Commit | Line | Data |
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9889c728 | 1 | /* Includes for memory limit warnings. |
c6c5df7f | 2 | Copyright (C) 1990, 1993 Free Software Foundation, Inc. |
9889c728 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
cd1168e1 | 8 | the Free Software Foundation; either version 2, or (at your option) |
9889c728 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
c027d070 JB |
20 | #if defined(__osf__) && (defined(__mips) || defined(mips)) |
21 | #include <sys/time.h> | |
22 | #include <sys/resource.h> | |
23 | #endif | |
24 | ||
cd1168e1 RS |
25 | #ifdef __bsdi__ |
26 | #define BSD4_2 | |
27 | #endif | |
28 | ||
9889c728 JB |
29 | #ifndef BSD4_2 |
30 | #ifndef USG | |
31 | #include <sys/vlimit.h> | |
32 | #endif /* not USG */ | |
33 | #else /* if BSD4_2 */ | |
34 | #include <sys/time.h> | |
35 | #include <sys/resource.h> | |
36 | #endif /* BSD4_2 */ | |
37 | ||
6fb48933 | 38 | #ifdef emacs |
5399ec5d JB |
39 | /* The important properties of this type are that 1) it's a pointer, and |
40 | 2) arithmetic on it should work as if the size of the object pointed | |
41 | to has a size of 1. */ | |
9889c728 JB |
42 | #ifdef __STDC__ |
43 | typedef void *POINTER; | |
44 | #else | |
45 | typedef char *POINTER; | |
46 | #endif | |
47 | ||
48 | typedef unsigned long SIZE; | |
49 | ||
50 | #ifdef NULL | |
51 | #undef NULL | |
52 | #endif | |
53 | #define NULL ((POINTER) 0) | |
54 | ||
9889c728 | 55 | extern POINTER start_of_data (); |
27050994 JB |
56 | #ifdef DATA_SEG_BITS |
57 | #define EXCEEDS_LISP_PTR(ptr) \ | |
58 | (((unsigned int) (ptr) & ~DATA_SEG_BITS) >> VALBITS) | |
59 | #else | |
6fb48933 | 60 | #define EXCEEDS_LISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS) |
27050994 | 61 | #endif |
9889c728 JB |
62 | |
63 | #ifdef BSD | |
64 | #ifndef DATA_SEG_BITS | |
94d7c01a | 65 | extern char etext; |
9889c728 JB |
66 | #define start_of_data() &etext |
67 | #endif | |
68 | #endif | |
69 | ||
70 | #else /* Not emacs */ | |
94d7c01a | 71 | extern char etext; |
9889c728 JB |
72 | #define start_of_data() &etext |
73 | #endif /* Not emacs */ | |
74 | ||
75 | ||
76 | ||
77 | /* start of data space; can be changed by calling malloc_init */ | |
78 | static POINTER data_space_start; | |
79 | ||
80 | /* Number of bytes of writable memory we can expect to be able to get */ | |
81 | static unsigned int lim_data; | |
82 | ||
9889c728 JB |
83 | #ifdef USG |
84 | ||
c52713b1 | 85 | static void |
9889c728 JB |
86 | get_lim_data () |
87 | { | |
88 | extern long ulimit (); | |
161aa2f8 JB |
89 | |
90 | lim_data = -1; | |
91 | ||
92 | /* Use the ulimit call, if we seem to have it. */ | |
93 | #if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX) | |
9889c728 JB |
94 | lim_data = ulimit (3, 0); |
95 | #endif | |
96 | ||
161aa2f8 JB |
97 | /* If that didn't work, just use the macro's value. */ |
98 | #ifdef ULIMIT_BREAK_VALUE | |
99 | if (lim_data == -1) | |
100 | lim_data = ULIMIT_BREAK_VALUE; | |
101 | #endif | |
102 | ||
9889c728 JB |
103 | lim_data -= (long) data_space_start; |
104 | } | |
105 | ||
106 | #else /* not USG */ | |
c027d070 | 107 | #if !defined(BSD4_2) && !defined(__osf__) |
9889c728 | 108 | |
c52713b1 | 109 | static void |
9889c728 JB |
110 | get_lim_data () |
111 | { | |
112 | lim_data = vlimit (LIM_DATA, -1); | |
113 | } | |
114 | ||
115 | #else /* BSD4_2 */ | |
116 | ||
c52713b1 | 117 | static void |
9889c728 JB |
118 | get_lim_data () |
119 | { | |
120 | struct rlimit XXrlimit; | |
121 | ||
122 | getrlimit (RLIMIT_DATA, &XXrlimit); | |
123 | #ifdef RLIM_INFINITY | |
124 | lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */ | |
125 | #else | |
126 | lim_data = XXrlimit.rlim_cur; /* soft limit */ | |
127 | #endif | |
128 | } | |
129 | #endif /* BSD4_2 */ | |
130 | #endif /* not USG */ |