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(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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