X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=src%2Faggregates.lisp;h=5d0059c03dc1f94f9cdab67a97ec18d741351345;hb=c4533c02d3f2ebd53178c93de2dee09ca39fe0e7;hp=6be523ddd2b1760c6aca585b8f3fc44d242aed9c;hpb=6229dcb7d816d344069abee0d103ef09c8e52c0e;p=uffi.git

diff --git a/src/aggregates.lisp b/src/aggregates.lisp
index 6be523d..5d0059c 100644
--- a/src/aggregates.lisp
+++ b/src/aggregates.lisp
@@ -9,11 +9,8 @@
 ;;;;
 ;;;; $Id$
 ;;;;
-;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;; This file, part of UFFI, is Copyright (c) 2005 by Kevin M. Rosenberg
 ;;;;
-;;;; UFFI users are granted the rights to distribute and use this software
-;;;; as governed by the terms of the Lisp Lesser GNU Public License
-;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
 ;;;; *************************************************************************
 
 (in-package #:uffi)
@@ -227,20 +224,29 @@ of the enum-name name, separator-string, and field-name"
       (setf (aref a i) (uffi:deref-array s '(:array :unsigned-byte) i)))))
 
 #+sbcl
-(let ((copy-fn (if (fboundp (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL"))
-		   (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL")
-		   (intern "COPY-UB8-FROM-SYSTEM" "SB-KERNEL"))))
-  (defun convert-from-foreign-usb8 (s len)
-    (let ((sap (sb-alien:alien-sap s)))
-      (declare (type sb-sys:system-area-pointer sap))
-      (locally
-	  (declare (optimize (speed 3) (safety 0)))
-	(let ((result (make-array len :element-type '(unsigned-byte 8))))
-	  (funcall copy-fn sap 0
-		   result (* sb-vm:vector-data-offset
-			     sb-vm:n-word-bits)
-		   (* len sb-vm:n-byte-bits))
-	  result)))))
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (sb-ext:without-package-locks
+      (defvar *system-copy-fn* (if (fboundp (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL"))
+				   (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL")
+				   (intern "COPY-UB8-FROM-SYSTEM-AREA" "SB-KERNEL")))
+    (defconstant +system-copy-offset+ (if (fboundp (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL"))
+					  (* sb-vm:vector-data-offset sb-vm:n-word-bits)
+					  0))
+    (defconstant +system-copy-multiplier+ (if (fboundp (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL"))
+					      sb-vm:n-byte-bits
+					      1))))
+  
+
+#+sbcl
+(defun convert-from-foreign-usb8 (s len)
+  (let ((sap (sb-alien:alien-sap s)))
+    (declare (type sb-sys:system-area-pointer sap))
+    (locally
+     (declare (optimize (speed 3) (safety 0)))
+     (let ((result (make-array len :element-type '(unsigned-byte 8))))
+       (funcall *system-copy-fn* sap 0 result +system-copy-offset+
+		(* len +system-copy-multiplier+))
+       result))))
 
 #+cmu
 (defun convert-from-foreign-usb8 (s len)