X-Git-Url: https://git.hcoop.net/bpt/emacs.git/blobdiff_plain/6c6b28ea7f9fa815972f6308ab3cbb336516fecb..a53cfbe58781e8f967d298d937e34efa3db93c1d:/src/mem-limits.h

diff --git a/src/mem-limits.h b/src/mem-limits.h
index c63e0b4839..bf57b555c6 100644
--- a/src/mem-limits.h
+++ b/src/mem-limits.h
@@ -1,12 +1,13 @@
 /* Includes for memory limit warnings.
-   Copyright (C) 1990, 1993, 1994, 1995 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1993, 1994, 1995, 1996, 2001, 2002, 2003, 2004,
+                 2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
-GNU Emacs is free software; you can redistribute it and/or modify
+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 2, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -14,11 +15,11 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 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.  */
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifdef MSDOS
 #include <dpmi.h>
+extern int etext;
 #endif
 
 /* Some systems need this before <sys/resource.h>.  */
@@ -30,17 +31,21 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define BSD4_2			/* Tell code below to use getrlimit.  */
 
 /* Old Linux startup code won't define __data_start.  */
-extern int __data_start; weak_symbol (__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>
+#ifdef HAVE_SYS_RESOURCE_H
+# include <sys/time.h>
+# include <sys/resource.h>
+#else
+# if HAVE_SYS_VLIMIT_H
+#  include <sys/vlimit.h>	/* Obsolete, says glibc */
+# endif
 #endif
 
-#ifdef __bsdi__
+#ifdef CYGWIN
 #define BSD4_2
 #endif
 
@@ -61,11 +66,7 @@ extern int __data_start; weak_symbol (__data_start)
 /* 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;
 
@@ -75,19 +76,27 @@ typedef unsigned long SIZE;
 #define NULL ((POINTER) 0)
 
 extern POINTER start_of_data ();
-#ifdef DATA_SEG_BITS
+#if defined USE_LSB_TAG
+#define EXCEEDS_LISP_PTR(ptr) 0
+#elif defined 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 */
 extern char etext;
@@ -97,88 +106,5 @@ extern char etext;
 #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;
-
-#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 ();
-
-  lim_data = -1;
-
-  /* Use the ulimit call, if we seem to have it.  */
-#if !defined (ULIMIT_BREAK_VALUE) || defined (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 */
-#ifdef WINDOWSNT
-
-static void
-get_lim_data ()
-{
-  extern unsigned long data_region_size;
-  lim_data = data_region_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;
-
-  getrlimit (RLIMIT_DATA, &XXrlimit);
-#ifdef RLIM_INFINITY
-  lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */
-#else
-  lim_data = XXrlimit.rlim_cur;	/* soft limit */
-#endif
-}
-#endif /* BSD4_2 */
-#endif /* not WINDOWSNT */
-#endif /* not USG */
-#endif /* not NO_LIM_DATA */
+/* arch-tag: fe39244e-e54f-4208-b7aa-02556f7841c5
+   (do not change this comment) */