1 ;;;; testing clos cache
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 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
12 ;;;; more information.
14 (defpackage "CLOS-CACHE-TEST"
17 (in-package "CLOS-CACHE-TEST")
19 ;;;; Make a GF, populate it with a ton of methods, and then hammer
20 ;;;; it with multiple threads. On 1.0.6 this would have failed with
21 ;;;; "NIL is not an SB-KERNEL:LAYOUT" pretty quickly.
23 (defgeneric cache-test (x y))
25 (defvar *cache-test-classes* nil)
29 (defmethod cache-test (x y)
31 ,@(loop for i from 0 upto 128
33 (let ((c (intern (format nil "CACHE-TEST-CLASS-~S" i))))
36 (defmethod cache-test ((x ,c) (y ,c))
38 (defmethod cache-test ((x ,c) y)
40 (defmethod cache-test (x (y ,c))
42 (push (find-class ',c) *cache-test-classes*)))))))
45 (defvar *run-cache-test* nil)
47 (let* ((instances (map 'vector #'make-instance *cache-test-classes*))
48 (limit (length instances)))
50 (let* ((r (random limit))
51 (instance (svref instances r)))
54 (assert (equal (cache-test r r) '(t t)))
55 (assert (equal (cache-test r instance) (list t instance))))
57 (assert (equal (cache-test instance r) (list instance t)))
58 (assert (equal (cache-test instance instance) (list instance instance))))))))
60 (let ((lock (sb-thread:make-mutex)))
61 (defun note (control &rest args)
62 (let ((string (apply #'format nil control args)))
63 (sb-thread:with-mutex (lock)
64 (write-line string)))))
67 (note "/~S waiting for permission to run" sb-thread:*current-thread*)
68 (loop until *run-cache-test* do (sb-thread:thread-yield))
69 (note "/~S joining the thundering herd" sb-thread:*current-thread*)
71 (loop repeat 1024 do (test-cache))
73 (note "~&Error in cache test in ~S:~%~A~%...aborting"
74 sb-thread:*current-thread* e)
75 (sb-ext:quit :unix-status 1)))
76 (note "/~S done" sb-thread:*current-thread*))
79 (let ((threads (loop repeat 32
80 collect (sb-thread:make-thread 'test-loop))))
81 (setf *run-cache-test* t)
82 (mapcar #'sb-thread:join-thread threads))
86 (setf *run-cache-test* t)
90 ;;; Check that the test tests what it was supposed to test: the cache.
91 (assert (sb-pcl::cache-p (sb-pcl::gf-dfun-cache #'cache-test)))