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Common Lisp implementation running on the JVM
;;; profiler.lisp
;;;
;;; Copyright (C) 2003-2005 Peter Graves
;;; $Id$
;;;
;;; This program is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License
;;; as published by the Free Software Foundation; either version 2
;;; of the License, or (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
;;;
;;; As a special exception, the copyright holders of this library give you
;;; permission to link this library with independent modules to produce an
;;; executable, regardless of the license terms of these independent
;;; modules, and to copy and distribute the resulting executable under
;;; terms of your choice, provided that you also meet, for each linked
;;; independent module, the terms and conditions of the license of that
;;; module. An independent module is a module which is not derived from
;;; or based on this library. If you modify this library, you may extend
;;; this exception to your version of the library, but you are not
;;; obligated to do so. If you do not wish to do so, delete this
;;; exception statement from your version.
(in-package #:profiler)
(export '(*hidden-functions* *granularity*
show-call-counts show-hot-counts with-profiling))
(require '#:clos)
(require '#:format)
(defvar *type* nil)
(defvar *granularity* 1 "Sampling interval (in milliseconds).")
(defvar *hidden-functions*
'(funcall apply eval
sys::%eval sys::interactive-eval
tpl::repl tpl::top-level-loop))
(defstruct (profile-info
(:constructor make-profile-info (object full-count hot-count)))
object
full-count
hot-count)
;; Returns list of all symbols with non-zero call counts.
(defun list-called-objects ()
(let ((result '()))
(dolist (pkg (list-all-packages))
(dolist (sym (sys:package-symbols pkg))
(unless (memq sym *hidden-functions*)
(when (fboundp sym)
(let* ((definition (fdefinition sym))
(full-count (sys:call-count definition))
(hot-count (sys:hot-count definition)))
(unless (zerop full-count)
(cond ((typep definition 'generic-function)
(push (make-profile-info definition
full-count hot-count) result)
(dolist (method
(mop::generic-function-methods definition))
(let ((function (mop:method-function method)))
(setf full-count (sys:call-count function))
(setf hot-count (sys:hot-count function)))
(unless (zerop full-count)
(push (make-profile-info method full-count
hot-count) result))))
(t
(push (make-profile-info sym full-count hot-count)
result)))))))))
(remove-duplicates result :key 'profile-info-object :test 'eq)))
(defun object-name (object)
(cond ((symbolp object)
object)
((typep object 'generic-function)
(mop:generic-function-name object))
((typep object 'method)
(list 'METHOD
(mop:generic-function-name (mop:method-generic-function object))
(mop:method-specializers object)))))
(defun object-compiled-function-p (object)
(cond ((symbolp object)
(compiled-function-p (fdefinition object)))
((typep object 'method)
(compiled-function-p (mop:method-function object)))
(t
(compiled-function-p object))))
(defun show-call-count (info max-count)
(let* ((object (profile-info-object info))
(count (profile-info-full-count info)))
(if max-count
(format t "~5,1F ~8D ~S~A~%"
(/ (* count 100.0) max-count)
count
(object-name object)
(if (object-compiled-function-p object)
""
" [interpreted function]"))
(format t "~8D ~S~A~%"
count
(object-name object)
(if (object-compiled-function-p object)
""
" [interpreted function]")))))
(defun show-hot-count (info max-count)
(let* ((object (profile-info-object info))
(count (profile-info-hot-count info)))
(if max-count
(format t "~5,1F ~8D ~S~A~%"
(/ (* count 100.0) max-count)
count
(object-name object)
(if (object-compiled-function-p object)
""
" [interpreted function]"))
(format t "~8D ~S~A~%"
count
(object-name object)
(if (object-compiled-function-p object)
""
" [interpreted function]")))))
(defun show-call-counts ()
(let ((list (list-called-objects)))
(setf list (sort list #'< :key 'profile-info-full-count))
(let ((max-count nil))
(when (eq *type* :time)
(let ((last-info (car (last list))))
(setf max-count (if last-info
(profile-info-full-count last-info)
nil))
(when (eql max-count 0)
(setf max-count nil))))
(dolist (info list)
(show-call-count info max-count))))
(values))
(defun show-hot-counts ()
(let ((list (list-called-objects)))
(setf list (sort list #'< :key 'profile-info-hot-count))
(let ((max-count nil))
(when (eq *type* :time)
(let ((last-info (car (last list))))
(setf max-count (if last-info
(profile-info-hot-count last-info)
nil))
(when (eql max-count 0)
(setf max-count nil))))
(dolist (info list)
(show-hot-count info max-count))))
(values))
(defun start-profiler (&key type)
"Starts the profiler.
:TYPE may be either :TIME (statistical sampling) or :COUNT-ONLY (exact call
counts)."
(unless type
(setf type :time))
(unless (memq type '(:time :count-only))
(error ":TYPE must be :TIME or :COUNT-ONLY"))
(setf *type* type)
(%start-profiler type *granularity*))
(defmacro with-profiling ((&key type) &body body)
`(unwind-protect (progn (start-profiler :type ,type) ,@body)
(stop-profiler)))