mfbt/WindowsVersion.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_WindowsVersion_h
   8 #define mozilla_WindowsVersion_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include <stdint.h>
  12 #include <windows.h>
  13
  14 namespace mozilla {
  15
  16 inline bool
  17 IsWindowsVersionOrLater(uint32_t aVersion)
  18 {
  19   static uint32_t minVersion = 0;
  20   static uint32_t maxVersion = UINT32_MAX;
  21
  22   if (minVersion >= aVersion) {
  23     return true;
  24   }
  25
  26   if (aVersion >= maxVersion) {
  27     return false;
  28   }
  29
  30   OSVERSIONINFOEX info;
  31   ZeroMemory(&info, sizeof(OSVERSIONINFOEX));
  32   info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
  33   info.dwMajorVersion = aVersion >> 24;
  34   info.dwMinorVersion = (aVersion >> 16) & 0xFF;
  35   info.wServicePackMajor = (aVersion >> 8) & 0xFF;
  36   info.wServicePackMinor = aVersion & 0xFF;
  37
  38   DWORDLONG conditionMask = 0;
  39   VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
  40   VER_SET_CONDITION(conditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
  41   VER_SET_CONDITION(conditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
  42   VER_SET_CONDITION(conditionMask, VER_SERVICEPACKMINOR, VER_GREATER_EQUAL);
  43
  44   if (VerifyVersionInfo(&info,
  45                         VER_MAJORVERSION | VER_MINORVERSION |
  46                         VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR,
  47                         conditionMask)) {
  48     minVersion = aVersion;
  49     return true;
  50   }
  51
  52   maxVersion = aVersion;
  53   return false;
  54 }
  55
  56 inline bool
  57 IsWindowsBuildOrLater(uint32_t aBuild)
  58 {
  59   static uint32_t minBuild = 0;
  60   static uint32_t maxBuild = UINT32_MAX;
  61
  62   if (minBuild >= aBuild) {
  63     return true;
  64   }
  65
  66   if (aBuild >= maxBuild) {
  67     return false;
  68   }
  69
  70   OSVERSIONINFOEX info;
  71   ZeroMemory(&info, sizeof(OSVERSIONINFOEX));
  72   info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
  73   info.dwBuildNumber = aBuild;
  74
  75   DWORDLONG conditionMask = 0;
  76   VER_SET_CONDITION(conditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
  77
  78   if (VerifyVersionInfo(&info, VER_BUILDNUMBER, conditionMask)) {
  79     minBuild = aBuild;
  80     return true;
  81   }
  82
  83   maxBuild = aBuild;
  84   return false;
  85 }
  86
  87 #if defined(_M_X64) || defined(_M_AMD64)
  88 // We support only Win7 or later on Win64.
  89 MOZ_ALWAYS_INLINE bool
  90 IsXPSP3OrLater()
  91 {
  92   return true;
  93 }
  94
  95 MOZ_ALWAYS_INLINE bool
  96 IsWin2003OrLater()
  97 {
  98   return true;
  99 }
 100
 101 MOZ_ALWAYS_INLINE bool
 102 IsWin2003SP2OrLater()
 103 {
 104   return true;
 105 }
 106
 107 MOZ_ALWAYS_INLINE bool
 108 IsVistaOrLater()
 109 {
 110   return true;
 111 }
 112
 113 MOZ_ALWAYS_INLINE bool
 114 IsVistaSP1OrLater()
 115 {
 116   return true;
 117 }
 118
 119 MOZ_ALWAYS_INLINE bool
 120 IsWin7OrLater()
 121 {
 122   return true;
 123 }
 124 #else
 125 MOZ_ALWAYS_INLINE bool
 126 IsXPSP3OrLater()
 127 {
 128   return IsWindowsVersionOrLater(0x05010300ul);
 129 }
 130
 131 MOZ_ALWAYS_INLINE bool
 132 IsWin2003OrLater()
 133 {
 134   return IsWindowsVersionOrLater(0x05020000ul);
 135 }
 136
 137 MOZ_ALWAYS_INLINE bool
 138 IsWin2003SP2OrLater()
 139 {
 140   return IsWindowsVersionOrLater(0x05020200ul);
 141 }
 142
 143 MOZ_ALWAYS_INLINE bool
 144 IsVistaOrLater()
 145 {
 146   return IsWindowsVersionOrLater(0x06000000ul);
 147 }
 148
 149 MOZ_ALWAYS_INLINE bool
 150 IsVistaSP1OrLater()
 151 {
 152   return IsWindowsVersionOrLater(0x06000100ul);
 153 }
 154
 155 MOZ_ALWAYS_INLINE bool
 156 IsWin7OrLater()
 157 {
 158   return IsWindowsVersionOrLater(0x06010000ul);
 159 }
 160 #endif
 161
 162 MOZ_ALWAYS_INLINE bool
 163 IsWin7SP1OrLater()
 164 {
 165   return IsWindowsVersionOrLater(0x06010100ul);
 166 }
 167
 168 MOZ_ALWAYS_INLINE bool
 169 IsWin8OrLater()
 170 {
 171   return IsWindowsVersionOrLater(0x06020000ul);
 172 }
 173
 174 MOZ_ALWAYS_INLINE bool
 175 IsNotWin7PreRTM()
 176 {
 177   return IsWin7SP1OrLater() || !IsWin7OrLater() ||
 178          IsWindowsBuildOrLater(7600);
 179 }
 180
 181 } // namespace mozilla
 182
 183 #endif /* mozilla_WindowsVersion_h */