ((kid1 (make-thread #'run))
319 (kid2 (make-thread #'run)))
320 (format t "contention ~A ~A~%" kid1 kid2)
321 (wait-for-threads (list kid1 kid2)))))
325 (defmacro raises-timeout-p (&body body)
326 `(handler-case (progn (progn ,@body) nil)
327 (sb-ext:timeout () t)))
329 (with-test (:name (:semaphore :wait-forever))
330 (let ((sem (make-semaphore :count 0)))
331 (assert (raises-timeout-p
332 (sb-ext:with-timeout 0.1
333 (wait-on-semaphore sem))))))
335 (with-test (:name (:semaphore :initial-count))
336 (let ((sem (make-semaphore :count 1)))
337 (sb-ext:with-timeout 0.1
338 (wait-on-semaphore sem))))
340 (with-test (:name (:semaphore :wait-then-signal))
341 (let ((sem (make-semaphore))
343 (make-thread (lambda ()
346 (signal-semaphore sem)))
347 (wait-on-semaphore sem)
348 (assert signalled-p)))
350 (with-test (:name (:semaphore :signal-then-wait))
351 (let ((sem (make-semaphore))
353 (make-thread (lambda ()
354 (signal-semaphore sem)
355 (setq signalled-p t)))
356 (loop until signalled-p)
357 (wait-on-semaphore sem)
358 (assert signalled-p)))
360 (defun test-semaphore-multiple-signals (wait-on-semaphore)
361 (let* ((sem (make-semaphore :count 5))
362 (threads (loop repeat 20 collecting
363 (make-thread (lambda ()
364 (funcall wait-on-semaphore sem))))))
365 (flet ((count-live-threads ()
366 (count-if #'thread-alive-p threads)))
368 (assert (= 15 (count-live-threads)))
369 (signal-semaphore sem 10)
371 (assert (= 5 (count-live-threads)))
372 (signal-semaphore sem 3)
374 (assert (= 2 (count-live-threads)))
375 (signal-semaphore sem 4)
377 (assert (= 0 (count-live-threads))))))
379 (with-test (:name (:semaphore :multiple-signals))
380 (test-semaphore-multiple-signals #'wait-on-semaphore))
382 (with-test (:name (:try-semaphore :trivial-fail))
383 (assert (eq (try-semaphore (make-semaphore :count 0)) 'nil)))
385 (with-test (:name (:try-semaphore :trivial-success))
386 (let ((sem (make-semaphore :count 1)))
387 (assert (try-semaphore sem))
388 (assert (zerop (semaphore-count sem)))))
390 (with-test (:name (:try-semaphore :trivial-fail :n>1))
391 (assert (eq (try-semaphore (make-semaphore :count 1) 2) 'nil)))
393 (with-test (:name (:try-semaphore :trivial-success :n>1))
394 (let ((sem (make-semaphore :count 10)))
395 (assert (try-semaphore sem 5))
396 (assert (try-semaphore sem 5))
397 (assert (zerop (semaphore-count sem)))))
399 (with-test (:name (:try-semaphore :emulate-wait-on-semaphore))
400 (flet ((busy-wait-on-semaphore (sem)
401 (loop until (try-semaphore sem) do (sleep 0.001))))
402 (test-semaphore-multiple-signals #'busy-wait-on-semaphore)))
404 ;;; Here we test that interrupting TRY-SEMAPHORE does not leave a
405 ;;; semaphore in a bad state.
406 (with-test (:name (:try-semaphore :interrupt-safe))
407 (flet ((make-threads (count fn)
408 (loop repeat count collect (make-thread fn)))
409 (kill-thread (thread)
410 (when (thread-alive-p thread)
411 (ignore-errors (terminate-thread thread))))
412 (count-live-threads (threads)
413 (count-if #'thread-alive-p threads)))
414 ;; WAITERS will already be waiting on the semaphore while
415 ;; threads-being-interrupted will perform TRY-SEMAPHORE on that
416 ;; semaphore, and MORE-WAITERS are new threads trying to wait on
417 ;; the semaphore during the interruption-fire.
418 (let* ((sem (make-semaphore :count 100))
419 (waiters (make-threads 20 #'(lambda ()
420 (wait-on-semaphore sem))))
421 (triers (make-threads 40 #'(lambda ()
422 (sleep (random 0.01))
423 (try-semaphore sem (1+ (random 5))))))
426 do (kill-thread (nth (random 40) triers))
427 collect (make-thread #'(lambda () (wait-on-semaphore sem)))
428 do (kill-thread (nth (random 40) triers)))))
430 ;; Now ensure that the waiting threads will all be waked up,
431 ;; i.e. that the semaphore is still working.
432 (loop repeat (+ (count-live-threads waiters)
433 (count-live-threads more-waiters))
434 do (signal-semaphore sem))
436 (assert (zerop (count-live-threads triers)))
437 (assert (zerop (count-live-threads waiters)))
438 (assert (zerop (count-live-threads more-waiters))))))
442 (format t "~&semaphore tests done~%")
444 (defun test-interrupt (function-to-interrupt &optional quit-p)
445 (let ((child (make-thread function-to-interrupt)))
446 ;;(format t "gdb ./src/runtime/sbcl ~A~%attach ~A~%" child child)
448 (format t "interrupting child ~A~%" child)
449 (interrupt-thread child
451 (format t "child pid ~A~%" *current-thread*)
452 (when quit-p (sb-ext:quit))))
456 ;; separate tests for (a) interrupting Lisp code, (b) C code, (c) a syscall,
457 ;; (d) waiting on a lock, (e) some code which we hope is likely to be
460 (let ((child (test-interrupt (lambda () (loop))))) (terminate-thread child))
462 (test-interrupt #'loop-forever :quit)
464 (let ((child (test-interrupt (lambda () (loop (sleep 2000))))))
465 (terminate-thread child)
466 (wait-for-threads (list child)))
468 (let ((lock (make-mutex :name "loctite"))
471 (setf child (test-interrupt
474 (assert (eql (mutex-value lock) *current-thread*)))
475 (assert (not (eql (mutex-value lock) *current-thread*)))
477 ;;hold onto lock for long enough that child can't get it immediately
479 (interrupt-thread child (lambda () (format t "l ~A~%" (mutex-value lock))))
480 (format t "parent releasing lock~%"))
481 (terminate-thread child)
482 (wait-for-threads (list child)))
484 (format t "~&locking test done~%")
486 (defun alloc-stuff () (copy-list '(1 2 3 4 5)))
489 (let ((thread (sb-thread:make-thread (lambda () (loop (alloc-stuff))))))
491 (loop repeat 4 collect
492 (sb-thread:make-thread
495 (sleep (random 0.1d0))
498 (sb-thread:interrupt-thread thread (lambda ()))))))))
499 (wait-for-threads killers)
500 (sb-thread:terminate-thread thread)
501 (wait-for-threads (list thread))))
504 (format t "~&multi interrupt test done~%")
506 (let ((c (make-thread (lambda () (loop (alloc-stuff))))))
507 ;; NB this only works on x86: other ports don't have a symbol for
508 ;; pseudo-atomic atomicity
510 (sleep (random 0.1d0))
513 (princ ".") (force-output)
514 (assert (thread-alive-p *current-thread*))
516 (not (logbitp 0 SB-KERNEL:*PSEUDO-ATOMIC-BITS*))))))
518 (wait-for-threads (list c)))
520 (format t "~&interrupt test done~%")
522 (defstruct counter (n 0 :type sb-vm:word))
523 (defvar *interrupt-counter* (make-counter))
525 (declaim (notinline check-interrupt-count))
526 (defun check-interrupt-count (i)
527 (declare (optimize (debug 1) (speed 1)))
528 ;; This used to lose if eflags were not restored after an interrupt.
529 (unless (typep i 'fixnum)
530 (error "!!!!!!!!!!!")))
532 (let ((c (make-thread
534 (handler-bind ((error #'(lambda (cond)
537 most-positive-fixnum))))
538 (loop (check-interrupt-count (counter-n *interrupt-counter*))))))))
539 (let ((func (lambda ()
542 (sb-ext:atomic-incf (counter-n *interrupt-counter*)))))
543 (setf (counter-n *interrupt-counter*) 0)
545 (sleep (random 0.1d0))
546 (interrupt-thread c func))
547 (loop until (= (counter-n *interrupt-counter*) 100) do (sleep 0.1))
549 (wait-for-threads (list c))))
551 (format t "~&interrupt count test done~%")
553 (defvar *runningp* nil)
555 (with-test (:name (:interrupt-thread :no-nesting))
556 (let ((thread (sb-thread:make-thread
560 (declare (special runningp))
562 (sb-thread:interrupt-thread thread
564 (let ((*runningp* t))
567 (sb-thread:interrupt-thread thread
569 (throw 'xxx *runningp*)))
570 (assert (not (sb-thread:join-thread thread)))))
572 (with-test (:name (:interrupt-thread :nesting))
573 (let ((thread (sb-thread:make-thread
577 (declare (special runningp))
579 (sb-thread:interrupt-thread thread
581 (let ((*runningp* t))
582 (sb-sys:with-interrupts
585 (sb-thread:interrupt-thread thread
587 (throw 'xxx *runningp*)))
588 (assert (sb-thread:join-thread thread))))
591 (make-thread (lambda ()
593 (sb-ext:gc) (princ "\\") (force-output))
595 (make-thread (lambda ()
598 (princ "/") (force-output))
601 (when (and a-done b-done) (return))
606 (defun waste (&optional (n 100000))
607 (loop repeat n do (make-string 16384)))
609 (loop for i below 100 do
612 (sb-thread:make-thread
620 (defparameter *aaa* nil)
621 (loop for i below 100 do
624 (sb-thread:make-thread
626 (let ((*aaa* (waste)))
628 (let ((*aaa* (waste)))
632 (format t "~&gc test done~%")
634 ;; this used to deadlock on session-lock
635 (sb-thread:make-thread (lambda () (sb-ext:gc)))
636 ;; expose thread creation races by exiting quickly
637 (sb-thread:make-thread (lambda ()))
639 (defun exercise-syscall (fn reference-errno)
640 (sb-thread:make-thread
644 (let ((errno (sb-unix::get-errno)))
645 (sleep (random 0.1d0))
646 (unless (eql errno reference-errno)
647 (format t "Got errno: ~A (~A) instead of ~A~%"
652 (sb-ext:quit :unix-status 1)))))))
654 ;; (nanosleep -1 0) does not fail on FreeBSD
656 (nanosleep-errno (progn
657 (sb-unix:nanosleep -1 0)
658 (sb-unix::get-errno)))
661 :if-does-not-exist nil)
662 (sb-unix::get-errno)))
666 (exercise-syscall (lambda () (sb-unix:nanosleep -1 0)) nanosleep-errno)
667 (exercise-syscall (lambda () (open "no-such-file"
668 :if-does-not-exist nil))
670 (sb-thread:make-thread (lambda () (loop (sb-ext:gc) (sleep 1)))))))
672 (princ "terminating threads")
673 (dolist (thread threads)
674 (sb-thread:terminate-thread thread)))
676 (format t "~&errno test done~%")
679 (let ((thread (sb-thread:make-thread (lambda () (sleep 0.1)))))
680 (sb-thread:interrupt-thread
683 (assert (find-restart 'sb-thread:terminate-thread))))))
687 (format t "~&thread startup sigmask test done~%")
689 ;; FIXME: What is this supposed to test?
690 (sb-debug::enable-debugger)
691 (let* ((main-thread *current-thread*)
693 (make-thread (lambda ()
695 (interrupt-thread main-thread
700 (interrupt-thread main-thread #'continue))
701 :name "interruptor")))
702 (with-session-lock (*session*)
704 (loop while (thread-alive-p interruptor-thread)))
706 (format t "~&session lock test done~%")
710 (loop for i below 100 collect
711 (sb-thread:make-thread (lambda ())))))
713 (format t "~&creation test done~%")
715 ;; interrupt handlers are per-thread with pthreads, make sure the
716 ;; handler installed in one thread is global
717 (sb-thread:make-thread
719 (sb-ext:run-program "sleep" '("1") :search t :wait nil)))
721 ;;;; Binding stack safety
723 (defparameter *x* nil)
724 (defparameter *n-gcs-requested* 0)
725 (defparameter *n-gcs-done* 0)
728 (defun make-something-big ()
729 (let ((x (make-string 32000)))
731 (let ((counter counter))
732 (sb-ext:finalize x (lambda () (format t " ~S" counter)
735 (defmacro wait-for-gc ()
737 (incf *n-gcs-requested*)
738 (loop while (< *n-gcs-done* *n-gcs-requested*))))
741 (loop until (< *n-gcs-done* *n-gcs-requested*))
747 (defun exercise-binding ()
749 (let ((*x* (make-something-big)))
751 ;; at this point the binding stack looks like this:
752 ;; NO-TLS-VALUE-MARKER, *x*, SOMETHING, *x*
755 ;; sig_stop_for_gc_handler binds FREE_INTERRUPT_CONTEXT_INDEX. By
756 ;; now SOMETHING is gc'ed and the binding stack looks like this: 0,
757 ;; 0, SOMETHING, 0 (because the symbol slots are zeroed on
758 ;; unbinding but values are not).
760 ;; bump bsp as if a BIND had just started
761 (incf sb-vm::*binding-stack-pointer* 2)
763 (decf sb-vm::*binding-stack-pointer* 2))))
765 (with-test (:name (:binding-stack-gc-safety))
769 (push (sb-thread:make-thread #'exercise-binding) threads)
770 (push (sb-thread:make-thread (lambda ()
776 (mapc #'sb-thread:terminate-thread threads))))
778 (format t "~&binding test done~%")
782 (defvar *errors* nil)
786 (format t "~&oops: ~A in ~S~%" e *current-thread*)
790 (with-test (:name (:unsynchronized-hash-table))
791 ;; We expect a (probable) error here: parellel readers and writers
792 ;; on a hash-table are not expected to work -- but we also don't
793 ;; expect this to corrupt the image.
794 (let* ((hash (make-hash-table))
796 (threads (list (sb-thread:make-thread
799 (handler-bind ((serious-condition 'oops))
801 ;;(princ "1") (force-output)
802 (setf (gethash (random 100) hash) 'h)))))
804 (sb-thread:make-thread
807 (handler-bind ((serious-condition 'oops))
809 ;;(princ "2") (force-output)
810 (remhash (random 100) hash)))))
812 (sb-thread:make-thread
815 (handler-bind ((serious-condition 'oops))
818 (sb-ext:gc :full t)))))
819 :name "collector"))))
822 (mapc #'sb-thread:terminate-thread threads))))
824 (format t "~&unsynchronized hash table test done~%")
826 (with-test (:name (:synchronized-hash-table))
827 (let* ((hash (make-hash-table :synchronized t))
829 (threads (list (sb-thread:make-thread
832 (handler-bind ((serious-condition 'oops))
834 ;;(princ "1") (force-output)
835 (setf (gethash (random 100) hash) 'h)))))
837 (sb-thread:make-thread
840 (handler-bind ((serious-condition 'oops))
842 ;;(princ "2") (force-output)
843 (remhash (random 100) hash)))))
845 (sb-thread:make-thread
848 (handler-bind ((serious-condition 'oops))
851 (sb-ext:gc :full t)))))
852 :name "collector"))))
855 (mapc #'sb-thread:terminate-thread threads))
856 (assert (not *errors*))))
858 (format t "~&synchronized hash table test done~%")
860 (with-test (:name (:hash-table-parallel-readers))
861 (let ((hash (make-hash-table))
864 do (setf (gethash (random 100) hash) 'xxx))
865 (let ((threads (list (sb-thread:make-thread
868 (handler-bind ((serious-condition 'oops))
870 until (eq t (gethash (random 100) hash))))))
872 (sb-thread:make-thread
875 (handler-bind ((serious-condition 'oops))
877 until (eq t (gethash (random 100) hash))))))
879 (sb-thread:make-thread
882 (handler-bind ((serious-condition 'oops))
884 until (eq t (gethash (random 100) hash))))))
886 (sb-thread:make-thread
889 (handler-bind ((serious-condition 'oops))
892 (sb-ext:gc :full t)))))
893 :name "collector"))))
896 (mapc #'sb-thread:terminate-thread threads))
897 (assert (not *errors*)))))
899 (format t "~&multiple reader hash table test done~%")
901 (with-test (:name (:hash-table-single-accessor-parallel-gc))
902 (let ((hash (make-hash-table))
904 (let ((threads (list (sb-thread:make-thread
906 (handler-bind ((serious-condition 'oops))
908 (let ((n (random 100)))
911 (setf (gethash n hash) 'h))))))
913 (sb-thread:make-thread
915 (handler-bind ((serious-condition 'oops))
918 (sb-ext:gc :full t))))
919 :name "collector"))))
922 (mapc #'sb-thread:terminate-thread threads))
923 (assert (not *errors*)))))
925 (format t "~&single accessor hash table test~%")
927 #| ;; a cll post from eric marsden
929 | (setq *debugger-hook*
930 | (lambda (condition old-debugger-hook)
931 | (debug:backtrace 10)
932 | (unix:unix-exit 2)))
934 | (mp::start-sigalrm-yield)
935 | (flet ((roomy () (loop (with-output-to-string (*standard-output*) (room)))))
936 | (mp:make-process #'roomy)
937 | (mp:make-process #'roomy)))
940 ;;; KLUDGE: No deadlines while waiting on lutex-based condition variables. This test
943 (with-test (:name (:condition-variable :wait-multiple))
945 (let ((waitqueue (sb-thread:make-waitqueue :name "Q"))
946 (mutex (sb-thread:make-mutex :name "M"))
950 (let ((threads (loop repeat 200
952 (sb-thread:make-thread
955 (sb-sys:with-deadline (:seconds 0.01)
956 (sb-thread:with-mutex (mutex)
957 (sb-thread:condition-wait waitqueue
960 (sb-sys:deadline-timeout (c)
961 (declare (ignore c)))))))))
962 (mapc #'sb-thread:join-thread threads)
963 (assert (not failedp))))))
965 (with-test (:name (:condition-variable :notify-multiple))
966 (flet ((tester (notify-fun)
967 (let ((queue (make-waitqueue :name "queue"))
968 (lock (make-mutex :name "lock"))
973 (format t "condition-wait ~a~%" x)
975 (condition-wait queue lock)
976 (format t "woke up ~a~%" x)
979 (let ((threads (loop for x from 1 to 10
982 (sb-thread:make-thread (lambda ()
986 (funcall notify-fun queue))
988 (mapcar #'terminate-thread threads)
989 ;; Check that all threads woke up at least once
990 (assert (= (length (remove-duplicates data)) 10)))))))
991 (tester (lambda (queue)
992 (format t "~&(condition-notify queue 10)~%")
994 (condition-notify queue 10)))
995 (tester (lambda (queue)
996 (format t "~&(condition-broadcast queue)~%")
998 (condition-broadcast queue)))))
1000 (format t "waitqueue wakeup tests done~%")
1002 ;;; Make sure that a deadline handler is not invoked twice in a row in
1003 ;;; CONDITION-WAIT. See LP #512914 for a detailed explanation.
1005 #-sb-lutex ; See KLUDGE above: no deadlines for condition-wait+lutexes.
1006 (with-test (:name (:condition-wait :deadlines :LP-512914))
1007 (let ((n 2) ; was empirically enough to trigger the bug
1008 (mutex (sb-thread:make-mutex))
1009 (waitq (sb-thread:make-waitqueue))
1011 (deadline-handler-run-twice? nil))
1014 (sb-thread:make-thread
1017 ((sb-sys:deadline-timeout
1018 (let ((already? nil))
1021 (setq deadline-handler-run-twice? t))
1024 (sb-thread:condition-broadcast waitq)
1025 (sb-sys:defer-deadline 10.0 c)))))
1026 (sb-sys:with-deadline (:seconds 0.1)
1027 (sb-thread:with-mutex (mutex)
1028 (sb-thread:condition-wait waitq mutex))))))))
1029 (push child threads)))
1030 (mapc #'sb-thread:join-thread threads)
1031 (assert (not deadline-handler-run-twice?))))
1033 (with-test (:name (:condition-wait :signal-deadline-with-interrupts-enabled))
1034 (let ((mutex (sb-thread:make-mutex))
1035 (waitq (sb-thread:make-waitqueue))
1038 (A-interrupts-enabled? :unknown)
1039 (B-interrupts-enabled? :unknown)
1042 ;; W.L.O.G., we assume that A is executed first...
1043 (setq A (sb-thread:make-thread
1046 ((sb-sys:deadline-timeout
1048 ;; We came here through the call to DECODE-TIMEOUT
1049 ;; in CONDITION-WAIT; hence both here are supposed
1050 ;; to evaluate to T.
1051 (setq A-holds? (sb-thread:holding-mutex-p mutex))
1052 (setq A-interrupts-enabled?
1053 sb-sys:*interrupts-enabled*)
1055 (sb-thread:condition-broadcast waitq)
1056 (sb-sys:defer-deadline 10.0 c))))
1057 (sb-sys:with-deadline (:seconds 0.1)
1058 (sb-thread:with-mutex (mutex)
1059 (sb-thread:condition-wait waitq mutex)))))))
1060 (setq B (sb-thread:make-thread
1064 ((sb-sys:deadline-timeout
1066 ;; We came here through the call to GET-MUTEX
1067 ;; in CONDITION-WAIT (contended case of
1068 ;; reaquiring the mutex) - so the former will
1069 ;; be NIL, but interrupts should still be enabled.
1070 (setq B-holds? (sb-thread:holding-mutex-p mutex))
1071 (setq B-interrupts-enabled?
1072 sb-sys:*interrupts-enabled*)
1074 (sb-thread:condition-broadcast waitq)
1075 (sb-sys:defer-deadline 10.0 c))))
1076 (sb-sys:with-deadline (:seconds 0.1)
1077 (sb-thread:with-mutex (mutex)
1078 (sb-thread:condition-wait waitq mutex)))))))
1079 (sb-thread:join-thread A)
1080 (sb-thread:join-thread B)
1081 (let ((A-result (list A-holds? A-interrupts-enabled?))
1082 (B-result (list B-holds? B-interrupts-enabled?)))
1083 ;; We also check some subtle behaviour w.r.t. whether a deadline
1084 ;; handler in CONDITION-WAIT got the mutex, or not. This is most
1085 ;; probably very internal behaviour (so user should not depend
1086 ;; on it) -- I added the testing here just to manifest current
1088 (cond ((equal A-result '(t t)) (assert (equal B-result '(nil t))))
1089 ((equal B-result '(t t)) (assert (equal A-result '(nil t))))
1090 (t (error "Failure: fall through."))))))
1092 (with-test (:name (:mutex :finalization))
1095 (setf a (make-mutex)))))
1097 (format t "mutex finalization test done~%")
1099 ;;; Check that INFO is thread-safe, at least when we're just doing reads.
1101 (let* ((symbols (loop repeat 10000 collect (gensym)))
1102 (functions (loop for (symbol . rest) on symbols
1103 for next = (car rest)
1104 for fun = (let ((next next))
1107 (funcall next (1- n))
1109 do (setf (symbol-function symbol) fun)
1111 (defun infodb-test ()
1112 (funcall (car functions) 9999)))
1114 (with-test (:name (:infodb :read))
1116 (threads (loop for i from 0 to 10
1117 collect (sb-thread:make-thread
1122 (let ((n (infodb-test)))
1125 (format t "N != 0 (~A)~%" n)
1126 (sb-ext:quit)))))))))
1127 (wait-for-threads threads)
1130 (format t "infodb test done~%")
1132 (with-test (:name (:backtrace))
1133 ;; Printing backtraces from several threads at once used to hang the
1134 ;; whole SBCL process (discovered by accident due to a timer.impure
1135 ;; test misbehaving). The cause was that packages weren't even
1136 ;; thread-safe for only doing FIND-SYMBOL, and while printing
1137 ;; backtraces a loot of symbol lookups need to be done due to
1139 (let* ((threads (loop repeat 10
1140 collect (sb-thread:make-thread
1143 (with-output-to-string (*debug-io*)
1144 (sb-debug::backtrace 10))))))))
1145 (wait-for-threads threads)))
1147 (format t "backtrace test done~%")
1149 (format t "~&starting gc deadlock test: WARNING: THIS TEST WILL HANG ON FAILURE!~%")
1151 (with-test (:name (:gc-deadlock))
1152 ;; Prior to 0.9.16.46 thread exit potentially deadlocked the
1153 ;; GC due to *all-threads-lock* and session lock. On earlier
1154 ;; versions and at least on one specific box this test is good enough
1155 ;; to catch that typically well before the 1500th iteration.
1162 (when (zerop (mod i 100))
1167 (sb-thread:make-thread
1169 (sleep (random 0.001)))
1170 :name (list :sleep i))
1171 (sb-thread:make-thread
1173 ;; KLUDGE: what we are doing here is explicit,
1174 ;; but the same can happen because of a regular
1175 ;; MAKE-THREAD or LIST-ALL-THREADS, and various
1176 ;; session functions.
1177 (sb-thread::with-all-threads-lock
1178 (sb-thread::with-session-lock (sb-thread::*session*)
1180 :name (list :gc i)))
1182 (format t "~%error creating thread ~D: ~A -- backing off for retry~%" i e)
1186 (format t "~&gc deadlock test done~%")
1188 (let ((count (make-array 8 :initial-element 0)))
1189 (defun closure-one ()
1190 (declare (optimize safety))
1191 (values (incf (aref count 0)) (incf (aref count 1))
1192 (incf (aref count 2)) (incf (aref count 3))
1193 (incf (aref count 4)) (incf (aref count 5))
1194 (incf (aref count 6)) (incf (aref count 7))))
1195 (defun no-optimizing-away-closure-one ()
1196 (setf count (make-array 8 :initial-element 0))))
1201 (let ((one (make-box))
1204 (defun closure-two ()
1205 (declare (optimize safety))
1206 (values (incf (box-count one)) (incf (box-count two)) (incf (box-count three))))
1207 (defun no-optimizing-away-closure-two ()
1208 (setf one (make-box)
1212 (with-test (:name (:funcallable-instances))
1213 ;; the funcallable-instance implementation used not to be threadsafe
1214 ;; against setting the funcallable-instance function to a closure
1215 ;; (because the code and lexenv were set separately).
1216 (let ((fun (sb-kernel:%make-funcallable-instance 0))
1218 (setf (sb-kernel:funcallable-instance-fun fun) #'closure-one)
1220 (loop (setf (sb-kernel:funcallable-instance-fun fun) #'closure-one)
1221 (setf (sb-kernel:funcallable-instance-fun fun) #'closure-two)))
1223 (handler-case (loop (funcall fun))
1224 (serious-condition (c) (setf condition c)))))
1225 (let ((changer (make-thread #'changer))
1226 (test (make-thread #'test)))
1229 ;; The two closures above are fairly carefully crafted
1230 ;; so that if given the wrong lexenv they will tend to
1231 ;; do some serious damage, but it is of course difficult
1232 ;; to predict where the various bits and pieces will be
1233 ;; allocated. Five seconds failed fairly reliably on
1234 ;; both my x86 and x86-64 systems. -- CSR, 2006-09-27.
1235 (sb-ext:with-timeout 5
1236 (wait-for-threads (list test)))
1237 (error "~@<test thread got condition:~2I~_~A~@:>" condition))
1239 (terminate-thread changer)
1240 (terminate-thread test)
1241 (wait-for-threads (list changer test))))))))
1243 (format t "~&funcallable-instance test done~%")
1245 (defun random-type (n)
1246 `(integer ,(random n) ,(+ n (random n))))
1248 (defun subtypep-hash-cache-test ()
1250 (let ((type1 (random-type 500))
1251 (type2 (random-type 500)))
1252 (let ((a (subtypep type1 type2)))
1254 (assert (eq (subtypep type1 type2) a))))))
1258 (with-test (:name '(:hash-cache :subtypep))
1260 (sb-thread:make-thread #'subtypep-hash-cache-test)))
1261 (format t "hash-cache tests done~%")
1263 ;;;; BLACK BOX TESTS
1265 (in-package :cl-user)
1266 (use-package :test-util)
1267 (use-package "ASSERTOID")
1269 (format t "parallel defclass test -- WARNING, WILL HANG ON FAILURE!~%")
1270 (with-test (:name :parallel-defclass)
1271 (defclass test-1 () ((a :initform :orig-a)))
1272 (defclass test-2 () ((b :initform :orig-b)))
1273 (defclass test-3 (test-1 test-2) ((c :initform :orig-c)))
1275 (d1 (sb-thread:make-thread (lambda ()
1277 do (defclass test-1 () ((a :initform :new-a)))
1281 (d2 (sb-thread:make-thread (lambda ()
1283 do (defclass test-2 () ((b :initform :new-b)))
1287 (d3 (sb-thread:make-thread (lambda ()
1289 do (defclass test-3 (test-1 test-2) ((c :initform :new-c)))
1293 (i (sb-thread:make-thread (lambda ()
1295 do (let ((i (make-instance 'test-3)))
1296 (assert (member (slot-value i 'a) '(:orig-a :new-a)))
1297 (assert (member (slot-value i 'b) '(:orig-b :new-b)))
1298 (assert (member (slot-value i 'c) '(:orig-c :new-c))))
1302 (format t "~%sleeping!~%")
1304 (format t "~%stopping!~%")
1307 (sb-thread:join-thread th)
1308 (format t "~%joined ~S~%" (sb-thread:thread-name th)))
1309 (list d1 d2 d3 i))))
1310 (format t "parallel defclass test done~%")