Mercurial > hg > xemacs-beta
annotate lisp/itimer-autosave.el @ 5157:1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
-------------------- ChangeLog entries follow: --------------------
lisp/ChangeLog addition:
2010-03-18 Ben Wing <ben@xemacs.org>
* diagnose.el (show-memory-usage):
Rewrite to take into account API changes in memory-usage functions.
src/ChangeLog addition:
2010-03-18 Ben Wing <ben@xemacs.org>
* alloc.c:
* alloc.c (disksave_object_finalization_1):
* alloc.c (lisp_object_storage_size):
* alloc.c (listu):
* alloc.c (listn):
* alloc.c (Fobject_memory_usage_stats):
* alloc.c (compute_memusage_stats_length):
* alloc.c (Fobject_memory_usage):
* alloc.c (Ftotal_object_memory_usage):
* alloc.c (malloced_storage_size):
* alloc.c (common_init_alloc_early):
* alloc.c (reinit_alloc_objects_early):
* alloc.c (reinit_alloc_early):
* alloc.c (init_alloc_once_early):
* alloc.c (syms_of_alloc):
* alloc.c (reinit_vars_of_alloc):
* buffer.c:
* buffer.c (struct buffer_stats):
* buffer.c (compute_buffer_text_usage):
* buffer.c (compute_buffer_usage):
* buffer.c (buffer_memory_usage):
* buffer.c (buffer_objects_create):
* buffer.c (syms_of_buffer):
* buffer.c (vars_of_buffer):
* console-impl.h (struct console_methods):
* dynarr.c (Dynarr_memory_usage):
* emacs.c (main_1):
* events.c (clear_event_resource):
* extents.c:
* extents.c (compute_buffer_extent_usage):
* extents.c (extent_objects_create):
* extents.h:
* faces.c:
* faces.c (compute_face_cachel_usage):
* faces.c (face_objects_create):
* faces.h:
* general-slots.h:
* glyphs.c:
* glyphs.c (compute_glyph_cachel_usage):
* glyphs.c (glyph_objects_create):
* glyphs.h:
* lisp.h:
* lisp.h (struct usage_stats):
* lrecord.h:
* lrecord.h (enum lrecord_type):
* lrecord.h (struct lrecord_implementation):
* lrecord.h (MC_ALLOC_CALL_FINALIZER_FOR_DISKSAVE):
* lrecord.h (DEFINE_DUMPABLE_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_SIZABLE_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_FROB_BLOCK_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_FROB_BLOCK_SIZABLE_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_INTERNAL_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_SIZABLE_INTERNAL_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_SIZABLE_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_FROB_BLOCK_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_FROB_BLOCK_SIZABLE_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_INTERNAL_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_SIZABLE_INTERNAL_LISP_OBJECT):
* lrecord.h (MAKE_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_MODULE_LISP_OBJECT):
* lrecord.h (DEFINE_DUMPABLE_MODULE_SIZABLE_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_MODULE_LISP_OBJECT):
* lrecord.h (DEFINE_NODUMP_MODULE_SIZABLE_LISP_OBJECT):
* lrecord.h (MAKE_MODULE_LISP_OBJECT):
* lrecord.h (INIT_LISP_OBJECT):
* lrecord.h (INIT_MODULE_LISP_OBJECT):
* lrecord.h (UNDEF_LISP_OBJECT):
* lrecord.h (UNDEF_MODULE_LISP_OBJECT):
* lrecord.h (DECLARE_LISP_OBJECT):
* lrecord.h (DECLARE_MODULE_API_LISP_OBJECT):
* lrecord.h (DECLARE_MODULE_LISP_OBJECT):
* lstream.c:
* lstream.c (syms_of_lstream):
* lstream.c (vars_of_lstream):
* marker.c:
* marker.c (compute_buffer_marker_usage):
* mc-alloc.c (mc_alloced_storage_size):
* mc-alloc.h:
* mule-charset.c:
* mule-charset.c (struct charset_stats):
* mule-charset.c (compute_charset_usage):
* mule-charset.c (charset_memory_usage):
* mule-charset.c (mule_charset_objects_create):
* mule-charset.c (syms_of_mule_charset):
* mule-charset.c (vars_of_mule_charset):
* redisplay.c:
* redisplay.c (compute_rune_dynarr_usage):
* redisplay.c (compute_display_block_dynarr_usage):
* redisplay.c (compute_glyph_block_dynarr_usage):
* redisplay.c (compute_display_line_dynarr_usage):
* redisplay.c (compute_line_start_cache_dynarr_usage):
* redisplay.h:
* scrollbar-gtk.c (gtk_compute_scrollbar_instance_usage):
* scrollbar-msw.c (mswindows_compute_scrollbar_instance_usage):
* scrollbar-x.c (x_compute_scrollbar_instance_usage):
* scrollbar.c (compute_scrollbar_instance_usage):
* scrollbar.h:
* symbols.c:
* symbols.c (reinit_symbol_objects_early):
* symbols.c (init_symbols_once_early):
* symbols.c (reinit_symbols_early):
* symbols.c (defsymbol_massage_name_1):
* symsinit.h:
* ui-gtk.c:
* ui-gtk.c (emacs_gtk_object_getprop):
* ui-gtk.c (emacs_gtk_object_putprop):
* ui-gtk.c (ui_gtk_objects_create):
* unicode.c (compute_from_unicode_table_size_1):
* unicode.c (compute_to_unicode_table_size_1):
* unicode.c (compute_from_unicode_table_size):
* unicode.c (compute_to_unicode_table_size):
* window.c:
* window.c (struct window_stats):
* window.c (compute_window_mirror_usage):
* window.c (compute_window_usage):
* window.c (window_memory_usage):
* window.c (window_objects_create):
* window.c (syms_of_window):
* window.c (vars_of_window):
* window.h:
Redo memory-usage mechanism, make it general; add way of dynamically
initializing Lisp object types -- OBJECT_HAS_METHOD(), similar to
CONSOLE_HAS_METHOD().
(1) Create OBJECT_HAS_METHOD(), OBJECT_HAS_PROPERTY() etc. for
specifying that a Lisp object type has a particular method or
property. Call such methods with OBJECT_METH, MAYBE_OBJECT_METH,
OBJECT_METH_OR_GIVEN; retrieve properties with OBJECT_PROPERTY.
Methods that formerly required a DEFINE_*GENERAL_LISP_OBJECT() to
specify them (getprop, putprop, remprop, plist, disksave) now
instead use the dynamic-method mechanism. The main benefit of
this is that new methods or properties can be added without
requiring that the declaration statements of all existing methods
be modified. We have to make the `struct lrecord_implementation'
non-const, but I don't think this should have any effect on speed --
the only possible method that's really speed-critical is the
mark method, and we already extract those out into a separate
(non-const) array for increased cache locality.
Object methods need to be reinitialized after pdump, so we put
them in separate functions such as face_objects_create(),
extent_objects_create() and call them appropriately from emacs.c
The only current object property (`memusage_stats_list') that
objects can specify is a Lisp object and gets staticpro()ed so it
only needs to be set during dump time, but because it references
symbols that might not exist in a syms_of_() function, we
initialize it in vars_of_(). There is also an object property
(`num_extra_memusage_stats') that is automatically initialized based
on `memusage_stats_list'; we do that in reinit_vars_of_alloc(),
which is called after all vars_of_() functions are called.
`disksaver' method was renamed `disksave' to correspond with the
name normally given to the function (e.g. disksave_lstream()).
(2) Generalize the memory-usage mechanism in `buffer-memory-usage',
`window-memory-usage', `charset-memory-usage' into an object-type-
specific mechanism called by a single function
`object-memory-usage'. (Former function `object-memory-usage'
renamed to `total-object-memory-usage'). Generalize the mechanism
of different "slices" so that we can have different "classes" of
memory described and different "slices" onto each class; `t'
separates classes, `nil' separates slices. Currently we have
three classes defined: the memory of an object itself,
non-Lisp-object memory associated with the object (e.g. arrays or
dynarrs stored as fields in the object), and Lisp-object memory
associated with the object (other internal Lisp objects stored in
the object). This isn't completely finished yet and we might need
to further separate the "other internal Lisp objects" class into
two classes.
The memory-usage mechanism uses a `struct usage_stats' (renamed
from `struct overhead_stats') to describe a malloc-view onto a set
of allocated memory (listing how much was requested and various
types of overhead) and a more general `struct generic_usage_stats'
(with a `struct usage_stats' in it) to hold all statistics about
object memory. `struct generic_usage_stats' contains an array of
32 Bytecounts, which are statistics of unspecified semantics. The
intention is that individual types declare a corresponding struct
(e.g. `struct window_stats') with the same structure but with
specific fields in place of the array, corresponding to specific
statistics. The number of such statistics is an object property
computed from the list of tags (Lisp symbols describing the
statistics) stored in `memusage_stats_list'. The idea here is to
allow particular object types to customize the number and
semantics of the statistics where completely avoiding consing.
This doesn't matter so much yet, but the intention is to have the
memory usage of all objects computed at the end of GC, at the same
time as other statistics are currently computed. The values for
all statistics for a single type would be added up to compute
aggregate values for all objects of a specific type. To make this
efficient, we can't allow any memory allocation at all.
(3) Create some additional functions for creating lists that
specify the elements directly as args rather than indirectly through
an array: listn() (number of args given), listu() (list terminated
by Qunbound).
(4) Delete a bit of remaining unused C window_config stuff, also
unused lrecord_type_popup_data.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Thu, 18 Mar 2010 10:50:06 -0500 |
| parents | 41ff10fd062f |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 209 | 1 ;;; itimer-autosave.el --- Autosave functions with itimers |
| 2 | |
| 3 ;; Copyright status unknown | |
| 4 | |
| 5 ;; Maintainer: XEmacs Development Team | |
| 6 ;; Keywords: internal, dumped | |
| 7 | |
| 8 ;; This file is part of XEmacs. | |
| 9 | |
| 10 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 11 ;; under the terms of the GNU General Public License as published by | |
| 12 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 13 ;; any later version. | |
| 14 | |
| 15 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 ;; General Public License for more details. | |
| 19 | |
| 20 ;; You should have received a copy of the GNU General Public License | |
| 21 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
| 23 ;; 02111-1307, USA. | |
| 24 | |
| 25 ;;; Synched up with: Not in FSF. | |
| 26 | |
| 27 ;;; Commentary: | |
| 28 | |
| 29 ;; This file is dumped with XEmacs. | |
| 30 | |
| 31 ;; itimer-driven auto-saves | |
| 32 | |
| 33 ;;; Code: | |
| 34 | |
| 35 ;jwz: this is preloaded so don't ;;;###autoload | |
| 36 (defvar auto-save-timeout 960 | |
| 37 "*Number of seconds idle time before auto-save. | |
| 38 Zero or nil means disable auto-saving due to idleness. | |
| 39 | |
| 40 The actual amount of idle time between auto-saves is logarithmically related | |
| 41 to the size of the current buffer. This variable is the number of seconds | |
| 42 after which an auto-save will happen when the current buffer is 50k or less; | |
| 43 the timeout will be 2 1/4 times this in a 200k buffer, 3 3/4 times this in a | |
| 44 1000k buffer, and 4 1/2 times this in a 2000k buffer. | |
| 45 | |
| 46 See also the variable `auto-save-interval', which controls auto-saving based | |
| 47 on the number of characters typed.") | |
| 48 | |
| 49 ;jwz: this is preloaded so don't ;;;###autoload | |
| 50 (defvar auto-gc-threshold (/ gc-cons-threshold 3) | |
| 51 "*GC when this many bytes have been consed since the last GC, | |
| 52 and the user has been idle for `auto-save-timeout' seconds.") | |
| 53 | |
| 54 (defun auto-save-itimer () | |
| 55 "For use as a itimer callback function. | |
| 56 Auto-saves and garbage-collects based on the size of the current buffer | |
| 57 and the value of `auto-save-timeout', `auto-gc-threshold', and the current | |
| 58 keyboard idle-time." | |
| 59 (if (or (null auto-save-timeout) | |
| 60 (<= auto-save-timeout 0) | |
| 61 (eq (minibuffer-window) (selected-window))) | |
| 62 nil | |
| 63 (let ((buf-size (1+ (ash (buffer-size) -8))) | |
| 64 (delay-level 0) | |
| 65 (now (current-time)) | |
| 66 delay) | |
| 67 (while (> buf-size 64) | |
| 68 (setq delay-level (1+ delay-level) | |
| 69 buf-size (- buf-size (ash buf-size -2)))) | |
| 70 (if (< delay-level 4) | |
| 71 (setq delay-level 4)) | |
| 72 ;; delay_level is 4 for files under around 50k, 7 at 100k, 9 at 200k, | |
| 73 ;; 11 at 300k, and 12 at 500k, 15 at 1 meg, and 17 at 2 meg. | |
| 74 (setq delay (/ (* delay-level auto-save-timeout) 4)) | |
| 75 (let ((idle-time (if (or (not (consp last-input-time)) | |
| 76 (/= (car now) (car last-input-time))) | |
| 77 (1+ delay) | |
| 78 (- (car (cdr now)) (cdr last-input-time))))) | |
| 79 (and (> idle-time delay) | |
| 80 (do-auto-save)) | |
| 81 (and (> idle-time auto-save-timeout) | |
| 82 (> (consing-since-gc) auto-gc-threshold) | |
| 83 (garbage-collect))))) | |
| 84 ;; Look at the itimer that's currently running; if the user has changed | |
| 85 ;; the value of auto-save-timeout, modify this itimer to have the correct | |
| 86 ;; restart time. There will be some latency between when the user changes | |
| 87 ;; this variable and when it takes effect, but it will happen eventually. | |
| 88 (let ((self (get-itimer "auto-save"))) | |
| 89 (or self (error "auto-save-itimer can't find itself")) | |
| 90 (if (and auto-save-timeout (> auto-save-timeout 4)) | |
| 91 (or (= (itimer-restart self) (/ auto-save-timeout 4)) | |
| 92 (set-itimer-restart self (/ auto-save-timeout 4))))) | |
| 93 nil) | |
| 94 | |
| 95 (defun itimer-init-auto-gc () | |
| 96 (or noninteractive ; may be being run from after-init-hook in -batch mode. | |
| 97 (get-itimer "auto-save") | |
| 98 ;; the time here is just the first interval; if the user changes it | |
| 99 ;; later, it will adjust. | |
| 100 (let ((time (max 2 (/ (or auto-save-timeout 30) 4)))) | |
| 101 (start-itimer "auto-save" 'auto-save-itimer time time)))) | |
| 102 | |
| 103 (cond (purify-flag | |
| 104 ;; This file is being preloaded into an emacs about to be dumped. | |
| 105 ;; So arrange for the auto-save itimer to be started once emacs | |
| 106 ;; is launched. | |
| 107 (add-hook 'after-init-hook 'itimer-init-auto-gc)) | |
| 108 (t | |
| 109 ;; Otherwise, this file is being loaded into a normal, interactive | |
| 110 ;; emacs. Start the auto-save timer now. | |
| 111 (itimer-init-auto-gc))) | |
| 112 | |
| 113 | |
| 114 ;;; itimer-autosave.el ends here |