1.0.15.3: Have PROBE-FILE return NIL whenever a truename can't be found.

[sbcl.git] / src / pcl / dfun.lisp

diff --git a/src/pcl/dfun.lisp b/src/pcl/dfun.lisp
index 3be7f77..5532c12 100644 (file)
--- a/src/pcl/dfun.lisp
+++ b/src/pcl/dfun.lisp
@@ -1280,8 +1280,8 @@ Except see also BREAK-VICIOUS-METACIRCLE.  -- CSR, 2003-05-28
                       (writer (cadr specializers))))
              (specl-cpl (if early-p
                             (early-class-precedence-list specl)
-                            (and (class-finalized-p specl)
-                                 (class-precedence-list specl))))
+                            (when (class-finalized-p specl)
+                              (class-precedence-list specl))))
              (so-p (member *the-class-standard-object* specl-cpl))
              (slot-name (if (consp method)
                             (and (early-method-standard-accessor-p method)
@@ -1296,17 +1296,14 @@ Except see also BREAK-VICIOUS-METACIRCLE.  -- CSR, 2003-05-28
         ;; all of its subclasses. If either SPECL or one of the subclasses
         ;; is not a standard-class, bail out.
         (labels ((aux (class)
-                   ;; FIND-SLOT-DEFINITION might not be defined yet
-                   (let ((slotd (find-if (lambda (x)
-                                           (eq (sb-pcl::slot-definition-name x)
-                                               slot-name))
-                                         (sb-pcl::class-slots class))))
+                   (let ((slotd (find-slot-definition class slot-name)))
                      (when slotd
-                       (unless (or early-p
-                                   (slot-accessor-std-p slotd type))
+                       (unless (or early-p (slot-accessor-std-p slotd type))
                          (return-from make-accessor-table nil))
                        (push (cons specl slotd) (gethash class table))))
                    (dolist (subclass (sb-pcl::class-direct-subclasses class))
+                     (unless (class-finalized-p subclass)
+                       (return-from make-accessor-table nil))
                      (aux subclass))))
           (aux specl))))
     (maphash (lambda (class specl+slotd-list)
@@ -1643,12 +1640,21 @@ Except see also BREAK-VICIOUS-METACIRCLE.  -- CSR, 2003-05-28
                     root)))
     nil))
 \f
-;;; FIXME: Needs a lock.
+;;; Not synchronized, as all the uses we have for it are multiple ones
+;;; and need WITH-LOCKED-HASH-TABLE in any case.
+;;;
+;;; FIXME: Is it really more efficient to store this stuff in a global
+;;; table instead of having a slot in each method?
+;;;
+;;; FIXME: This table also seems to contain early methods, which should
+;;; presumably be dropped during the bootstrap.
 (defvar *effective-method-cache* (make-hash-table :test 'eq))
 
 (defun flush-effective-method-cache (generic-function)
-  (dolist (method (generic-function-methods generic-function))
-    (remhash method *effective-method-cache*)))
+  (let ((cache *effective-method-cache*))
+    (with-locked-hash-table (cache)
+      (dolist (method (generic-function-methods generic-function))
+        (remhash method cache)))))
 
 (defun get-secondary-dispatch-function (gf methods types
                                         &optional method-alist wrappers)
@@ -1675,9 +1681,10 @@ Except see also BREAK-VICIOUS-METACIRCLE.  -- CSR, 2003-05-28
             (lambda (&rest args)
               (apply #'no-applicable-method gf args))))
       (let* ((key (car methods))
-             (ht-value (or (gethash key *effective-method-cache*)
-                           (setf (gethash key *effective-method-cache*)
-                                 (cons nil nil)))))
+             (ht *effective-method-cache*)
+             (ht-value (with-locked-hash-table (ht)
+                         (or (gethash key ht)
+                             (setf (gethash key ht) (cons nil nil))))))
         (if (and (null (cdr methods)) all-applicable-p ; the most common case
                  (null method-alist-p) wrappers-p (not function-p))
             (or (car ht-value)