X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Falpha%2Fmacros.lisp;h=283cf22954b2d87bae5c62504128286978a2cc19;hb=b7eed59f1877263e1af5ad80299e641e8276f77d;hp=130b2306b8dbf6faf5c1b8d81d87edee7b755d3e;hpb=670010e3f3dcd62efaf23f61abdc73950edb88c6;p=sbcl.git

diff --git a/src/compiler/alpha/macros.lisp b/src/compiler/alpha/macros.lisp
index 130b230..283cf22 100644
--- a/src/compiler/alpha/macros.lisp
+++ b/src/compiler/alpha/macros.lisp
@@ -499,3 +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))