0e60bff93317

--- a/DOCUMENTATION.markdown	Sat Nov 12 12:51:05 2016 +0000
+++ b/DOCUMENTATION.markdown	Tue Nov 15 17:30:45 2016 +0000
@@ -240,6 +240,18 @@
 
   
 
+### `COMMENT` (macro)
+
+    (COMMENT
+      &BODY
+      BODY)
+
+Do nothing with a bunch of forms.
+
+  Handy for block-commenting multiple expressions.
+
+  
+
 ### `DIS` (macro)
 
     (DIS ARGLIST
@@ -300,6 +312,24 @@
 
 Run `body` with stdout and stderr redirected to the void.
 
+### `START-PROFILING` (function)
+
+    (START-PROFILING &OPTIONAL CALL-COUNT-PACKAGES)
+
+Start profiling performance.  SBCL only.
+
+  `call-count-packages` should be a list of package designators.  Functions in
+  these packages will have their call counts recorded via
+  `sb-sprof::profile-call-counts`.
+
+  
+
+### `STOP-PROFILING` (function)
+
+    (STOP-PROFILING &OPTIONAL (FILENAME lisp.prof))
+
+Stop profiling performance and dump a report to `filename`.  SBCL only.
+
 ### `STRUCTURAL-STRING` (function)
 
     (STRUCTURAL-STRING THING)

--- a/losh.asd	Sat Nov 12 12:51:05 2016 +0000
+++ b/losh.asd	Tue Nov 15 17:30:45 2016 +0000
@@ -7,7 +7,9 @@
   :license "MIT/X11"
   :version "0.0.1"
 
-  :depends-on (:iterate)
+  :depends-on (:iterate
+               #+sbcl :sb-sprof
+               )
 
   :serial t
   :components

--- a/losh.lisp	Sat Nov 12 12:51:05 2016 +0000
+++ b/losh.lisp	Tue Nov 15 17:30:45 2016 +0000
@@ -1340,6 +1340,14 @@
                                    (declare (optimize speed))
                                    ,@body)))))
 
+(defmacro comment (&body body)
+  "Do nothing with a bunch of forms.
+
+  Handy for block-commenting multiple expressions.
+
+  "
+  nil)
+
 
 (defun aesthetic-string (thing)
   "Return the string used to represent `thing` when printing aesthetically."
@@ -1408,6 +1416,45 @@
   (values))
 
 
+
+#+sbcl
+(defun dump-profile (filename)
+  (with-open-file (*standard-output* filename
+                                     :direction :output
+                                     :if-exists :supersede)
+    (sb-sprof:report :type :graph
+                     :sort-by :cumulative-samples
+                     :sort-order :ascending)
+    (sb-sprof:report :type :flat
+                     :min-percent 0.5)))
+
+#+sbcl
+(defun start-profiling (&optional call-count-packages)
+  "Start profiling performance.  SBCL only.
+
+  `call-count-packages` should be a list of package designators.  Functions in
+  these packages will have their call counts recorded via
+  `sb-sprof::profile-call-counts`.
+
+  "
+  (sb-sprof::reset)
+  (-<> call-count-packages
+    (mapcar #'mkstr <>)
+    (mapcar #'string-upcase <>)
+    (mapc #'sb-sprof::profile-call-counts <>))
+  (sb-sprof::start-profiling :max-samples 50000
+                             ; :mode :cpu
+                             :mode :time
+                             :sample-interval 0.01
+                             :threads :all))
+
+#+sbcl
+(defun stop-profiling (&optional (filename "lisp.prof"))
+  "Stop profiling performance and dump a report to `filename`.  SBCL only."
+  (sb-sprof::stop-profiling)
+  (dump-profile))
+
+
 ;;;; Weightlists --------------------------------------------------------------
 (defstruct (weightlist (:constructor %make-weightlist))
   weights sums items total)

--- a/package.lisp	Sat Nov 12 12:51:05 2016 +0000
+++ b/package.lisp	Tue Nov 15 17:30:45 2016 +0000
@@ -161,8 +161,11 @@
     :bits
     :shut-up
     :dis
+    :comment
     :aesthetic-string
     :structural-string
+    #+sbcl :start-profiling
+    #+sbcl :stop-profiling
     :print-table
     :print-hash-table))