src/mem-limits.h

   1 /* Includes for memory limit warnings.
   2    Copyright (C) 1990, 1993-1996, 2001-2012  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifdef MSDOS
  20 #include <dpmi.h>
  21 extern int etext;
  22 #endif
  23
  24 /* Some systems need this before <sys/resource.h>.  */
  25 #include <sys/types.h>
  26
  27 #ifdef HAVE_SYS_RESOURCE_H
  28 # include <sys/time.h>
  29 # include <sys/resource.h>
  30 #else
  31 # if HAVE_SYS_VLIMIT_H
  32 #  include <sys/vlimit.h>       /* Obsolete, says glibc */
  33 # endif
  34 #endif
  35
  36 extern char *start_of_data (void);
  37 #if defined USE_LSB_TAG || UINTPTR_MAX >> VALBITS == 0
  38 #define EXCEEDS_LISP_PTR(ptr) 0
  39 #elif defined DATA_SEG_BITS
  40 #define EXCEEDS_LISP_PTR(ptr) \
  41   (((uintptr_t) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
  42 #else
  43 #define EXCEEDS_LISP_PTR(ptr) ((uintptr_t) (ptr) >> VALBITS)
  44 #endif