X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompiler%2Falpha%2Fmacros.lisp;h=283cf22954b2d87bae5c62504128286978a2cc19;hb=b7eed59f1877263e1af5ad80299e641e8276f77d;hp=998cec09eae95d8c006da9b4b6742bb8ef761eab;hpb=d75b4eb603f1e9e366997c8e378fe0ae0d79b5d9;p=sbcl.git

diff --git a/src/compiler/alpha/macros.lisp b/src/compiler/alpha/macros.lisp
index 998cec0..283cf22 100644
--- a/src/compiler/alpha/macros.lisp
+++ b/src/compiler/alpha/macros.lisp
@@ -176,22 +176,6 @@
      ,@body))
 
 ;;;; error code
-
-(defvar *adjustable-vectors* nil)
-
-(defmacro with-adjustable-vector ((var) &rest body)
-  `(let ((,var (or (pop *adjustable-vectors*)
-		   (make-array 16
-			       :element-type '(unsigned-byte 8)
-			       :fill-pointer 0
-			       :adjustable t))))
-     (declare (type (vector (unsigned-byte 8) 16) ,var))
-     (setf (fill-pointer ,var) 0)
-     (unwind-protect
-	 (progn
-	   ,@body)
-       (push ,var *adjustable-vectors*))))
-
 (eval-when (:compile-toplevel :load-toplevel :execute) 
   (defun emit-error-break (vop kind code values)
     (let ((vector (gensym)))
@@ -240,8 +224,7 @@
   Emit code for a continuable error with the specified Error-Code and
   context Values.  If the error is continued, execution resumes after
   the GENERATE-CERROR-CODE form."
-  (let ((continue (gensym "CONTINUE-LABEL-"))
-	(error (gensym "ERROR-LABEL-")))
+  (with-unique-names (continue error)
     `(let ((,continue (gen-label)))
        (emit-label ,continue)
        (assemble (*elsewhere*)
@@ -516,3 +499,12 @@
 		  (inst stq_u temp (- (* ,offset n-word-bytes)
 				      (* index ,scale) ,lowtag) object))))
 	   (move value result))))))
+
+(defmacro sb!sys::with-pinned-objects ((&rest objects) &body body)
+  "Arrange with the garbage collector that the pages occupied by
+OBJECTS will not be moved in memory for the duration of BODY.
+Useful for e.g. foreign calls where another thread may trigger
+garbage collection.  This is currently implemented by disabling GC"
+  (declare (ignore objects))		;should we eval these for side-effect?
+  `(without-gcing
+    ,@body))