annotate src/vm-limit.c @ 1314:15a91d7ae2d1

[xemacs-hg @ 2003-02-20 08:16:21 by ben] check in makefile fixes et al Makefile.in.in: Major surgery. Move all stuff related to building anything in the src/ directory into src/. Simplify the dependencies -- everything in src/ is dependent on the single entry `src' in MAKE_SUBDIRS. Remove weirdo targets like `all-elc[s]', dump-elc[s], etc. mule/mule-msw-init.el: Removed. Delete this file. mule/mule-win32-init.el: New file, with stuff from mule-msw-init.el -- not just for MS Windows native, boys and girls! bytecomp.el: Change code inserted to catch trying to load a Mule-only .elc file in a non-Mule XEmacs. Formerly you got the rather cryptic "The required feature `mule' cannot be provided". Now you get "Loading this file requires Mule support". finder.el: Remove dependency on which directory this function is invoked from. update-elc.el: Don't mess around with ../src/BYTECOMPILE_CHANGE. Now that Makefile.in.in and xemacs.mak are in sync, both of them use NEEDTODUMP and the other one isn't used. dumped-lisp.el: Rewrite in terms of `list' and `nconc' instead of assemble-list, so we can have arbitrary forms, not just `when-feature'. very-early-lisp.el: Nuke this file. finder-inf.el, packages.el, update-elc.el, update-elc-2.el, loadup.el, make-docfile.el: Eliminate references to very-early-lisp. msw-glyphs.el: Comment clarification. xemacs.mak: Add macros DO_TEMACS, DO_XEMACS, and a few others; this macro section is now completely in sync with src/Makefile.in.in. Copy check-features, load-shadows, and rebuilding finder-inf.el from src/Makefile.in.in. The main build/dump/recompile process is now synchronized with src/Makefile.in.in. Change `WARNING' to `NOTE' and `error checking' to `error-checking' TO avoid tripping faux warnings and errors in the VC++ IDE. Makefile.in.in: Major surgery. Move all stuff related to building anything in the src/ directory from top-level Makefile.in.in to here. Simplify the dependencies. Rearrange into logical subsections. Synchronize the main compile/dump/build-elcs section with xemacs.mak, which is already clean and in good working order. Remove weirdo targets like `all-elc[s]', dump-elc[s], etc. Add additional levels of macros \(e.g. DO_TEMACS, DO_XEMACS, TEMACS_BATCH, XEMACS_BATCH, XEMACS_BATCH_PACKAGES) to factor out duplicated stuff. Clean up handling of "HEAP_IN_DATA" (Cygwin) so it doesn't need to ignore the return value from dumping. Add .NO_PARALLEL since various aspects of building and dumping must be serialized but do not always have dependencies between them (this is impossible in some cases). Everything related to src/ now gets built in one pass in this directory by just running `make' (except the Makefiles themselves and config.h, paths.h, Emacs.ad.h, and other generated .h files). console.c: Update list of possibly valid console types. emacs.c: Rationalize the specifying and handling of the type of the first frame. This was originally prompted by a workspace in which I got GTK to compile under C++ and in the process fixed it so it could coexist with X in the same build -- hence, a combined TTY/X/MS-Windows/GTK build is now possible under Cygwin. (However, you can't simultaneously *display* more than one kind of device connection -- but getting that to work is not that difficult. Perhaps a project for a bored grad student. I (ben) would do it but don't see the use.) To make sense of this, I added new switches that can be used to specifically indicate the window system: -x [aka --use-x], -tty \[aka --use-tty], -msw [aka --use-ms-windows], -gtk [aka --use-gtk], and -gnome [aka --use-gnome, same as --use-gtk]. -nw continues as an alias for -tty. When none have been given, XEmacs checks for other parameters implying particular device types (-t -> tty, -display -> x [or should it have same treatment as DISPLAY below?]), and has ad-hoc logic afterwards: if env var DISPLAY is set, use x (or gtk? perhaps should check whether gnome is running), else MS Windows if it exsits, else TTY if it exists, else stream, and you must be running in batch mode. This also fixes an existing bug whereby compiling with no x, no mswin, no tty, when running non- interactively (e.g. to dump) I get "sorry, must have TTY support". emacs.c: Turn on Vstack_trace_on_error so that errors are debuggable even when occurring extremely early in reinitialization. emacs.c: Try to make sure that the user can see message output under Windows (i.e. it doesn't just disappear right away) regardless of when it occurs, e.g. in the middle of creating the first frame. emacs.c: Define new function `emacs-run-status', indicating whether XEmacs is noninteractive or interactive, whether raw, post-dump/pdump-load or run-temacs, whether we are dumping, whether pdump is in effect. event-stream.c: It's "mommas are fat", not "momas are fat". Fix other typo. event-stream.c: Conditionalize in_menu_callback check on HAVE_MENUBARS, because it won't exist on w/o menubar support, lisp.h: More hackery on RETURN_NOT_REACHED. Cygwin v3.2 DOES complain here if RETURN_NOT_REACHED() is blank, as it is for GCC 2.5+. So make it blank only for GCC 2.5 through 2.999999999999999. Declare Vstack_trace_on_error. profile.c: Need to include "profile.h" to fix warnings. sheap.c: Don't fatal() when need to rerun Make, just stderr_out() and exit(0). That way we can distinguish between a dumping failing expectedly (due to lack of stack space, triggering another dump) and unexpectedly, in which case, we want to stop building. (or go on, if -K is given) syntax.c, syntax.h: Use ints where they belong, and enum syntaxcode's where they belong, and fix warnings thereby. syntax.h: Fix crash caused by an edge condition in the syntax-cache macros. text.h: Spacing fixes. xmotif.h: New file, to get around shadowing warnings. EmacsManager.c, event-Xt.c, glyphs-x.c, gui-x.c, input-method-motif.c, xmmanagerp.h, xmprimitivep.h: Include xmotif.h. alloc.c: Conditionalize in_malloc on ERROR_CHECK_MALLOC. config.h.in, file-coding.h, fileio.c, getloadavg.c, select-x.c, signal.c, sysdep.c, sysfile.h, systime.h, text.c, unicode.c: Eliminate HAVE_WIN32_CODING_SYSTEMS, use WIN32_ANY instead. Replace defined (WIN32_NATIVE) || defined (CYGWIN) with WIN32_ANY. lisp.h: More futile attempts to walk and chew gum at the same time when dealing with subr's that don't return.
author ben
date Thu, 20 Feb 2003 08:16:21 +0000
parents e38acbeb1cae
children 04bc9d2f42c7
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1 /* Functions for memory limit warnings.
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2 Copyright (C) 1990, 1992 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.30. */
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22
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23 #ifdef emacs
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24 #include <config.h>
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25 #include "lisp.h"
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26 #endif
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27
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28 #include <stddef.h>
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29 #ifndef emacs
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30 typedef size_t SIZE;
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31 typedef void *POINTER;
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32 #define EXCEEDS_LISP_PTR(x) 0
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33 #endif
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34
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35 #include "mem-limits.h"
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36
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37 #ifndef _NO_MALLOC_WARNING_
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38
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39 /*
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40 Level number of warnings already issued.
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41 0 -- no warnings issued.
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42 1 -- 75% warning already issued.
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43 2 -- 85% warning already issued.
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44 3 -- 95% warning issued; keep warning frequently.
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45 */
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46 static int warnlevel;
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47
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48 /* Function to call to issue a warning;
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49 0 means don't issue them. */
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50 static void (*warn_function) (const char *);
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51
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52 /* Get more memory space, complaining if we're near the end. */
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53
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54 static void
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55 check_memory_limits (void)
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56 {
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57 extern POINTER (*__morecore) (ptrdiff_t size);
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58
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59 POINTER cp;
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60 unsigned long five_percent;
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61 unsigned long data_size;
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62 void (*save_warn_fun) (const char *);
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63
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64 if (lim_data == 0)
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65 get_lim_data ();
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66 five_percent = lim_data / 20;
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67
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68 /* Find current end of memory and issue warning if getting near max */
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69 cp = (char *) (*__morecore) (0);
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70 data_size = (char *) cp - (char *) data_space_start;
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71
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72 if (warn_function)
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73 {
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74 /* temporarily reset the warn_function to 0 or we will get infinite
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75 looping. */
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76 save_warn_fun = warn_function;
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77 warn_function = 0;
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78 switch (warnlevel)
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79 {
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80 case 0:
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81 if (data_size > five_percent * 15)
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82 {
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83 warnlevel++;
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84 (*save_warn_fun) ("Warning: past 75% of memory limit");
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85 }
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86 break;
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87
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88 case 1:
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89 if (data_size > five_percent * 17)
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90 {
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91 warnlevel++;
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92 (*save_warn_fun) ("Warning: past 85% of memory limit");
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93 }
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94 break;
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95
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96 case 2:
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97 if (data_size > five_percent * 19)
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98 {
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99 warnlevel++;
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100 (*save_warn_fun) ("Warning: past 95% of memory limit");
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101 }
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102 break;
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103
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104 default:
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105 (*save_warn_fun) ("Warning: past acceptable memory limits");
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106 break;
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107 }
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108 warn_function = save_warn_fun;
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109 }
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110
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111 /* If we go down below 70% full, issue another 75% warning
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112 when we go up again. */
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113 if (data_size < five_percent * 14)
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114 warnlevel = 0;
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115 /* If we go down below 80% full, issue another 85% warning
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116 when we go up again. */
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117 else if (warnlevel > 1 && data_size < five_percent * 16)
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118 warnlevel = 1;
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119 /* If we go down below 90% full, issue another 95% warning
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120 when we go up again. */
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121 else if (warnlevel > 2 && data_size < five_percent * 18)
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122 warnlevel = 2;
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123
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124 if (EXCEEDS_LISP_PTR (cp))
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125 {
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126 if (warn_function)
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127 {
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128 /* temporarily reset the warn_function to 0 or we will get infinite
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129 looping. */
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130 save_warn_fun = warn_function;
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131 warn_function = 0;
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132 (*save_warn_fun)
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133 ("Warning: memory in use exceeds lisp pointer size");
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134 warn_function = save_warn_fun;
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135 }
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136 }
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137 }
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138
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139 #endif /* not _NO_MALLOC_WARNING_ */
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140
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141 /* Cause reinitialization based on job parameters;
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142 also declare where the end of pure storage is. */
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143
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144 void
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145 memory_warnings (void *start, void (*warnfun) (const char *))
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146 {
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147 #ifndef _NO_MALLOC_WARNING_
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148 extern void (* __after_morecore_hook) (void); /* From gmalloc.c */
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149 #endif
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150
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151 if (start)
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152 data_space_start = (char*) start;
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153 else
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154 data_space_start = start_of_data ();
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155
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156 #ifndef _NO_MALLOC_WARNING_
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157 warn_function = warnfun;
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158 __after_morecore_hook = check_memory_limits;
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159 #endif
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160 }