tests/ctor.impure.lisp

   1 ;;;; gray-box testing of the constructor optimization machinery
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   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
   8 ;;;; from CMU CL.
   9 ;;;;
  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.
  13
  14 (load "test-util.lisp")
  15 (load "compiler-test-util.lisp")
  16
  17 (defpackage "CTOR-TEST"
  18   (:use "CL" "TEST-UTIL" "COMPILER-TEST-UTIL"))
  19
  20 (in-package "CTOR-TEST")
  21 \f
  22 (defclass no-slots () ())
  23
  24 (defun make-no-slots ()
  25   (make-instance 'no-slots))
  26 (compile 'make-no-slots)
  27
  28 (defmethod update-instance-for-redefined-class
  29     ((object no-slots) added discarded plist &rest initargs)
  30   (declare (ignore initargs))
  31   (error "Called U-I-F-R-C on ~A" object))
  32
  33 (assert (typep (make-no-slots) 'no-slots))
  34
  35 (make-instances-obsolete 'no-slots)
  36
  37 (assert (typep (make-no-slots) 'no-slots))
  38 (assert (typep (funcall #'(sb-pcl::ctor no-slots nil)) 'no-slots))
  39 \f
  40 (defclass one-slot ()
  41   ((a :initarg :a)))
  42
  43 (defun make-one-slot-a (a)
  44   (make-instance 'one-slot :a a))
  45 (compile 'make-one-slot-a)
  46 (defun make-one-slot-noa ()
  47   (make-instance 'one-slot))
  48 (compile 'make-one-slot-noa)
  49
  50 (defmethod update-instance-for-redefined-class
  51     ((object one-slot) added discarded plist &rest initargs)
  52   (declare (ignore initargs))
  53   (error "Called U-I-F-R-C on ~A" object))
  54
  55 (assert (= (slot-value (make-one-slot-a 3) 'a) 3))
  56 (assert (not (slot-boundp (make-one-slot-noa) 'a)))
  57
  58 (make-instances-obsolete 'one-slot)
  59
  60 (assert (= (slot-value (make-one-slot-a 3) 'a) 3))
  61 (assert (= (slot-value (funcall #'(sb-pcl::ctor one-slot nil :a sb-pcl::\.p0.) 4) 'a) 4))
  62 (assert (not (slot-boundp (make-one-slot-noa) 'a)))
  63 (assert (not (slot-boundp (funcall #'(sb-pcl::ctor one-slot nil)) 'a)))
  64 \f
  65 (defclass one-slot-superclass ()
  66   ((b :initarg :b)))
  67 (defclass one-slot-subclass (one-slot-superclass)
  68   ())
  69
  70 (defun make-one-slot-subclass (b)
  71   (make-instance 'one-slot-subclass :b b))
  72 (compile 'make-one-slot-subclass)
  73
  74 (defmethod update-instance-for-redefined-class
  75     ((object one-slot-superclass) added discarded plist &rest initargs)
  76   (declare (ignore initargs))
  77   (error "Called U-I-F-R-C on ~A" object))
  78
  79 (assert (= (slot-value (make-one-slot-subclass 2) 'b) 2))
  80
  81 (make-instances-obsolete 'one-slot-subclass)
  82
  83 (assert (= (slot-value (make-one-slot-subclass 2) 'b) 2))
  84 (assert (= (slot-value (funcall #'(sb-pcl::ctor one-slot-subclass nil :b sb-pcl::\.p0.) 3) 'b) 3))
  85 (make-instances-obsolete 'one-slot-superclass)
  86
  87 (assert (= (slot-value (make-one-slot-subclass 2) 'b) 2))
  88 (assert (= (slot-value (funcall #'(sb-pcl::ctor one-slot-subclass nil :b sb-pcl::\.p0.) 4) 'b) 4))
  89
  90 ;;; Tests for CTOR optimization of non-constant class args and constant class object args
  91 (defun find-ctor-caches (fun)
  92   (remove-if-not (lambda (value)
  93                    (and (consp value) (eq 'sb-pcl::ctor-cache (car value))))
  94                  (find-value-cell-values fun)))
  95
  96 (let* ((cmacro (compiler-macro-function 'make-instance))
  97         (opt 0)
  98         (wrapper (lambda (form env)
  99                    (let ((res (funcall cmacro form env)))
 100                      (unless (eq form res)
 101                        (incf opt))
 102                      res))))
 103    (sb-ext:without-package-locks
 104      (unwind-protect
 105           (progn
 106             (setf (compiler-macro-function 'make-instance) wrapper)
 107             (with-test (:name (make-instance :non-constant-class))
 108               (assert (= 0 opt))
 109               (let ((f (compile nil `(lambda (class)
 110                                        (make-instance class :b t)))))
 111                 (assert (= 1 (length (find-ctor-caches f))))
 112                 (assert (= 1 opt))
 113                 (assert (typep (funcall f 'one-slot-subclass) 'one-slot-subclass))))
 114             (with-test (:name (make-instance :constant-class-object))
 115               (let ((f (compile nil `(lambda ()
 116                                        (make-instance ,(find-class 'one-slot-subclass) :b t)))))
 117                 (assert (not (find-ctor-caches f)))
 118                 (assert (= 2 opt))
 119                 (assert (typep (funcall f) 'one-slot-subclass))))
 120             (with-test (:name (make-instance :constant-non-std-class-object))
 121               (let ((f (compile nil `(lambda ()
 122                                        (make-instance ,(find-class 'structure-object))))))
 123                 (assert (not (find-ctor-caches f)))
 124                 (assert (= 3 opt))
 125                 (assert (typep (funcall f) 'structure-object))))
 126             (with-test (:name (make-instance :constant-non-std-class-name))
 127               (let ((f (compile nil `(lambda ()
 128                                        (make-instance 'structure-object)))))
 129                 (assert (not (find-ctor-caches f)))
 130                 (assert (= 4 opt))
 131                 (assert (typep (funcall f) 'structure-object)))))
 132        (setf (compiler-macro-function 'make-instance) cmacro))))
 133
 134 (with-test (:name (make-instance :ctor-inline-cache-resize))
 135   (let* ((f (compile nil `(lambda (name) (make-instance name))))
 136          (classes (loop repeat (* 2 sb-pcl::+ctor-table-max-size+)
 137                         collect (class-name (eval `(defclass ,(gentemp) () ())))))
 138          (count 0)
 139          (caches (find-ctor-caches f))
 140          (cache (pop caches)))
 141     (assert cache)
 142     (assert (not caches))
 143     (assert (not (cdr cache)))
 144     (dolist (class classes)
 145       (assert (typep (funcall f (if (oddp count) class (find-class class))) class))
 146       (incf count)
 147       (cond ((<= count sb-pcl::+ctor-list-max-size+)
 148              (unless (consp (cdr cache))
 149                (error "oops, wanted list cache, got: ~S" cache))
 150              (unless (= count (length (cdr cache)))
 151                (error "oops, wanted ~S elts in cache, got: ~S" count cache)))
 152             (t
 153              (assert (simple-vector-p (cdr cache))))))
 154     (dolist (class classes)
 155       (assert (typep (funcall f (if (oddp count) class (find-class class))) class))
 156       (incf count))))
 157
 158 ;;; Make sure we get default initargs right with on the FAST-MAKE-INSTANCE path CTORs
 159 (defclass some-class ()
 160   ((aroundp :initform nil :reader aroundp))
 161   (:default-initargs :x :success1))
 162
 163 (defmethod initialize-instance :around ((some-class some-class) &key (x :fail?))
 164   (unless (eq x :success1)
 165     (error "Default initarg lossage"))
 166   (setf (slot-value some-class 'aroundp) t)
 167   (when (next-method-p)
 168     (call-next-method)))
 169
 170 (with-test (:name (make-instance :ctor-default-initargs-1))
 171   (assert (aroundp (eval `(make-instance 'some-class))))
 172   (let ((fun (compile nil `(lambda () (make-instance 'some-class)))))
 173     (assert (aroundp (funcall fun)))
 174     ;; make sure we tested what we think we tested...
 175     (let ((ctors (find-named-callees fun :type 'sb-pcl::ctor)))
 176       (assert ctors)
 177       (assert (not (cdr ctors)))
 178       (assert (find-named-callees (car ctors) :name 'sb-pcl::fast-make-instance)))))
 179
 180 ;;; Make sure we get default initargs right with on the FAST-MAKE-INSTANCE path CTORs
 181 ;;; in more interesting cases as well...
 182 (defparameter *some-counter* 0)
 183 (let* ((x 'success2))
 184   (defclass some-class2 ()
 185     ((aroundp :initform nil :reader aroundp))
 186     (:default-initargs :x (progn (incf *some-counter*) x))))
 187
 188 (defmethod initialize-instance :around ((some-class some-class2) &key (x :fail2?))
 189   (unless (eq x 'success2)
 190     (error "Default initarg lossage"))
 191   (setf (slot-value some-class 'aroundp) t)
 192   (when (next-method-p)
 193     (call-next-method)))
 194
 195 (with-test (:name (make-instance :ctor-default-initargs-2))
 196   (assert (= 0 *some-counter*))
 197   (assert (aroundp (eval `(make-instance 'some-class2))))
 198   (assert (= 1 *some-counter*))
 199   (let ((fun (compile nil `(lambda () (make-instance 'some-class2)))))
 200     (assert (= 1 *some-counter*))
 201     (assert (aroundp (funcall fun)))
 202     (assert (= 2 *some-counter*))
 203     ;; make sure we tested what we think we tested...
 204     (let ((ctors (find-named-callees fun :type 'sb-pcl::ctor)))
 205       (assert ctors)
 206       (assert (not (cdr ctors)))
 207       (assert (find-named-callees (car ctors) :name 'sb-pcl::fast-make-instance)))))
 208
 209 ;;; No compiler notes, please
 210 (locally (declare (optimize safety))
 211   (defclass type-check-thing ()
 212     ((slot :type (integer 0) :initarg :slot))))
 213 (with-test (:name (make-instance :no-compile-note-at-runtime))
 214   (let ((fun (compile nil `(lambda (x)
 215                              (declare (optimize safety))
 216                              (make-instance 'type-check-thing :slot x)))))
 217     (handler-bind ((sb-ext:compiler-note #'error))
 218       (funcall fun 41)
 219       (funcall fun 13))))
 220
 221 ;;; NO-APPLICABLE-METHOD called
 222 (defmethod no-applicable-method ((gf (eql #'make-instance)) &rest args)
 223   (cons :no-applicable-method args))
 224 (with-test (:name :constant-invalid-class-arg)
 225   (assert (equal
 226            '(:no-applicable-method "FOO" :quux 14)
 227            (funcall (compile nil `(lambda (x) (make-instance "FOO" :quux x))) 14)))
 228   (assert (equal
 229            '(:no-applicable-method 'abc zot 1 bar 2)
 230            (funcall (compile nil `(lambda (x y) (make-instance ''abc 'zot x 'bar y)))
 231                     1 2))))
 232 (with-test (:name :variable-invalid-class-arg)
 233   (assert (equal
 234            '(:no-applicable-method "FOO" :quux 14)
 235            (funcall (compile nil `(lambda (c x) (make-instance c :quux x))) "FOO" 14)))
 236   (assert (equal
 237            '(:no-applicable-method 'abc zot 1 bar 2)
 238            (funcall (compile nil `(lambda (c x y) (make-instance c 'zot x 'bar y)))
 239                     ''abc 1 2))))
 240 \f
 241 ;;;; success