src/mem-limits.h

   1 /* Includes for memory limit warnings.
   2    Copyright (C) 1990, 1993, 1994, 1995, 1996, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifdef MSDOS
  21 #include <dpmi.h>
  22 extern int etext;
  23 #endif
  24
  25 /* Some systems need this before <sys/resource.h>.  */
  26 #include <sys/types.h>
  27
  28 #ifdef HAVE_SYS_RESOURCE_H
  29 # include <sys/time.h>
  30 # include <sys/resource.h>
  31 #else
  32 # if HAVE_SYS_VLIMIT_H
  33 #  include <sys/vlimit.h>       /* Obsolete, says glibc */
  34 # endif
  35 #endif
  36
  37 #ifdef CYGWIN
  38 #define BSD4_2
  39 #endif
  40
  41 #ifdef BSD4_2
  42 #include <sys/time.h>
  43 #include <sys/resource.h>
  44 #endif /* BSD4_2 */
  45
  46 /* The important properties of this type are that 1) it's a pointer, and
  47    2) arithmetic on it should work as if the size of the object pointed
  48    to has a size of 1.  */
  49 typedef POINTER_TYPE *POINTER;
  50
  51 typedef unsigned long SIZE;
  52
  53 #ifdef NULL
  54 #undef NULL
  55 #endif
  56 #define NULL ((POINTER) 0)
  57
  58 extern POINTER start_of_data (void);
  59 #if defined USE_LSB_TAG
  60 #define EXCEEDS_LISP_PTR(ptr) 0
  61 #elif defined DATA_SEG_BITS
  62 #define EXCEEDS_LISP_PTR(ptr) \
  63   (((EMACS_UINT) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
  64 #else
  65 #define EXCEEDS_LISP_PTR(ptr) ((EMACS_UINT) (ptr) >> VALBITS)
  66 #endif
  67
  68 /* arch-tag: fe39244e-e54f-4208-b7aa-02556f7841c5
  69    (do not change this comment) */