0.8.3.23

[sbcl.git] / src / compiler / alpha / macros.lisp

diff --git a/src/compiler/alpha/macros.lisp b/src/compiler/alpha/macros.lisp
index 130b230..283cf22 100644 (file)
--- 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))