| 1 | ;;; -*-lisp-*- |
| 2 | ;;; |
| 3 | ;;; Output scheduling protocol implementation |
| 4 | ;;; |
| 5 | ;;; (c) 2009 Straylight/Edgeware |
| 6 | ;;; |
| 7 | |
| 8 | ;;;----- Licensing notice --------------------------------------------------- |
| 9 | ;;; |
| 10 | ;;; This file is part of the Sensible Object Design, an object system for C. |
| 11 | ;;; |
| 12 | ;;; SOD is free software; you can redistribute it and/or modify |
| 13 | ;;; it under the terms of the GNU General Public License as published by |
| 14 | ;;; the Free Software Foundation; either version 2 of the License, or |
| 15 | ;;; (at your option) any later version. |
| 16 | ;;; |
| 17 | ;;; SOD is distributed in the hope that it will be useful, |
| 18 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | ;;; GNU General Public License for more details. |
| 21 | ;;; |
| 22 | ;;; You should have received a copy of the GNU General Public License |
| 23 | ;;; along with SOD; if not, write to the Free Software Foundation, |
| 24 | ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 25 | |
| 26 | (cl:in-package #:sod) |
| 27 | |
| 28 | ;;;-------------------------------------------------------------------------- |
| 29 | ;;; Sequencing machinery. |
| 30 | |
| 31 | (defmethod print-object ((item sequencer-item) stream) |
| 32 | (print-unreadable-object (item stream :type t) |
| 33 | (prin1 (sequencer-item-name item) stream))) |
| 34 | |
| 35 | (defmethod shared-initialize ((sequencer sequencer) slot-names |
| 36 | &key (constraints nil constraintsp)) |
| 37 | (call-next-method) |
| 38 | (when constraintsp |
| 39 | (setf (slot-value sequencer 'constraints) |
| 40 | (mapcar (lambda (constraint) |
| 41 | (mapcar (lambda (name) |
| 42 | (ensure-sequencer-item sequencer name)) |
| 43 | constraint)) |
| 44 | (reverse constraints)))) |
| 45 | sequencer) |
| 46 | |
| 47 | (defmethod ensure-sequencer-item ((sequencer sequencer) name) |
| 48 | (with-slots (table) sequencer |
| 49 | (or (gethash name table) |
| 50 | (setf (gethash name table) (make-sequencer-item name))))) |
| 51 | |
| 52 | (defmethod add-sequencer-constraint ((sequencer sequencer) (constraint list)) |
| 53 | (let ((converted-constraint |
| 54 | (mapcar (lambda (name) |
| 55 | (ensure-sequencer-item sequencer name)) |
| 56 | constraint))) |
| 57 | (with-slots (constraints) sequencer |
| 58 | (pushnew converted-constraint constraints)))) |
| 59 | |
| 60 | (defmethod add-sequencer-item-function ((sequencer sequencer) name function) |
| 61 | (let ((item (ensure-sequencer-item sequencer name))) |
| 62 | (pushnew function (sequencer-item-functions item)))) |
| 63 | |
| 64 | (defmethod invoke-sequencer-items ((sequencer sequencer) &rest arguments) |
| 65 | #+debug |
| 66 | (format *debug-io* "~@<;; ~@;Constraints: ~_~ |
| 67 | ~<~@{~< * ~;~@{~S~^, ~:_~}~:>~:@_~}~:>~:>" |
| 68 | (mapcar (lambda (constraint) |
| 69 | (mapcar #'sequencer-item-name constraint)) |
| 70 | (sequencer-constraints sequencer))) |
| 71 | (let ((seen (make-hash-table))) |
| 72 | (dolist (item (merge-lists (reverse (sequencer-constraints sequencer)))) |
| 73 | (setf (gethash item seen) t) |
| 74 | (dolist (function (reverse (sequencer-item-functions item))) |
| 75 | (apply function arguments))) |
| 76 | (maphash (lambda (name item) |
| 77 | (unless (gethash item seen) |
| 78 | (warn "Unused output item ~S" name))) |
| 79 | (sequencer-table sequencer)))) |
| 80 | |
| 81 | ;;;----- That's all, folks -------------------------------------------------- |