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;; -*- mode: Lisp; Syntax: Common-Lisp; Package: cells; -*-
#|
Cells -- Automatic Dataflow Managememnt
Copyright (C) 1995, 2006 by Kenneth Tilton
This library is free software; you can redistribute it and/or
modify it under the terms of the Lisp Lesser GNU Public License
(http://opensource.franz.com/preamble.html), known as the LLGPL.
This library is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the Lisp Lesser GNU Public License for more details.
|#
(in-package :cells)
(defun md-awake (self) (eql :awake (md-state self)))
(defun fm-grandparent (md)
(fm-parent (fm-parent md)))
(defmethod md-release (other)
(declare (ignorable other)))
(export! mdead)
;___________________ birth / death__________________________________
(defgeneric mdead (self)
(:method ((self model-object))
(unless *not-to-be*
(eq :eternal-rest (md-state self))))
(:method (self)
(declare (ignore self))
nil))
(defgeneric not-to-be (self)
(:method ((self list))
(dolist (s self)
(not-to-be s)))
(:method ((self array))
(loop for s across self
do (not-to-be s)))
(:method ((self hash-table))
(maphash (lambda (k v)
(declare (ignorable k))
(not-to-be v)) self))
(:method ((self model-object))
(md-quiesce self))
(:method :before ((self model-object))
(loop for slot-name in (md-owning-slots self)
do (not-to-be (slot-value self slot-name))))
(:method :around ((self model-object))
(declare (ignorable self))
(let ((*not-to-be* t)
(dbg nil))
(flet ((gok ()
(unless (eq (md-state self) :eternal-rest)
(call-next-method)
(setf (fm-parent self) nil
(md-state self) :eternal-rest)
(md-map-cells self nil
(lambda (c)
(c-assert (eq :quiesced (c-state c)) ()
"Cell ~a of dead model ~a not quiesced. Was not-to-be shadowed by
a primary method? Use :before instead."))) ;; fails if user obstructs not.to-be with primary method (use :before etc)
)))
(if (not dbg)
(gok)
(wtrc (0 100 "not.to-be nailing" self (when (typep self 'family)
(mapcar 'type-of (slot-value self '.kids))))
(gok)
(when dbg (trc "finished nailing" self))))))))
(defun md-quiesce (self)
(trc nil "md-quiesce nailing cells" self (type-of self))
(md-map-cells self nil (lambda (c)
(trc nil "quiescing" c)
(c-assert (not (find c *call-stack*)))
(c-quiesce c)))
(when (register? self)
(fm-check-out self)))
(defun c-quiesce (c)
(typecase c
(cell
(trc nil "c-quiesce unlinking" c)
(c-unlink-from-used c)
(dolist (caller (c-callers c))
(setf (c-value-state caller) :uncurrent)
(trc nil "c-quiesce unlinking caller and making uncurrent" :q c :caller caller)
(c-unlink-caller c caller))
(setf (c-state c) :quiesced) ;; 20061024 for debugging for now, might break some code tho
)))
(defparameter *to-be-dbg* nil)
(defmacro make-kid (class &rest initargs)
`(make-instance ,class
,@initargs
:fm-parent (progn (assert self) self)))
(export! self-owned self-owned?)
(defun (setf self-owned) (new-value self thing)
(if (consp thing)
(loop for e in thing do
(setf (self-owned self e) new-value))
(if new-value
(progn
(assert (not (find thing (z-owned self))))
(push thing (z-owned self)))
(progn
(assert (find thing (z-owned self)))
(setf (z-owned self)(delete thing (z-owned self)))))))
(defun self-owned? (self thing)
(find thing (z-owned self)))
(defvar *c-d-d*)
(defvar *max-d-d*)
(defun count-model (self)
(setf *c-d-d* (make-hash-table :test 'eq) *max-d-d* 0)
(with-metrics (t nil "cells statistics for" self)
(labels ((cc (self)
(count-it :thing)
(count-it :thing (type-of self))
;(count-it :thing-type (type-of self))
(loop for (id . c) in (cells self)
do (count-it :live-cell)
;(count-it :live-cell id)
(typecase c
(c-dependent
(count-it :dependent-cell)
(loop repeat (length (c-useds c))
do (count-it :cell-useds)
(count-it :dep-depth (c-depend-depth c))))
(otherwise (if (c-inputp c)
(count-it :c-input id)
(count-it :c-unknow))))
(loop repeat (length (c-callers c))
do (count-it :cell-callers)))
(loop repeat (length (cells-flushed self))
do (count-it :flushed-cell #+toomuchinfo id))
(loop for slot in (md-owning-slots self) do
(loop for k in (let ((sv (SLOT-VALUE self slot)))
(if (listp sv) sv (list sv)))
do (cc k)))))
(cc self))))
(defun c-depend-depth (ctop)
(if (null (c-useds ctop))
0
(or (gethash ctop *c-d-d*)
(labels ((cdd (c &optional (depth 1) chain)
(when (and (not (c-useds c))
(> depth *max-d-d*))
(setf *max-d-d* depth)
(trc "new dd champ from user" depth :down-to c)
(when (= depth 41)
(trc "end at" (c-slot-name c) :of (type-of (c-model c)))
(loop for c in chain do
(trc "called by" (c-slot-name c) :of (type-of (c-model c))))))
(setf (gethash c *c-d-d*)
;(break "c-depend-depth ~a" c)
(progn
;(trc "dd" c)
(1+ (loop for u in (c-useds c)
maximizing (cdd u (1+ depth) (cons c chain))))))))
(cdd ctop)))))
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