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_
41 /* Some systems need this before <sys/resource.h>. */
42 #include <sys/types.h>
46 #include <sys/resource.h>
47 #define BSD4_2 /* Tell code below to use getrlimit. */
49 /* Old Linux startup code won't define __data_start. */
50 extern int etext, __data_start; weak_symbol (__data_start)
51 #define start_of_data() (&__data_start ?: &etext)
53 #else /* not GNU libc */
55 #if defined (__osf__) && (defined (__mips) || defined (mips) || defined (__alpha))
57 #include <sys/resource.h>
60 #if defined(__bsdi__) || defined(__NetBSD__) || defined(__linux__) || defined(__OpenBSD__)
61 #if defined(__linux__) && defined (powerpc) /*Added by Fukui*/
62 #else /*Added by Fukui*/
64 #endif /*Added by Fukui*/
71 #if defined(__linux__) && defined(powerpc) /*Added Kaoru Fukui*/
72 #else /*Added Kaoru Fukui*/
73 #include <sys/vlimit.h>
74 #endif /*Added by Fukui*/
75 #endif /* not CYGWIN */
76 #endif /* not WIN32_NATIVE */
80 #include <sys/resource.h>
84 /* The important properties of this type are that 1) it's a pointer, and
85 2) arithmetic on it should work as if the size of the object pointed
86 to has a size of 1. */
88 typedef void *POINTER;
90 typedef char *POINTER;
94 typedef unsigned long SIZE;
97 extern POINTER start_of_data (void);
98 #define EXCEEDS_LISP_PTR(ptr) 0
102 #define start_of_data() &etext
105 #else /* not emacs */
107 #define start_of_data() &etext
108 #endif /* not emacs */
110 #endif /* not _LIBC */
114 /* start of data space; can be changed by calling malloc_init */
115 static POINTER data_space_start;
117 /* Number of bytes of writable memory we can expect to be able to get */
118 extern unsigned int lim_data;
120 #if defined (HEAP_IN_DATA) && !defined(PDUMP)
121 extern unsigned long static_heap_size;
122 extern int initialized;
128 lim_data = (unsigned int) -1; /* static_heap_size; */
132 lim_data = (unsigned int) -1;
140 lim_data = (unsigned int) -1;
142 #else /* not NO_LIM_DATA */
149 lim_data = (unsigned int) -1;
151 /* Use the ulimit call, if we seem to have it. */
152 #if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX)
153 lim_data = ulimit (3, 0);
156 /* If that didn't work, just use the macro's value. */
157 #ifdef ULIMIT_BREAK_VALUE
158 if (lim_data == (unsigned int) -1)
159 lim_data = ULIMIT_BREAK_VALUE;
162 lim_data -= (long) data_space_start;
166 #if defined( WIN32_NATIVE )
171 extern unsigned long data_region_size;
172 lim_data = data_region_size;
176 #if !defined (BSD4_2) && !defined (__osf__)
181 lim_data = vlimit (LIM_DATA, -1);
189 struct rlimit XXrlimit;
191 getrlimit (RLIMIT_DATA, &XXrlimit);
193 lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */
195 lim_data = XXrlimit.rlim_cur; /* soft limit */
199 #endif /* not WIN32_NATIVE */
201 #endif /* not NO_LIM_DATA */
202 #endif /* not HEAP_IN_DATA */
204 #endif /* INCLUDED_mem_limits_h_ */