(Fmake_indirect_buffer, Fset_buffer_major_mode, Fpop_to_buffer,

[gnu-emacs] / src / mem-limits.h

diff --git a/src/mem-limits.h b/src/mem-limits.h
index d8a3d88c471133d0b27b295542695d555720c4db..3bb40dff56908c6f99e38038338530c5126cee9d 100644 (file)
--- a/src/mem-limits.h
+++ b/src/mem-limits.h
@@ -1,5 +1,5 @@
 /* Includes for memory limit warnings.
-   Copyright (C) 1990, 1993 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1993, 1994, 1995 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -17,14 +17,25 @@ 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.  */
 
+#ifdef MSDOS
+#include <dpmi.h>
+#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.  */
 
-#else
+/* Old Linux startup code won't define __data_start.  */
+extern int etext, __data_start; weak_symbol (__data_start)
+#define start_of_data()        (&__data_start ?: &etext)
+
+#else /* not _LIBC */
 
-#if defined(__osf__) && (defined(__mips) || defined(mips))
+#if defined (__osf__) && (defined (__mips) || defined (mips) || defined(__alpha))
 #include <sys/time.h>
 #include <sys/resource.h>
 #endif
@@ -35,15 +46,17 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #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>
 #include <sys/resource.h>
 #endif /* BSD4_2 */
 
-#endif /* _LIBC */
-
 #ifdef emacs
 /* 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
@@ -64,9 +77,9 @@ typedef unsigned long SIZE;
 extern POINTER start_of_data ();
 #ifdef DATA_SEG_BITS
 #define EXCEEDS_LISP_PTR(ptr) \
-  (((unsigned int) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
+  (((EMACS_UINT) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
 #else
-#define EXCEEDS_LISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS)
+#define EXCEEDS_LISP_PTR(ptr) ((EMACS_UINT) (ptr) >> VALBITS)
 #endif
 
 #ifdef BSD
@@ -76,12 +89,13 @@ extern char etext;
 #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;
@@ -89,6 +103,14 @@ 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
@@ -113,13 +135,34 @@ get_lim_data ()
 }
 
 #else /* not USG */
-#if !defined(BSD4_2) && !defined(__osf__)
+#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 */
 
@@ -136,4 +179,6 @@ get_lim_data ()
 #endif
 }
 #endif /* BSD4_2 */
+#endif /* not WINDOWSNT */
 #endif /* not USG */
+#endif /* not NO_LIM_DATA */