1 /* Includes for memory limit warnings.
2 Copyright (C) 1990, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
4 This file is part of XEmacs.
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
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
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. */
21 /* Synched up with: FSF 19.30. */
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. */
30 #ifndef INCLUDED_mem_limits_h_
31 #define INCLUDED_mem_limits_h_
45 /* Some systems need this before <sys/resource.h>. */
46 #include <sys/types.h>
50 #include <sys/resource.h>
51 #define BSD4_2 /* Tell code below to use getrlimit. */
53 /* Old Linux startup code won't define __data_start. */
54 extern int etext, __data_start; weak_symbol (__data_start)
55 #define start_of_data() (&__data_start ?: &etext)
57 #else /* not GNU libc */
59 #if defined (__osf__) && (defined (__mips) || defined (mips) || defined (__alpha))
61 #include <sys/resource.h>
64 #if defined(__bsdi__) || defined(__NetBSD__) || defined(__linux__) || defined(__OpenBSD__)
65 #if defined(__linux__) && defined (powerpc) /*Added by Fukui*/
66 #else /*Added by Fukui*/
68 #endif /*Added by Fukui*/
76 #if defined(__linux__) && defined(powerpc) /*Added Kaoru Fukui*/
77 #else /*Added Kaoru Fukui*/
78 #include <sys/vlimit.h>
79 #endif /*Added by Fukui*/
80 #endif /* not __CYGWIN32__ */
81 #endif /* not WINDOWSNT */
82 #endif /* not MSDOS */
86 #include <sys/resource.h>
90 /* The important properties of this type are that 1) it's a pointer, and
91 2) arithmetic on it should work as if the size of the object pointed
92 to has a size of 1. */
94 typedef void *POINTER;
96 typedef char *POINTER;
100 typedef unsigned long SIZE;
103 extern POINTER start_of_data (void);
104 #define EXCEEDS_LISP_PTR(ptr) 0
108 #define start_of_data() &etext
111 #else /* not emacs */
113 #define start_of_data() &etext
114 #endif /* not emacs */
116 #endif /* not _LIBC */
120 /* start of data space; can be changed by calling malloc_init */
121 static POINTER data_space_start;
123 /* Number of bytes of writable memory we can expect to be able to get */
124 extern unsigned int lim_data;
126 #if defined (HEAP_IN_DATA) && !defined(PDUMP)
127 extern unsigned long static_heap_size;
128 extern int initialized;
134 lim_data = (unsigned int) -1; /* static_heap_size; */
138 lim_data = (unsigned int) -1;
146 lim_data = (unsigned int) -1;
148 #else /* not NO_LIM_DATA */
155 lim_data = (unsigned int) -1;
157 /* Use the ulimit call, if we seem to have it. */
158 #if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX)
159 lim_data = ulimit (3, 0);
162 /* If that didn't work, just use the macro's value. */
163 #ifdef ULIMIT_BREAK_VALUE
164 if (lim_data == (unsigned int) -1)
165 lim_data = ULIMIT_BREAK_VALUE;
168 lim_data -= (long) data_space_start;
172 #if defined( WINDOWSNT )
177 extern unsigned long data_region_size;
178 lim_data = data_region_size;
182 #if !defined (BSD4_2) && !defined (__osf__)
188 _go32_dpmi_meminfo info;
190 _go32_dpmi_get_free_memory_information (&info);
191 lim_data = info.available_memory;
193 #else /* not MSDOS */
197 lim_data = vlimit (LIM_DATA, -1);
199 #endif /* not MSDOS */
206 struct rlimit XXrlimit;
208 getrlimit (RLIMIT_DATA, &XXrlimit);
210 lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */
212 lim_data = XXrlimit.rlim_cur; /* soft limit */
216 #endif /* not WINDOWSNT */
218 #endif /* not NO_LIM_DATA */
219 #endif /* not HEAP_IN_DATA */
221 #endif /* INCLUDED_mem_limits_h_ */