r10380: working on new sbcl

[uffi.git] / src / aggregates.lisp

diff --git a/src/aggregates.lisp b/src/aggregates.lisp
index 6be523ddd2b1760c6aca585b8f3fc44d242aed9c..5d0bcf75bfd07b0f7896efdc1d11091d7e0ce261 100644 (file)
--- a/src/aggregates.lisp
+++ b/src/aggregates.lisp
@@ -227,20 +227,28 @@ 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)))))
+(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)