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authorDaniel Wilhelm <daniel@wili.li>2015-10-02 14:55:46 +0200
committerDaniel Wilhelm <daniel@wili.li>2015-10-02 14:55:46 +0200
commitb32d1e948b32a8f7607ebc30f10dda903426f63c (patch)
tree7fa78f18308671970198981b650e237bcd84957e /zen/win_ver.h
parent7.0 (diff)
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7.1
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diff --git a/zen/win_ver.h b/zen/win_ver.h
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-// **************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
-// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
-// **************************************************************************
-
-#ifndef WINDOWS_VERSION_HEADER_238470348254325
-#define WINDOWS_VERSION_HEADER_238470348254325
-
-#include <cassert>
-#include <utility>
-#include "win.h" //includes "windows.h"
-#include "build_info.h"
-#include "dll.h"
-
-namespace zen
-{
-struct OsVersion
-{
- OsVersion() : major(), minor() {}
- OsVersion(DWORD high, DWORD low) : major(high), minor(low) {}
-
- DWORD major;
- DWORD minor;
-};
-inline bool operator< (const OsVersion& lhs, const OsVersion& rhs) { return lhs.major != rhs.major ? lhs.major < rhs.major : lhs.minor < rhs.minor; }
-inline bool operator==(const OsVersion& lhs, const OsVersion& rhs) { return lhs.major == rhs.major && lhs.minor == rhs.minor; }
-
-
-//version overview: http://msdn.microsoft.com/en-us/library/ms724834(VS.85).aspx
-const OsVersion osVersionWin10 (10, 0);
-const OsVersion osVersionWin81 (6, 3);
-const OsVersion osVersionWin8 (6, 2);
-const OsVersion osVersionWin7 (6, 1);
-const OsVersion osVersionWinVista (6, 0);
-const OsVersion osVersionWinServer2003(5, 2);
-const OsVersion osVersionWinXp (5, 1);
-const OsVersion osVersionWin2000 (5, 0);
-
-/*
- NOTE: there are two basic APIs to check Windows version: (empiric study following)
- GetVersionEx -> reports version considering compatibility mode (and compatibility setting in app manifest since Windows 8.1)
- VerifyVersionInfo -> always reports *real* Windows Version
- *) Win10 Technical preview caveat: VerifyVersionInfo returns 6.3 unless manifest entry is added!!!
-*/
-
-//GetVersionEx()-based APIs:
-OsVersion getOsVersion();
-inline bool win81OrLater () { using namespace std::rel_ops; return getOsVersion() >= osVersionWin81; }
-inline bool win8OrLater () { using namespace std::rel_ops; return getOsVersion() >= osVersionWin8; }
-inline bool win7OrLater () { using namespace std::rel_ops; return getOsVersion() >= osVersionWin7; }
-inline bool vistaOrLater () { using namespace std::rel_ops; return getOsVersion() >= osVersionWinVista; }
-inline bool winServer2003orLater() { using namespace std::rel_ops; return getOsVersion() >= osVersionWinServer2003; }
-inline bool winXpOrLater () { using namespace std::rel_ops; return getOsVersion() >= osVersionWinXp; }
-
-//VerifyVersionInfo()-based APIs:
-bool isRealOsVersion(const OsVersion& ver);
-
-
-bool runningWOW64();
-bool running64BitWindows();
-
-
-
-
-//######################### implementation #########################
-inline
-OsVersion getOsVersion()
-{
- OSVERSIONINFO osvi = {};
- osvi.dwOSVersionInfoSize = sizeof(osvi);
-#ifdef _MSC_VER
-#pragma warning(suppress: 4996) //"'GetVersionExW': was declared deprecated"
-#endif
- if (!::GetVersionEx(&osvi)) //38 ns per call! (yes, that's nano!) -> we do NOT miss C++11 thread-safe statics right now...
- {
- assert(false);
- return OsVersion();
- }
- return OsVersion(osvi.dwMajorVersion, osvi.dwMinorVersion);
-}
-
-
-inline
-bool isRealOsVersion(const OsVersion& ver)
-{
- OSVERSIONINFOEX verInfo = {};
- verInfo.dwOSVersionInfoSize = sizeof(verInfo);
- verInfo.dwMajorVersion = ver.major;
- verInfo.dwMinorVersion = ver.minor;
-
- //Syntax: http://msdn.microsoft.com/en-us/library/windows/desktop/ms725491%28v=vs.85%29.aspx
- DWORDLONG conditionMask = 0;
- VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, VER_EQUAL);
- VER_SET_CONDITION(conditionMask, VER_MINORVERSION, VER_EQUAL);
-
- const bool rv = ::VerifyVersionInfo(&verInfo, VER_MAJORVERSION | VER_MINORVERSION, conditionMask)
- == TRUE; //silence VC "performance warnings"
- assert(rv || ::GetLastError() == ERROR_OLD_WIN_VERSION);
-
- return rv;
-}
-
-
-inline
-bool runningWOW64() //test if process is running under WOW64: http://msdn.microsoft.com/en-us/library/ms684139(VS.85).aspx
-{
- typedef BOOL (WINAPI* IsWow64ProcessFun)(HANDLE hProcess, PBOOL Wow64Process);
-
- const SysDllFun<IsWow64ProcessFun> isWow64Process(L"kernel32.dll", "IsWow64Process");
- if (isWow64Process)
- {
- BOOL isWow64 = FALSE;
- if (isWow64Process(::GetCurrentProcess(), &isWow64))
- return isWow64 != FALSE;
- }
- return false;
-}
-
-
-template <bool is64BitBuild> inline
-bool running64BitWindowsImpl() { return true; }
-
-template <> inline
-bool running64BitWindowsImpl<false>() { return runningWOW64(); }
-
-inline
-bool running64BitWindows() //http://blogs.msdn.com/b/oldnewthing/archive/2005/02/01/364563.aspx
-{
- static_assert(zen::is32BitBuild || zen::is64BitBuild, "");
- return running64BitWindowsImpl<is64BitBuild>();
-}
-}
-
-#endif //WINDOWS_VERSION_HEADER_238470348254325
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