Commit | Line | Data |
---|---|---|
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 | ||
b1814de2 RM |
20 | #ifdef _LIBC |
21 | ||
22 | #include <sys/resource.h> | |
ab8fb193 | 23 | #define BSD4_2 /* Tell code below to use getrlimit. */ |
b1814de2 RM |
24 | |
25 | #else | |
26 | ||
c027d070 JB |
27 | #if defined(__osf__) && (defined(__mips) || defined(mips)) |
28 | #include <sys/time.h> | |
29 | #include <sys/resource.h> | |
30 | #endif | |
31 | ||
cd1168e1 RS |
32 | #ifdef __bsdi__ |
33 | #define BSD4_2 | |
34 | #endif | |
35 | ||
9889c728 JB |
36 | #ifndef BSD4_2 |
37 | #ifndef USG | |
38 | #include <sys/vlimit.h> | |
39 | #endif /* not USG */ | |
40 | #else /* if BSD4_2 */ | |
41 | #include <sys/time.h> | |
42 | #include <sys/resource.h> | |
43 | #endif /* BSD4_2 */ | |
44 | ||
b1814de2 RM |
45 | #endif /* _LIBC */ |
46 | ||
6fb48933 | 47 | #ifdef emacs |
5399ec5d JB |
48 | /* The important properties of this type are that 1) it's a pointer, and |
49 | 2) arithmetic on it should work as if the size of the object pointed | |
50 | to has a size of 1. */ | |
9889c728 JB |
51 | #ifdef __STDC__ |
52 | typedef void *POINTER; | |
53 | #else | |
54 | typedef char *POINTER; | |
55 | #endif | |
56 | ||
57 | typedef unsigned long SIZE; | |
58 | ||
59 | #ifdef NULL | |
60 | #undef NULL | |
61 | #endif | |
62 | #define NULL ((POINTER) 0) | |
63 | ||
9889c728 | 64 | extern POINTER start_of_data (); |
27050994 JB |
65 | #ifdef DATA_SEG_BITS |
66 | #define EXCEEDS_LISP_PTR(ptr) \ | |
67 | (((unsigned int) (ptr) & ~DATA_SEG_BITS) >> VALBITS) | |
68 | #else | |
6fb48933 | 69 | #define EXCEEDS_LISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS) |
27050994 | 70 | #endif |
9889c728 JB |
71 | |
72 | #ifdef BSD | |
73 | #ifndef DATA_SEG_BITS | |
94d7c01a | 74 | extern char etext; |
9889c728 JB |
75 | #define start_of_data() &etext |
76 | #endif | |
77 | #endif | |
78 | ||
79 | #else /* Not emacs */ | |
94d7c01a | 80 | extern char etext; |
9889c728 JB |
81 | #define start_of_data() &etext |
82 | #endif /* Not emacs */ | |
83 | ||
84 | ||
85 | ||
86 | /* start of data space; can be changed by calling malloc_init */ | |
87 | static POINTER data_space_start; | |
88 | ||
89 | /* Number of bytes of writable memory we can expect to be able to get */ | |
90 | static unsigned int lim_data; | |
91 | ||
9889c728 JB |
92 | #ifdef USG |
93 | ||
c52713b1 | 94 | static void |
9889c728 JB |
95 | get_lim_data () |
96 | { | |
97 | extern long ulimit (); | |
161aa2f8 JB |
98 | |
99 | lim_data = -1; | |
100 | ||
101 | /* Use the ulimit call, if we seem to have it. */ | |
102 | #if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX) | |
9889c728 JB |
103 | lim_data = ulimit (3, 0); |
104 | #endif | |
105 | ||
161aa2f8 JB |
106 | /* If that didn't work, just use the macro's value. */ |
107 | #ifdef ULIMIT_BREAK_VALUE | |
108 | if (lim_data == -1) | |
109 | lim_data = ULIMIT_BREAK_VALUE; | |
110 | #endif | |
111 | ||
9889c728 JB |
112 | lim_data -= (long) data_space_start; |
113 | } | |
114 | ||
115 | #else /* not USG */ | |
c027d070 | 116 | #if !defined(BSD4_2) && !defined(__osf__) |
9889c728 | 117 | |
c52713b1 | 118 | static void |
9889c728 JB |
119 | get_lim_data () |
120 | { | |
121 | lim_data = vlimit (LIM_DATA, -1); | |
122 | } | |
123 | ||
124 | #else /* BSD4_2 */ | |
125 | ||
c52713b1 | 126 | static void |
9889c728 JB |
127 | get_lim_data () |
128 | { | |
129 | struct rlimit XXrlimit; | |
130 | ||
131 | getrlimit (RLIMIT_DATA, &XXrlimit); | |
132 | #ifdef RLIM_INFINITY | |
133 | lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */ | |
134 | #else | |
135 | lim_data = XXrlimit.rlim_cur; /* soft limit */ | |
136 | #endif | |
137 | } | |
138 | #endif /* BSD4_2 */ | |
139 | #endif /* not USG */ |