0.7.11.10:
[sbcl.git] / src / pcl / dlisp.lisp
index 2639eb6..482256e 100644 (file)
@@ -71,6 +71,7 @@
 
 ;;; --------------------------------
 
+;;; FIXME: What do these variables mean?
 (defvar *precompiling-lap* nil)
 (defvar *emit-function-p* t)
 
         (restl (when applyp '(.lap-rest-arg.))))
     (generating-lisp '(emf)
                     dlap-lambda-list
-      `(invoke-effective-method-function emf ,applyp ,@args ,@restl))))
-
-(defmacro emit-default-only-macro (metatypes applyp)
-  (let ((*emit-function-p* nil)
-       (*precompiling-lap* t))
-    (values
-     (emit-default-only metatypes applyp))))
+                    `(invoke-effective-method-function emf
+                                                       ,applyp
+                                                       ,@args
+                                                       ,@restl))))
 
 ;;; --------------------------------
 
            nil)))
 
 ;;; note on implementation for CMU 17 and later (including SBCL):
-;;; Since std-instance-p is weakened, that branch may run on non-pcl
+;;; Since STD-INSTANCE-P is weakened, that branch may run on non-PCL
 ;;; instances (structures). The result will be the non-wrapper layout
 ;;; for the structure, which will cause a miss. The "slots" will be
 ;;; whatever the first slot is, but will be ignored. Similarly,
-;;; fsc-instance-p returns true on funcallable structures as well as
+;;; FSC-INSTANCE-P returns true on funcallable structures as well as
 ;;; PCL fins.
 (defun emit-reader/writer (reader/writer 1-or-2-class class-slot-p)
   (when (and (null *precompiling-lap*) *emit-function-p*)
   (let ((instance nil)
        (arglist  ())
        (closure-variables ())
-       (field (first-wrapper-cache-number-index))
+       (field +first-wrapper-cache-number-index+)
        (readp (eq reader/writer :reader))
        (read-form (emit-slot-read-form class-slot-p 'index 'slots)))
     ;;we need some field to do the fast obsolete check
     (ecase 1-or-2-class
       (1 (setq closure-variables '(wrapper-0 index miss-fn)))
       (2 (setq closure-variables '(wrapper-0 wrapper-1 index miss-fn))))
-    (generating-lisp closure-variables
-                    arglist
-       `(let* (,@(unless class-slot-p `((slots nil)))
+    (generating-lisp
+     closure-variables
+     arglist
+     `(let* (,@(unless class-slot-p `((slots nil)))
               (wrapper (cond ((std-instance-p ,instance)
                               ,@(unless class-slot-p
-                                  `((setq slots (std-instance-slots ,instance))))
+                                  `((setq slots
+                                          (std-instance-slots ,instance))))
                               (std-instance-wrapper ,instance))
                              ((fsc-instance-p ,instance)
                               ,@(unless class-slot-p
-                                  `((setq slots (fsc-instance-slots ,instance))))
+                                  `((setq slots
+                                          (fsc-instance-slots ,instance))))
                               (fsc-instance-wrapper ,instance)))))
-         (block access
-           (when (and wrapper
-                      (/= (wrapper-cache-number-vector-ref wrapper ,field) 0)
-                      ,@(if (eql 1 1-or-2-class)
-                            `((eq wrapper wrapper-0))
-                            `((or (eq wrapper wrapper-0)
-                                  (eq wrapper wrapper-1)))))
-             ,@(if readp
-                   `((let ((value ,read-form))
-                       (unless (eq value +slot-unbound+)
-                         (return-from access value))))
-                   `((return-from access (setf ,read-form ,(car arglist))))))
-           (funcall miss-fn ,@arglist))))))
+       (block access
+         (when (and wrapper
+                    (/= (wrapper-cache-number-vector-ref wrapper ,field) 0)
+                    ,@(if (eql 1 1-or-2-class)
+                          `((eq wrapper wrapper-0))
+                          `((or (eq wrapper wrapper-0)
+                                (eq wrapper wrapper-1)))))
+           ,@(if readp
+                 `((let ((value ,read-form))
+                     (unless (eq value +slot-unbound+)
+                       (return-from access value))))
+                 `((return-from access (setf ,read-form ,(car arglist))))))
+         (funcall miss-fn ,@arglist))))))
 
 (defun emit-slot-read-form (class-slot-p index slots)
   (if class-slot-p
         (funcall ,miss-fn ,@arglist)
         value)))
 
-(defun emit-slot-access (reader/writer class-slot-p slots index miss-fn arglist)
+(defun emit-slot-access (reader/writer
+                        class-slot-p
+                        slots
+                        index
+                        miss-fn
+                        arglist)
   (let ((read-form (emit-slot-read-form class-slot-p index slots))
         (write-form (emit-slot-write-form
                      class-slot-p index slots (car arglist))))
     (values
      (emit-reader/writer reader/writer 1-or-2-class class-slot-p))))
 
-(defun emit-one-or-n-index-reader/writer (reader/writer cached-index-p class-slot-p)
+(defun emit-one-or-n-index-reader/writer (reader/writer
+                                         cached-index-p
+                                         class-slot-p)
   (when (and (null *precompiling-lap*) *emit-function-p*)
     (return-from emit-one-or-n-index-reader/writer
       (emit-one-or-n-index-reader/writer-function
                         '(standard-instance)))
        (:writer (values (list (dfun-arg-symbol 0) (dfun-arg-symbol 1))
                         '(t standard-instance))))
-    (generating-lisp `(cache ,@(unless cached-index-p '(index)) miss-fn)
-                    arglist
-      `(let (,@(unless class-slot-p '(slots))
-            ,@(when cached-index-p '(index)))
-        ,(emit-dlap arglist metatypes
-                    (emit-slot-access reader/writer class-slot-p
-                                      'slots 'index 'miss-fn arglist)
-                    `(funcall miss-fn ,@arglist)
-                    (when cached-index-p 'index)
-                    (unless class-slot-p '(slots)))))))
+    (generating-lisp
+     `(cache ,@(unless cached-index-p '(index)) miss-fn)
+     arglist
+     `(let (,@(unless class-slot-p '(slots))
+           ,@(when cached-index-p '(index)))
+       ,(emit-dlap arglist metatypes
+                   (emit-slot-access reader/writer class-slot-p
+                                     'slots 'index 'miss-fn arglist)
+                   `(funcall miss-fn ,@arglist)
+                   (when cached-index-p 'index)
+                   (unless class-slot-p '(slots)))))))
 
 (defmacro emit-one-or-n-index-reader/writer-macro
     (reader/writer cached-index-p class-slot-p)
   (let ((*emit-function-p* nil)
        (*precompiling-lap* t))
     (values
-     (emit-one-or-n-index-reader/writer reader/writer cached-index-p class-slot-p))))
+     (emit-one-or-n-index-reader/writer reader/writer
+                                       cached-index-p
+                                       class-slot-p))))
 
 (defun emit-miss (miss-fn args &optional applyp)
   (let ((restl (when applyp '(.lap-rest-arg.))))
   (let* ((dlap-lambda-list (make-dlap-lambda-list metatypes applyp))
         (args (remove '&rest dlap-lambda-list))
         (restl (when applyp '(.lap-rest-arg.))))
-    (generating-lisp `(cache ,@(unless cached-emf-p '(emf)) miss-fn)
-                    dlap-lambda-list
-      `(let (,@(when cached-emf-p '(emf)))
-        ,(emit-dlap args
-                    metatypes
-                    (if return-value-p
-                        (if cached-emf-p 'emf t)
-                        `(invoke-effective-method-function emf ,applyp
-                          ,@args ,@restl))
-                    (emit-miss 'miss-fn args applyp)
-                    (when cached-emf-p 'emf))))))
-
-(defmacro emit-checking-or-caching-macro (cached-emf-p return-value-p metatypes applyp)
+    (generating-lisp
+     `(cache ,@(unless cached-emf-p '(emf)) miss-fn)
+     dlap-lambda-list
+     `(let (,@(when cached-emf-p '(emf)))
+       ,(emit-dlap args
+                   metatypes
+                   (if return-value-p
+                       (if cached-emf-p 'emf t)
+                       `(invoke-effective-method-function
+                         emf ,applyp ,@args ,@restl))
+                   (emit-miss 'miss-fn args applyp)
+                   (when cached-emf-p 'emf))))))
+
+(defmacro emit-checking-or-caching-macro (cached-emf-p
+                                         return-value-p
+                                         metatypes
+                                         applyp)
   (let ((*emit-function-p* nil)
        (*precompiling-lap* t))
     (values
          (return-from dfun ,miss)))))
 
 (defun emit-1-nil-dlap (wrapper miss-label)
-  `(let* ((primary ,(emit-1-wrapper-compute-primary-cache-location wrapper miss-label))
+  `(let* ((primary ,(emit-1-wrapper-compute-primary-cache-location wrapper
+                                                                  miss-label))
          (location primary))
      (declare (fixnum primary location))
      (block search
      (the fixnum lock-count)))
 
 (defun emit-1-t-dlap (wrapper miss-label value)
-  `(let ((primary ,(emit-1-wrapper-compute-primary-cache-location wrapper miss-label))
+  `(let ((primary ,(emit-1-wrapper-compute-primary-cache-location wrapper
+                                                                 miss-label))
         (initial-lock-count (get-cache-vector-lock-count cache-vector)))
      (declare (fixnum primary initial-lock-count))
      (let ((location primary))
 
 (defun emit-greater-than-1-dlap (wrappers miss-label value)
   (declare (type list wrappers))
-  (let ((cache-line-size (compute-line-size (+ (length wrappers) (if value 1 0)))))
-    `(let ((primary 0) (size-1 (the fixnum (- size 1))))
+  (let ((cache-line-size (compute-line-size (+ (length wrappers)
+                                              (if value 1 0)))))
+    `(let ((primary 0)
+          (size-1 (the fixnum (- size 1))))
        (declare (fixnum primary size-1))
        ,(emit-n-wrapper-compute-primary-cache-location wrappers miss-label)
        (let ((initial-lock-count (get-cache-vector-lock-count cache-vector)))
         (declare (fixnum initial-lock-count))
-        (let ((location primary) (next-location 0))
+        (let ((location primary)
+              (next-location 0))
           (declare (fixnum location next-location))
           (block search
             (loop (setq next-location
                                 wrappers))
                     ,@(when value
                         `((setq location (the fixnum (+ location 1)))
-                          (setq ,value (cache-vector-ref cache-vector location))))
+                          (setq ,value (cache-vector-ref cache-vector
+                                                         location))))
                     (return-from search nil))
                   (setq location next-location)
                   (when (= location size-1)
                                       `(the fixnum ,form))))))))
                 wrappers))))
 
-;;; CMU17 (and SBCL) note: Since STD-INSTANCE-P is weakened in the CMU/SBCL
-;;; approach of using funcallable instances, that branch may run
-;;; on non-pcl instances (structures). The result will be the
-;;; non-wrapper layout for the structure, which will cause a miss. The "slots"
-;;; will be whatever the first slot is, but will be ignored. Similarly,
-;;; fsc-instance-p returns true on funcallable structures as well as PCL fins.
+;;; CMU17 (and SBCL) note: Since STD-INSTANCE-P is weakened in the
+;;; CMU/SBCL approach of using funcallable instances, that branch may
+;;; run on non-pcl instances (structures). The result will be the
+;;; non-wrapper layout for the structure, which will cause a miss. The
+;;; "slots" will be whatever the first slot is, but will be ignored.
+;;; Similarly, FSC-INSTANCE-P returns true on funcallable structures
+;;; as well as PCL fins.
 (defun emit-fetch-wrapper (metatype argument miss-label &optional slot)
   (ecase metatype
     ((standard-instance)