annotate lisp/loadhist.el @ 5170:5ddbab03b0e6

various fixes to memory-usage stats -------------------- ChangeLog entries follow: -------------------- lisp/ChangeLog addition: 2010-03-25 Ben Wing <ben@xemacs.org> * diagnose.el (show-memory-usage): * diagnose.el (show-object-memory-usage-stats): Further changes to correspond with changes in the C code; add an additional column in show-object-memory-usage-stats showing the ancillary Lisp overhead used with each type; shrink columns for windows in show-memory-usage to get it to fit in 79 chars. src/ChangeLog addition: 2010-03-25 Ben Wing <ben@xemacs.org> * alloc.c: * alloc.c (struct): * alloc.c (finish_object_memory_usage_stats): * alloc.c (object_memory_usage_stats): * alloc.c (Fobject_memory_usage): * alloc.c (lisp_object_memory_usage_full): * alloc.c (compute_memusage_stats_length): * lrecord.h: * lrecord.h (struct lrecord_implementation): Add fields to the `lrecord_implementation' structure to list an offset into the array of extra statistics in a `struct generic_usage_stats' and a length, listing the first slice of ancillary Lisp-object memory. Compute automatically in compute_memusage_stats_length(). Use to add an entry `FOO-lisp-ancillary-storage' for object type FOO. Don't crash when an int or char is given to object-memory-usage, signal an error instead. Add functions lisp_object_memory_usage_full() and lisp_object_memory_usage() to compute the total memory usage of an object (sum of object, non-Lisp attached, and Lisp ancillary memory). * array.c: * array.c (gap_array_memory_usage): * array.h: Add function to return memory usage of a gap array. * buffer.c (struct buffer_stats): * buffer.c (compute_buffer_usage): * buffer.c (vars_of_buffer): * extents.c (compute_buffer_extent_usage): * marker.c: * marker.c (compute_buffer_marker_usage): * extents.h: * lisp.h: Remove `struct usage_stats' arg from compute_buffer_marker_usage() and compute_buffer_extent_usage() -- these are ancillary Lisp objects and don't get accumulated into `struct usage_stats'; change the value of `memusage_stats_list' so that `markers' and `extents' memory is in Lisp-ancillary, where it belongs. In compute_buffer_marker_usage(), use lisp_object_memory_usage() rather than lisp_object_storage_size(). * casetab.c: * casetab.c (case_table_memory_usage): * casetab.c (vars_of_casetab): * emacs.c (main_1): Add memory usage stats for case tables. * lisp.h: Add comment explaining the `struct generic_usage_stats' more, as well as the new fields in lrecord_implementation. * console-impl.h: * console-impl.h (struct console_methods): * scrollbar-gtk.c: * scrollbar-gtk.c (gtk_compute_scrollbar_instance_usage): * scrollbar-msw.c: * scrollbar-msw.c (mswindows_compute_scrollbar_instance_usage): * scrollbar-x.c: * scrollbar-x.c (x_compute_scrollbar_instance_usage): * scrollbar.c: * scrollbar.c (struct scrollbar_instance_stats): * scrollbar.c (compute_all_scrollbar_instance_usage): * scrollbar.c (scrollbar_instance_memory_usage): * scrollbar.c (scrollbar_objects_create): * scrollbar.c (vars_of_scrollbar): * scrollbar.h: * symsinit.h: * window.c: * window.c (find_window_mirror_maybe): * window.c (struct window_mirror_stats): * window.c (compute_window_mirror_usage): * window.c (window_mirror_memory_usage): * window.c (compute_window_usage): * window.c (window_objects_create): * window.c (syms_of_window): * window.c (vars_of_window): Redo memory-usage associated with windows, window mirrors, and scrollbar instances. Should fix crash in find_window_mirror, among other things. Properly assign memo ry to object memory, non-Lisp extra memory, and Lisp ancillary memory. For example, redisplay structures are non-Lisp memory hanging off a window mirror, not a window; make it an ancillary Lisp-object field. Window mirrors and scrollbar instances have their own statistics, among other things.
author Ben Wing <ben@xemacs.org>
date Thu, 25 Mar 2010 06:07:25 -0500
parents bedf3747a6d7
children 39d74978fd32
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1 ;;; loadhist.el --- lisp functions for working with feature groups
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2
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3 ;; Copyright (C) 1995 Free Software Foundation, Inc.
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4
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5 ;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
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6 ;; Version: 1.0
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7 ;; Keywords: internal, dumped
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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26 ;;; Synched up with: FSF 20.2.
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27
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28 ;; #### Sync this file!
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29
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30 ;;; Commentary:
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31
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32 ;; This file is dumped with XEmacs.
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33
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34 ;; These functions exploit the load-history system variable.
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35 ;; Entry points include `unload-feature', `symbol-file', and `feature-file'.
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36
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37 ;;; Code:
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38
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39 ;; load-history is a list of entries that look like this:
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40 ;; ("outline" outline-regexp ... (require . wid-edit) ... (provide . outline) ...)
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41
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42 ;; XEmacs; this function is in subr.el in GNU, and does not deal with
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43 ;; built-in symbols.
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44 (defun* symbol-file (sym &optional type)
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45 "Return the input source from which SYM was loaded.
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46 This is a file name, or nil if the source was a buffer with no associated file.
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47
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48 If TYPE is nil or omitted, any kind of definition is acceptable.
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49 If TYPE is `defun', then function, subr, special operator or macro definitions
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50 are acceptable.
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51 If TYPE is `defvar', then variable definitions are acceptable.
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52
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53 `defface' specifies a face definition only, and for the moment, it won't
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54 return faces created with `make-face' or `copy-face', just those created
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55 with `defface' and `custom-declare-face'."
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56 (interactive "SFind source file for symbol: ") ; XEmacs
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57 (let (built-in-file autoload-cons symbol-details)
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58 (cond ((and (eq 'autoload
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59 (car-safe
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60 (setq autoload-cons
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61 (and (fboundp sym) (symbol-function sym)))))
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62 (or (and (or (null type) (eq 'defvar type))
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63 (eq (fifth autoload-cons) 'keymap))
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64 (and (or (null type) (eq 'defun type))
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65 (memq (fifth autoload-cons) '(nil macro)))))
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66 (return-from symbol-file (locate-library (second autoload-cons))))
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67 ((eq 'defvar type)
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68 ;; Load history entries corresponding to variables are just
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69 ;; symbols.
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70 (dolist (entry load-history)
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71 (when (memq sym (cdr entry))
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72 (return-from symbol-file (car entry)))))
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73 ((not (null type))
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74 ;; Non-variables have the type stored as the car of the entry.
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75 (dolist (entry load-history)
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76 (when (and (setq symbol-details (rassq sym (cdr entry)))
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77 (eq type (car symbol-details)))
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78 (return-from symbol-file (car entry)))))
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79 (t
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80 ;; If TYPE hasn't been specified, we need to check both for
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81 ;; variables and other symbols.
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82 (dolist (entry load-history)
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83 (when (or (memq sym (cdr entry))
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84 (rassq sym (cdr entry)))
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85 (return-from symbol-file (car entry))))))
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86 (when (setq built-in-file (built-in-symbol-file sym type))
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87 (if (equal built-in-file (file-truename built-in-file))
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88 ;; Probably a full path name:
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89 built-in-file
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90 ;; This is a bit heuristic, but shouldn't realistically be a
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91 ;; problem:
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92 (if (string-match "\.elc?$" built-in-file)
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93 (concat (if (file-readable-p source-lisp)
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94 source-lisp
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95 lisp-directory)
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96 built-in-file)
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97 (concat source-directory "/src/" built-in-file))))))
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98
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99 (defun feature-symbols (feature)
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100 "Return the file and list of symbols associated with a given FEATURE."
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101 (let ((pair `(provide . ,feature)))
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102 (dolist (entry load-history)
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103 (when (member pair (cdr entry))
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104 (return entry)))))
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105
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106 (defun feature-file (feature)
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107 "Return the file name from which a given FEATURE was loaded.
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108 Actually, return the load argument, if any; this is sometimes the name of a
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109 Lisp file without an extension. If the feature came from an eval-buffer on
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110 a buffer with no associated file, or an eval-region, return nil."
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111 (unless (featurep feature)
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112 (error "%s is not a currently loaded feature" (symbol-name feature)))
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113 (car (feature-symbols feature)))
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114
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115 (defun file-symbols (file)
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116 "Return the file and list of symbols associated with FILE.
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117 The file name in the returned list is the string used to load the file,
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118 and may not be the same string as FILE, but it will be equivalent."
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119 (or (assoc file load-history)
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120 (assoc (file-name-sans-extension file) load-history)
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121 (assoc (concat file ".el") load-history)
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122 (assoc (concat file ".elc") load-history)))
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123
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124 (defun file-provides (file)
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125 "Return the list of features provided by FILE."
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126 (let ((provides nil))
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127 (dolist (x (cdr (file-symbols file)))
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128 (when (eq (car-safe x) 'provide)
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129 (push (cdr x) provides)))
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130 provides))
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131
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132 (defun file-requires (file)
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133 "Return the list of features required by FILE."
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134 (let ((requires nil))
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135 (dolist (x (cdr (file-symbols file)))
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136 (when (eq (car-safe x) 'require)
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137 (push (cdr x) requires)))
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138 requires))
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139
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140 (defun file-dependents (file)
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141 "Return the list of loaded libraries that depend on FILE.
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142 This can include FILE itself."
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143 (let ((provides (file-provides file))
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144 (dependents nil))
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145 (dolist (entry load-history)
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146 (dolist (x (cdr entry))
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147 (when (and (eq (car-safe x) 'require)
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148 (memq (cdr-safe x) provides))
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149 (push (car entry) dependents))))
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150 dependents))
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151
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152 ;; FSFmacs
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153 ;(defun read-feature (prompt)
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154 ; "Read a feature name \(string\) from the minibuffer,
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155 ;prompting with PROMPT and completing from `features', and
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156 ;return the feature \(symbol\)."
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157 ; (intern (completing-read prompt
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158 ; (mapcar #'(lambda (feature)
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159 ; (list (symbol-name feature)))
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160 ; features)
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161 ; nil t)))
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162
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163 ;; ;;;###autoload
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164 (defun unload-feature (feature &optional force)
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165 "Unload the library that provided FEATURE, restoring all its autoloads.
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166 If the feature is required by any other loaded code, and optional FORCE
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167 is nil, raise an error."
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168 (interactive "SFeature: ")
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169 (unless (featurep feature)
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170 (error "%s is not a currently loaded feature" (symbol-name feature)))
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171 (when (not force)
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172 (let* ((file (feature-file feature))
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173 (dependents (delete file (copy-sequence (file-dependents file)))))
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174 (when dependents
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175 (error "Loaded libraries %s depend on %s"
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176 (prin1-to-string dependents) file))))
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177 (let* ((flist (feature-symbols feature))
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178 (file (car flist))
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179 (unloading-module nil))
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180 (flet ((reset-aload (x)
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181 (let ((aload (get x 'autoload)))
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182 (if aload (fset x (cons 'autoload aload))))))
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183 (mapc
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184 #'(lambda (x)
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185 (cond ((stringp x) nil)
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186 ((consp x)
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187 ;; Remove any feature names that this file provided.
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188 (if (eq (car x) 'provide)
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189 (setq features (delq (cdr x) features))
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190 (if (eq (car x) 'module)
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191 (setq unloading-module t))))
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192 ((and (boundp x)
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193 (fboundp x))
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194 (makunbound x)
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195 (fmakunbound x)
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196 (reset-aload x))
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197 ((boundp x)
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198 (makunbound x))
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199 ((fboundp x)
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200 (fmakunbound x)
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201 (reset-aload x))))
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202 (cdr flist)))
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203 ;; Delete the load-history element for this file.
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204 (let ((elt (assoc file load-history)))
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205 (setq load-history (delq elt load-history)))
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206 ;; If it is a module, really unload it.
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207 (if unloading-module
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208 (declare-fboundp (unload-module (symbol-name feature))))))
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209
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210 (provide 'loadhist)
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211
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212 ;;; loadhist.el ends here