view src/vm-limit.c @ 5652:cc6f0266bc36

Avoid #'delq in core Lisp, for the sake of style, a very slightly smaller binary lisp/ChangeLog addition: 2012-05-01 Aidan Kehoe <kehoea@parhasard.net> Avoid #'delq in core code, for the sake of style and a (very slightly) smaller binary. * behavior.el (disable-behavior): * behavior.el (compute-behavior-group-children): * buff-menu.el (buffers-tab-items): * byte-optimize.el (byte-optimize-delay-constants-math): * byte-optimize.el (byte-optimize-logmumble): * byte-optimize.el (byte-decompile-bytecode-1): * byte-optimize.el (byte-optimize-lapcode): * bytecomp.el: * bytecomp.el (byte-compile-arglist-warn): * bytecomp.el (byte-compile-warn-about-unresolved-functions): * bytecomp.el (byte-compile-lambda): * bytecomp.el (byte-compile-out-toplevel): * bytecomp.el (byte-compile-insert): * bytecomp.el (byte-compile-defalias-warn): * cl-macs.el (cl-upcase-arg): * cl-macs.el (cl-transform-lambda): * cl-macs.el (cl-do-proclaim): * cl-macs.el (defstruct): * cl-macs.el (cl-make-type-test): * cl-macs.el (define-compiler-macro): * cl-macs.el (delete-duplicates): * cus-edit.el (widget-face-value-delete): * cus-edit.el (face-history): * easymenu.el (easy-menu-remove): * files.el (files-fetch-hook-value): * files.el (file-expand-wildcards): * font-lock.el (font-lock-update-removed-keyword-alist): * font-lock.el (font-lock-remove-keywords): * frame.el (frame-initialize): * frame.el (frame-notice-user-settings): * frame.el (set-frame-font): * frame.el (delete-other-frames): * frame.el (get-frame-for-buffer-noselect): * gnuserv.el (gnuserv-kill-buffer-function): * gnuserv.el (gnuserv-check-device): * gnuserv.el (gnuserv-kill-client): * gnuserv.el (gnuserv-buffer-done-1): * gtk-font-menu.el (gtk-reset-device-font-menus): * gutter-items.el (buffers-tab-items): * gutter.el (set-gutter-element-visible-p): * info.el (Info-find-file-node): * info.el (Info-history-add): * info.el (Info-build-annotation-completions): * info.el (Info-index): * info.el (Info-reannotate-node): * itimer.el (delete-itimer): * itimer.el (start-itimer): * lib-complete.el (lib-complete:cache-completions): * loadhist.el (unload-feature): * menubar-items.el (build-buffers-menu-internal): * menubar.el (delete-menu-item): * menubar.el (relabel-menu-item): * msw-font-menu.el (mswindows-reset-device-font-menus): * mule/make-coding-system.el (fixed-width-generate-helper): * next-error.el (next-error-find-buffer): * obsolete.el: * obsolete.el (find-non-ascii-charset-string): * obsolete.el (find-non-ascii-charset-region): * occur.el (multi-occur-by-filename-regexp): * occur.el (occur-1): * packages.el (packages-package-hierarchy-directory-names): * packages.el (package-get-key-1): * process.el (setenv): * simple.el (undo): * simple.el (handle-pre-motion-command-current-command-is-motion): * sound.el (load-sound-file): * wid-edit.el (widget-field-value-delete): * wid-edit.el (widget-checklist-match-inline): * wid-edit.el (widget-checklist-match-find): * wid-edit.el (widget-editable-list-delete-at): * wid-edit.el (widget-editable-list-entry-create): * window.el (quit-window): * x-font-menu.el (x-reset-device-font-menus-core): 1. Replace (delq nil (mapcar ....)) with analogous (mapcan ...) forms; this is in non-dumped files, it was done previously in dumped files. 2. Replace (delq FOO (copy-sequence BAR)) with (remove* FOO BAR), where #'eq and #'eql are equivalent 3. Replace (delq FOO BAR) with (delete* FOO BAR), where FOO is not a non-fixnum number. Saves a little space in the dumped file (since the compiler macro adds :test #'eq to the delete* call if it's not clear that FOO is not a non-fixnum number).
author Aidan Kehoe <kehoea@parhasard.net>
date Tue, 01 May 2012 16:17:42 +0100 (2012-05-01)
parents 308d34e9f07d
children
line wrap: on
line source
/* Functions for memory limit warnings.
   Copyright (C) 1990, 1992 Free Software Foundation, Inc.

This file is part of XEmacs.

XEmacs is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: FSF 19.30. */

#ifdef emacs
#include <config.h>
#include "lisp.h"
#endif

#include <stddef.h>
#ifndef emacs
typedef size_t SIZE;
typedef void *POINTER;
#define EXCEEDS_LISP_PTR(x) 0
#endif

#include "mem-limits.h"

#ifndef _NO_MALLOC_WARNING_

/*
  Level number of warnings already issued.
  0 -- no warnings issued.
  1 -- 75% warning already issued.
  2 -- 85% warning already issued.
  3 -- 95% warning issued; keep warning frequently.
*/
static int warnlevel;

/* Function to call to issue a warning;
   0 means don't issue them.  */
static void (*warn_function) (const char *);

/* Get more memory space, complaining if we're near the end. */

static void
check_memory_limits (void)
{
  extern POINTER (*__morecore) (ptrdiff_t size);

  POINTER cp;
  unsigned long five_percent;
  unsigned long data_size;
  void (*save_warn_fun) (const char *);

  if (lim_data == 0)
    get_lim_data ();
  five_percent = lim_data / 20;

  /* Find current end of memory and issue warning if getting near max */
  cp = (char *) (*__morecore) (0);
  data_size = (char *) cp - (char *) data_space_start;

  if (warn_function)
    {
      /* temporarily reset the warn_function to 0 or we will get infinite
	 looping. */
      save_warn_fun = warn_function;
      warn_function = 0;
      switch (warnlevel)
	{
	case 0:
	  if (data_size > five_percent * 15)
	    {
	      warnlevel++;
	      (*save_warn_fun) ("Warning: past 75% of memory limit");
	    }
	  break;

	case 1:
	  if (data_size > five_percent * 17)
	    {
	      warnlevel++;
	      (*save_warn_fun) ("Warning: past 85% of memory limit");
	    }
	  break;

	case 2:
	  if (data_size > five_percent * 19)
	    {
	      warnlevel++;
	      (*save_warn_fun) ("Warning: past 95% of memory limit");
	    }
	  break;

	default:
	  (*save_warn_fun) ("Warning: past acceptable memory limits");
	  break;
	}
      warn_function = save_warn_fun;
    }

  /* If we go down below 70% full, issue another 75% warning
     when we go up again.  */
  if (data_size < five_percent * 14)
    warnlevel = 0;
  /* If we go down below 80% full, issue another 85% warning
     when we go up again.  */
  else if (warnlevel > 1 && data_size < five_percent * 16)
    warnlevel = 1;
  /* If we go down below 90% full, issue another 95% warning
     when we go up again.  */
  else if (warnlevel > 2 && data_size < five_percent * 18)
    warnlevel = 2;

  if (EXCEEDS_LISP_PTR (cp))
    {
      if (warn_function)
	{
	  /* temporarily reset the warn_function to 0 or we will get infinite
	     looping. */
	  save_warn_fun = warn_function;
	  warn_function = 0;
	  (*save_warn_fun)
	    ("Warning: memory in use exceeds lisp pointer size");
	  warn_function = save_warn_fun;
	}
    }
}

#endif /* not _NO_MALLOC_WARNING_ */

/* Cause reinitialization based on job parameters;
   also declare where the end of pure storage is. */

void
memory_warnings (void *start,
#ifdef _NO_MALLOC_WARNING_
		 void (*UNUSED_ARG (warnfun)) (const char *) ATTRIBUTE_UNUSED
#else
		 void (*warnfun) (const char *)
#endif
		 )
{
#ifndef _NO_MALLOC_WARNING_
  extern void (* __after_morecore_hook) (void);	/* From gmalloc.c */
#endif

  if (start)
    data_space_start = (char*) start;
  else
    data_space_start = start_of_data ();

#ifndef _NO_MALLOC_WARNING_
  warn_function = warnfun;
  __after_morecore_hook = check_memory_limits;
#endif
}