X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftarget-extensions.lisp;h=6963eebb8b78f44be9ebccf28cbec2aa0e1f0903;hb=a6a12ed609d5467ec43b411283e5b3568fee81df;hp=259f3d7ed4e264a00cdf5a68b06050f380e0b3a6;hpb=c0ddb38a1b638c32f3c691995227408bdbb476d1;p=sbcl.git

diff --git a/src/code/target-extensions.lisp b/src/code/target-extensions.lisp
index 259f3d7..6963eeb 100644
--- a/src/code/target-extensions.lisp
+++ b/src/code/target-extensions.lisp
@@ -35,6 +35,13 @@ order when a saved core image starts up, after the system itself has
 been initialized. Unused by SBCL itself: reserved for user and
 applications.")
 
+(defvar *exit-hooks* nil
+  #!+sb-doc
+  "This is a list of functions which are called in an unspecified
+order when SBCL process exits. Unused by SBCL itself: reserved for
+user and applications. Using (QUIT :RECKLESSLY-P T), or calling
+exit(3) directly will circumvent these hooks.")
+
 
 ;;; Binary search for simple vectors
 (defun binary-search (value seq &key (key #'identity))
@@ -112,3 +119,8 @@ applications.")
                   (%shrink-vector string size)
                   string)))
          ,@body))))
+
+;;; The smallest power of two that is equal to or greater than X.
+(defun power-of-two-ceiling (x)
+  (declare (index x))
+  (ash 1 (integer-length (1- x))))