X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/c52713b17b0446ad112cfda886151f5d7fcdf6c0..95b1abcfafe8a366a75635f5fa4b4fa1e79f2964:/src/mem-limits.h

diff --git a/src/mem-limits.h b/src/mem-limits.h
index 0150b83b1e..d811968b13 100644
--- a/src/mem-limits.h
+++ b/src/mem-limits.h
@@ -1,12 +1,13 @@
 /* Includes for memory limit warnings.
-   Copyright (C) 1990, 1992 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1993, 1994, 1995, 1996, 2001, 2002, 2003, 2004,
+                 2005, 2006, 2007, 2008, 2009, 2010  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 1, 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
@@ -14,12 +15,47 @@ 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>.  */
+#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 */
+
+#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 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>
@@ -30,11 +66,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 /* 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;
 
@@ -44,66 +76,35 @@ typedef unsigned long SIZE;
 #define NULL ((POINTER) 0)
 
 extern POINTER start_of_data ();
-#define EXCEEDS_LISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS)
+#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 */ 
+#else  /* not emacs */
 extern char etext;
 #define start_of_data() &etext
-#endif /* Not emacs */
-
-  
+#endif /* not emacs */
 
-/* start of data space; can be changed by calling malloc_init */
-static POINTER data_space_start;
+#endif /* not _LIBC */
 
-/* Number of bytes of writable memory we can expect to be able to get */
-static unsigned int lim_data;
 
-#ifdef USG
-
-static void
-get_lim_data ()
-{
-  extern long ulimit ();
-    
-#ifdef ULIMIT_BREAK_VALUE
-  lim_data = ULIMIT_BREAK_VALUE;
-#else
-  lim_data = ulimit (3, 0);
-#endif
-
-  lim_data -= (long) data_space_start;
-}
-
-#else /* not USG */
-#ifndef BSD4_2
-
-static void
-get_lim_data ()
-{
-  lim_data = vlimit (LIM_DATA, -1);
-}
-
-#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 USG */
+/* arch-tag: fe39244e-e54f-4208-b7aa-02556f7841c5
+   (do not change this comment) */