r3750: *** empty log message ***

[kmrcl.git] / genutils.lisp

diff --git a/genutils.lisp b/genutils.lisp
index 4565089ddd7f66baba8742dfacddf828e2046531..cc7935a0c21c6f84e7a4f86d293e39b66be0e688 100644 (file)
--- a/genutils.lisp
+++ b/genutils.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: genutils.lisp,v 1.13 2002/12/14 18:51:53 kevin Exp $
+;;;; $Id: genutils.lisp,v 1.14 2003/01/13 21:40:20 kevin Exp $
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -510,3 +510,44 @@
                year
                hr min sec))))
 
+
+;; Benchmarking
+
+(defun print-float-units (val unit)
+  (cond
+    ((< val 1d-6)
+     (format t "~,2,9F nano~A" val unit))
+    ((< val 1d-3)
+     (format t "~,2,6F micro~A" val unit))
+    ((< val 1)
+     (format t "~,2,3F milli~A" val unit))
+    ((> val 1d9)
+     (format t "~,2,-9F giga~A" val unit))
+    ((> val 1d6)
+     (format t "~,2,-6F mega~A" val unit))
+    ((> val 1d3)
+     (format t "~,2,-3F kilo~A" val unit))
+    (t
+     (format t "~,2F ~A" val unit))))
+
+(defun print-seconds (secs)
+  (print-float-units secs "sec"))
+
+(defmacro time-iterations (n &body body)
+  (let ((i (gensym))
+       (count (gensym)))
+    `(progn
+       (let ((,count ,n))
+        (format t "~&Test with ~d iterations: ~W" ,count (quote ,body))
+        (let ((t1 (get-internal-real-time)))
+          (dotimes (,i ,count)
+            ,@body)
+          (let* ((t2 (get-internal-real-time))
+                 (secs (coerce (/ (- t2 t1)
+                                  internal-time-units-per-second)
+                               'double-float)))
+            (format t "~&Total time: ")
+            (print-seconds secs)
+            (format t ", time per iteration: ")
+            (print-seconds (coerce (/ secs ,n) 'double-float))))))))
+