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|
;;;; miscellaneous tests of thread stuff
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; While most of SBCL is derived from the CMU CL system, the test
;;;; files (like this one) were written from scratch after the fork
;;;; from CMU CL.
;;;
;;;; This software is in the public domain and is provided with
;;;; absoluely no warranty. See the COPYING and CREDITS files for
;;;; more information.
;;;; STRUCTURAL TESTS
(shadowing-import 'assertoid:assert-error)
(use-package "SB-THREAD")
(use-package "SB-SYS")
(setf sb-unix::*on-dangerous-wait* :error)
(with-test (:name (:threads :trivia))
(assert (eq *current-thread*
(find (thread-name *current-thread*) (list-all-threads)
:key #'thread-name :test #'equal)))
(assert (thread-alive-p *current-thread*)))
(with-test (:name (with-mutex :basics))
(let ((mutex (make-mutex)))
(with-mutex (mutex)
mutex)))
(sb-alien:define-alien-routine "check_deferrables_blocked_or_lose"
void
(where sb-alien:unsigned-long))
(sb-alien:define-alien-routine "check_deferrables_unblocked_or_lose"
void
(where sb-alien:unsigned-long))
(with-test (:name (interrupt-thread :basics :no-unwinding))
(let ((a 0))
(interrupt-thread *current-thread* (lambda () (setq a 1)))
(process-all-interrupts)
(assert (eql a 1))))
(with-test (:name (interrupt-thread :deferrables-blocked))
(interrupt-thread *current-thread*
(lambda ()
;; Make sure sb-ext:gc doesn't leave the
;; deferrables unblocked
(sb-ext:gc)
(check-deferrables-blocked-or-lose 0)))
(process-all-interrupts))
(with-test (:name (interrupt-thread :deferrables-unblocked))
(interrupt-thread *current-thread*
(lambda ()
(with-interrupts
(check-deferrables-unblocked-or-lose 0))))
(process-all-interrupts))
(with-test (:name (interrupt-thread :nlx))
(catch 'xxx
(interrupt-thread *current-thread*
(lambda ()
(check-deferrables-blocked-or-lose 0)
(throw 'xxx nil)))
(process-all-interrupts))
(check-deferrables-unblocked-or-lose 0))
#-sb-thread (invoke-restart 'run-tests::skip-file)
;;;; Now the real tests...
(with-test (:name (with-mutex :timeout)
:broken-on :gc-stress)
(let ((m (make-mutex)))
(with-mutex (m)
(assert (null (join-thread (make-thread
(lambda ()
(with-mutex (m :timeout 0.1)
t)))))))
(assert (join-thread (make-thread
(lambda ()
(with-mutex (m :timeout 0.1)
t)))))))
;;; compare-and-swap
(defmacro defincf (name accessor &rest args)
`(defun ,name (x)
(let* ((old (,accessor x ,@args))
(new (1+ old)))
(loop until (eq old (sb-ext:compare-and-swap (,accessor x ,@args) old new))
do (setf old (,accessor x ,@args)
new (1+ old)))
new)))
(defstruct cas-struct (slot 0))
(defincf incf-car car)
(defincf incf-cdr cdr)
(defincf incf-slot cas-struct-slot)
(defincf incf-symbol-value symbol-value)
(defincf incf-svref/1 svref 1)
(defincf incf-svref/0 svref 0)
(macrolet
((def (name init incf op)
`(with-test (:name ,name)
(let* ((n 200000)
(x ,init)
(run (sb-thread:make-semaphore))
(threadcount 10)
(threads
(loop repeat threadcount
collect (make-thread
(lambda ()
(sb-thread:wait-on-semaphore run)
(loop repeat n do (,incf x)))))))
(sb-thread:signal-semaphore run threadcount)
(map nil #'join-thread threads)
(assert (= (,op x) (* threadcount n)))))))
(def (cas car) (cons 0 nil) incf-car car)
(def (cas cdr) (cons nil 0) incf-cdr cdr)
(def (cas :slot) (make-cas-struct) incf-slot cas-struct-slot)
(def (cas :value)
(let ((x '.x.))
(set x 0)
x)
incf-symbol-value
symbol-value)
(def (cas :svref/0) (vector 0 nil) incf-svref/0 (lambda (x) (svref x 0)))
(def (cas :svref/1) (vector nil 0) incf-svref/1 (lambda (x) (svref x 1))))
(with-test (:name (:threads :more-trivia))
(let ((old-threads (list-all-threads))
(thread (make-thread
(lambda ()
;; I honestly have no idea what this is testing.
;; It seems to be nothing more than an implementation change detector test.
(assert (sb-thread::avl-find
(sb-thread::thread-primitive-thread sb-thread:*current-thread*)
sb-thread::*all-threads*))
(sleep 2))))
(new-threads (list-all-threads)))
(assert (thread-alive-p thread))
;; there is no order guarantee
;;(assert (eq thread (first new-threads)))
(assert (= (1+ (length old-threads)) (length new-threads)))
(sleep 3)
(assert (not (thread-alive-p thread)))))
(with-test (:name (join-thread :abort :default))
(let* ((sym (gensym))
(thread (make-thread (lambda () (abort-thread)))))
(assert (equal (multiple-value-list
(join-thread thread :default sym))
(list sym :abort)))))
(with-test (:name (join-thread :abort :error))
(assert-error (join-thread (make-thread (lambda () (abort-thread))))
join-thread-error))
(with-test (:name (join-thread :timeout :default))
(let* ((sym (gensym))
(sem (make-semaphore))
(thread (make-thread (lambda () (wait-on-semaphore sem)))))
(assert (equal (multiple-value-list
(join-thread thread :timeout .001 :default sym))
(list sym :timeout)))
(signal-semaphore sem)
(assert (join-thread thread))))
(with-test (:name (join-thread :timeout :error))
(let* ((sem (make-semaphore))
(thread (make-thread (lambda () (wait-on-semaphore sem)))))
(assert-error (join-thread thread :timeout .001) join-thread-error)
(signal-semaphore sem)
(assert (join-thread thread))))
(with-test (:name (join-thread :multiple-values))
(assert (equal '(1 2 3)
(multiple-value-list
(join-thread (make-thread (lambda () (values 1 2 3))))))))
;; Used to signal a SIMPLE-ERROR about a recursive lock attempt.
(with-test (:name (join-thread :self-join))
(assert-error (join-thread *current-thread*) join-thread-error))
;;; elementary "can we get a lock and release it again"
(with-test (:name (:mutex :basics))
(let ((l (make-mutex :name "foo"))
(p *current-thread*))
(assert (eql (mutex-owner l) nil) nil "1")
(grab-mutex l)
(assert (eql (mutex-owner l) p) nil "3")
(release-mutex l)
(assert (eql (mutex-owner l) nil) nil "5")))
(with-test (:name (with-recursive-lock :basics))
(labels ((ours-p (value)
(eq *current-thread* value)))
(let ((l (make-mutex :name "rec")))
(assert (eql (mutex-owner l) nil) nil "1")
(with-recursive-lock (l)
(assert (ours-p (mutex-owner l)) nil "3")
(with-recursive-lock (l)
(assert (ours-p (mutex-owner l)) nil "4"))
(assert (ours-p (mutex-owner l)) nil "5"))
(assert (eql (mutex-owner l) nil) nil "6"))))
(with-test (:name (with-recursive-lock :wait-p))
(let ((m (make-mutex)))
(with-mutex (m)
(assert (null (join-thread (make-thread
(lambda ()
(with-recursive-lock (m :wait-p nil)
t)))))))
(assert (join-thread (make-thread
(lambda ()
(with-recursive-lock (m :wait-p nil)
t)))))))
(with-test (:name (with-recursive-lock :wait-p :recursive))
(let ((m (make-mutex)))
(assert (join-thread (make-thread
(lambda ()
(with-recursive-lock (m :wait-p nil)
(with-recursive-lock (m :wait-p nil)
t))))))))
(with-test (:name (with-recursive-lock :timeout)
:broken-on :gc-stress)
(let ((m (make-mutex)))
(with-mutex (m)
(assert (null (join-thread (make-thread
(lambda ()
(with-recursive-lock (m :timeout 0.1)
t)))))))
(assert (join-thread (make-thread
(lambda ()
(with-recursive-lock (m :timeout 0.1)
t)))))))
(with-test (:name (with-recursive-lock :timeout :recursive))
(let ((m (make-mutex)))
(assert (join-thread (make-thread
(lambda ()
(with-recursive-lock (m :timeout 0.1)
(with-recursive-lock (m :timeout 0.1)
t))))))))
(with-test (:name (:mutex :nesting-mutex-and-recursive-lock))
(let ((l (make-mutex :name "a mutex")))
(with-mutex (l)
(with-recursive-lock (l)))))
(with-test (:name (condition-wait :basics-1)
:skipped-on :gc-stress)
(let ((queue (make-waitqueue :name "queue"))
(lock (make-mutex :name "lock"))
(n 0))
(labels ((in-new-thread ()
(with-mutex (lock)
(assert (eql (mutex-owner lock) *current-thread*))
(format t "~A got mutex~%" *current-thread*)
;; now drop it and sleep
;; FIXME: condition-wait returning doesn't mean there was condition-notify
(condition-wait queue lock)
;; after waking we should have the lock again
(assert (eql (mutex-owner lock) *current-thread*))
(assert (eql n 1))
(decf n))))
(make-join-thread #'in-new-thread)
(sleep 2) ; give it a chance to start
;; check the lock is free while it's asleep
(format t "parent thread ~A~%" *current-thread*)
(assert (eql (mutex-owner lock) nil))
(with-mutex (lock)
(incf n)
(condition-notify queue))
(sleep 1))))
(with-test (:name (condition-wait :basics-2)
:skipped-on :gc-stress)
(let ((queue (make-waitqueue :name "queue"))
(lock (make-mutex :name "lock")))
(labels ((ours-p (value)
(eq *current-thread* value))
(in-new-thread ()
(with-recursive-lock (lock)
(assert (ours-p (mutex-owner lock)))
(format t "~A got mutex~%" (mutex-owner lock))
;; now drop it and sleep
;; FIXME: condition-wait returning doesn't mean there was condition-notify
(condition-wait queue lock)
;; after waking we should have the lock again
(format t "woken, ~A got mutex~%" (mutex-owner lock))
(assert (ours-p (mutex-owner lock))))))
(make-join-thread #'in-new-thread)
(sleep 2) ; give it a chance to start
;; check the lock is free while it's asleep
(format t "parent thread ~A~%" *current-thread*)
(assert (eql (mutex-owner lock) nil))
(with-recursive-lock (lock)
(condition-notify queue))
(sleep 1))))
;;; GRAB-MUTEX
(with-test (:name (grab-mutex :waitp nil))
(let ((m (make-mutex)))
(with-mutex (m)
(assert (null (join-thread (make-thread
#'(lambda ()
(grab-mutex m :waitp nil)))))))))
(with-test (:name (grab-mutex :timeout :acquisition-fail))
(let ((m (make-mutex))
(w (make-semaphore)))
(with-mutex (m)
(let ((th (make-thread
#'(lambda ()
(prog1
(grab-mutex m :timeout 0.1)
(signal-semaphore w))))))
;; Wait for it to -- otherwise the detect the deadlock chain
;; from JOIN-THREAD.
(wait-on-semaphore w)
(assert (null (join-thread th)))))))
(with-test (:name (grab-mutex :timeout :acquisition-success)
:skipped-on :gc-stress)
(let ((m (make-mutex))
(child))
(with-mutex (m)
(setq child (make-thread #'(lambda () (grab-mutex m :timeout 1.0))))
(sleep 0.2))
(assert (eq (join-thread child) 't))))
(with-test (:name (grab-mutex :timeout+deadline :lp-1727789))
(flet ((test (deadline)
(let ((m (make-mutex))
(w (make-semaphore)))
(with-mutex (m)
(let ((th (make-thread #'(lambda ()
(sb-sys:with-deadline (:seconds 0.0)
(handler-case
(grab-mutex m :timeout deadline)
(sb-sys:deadline-timeout ()
(signal-semaphore w)
:deadline)))))))
(wait-on-semaphore w)
(assert (eq (join-thread th) :deadline)))))))
(test 0.0)
(test 10000000000000000000000)))
(with-test (:name (grab-mutex :waitp+deadline))
(let ((m (make-mutex)))
(with-mutex (m)
(assert (eq (join-thread
(make-thread #'(lambda ()
(sb-sys:with-deadline (:seconds 0.0)
(handler-case
(grab-mutex m :waitp nil)
(sb-sys:deadline-timeout ()
:deadline))))))
'nil)))))
|
