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+ − 1 /* Includes for memory limit warnings.
+ − 2 Copyright (C) 1990, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ − 3
+ − 4 This file is part of XEmacs.
+ − 5
+ − 6 XEmacs is free software; you can redistribute it and/or modify it
+ − 7 under the terms of the GNU General Public License as published by the
+ − 8 Free Software Foundation; either version 2, or (at your option) any
+ − 9 later version.
+ − 10
+ − 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 14 for more details.
+ − 15
+ − 16 You should have received a copy of the GNU General Public License
+ − 17 along with XEmacs; see the file COPYING. If not, write to
+ − 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 19 Boston, MA 02111-1307, USA. */
+ − 20
+ − 21 /* Synched up with: FSF 19.30. */
+ − 22
+ − 23 /* #### This ancient code really sucks.
+ − 24 configure should check for:
+ − 25 HAVE_SYS_RESOURCE_H, HAVE_ULIMIT_H, HAVE_GETRLIMIT, HAVE_ULIMIT,
+ − 26 and select action based on those values.
+ − 27 getrlimit() should be preferred to ulimit().
+ − 28 On Linux, ulimit() is deprecated and always returns -1. */
+ − 29
440
+ − 30 #ifndef INCLUDED_mem_limits_h_
+ − 31 #define INCLUDED_mem_limits_h_
428
+ − 32
+ − 33 #ifdef HAVE_CONFIG_H
+ − 34 #include <config.h>
+ − 35 #endif
+ − 36
+ − 37 #ifdef HAVE_ULIMIT_H
+ − 38 #include <ulimit.h>
+ − 39 #endif
+ − 40
+ − 41 /* Some systems need this before <sys/resource.h>. */
+ − 42 #include <sys/types.h>
+ − 43
+ − 44 #ifdef _LIBC
+ − 45
+ − 46 #include <sys/resource.h>
+ − 47 #define BSD4_2 /* Tell code below to use getrlimit. */
+ − 48
+ − 49 /* Old Linux startup code won't define __data_start. */
+ − 50 extern int etext, __data_start; weak_symbol (__data_start)
+ − 51 #define start_of_data() (&__data_start ?: &etext)
+ − 52
+ − 53 #else /* not GNU libc */
+ − 54
+ − 55 #if defined (__osf__) && (defined (__mips) || defined (mips) || defined (__alpha))
+ − 56 #include <sys/time.h>
+ − 57 #include <sys/resource.h>
+ − 58 #endif
+ − 59
+ − 60 #if defined(__bsdi__) || defined(__NetBSD__) || defined(__linux__) || defined(__OpenBSD__)
+ − 61 #if defined(__linux__) && defined (powerpc) /*Added by Fukui*/
+ − 62 #else /*Added by Fukui*/
+ − 63 #define BSD4_2
+ − 64 #endif /*Added by Fukui*/
+ − 65 #endif
+ − 66
+ − 67 #ifndef BSD4_2
+ − 68 #ifndef USG
442
+ − 69 #ifndef WIN32_NATIVE
+ − 70 #ifndef CYGWIN
428
+ − 71 #if defined(__linux__) && defined(powerpc) /*Added Kaoru Fukui*/
+ − 72 #else /*Added Kaoru Fukui*/
+ − 73 #include <sys/vlimit.h>
+ − 74 #endif /*Added by Fukui*/
442
+ − 75 #endif /* not CYGWIN */
+ − 76 #endif /* not WIN32_NATIVE */
428
+ − 77 #endif /* not USG */
+ − 78 #else /* if BSD4_2 */
+ − 79 #include <sys/time.h>
+ − 80 #include <sys/resource.h>
+ − 81 #endif /* BSD4_2 */
+ − 82
+ − 83 #ifdef emacs
+ − 84 /* The important properties of this type are that 1) it's a pointer, and
+ − 85 2) arithmetic on it should work as if the size of the object pointed
+ − 86 to has a size of 1. */
+ − 87 #ifdef __STDC__
+ − 88 typedef void *POINTER;
+ − 89 #else
+ − 90 typedef char *POINTER;
+ − 91 #endif
+ − 92
442
+ − 93 #ifndef CYGWIN
428
+ − 94 typedef unsigned long SIZE;
+ − 95 #endif
+ − 96
+ − 97 extern POINTER start_of_data (void);
+ − 98 #define EXCEEDS_LISP_PTR(ptr) 0
+ − 99
+ − 100 #ifdef BSD
+ − 101 extern int etext;
+ − 102 #define start_of_data() &etext
+ − 103 #endif
+ − 104
+ − 105 #else /* not emacs */
+ − 106 extern char etext;
+ − 107 #define start_of_data() &etext
+ − 108 #endif /* not emacs */
+ − 109
+ − 110 #endif /* not _LIBC */
+ − 111
+ − 112
+ − 113
+ − 114 /* start of data space; can be changed by calling malloc_init */
+ − 115 static POINTER data_space_start;
+ − 116
+ − 117 /* Number of bytes of writable memory we can expect to be able to get */
+ − 118 extern unsigned int lim_data;
+ − 119
442
+ − 120 #if defined (HEAP_IN_DATA) && !defined(PDUMP)
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+ − 121 extern unsigned long static_heap_size;
+ − 122 extern int initialized;
+ − 123 static void
+ − 124 get_lim_data (void)
+ − 125 {
+ − 126 if (!initialized)
+ − 127 {
+ − 128 lim_data = (unsigned int) -1; /* static_heap_size; */
+ − 129 }
+ − 130 else
+ − 131 {
+ − 132 lim_data = (unsigned int) -1;
+ − 133 }
+ − 134 }
+ − 135 #else
+ − 136 #ifdef NO_LIM_DATA
+ − 137 static void
+ − 138 get_lim_data (void)
+ − 139 {
+ − 140 lim_data = (unsigned int) -1;
+ − 141 }
+ − 142 #else /* not NO_LIM_DATA */
+ − 143
+ − 144 #ifdef USG
+ − 145
+ − 146 static void
+ − 147 get_lim_data (void)
+ − 148 {
+ − 149 lim_data = (unsigned int) -1;
+ − 150
+ − 151 /* Use the ulimit call, if we seem to have it. */
+ − 152 #if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX)
+ − 153 lim_data = ulimit (3, 0);
+ − 154 #endif
+ − 155
+ − 156 /* If that didn't work, just use the macro's value. */
+ − 157 #ifdef ULIMIT_BREAK_VALUE
+ − 158 if (lim_data == (unsigned int) -1)
+ − 159 lim_data = ULIMIT_BREAK_VALUE;
+ − 160 #endif
+ − 161
+ − 162 lim_data -= (long) data_space_start;
+ − 163 }
+ − 164
+ − 165 #else /* not USG */
442
+ − 166 #if defined( WIN32_NATIVE )
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+ − 167
+ − 168 static void
+ − 169 get_lim_data (void)
+ − 170 {
+ − 171 extern unsigned long data_region_size;
+ − 172 lim_data = data_region_size;
+ − 173 }
+ − 174
+ − 175 #else
+ − 176 #if !defined (BSD4_2) && !defined (__osf__)
+ − 177
+ − 178 static void
+ − 179 get_lim_data (void)
+ − 180 {
+ − 181 lim_data = vlimit (LIM_DATA, -1);
+ − 182 }
+ − 183
+ − 184 #else /* BSD4_2 */
+ − 185
+ − 186 static void
+ − 187 get_lim_data (void)
+ − 188 {
+ − 189 struct rlimit XXrlimit;
+ − 190
+ − 191 getrlimit (RLIMIT_DATA, &XXrlimit);
+ − 192 #ifdef RLIM_INFINITY
+ − 193 lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */
+ − 194 #else
+ − 195 lim_data = XXrlimit.rlim_cur; /* soft limit */
+ − 196 #endif
+ − 197 }
+ − 198 #endif /* BSD4_2 */
442
+ − 199 #endif /* not WIN32_NATIVE */
428
+ − 200 #endif /* not USG */
+ − 201 #endif /* not NO_LIM_DATA */
+ − 202 #endif /* not HEAP_IN_DATA */
+ − 203
440
+ − 204 #endif /* INCLUDED_mem_limits_h_ */
