/* Includes for memory limit warnings.
- Copyright (C) 1990, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#ifdef MSDOS
+#include <dpmi.h>
+extern int etext;
+#endif
+
+/* Some systems need this before <sys/resource.h>. */
+#include <sys/types.h>
+
+#ifdef _LIBC
+
+#include <sys/resource.h>
+#define BSD4_2 /* Tell code below to use getrlimit. */
+
+/* Old Linux startup code won't define __data_start. */
+extern int etext, __data_start; weak_extern (__data_start)
+#define start_of_data() (&__data_start ?: &etext)
+
+#else /* not _LIBC */
+
+#if defined (__osf__) && (defined (__mips) || defined (mips) || defined(__alpha))
+#include <sys/time.h>
+#include <sys/resource.h>
+#endif
+
+#ifdef __bsdi__
+#define BSD4_2
+#endif
+
+#ifdef CYGWIN
+#define BSD4_2
+#endif
#ifndef BSD4_2
#ifndef USG
+#ifndef MSDOS
+#ifndef WINDOWSNT
#include <sys/vlimit.h>
+#endif /* not WINDOWSNT */
+#endif /* not MSDOS */
#endif /* not USG */
#else /* if BSD4_2 */
#include <sys/time.h>
/* The important properties of this type are that 1) it's a pointer, and
2) arithmetic on it should work as if the size of the object pointed
to has a size of 1. */
-#ifdef __STDC__
-typedef void *POINTER;
-#else
-typedef char *POINTER;
-#endif
+typedef POINTER_TYPE *POINTER;
typedef unsigned long SIZE;
#define NULL ((POINTER) 0)
extern POINTER start_of_data ();
-#define EXCEEDS_LISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS)
+#ifdef DATA_SEG_BITS
+#define EXCEEDS_LISP_PTR(ptr) \
+ (((EMACS_UINT) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
+#else
+#define EXCEEDS_LISP_PTR(ptr) ((EMACS_UINT) (ptr) >> VALBITS)
+#endif
-#ifdef BSD
+#ifdef DATA_START
+#define start_of_data() ((char *)DATA_START)
+#endif
+
+#ifdef BSD_SYSTEM
#ifndef DATA_SEG_BITS
+#ifndef DATA_START
extern char etext;
#define start_of_data() &etext
#endif
#endif
+#endif
-#else /* Not emacs */
+#else /* not emacs */
extern char etext;
#define start_of_data() &etext
-#endif /* Not emacs */
+#endif /* not emacs */
+
+#endif /* not _LIBC */
-
/* start of data space; can be changed by calling malloc_init */
static POINTER data_space_start;
/* Number of bytes of writable memory we can expect to be able to get */
-static unsigned int lim_data;
+static unsigned long lim_data;
-#ifndef emacs
-#define start_of_data (void *) &_end
-#endif
+#ifdef NO_LIM_DATA
+static void
+get_lim_data ()
+{
+ lim_data = -1;
+}
+#else /* not NO_LIM_DATA */
#ifdef USG
+static void
get_lim_data ()
{
extern long ulimit ();
-
-#ifdef ULIMIT_BREAK_VALUE
- lim_data = ULIMIT_BREAK_VALUE;
-#else
+
+ lim_data = -1;
+
+ /* Use the ulimit call, if we seem to have it. */
+#if !defined (ULIMIT_BREAK_VALUE) || defined (GNU_LINUX)
lim_data = ulimit (3, 0);
#endif
+ /* If that didn't work, just use the macro's value. */
+#ifdef ULIMIT_BREAK_VALUE
+ if (lim_data == -1)
+ lim_data = ULIMIT_BREAK_VALUE;
+#endif
+
lim_data -= (long) data_space_start;
}
#else /* not USG */
-#ifndef BSD4_2
+#ifdef WINDOWSNT
+
+static void
+get_lim_data ()
+{
+ extern unsigned long reserved_heap_size;
+ lim_data = reserved_heap_size;
+}
+#else
+#if !defined (BSD4_2) && !defined (__osf__)
+
+#ifdef MSDOS
+void
+get_lim_data ()
+{
+ _go32_dpmi_meminfo info;
+
+ _go32_dpmi_get_free_memory_information (&info);
+ lim_data = info.available_memory;
+}
+#else /* not MSDOS */
+static void
get_lim_data ()
{
lim_data = vlimit (LIM_DATA, -1);
}
+#endif /* not MSDOS */
#else /* BSD4_2 */
+static void
get_lim_data ()
{
struct rlimit XXrlimit;
#endif
}
#endif /* BSD4_2 */
+#endif /* not WINDOWSNT */
#endif /* not USG */
+#endif /* not NO_LIM_DATA */