Commit | Line | Data |
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9889c728 | 1 | /* Includes for memory limit warnings. |
0b5538bd TTN |
2 | Copyright (C) 1990, 1993, 1994, 1995, 1996, 2002, 2003, 2004, |
3 | 2005 Free Software Foundation, Inc. | |
9889c728 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd1168e1 | 9 | the Free Software Foundation; either version 2, or (at your option) |
9889c728 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
9889c728 | 21 | |
004164c5 RS |
22 | #ifdef MSDOS |
23 | #include <dpmi.h> | |
a8c1733b | 24 | extern int etext; |
004164c5 RS |
25 | #endif |
26 | ||
f920c441 RM |
27 | /* Some systems need this before <sys/resource.h>. */ |
28 | #include <sys/types.h> | |
29 | ||
b1814de2 RM |
30 | #ifdef _LIBC |
31 | ||
32 | #include <sys/resource.h> | |
ab8fb193 | 33 | #define BSD4_2 /* Tell code below to use getrlimit. */ |
b1814de2 | 34 | |
6c6b28ea | 35 | /* Old Linux startup code won't define __data_start. */ |
6d0dbbaf | 36 | extern int etext, __data_start; weak_extern (__data_start) |
6c6b28ea | 37 | #define start_of_data() (&__data_start ?: &etext) |
240049aa | 38 | |
3999f961 | 39 | #else /* not _LIBC */ |
b1814de2 | 40 | |
0a7d6039 DL |
41 | #ifdef HAVE_SYS_RESOURCE_H |
42 | # include <sys/time.h> | |
43 | # include <sys/resource.h> | |
44 | #else | |
45 | # if HAVE_SYS_VLIMIT_H | |
46 | # include <sys/vlimit.h> /* Obsolete, says glibc */ | |
47 | # endif | |
c027d070 JB |
48 | #endif |
49 | ||
cd1168e1 RS |
50 | #ifdef __bsdi__ |
51 | #define BSD4_2 | |
52 | #endif | |
53 | ||
c60ee5e7 JB |
54 | #ifdef CYGWIN |
55 | #define BSD4_2 | |
56 | #endif | |
57 | ||
9889c728 JB |
58 | #ifndef BSD4_2 |
59 | #ifndef USG | |
004164c5 | 60 | #ifndef MSDOS |
dbecffaa | 61 | #ifndef WINDOWSNT |
9889c728 | 62 | #include <sys/vlimit.h> |
dbecffaa | 63 | #endif /* not WINDOWSNT */ |
004164c5 | 64 | #endif /* not MSDOS */ |
9889c728 JB |
65 | #endif /* not USG */ |
66 | #else /* if BSD4_2 */ | |
67 | #include <sys/time.h> | |
68 | #include <sys/resource.h> | |
69 | #endif /* BSD4_2 */ | |
70 | ||
6fb48933 | 71 | #ifdef emacs |
5399ec5d JB |
72 | /* The important properties of this type are that 1) it's a pointer, and |
73 | 2) arithmetic on it should work as if the size of the object pointed | |
74 | to has a size of 1. */ | |
8bbffb13 | 75 | typedef POINTER_TYPE *POINTER; |
9889c728 JB |
76 | |
77 | typedef unsigned long SIZE; | |
78 | ||
79 | #ifdef NULL | |
80 | #undef NULL | |
81 | #endif | |
82 | #define NULL ((POINTER) 0) | |
83 | ||
9889c728 | 84 | extern POINTER start_of_data (); |
2fb0ce67 SM |
85 | #if defined USE_LSB_TAG |
86 | #define EXCEEDS_LISP_PTR(ptr) 0 | |
87 | #elif defined DATA_SEG_BITS | |
27050994 | 88 | #define EXCEEDS_LISP_PTR(ptr) \ |
9aae3fc9 | 89 | (((EMACS_UINT) (ptr) & ~DATA_SEG_BITS) >> VALBITS) |
27050994 | 90 | #else |
9aae3fc9 | 91 | #define EXCEEDS_LISP_PTR(ptr) ((EMACS_UINT) (ptr) >> VALBITS) |
27050994 | 92 | #endif |
9889c728 | 93 | |
f456a2bc KR |
94 | #ifdef DATA_START |
95 | #define start_of_data() ((char *)DATA_START) | |
96 | #endif | |
97 | ||
6df54671 | 98 | #ifdef BSD_SYSTEM |
9889c728 | 99 | #ifndef DATA_SEG_BITS |
f456a2bc | 100 | #ifndef DATA_START |
94d7c01a | 101 | extern char etext; |
9889c728 JB |
102 | #define start_of_data() &etext |
103 | #endif | |
104 | #endif | |
f456a2bc | 105 | #endif |
9889c728 | 106 | |
6c6b28ea | 107 | #else /* not emacs */ |
94d7c01a | 108 | extern char etext; |
9889c728 | 109 | #define start_of_data() &etext |
3999f961 | 110 | #endif /* not emacs */ |
9889c728 | 111 | |
3999f961 | 112 | #endif /* not _LIBC */ |
240049aa | 113 | |
9889c728 JB |
114 | |
115 | /* start of data space; can be changed by calling malloc_init */ | |
116 | static POINTER data_space_start; | |
117 | ||
118 | /* Number of bytes of writable memory we can expect to be able to get */ | |
78c33db1 | 119 | static unsigned long lim_data; |
9889c728 | 120 | |
19b8fb9d RS |
121 | #ifdef NO_LIM_DATA |
122 | static void | |
123 | get_lim_data () | |
124 | { | |
125 | lim_data = -1; | |
126 | } | |
127 | #else /* not NO_LIM_DATA */ | |
128 | ||
9889c728 JB |
129 | #ifdef USG |
130 | ||
c52713b1 | 131 | static void |
9889c728 JB |
132 | get_lim_data () |
133 | { | |
134 | extern long ulimit (); | |
161aa2f8 JB |
135 | |
136 | lim_data = -1; | |
137 | ||
138 | /* Use the ulimit call, if we seem to have it. */ | |
8a2a6032 | 139 | #if !defined (ULIMIT_BREAK_VALUE) || defined (GNU_LINUX) |
9889c728 JB |
140 | lim_data = ulimit (3, 0); |
141 | #endif | |
142 | ||
161aa2f8 JB |
143 | /* If that didn't work, just use the macro's value. */ |
144 | #ifdef ULIMIT_BREAK_VALUE | |
145 | if (lim_data == -1) | |
146 | lim_data = ULIMIT_BREAK_VALUE; | |
147 | #endif | |
148 | ||
9889c728 JB |
149 | lim_data -= (long) data_space_start; |
150 | } | |
151 | ||
152 | #else /* not USG */ | |
dbecffaa RS |
153 | #ifdef WINDOWSNT |
154 | ||
155 | static void | |
156 | get_lim_data () | |
157 | { | |
3bc2366f AI |
158 | extern unsigned long reserved_heap_size; |
159 | lim_data = reserved_heap_size; | |
dbecffaa RS |
160 | } |
161 | ||
162 | #else | |
004164c5 RS |
163 | #if !defined (BSD4_2) && !defined (__osf__) |
164 | ||
165 | #ifdef MSDOS | |
166 | void | |
167 | get_lim_data () | |
168 | { | |
169 | _go32_dpmi_meminfo info; | |
9889c728 | 170 | |
004164c5 RS |
171 | _go32_dpmi_get_free_memory_information (&info); |
172 | lim_data = info.available_memory; | |
173 | } | |
174 | #else /* not MSDOS */ | |
c52713b1 | 175 | static void |
9889c728 JB |
176 | get_lim_data () |
177 | { | |
178 | lim_data = vlimit (LIM_DATA, -1); | |
179 | } | |
004164c5 | 180 | #endif /* not MSDOS */ |
9889c728 JB |
181 | |
182 | #else /* BSD4_2 */ | |
183 | ||
c52713b1 | 184 | static void |
9889c728 JB |
185 | get_lim_data () |
186 | { | |
187 | struct rlimit XXrlimit; | |
188 | ||
189 | getrlimit (RLIMIT_DATA, &XXrlimit); | |
190 | #ifdef RLIM_INFINITY | |
191 | lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */ | |
192 | #else | |
193 | lim_data = XXrlimit.rlim_cur; /* soft limit */ | |
194 | #endif | |
195 | } | |
196 | #endif /* BSD4_2 */ | |
dbecffaa | 197 | #endif /* not WINDOWSNT */ |
9889c728 | 198 | #endif /* not USG */ |
19b8fb9d | 199 | #endif /* not NO_LIM_DATA */ |
ab5796a9 MB |
200 | |
201 | /* arch-tag: fe39244e-e54f-4208-b7aa-02556f7841c5 | |
202 | (do not change this comment) */ |