X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftarget-defstruct.lisp;h=2f462ef9f89baa3c00f5b87d3e4bd493900fe6d2;hb=f2847d6ed16e60390d000410d36ec7fb2570cdaf;hp=31501ff3a16aac48a9c448d068f600ef699858d5;hpb=0aecc2b20142e08068c3434273500131cb13fe2d;p=sbcl.git

diff --git a/src/code/target-defstruct.lisp b/src/code/target-defstruct.lisp
index 31501ff..2f462ef 100644
--- a/src/code/target-defstruct.lisp
+++ b/src/code/target-defstruct.lisp
@@ -31,6 +31,15 @@
 (defun %instance-set (instance index new-value)
   (setf (%instance-ref instance index) new-value))
 
+(defun %instance-compare-and-swap (instance index old new)
+  #!+(or x86 x86-64)
+  (%instance-compare-and-swap instance index old new)
+  #!-(or x86 x86-64)
+  (let ((n-old (%instance-ref instance index)))
+    (when (eq old n-old)
+      (%instance-set instance index new))
+    n-old))
+
 #!-hppa
 (progn
   (defun %raw-instance-ref/word (instance index)
@@ -71,8 +80,11 @@
   (defun %raw-instance-set/complex-double (instance index new-value)
     (declare (type index index)
              (type (complex double-float) new-value))
-    (%raw-instance-set/complex-double instance index new-value)))
+    (%raw-instance-set/complex-double instance index new-value))
+) ; #!-HPPA
 
+#!+hppa
+(progn
 (defun %raw-ref-single (vec index)
   (declare (type index index))
   (%raw-ref-single vec index))
@@ -124,6 +136,7 @@
 (defun %raw-set-complex-long (vec index val)
   (declare (type index index))
   (%raw-set-complex-long vec index val))
+) ; #!+HPPA
 
 (defun %instance-layout (instance)
   (%instance-layout instance))
@@ -143,37 +156,10 @@
   (%set-funcallable-instance-info fin i new-value))
 
 (defun funcallable-instance-fun (fin)
-  (%funcallable-instance-lexenv fin))
-
-;;; The heart of the magic of funcallable instances ("FINs").  When
-;;; called (as with any other function), we grab the code pointer, and
-;;; call it, leaving the original function object in LEXENV (in case
-;;; it was a closure).  If it is actually a FIN, then we need to do an
-;;; extra indirection with funcallable-instance-lexenv to get at any
-;;; closure environment.  This extra indirection is set up when
-;;; accessing the closure environment of an INSTANCE-LAMBDA. Note that
-;;; the original FIN pointer is lost, so if the called function wants
-;;; to get at the original object to do some slot accesses, it must
-;;; close over the FIN object.
-;;;
-;;; If we set the FIN function to be a FIN, we directly copy across
-;;; both the code pointer and the lexenv, since that code pointer (for
-;;; an instance-lambda) is expecting that lexenv to be accessed.  This
-;;; effectively pre-flattens what would otherwise be a chain of
-;;; indirections.  (That used to happen when PCL dispatch functions
-;;; were byte-compiled; now that the byte compiler is gone, I can't
-;;; think of another example offhand. -- WHN 2001-10-06)
-;;;
-;;; The only loss is that if someone accesses the
-;;; FUNCALLABLE-INSTANCE-FUN, then won't get a FIN back.  This
-;;; probably doesn't matter, since PCL only sets the FIN function.
+  (%funcallable-instance-function fin))
+
 (defun (setf funcallable-instance-fun) (new-value fin)
-  (setf (%funcallable-instance-fun fin)
-        (%closure-fun new-value))
-  (setf (%funcallable-instance-lexenv fin)
-        (if (funcallable-instance-p new-value)
-            (%funcallable-instance-lexenv new-value)
-            new-value)))
+  (setf (%funcallable-instance-function fin) new-value))
 
 ;;; service function for structure constructors
 (defun %make-instance-with-layout (layout)
@@ -443,81 +429,85 @@
 
 ;;; default PRINT-OBJECT method
 
+(defun %print-structure-sans-layout-info (name stream)
+  ;; KLUDGE: during PCL build debugging, we can sometimes
+  ;; attempt to print out a PCL object (with null LAYOUT-INFO).
+  (pprint-logical-block (stream nil :prefix "#<" :suffix ">")
+    (prin1 name stream)
+    (write-char #\space stream)
+    (write-string "(no LAYOUT-INFO)" stream)))
+
+(defun %print-structure-sans-slots (name stream)
+  ;; the structure type doesn't count as a component for *PRINT-LEVEL*
+  ;; processing. We can likewise elide the logical block processing,
+  ;; since all we have to print is the type name. -- CSR, 2004-10-05
+  (write-string "#S(" stream)
+  (prin1 name stream)
+  (write-char #\) stream))
+
 (defun %default-structure-pretty-print (structure stream)
   (let* ((layout (%instance-layout structure))
          (name (classoid-name (layout-classoid layout)))
          (dd (layout-info layout)))
-    ;; KLUDGE: during the build process with SB-SHOW, we can sometimes
-    ;; attempt to print out a PCL object (with null LAYOUT-INFO).
-    #!+sb-show
-    (when (null dd)
-      (pprint-logical-block (stream nil :prefix "#<" :suffix ">")
-        (prin1 name stream)
-        (write-char #\space stream)
-        (write-string "(no LAYOUT-INFO)"))
-      (return-from %default-structure-pretty-print nil))
-    ;; the structure type doesn't count as a component for
-    ;; *PRINT-LEVEL* processing.  We can likewise elide the logical
-    ;; block processing, since all we have to print is the type name.
-    ;; -- CSR, 2004-10-05
-    (when (and dd (null (dd-slots dd)))
-      (write-string "#S(" stream)
-      (prin1 name stream)
-      (write-char #\) stream)
-      (return-from %default-structure-pretty-print nil))
-    (pprint-logical-block (stream nil :prefix "#S(" :suffix ")")
-      (prin1 name stream)
-      (let ((remaining-slots (dd-slots dd)))
-        (when remaining-slots
-          (write-char #\space stream)
-          ;; CMU CL had (PPRINT-INDENT :BLOCK 2 STREAM) here,
-          ;; but I can't see why. -- WHN 20000205
-          (pprint-newline :linear stream)
-          (loop
-           (pprint-pop)
-           (let ((slot (pop remaining-slots)))
-             (write-char #\: stream)
-             (output-symbol-name (symbol-name (dsd-name slot)) stream)
-             (write-char #\space stream)
-             (pprint-newline :miser stream)
-             (output-object (funcall (fdefinition (dsd-accessor-name slot))
-                                     structure)
-                            stream)
-             (when (null remaining-slots)
-               (return))
-             (write-char #\space stream)
-             (pprint-newline :linear stream))))))))
+    (cond ((not dd)
+           (%print-structure-sans-layout-info name stream))
+          ((not (dd-slots dd))
+           (%print-structure-sans-slots name stream))
+          (t
+           (pprint-logical-block (stream nil :prefix "#S(" :suffix ")")
+             (prin1 name stream)
+             (let ((remaining-slots (dd-slots dd)))
+               (when remaining-slots
+                 (write-char #\space stream)
+                 ;; CMU CL had (PPRINT-INDENT :BLOCK 2 STREAM) here,
+                 ;; but I can't see why. -- WHN 20000205
+                 (pprint-newline :linear stream)
+                 (loop
+                   (pprint-pop)
+                   (let ((slot (pop remaining-slots)))
+                     (write-char #\: stream)
+                     (output-symbol-name (symbol-name (dsd-name slot)) stream)
+                     (write-char #\space stream)
+                     (pprint-newline :miser stream)
+                     (output-object (funcall (fdefinition (dsd-accessor-name slot))
+                                             structure)
+                                    stream)
+                     (when (null remaining-slots)
+                       (return))
+                     (write-char #\space stream)
+                     (pprint-newline :linear stream))))))))))
+
 (defun %default-structure-ugly-print (structure stream)
   (let* ((layout (%instance-layout structure))
          (name (classoid-name (layout-classoid layout)))
          (dd (layout-info layout)))
-    (when (and dd (null (dd-slots dd)))
-      (write-string "#S(" stream)
-      (prin1 name stream)
-      (write-char #\) stream)
-      (return-from %default-structure-ugly-print nil))
-    (descend-into (stream)
-      (write-string "#S(" stream)
-      (prin1 name stream)
-      (do ((index 0 (1+ index))
-           (remaining-slots (dd-slots dd) (cdr remaining-slots)))
-          ((or (null remaining-slots)
-               (and (not *print-readably*)
-                    *print-length*
-                    (>= index *print-length*)))
-           (if (null remaining-slots)
-               (write-string ")" stream)
-               (write-string " ...)" stream)))
-        (declare (type index index))
-        (write-char #\space stream)
-        (write-char #\: stream)
-        (let ((slot (first remaining-slots)))
-          (output-symbol-name (symbol-name (dsd-name slot)) stream)
-          (write-char #\space stream)
-          (output-object
-           (funcall (fdefinition (dsd-accessor-name slot))
-                    structure)
-           stream))))))
+    (cond ((not dd)
+           (%print-structure-sans-layout-info name stream))
+          ((not (dd-slots dd))
+           (%print-structure-sans-slots name stream))
+          (t
+           (descend-into (stream)
+             (write-string "#S(" stream)
+             (prin1 name stream)
+             (do ((index 0 (1+ index))
+                  (remaining-slots (dd-slots dd) (cdr remaining-slots)))
+                 ((or (null remaining-slots)
+                      (and (not *print-readably*)
+                           *print-length*
+                           (>= index *print-length*)))
+                  (if (null remaining-slots)
+                      (write-string ")" stream)
+                      (write-string " ...)" stream)))
+               (declare (type index index))
+               (write-string " :" stream)
+               (let ((slot (first remaining-slots)))
+                 (output-symbol-name (symbol-name (dsd-name slot)) stream)
+                 (write-char #\space stream)
+                 (output-object
+                  (funcall (fdefinition (dsd-accessor-name slot))
+                           structure)
+                  stream))))))))
+
 (defun default-structure-print (structure stream depth)
   (declare (ignore depth))
   (cond ((funcallable-instance-p structure)
@@ -526,6 +516,7 @@
          (%default-structure-pretty-print structure stream))
         (t
          (%default-structure-ugly-print structure stream))))
+
 (def!method print-object ((x structure-object) stream)
   (default-structure-print x stream *current-level-in-print*))
 
@@ -624,5 +615,6 @@
            :datum x
            :expected-type (classoid-name (layout-classoid layout))))
   (values))
+
 
 (/show0 "target-defstruct.lisp end of file")