1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
#|
Copyright 2006,2007 Greg Pfeil
Distributed under the MIT license (see LICENSE file)
|#
(defpackage bordeaux-threads/test
(:use #:cl #:bordeaux-threads #:fiveam)
(:shadow #:with-timeout))
(in-package #:bordeaux-threads/test)
(def-suite :bordeaux-threads)
(def-fixture using-lock ()
(let ((lock (make-lock)))
(&body)))
(in-suite :bordeaux-threads)
(test should-have-current-thread
(is (current-thread)))
(test current-thread-identity
(let* ((box (list nil))
(thread (make-thread (lambda ()
(setf (car box) (current-thread))))))
(join-thread thread)
(is (eql (car box) thread))))
(test join-thread-return-value
(is (eql 0 (join-thread (make-thread (lambda () 0))))))
(test should-identify-threads-correctly
(is (threadp (current-thread)))
(is (threadp (make-thread (lambda () t) :name "foo")))
(is (not (threadp (make-lock)))))
(test should-retrieve-thread-name
(is (equal "foo" (thread-name (make-thread (lambda () t) :name "foo")))))
(test interrupt-thread
(let* ((box (list nil))
(thread (make-thread (lambda ()
(setf (car box)
(catch 'new-thread
(sleep 60)
'not-interrupted))))))
(sleep 1)
(interrupt-thread thread (lambda ()
(throw 'new-thread 'interrupted)))
(join-thread thread)
(is (eql 'interrupted (car box)))))
(test should-lock-without-contention
(with-fixture using-lock ()
(is (acquire-lock lock t))
(release-lock lock)
(is (acquire-lock lock nil))
(release-lock lock)))
(defun set-equal (set-a set-b)
(and (null (set-difference set-a set-b))
(null (set-difference set-b set-a))))
(test default-special-bindings
(locally (declare (special *a* *c*))
(let* ((the-as 50) (the-bs 150) (*b* 42)
some-a some-b some-other-a some-other-b
(*default-special-bindings*
`((*a* . (funcall ,(lambda () (incf the-as))))
(*b* . (funcall ,(lambda () (incf the-bs))))
,@*default-special-bindings*))
(threads (list (make-thread
(lambda ()
(setf some-a *a* some-b *b*)))
(make-thread
(lambda ()
(setf some-other-a *a*
some-other-b *b*))))))
(declare (special *b*))
(thread-yield)
(is (not (boundp '*a*)))
(loop while (some #'thread-alive-p threads)
do (thread-yield))
(is (set-equal (list some-a some-other-a) '(51 52)))
(is (set-equal (list some-b some-other-b) '(151 152)))
(is (not (boundp '*a*))))))
(defparameter *shared* 0)
(defparameter *lock* (make-lock))
(test should-have-thread-interaction
;; this simple test generates N process. Each process grabs and
;; releases the lock until SHARED has some value, it then
;; increments SHARED. the outer code first sets shared 1 which
;; gets the thing running and then waits for SHARED to reach some
;; value. this should, i think, stress test locks.
(setf *shared* 0)
(flet ((worker (i)
(loop
do (with-lock-held (*lock*)
(when (= i *shared*)
(incf *shared*)
(return)))
(thread-yield)
(sleep 0.001))))
(let* ((procs (loop
for i from 1 upto 2
;; create a new binding to protect against implementations that
;; mutate instead of binding the loop variable
collect (let ((i i))
(make-thread (lambda ()
(funcall #'worker i))
:name (format nil "Proc #~D" i))))))
(with-lock-held (*lock*)
(incf *shared*))
(block test
(loop
until (with-lock-held (*lock*)
(= (1+ (length procs)) *shared*))
do (with-lock-held (*lock*)
(is (>= (1+ (length procs)) *shared*)))
(thread-yield)
(sleep 0.001))))))
(defparameter *condition-variable* (make-condition-variable))
(test condition-variable
(setf *shared* 0)
(flet ((worker (i)
(with-lock-held (*lock*)
(loop
until (= i *shared*)
do (condition-wait *condition-variable* *lock*))
(incf *shared*))
(condition-notify *condition-variable*)))
(let ((num-procs 100))
(dotimes (i num-procs)
;; create a new binding to protect against implementations that
;; mutate instead of binding the loop variable
(let ((i i))
(make-thread (lambda ()
(funcall #'worker i))
:name (format nil "Proc #~D" i))))
(with-lock-held (*lock*)
(loop
until (= num-procs *shared*)
do (condition-wait *condition-variable* *lock*)))
(is (equal num-procs *shared*)))))
;; Generally safe sanity check for the locks and single-notify
#+(and lispworks (not lispworks6))
(test condition-variable-lw
(let ((condition-variable (make-condition-variable :name "Test"))
(test-lock (make-lock))
(completed nil))
(dotimes (id 6)
(let ((id id))
(make-thread (lambda ()
(with-lock-held (test-lock)
(condition-wait condition-variable test-lock)
(push id completed)
(condition-notify condition-variable))))))
(sleep 2)
(if completed
(print "Failed: Premature passage through condition-wait")
(print "Successfully waited on condition"))
(condition-notify condition-variable)
(sleep 2)
(if (and completed
(eql (length completed) 6)
(equal (sort completed #'<)
(loop for id from 0 to 5 collect id)))
(print "Success: All elements notified")
(print (format nil "Failed: Of 6 expected elements, only ~A proceeded" completed)))
(bt::with-cv-access condition-variable
(if (and
(not (or (car wait-tlist) (cdr wait-tlist)))
(zerop (hash-table-count wait-hash))
(zerop (hash-table-count unconsumed-notifications)))
(print "Success: condition variable restored to initial state")
(print "Error: condition variable retains residue from completed waiters")))
(setq completed nil)
(dotimes (id 6)
(let ((id id))
(make-thread (lambda ()
(with-lock-held (test-lock)
(condition-wait condition-variable test-lock)
(push id completed))))))
(sleep 2)
(condition-notify condition-variable)
(sleep 2)
(if (= (length completed) 1)
(print "Success: Notify-single only notified a single waiter to restart")
(format t "Failure: Notify-single restarted ~A items" (length completed)))
(condition-notify condition-variable)
(sleep 2)
(if (= (length completed) 2)
(print "Success: second Notify-single only notified a single waiter to restart")
(format t "Failure: Two Notify-singles restarted ~A items" (length completed)))
(loop for i from 0 to 5 do (condition-notify condition-variable))
(print "Note: In the case of any failures, assume there are outstanding waiting threads")
(values)))
#+(or abcl allegro clisp clozure ecl lispworks6 sbcl scl)
(test condition-wait-timeout
(let ((lock (make-lock))
(cvar (make-condition-variable))
(flag nil))
(make-thread (lambda () (sleep 0.4) (setf flag t)))
(with-lock-held (lock)
(condition-wait cvar lock :timeout 0.2)
(is (null flag))
(sleep 0.4)
(is (eq t flag)))))
|
