src/w32common.h

   1 /* Common functions for Microsoft Windows builds of Emacs
   2    Copyright (C) 2012-2019 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 (at
   9 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 <https://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #ifndef W32COMMON_H
  22 #define W32COMMON_H
  23
  24 #include <windows.h>
  25
  26 #define ROUND_UP(p, align)   (((DWORD_PTR)(p) + (align)-1) & ~((DWORD_PTR)(align)-1))
  27 #define ROUND_DOWN(p, align) ((DWORD_PTR)(p) & ~((DWORD_PTR)(align)-1))
  28
  29 #define get_page_size()                 sysinfo_cache.dwPageSize
  30 #define get_allocation_unit()           sysinfo_cache.dwAllocationGranularity
  31 #define get_processor_type()            sysinfo_cache.dwProcessorType
  32 #define get_w32_major_version()         w32_major_version
  33 #define get_w32_minor_version()         w32_minor_version
  34
  35 extern SYSTEM_INFO    sysinfo_cache;
  36 extern OSVERSIONINFO  osinfo_cache;
  37 extern DWORD_PTR      syspage_mask;
  38
  39 extern int            w32_major_version;
  40 extern int            w32_minor_version;
  41 extern int            w32_build_number;
  42
  43 enum {
  44   OS_9X = 1,
  45   OS_NT
  46 };
  47
  48 extern int os_subtype;
  49
  50 /* Cache system info, e.g., the NT page size.  */
  51 extern void cache_system_info (void);
  52
  53 #endif /* W32COMMON_H */