HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 9889c728 | 1 | /* Includes for memory limit warnings. |
| 5399ec5d | 2 | Copyright (C) 1990, 1992 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 | |
| 8 | the Free Software Foundation; either version 1, or (at your option) | |
| 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 | ||
| 20 | #ifndef BSD4_2 | |
| 21 | #ifndef USG | |
| 22 | #include <sys/vlimit.h> | |
| 23 | #endif /* not USG */ | |
| 24 | #else /* if BSD4_2 */ | |
| 25 | #include <sys/time.h> | |
| 26 | #include <sys/resource.h> | |
| 27 | #endif /* BSD4_2 */ | |
| 28 | ||
| 5399ec5d JB |
29 | /* The important properties of this type are that 1) it's a pointer, and |
| 30 | 2) arithmetic on it should work as if the size of the object pointed | |
| 31 | to has a size of 1. */ | |
| 9889c728 JB |
32 | #ifdef __STDC__ |
| 33 | typedef void *POINTER; | |
| 34 | #else | |
| 35 | typedef char *POINTER; | |
| 36 | #endif | |
| 37 | ||
| 38 | typedef unsigned long SIZE; | |
| 39 | ||
| 40 | #ifdef NULL | |
| 41 | #undef NULL | |
| 42 | #endif | |
| 43 | #define NULL ((POINTER) 0) | |
| 44 | ||
| 45 | #ifdef emacs | |
| 46 | extern POINTER start_of_data (); | |
| 94d7c01a | 47 | #define EXCEEDS_ELISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS) |
| 9889c728 JB |
48 | |
| 49 | #ifdef BSD | |
| 50 | #ifndef DATA_SEG_BITS | |
| 94d7c01a | 51 | extern char etext; |
| 9889c728 JB |
52 | #define start_of_data() &etext |
| 53 | #endif | |
| 54 | #endif | |
| 55 | ||
| 56 | #else /* Not emacs */ | |
| 94d7c01a | 57 | extern char etext; |
| 9889c728 JB |
58 | #define start_of_data() &etext |
| 59 | #endif /* Not emacs */ | |
| 60 | ||
| 61 | ||
| 62 | ||
| 63 | /* start of data space; can be changed by calling malloc_init */ | |
| 64 | static POINTER data_space_start; | |
| 65 | ||
| 66 | /* Number of bytes of writable memory we can expect to be able to get */ | |
| 67 | static unsigned int lim_data; | |
| 68 | ||
| 69 | ||
| 70 | ||
| 71 | #ifdef USG | |
| 72 | ||
| 73 | get_lim_data () | |
| 74 | { | |
| 75 | extern long ulimit (); | |
| 76 | ||
| 77 | #ifdef ULIMIT_BREAK_VALUE | |
| 78 | lim_data = ULIMIT_BREAK_VALUE; | |
| 79 | #else | |
| 80 | lim_data = ulimit (3, 0); | |
| 81 | #endif | |
| 82 | ||
| 83 | lim_data -= (long) data_space_start; | |
| 84 | } | |
| 85 | ||
| 86 | #else /* not USG */ | |
| 87 | #ifndef BSD4_2 | |
| 88 | ||
| 89 | get_lim_data () | |
| 90 | { | |
| 91 | lim_data = vlimit (LIM_DATA, -1); | |
| 92 | } | |
| 93 | ||
| 94 | #else /* BSD4_2 */ | |
| 95 | ||
| 96 | get_lim_data () | |
| 97 | { | |
| 98 | struct rlimit XXrlimit; | |
| 99 | ||
| 100 | getrlimit (RLIMIT_DATA, &XXrlimit); | |
| 101 | #ifdef RLIM_INFINITY | |
| 102 | lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */ | |
| 103 | #else | |
| 104 | lim_data = XXrlimit.rlim_cur; /* soft limit */ | |
| 105 | #endif | |
| 106 | } | |
| 107 | #endif /* BSD4_2 */ | |
| 108 | #endif /* not USG */ |