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;;;; Objective-CL, an Objective-C bridge for Common Lisp.
;;;; Copyright (C) 2007 Matthias Andreas Benkard.
;;;;
;;;; This program is free software: you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public License
;;;; as published by the Free Software Foundation, either version 3 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
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this program. If not, see
;;;; <http://www.gnu.org/licenses/>.
(in-package #:mulk.objective-cl)
;;; This file is for hacks that we might not want to actually use in a
;;; production environment but which might be useful in determining
;;; performance bottlenecks. These hacks may depend on specific
;;; versions of third-party libraries such as CFFI.
;;; The following hack depends on a specific CFFI snapshot. It tries to
;;; alleviate the apparent slowness of CFFI::PARSE-TYPE in that
;;; particular snapshot.
;;;
;;; The performance improvement for method calls accomplished by this
;;; hack amounts to approximately 80 % for PRIMITIVE-INVOKE and
;;; approximately 50 % for INVOKE.
#+(or)
(progn
(defparameter *cffi-hacked* nil)
(eval-when (:load-toplevel)
;; If we do this more than once, we cache our own cached function,
;; which is kind of useless.
(unless *cffi-hacked*
(setq *cffi-hacked* t)
(let ((original-cffi-parse-type-fn (fdefinition 'cffi::parse-type)))
(define-cached-function cffi::parse-type (type)
type
(funcall original-cffi-parse-type-fn type))))))
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